stripe.com

DESIGN.md

Narrative design system document — paste directly into Claude Code, Cursor, or Bolt.

---
version: alpha
name: stripe.com
description: "Light product system built on #ffffff with #533afd as the primary CTA accent. Type anchored in sohne-var at 40px / weight 300. Extracted automatically from https://stripe.com/ — every value from getComputedStyle(), no approximation."
narrative: |
  stripe.com is built on a pure-white canvas (rgb(255, 255, 255)).
  The system uses #533afd as the high-saturation accent for primary actions.
  Crisp CTAs (4px radius) reinforce a precise, technical aesthetic alongside sohne-var as the primary typeface.

colors:
  background: "#ffffff"
  surface-1: "rgba(255, 255, 255, 0.65)"
  surface-2: "#e5edf5"
  ink-muted: "#26251e"
  ink-subtle: "#031323"
  primary: "#533afd"
  on-primary: "#ffffff"
  primary-hover: "#2e2b8c"
  hairline: "#8f98a9"
  primary-focus: "#533afd"
  semantic-error: "#d8351e"
  semantic-success: "#00b261"

typography:
  display-xl:
    fontFamily: "sohne-var"
    fontSize: 56px
    fontWeight: 300
    lineHeight: 1.03
    letterSpacing: -1.4px
  display-lg:
    fontFamily: "sohne-var"
    fontSize: 40px
    fontWeight: 300
    lineHeight: 1.15
    letterSpacing: -0.8px
  display-md:
    fontFamily: "sohne-var"
    fontSize: 26px
    fontWeight: 300
    lineHeight: 1.12
    letterSpacing: -0.26px
  headline:
    fontFamily: "sohne-var"
    fontSize: 16px
    fontWeight: 400
    lineHeight: 1.4
    letterSpacing: 0
  caption-sm:
    fontFamily: "sohne-var"
    fontSize: 10px
    fontWeight: 300
    lineHeight: 1.5
    letterSpacing: 0.1px
  button:
    fontFamily: "sohne-var"
    fontSize: 14px
    fontWeight: 400
    lineHeight: 1
    letterSpacing: 0

rounded:
  none: 0px
  xs: 4px
  sm: 8px
  md: 16px
  lg: 16px
  xl: 16px
  xxl: 24px
  pill: 9999px

spacing:
  xxs: 2px
  xs: 4px
  sm: 8px
  md: 12px
  lg: 28px
  xl: 32px
  xxl: 64px
  section: 80px

components:
  button-ghost:
    backgroundColor: "transparent"
    textColor: "#061b31"
    typography: "{typography.button}"
    rounded: "{rounded.xs}"
    padding: 12px 0px
  button-outline:
    backgroundColor: "transparent"
    textColor: "{colors.primary-focus}"
    typography: "{typography.button}"
    rounded: "{rounded.xs}"
    padding: 11.5px 20px 12.5px
  button-primary-brand:
    backgroundColor: "{colors.primary-focus}"
    textColor: "{colors.on-primary}"
    typography: "{typography.button}"
    rounded: "{rounded.xs}"
    padding: 15.5px 20px 16.5px
  card-standard-card:
    backgroundColor: "transparent"
    typography: "{typography.headline}"
    rounded: "{rounded.none}"
  navigation-main-nav:
    backgroundColor: "transparent"
    typography: "{typography.headline}"
    rounded: "{rounded.none}"
  pricing-card-default-tier:
    backgroundColor: "transparent"
    textColor: "#000000"
    typography: "{typography.headline}"
    rounded: "{rounded.none}"
    padding: 0px 0px 4px
  pricing-card-default-tier:
    backgroundColor: "transparent"
    textColor: "#000000"
    typography: "{typography.headline}"
    rounded: "{rounded.none}"
  cta-banner-full-width-cta:
    backgroundColor: "transparent"
    textColor: "{colors.primary-focus}"
    typography: "{typography.button}"
    rounded: "{rounded.xs}"
    padding: 11.5px 20px 12.5px
  testimonial-quote-card:
    backgroundColor: "transparent"
    textColor: "{colors.primary-focus}"
    typography: "{typography.headline}"
    rounded: "{rounded.xs}"
  testimonial-quote-card:
    backgroundColor: "transparent"
    textColor: "{colors.primary-focus}"
    typography: "{typography.headline}"
    rounded: "{rounded.none}"
  status-badge-neutral-dark:
    backgroundColor: "transparent"
    textColor: "#000000"
    typography: "{typography.headline}"
    rounded: "{rounded.none}"
  status-badge-neutral-light:
    backgroundColor: "{colors.on-primary}"
    textColor: "#000000"
    typography: "{typography.caption-sm}"
    rounded: "{rounded.xs}"
    padding: 0px 6px
  product-card-product-tile:
    backgroundColor: "transparent"
    textColor: "#000000"
    typography: "{typography.headline}"
    rounded: "{rounded.none}"

extracted_at: "2026-05-30T20:39:58.882Z"
completeness: 82
scoreVersion: "v2"

---

# Design System — stripe.com
> Extracted automatically by Clone Architect from https://stripe.com
> Date: 2026-05-30
> Viewport: Desktop 1440x900 + Mobile 390x844
> Every value in this file comes from real getComputedStyle() — no approximation.

> **🤖 TL;DR for AI agents** (read this first — saves you scanning the full doc):
>
> - **Canvas**: `rgb(255, 255, 255)` is the page background. Every component composits against this.
> - **Accent**: `#533afd` for primary CTAs ONLY. Never decorative.
> - **Body type**: 16px (token: `typography.body`). Default for ALL text not in a heading role.
> - **Section rhythm**: 48px between major bands. Card padding: 28px.
> - **Default radius**: 8px on buttons/inputs. Pills (`9999px`) only for icon-buttons or status chips.
>
> **Before generating UI**: import this DESIGN.md, scan §2 (Color Palette) + §4 (Components) + §10 (Agent Guide). Skip §11–12 unless extending.

## 1. Visual Theme & Atmosphere

stripe.com adopts the classic pure-white canvas (`#ffffff`) — a deliberate choice that recedes into transparency, letting typography, color and product imagery carry the entire visual weight. 

