Vercel

# layout.md — Vercel Design System

---

## 0. Quick Reference

> Inject this block into CLAUDE.md or .cursorrules for immediate agent context.

**Stack:** React/Next.js · CSS Modules + Tailwind · Token source: reconstructed-from-computed (5 CSS vars extracted; remainder synthesised from computed styles — moderate confidence)
**How to apply:** Use as `var(--token-name)` in CSS, `style={{ prop: 'var(--token-name)' }}` in JSX, or `bg-[var(--token-name)]` in Tailwind.

```css
:root {
  /* Colours */
  --vercel-bg-app: #ffffff;
  --vercel-bg-surface: rgb(235, 245, 255);
  --vercel-color-text-primary: rgb(23, 23, 23);
  --vercel-color-text-secondary: rgb(77, 77, 77);
  --vercel-color-border: rgb(235, 235, 235);

  /* Typography */
  --vercel-font-sans: 'Geist', Arial, 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol', sans-serif;
  --vercel-font-mono: 'Geist Mono', monospace;
  --vercel-font-size-xs: 12px;
  --vercel-font-size-sm: 14px;
  --vercel-font-size-md: 16px;
  --vercel-font-weight-regular: 400;
  --vercel-font-weight-medium: 500;
  --vercel-font-weight-semibold: 600;
  --vercel-line-height-loose: 20px;

  /* Spacing */
  --vercel-space-xs: 8px;
  --vercel-space-sm: 12px;
  --vercel-space-md: 16px;
  --vercel-space-lg: 24px;
  --vercel-space-xl: 32px;
  --vercel-space-2xl: 40px;
  --vercel-space-3xl: 64px;

  /* Radius */
  --vercel-radius-sm: 6px;
  --vercel-radius-lg: 64px;
  --vercel-radius-full: 100px;

  /* Shadows */
  --vercel-shadow-sm: rgb(235, 235, 235) 0px 0px 0px 1px;
  --vercel-shadow-md: rgba(0,0,0,0.08) 0px 0px 0px 1px, rgba(0,0,0,0.02) 0px 1px 1px 0px, rgba(0,0,0,0.04) 0px 4px 8px 0px;

  /* Motion */
  --vercel-duration-fast: 0.09s;
  --vercel-duration-base: 0.15s;
  --vercel-duration-slow: 0.3s;
  --vercel-ease-default: ease;
}
```

```tsx
// Primary CTA Button — pill shape, dark fill
export const PrimaryButton = ({ children, disabled }: { children: React.ReactNode; disabled?: boolean }) => (
  <button
    disabled={disabled}
    style={{
      fontFamily: 'var(--vercel-font-sans)',
      fontSize: 'var(--vercel-font-size-sm)',
      fontWeight: 'var(--vercel-font-weight-regular)',
      borderRadius: 'var(--vercel-radius-full)',
      padding: '8px var(--vercel-space-sm)',
      backgroundColor: 'rgb(23, 23, 23)',
      color: '#ffffff',
      border: 'none',
      cursor: disabled ? 'not-allowed' : 'pointer',
      opacity: disabled ? 0.5 : 1,
      transition: 'color var(--vercel-duration-fast) var(--vercel-ease-default), background var(--vercel-duration-fast) var(--vercel-ease-default)',
    }}
  >
    {children}
  </button>
);
```

<!-- Quick Reference truncated to fit the 75-line cap. See later sections for the full design system. -->
## 1. Design Direction & Philosophy

### Character & Mood
Vercel's design system is **precision-minimal**: high contrast, ultra-clean, and technically self-assured. The aesthetic signals speed, reliability, and developer trust. Every element earns its place — whitespace is intentional, not incidental.

### Palette Stance
The core palette is **near-monochrome** — almost-black text (`rgb(23, 23, 23)`) on white backgrounds, with grey mid-tones for secondary content. Colour is introduced sparingly: blue (`--ds-blue-*` design system vars referenced in interactive states) for focus rings, links, and brand moments. The brand surface tint (`rgb(235, 245, 255)`) appears only in specific brand sections, not as a general background treatment.

### Typography Stance
**Geist** is Vercel's proprietary typeface — it is the *only* body and display font. Geist Mono is used for code contexts. Decorative pixel-grid variants (GeistPixelSquare, GeistPixelGrid, GeistPixelCircle, etc.) exist for specific marketing hero moments only, not UI. Letter-spacing is **negative** on display sizes, signalling tight, confident display type.

### What This Design Explicitly Rejects
- **Warm colours**: no amber, orange, or warm-grey neutrals in the UI shell
- **Rounded UI panels**: cards have `0px` border-radius; only interactive controls (buttons, tabs, pills) have radius
- **Heavy shadows**: depth is conveyed through single-pixel borders, not drop shadows
- **Decorative flourishes**: no gradients on text, no ornamental dividers, no icon backgrounds
- **Large body text**: base body is `12px` — unusually small, prioritising density over readability comfort
- **Border-radius 8px on CTAs**: primary action buttons are pill-shaped (`100px`) or large-radius (`64px` for tab filters), never `8px`

---

## 2. Colour System

### Tier 1: Primitive Values
```css
/* Primitive colour values — do not use directly in components */
:root {
  --primitive-white: #ffffff;          /* Pure white */
  --primitive-near-black: rgb(23, 23, 23);    /* #171717 — darkest text/backgrounds */
  --primitive-gray-mid: rgb(77, 77, 77);      /* #4d4d4d — secondary text */
  --primitive-gray-border: rgb(235, 235, 235);/* #ebebeb — borders, dividers */
  --primitive-gray-surface: rgb(250, 250, 250); /* #fafafa — inset surfaces, code bg */
  --primitive-blue-surface: rgb(235, 245, 255); /* Brand surface tint */
  --primitive-transparent: rgba(0, 0, 0, 0);
}
```

### Tier 2: Semantic Aliases
```css
/* Semantic tokens — USE THESE in components */
:root {
  /* Surfaces */
  --vercel-bg-app: #ffffff;                     /* Page background, card fill; extracted: low confidence */
  --vercel-bg-surface: rgb(235, 245, 255);      /* Brand-tinted section background (hero, feature callouts); extracted: medium confidence */
  --vercel-bg-inset: rgb(250, 250, 250);        /* Code blocks, inset panels; reconstructed: moderate confidence */
  --vercel-bg-overlay: rgba(0, 0, 0, 0.04);    /* Hover overlays on light surfaces; reconstructed: moderate confidence */

  /* Text */
  --vercel-color-text-primary: rgb(23, 23, 23);    /* Headings, body, labels; extracted: high confidence */
  --vercel-color-text-secondary: rgb(77, 77, 77);  /* Subheadings, captions, meta; extracted: high confidence */
  --vercel-color-text-inverse: #ffffff;             /* Text on dark/filled backgrounds; reconstructed: high confidence */
  --vercel-color-text-disabled: rgba(23, 23, 23, 0.4); /* Disabled state text; reconstructed: moderate confidence */

  /* Borders */
  --vercel-color-border: rgb(235, 235, 235);    /* Cards, inputs, dividers; extracted: high confidence */
  --vercel-color-border-strong: rgb(23, 23, 23); /* Focus outlines, strong borders; reconstructed: high confidence */

  /* Interactive / Brand */
  --vercel-color-action-bg: rgb(23, 23, 23);    /* Primary button fill; reconstructed: high confidence from computed */
  --vercel-color-action-fg: #ffffff;            /* Primary button text; reconstructed: high confidence */
  --vercel-color-action-hover: rgb(50, 50, 50); /* Primary button hover (slightly lighter dark); reconstructed: moderate confidence */

  /* Aliases from extracted CSS vars (preserve original names) */
  --caveats-toggle-false: #fff;                 /* Toggle off-state background; extracted: low confidence */
  --caveats-toggle-true: var(--ds-blue-700);   /* Toggle on-state background (Vercel DS blue); extracted: low confidence */
}
```

### Tier 3: Component Tokens
```css
/* Component-scoped tokens — where component styles differ from semantic defaults */
:root {
  --btn-primary-bg: var(--vercel-color-action-bg);        /* #171717 */
  --btn-primary-fg: var(--vercel-color-action-fg);        /* #fff */
  --btn-primary-radius: var(--vercel-radius-full);        /* 100px */
  --btn-secondary-bg: var(--vercel-bg-app);               /* #fff */
  --btn-secondary-border: var(--vercel-color-border);     /* rgb(235,235,235) */

  --card-bg: var(--vercel-bg-app);                        /* #fff */
  --card-border: var(--vercel-color-border);              /* rgb(235,235,235) */
  --card-shadow: rgba(0, 0, 0, 0.04) 0px 2px 2px 0px;   /* Subtle lift */
  --card-radius: 0px;                                     /* Cards are square-cornered */

  --input-border-hover: var(--ds-gray-alpha-500);         /* Vercel DS token */
  --input-border-focus: var(--ds-gray-alpha-600);         /* Vercel DS token */
  --input-shadow-focus: 0 0 0 1px var(--ds-gray-alpha-600), 0px 0px 0px 4px #00000029;
  --input-shadow-error: 0 0 0 1px var(--ds-red-900), 0 0 0 4px var(--ds-red-300);
}
```

### Colour Mode Notes
The site includes a `.dark-theme` class (referenced in interactive state CSS). Dark mode input focus shadow shifts from `#00000029` to `#ffffff3d`. Full dark mode token set is `[TBD - extract manually]` — only the light-mode surface has been reconstructed here.

---

## 3. Typography System

All type uses **Geist** as the primary sans-serif. **NEVER** substitute Inter, Roboto, or system-ui as the primary family.

