runwayml.com

DESIGN.md

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

---
version: alpha
name: runwayml.com
description: "Light product system built on #ffffff. Type anchored in abcNormal at 48px / weight 400. Extracted automatically from https://runwayml.com/ — every value from getComputedStyle(), no approximation."
narrative: |
  runwayml.com is built on a pure-white canvas (rgb(255,255,255)).
  AbcNormal as the primary typeface.

colors:
  background: "#ffffff"
  surface-1: "#e5e7eb"
  surface-2: "#eef1f5"
  ink: "#404040"
  ink-subtle: "#0c0c0c"
  hairline: "#404040"

typography:
  display-xl:
    fontFamily: "abcNormal"
    fontSize: 48px
    fontWeight: 400
    lineHeight: 1
    letterSpacing: -1.2px
  display-md:
    fontFamily: "abcNormal"
    fontSize: 14px
    fontWeight: 500
    lineHeight: 1.43
    letterSpacing: 0.35px
  headline:
    fontFamily: "abcNormal"
    fontSize: 24px
    fontWeight: 400
    lineHeight: 1
    letterSpacing: 0
  body:
    fontFamily: "abcNormal"
    fontSize: 16px
    fontWeight: 400
    lineHeight: 1.5
    letterSpacing: 0
  body-sm:
    fontFamily: "abcNormal"
    fontSize: 11px
    fontWeight: 450
    lineHeight: 1.3
    letterSpacing: 0
  button:
    fontFamily: "abcNormal"
    fontSize: 16px
    fontWeight: 600
    lineHeight: 1.5
    letterSpacing: 0

rounded:
  none: 0px
  xs: 4px
  sm: 8px
  md: 12px
  lg: 16px
  xl: 16px
  xxl: 24px
  pill: 9999px

spacing:
  xxs: 2px
  xs: 4px
  sm: 8px
  md: 16px
  lg: 24px
  xl: 32px
  xxl: 64px
  section: 80px

components:
  button-ghost:
    backgroundColor: "transparent"
    textColor: "{colors.background}"
    typography: "{typography.display-md}"
    rounded: "{rounded.xs}"
    padding: 4px 8px
  button-light--invert:
    backgroundColor: "{colors.surface-2}"
    textColor: "#1a1a1a"
    typography: "{typography.display-md}"
    rounded: "{rounded.xs}"
    padding: 6px 10px
  button-secondary:
    backgroundColor: "#262626"
    textColor: "{colors.background}"
    typography: "{typography.display-md}"
    rounded: "{rounded.xs}"
    padding: 6px 10px
  navigation-main-nav:
    backgroundColor: "transparent"
    typography: "{typography.body}"
    rounded: "{rounded.none}"
  tab-ghost-tab:
    backgroundColor: "transparent"
    textColor: "{colors.background}"
    typography: "{typography.body}"
    rounded: "{rounded.none}"
  alert-alert-banner:
    backgroundColor: "#09090b"
    textColor: "{colors.background}"
    typography: "{typography.body}"
    rounded: "{rounded.lg}"
    padding: 12px 16px

extracted_at: "2026-05-30T20:39:48.850Z"
completeness: 71
scoreVersion: "v2"

---

# Design System — runwayml.com
> Extracted automatically by Clone Architect from https://runwayml.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**: `N/A` 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: 24px.
> - **Default radius**: 8px on buttons/inputs. Pills (`9999px`) only for icon-buttons or status chips.
> - **Forbidden**: Do NOT introduce heavy box-shadows — this system relies on borders for separation
>
> **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

runwayml.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 **abcNormal**. Headlines run at a remarkably light weight (400) — restraint over assertion, creating an editorial calm that invites reading rather than demanding it. Negative letter-spacing at display sizes (-1.2px at 48px) compresses headlines into engineered blocks, dense and precise. 

Body text reads in Dark Gray (`#404040`). Shadow is absent by design — depth is conveyed through borders, spacing, and color differentiation rather than light simulation. 
Motion design uses smooth easing curves for polished state transitions. 