Typography is anchored in **sohne-var**, deployed with OpenType features enabled globally (`"ss01"`). These aren't decorative — they're load-bearing: without them, the typeface reverts to its generic state and the design loses its specific texture. Headlines run at a remarkably light weight (300) — restraint over assertion, creating an editorial calm that invites reading rather than demanding it. Negative letter-spacing at display sizes (-0.8px at 40px) compresses headlines into engineered blocks, dense and precise. 

Body text reads in Pure Black (`#000000`) (contrast ratio 100.0:1, well above WCAG AA). **Deep Purple** (`#533afd`) provides interactive distinction without visual aggression. Elevation is built from multi-layer shadow stacks — each level combines several blurred layers at varying offsets to simulate the way light actually falls on stacked surfaces, not the simulated drop-shadow of cheap interfaces. 
Motion design uses smooth easing curves for polished state transitions. 

**Key Characteristics:**
- Background: Pure White (`#ffffff`)
- Primary typeface: sohne-var
- Accent: Deep Purple (`#533afd`)
- Display: 40px weight 300, letter-spacing -0.8px
- Shadow system: 10 distinct elevation levels
- Custom fonts loaded: sohne-var, SourceCodePro

## 2. Color Palette & Roles

### Background & Surface
- **Action** (`#ffffff`): Page background (primary)
- **Action** (`#e5edf5`): Surface / elevated background
- **Surface** (`#f8fafd`): Surface / elevated background
- **Ghost White** (`#f5f5ff`): Surface / elevated background
- **Soft Pink** (`#ffe0d1`): Surface / elevated background

### Text & Content
- **Pure Black** (`#000000`): Primary body text
- **Deep Navy** (`#031323`): Secondary text
- **Text** (`#061b31`): Secondary text
- **Translucent #000eff (50%)** (`rgba(0, 14, 255, 0.5)`): Secondary text
- **#2d2564** (`#2d2564`): Secondary text

### Accent & Interactive
- **Accent Gradient Color Stop 1** (`#bdb4ff`): Accent / interactive (CSS var)
- **Accent Gradient Color Stop 2** (`#643afd`): Accent / interactive (CSS var)
- **Accent Gradient Color Stop 3** (`#533afd`): Accent / interactive (CSS var)
- **Text** (`#64748d`): Interactive / accent
- **#81b81a** (`#81b81a`): Interactive / accent
- **Action** (`#b9b9f9`): Interactive / accent
- **Ring Blue** (`#4285f4`): Interactive / accent

### Border & Divider
- **#d6d5d2** (`#d6d5d2`): Borders / dividers
- **Action** (`#d4dee9`): Borders / dividers
- **Silver** (`#d4d4d4`): Borders / dividers
- **Accent** (`#e2e4ff`): Borders / dividers
- **Light Gray** (`#e3ecf7`): Borders / dividers

### Full Extracted Palette
194 distinct colors detected on the live page (22 categorized above + 172 additional below). Every value is a real `getComputedStyle()` color — no approximation.

- `#34a853` — Success Green
- `#fbbc04` — Amber
- `#ea4335` — Vermillion
- `#ff3f52` — Warm Rose
- `#171d27` — Near Black
- `#ff6201` — Bright Orange
- `#ffd700` — Gold
- `#ffaf00` — Amber
- `#ff8205` — #ff8205
- `#fa500f` — Bright Orange
- `#e10500` — Red
- `#76b900` — #76b900
- `#8f98a9` — Cool Gray
- `#1a171b` — Near Black
- `#fa5022` — Bright Orange
- `#0052ff` — #0052ff
- `#aacccc` — Light Blue
- `#fbbc05` — Amber
- `#95bf47` — #95bf47
- `#5e8e3e` — #5e8e3e
- `#181818` — Near Black
- `#0e0e0e` — Jet Black
- `#010202` — Pure Black
- `#72716d` — Stone
- `#55544f` — Slate
- `#43413c` — Dark Gray
- `#26251e` — Warm Brown
- `#1a2c44` — Navy Blue
- `#273951` — Dark Gray
- `#50617a` — Text
- `#ff6118` — Bright Orange
- `#667691` — Slate Gray
- *…+140 more in `raw-css.json` (`desktop.allColors`).*

### CSS Custom Properties (Design Tokens)

**Primary Brand Color**
- `--hds-color-accent-border-solid`: `#533afd`
- `--hds-color-accentColorMode-ruby-icon-solid`: `#ea2261`
- `--hds-color-accentColorMode-magenta-surface-subduedAlt`: `#ffe6f5`
- `--hds-color-accentColorMode-magenta-icon-gradientMiddle`: `#f96bee`

**Shadow Token**
- `--hds-shadow-sm-top-offset-y`: `5px`
- `--hds-shadow-sm-bottom-offset-y`: `2px`
- `--hds-shadow-xs-top-blur`: `10px`
- `--hds-color-shadow-sm-top`: `#00377014`

**Spacing Token**
- `--navigation-padding-outer`: `8px`
- `--hds-space-core-1900`: `152px`
- `--hds-space-core-300`: `24px`
- `--hds-space-core-250`: `20px`

**Font Family Token**
- `--hds-font-family`: `"sohne-var","SF Pro Display",sans-serif`
- `--hds-font-family-code`: `"SourceCodePro","SFMono-Regular",monospace`

**Motion Token**
- `--navigation-duration-slow`: `300ms`
- `--navigation-duration`: `240ms`
- `--navigation-easing`: `cubic-bezier(0.45,0.05,0.55,0.95)`

**Background**
- `--hds-color-surface-border-quiet`: `#e5edf5`
- `--hds-color-surface-bg-subduedAdaptive`: `#1658bc08`
- `--hds-color-surface-bg-subdued`: `#f8fafd`
- `--hds-color-surface-bg-quiet`: `#fff`

**Text Color**
- `--hds-color-text-quiet`: `#7d8ba4`
- `--hds-color-text-soft`: `#50617a`
- `--hds-color-text-solid`: `#061b31`
- `--hds-color-text-subdued`: `#64748d`