### Font Stack
```css
:root {
  --vercel-font-sans: 'Geist', Arial, 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', 'Noto Sans', sans-serif;
  --vercel-font-mono: 'Geist Mono', monospace;
  /* Decorative pixel variants — marketing hero sections only, never UI */
  --vercel-font-pixel-square: 'GeistPixelSquare', monospace;
  --vercel-font-pixel-grid: 'GeistPixelGrid', monospace;
}
```

### Composite Type Scale
```css
/* ALWAYS use these composite groups. NEVER set font-size, font-weight, line-height in isolation. */
:root {
  /* Display / Hero — h1 */
  --vercel-type-display: {
    font-family: var(--vercel-font-sans);
    font-size: 48px;
    font-weight: 600;
    line-height: 48px;        /* Tight: 1:1 ratio */
    letter-spacing: -2.4px;   /* Strong negative tracking */
    color: var(--vercel-color-text-primary);
  }; /* extracted: high confidence */

  /* Section Heading — h3 */
  --vercel-type-heading: {
    font-family: var(--vercel-font-sans);
    font-size: 32px;
    font-weight: 600;
    line-height: 40px;
    letter-spacing: -1.28px;
    color: var(--vercel-color-text-primary);
  }; /* extracted: high confidence */

  /* Label / Subheading — h2 used as section label */
  --vercel-type-label: {
    font-family: var(--vercel-font-sans);
    font-size: 14px;
    font-weight: 500;
    line-height: 20px;
    letter-spacing: -0.28px;
    color: var(--vercel-color-text-secondary);
  }; /* extracted: high confidence */

  /* Body — default paragraph/prose */
  --vercel-type-body: {
    font-family: var(--vercel-font-sans);
    font-size: 12px;
    font-weight: 400;
    line-height: 16px;
    letter-spacing: normal;
    color: var(--vercel-color-text-secondary);
  }; /* extracted: high confidence — NOTE: 12px body is intentional density choice */

  /* UI Text — buttons, nav items, labels */
  --vercel-type-ui: {
    font-family: var(--vercel-font-sans);
    font-size: 14px;
    font-weight: 400;
    line-height: 14px;       /* 1:1 ratio — tight for buttons */
    letter-spacing: normal;
    color: var(--vercel-color-text-primary);
  }; /* extracted: high confidence */

  /* Link / Navigation */
  --vercel-type-link: {
    font-family: var(--vercel-font-sans);
    font-size: 16px;
    font-weight: 400;
    line-height: normal;
    letter-spacing: normal;
    color: var(--vercel-color-text-primary);
    text-decoration: none;
  }; /* extracted: high confidence */

  /* Code */
  --vercel-type-code: {
    font-family: var(--vercel-font-mono);
    font-size: 13px;
    font-weight: 500;
    line-height: 20px;
    letter-spacing: normal;
    color: var(--vercel-color-text-primary);
  }; /* extracted: high confidence */
}
```

### Type Scale Table

| Role | Size | Weight | Line-height | Letter-spacing | Colour |
|------|------|--------|-------------|----------------|--------|
| Display (h1) | **48px** | 600 | 48px | **-2.4px** | `rgb(23,23,23)` |
| Heading (h3) | **32px** | 600 | 40px | -1.28px | `rgb(23,23,23)` |
| Label (h2) | 14px | 500 | 20px | -0.28px | `rgb(77,77,77)` |
| UI / Button | 14px | 400 | 14px | normal | `rgb(23,23,23)` |
| Body | 12px | 400 | 16px | normal | `rgb(77,77,77)` |
| Code | 13px | 500 | 20px | normal | `rgb(23,23,23)` |
| Link / Nav | 16px | 400 | normal | normal | `rgb(23,23,23)` |

### Weight Scale
```css
:root {
  --vercel-font-weight-regular: 400;   /* Body, UI, links — extracted: high confidence */
  --vercel-font-weight-medium: 500;    /* Labels, code, section headers — extracted: high confidence */
  --vercel-font-weight-semibold: 600;  /* Display headings, section titles — reconstructed: high confidence */
}
```

**Geist is a variable font (weight 100–900)** — all intermediate weights are available but only 400/500/600 are used in the UI system.

---

## 4. Spacing & Layout

### Base Unit & Scale
The spacing system uses an **8px base unit** with a 4px micro-unit for internal component gaps.

```css
:root {
  /* Spacing scale — extracted: high confidence */
  --vercel-space-xs:  8px;   /* Icon gaps, tight internal padding */
  --vercel-space-sm:  12px;  /* Button padding (horizontal), form element internal */
  --vercel-space-md:  16px;  /* Standard section padding, card padding */
  --vercel-space-lg:  24px;  /* Between grouped elements */
  --vercel-space-xl:  32px;  /* Section internal spacing */
  --vercel-space-2xl: 40px;  /* Between major sections */
  --vercel-space-3xl: 64px;  /* Banner height, hero padding, large section gaps */

  /* Micro — not in curated set, inferred from computed gaps */
  --vercel-space-2xs: 4px;   /* Icon-to-label gap in buttons (4px extracted from button_primary computed style); reconstructed: high confidence */

  /* Layout */
  --vercel-banner-height: 0px;         /* Extracted: dynamic — set to 0 when no banner */
  --vercel-banner-min-height: 64px;    /* Extracted: minimum banner height */
  --vercel-vh100-offset: calc(var(--header-height) + var(--banner-height)); /* Extracted: viewport height offset */
}
```

### Grid System & Breakpoints
Vercel's breakpoint system is highly granular — 50+ breakpoints extracted. The canonical semantic breakpoints are:

```css
/* Primary breakpoints — anchor layout changes here */
@custom-media --bp-sm  (min-width: 640px);   /* Small devices */
@custom-media --bp-md  (min-width: 768px);   /* Tablets */
@custom-media --bp-lg  (min-width: 1024px);  /* Desktops */
@custom-media --bp-xl  (min-width: 1200px);  /* Wide desktops */
@custom-media --bp-2xl (min-width: 1400px);  /* Ultra-wide */

/* Notable product-specific breakpoints (extracted) */
/* 960px: major layout shift (3-col → single-col) */
/* 1248px: max content width boundary */
/* 375px: iPhone SE / base mobile */
```

### Container & Layout Rules
```css
/* Container */
.vercel-container {
  max-width: 1248px;      /* Inferred from 1248px breakpoint — reconstructed: moderate confidence */
  margin-inline: auto;
  padding-inline: var(--vercel-space-md); /* 16px on mobile */
}

@media (min-width: 768px) {
  .vercel-container {
    padding-inline: var(--vercel-space-lg); /* 24px on tablet+ */
  }
}

/* Navigation — flex row, full width */
[role="navigation"] {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: normal;
  padding: 0px; /* extracted */
}

/* Card grid — flex column per card, grid at layout level */
.vercel-card {
  display: flex;
  flex-direction: column;
}

/* Button internal layout */
.vercel-button {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: var(--vercel-space-2xs); /* 4px — extracted from button_primary */
  padding: var(--vercel-space-xs) var(--vercel-space-sm); /* 8px 12px */
}
```

**Decision rule:** Use `flex` for nav bars, buttons, and single-axis component layouts. Use `grid` for card grids and multi-column section layouts. Cards themselves are flex-column internally.

---

## 5. Page Structure & Layout Patterns

> Source: LAYOUT DIGEST. No screenshots available. Rows marked **(inferred)** are derived from component inventory and digest signals, not visually confirmed.

### 5.1 Section Map

| # | Section | Layout Type | Approx Height | Key Elements | Source |
|---|---------|-------------|---------------|--------------|--------|
| 1 | Global Navigation / Header | Flex row, full-width, sticky | 64px (banner-min-height) | Logo, nav links (16px/400), CTA buttons (pill), mobile toggle (50% radius) | digest |
| 2 | Hero | Full-width, centered text | ~480–640px | h1 (48px/600/-2.4px), subheading, primary CTA (100px radius, dark fill), secondary CTA (pill, outlined) | inferred |
| 3 | Feature / Product Category Tabs | Flex row, pill-tab filter bar | ~56px | Tab buttons (64px radius, `role="tab"`) — "AI Apps", "Web Apps", "Ecommerce" | digest |
| 4 | Feature Card Grid | Grid (2–3 col), contained | ~400–600px | Cards (0px radius, 1px border `rgb(235,235,235)`, `rgba(0,0,0,0.04) 0px 2px 2px 0px` shadow) | digest |
| 5 | Section Label + Content Block | Block, left-aligned | ~200–400px | h2 label (14px/500, secondary colour), h3 heading (32px/600), body (12px/400) | digest |
| 6 | CTA Banner / Inline CTA | Full-width, centered | ~120–200px | Inline CTA wrapper (hover: `--ds-background-200`), primary pill button | inferred |
| 7 | Footer | Grid/flex, multi-column | ~300–400px | Nav links (14px/400), logo, legal text (12px) | inferred |

### 5.2 Layout Patterns

**Navigation:**
```
display: flex | flex-direction: row | align-items: center | padding: 0
→ [Logo] [Nav Links: gap normal] [spacer flex-1] [Ask AI btn] [Log In btn] [Sign Up btn (pill)]
```
Nav links are `16px / weight 400 / color rgb(23,23,23)`. CTA group at far right uses pill buttons (`100px` radius). Mobile toggle uses `50%` radius (circular icon button).

**Feature Tab Bar:**
```
display: flex | flex-direction: row | gap: 10px | align-items: center
→ Tab items: border-radius 64px | padding: 0px 16px | font-size 14px | justify: center
```
Active tab (inferred): filled dark background. Inactive: transparent, `rgb(0,0,0)` text.

**Card Grid:**
```
Cards: display flex | flex-direction: column | border: 1px solid rgb(235,235,235) | border-radius: 0px | box-shadow: rgba(0,0,0,0.04) 0px 2px 2px 0px
```
Cards are square-cornered. Grid is likely `repeat(auto-fit, minmax(300px, 1fr))` with `var(--vercel-space-lg)` (24px) gap — **(inferred: moderate confidence)**.