**Key Characteristics:**
- Background: Pure White (`#ffffff`)
- Primary typeface: abcNormal
- Primary text: Dark Gray (`#404040`)
- Accent: Medium Gray (`#808080`)
- Display: 48px weight 400, letter-spacing -1.2px
- Custom fonts loaded: abcNormal, abcNormal Fallback, timesNow, timesNow Fallback

## 2. Color Palette & Roles

### Background & Surface
- **Pure White** (`#ffffff`): Page background (primary)
- **Light Gray** (`#e5e7eb`): Surface / elevated background
- **Light Gray** (`#eef1f5`): Surface / elevated background
- **Off-Cream** (`#f7f7f7`): Surface / elevated background
- **Light Gray** (`#e0e4eb`): Surface / elevated background

### Text & Content
- **Dark Gray** (`#404040`): Primary body text
- **Pure Black** (`#000000`): Secondary text
- **Jet Black** (`#0c0c0c`): Secondary text
- **Near Black** (`#1a1a1a`): Secondary text
- **Warm Brown** (`#262626`): Secondary text

### Accent & Interactive
- **Slate Gray** (`#6b7280`): Interactive / accent

### Full Extracted Palette
16 distinct colors detected on the live page (11 categorized above + 5 additional below). Every value is a real `getComputedStyle()` color — no approximation.

- `rgba(9, 9, 11, 0.7)` — Translucent Jet Black (70%)
- `#27272a` — Warm Brown
- `#2a2a2a` — Warm Brown
- `#666e7a` — Dim Gray
- `#999999` — Cool Gray

### CSS Custom Properties (Design Tokens)

**Shadow Token**
- `--tw-ring-offset-shadow`: `0 0 #0000`
- `--tw-ring-shadow`: `0 0 #0000`
- `--tw-shadow`: `0 0 #0000`
- `--tw-shadow-colored`: `0 0 #0000`

**Spacing Token**
- `--tw-numeric-spacing`: ``
- `--tw-border-spacing-x`: `0`
- `--tw-border-spacing-y`: `0`

**Other tokens**
- `--tw-bg-opacity`: `1`
- `--tw-text-opacity`: `1`
- `--tw-ring-color`: `#3b82f680`
- `--tw-ring-offset-color`: `#fff`

## 3. Typography Rules

### Font Families
- **Primary**: `abcNormal`
- **Secondary**: `abcNormal Fallback`
- **Font 3**: `timesNow`
- **Font 4**: `timesNow Fallback`

### Custom Fonts Loaded
- **abcNormal** weight 300 (normal)
- **abcNormal** weight 400 (normal)
- **abcNormal** weight 500 (normal)
- **abcNormal** weight 600 (normal)
- **abcNormal Fallback** weight normal (normal)
- **timesNow** weight normal (normal)
- **timesNow Fallback** weight normal (normal)

### Typography Hierarchy

| Role | Font | Size | Weight | Line Height | Letter Spacing | Notes |
|------|------|------|--------|-------------|----------------|-------|
| Display Hero | abcNormal | 48px | 400 | 1 | -1.2px | Main headline (h1) |
| Label Heading | abcNormal | 24px | 400 | 1 | normal | Small heading (H4) |
| Label Heading | abcNormal | 16px | 500 | 1 | normal | Small heading (H5) |
| Body | abcNormal | 16px | 400 | 1.5 | normal | Standard reading text |
| Button Large | abcNormal | 16px | 600 | 1.5 | normal | Button label (16px) |
| Sub-heading | abcNormal | 14px | 500 | 1.43 | 0.35px | Third-level heading (h3) |
| Button | abcNormal | 14px | 600 | 1.43 | normal | Button label (14px) |
| Link Small | abcNormal | 11px | 450 | 1.3 | normal | Link (11px) — Decoration: none |

### Full Font Size Scale

Sizes detected in the design (descending): `48px`, `40px`, `36px`, `24px`, `20px`, `16px`, `14px`, `13px`, `11px`

> 4 size(s) detected outside the sampled hierarchy (40px, 36px, 20px, 13px). These appear on elements not in the sampled set — likely additional display sizes, marketing-section overrides, or third-party-widget styles.