**Font Weight Token**
- `--hds-font-weight-bold`: `400`
- `--hds-font-weight-normal`: `300`

**Border**
- `--hds-canary-color-border-focus`: `#635bff`

**Border Radius Token**
- `--navigation-border-radius`: `6px`

**Other tokens**
- `--hds-color-core-neutral-975`: `#0d253d`
- `--hds-font-input-text-md-lineHeight`: `1.3`
- `--hds-color-util-brand-900`: `#1c1e54`
- `--hds-color-action-bg-subduedHover`: `#b9b9f9`
- `--hds-color-input-text-label`: `#273951`
- `--hds-color-input-text-selected`: `#273951`
- `--hds-color-input-text-popover`: `#273951`
- `--hds-color-button-ui-iconHover`: `#2e2b8c`

## 3. Typography Rules

### Font Families
- **Primary**: `sohne-var`
- **Secondary**: `SourceCodePro`

### Custom Fonts Loaded
- **sohne-var** weight 1 1000 (normal)
- **SourceCodePro** weight 500 (normal)

### Typography Hierarchy

| Role | Font | Size | Weight | Line Height | Letter Spacing | Notes |
|------|------|------|--------|-------------|----------------|-------|
| Display Hero | sohne-var | 56px | 300 | 1.03 | -1.4px | Main headline (h2) |
| Section Heading | sohne-var | 40px | 300 | 1.15 | -0.8px | Section titles (h1) |
| Sub-heading | sohne-var | 26px | 300 | 1.12 | -0.26px | Third-level heading (h3) |
| Label Heading | sohne-var | 16px | 400 | 1.4 | normal | Small heading (H4) |
| Button | sohne-var | 14px | 400 | 1 | normal | Button label (14px) |
| Tiny / Micro | sohne-var | 10px | 300 | 1.5 | 0.1px | small text (10px) |
| Tiny / Micro | sohne-var | 10px | 400 | 1.15 | 0.1px | small text (10px) |

### Font Weight Scale

CSS custom properties define 2 explicit weight steps:
- `--hds-font-weight-normal`: `300` — Light
- `--hds-font-weight-bold`: `400` — Regular

### Full Font Size Scale

Sizes detected in the design (descending): `56px`, `48px`, `40px`, `34px`, `32px`, `26px`, `22px`, `20px`, `18px`, `16px`, `15px`, `14px`, `13px`, `12px`, `11px`, `10.50px`, `10px`, `9px`, `8px`

> 13 size(s) detected outside the sampled hierarchy (48px, 34px, 32px, 22px, 20px, 18px, 15px, 13px, 12px, 11px, 10.5px, 9px, 8px). These appear on elements not in the sampled set — likely additional display sizes, marketing-section overrides, or third-party-widget styles.

### OpenType & Variable Font Features

The typography uses these OpenType features intentionally — this is a sophisticated type system, not a default fallback:

- **tabular figures** (`tnum`) — numbers align vertically, essential for pricing tables and dashboards
- **stylistic sets** (`ss0X`) — alternate letterforms enabled (often for brand-specific glyph variants)

**Clone instruction:** Enable these in your CSS:
```css
body {
  font-feature-settings: "ss01", "tnum";
}
```

## 4. Component Stylings

### Buttons

**Ghost**
- Background: `transparent`
- Text: `#061b31`
- Padding: 12px 0px
- Radius: 4px
- Font: 14px weight 400
- Use: Subtle action, toolbar, nav button
- Focus: outline: `rgb(83, 58, 253) solid 2px`

**Outline**
- Background: `transparent`
- Text: `#533afd` `{colors.primary-focus}`
- Padding: 11.5px 20px 12.5px
- Radius: 4px
- Border: 1px solid rgb(255, 255, 255)
- Font: 14px weight 400
- Use: Secondary action with border
- Focus: outline: `rgb(83, 58, 253) solid 2px`

**Primary Brand**
- Background: `#533afd` `{colors.primary-focus}`
- Text: `#ffffff` `{colors.on-primary}`
- Padding: 15.5px 20px 16.5px
- Radius: 4px
- Font: 14px weight 400
- Use: Primary CTA / brand action
- Focus: outline: `rgb(83, 58, 253) solid 2px`

**Primary Brand**
- Background: `#533afd` `{colors.primary-focus}`
- Text: `#ffffff` `{colors.on-primary}`
- Padding: 15.5px 24px 16.5px
- Radius: 4px
- Font: 16px weight 400
- Use: Primary CTA / brand action
- Focus: outline: `rgb(83, 58, 253) solid 2px`

**Subtle**
- Background: `rgba(255, 255, 255, 0.65)` `{colors.on-primary}`
- Text: `#533afd` `{colors.primary-focus}`
- Padding: 14.5px 24px 15.5px
- Radius: 4px
- Border: 1px solid rgb(185, 185, 249)
- Font: 16px weight 400
- Use: Quiet action against page bg
- Focus: outline: `rgb(83, 58, 253) solid 2px`

**Ghost**
- Background: `transparent`
- Text: `#000000`
- Padding: 0px
- Radius: 0px
- Font: 16px weight 400
- Use: Subtle action, toolbar, nav button
- Focus: outline: `rgb(83, 58, 253) solid 2px`

**Light / Invert**
- Background: `#ffffff` `{colors.on-primary}`
- Text: `#533afd` `{colors.primary-focus}`
- Padding: 15.5px 24px 16.5px
- Radius: 4px
- Font: 16px weight 400
- Use: Bright CTA on dark sections
- Focus: outline: `rgb(83, 58, 253) solid 2px`

### Cards & Containers

**Standard Card**
- Background: `transparent`
- Padding: 0px
- Radius: 0px
- Use: Content containers, listing items

### Navigation

**Main Nav**
- Background: `transparent`
- Padding: 0px
- Radius: none
- Font: 16px weight 400
- Use: Fixed/sticky flex nav — N/A items
- Hover: color: `#2e2b8c`, border: `0px none rgb(46, 43, 140)`, borderColor: `#2e2b8c`

### Pricing Cards

**Default Tier**
- Background: `transparent`
- Text: `#000000`
- Padding: 0px 0px 4px
- Radius: 0px
- Font: 16px weight 400
- Use: Subscription tier card

**Default Tier**
- Background: `transparent`
- Text: `#000000`
- Padding: 0px
- Radius: 0px
- Font: 16px weight 400
- Use: Subscription tier card

### CTA Banners

**Full-width CTA**
- Background: `transparent`
- Text: `#533afd` `{colors.primary-focus}`
- Padding: 11.5px 20px 12.5px
- Radius: 4px
- Font: 14px weight 400
- Use: Full-width conversion strip with headline + button
- Focus: outline: `rgb(83, 58, 253) solid 2px`