**Section Label + Heading pattern:**
```
h2 (label): 14px / 500 / rgb(77,77,77) / margin-bottom: 12px / flex row / gap: 8px / align-items: center
h3 (heading): 32px / 600 / rgb(23,23,23) / margin-bottom: 8px
body: 12px / 400 / rgb(77,77,77)
```

### 5.3 Visual Hierarchy

1. **h1 at 48px / -2.4px tracking** dominates the hero — no competitor for vertical attention
2. **Primary CTA buttons** are dark-filled (`rgb(23,23,23)`) pills (`100px` radius) — highest contrast interactive element
3. **Section labels** (h2, 14px, secondary colour) establish rhythm between content blocks without competing with headings
4. **Cards** create horizontal scan lines through 1px borders, not shadow-based depth
5. **Whitespace** between sections is `40–64px` (`--vercel-space-2xl` to `--vercel-space-3xl`) — generous vertical rhythm
6. **CTA colour anchor:** Primary CTAs are dark-fill (`rgb(23,23,23)` bg / `#fff` text), not blue — blue appears only in focus rings and toggle-true state

### 5.4 Content Patterns

**Label → Heading → Body → CTA** (repeating section structure):
```
[section label: 14px/500/secondary]   ← establishes topic
[section heading: 32px/600/primary]   ← main statement
[body copy: 12px/400/secondary]       ← supporting detail
[CTA button: pill/dark]               ← action
```

**Tab → Card grid** (feature showcase):
```
[Tab filter bar: 64px-radius tabs]
[Grid of cards: 0px-radius, bordered, subtle shadow]
  └── [Card: flex-column, h2-label + h3-heading + body]
```

**Inline CTA block** (mid-page conversion):
```
[Full-width wrapper, hover: background-color var(--ds-background-200)]
  └── [Text + pill button, centered]
```

---

## 6. Component Patterns

### 6.1 Button

**Anatomy:** `[optional icon] [label text]`

**Variants from radius census:**
- **Primary CTA** — `border-radius: 100px` (pill), dark fill
- **Tab filter** — `border-radius: 64px`, transparent/filled toggle
- **Secondary/utility** — `border-radius: 6px`, outlined or ghost
- **Icon button** — `border-radius: 50%`, square icon target

**Token mappings:**

| State | background | color | border | shadow | cursor |
|-------|-----------|-------|--------|--------|--------|
| default | `rgb(23,23,23)` | `#ffffff` | none | none | pointer |
| hover | `rgb(50,50,50)` *(inferred)* | `#ffffff` | none | none | pointer |
| focus-visible | `rgb(23,23,23)` | `#ffffff` | none | `0 0 0 2px #fff, 0 0 0 4px rgb(23,23,23)` | pointer |
| active | `rgb(10,10,10)` *(inferred)* | `#ffffff` | none | none | pointer |
| disabled | `rgb(23,23,23)` | `#ffffff` | none | none | `not-allowed`, `opacity: 0.5` |
| loading | `rgb(23,23,23)` | `#ffffff` | none | none | wait |

```tsx
// Production-ready Primary Button with all states
import { ButtonHTMLAttributes, ReactNode } from 'react';

type ButtonVariant = 'primary' | 'secondary' | 'ghost';
type ButtonSize = 'sm' | 'md';

interface ButtonProps extends ButtonHTMLAttributes<HTMLButtonElement> {
  children: ReactNode;
  variant?: ButtonVariant;
  size?: ButtonSize;
  loading?: boolean;
  leftIcon?: ReactNode;
}

export function Button({
  children,
  variant = 'primary',
  size = 'md',
  loading = false,
  leftIcon,
  disabled,
  ...props
}: ButtonProps) {
  const isDisabled = disabled || loading;

  const baseStyles: React.CSSProperties = {
    fontFamily: 'var(--vercel-font-sans)',
    fontSize: 'var(--vercel-font-size-sm)',       /* 14px */
    fontWeight: 'var(--vercel-font-weight-regular)', /* 400 */
    lineHeight: 'var(--vercel-font-size-sm)',     /* 14px — 1:1 ratio */
    letterSpacing: 'normal',
    display: 'flex',
    flexDirection: 'row',
    alignItems: 'center',
    justifyContent: 'center',
    gap: 'var(--vercel-space-2xs)',               /* 4px */
    padding: size === 'sm'
      ? '6px var(--vercel-space-xs)'             /* 6px 8px */
      : 'var(--vercel-space-xs) var(--vercel-space-sm)', /* 8px 12px */
    border: 'none',
    cursor: isDisabled ? 'not-allowed' : 'pointer',
    opacity: isDisabled ? 0.5 : 1,
    transition: [
      `color var(--vercel-duration-fast) var(--vercel-ease-default)`,
      `background var(--vercel-duration-fast) var(--vercel-ease-default)`,
    ].join(', '),
    textDecoration: 'none',
    whiteSpace: 'nowrap',
    /* Variant-specific radius */
    borderRadius: variant === 'primary'
      ? 'var(--vercel-radius-full)'              /* 100px */
      : 'var(--vercel-radius-sm)',               /* 6px */
    /* Variant-specific colour */
    backgroundColor: variant === 'primary'
      ? 'var(--vercel-color-action-bg)'          /* rgb(23,23,23) */
      : variant === 'secondary'
      ? 'var(--vercel-bg-app)'                   /* #ffffff */
      : 'transparent',
    color: variant === 'primary'
      ? 'var(--vercel-color-action-fg)'          /* #ffffff */
      : 'var(--vercel-color-text-primary)',      /* rgb(23,23,23) */
    boxShadow: variant === 'secondary'
      ? 'var(--vercel-shadow-sm)'                /* 1px border-style shadow */
      : 'none',
  };

  return (
    <button
      {...props}
      disabled={isDisabled}
      style={baseStyles}
      onMouseEnter={(e) => {
        if (!isDisabled && variant === 'primary') {
          (e.currentTarget as HTMLButtonElement).style.backgroundColor = 'rgb(50, 50, 50)';
        }
        props.onMouseEnter?.(e);
      }}
      onMouseLeave={(e) => {
        if (!isDisabled && variant === 'primary') {
          (e.currentTarget as HTMLButtonElement).style.backgroundColor = 'var(--vercel-color-action-bg)';
        }
        props.onMouseLeave?.(e);
      }}
    >
      {loading ? <Spinner /> : leftIcon}
      <span>{children}</span>
    </button>
  );
}

function Spinner() {
  return (
    <svg
      width="14"
      height="14"
      viewBox="0 0 14 14"
      style={{ animation: 'spin 0.6s linear infinite' }}
      aria-hidden="true"
    >
      <circle cx="7" cy="7" r="5" stroke="currentColor" strokeWidth="2" fill="none" strokeDasharray="20" strokeDashoffset="10" />
    </svg>
  );
}
```

---

### 6.2 Card

**Anatomy:** `[card wrapper] → [content: flex-column]`

**Key computed values:** `border-radius: 0px` · `border: 1px solid rgb(235,235,235)` · `background: #ffffff` · `box-shadow: rgba(0,0,0,0.04) 0px 2px 2px 0px`

| State | background | border | shadow |
|-------|-----------|--------|--------|
| default | `#ffffff` | `1px solid rgb(235,235,235)` | `rgba(0,0,0,0.04) 0px 2px 2px 0px` |
| hover | `rgb(250,250,250)` *(inferred)* | `1px solid rgb(235,235,235)` | `rgba(0,0,0,0.08) 0px 4px 8px 0px` *(inferred)* |
| focus-visible | `#ffffff` | `1px solid rgb(23,23,23)` | `var(--ds-focus-ring)` |
| disabled | `rgb(250,250,250)` | `1px solid rgb(235,235,235)` | none |

```tsx
interface CardProps {
  children: React.ReactNode;
  onClick?: () => void;
  padding?: string;
}

export function Card({ children, onClick, padding = '24px' }: CardProps) {
  const isInteractive = !!onClick;
  return (
    <div
      role={isInteractive ? 'button' : undefined}
      tabIndex={isInteractive ? 0 : undefined}
      onClick={onClick}
      style={{
        display: 'flex',
        flexDirection: 'column',
        backgroundColor: 'var(--card-bg)',           /* #ffffff */
        border: '1px solid var(--card-border)',      /* rgb(235,235,235) */
        borderRadius: 'var(--card-radius)',           /* 0px */
        boxShadow: 'var(--card-shadow)',              /* rgba(0,0,0,0.04) 0px 2px 2px 0px */
        padding,
        cursor: isInteractive ? 'pointer' : 'default',
        transition: `box-shadow var(--vercel-duration-base) var(--vercel-ease-default), background var(--vercel-duration-base) var(--vercel-ease-default)`,
        outline: 'none',
      }}
      onKeyDown={(e) => {
        if (isInteractive && (e.key === 'Enter' || e.key === ' ')) {
          e.preventDefault();
          onClick?.();
        }
      }}
    >
      {children}
    </div>
  );
}
```

---

### 6.3 Navigation Item

**Anatomy:** `[anchor / button] → [optional icon] + [label]`

**Computed:** `font-size: 16px` · `font-weight: 400` · `color: rgb(23,23,23)` · `display: flex` · `align-items: center`

| State | color | decoration |
|-------|-------|------------|
| default | `rgb(23,23,23)` | none |
| hover | `rgb(23,23,23)` + underline *(inferred from `.hero-module a:hover`)* | underline |
| focus-visible | `rgb(23,23,23)` | `box-shadow: var(--ds-focus-ring)` |
| active | `rgb(23,23,23)` | underline |

```tsx
export function NavItem({ href, children }: { href: string; children: React.ReactNode }) {
  return (
    <a
      href={href}
      style={{
        fontFamily: 'var(--vercel-font-sans)',
        fontSize: 'var(--vercel-font-size-md)',       /* 16px */
        fontWeight: 'var(--vercel-font-weight-regular)',
        color: 'var(--vercel-color-text-primary)',
        display: 'flex',
        alignItems: 'center',
        gap: 'normal',
        textDecoration: 'none',
        transition: `color var(--vercel-duration-base) var(--vercel-ease-default)`,
        outline: 'none',
      }}
      className="nav-item" /* CSS: .nav-item:hover { text-decoration: underline } .nav-item:focus-visible { box-shadow: var(--ds-focus-ring) } */
    >
      {children}
    </a>
  );
}
```

---

### 6.4 Badge / Tag

**Anatomy:** `[pill container] → [text]`

| State | background | color | radius |
|-------|-----------|-------|--------|
| default | `rgb(235,235,235)` *(inferred from border colour)* | `rgb(77,77,77)` | `100px` (pill) |
| hover | `rgba(235,235,235,0.8)` *(inferred)* | `rgb(23,23,23)` | `100px` |

```tsx
export function Badge({ children }: { children: React.ReactNode }) {
  return (
    <span style={{
      fontFamily: 'var(--vercel-font-sans)',
      fontSize: 'var(--vercel-font-size-xs)',          /* 12px */
      fontWeight: 'var(--vercel-font-weight-medium)',  /* 500 */
      lineHeight: 'var(--vercel-line-height-loose)',   /* 20px */
      color: 'var(--vercel-color-text-secondary)',
      backgroundColor: 'var(--vercel-color-border)',
      borderRadius: 'var(--vercel-radius-full)',       /* 100px */
      padding: '2px var(--vercel-space-xs)',           /* 2px 8px */
      display: 'inline-flex',
      alignItems: 'center',
    }}>
      {children}
    </span>
  );
}
```

---

### 6.5 Input Field

**Anatomy:** `[container wrapper] → [optional prefix] [input] [optional suffix]`

**Focus ring:** `0 0 0 1px var(--ds-gray-alpha-600), 0px 0px 0px 4px #00000029` (light) / `0 0 0 1px var(--ds-gray-alpha-600), 0px 0px 0px 4px #ffffff3d` (dark)

| State | box-shadow |
|-------|-----------|
| default | `var(--vercel-shadow-sm)` — `rgb(235,235,235) 0px 0px 0px 1px` |
| hover | `0 0 0 1px var(--ds-gray-alpha-500)` |
| focus | `0 0 0 1px var(--ds-gray-alpha-600), 0px 0px 0px 4px #00000029` |
| error | `0 0 0 1px var(--ds-red-900), 0 0 0 4px var(--ds-red-300)` |
| error+hover | `0 0 0 1px var(--ds-red-900), 0 0 0 4px var(--ds-red-500)` |
| disabled | `var(--vercel-shadow-sm)` + `cursor: not-allowed` |

```tsx
interface InputProps extends React.InputHTMLAttributes<HTMLInputElement> {
  error?: boolean;
  prefix?: React.ReactNode;
}

export function Input({ error, prefix, ...props }: InputProps) {
  return (
    <div
      className={`input-container${error ? ' input-error' : ''}`}
      style={{
        display: 'flex',
        alignItems: 'center',
        borderRadius: 'var(--vercel-radius-sm)',        /* 6px */
        boxShadow: error
          ? 'var(--input-shadow-error)'
          : 'var(--vercel-shadow-sm)',
        backgroundColor: 'var(--vercel-bg-app)',
        transition: `box-shadow var(--vercel-duration-fast) var(--vercel-ease-default)`,
        /* hover/focus handled via CSS classes — see interactive state tokens */
      }}
    >
      {prefix && (
        <span style={{ padding: '0 var(--vercel-space-xs)', color: 'var(--vercel-color-text-secondary)' }}>
          {prefix}
        </span>
      )}
      <input
        {...props}
        aria-invalid={error ? 'true' : undefined}
        style={{
          fontFamily: 'var(--vercel-font-sans)',
          fontSize: 'var(--vercel-font-size-sm)',
          fontWeight: 'var(--vercel-font-weight-regular)',
          color: 'var(--vercel-color-text-primary)',
          background: 'transparent',
          border: 'none',
          outline: 'none',
          padding: 'var(--vercel-space-xs) var(--vercel-space-sm)',
          width: '100%',
        }}
      />
    </div>
  );
}
```

---

### 6.6 Tab / Filter Tab

**Anatomy:** `[tab bar: flex row] → [tab item: role="tab"]`

**Radius:** `64px` (large pill) for filter tabs · `0px` or minimal for panel tabs

| State | background | color |
|-------|-----------|-------|
| default | transparent | `rgb(0,0,0)` |
| hover | `rgba(0,0,0,0.04)` *(inferred)* | `rgb(0,0,0)` |
| active/selected | `rgb(23,23,23)` *(inferred — dark fill)* | `#ffffff` |
| focus-visible | transparent | — + `var(--ds-focus-ring)` |

```tsx
export function FilterTab({
  children,
  active,
  onClick,
}: {
  children: React.ReactNode;
  active?: boolean;
  onClick?: () => void;
}) {
  return (
    <button
      role="tab"
      aria-selected={active}
      onClick={onClick}
      style={{
        fontFamily: 'var(--vercel-font-sans)',
        fontSize: 'var(--vercel-font-size-sm)',         /* 14px */
        fontWeight: 'var(--vercel-font-weight-regular)',
        borderRadius: 'var(--vercel-radius-lg)',        /* 64px */
        padding: '0px var(--vercel-space-md)',          /* 0px 16px */
        display: 'flex',
        flexDirection: 'row',
        justifyContent: 'center',
        alignItems: 'center',
        gap: '10px',
        border: 'none',
        cursor: 'pointer',
        backgroundColor: active ? 'rgb(23, 23, 23)' : 'transparent',
        color: active ? '#ffffff' : 'rgb(0, 0, 0)',
        transition: `color var(--vercel-duration-fast) var(--vercel-ease-default), background var(--vercel-duration-fast) var(--vercel-ease-default)`,
        height: '36px',
      }}
    >
      {children}
    </button>
  );
}
```

---

## 7. Elevation & Depth

Vercel uses **border-as-depth** rather than shadow-as-depth. Elevation is expressed through borders and subtle shadows, not dramatic drop shadows.

```css
:root {
  /* Border tokens */
  --vercel-border-default: 1px solid rgb(235, 235, 235);    /* Cards, inputs, dividers */
  --vercel-border-strong: 1px solid rgb(23, 23, 23);        /* Focus borders, active states */
  --vercel-border-transparent: 1px solid transparent;        /* Placeholder for hover transitions */

  /* Shadow tokens */
  --vercel-shadow-none: none;
  --vercel-shadow-sm: rgb(235, 235, 235) 0px 0px 0px 1px;
    /* Single-pixel border rendered as shadow — cards, chips; extracted: high confidence */
  --vercel-shadow-md: rgba(0, 0, 0, 0.08) 0px 0px 0px 1px,
                      rgba(0, 0, 0, 0.02) 0px 1px 1px 0px,
                      rgba(0, 0, 0, 0.04) 0px 4px 8px 0px,
                      rgb(250, 250, 250) 0px 0px 0px 1px,
                      rgb(255, 255, 255) 0px 0px 0px 1px;
    /* Layered shadow for dropdowns, modals, elevated panels; extracted: high confidence */
  --vercel-shadow-card: rgba(0, 0, 0, 0.04) 0px 2px 2px 0px;
    /* Card lift — very subtle; extracted: high confidence from card computed style */
  --vercel-shadow-dropdown: rgba(0, 0, 0, 0) 0px 0px 0px 0px,
                             rgba(0, 0, 0, 0) 0px 0px 0px 0px,
                             rgba(0, 0, 0, 0.08) 0px 0px 0px 1px,
                             rgba(0, 0, 0, 0.04) 0px 2px 2px 0px,
                             rgba(0, 0, 0, 0.04) 0px 8px 8px -8px,
                             rgb(250, 250, 250) 0px 0px 0px 1px;
    /* Dropdown menus; extracted: high confidence from dropdown computed style */

  /* Focus ring — Vercel DS token (not fully extractable without --ds-* vars) */
  --ds-focus-ring: [TBD - extract manually from --ds-focus-ring CSS custom property];
    /* Referenced in: checkbox, toggle, select, deploy button, explore cards focus states */
  --vercel-focus-ring-fallback: 0 0 0 2px #ffffff, 0 0 0 4px rgb(23, 23, 23);
    /* Reconstructed fallback — moderate confidence */
}

/* Z-index scale — reconstructed from inferred layering */
:root {
  --z-base: 0;
  --z-raised: 1;       /* Cards with hover states */
  --z-dropdown: 100;   /* Navigation dropdowns */
  --z-sticky: 200;     /* Sticky navigation */
  --z-modal: 300;      /* Dialogs, overlays */
  --z-toast: 400;      /* Toast notifications */
  --z-tooltip: 500;    /* Tooltips */
}
```

### Elevation Principles
- **Cards** use `1px solid rgb(235,235,235)` border + `rgba(0,0,0,0.04) 0px 2px 2px 0px` — the lightest possible lift
- **Dropdowns** use the layered `--vercel-shadow-md` system — inner white layers create a "lifted card" visual without heavy blur
- **Modals** animate in with `translateY(20px)` → `translateY(0)` (see `--motion-modal-appear`)
- **NEVER** use `box-shadow: 0 4px 16px rgba(0,0,0,0.2)` or similar heavy shadow — it violates the brand's minimal depth system

---

## 8. Motion

Vercel's motion system is **fast and purposeful**: micro-interactions use `0.09s`, state transitions use `0.15s`, and slow reveals use `0.3s`. The easing is uniformly `ease`. Navigation uses `rotateX` + `scale` for a subtle 3D panel feel.

```css
:root {
  /* Duration tokens — extracted: high confidence */
  --vercel-duration-fast: 0.09s;   /* Button colour/bg transitions, hover micro-states */
  --vercel-duration-base: 0.15s;   /* Body/text colour transitions, input shadows */
  --vercel-duration-slow: 0.3s;    /* Panel reveals, complex animations */
  --vercel-ease-default: ease;     /* All transitions — extracted: high confidence (196 elements) */
}

/* Standard transition mixins */
.transition-fast {
  transition: color var(--vercel-duration-fast) var(--vercel-ease-default),
              background var(--vercel-duration-fast) var(--vercel-ease-default);
}
.transition-base {
  transition: color var(--vercel-duration-base) var(--vercel-ease-default);
}
.transition-all-base {
  transition: all var(--vercel-duration-base) var(--vercel-ease-default);
}
```

### Key Animation Patterns

| Name | Pattern | Duration | Use |
|------|---------|----------|-----|
| `fade-in` | `opacity: 0 → 1` | varies | Content reveals, dialog appear |
| `modal-appear` | `opacity:0 + translateY(20px) → opacity:1 + translateY(0)` | `0.3s` | Modal entry |
| `slide-in` | `opacity:0 + translateY(75%) → opacity:1 + translateY(0)` | varies | Toast entry |
| `nav scaleIn` | `opacity:0 + rotateX(-30deg) scale(0.9) → 1 + rotateX(0) scale(1)` | `0.15s` | Nav dropdown open |
| `nav scaleOut` | reverse of scaleIn, `-10deg scale(0.95)` | `0.15s` | Nav dropdown close |
| `nav slideDown` | `translateY(-8px) → translateY(0)` | `0.15s` | Nav sub-panel |
| `spinner spin` | `opacity: 1 → 0.15` (repeated on segments) | — | Loading spinner |
| `soft-fade-in` | `opacity: 0.3 → 1` | varies | Subtle content load |
| `hero letterReveal` | `rotateX(90deg) translateY(0.4em) → rotateX(0) translate(0,0)` | varies | Hero text entrance |

### Animation Rules
- **Interactive feedback** (button bg/colour): always `var(--vercel-duration-fast)` (`0.09s`) — never slower
- **Page-level transitions** (fades, modal): `var(--vercel-duration-slow)` (`0.3s`)
- **Respect `prefers-reduced-motion`**: all animation keyframes should be wrapped in `@media (prefers-reduced-motion: no-preference)`
- **NEVER** use `transition: all` with durations > `0.15s` on interactive elements — causes sluggish feel

```css
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}
```

---

## 9. Anti-Patterns & Constraints

1. **Hardcoded colour literals**
   **Rule:** Never write `color: #171717` or `background: rgb(235,235,235)` directly in component code.
   **Why it fails:** AI agents default to inlining computed colour values when no token system is provided, creating colour drift when the theme changes. Dark mode becomes impossible to implement, and global palette updates require grep-replace across hundreds of files.
   **What to do instead:** Always use `var(--vercel-color-text-primary)` etc. Define all colours in `:root` first.