### Testimonials

**Quote Card**
- Background: `transparent`
- Text: `#533afd` `{colors.primary-focus}`
- Padding: 0px
- Radius: 4px
- Border: 1px solid rgb(214, 217, 252)
- Font: 16px weight 400
- Use: Customer quote with avatar + company attribution

**Quote Card**
- Background: `transparent`
- Text: `#533afd` `{colors.primary-focus}`
- Padding: 0px
- Radius: 0px
- Font: 16px weight 400
- Use: Customer quote with avatar + company attribution

### Status Badges

**Neutral Dark**
- Background: `transparent`
- Text: `#000000`
- Padding: 0px
- Radius: 0px
- Font: 16px weight 400
- Use: Status indicator, label, pill

**Neutral Light**
- Background: `#ffffff` `{colors.on-primary}`
- Text: `#000000`
- Padding: 0px 6px
- Radius: 4px
- Font: 11px weight 400
- Use: Status indicator, label, pill

### Product Cards

**Product Tile**
- Background: `transparent`
- Text: `#000000`
- Padding: 0px
- Radius: 0px
- Font: 16px weight 400
- Use: Product listing grid card


## 4b. Component Behaviors (State Matrix)

### Interaction State Narrative

- **Link**:
  - **hover:** text #533afd → #2e2b8c, border changes
- **NavLink**:
  - **hover:** text #533afd → #2e2b8c, border changes

*State transitions extracted via Playwright simulation — exact values in the YAML matrix below.*

```yaml
component-behaviors:
  button:
    default:
      bg: "rgba(0, 0, 0, 0)"
      fg: "rgb(6, 27, 49)"
    focus:
      bg: "rgba(0, 0, 0, 0)"
      fg: "rgb(6, 27, 49)"
  link:
    default:
      bg: "rgba(0, 0, 0, 0)"
      fg: "rgb(83, 58, 253)"
    hover:
      bg: "rgba(0, 0, 0, 0)"
      fg: "rgb(46, 43, 140)"
  card:
    default:
      bg: "rgba(0, 0, 0, 0)"
      fg: "rgb(0, 0, 0)"
  navLink:
    default:
      bg: "rgba(0, 0, 0, 0)"
      fg: "rgb(83, 58, 253)"
    hover:
      bg: "rgba(0, 0, 0, 0)"
      fg: "rgb(46, 43, 140)"
  footerLink:
    default:
      bg: "rgba(0, 0, 0, 0)"
      fg: "rgb(80, 97, 122)"
```

**Agent usage**: Validate generated components against this matrix. If your output's `:hover` state changes properties not listed here, you are off-brand.


## 4c. Component Vocabulary (Closed System)

*This brand uses ONLY the following component vocabulary. Introducing new variants without justification breaks the system's tonal coherence.*

### Buttons
- **7 shape(s)** in this system: `Ghost`, `Outline`, `Primary Brand`, `Primary Brand`, `Subtle`
- **DO NOT introduce new buttons variants** without justification

### Cards & Containers
- **1 shape(s)** in this system: `Standard Card`
- **DO NOT introduce new cards & containers variants** without justification

### Navigation
- **1 shape(s)** in this system: `Main Nav`
- **DO NOT introduce new navigation variants** without justification

### Pricing Cards
- **2 shape(s)** in this system: `Default Tier`, `Default Tier`
- **DO NOT introduce new pricing cards variants** without justification

### CTA Banners
- **1 shape(s)** in this system: `Full-width CTA`
- **DO NOT introduce new cta banners variants** without justification

### Testimonials
- **2 shape(s)** in this system: `Quote Card`, `Quote Card`
- **DO NOT introduce new testimonials variants** without justification

### Status Badges
- **2 shape(s)** in this system: `Neutral Dark`, `Neutral Light`
- **DO NOT introduce new status badges variants** without justification

### Product Cards
- **1 shape(s)** in this system: `Product Tile`
- **DO NOT introduce new product cards variants** without justification

## 5. Layout Principles

### Layout Type
**hero + sections**

### Grid
Single column, centered content

### Max Width
1266px

### Spacing System
Compact spacing — information density prioritized

| Token | Value |
|-------|-------|
| xxs | 2px |
| xs | 4px |
| sm | 8px |
| md | 12px |
| base | 16px |
| lg | 28px |
| xl | 32px |
| 2xl | 48px |
| 3xl | 64px |

### Border Radius Scale
| Name | Value | Use |
|------|-------|-----|
| None | 0px | No rounding |
| Xs | 4px | Tiny corners (badges, micro elements) |
| Sm | 8px | Buttons, inputs, small elements |
| Md | 16px | Cards, containers |
| Lg | 16px | Large rounded elements, pill segments |
| Xl | 16px | Category strips, featured containers |
| Full | 9999px | Pills, avatars, circular elements |

### Shape Language

| Component | Border Radius |
|-----------|---------------|
| Buttons | `4px` |
| Cards & Containers | `0px` |
| Navigation | `none` |
| Pricing Cards | `0px` |
| CTA Banners | `4px` |
| Testimonials | `4px` |
| Status Badges | `0px` |
| Product Cards | `0px` |
| Page Body | `0px` |

**Shape Personality**: Subtly Rounded — Minimal corner rounding (1–4px). Professional restraint.

**Full Radius Spectrum**: 0px, 1px, 2px, 3px, 4px, 4.51px, 5px, 6px (from `allBorderRadii` scan)


## 5b. Spacing Rhythm Names

*Named spacing tokens with explicit use cases. Use these names in YOUR code instead of raw pixels for consistency.*

| Name | Value | Use case |
|------|-------|----------|
| **hero** | `64px` | Top/bottom of full-bleed hero sections |
| **section** | `32px` | Between major bands (color change, content shift) |
| **subsection** | `28px` | Within a section, between content groups |
| **card** | `12px` | Card padding, list-item spacing |
| **compact** | `8px` | Form fields, tight clusters, badge padding |
| **micro** | `4px` | Icon-text gap, tag inner padding |

**Agent rule**: NEVER hardcode raw pixel values for spacing in generated UI. Always reference these named tokens (`spacing-rhythm.section`, etc.).

## 5c. Widget & Structure Library

Structural patterns extracted from the page DOM — these are the **blueprints** an agent should follow to reproduce the page architecture (not just CSS values).