2. **Wrong border-radius on buttons**
   **Rule:** NEVER apply `border-radius: 8px` to primary CTA buttons. NEVER apply `border-radius: 100px` to card containers.
   **Why it fails:** AI agents trained on generic design systems default to `8px` "medium" radius for all interactive elements. Vercel's radius system is bifurcated: cards/panels = `0px`, UI controls = `6px`, tab filters = `64px`, primary CTAs = `100px`. Applying 8px destroys the brand's pill-button identity.
   **What to do instead:** Check element type. Cards → `0px`. Utility buttons → `var(--vercel-radius-sm)` (6px). Filter tabs → `var(--vercel-radius-lg)` (64px). Primary CTAs → `var(--vercel-radius-full)` (100px).

3. **Using Inter or system fonts as the primary typeface**
   **Rule:** NEVER set `font-family: Inter` or `font-family: system-ui` as the primary sans-serif.
   **Why it fails:** AI agents commonly default to Inter (Tailwind default) or system-ui when generating UI components. This produces output that looks like a generic SaaS app, losing the Geist brand identity entirely.
   **What to do instead:** Always set `font-family: var(--vercel-font-sans)` which resolves to `'Geist', Arial, ...`.

4. **Arbitrary spacing values**
   **Rule:** NEVER use `padding: 10px`, `margin: 15px`, `gap: 20px`, or any value not on the scale `4px / 8px / 12px / 16px / 24px / 32px / 40px / 64px`.
   **Why it fails:** AI agents invent plausible-looking spacing when not constrained. 10px and 15px break the 8px grid, creating visual inconsistency that compounds across layouts. 20px (off-grid) appears constantly in AI-generated code because it "feels balanced."
   **What to do instead:** Use `var(--vercel-space-*)` tokens exclusively. If a value seems missing, compose: `calc(var(--vercel-space-xs) + var(--vercel-space-2xs))` = 12px.

5. **Missing interaction states**
   **Rule:** NEVER ship a button, input, link, or card without hover, focus-visible, active, and disabled states defined.
   **Why it fails:** AI agents generate the default visual state correctly but silently omit `focus-visible` styling (keyboard accessibility) and `disabled` cursor/opacity rules. This causes WCAG failures and jarring UX for keyboard users.
   **What to do instead:** For every interactive element, explicitly implement all states before considering the component done. Use the state tables in Section 6 as a checklist.

6. **Constructing Tailwind classes dynamically**
   **Rule:** NEVER write `className={`bg-${color}-500`}` or `className={`text-${size}`}`.
   **Why it fails:** Tailwind's PurgeCSS/content scanning cannot statically analyse dynamic string interpolation. The class is never included in the final CSS bundle, producing invisible or unstyled elements at runtime — a failure that only appears in production builds, not development.
   **What to do instead:** Use complete class strings: `className={active ? 'bg-gray-900' : 'bg-transparent'}`. Or use CSS custom properties via `style={{ backgroundColor: 'var(--vercel-color-action-bg)' }}`.

7. **Using `!important` to override tokens**
   **Rule:** NEVER use `!important` on colour, spacing, or typography properties.
   **Why it fails:** `!important` breaks the cascade intentionally. When the token value needs to change for dark mode, component variants, or state overrides, `!important` makes the override impossible without another `!important` — creating an escalating specificity war that makes the stylesheet unmaintainable.
   **What to do instead:** Fix specificity at the source. Use CSS custom property overrides at the component scope: `.my-component { --vercel-color-text-primary: #fff; }`.

8. **Using absolute positioning for layout**
   **Rule:** NEVER use `position: absolute` to position sibling content elements (nav items, card grids, section headings).
   **Why it fails:** AI agents reach for `position: absolute` when layout is complex. This removes elements from normal flow, breaking responsive behaviour and causing overlapping content at non-tested viewport sizes. Vercel's layout uses flex and grid exclusively for component structure.
   **What to do instead:** Use `display: flex` (row for navbars, column for cards) and `display: grid` for multi-column layouts. Reserve `position: absolute` for decorative layers and overlays only.

9. **Heavy box-shadow values**
   **Rule:** NEVER use `box-shadow: 0 4px 16px rgba(0,0,0,0.15)` or similar heavy, blurred shadows on cards or panels.
   **Why it fails:** AI agents default to Material Design-style elevation shadows. Vercel's depth system is expressly minimal — depth is communicated through `1px` borders and `0 2px 2px rgba(0,0,0,0.04)` micro-shadows. Heavy shadows break the "precision-minimal" aesthetic and make components look like they belong to a different design system.
   **What to do instead:** Use `var(--vercel-shadow-card)` for cards, `var(--vercel-shadow-md)` for dropdowns/modals only.

10. **Placeholder or lorem ipsum content in component examples**
    **Rule:** NEVER generate components with `"Lorem ipsum"`, `"Card Title"`, or `"Button Text"` as the displayed content.
    **Why it fails:** Placeholder text causes AI reviewers and engineers to overlook typography rendering errors (wrong font, wrong weight, wrong tracking) because the fake content doesn't reveal the mismatch. Negative letter-spacing of `-2.4px` is invisible until real long headline text is used.
    **What to do instead:** Use representative content: real Vercel-style copy ("Deploy in seconds", "Start your project"), realistic heading lengths, and actual code snippets for `<code>` elements.

---

## Appendix A: Complete Token Reference

Every token extracted from the source. §0 CORE TOKENS is the primary AI signal; this appendix is reference material an AI can cross-check against when a curated role is missing.

```css
/* Colours (32) */
--caveats-toggle-false: #fff;
--brand-surface-1: rgb(235, 245, 255); /* Brand surface, dominant on 1 element — e.g. "li" /* mined from computed styles */ */
--vercel-bg-app: #ffffff;
--vercel-bg-surface: rgb(235, 245, 255);
--vercel-color-text-primary: rgb(23, 23, 23);
--vercel-color-text-secondary: rgb(77, 77, 77);
--vercel-color-border: rgb(235, 235, 235);
--primitive-white: #ffffff;
--primitive-near-black: rgb(23, 23, 23);
--primitive-gray-mid: rgb(77, 77, 77);
--primitive-gray-border: rgb(235, 235, 235);
--primitive-gray-surface: rgb(250, 250, 250);
--primitive-blue-surface: rgb(235, 245, 255);
--primitive-transparent: rgba(0, 0, 0, 0);
--vercel-bg-inset: rgb(250, 250, 250);
--vercel-bg-overlay: rgba(0, 0, 0, 0.04);
--vercel-color-text-inverse: #ffffff;
--vercel-color-text-disabled: rgba(23, 23, 23, 0.4);
--vercel-color-border-strong: rgb(23, 23, 23);
--vercel-color-action-bg: rgb(23, 23, 23);
--vercel-color-action-fg: #ffffff;
--vercel-color-action-hover: rgb(50, 50, 50);
--btn-primary-bg: var(--vercel-color-action-bg);
--btn-secondary-bg: var(--vercel-bg-app);
--btn-secondary-border: var(--vercel-color-border);
--card-bg: var(--vercel-bg-app);
--card-border: var(--vercel-color-border);
--input-border-hover: var(--ds-gray-alpha-500);
--input-border-focus: var(--ds-gray-alpha-600);
--vercel-border-default: 1px solid rgb(235,235,235);
--vercel-border-strong: 1px solid rgb(23,23,23);
--vercel-border-transparent: 1px solid transparent;

/* Typography (20) */
--font-size-xs: 12px; /* 11 elements — e.g. h2 "Get Started", h2 "Build", h2 "Scale" /* mined from computed styles */ */
--font-size-sm: 14px; /* 14 elements — e.g. span "Ask AI", span "Log In", span "Sign Up" /* mined from computed styles */ */
--font-size-md: 16px; /* 6 elements — e.g. a "Skip to content", li "ProductsAI Cloud
  
", li "ResourcesCompanyCust" /* mined from computed styles */ */
--font-weight-regular: 400; /* 14 elements — e.g. a "Skip to content", a "Enterprise", a "Pricing" /* mined from computed styles */ */
--font-weight-medium: 500; /* 17 elements — e.g. h2 "Get Started", h2 "Build", h2 "Scale" /* mined from computed styles */ */
--line-height-loose: 20px; /* 6 elements — e.g. span "Ask AI", span "Log In", span "Sign Up" /* mined from computed styles */ */
--vercel-font-sans: 'Geist', Arial, 'Apple Color Emoji', ...;
--vercel-font-mono: 'Geist Mono', monospace;
--vercel-font-size-xs: 12px;
--vercel-font-size-sm: 14px;
--vercel-font-size-md: 16px;
--vercel-font-weight-regular: 400;
--vercel-font-weight-medium: 500;
--vercel-font-weight-semibold: 600;
--vercel-line-height-loose: 20px;
--vercel-font-pixel-square: 'GeistPixelSquare', monospace;
--vercel-font-pixel-grid: 'GeistPixelGrid', monospace;
--vercel-font-size-lg: 32px;
--vercel-font-size-xl: 48px;
--vercel-line-height-heading: 40px;

/* Spacing (18) */
--banner-height: 0px;
--banner-min-height: 64px;
--space-xs: 8px; /* 3 elements — e.g. div .flex, div .flex, div .flex /* mined from computed styles */ */
--space-sm: 12px; /* 9 elements — e.g. div .flex, div .flex, div .flex /* mined from computed styles */ */
--space-md: 16px; /* 2 elements — e.g. main .px-4, main .px-4 /* mined from computed styles */ */
--space-lg: 24px; /* 4 elements — e.g. header .header-module__6nzVrW__header, header .header-module__6nzVrW__header, footer .max-w-[var(--ds-page-width-with-margin)] /* mined from computed styles */ */
--space-xl: 32px; /* 6 elements — e.g. header .header-module__6nzVrW__header, header .header-module__6nzVrW__header, header .header-module__6nzVrW__header /* mined from computed styles */ */
--space-2xl: 40px; /* 2 elements — e.g. footer .max-w-[var(--ds-page-width-with-margin)], footer .max-w-[var(--ds-page-width-with-margin)] /* mined from computed styles */ */
--vercel-space-xs: 8px;
--vercel-space-sm: 12px;
--vercel-space-md: 16px;
--vercel-space-lg: 24px;
--vercel-space-xl: 32px;
--vercel-space-2xl: 40px;
--vercel-space-3xl: 64px;
--vercel-space-2xs: 4px;
--vercel-banner-height: 0px;
--vercel-banner-min-height: 64px;

/* Radius (10) */
--radius-sm: 6px; /* 27 elements — e.g. button .button-module__QyrFCa__base "Ask AI", button .button-module__QyrFCa__base "Ask AI", button .button-module__QyrFCa__base /* mined from computed styles */ */
--radius-md: 50%; /* 1 element — e.g. button .toggle-module__HksKKG__mobileMenuToggle /* mined from computed styles */ */
--radius-lg: 64px; /* 5 elements — e.g. button "AI AppsAI Apps", button "Web AppsWeb Apps", button "EcommerceEcommerce" /* mined from computed styles */ */
--radius-full: 100px; /* 6 elements — e.g. a .button-module__QyrFCa__base "DeployStart Deployin", a .button-module__QyrFCa__base "Get a Demo", a .button-module__QyrFCa__base "DeployStart Deployin" /* mined from computed styles */ */
--vercel-radius-sm: 6px;
--vercel-radius-lg: 64px;
--vercel-radius-full: 100px;
--btn-primary-radius: var(--vercel-radius-full);
--card-radius: 0px;
--vercel-radius-md: 50%;

/* Effects (12) */
--vh100-offset: calc(var(--header-height) + var(--banner-height));
--caveats-toggle-true: var(--ds-blue-700);
--shadow-sm: rgb(235, 235, 235) 0px 0px 0px 1px; /* 2 elements — e.g. button .button-module__QyrFCa__base, button .button-module__QyrFCa__base /* mined from computed styles */ */
--shadow-md: rgba(0, 0, 0, 0.08) 0px 0px 0px 1px, rgba(0, 0, 0, 0.02) 0px 1px 1px 0px, rgba(0, 0, 0, 0.04) 0px 4px 8px 0px, rgb(250, 250, 250) 0px 0px 0px 1px, rgb(255, 255, 255) 0px 0px 0px 1px; /* 1 element — e.g. div .context-card-module__MV3-Va__contextCard /* mined from computed styles */ */
--vercel-shadow-sm: rgb(235,235,235) 0px 0px 0px 1px;
--vercel-shadow-md: rgba(0,0,0,0.08) 0px 0px 0px 1px, ...;
--card-shadow: rgba(0, 0, 0, 0.04) 0px 2px 2px 0px;
--input-shadow-focus: 0 0 0 1px var(--ds-gray-alpha-600), 0px 0px 0px 4px #00000029;
--input-shadow-error: 0 0 0 1px var(--ds-red-900), 0 0 0 4px var(--ds-red-300);
--vercel-shadow-none: none;
--vercel-shadow-card: rgba(0,0,0,0.04) 0px 2px 2px 0px;
--vercel-shadow-dropdown: (see Section 7);

/* Motion (97) */
----motion-new-dialog-module__nmtR7W__fadeIn: @keyframes new-dialog-module__nmtR7W__fadeIn { 
  0% { opacity: 0; }
  100% { opacity: 1; }
}; /* @keyframes new-dialog-module__nmtR7W__fadeIn */
----motion-new-dialog-module__nmtR7W__fadeOut: @keyframes new-dialog-module__nmtR7W__fadeOut { 
  0% { opacity: 1; }
  100% { opacity: 0; }
}; /* @keyframes new-dialog-module__nmtR7W__fadeOut */
----motion-grid-module__4pDFEa__xsDisappear: @keyframes grid-module__4pDFEa__xsDisappear { 
  90% { opacity: 1; }
  100% { opacity: 0; }
}; /* @keyframes grid-module__4pDFEa__xsDisappear */
----motion-grid-module__4pDFEa__smDisappear: @keyframes grid-module__4pDFEa__smDisappear { 
  90% { opacity: 1; }
  100% { opacity: 0; }
}; /* @keyframes grid-module__4pDFEa__smDisappear */
----motion-grid-module__4pDFEa__mdDisappear: @keyframes grid-module__4pDFEa__mdDisappear { 
  90% { opacity: 1; }
  100% { opacity: 0; }
}; /* @keyframes grid-module__4pDFEa__mdDisappear */
----motion-grid-module__4pDFEa__lgDisappear: @keyframes grid-module__4pDFEa__lgDisappear { 
  90% { opacity: 1; }
  100% { opacity: 0; }
}; /* @keyframes grid-module__4pDFEa__lgDisappear */
----motion-spinner-module__gyz83a__spin: @keyframes spinner-module__gyz83a__spin { 
  0% { opacity: 1; }
  100% { opacity: 0.15; }
}; /* @keyframes spinner-module__gyz83a__spin */
----motion-v0-avatar-module__Kz8jga__drawAndErase: @keyframes v0-avatar-module__Kz8jga__drawAndErase { 
  0% { stroke-dashoffset: 2px; }
  30%, 76% { stroke-dashoffset: 1px; }
  96%, 100% { stroke-dashoffset: 0; }
}; /* @keyframes v0-avatar-module__Kz8jga__drawAndErase */
----motion-v0-avatar-module__Kz8jga__drawAndEraseFirst: @keyframes v0-avatar-module__Kz8jga__drawAndEraseFirst { 
  0%, 9% { stroke-dashoffset: 0; }
  29%, 71% { stroke-dashoffset: 1px; }
  91%, 100% { stroke-dashoffset: 2px; }
}; /* @keyframes v0-avatar-module__Kz8jga__drawAndEraseFirst */
----motion-v0-avatar-module__Kz8jga__drawAndEraseSecond: @keyframes v0-avatar-module__Kz8jga__drawAndEraseSecond { 
  0%, 15% { stroke-dashoffset: 0; }
  35%, 59% { stroke-dashoffset: 1px; }
  79%, 100% { stroke-dashoffset: 2px; }
}; /* @keyframes v0-avatar-module__Kz8jga__drawAndEraseSecond */
----motion-v0-avatar-module__Kz8jga__drawAndEraseThird: @keyframes v0-avatar-module__Kz8jga__drawAndEraseThird { 
  0%, 23% { stroke-dashoffset: 2px; }
  39%, 65% { stroke-dashoffset: 1px; }
  80%, 100% { stroke-dashoffset: 0; }
}; /* @keyframes v0-avatar-module__Kz8jga__drawAndEraseThird */
----motion-code-block-module__NOThwW__hide: @keyframes code-block-module__NOThwW__hide { 
  0% { opacity: 1; transform: tran… <0.3KB elided>; /* @keyframes code-block-module__NOThwW__hide */
----motion-code-block-module__NOThwW__show: @keyframes code-block-module__NOThwW__show { 
  0% { opacity: 0; transform: tran… <0.4KB elided>; /* @keyframes code-block-module__NOThwW__show */
----motion-copy-button-module__8qN89q__fadeIn: @keyframes copy-button-module__8qN89q__fadeIn { 
  0% { opacity: 0; scale: 0.5; }
  100% { opacity: 1; scale: 1; }
}; /* @keyframes copy-button-module__8qN89q__fadeIn */
----motion-copy-button-module__8qN89q__fadeOut: @keyframes copy-button-module__8qN89q__fadeOut { 
  0% { opacity: 1; scale: 1; }
  100% { opacity: 0; scale: 0.5; }
}; /* @keyframes copy-button-module__8qN89q__fadeOut */
----motion-tooltip-module__VEGyfq__fadeIn: @keyframes tooltip-module__VEGyfq__fadeIn { 
  0% { opacity: 0; }
  100% { opacity: 1; pointer-events: all; }
}; /* @keyframes tooltip-module__VEGyfq__fadeIn */
----motion-booting-module__VfenaW__flicker: @keyframes booting-module__VfenaW__flicker { 
  0% { opacity: 0.27861; }
  5% {… <0.5KB elided>; /* @keyframes booting-module__VfenaW__flicker */
----motion-booting-module__VfenaW__dots: @keyframes booting-module__VfenaW__dots { 
  0%, 20% { content: ""; }
  40% { content: "."; }
  60% { content: ".."; }
  80%, 100% { content: "..."; }
}; /* @keyframes booting-module__VfenaW__dots */
----motion-content-module__Z9Gvsq__fadeIn: @keyframes content-module__Z9Gvsq__fadeIn { 
  0% { opacity: 0; }
  100% { opacity: 1; }
}; /* @keyframes content-module__Z9Gvsq__fadeIn */
----motion-campaign-events-list-module__uAFmPG__fade-in: @keyframes campaign-events-list-module__uAFmPG__fade-in { 
  0% { opacity: 0; }
  100% { opacity: 1; }
}; /* @keyframes campaign-events-list-module__uAFmPG__fade-in */
----motion-campaign-datetime-location-module__zm99lG__fadeIn: @keyframes campaign-datetime-location-module__zm99lG__fadeIn { 
  0% { opacity: 0; }
  100% { opacity: 1; }
}; /* @keyframes campaign-datetime-location-module__zm99lG__fadeIn */
----motion-navigation-menu-module__AENi4G__scaleIn: @keyframes navigation-menu-module__AENi4G__scaleIn { 
  0% { opacity: 0; transform: rotateX(-30deg) scale(0.9); }
  100% { opacity: 1; transform: rotateX(0deg) scale(1); }
}; /* @keyframes navigation-menu-module__AENi4G__scaleIn */
----motion-navigation-menu-module__AENi4G__scaleOut: @keyframes navigation-menu-module__AENi4G__scaleOut { 
  0% { opacity: 1; transform: rotateX(0deg) scale(1); }
  100% { opacity: 0; transform: rotateX(-10deg) scale(0.95); }
}; /* @keyframes navigation-menu-module__AENi4G__scaleOut */
----motion-navigation-menu-module__AENi4G__enterFromRight: @keyframes navigation-menu-module__AENi4G__enterFromRight { 
  0% { opacity: 0; transform: translate(200px); }
  100% { opacity: 1; transform: translate(0px); }
}; /* @keyframes navigation-menu-module__AENi4G__enterFromRight */
----motion-navigation-menu-module__AENi4G__enterFromLeft: @keyframes navigation-menu-module__AENi4G__enterFromLeft { 
  0% { opacity: 0; transform: translate(-200px); }
  100% { opacity: 1; transform: translate(0px); }
}; /* @keyframes navigation-menu-module__AENi4G__enterFromLeft */
----motion-navigation-menu-module__AENi4G__exitToRight: @keyframes navigation-menu-module__AENi4G__exitToRight { 
  0% { opacity: 1; transform: translate(0px); }
  100% { opacity: 0; transform: translate(200px); }
}; /* @keyframes navigation-menu-module__AENi4G__exitToRight */
----motion-navigation-menu-module__AENi4G__exitToLeft: @keyframes navigation-menu-module__AENi4G__exitToLeft { 
  0% { opacity: 1; transform: translate(0px); }
  100% { opacity: 0; transform: translate(-200px); }
}; /* @keyframes navigation-menu-module__AENi4G__exitToLeft */
----motion-navigation-menu-module__AENi4G__slideDown: @keyframes navigation-menu-module__AENi4G__slideDown { 
  0% { transform: translateY(-8px); }
  100% { transform: translateY(0px); }
}; /* @keyframes navigation-menu-module__AENi4G__slideDown */
----motion-navigation-menu-module__AENi4G__slideUp: @keyframes navigation-menu-module__AENi4G__slideUp { 