**8/8 structural patterns detected.**

### Hero Pattern

- **Composition:** centered — Centered composition — heading + subheading + CTAs stacked vertically, content centered horizontally. Common for SaaS marketing pages.
- **Viewport coverage:** 184px tall (not full-viewport)
- **Heading:** "Une infrastructure financière qui booste votre croissance. Acceptez des paiements, proposez des serv" — 40px left-aligned
- **CTAs:** none detected in hero (unusual — agent should verify)
- **Clone instruction:** Reproduce the **centered** layout. Use the heading font-size token at the documented size. No imagery needed for hero — text-driven.

### Navigation Pattern

- **Position:** static (scrolls with page)
- **Layout:** logo-left-links-left — Logo and links both on the left (CTAs typically right)
- **Height:** 64px
- **Logo:** ✓ present
- **Nav links:** 1 primary items
- **CTAs in nav:** 2
- **Clone instruction:** Build a static logo left links left navigation. Reserve 2 slots for primary CTAs.

### Card Grid Pattern

- **Card count:** 5 cards detected
- **Columns (desktop):** 1-up grid
- **Card dimensions:** 1232×1383px (aspect 0.89:1)
- **Gap:** 160px between cards
- **Content:** ✓ image + CTA
- **Image position:** top
- **Clone instruction:** Build a 1-column grid (desktop) with cards at ~0.89:1 aspect ratio. Each card has an image at the top.

### Pricing Table Pattern

- **Tier count:** 2 pricing tiers
- **Layout:** side-by-side (horizontal comparison)
- **Columns (desktop):** 2-up
- **Feature list:** ✓ (median ~80 feature points per tier)
- **Clone instruction:** Build a 2-column side-by-side pricing comparison.

### Testimonial Pattern

- **Count:** 18 testimonial blocks
- **Layout:** grid
- **Avg quote length:** 195 chars (medium quote)
- **Includes:** ✗ no avatars | ✗ no logos | ✗ no ratings
- **Clone instruction:** Build a grid of 18 testimonials.   

### FAQ Pattern

- **Item count:** 10 questions
- **Format:** accordion (expand/collapse)
- **Layout:** two-column
- **Avg question length:** 121 chars
- **Clone instruction:** Build 10 expandable accordion items in a two-column layout.

### CTA Banner Pattern

- **Banner count:** 5
- **Position:** multiple
- **Visual treatment:** ✓ contrasting background
- **Primary CTA text:** "Regarder la vidéo"
- **Clone instruction:** Place multiple CTA banners across page sections. Use contrasting solid background.

### Footer Pattern

- **Columns:** 4
- **Links:** 80 total
- **Height:** 1035px
- **Includes:** ✗ no newsletter | ✗ no social |  ✓ copyright
- **Clone instruction:** Build a 4-column footer with ~20 links per column, and a copyright line.

## 6. Depth & Elevation

| Level | Treatment | Use |
|-------|-----------|-----|
| Flat (Level 0) | No shadow | Page background, content blocks |
| Layered (Level 1) | <br>`rgba(0, 0, 0, 0.1) 0px 30px 60px -50px`,<br>`rgba(50, 50, 93, 0.25) 0px 30px 60px -10px` | Cards, elevated surfaces |
| Layered (Level 2) | <br>`rgba(23, 23, 23, 0.08) 0px 15px 35px 0px` | Cards, elevated surfaces |
| Layered (Level 3) | <br>`rgba(23, 23, 23, 0.06) 0px 3px 6px 0px` | Cards, elevated surfaces |
| Layered (Level 4) | <br>`rgba(50, 50, 93, 0.12) 0px 16px 32px 0px` | Cards, elevated surfaces |

**Shadow Philosophy**: Multi-layered shadow system creating natural, atmospheric depth. Each shadow level combines multiple layers for realistic elevation.

## 7. Motion & Interaction

### Easing System

| CSS Variable | Curve | Semantic Name |
|--------------|-------|---------------|
| `--navigation-easing` | `cubic-bezier(0.45,0.05,0.55,0.95)` | Custom Ease — Balanced |

### Duration Scale

| CSS Variable | Value | Tier |
|--------------|-------|------|
| `--navigation-duration-slow` | `300ms` | Normal |
| `--navigation-duration` | `240ms` | Normal |
| `--navigation-hamburger-duration` | `0.25s` | Normal |

### Copy-Paste Transition Snippets

**Opacity**
```css
transition: opacity 0.24s cubic-bezier(0.45, 0.05, 0.55, 0.95);
```

**All Props**
```css
transition: fill 0.24s cubic-bezier(0.45, 0.05, 0.55, 0.95);
```

**Color / Background**
```css
transition: color 0.24s cubic-bezier(0.45, 0.05, 0.55, 0.95), background-color 0.24s cubic-bezier(0.45, 0.05, 0.55, 0.95), border...;
```

**Transform**
```css
transition: transform 0.25s cubic-bezier(0.6, 0, 0.2, 0.5);
```

### Motion Fingerprint

- **Speed Character**: Deliberate & Calm (median duration: `300ms`)
- **Dominant Easing**: custom cubic-bezier curves

> This design moves with deliberate & calm timing using custom cubic-bezier curves, creating a UI that feels calm and controlled.

## 8. Do's and Don'ts

### Do
- Use sohne-var as the primary typeface — it defines the brand personality
- Keep font weights between 400-400 — the system uses a narrow weight range for subtle hierarchy
- Use negative letter-spacing (-0.8px) at display sizes for compressed, editorial headlines
- Use the extracted shadow patterns for elevation — they are tuned to match the brand palette
- Use Accent (`#533afd`) as the primary accent — it's the brand's signature interactive color
- Use small 4px radius for buttons — this design system uses subtle rounding, not pill shapes
- Maintain nav height at 64px — consistent vertical space for the navigation bar
- Respect the 4px–32px spacing range — the design uses a wide scale for visual breathing room
- Keep the hero centered and text-driven — no decorative media, typography carries the message
- Each card includes a top image — imagery is part of the card identity, not optional
- Place 2 pricing tiers side-by-side on desktop — direct comparison is the value prop
- Lay out testimonials in a grid (18+ items) — quantity signals scale and trust
- Use expandable accordion for the FAQ — saves vertical space and lets users self-navigate
- Repeat the primary CTA across 5 banner sections — conversion paths are layered, not single
- Build a content-dense footer (4 columns, ~80 links) — this site treats the footer as a sitemap, not an afterthought