  0% { opacity: 1; transform: translateY(0px); }
  100% { opacity: 0; transform: translateY(-8px); }
}; /* @keyframes navigation-menu-module__AENi4G__slideUp */
----motion-form-content-module__PGBHYG__pulse-animation: @keyframes form-content-module__PGBHYG__pulse-animation { 
  0% { box-shadow: 0… <0.2KB elided>; /* @keyframes form-content-module__PGBHYG__pulse-animation */
----motion-form-content-module__PGBHYG__pop-button: @keyframes form-content-module__PGBHYG__pop-button { 
  0% { transform: scale(1); }
  5% { transform: scale(1.05); }
  10% { transform: scale(1); }
  100% { transform: scale(1); }
}; /* @keyframes form-content-module__PGBHYG__pop-button */
----motion-form-content-module__PGBHYG__pulse-button: @keyframes form-content-module__PGBHYG__pulse-button { 
  0% { outline-offset: 0… <0.2KB elided>; /* @keyframes form-content-module__PGBHYG__pulse-button */
----motion-form-content-module__PGBHYG__fadeIn: @keyframes form-content-module__PGBHYG__fadeIn { 
  0% { opacity: 0; }
  100% { opacity: 1; }
}; /* @keyframes form-content-module__PGBHYG__fadeIn */
----motion-soft-fade-in: @keyframes soft-fade-in { 
  0% { opacity: 0.3; }
  100% { opacity: 1; }
}; /* @keyframes soft-fade-in */
----motion-show: @keyframes show { 
  0% { transform: translate3d(0, var(--translate-y-start), 0); opacity: 0; }
  100% { transform: translate3d(0, var(--translate-y-end), 0); opacity: 1; }
}; /* @keyframes show */
----motion-hide: @keyframes hide { 
  0% { transform: translate3d(0, var(--translate-y-end), 0); opacity: 1; }
  100% { transform: translate3d(0, var(--translate-y-start), 0); opacity: 0; }
}; /* @keyframes hide */
----motion-fade-in: @keyframes fade-in { 
  0% { opacity: 0; }
  100% { opacity: 1; }
}; /* @keyframes fade-in */
----motion-fade-out: @keyframes fade-out { 
  0% { opacity: 1; }
  100% { opacity: 0; }
}; /* @keyframes fade-out */
----motion-turbohero-background-module__UpVgvG__go-up: @keyframes turbohero-background-module__UpVgvG__go-up { 
  0% { transform: translateY(0px); }
  100% { transform: translateY(100%); }
}; /* @keyframes turbohero-background-module__UpVgvG__go-up */
----motion-turbohero-background-module__UpVgvG__pulse-frames: @keyframes turbohero-background-module__UpVgvG__pulse-frames { 
  0% { transform: translateY(0%); }
  50% { transform: translateY(200%); }
  100% { transform: translateY(200%); }
}; /* @keyframes turbohero-background-module__UpVgvG__pulse-frames */
----motion-turbohero-module__Q7WFCG__spin: @keyframes turbohero-module__Q7WFCG__spin { 
  0% { transform: translate(-50%, -50%) rotate(360deg); }
  100% { transform: translate(-50%, -50%) rotate(0deg); }
}; /* @keyframes turbohero-module__Q7WFCG__spin */
----motion-v0-cursor-reveal-module__eaE5iq__reveal: @keyframes v0-cursor-reveal-module__eaE5iq__reveal { 
  100% { transform: translate(100%); }
}; /* @keyframes v0-cursor-reveal-module__eaE5iq__reveal */
----motion-v0-cursor-reveal-module__eaE5iq__fluctuate: @keyframes v0-cursor-reveal-module__eaE5iq__fluctuate { 
  0% { opacity: 1; heig… <0.3KB elided>; /* @keyframes v0-cursor-reveal-module__eaE5iq__fluctuate */
----motion-with-redirect-module__disV0a__fadeIn: @keyframes with-redirect-module__disV0a__fadeIn { 
  0% { opacity: 0; }
  100% { opacity: 1; }
}; /* @keyframes with-redirect-module__disV0a__fadeIn */
----motion-v-0-mark-animated-module__vqP9MW__drawPath: @keyframes v-0-mark-animated-module__vqP9MW__drawPath { 
  0% { stroke-dashoffset: var(--start-offset,2); }
  100% { stroke-dashoffset: var(--end-offset,1); }
}; /* @keyframes v-0-mark-animated-module__vqP9MW__drawPath */
----motion-botid-hero-module__HXoBNa__invisibleReveal: @keyframes botid-hero-module__HXoBNa__invisibleReveal { 
  100% { opacity: 1; }
}; /* @keyframes botid-hero-module__HXoBNa__invisibleReveal */
----motion-botid-hero-module__HXoBNa__letterReveal: @keyframes botid-hero-module__HXoBNa__letterReveal { 
  100% { opacity: 0; filter: blur(4px); transform: scale(1.3); }
}; /* @keyframes botid-hero-module__HXoBNa__letterReveal */
----motion-keywords-module__EwR1lq__dynamic: @keyframes keywords-module__EwR1lq__dynamic { 
  0% { transform: translateY(10%); }
  50% { transform: translateY(-10%); }
  100% { transform: translateY(10%); }
}; /* @keyframes keywords-module__EwR1lq__dynamic */
----motion-keywords-module__EwR1lq__twinkle: @keyframes keywords-module__EwR1lq__twinkle { 
  0% { opacity: 0.2; }
  50% { opacity: 1; }
  100% { opacity: 0.2; }
}; /* @keyframes keywords-module__EwR1lq__twinkle */
----motion-keywords-module__EwR1lq__fade-in: @keyframes keywords-module__EwR1lq__fade-in { 
  0% { opacity: 0; }
  100% { opacity: 1; }
}; /* @keyframes keywords-module__EwR1lq__fade-in */
----motion-new-dash-module__7_vPAa__reveal-slide-in: @keyframes new-dash-module__7_vPAa__reveal-slide-in { 
  0% { opacity: 0; transform: translateY(2rem); }
  100% { opacity: 1; transform: translate(0px, 0px); }
}; /* @keyframes new-dash-module__7_vPAa__reveal-slide-in */
----motion-form-module__YgG6pa__fade-in: @keyframes form-module__YgG6pa__fade-in { 
  0% { opacity: 0; }
  100% { opacity: 1; }
}; /* @keyframes form-module__YgG6pa__fade-in */
----motion-dot-com-module__v6_SFa__move: @keyframes dot-com-module__v6_SFa__move { 
  0% { top: 0px; }
  33.33% { top: -100%; }
  66.66% { top: -200%; }
  100% { top: -300%; }
}; /* @keyframes dot-com-module__v6_SFa__move */
----motion-hero-section-module__DBsvqq__letterReveal: @keyframes hero-section-module__DBsvqq__letterReveal { 
  0% { opacity: 0; trans… <0.3KB elided>; /* @keyframes hero-section-module__DBsvqq__letterReveal */
----motion-botid-explainer-module__CbG1Bq__denyAnim: @keyframes botid-explainer-module__CbG1Bq__denyAnim { 
  0% { opacity: 0; transf… <0.2KB elided>; /* @keyframes botid-explainer-module__CbG1Bq__denyAnim */
----motion-botid-explainer-module__CbG1Bq__shakeAnim: @keyframes botid-explainer-module__CbG1Bq__shakeAnim { 
  0% { transform: scaleX… <0.3KB elided>; /* @keyframes botid-explainer-module__CbG1Bq__shakeAnim */
----motion-botid-explainer-module__CbG1Bq__approveAnim: @keyframes botid-explainer-module__CbG1Bq__approveAnim { 
  0% { opacity: 0; tra… <0.2KB elided>; /* @keyframes botid-explainer-module__CbG1Bq__approveAnim */
----motion-botid-explainer-module__CbG1Bq__ascendAnim: @keyframes botid-explainer-module__CbG1Bq__ascendAnim { 
  0% { transform: scale… <0.3KB elided>; /* @keyframes botid-explainer-module__CbG1Bq__ascendAnim */
----motion-botid-explainer-module__CbG1Bq__gate: @keyframes botid-explainer-module__CbG1Bq__gate { 
  0% { opacity: 0; }
  25% { opacity: 0; }
  50% { opacity: 1; }
  80% { opacity: 0; }
}; /* @keyframes botid-explainer-module__CbG1Bq__gate */
----motion-botid-explainer-module__CbG1Bq__gateLong: @keyframes botid-explainer-module__CbG1Bq__gateLong { 
  0% { opacity: 0; }
  45% { opacity: 0; }
  50% { opacity: 1; }
  80% { opacity: 0; }
}; /* @keyframes botid-explainer-module__CbG1Bq__gateLong */
----motion-cursor-module__AEUiAq__float: @keyframes cursor-module__AEUiAq__float { 
  0% { transform: translate(0px); }
  50% { transform: translate(var(--x), var(--y)); }
  100% { transform: translate(0px); }
}; /* @keyframes cursor-module__AEUiAq__float */
----motion-hero-module__K2ervW__blink: @keyframes hero-module__K2ervW__blink { 
  0% { opacity: 0; }
}; /* @keyframes hero-module__K2ervW__blink */
----motion-triangle-module__d-3XEG__slideControls: @keyframes triangle-module__d-3XEG__slideControls { 
  100% { transform: translate(-50%, -28px); }
}; /* @keyframes triangle-module__d-3XEG__slideControls */
----motion-generic-salesforce-form-module__iFrvSq__fade-in: @keyframes generic-salesforce-form-module__iFrvSq__fade-in { 
  0% { opacity: 0; }
  100% { opacity: 1; }
}; /* @keyframes generic-salesforce-form-module__iFrvSq__fade-in */
----motion-modal-appear: @keyframes modal-appear { 
  0% { opacity: 0; transform: translateY(20px); }
  100% { opacity: 1; transform: translateY(0px); }
}; /* @keyframes modal-appear */
----motion-thinking-loader: @keyframes thinking-loader { 
  0% { background-position: 100% center; }
  100% { background-position: 0% center; }
}; /* @keyframes thinking-loader */
----motion-blink: @keyframes blink { 
  0% { opacity: 0; }
  50% { opacity: 1; }
  100% { opacity: 0; }
}; /* @keyframes blink */
----motion-bounce: @keyframes bounce { 
  0%, 100% { animation-timing-function: cubic-bezier(0.8, 0… <0.2KB elided>; /* @keyframes bounce */
----motion-flip-back: @keyframes flip-back { 
  0% { transform: rotateY(180deg); }
  100% { transform: rotateY(0deg); }
}; /* @keyframes flip-back */
----motion-flip-front: @keyframes flip-front { 
  0% { transform: rotateY(0deg); }
  100% { transform: rotateY(180deg); }
}; /* @keyframes flip-front */
----motion-logo-carousel: @keyframes logo-carousel { 
  0% { opacity: 0; }
  3% { opacity: 1; }
  22% { opacity: 1; }
  25% { opacity: 0; }
  100% { opacity: 0; }
}; /* @keyframes logo-carousel */
----motion-pulse: @keyframes pulse { 
  50% { opacity: 0.5; }
}; /* @keyframes pulse */
----motion-sandbox-left: @keyframes sandbox-left { 
  0% { transform: translate(0px) rotate(0deg); }
  50… <0.2KB elided>; /* @keyframes sandbox-left */
----motion-sandbox-left-reverse: @keyframes sandbox-left-reverse { 
  0% { z-index: 0; opacity: 0.5; transform: t… <0.2KB elided>; /* @keyframes sandbox-left-reverse */
----motion-sandbox-right: @keyframes sandbox-right { 
  0% { transform: translate(0px) rotate(0deg); }
  50% { transform: translate(80px) rotate(6deg); }
  100% { z-index: 10; transform: translate(0px) rotate(0deg); }
}; /* @keyframes sandbox-right */
----motion-sandbox-right-reverse: @keyframes sandbox-right-reverse { 
  0% { z-index: 10; transform: translate(0px… <0.2KB elided>; /* @keyframes sandbox-right-reverse */
----motion-slide-in: @keyframes slide-in { 
  0% { opacity: 0; transform: translateY(75%); }
  100% { opacity: 1; transform: translateY(0px); }
}; /* @keyframes slide-in */
----motion-spin: @keyframes spin { 
  100% { transform: rotate(360deg); }
}; /* @keyframes spin */
----motion-enter: @keyframes enter { 
  0% { opacity: var(--tw-enter-opacity,1); transform: transl… <0.3KB elided>; /* @keyframes enter */
----motion-exit: @keyframes exit { 
  100% { opacity: var(--tw-exit-opacity,1); transform: transl… <0.3KB elided>; /* @keyframes exit */
----motion-blue-glow: @keyframes blue-glow { 
  0%, 100% { content: var(--tw-content); box-shadow: 0 0… <0.2KB elided>; /* @keyframes blue-glow */
----motion-codeblock-module__Ybl_QW__blastIn: @keyframes codeblock-module__Ybl_QW__blastIn { 
  0% { opacity: 0; filter: blur(4px); transform: scale(1.1); }
  100% { opacity: 1; filter: blur(); transform: scale(1); }
}; /* @keyframes codeblock-module__Ybl_QW__blastIn */
----motion-globe-module__QBqKTa__blink: @keyframes globe-module__QBqKTa__blink { 
  0% { opacity: 0; }
}; /* @keyframes globe-module__QBqKTa__blink */
----motion-fadeIn: @keyframes fadeIn { 
  0% { opacity: 0; }
  100% { opacity: 1; }
}; /* @keyframes fadeIn */
----motion-fadeOut: @keyframes fadeOut { 
  100% { opacity: 0; }
}; /* @keyframes fadeOut */
----motion-slideFromBottom: @keyframes slideFromBottom { 
  0% { transform: translate3d(0,var(--initial-transform,100%),0); }
  100% { transform: translate3d(0px, 0px, 0px); }
}; /* @keyframes slideFromBottom */
----motion-slideToBottom: @keyframes slideToBottom { 
  100% { transform: translate3d(0,var(--initial-transform,100%),0); }
}; /* @keyframes slideToBottom */
----motion-slideFromTop: @keyframes slideFromTop { 
  0% { transform: translate3d(0,calc(var(--initial-transform,100%) * -1),0); }
  100% { transform: translate3d(0px, 0px, 0px); }
}; /* @keyframes slideFromTop */
----motion-slideToTop: @keyframes slideToTop { 
  100% { transform: translate3d(0,calc(var(--initial-transform,100%) * -1),0); }
}; /* @keyframes slideToTop */
----motion-slideFromLeft: @keyframes slideFromLeft { 
  0% { transform: translate3d(calc(var(--initial-transform,100%) * -1),0,0); }
  100% { transform: translate3d(0px, 0px, 0px); }
}; /* @keyframes slideFromLeft */
----motion-slideToLeft: @keyframes slideToLeft { 
  100% { transform: translate3d(calc(var(--initial-transform,100%) * -1),0,0); }
}; /* @keyframes slideToLeft */
----motion-slideFromRight: @keyframes slideFromRight { 
  0% { transform: translate3d(var(--initial-transform,100%),0,0); }
  100% { transform: translate3d(0px, 0px, 0px); }
}; /* @keyframes slideFromRight */
----motion-slideToRight: @keyframes slideToRight { 
  100% { transform: translate3d(var(--initial-transform,100%),0,0); }
}; /* @keyframes slideToRight */
--duration-fast: 0.09s; /* 4 elements — e.g. button, button, button /* mined from computed styles */ */
--duration-base: 0.15s; /* 6 elements — e.g. button, button, p /* mined from computed styles */ */
--duration-slow: 0.3s; /* 4 elements — e.g. div, div, div /* mined from computed styles */ */
--ease-default: ease; /* 196 elements — e.g. button, button, button /* mined from computed styles */ */
```