### Don't
- Don't substitute with generic sans-serif or serif — the custom font carries the brand
- Don't use weight 700 (bold) or above — 400 is the maximum weight in this system
- Don't increase letter-spacing on headings — the type is designed to run tight at scale
- Don't invent new shadow values — use only the extracted shadow levels
- Don't introduce additional saturated accent colors — the palette is intentionally controlled
- Don't over-round buttons with pill or large radius — the system uses restrained, sharp-ish corners
- Don't collapse or hide the nav on scroll without an explicit scroll-triggered animation — the design uses fixed nav presence
- Don't add hero illustrations or photos — they'll break the typographic restraint
- Don't make the nav sticky — this design lets it scroll away to maximize content focus


## 7b. Enforceable Brand Rules

*Structured Do/Don't with reasoning and validation tests. Agents can programmatically verify generated UI.*

```yaml
rules:
  - id: brand-canvas-001
    type: do
    rule: "Always use the page background `rgb(255, 255, 255)` as the base canvas"
    why: "Every component is designed to composit against this exact tone"
    test: "document.body.style.backgroundColor === 'rgb(255, 255, 255)'"
  - id: brand-accent-001
    type: do
    rule: "Reserve `#533afd` for primary CTAs and brand-mark signals only"
    why: "Single chromatic assertion device — overuse dilutes meaning"
    test: "querySelectorAll('[style*=\"#533afd\"]').length <= 3 per fold"
```

## 9. Responsive Behavior

### Breakpoints
| Name | Width | Key Changes |
|------|-------|-------------|
| Mobile | 640px | Single column layout |
| Tablet | 768px | 2-column grids |
| Desktop | 1024px | Full layout |
| Large Desktop | 1280px | Maximum width |

### Token Diff — Desktop vs Mobile

| Element | Property | Desktop | Mobile |
|---------|----------|---------|--------|
| heading | font-size | `40px` | `34px` |
| heading | line-height | `46px` | `35.02px` |
| heading | letter-spacing | `-0.8px` | `-0.34px` |
| nav | padding | `10px 16px` | `12px 12px 14px 16px` |
| nav | height | `64px` | `66px` |
| hero | padding | `0px 16px` | `0px` |
| hero | height | `685px` | `519.047px` |
| button | padding | `12px 0px` | `16px 0px` |
| button | font-size | `14px` | `18px` |
| button | width | `79px` | `fit-content` |
| card | width | `816px` | `358px` |

### Collapsing Strategy
- Headlines: 40px → 34px on mobile
- Navigation: horizontal links → hamburger menu on mobile
- Cards: multi-column → stacked vertical on mobile
- Footer: multi-column → stacked single column on mobile

### Touch Targets
- Buttons: 12px 0px padding
- Navigation: adequate spacing between items
- Interactive elements: minimum 44px touch target recommended

### Collapsing Narrative

How the structural patterns adapt from desktop to mobile (extracted from both viewport extractions):

- **Navigation collapses to hamburger** — 1 links visible on desktop, 0 on mobile (the rest hide behind a menu toggle).
- **Nav CTAs reduced** on mobile (2 → 0) — the design prioritizes content over conversion buttons at small sizes.
- **Footer columns collapse:** 4 columns (desktop) → 1 column (mobile).

## 9b. Visual Tone & Photography

**Tone:** Mixed photography + illustration

A balanced mix of photographic content and vector graphics. Photos likely carry product/lifestyle context while SVG handles icons, logos, and decorative accents.

**Canonical Brand Image (OG):**
- https://images.stripeassets.com/fzn2n1nzq965/XtX984S1GJVsVOXFC7kMu/01988281e867728dfb09aa7793a6e3b9/Stripe.jpg?q=80
  *This is the image shown when the site is shared on social media — represents the brand visual essence.*

**Hero Image (above-fold dominant visual):**
- Aspect: 1.43:1 (landscape)
- Rendered size: 1392×975px
- *Use this aspect ratio + composition for your clone's hero — mimicking the proportion preserves the visual hierarchy.*

**Aspect Ratio Distribution:**
- Landscape (1.15–2.3): 2 (7%)
- Portrait (<0.87): 10 (37%)
- Square (0.87–1.15): 6 (22%)
- Ultra-wide (>2.3): 9 (33%)

**Media Format Mix:**
- JPG: 6 (typically photographic content)
- PNG: 21 (logos, transparent UI elements, mockups)
- SVG: 3 (icons, illustrations, decorative geometry)

**Average rendered image size:** 626×435px
**Above-fold image count:** 1 / 27

**Decorative Patterns Detected:**
- 1 multi-stop linear gradient (mesh-like, 3+ color stops) — the brand leans on rich color transitions for visual depth
- 10 radial gradients — circular color blooms used for spotlight/glow effects
- 3 large decorative SVG shapes (≥200×200px, non-icon) — likely blob/illustration accents
- **Glassmorphism** detected (`backdrop-filter: blur`) — layered transparent surfaces with blur, modern OS-like aesthetic

**Clone instruction for decorative work:** This is a gradient-rich design — invest in multi-stop CSS gradients (3+ color stops), not solid backgrounds.

**Imagery Guidance for clones:**
- Mix photography and illustration intentionally: photos for product/context, vectors for icons + decorative accents.
- Respect the format split — replacing JPGs with illustrations (or vice versa) will shift the brand tone.

## 10. Agent Prompt Guide

### Quick Reference
- Background: Pure White (`#ffffff`)
- Primary text: Pure Black (`#000000`)
- Accent: Deep Purple (`#533afd`)
- Border: Cool Gray (`#8f98a9`)
- Font: sohne-var
- Body: 16px weight 400

### Example Component Prompts
- "Create a hero section on Pure White background (#ffffff). Headline at 40px sohne-var weight 300, line-height 1.15, letter-spacing -0.8px, color #000000."
- "Create the primary CTA button: `#533afd` background, `#ffffff` text, 4px border-radius, 15.5px 20px 16.5px padding, 400 weight, sohne-var font."
- "Design a card on `transparent` background. Border: none. Radius: 0px. Shadow: none. Padding: 0px."
- "Build navigation: relative on `#ffffff`. sohne-var 16px weight 400 for links."

### Iteration Guide
1. **Canvas**: Set the light canvas to Pure White (`#ffffff`) — every component is composited against this exact base.
2. **Typography**: All type in sohne-var, weight range 300–400. Never exceed 400 — heavier weights break the brand's tonal restraint.
3. **Accent**: Deep Purple (`#533afd`) is the sole interactive color. On hover → Brand Indigo (`#665efd`). Use CSS transitions, not opacity/brightness filters.
4. **Motion**: All transitions use `cubic-bezier(0.45,0.05,0.55,0.95)`. Timing: 240ms for micro-interactions, 250ms for layout changes. Never use linear for UI transitions — preserve the brand's easing personality.
5. **Shape**: CTAs at `4px`, cards at `0px`. Apply border-radius from the extracted scale only — don't invent intermediate values.
6. **Spacing**: Use the `--ca-space-*` token scale (4px–32px). All padding, margin, and gap values are multiples from this scale — no magic numbers.
7. **Tokens**: Import from §11 CSS Export (`--ca-*` vars). Never hardcode hex values — always reference a token so theming remains consistent.

## 11. CSS Design Tokens Raw Export

*Copy-paste ready `:root {}` block — all values extracted directly from the live site.*

```css
/* Colors */
:root {
  --ca-on-primary: #ffffff;
  --ca-surface-2: #e5edf5;
  --ca-ink-muted: #26251e;
  --ca-ink-subtle: #031323;
  --ca-primary-focus: #533afd;
  --ca-primary-hover: #2e2b8c;
  --ca-hairline: #8f98a9;
  --ca-semantic-error: #d8351e;
  --ca-semantic-success: #00b261;
}

/* Typography */
:root {
  --ca-font-primary: "sohne-var", system-ui, sans-serif;
  --ca-text-display: 56px;
  --ca-text-heading: 40px;
  --ca-text-button: 14px;
}

/* Spacing & Radius */
:root {
  --ca-space-xxs: 2px;
  --ca-space-xs: 4px;
  --ca-space-sm: 8px;
  --ca-space-md: 12px;
  --ca-space-base: 16px;
  --ca-space-lg: 28px;
  --ca-space-xl: 32px;
  --ca-space-2xl: 48px;
  --ca-space-3xl: 64px;
  --ca-radius-none: 0px;
  --ca-radius-xs: 4px;
  --ca-radius-sm: 8px;
  --ca-radius-md: 16px;
  --ca-radius-lg: 16px;
  --ca-radius-xl: 16px;
  --ca-radius-full: 9999px;
}
```


## 13. Page Structure Skeleton

*The actual layout the source site uses. Reproduce these sections in order to match the site structure.*

```yaml
page-skeleton:
  - section: hero
    tag: div
    height: 975px
    width: 1392px
    layout: block
    children: 1
  - section: unknown
    tag: div
    height: 15049px
    width: full-bleed
    layout: block
    children: 2
  - section: hero
    tag: div
    classes: ["section-background"]
    height: 761px
    width: full-bleed
    layout: block
    children: 3
  - section: hero
    tag: div
    classes: ["hero-wave-animation"]
    height: 761px
    width: full-bleed
    layout: flex-row justify=center
    children: 1
  - section: hero
    tag: div
    height: 761px
    width: 1266px
    layout: block
    children: 1
  - section: hero
    tag: div
    height: 761px
    width: 1393px
    layout: block
    children: 1
  - section: main-content
    tag: main
    height: 13938px
    width: full-bleed
    layout: block
    children: 9
  - section: hero
    tag: section
    classes: ["hds-color-mode", "hero-section-container", "section", "section--white"]
    height: 685px
    width: full-bleed
    layout: block
    children: 3
    bg: "rgb(255, 255, 255)"
    padding: "0px 16px"
  - section: hero
    tag: div
    classes: ["section-container"]
    height: 612px
    width: 1266px
    layout: grid: 1-col gap=normal
    children: 1
    padding: "36px 16px"
  - section: hero
    tag: div
    classes: ["hero-section__layout-grid"]
    height: 333px
    width: 1232px
    layout: grid: 12-col gap=40px 16px
    children: 4
  - section: section-9
    tag: section
    classes: ["hds-color-mode", "section", "section--white", "hds-mode--light"]
    height: 2231px
    width: full-bleed
    layout: block
    children: 2
    bg: "rgb(255, 255, 255)"
    padding: "0px 16px"
  - section: unknown
    tag: div
    classes: ["section-container", "section-row", "modular-solutions-section", "section-row-gap"]
    height: 2231px
    width: 1266px
    layout: flex-column justify=normal
    children: 2
    padding: "96px 16px"
  - section: unknown
    tag: div
    classes: ["section-title", "section-title--span-8"]
    height: 141px
    width: 856px
    layout: block
    children: 3
    padding: "0px 40px 0px 0px"
  - section: unknown
    tag: div
    height: 648px
    width: 407px
    layout: flex-row justify=center
    children: 2
  - section: unknown
    tag: div
    height: 628px
    width: 407px
    layout: flex-row justify=center
    children: 1
  - section: unknown
    tag: div
    classes: ["connect-platform-dom-graphic-wrapper"]
    height: 457px
    width: 1083px
    layout: flex-row justify=flex-end
    children: 1
    padding: "0px 40px 0px 0px"
  - section: section-10
    tag: section
    classes: ["hds-color-mode", "section", "section--white", "hds-mode--light"]
    height: 560px
    width: full-bleed
    layout: block
    children: 1
    bg: "rgb(255, 255, 255)"
    padding: "0px 16px"
  - section: unknown
    tag: div
    classes: ["section-container", "sessions-section"]
    height: 560px
    width: 1266px
    layout: block
    children: 1
    padding: "80px 16px"
  - section: unknown
    tag: div
    height: 400px
    width: 1232px
    layout: grid: 1-col gap=normal
    children: 3
  - section: section-11
    tag: section
    classes: ["hds-color-mode", "stats-section", "stats-section--time-daytime", "section"]
    height: 963px
    width: full-bleed
    layout: block
    children: 4
    bg: "rgb(255, 255, 255)"
    padding: "0px 16px"
  - section: unknown
    tag: div
    classes: ["section-container"]
    height: 963px
    width: 1266px
    layout: block
    children: 3
    padding: "80px 16px 0px"
  - section: unknown
    tag: div
    classes: ["section-background"]
    height: 963px
    width: full-bleed
    layout: block
    children: 1
  - section: unknown
    tag: div
    classes: ["section-row", "section-row-gap"]
    height: 364px
    width: 1234px
    layout: flex-column justify=normal
    children: 3
  - section: unknown
    tag: div
    classes: ["stats-section__stats-menu"]
    height: 169px
    width: 1264px
    layout: grid: 12-col gap=16px
    children: 4
  - section: unknown
    tag: div
    classes: ["stats-menu__stat-wrapper"]
    height: 167px
    width: 304px
    layout: flex-column justify=normal
    children: 2
    padding: "40px 0px"
```