## Appendix B: Token Source Metadata

```
tokenSource: reconstructed-from-computed
extractedCSSVarsCount: 5
reconstructedTokenCount: ~45
confidence: low-to-high (varies per token — see inline annotations)
```

### Extraction Method
- **5 CSS custom properties** extracted directly from the site stylesheet: `--banner-height`, `--banner-min-height`, `--vh100-offset`, `--caveats-toggle-false`, `--caveats-toggle-true`
- **Curated token set (25 tokens)** was derived by the extraction pipeline from computed element styles, clustered by value similarity
- **Remaining tokens** were synthesised in this document by:
  1. **Colour clustering:** grouping by hue family (`rgb(23,23,23)`, `rgb(77,77,77)`, `rgb(235,235,235)`, `#ffffff`) → mapped to semantic intent (primary text, secondary text, border, surface)
  2. **Spacing grid analysis:** values 8/12/16/24/32/40/64 confirmed as multiples on an 8px base grid
  3. **Radius census:** 27 elements at `6px`, 1 at `50%`, 5 at `64px`, 6 at `100px` → distinct semantic roles assigned based on element context (card vs button vs CTA vs icon)
  4. **Typography composite construction:** computed styles for `h1`, `h2`, `h3`, `body`, `button_primary`, `label`, `link`, `code` bundled into composite groups

### Vercel Design System (DS) Tokens
The site references a `--ds-*` token namespace (e.g. `--ds-blue-700`, `--ds-gray-alpha-500`, `--ds-red-900`, `--ds-focus-ring`, `--ds-background-200`) throughout interactive state CSS. These are tokens from Vercel's internal **Geist Design System** — they are **not fully extractable** from the public site. They should be treated as:
- **High confidence in intent** (semantic naming is self-documenting)
- **[TBD - extract manually]** for exact values (requires access to the `@vercel/geist` npm package or internal design token export)

### Notes on Detected Libraries
- **Tailwind CSS:** Present (utility classes detected, `@keyframes enter/exit` from `tailwindcss-animate` detected). The site appears to use Tailwind v3 (utility-class-based, no CSS vars via `@theme`).
- **Bootstrap:** Detected as a dependency but unlikely to govern the primary design system — Vercel's component styling is custom CSS Modules + Tailwind, not Bootstrap components.
- **CSS Modules:** Confirmed — all component class names follow the `[component]-module__[hash]__[name]` pattern throughout extracted interactive states.

### Confidence Summary

| Category | Confidence | Basis |
|----------|-----------|-------|
| Font families | **High** | Directly extracted from `@font-face` declarations |
| Type sizes (h1, h3) | **High** | Computed styles — element-level |
| Type sizes (h2) | **High** | Computed styles — but h2 is used as a "section label" (14px), not a traditional heading |
| Spacing scale | **High** | Multiple element confirmations, clean 8px grid |
| Radius values | **High** | Radius census from 39 identified elements |
| Shadow tokens | **High** | Directly in curated set from CSS |
| Motion durations | **High** | Multiple element confirmations |
| Colour — surface/text | **Medium-High** | Computed styles but no dark-mode separation |
| Colour — interactive (hover/active) | **Moderate** | Inferred from computed + interactive state CSS |
| Card hover | **Moderate** | Inferred from pattern — not directly extracted |
| Z-index scale | **Low** | Reconstructed from component hierarchy — extract manually |
| Dark mode tokens | **[TBD]** | `.dark-theme` class confirmed but tokens not extracted |