**Agent rule**: rebuild sections in this order (sorted by vertical position). Match the layout primitive (grid N-col / flex direction / block).


## 14. Copy Library (Real Content from Source)

*Actual text content extracted from the live page. Use these strings verbatim when reproducing the site — they carry the brand voice.*

```yaml
copy:
  section-headings:
    - "Des solutions flexibles pour chaque business model."
    - "Le pilier du commerce mondial"
    - "Une infrastructure fiable et évolutive, compatible avec tous vos outils existants."
    - "Nouveautés"
  sub-headings:
    - "Acceptez et optimisez les paiements en ligne ou en personne dans le monde entier"
    - "Boostez vos revenus grâce au commerce agentique"
    - "Faites circuler vos fonds au-delà des frontières grâce aux stablecoins et à la crypto"
    - "Hertz unifie ses activités commerciales avec Stripe"
    - "Intégrez Stripe à vos systèmes existants."
    - "Les entreprises utilisant Stripe ont généré 1,9 Bn $US en 2025."
  ctas:
    - "Produits"
    - "Tarifs"
    - "Se connecter
Se connecter"
    - "Contacter notre équipe"
    - "Démarrer maintenant"
    - "S'inscrire avec Google"
    - "Regarder la vidéo"
    - "Plus de 135"
  navigation:
    - "Tarifs"
    - "Se connecter"
    - "Démarrer maintenant"
    - "Contacter notre équipe"
    - "Se connecter
Se connecter"
    - "Stripe pour les grandes entreprises"
    - "Stripe pour les startups"
    - "Stripe pour les plateformes"
  footer-links:
    - "Tarifs"
    - "Automatisation des opérations financières"
```

**Agent rule**: reuse these exact strings when generating UI. Do NOT translate or rephrase — brand voice is preserved through the original wording.


## 15. Asset Inventory (Image Roles & Ratios)

*Image inventory classified by role and aspect ratio. When reproducing the site, allocate this number of assets per role.*

```yaml
assets:
  hero:
    count: 8
    avg-ratio: 2.47
    common-aspect: "~16:9 landscape"
  editorial:
    count: 3
    avg-ratio: 0.61
    common-aspect: "~9:16 portrait"
  thumbnail:
    count: 7
    avg-ratio: 0.96
    common-aspect: "~1:1 square"
```

**Agent rule**: when generating placeholder images, match these counts and aspect ratios. Use neutral placeholder backgrounds for `product` (e.g. `#f5f5f5`), full-color photography hints for `hero` and `editorial`.


## 16. Component HTML Templates

*Suggested HTML markup for reproducing the key components — based on what was detected in the source DOM.*

### Button (primary action)
```html
<button class="btn btn-primary">
  Produits
</button>
```
_Source pattern detected: padding `12px 0px` · radius `4px` · weight `400`_

### Product Card (e-commerce)
```html
<article class="product-card">
  <div class="card-badge-promo">SALE</div>      <!-- optional top-left badge -->
  <div class="card-image-wrap">
    <img src="..." alt="..." class="product-photo" />
  </div>
  <div class="card-meta">
    <p class="brand-name">{brand}</p>
    <h3 class="product-name">{name}</h3>
    <div class="rating">★★★★★ <span class="count">{n}</span></div>
    <p class="price">{price-range OR single}</p>
  </div>
</article>
```

### Generic Card
```html
<div class="card">
  <!-- content -->
</div>
```
_Source pattern detected: padding `0px` · radius `0px` · shadow `none`_

**Agent rule**: use these markup skeletons as the structural baseline. Apply tokens from §2-3 for visual styling.


---
## Extraction Completeness: 82/100 (B)

| Category | Score | Max | Detail |
|----------|-------|-----|--------|
| Colors & Palette | 25 | 25 | 22 named colors |
| Typography | 18 | 20 | 7 roles defined |
| Components | 20 | 20 | 8 specs extracted |
| Motion & Interaction | 5 | 15 | No keyframes, easing vars |
| CSS Custom Properties | 10 | 10 | 688 vars |
| Responsive Breakpoints | 4 | 5 | 4 breakpoints |
| Variable Fonts | 0 | 5 | None detected |

## 12. Known Gaps & Confidence

Explicit list of what this extraction could NOT capture. Agents should not invent values for these — either skip the feature or use the documented baseline + heuristic fallback.

| Category | What's missing | Fallback strategy |
|----------|----------------|-------------------|
| **Keyframe animations** | No @keyframes declarations found (transitions only) | Use CSS transitions for state changes; avoid complex scroll-based animations |
| **Form inputs** | No text input fields detected on this page | Use the documented border-radius + accent border on focus; 12-16px padding inside |

### Per-section confidence

| Section | Confidence | Reason |
|---------|------------|--------|
| §1 Visual Theme | High | Body bg extracted via getComputedStyle() |
| §2 Colors | High | 688 CSS vars (semantic naming requires ≥20 for high) |
| §3 Typography | High | 7 typography roles inferred |
| §4 Components | High | 8 component variants captured |
| §7 Motion | Medium | Transitions only |
| §8 Do's/Don'ts | High | 24 rules generated; design-decisions.json has evidence per rule |
| §9 Responsive | High | 4 breakpoints detected |
| §9b Photography | High | 27 images, hero present |

---
*Generated by Clone Architect — automated Playwright extraction + design analysis.*
*Source: https://stripe.com | 2026-05-30T20:39:59.115Z*
*All values verified via getComputedStyle() — no approximation, no hallucination.*