## 4. Component Stylings

### Buttons

**Ghost**
- Background: `transparent`
- Text: `#ffffff` `{colors.background}`
- Padding: 4px 8px
- Radius: 4px
- Font: 14px weight 600
- Use: Subtle action, toolbar, nav button
- Focus: boxShadow: `rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0`

**Light / Invert**
- Background: `#eef1f5` `{colors.surface-2}`
- Text: `#1a1a1a`
- Padding: 6px 10px
- Radius: 6px
- Font: 14px weight 600
- Use: Bright CTA on dark sections
- Focus: boxShadow: `rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0`

**Secondary**
- Background: `#262626`
- Text: `#ffffff` `{colors.background}`
- Padding: 6px 10px
- Radius: 6px
- Font: 14px weight 600
- Use: Secondary action
- Focus: boxShadow: `rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0`

**Light / Invert**
- Background: `#f7f7f7`
- Text: `#0c0c0c` `{colors.ink-subtle}`
- Padding: 8px 12px
- Radius: 8px
- Font: 16px weight 600
- Use: Bright CTA on dark sections
- Focus: boxShadow: `rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0`

**Secondary**
- Background: `#262626`
- Text: `#ffffff` `{colors.background}`
- Padding: 4px 8px
- Radius: 4px
- Font: 14px weight 600
- Use: Secondary action
- Focus: boxShadow: `rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0`

**Light / Invert**
- Background: `#ffffff` `{colors.background}`
- Text: `#1a1a1a`
- Padding: 4px 8px
- Radius: 4px
- Font: 14px weight 600
- Use: Bright CTA on dark sections
- Focus: boxShadow: `rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0`

**Subtle**
- Background: `rgba(247, 247, 247, 0.05)`
- Text: `#ffffff` `{colors.background}`
- Padding: 6px 10px
- Radius: 6px
- Font: 14px weight 600
- Use: Quiet action against page bg
- Focus: boxShadow: `rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0`

### Navigation

**Main Nav**
- Background: `transparent`
- Padding: 0px
- Radius: none
- Font: 16px weight 400
- Use: Fixed/sticky block nav — N/A items
- Hover: color: `#d0d4d4`, outline: `rgb(208, 212, 212) none 3px`

### Tabs

**Ghost Tab**
- Background: `transparent`
- Text: `#ffffff` `{colors.background}`
- Padding: 0px
- Radius: 0px
- Font: 16px weight 400
- Use: Navigation tabs, filter tabs

### Alerts

**Alert Banner**
- Background: `rgba(9, 9, 11, 0.7)`
- Text: `#ffffff` `{colors.background}`
- Padding: 12px 16px
- Radius: 16px
- Border: 1px solid rgb(39, 39, 42)
- Font: 16px weight 400
- Use: System alert, banner notification, toast


## 4b. Component Behaviors (State Matrix)

### Interaction State Narrative

- **Button**:
  - **focus:** shadow added
- **Link**:
  - **hover:** text #c8c8c8 → #d0d4d4
- **NavLink**:
  - **hover:** text #ffffff → #d0d4d4

*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(255, 255, 255)"
    focus:
      bg: "rgba(0, 0, 0, 0)"
      fg: "rgb(255, 255, 255)"
      shadow: "rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0"
  link:
    default:
      bg: "rgba(0, 0, 0, 0)"
      fg: "rgb(200, 200, 200)"
    hover:
      bg: "rgba(0, 0, 0, 0)"
      fg: "rgb(208, 212, 212)"
  navLink:
    default:
      bg: "rgba(0, 0, 0, 0)"
      fg: "rgb(255, 255, 255)"
    hover:
      bg: "rgba(0, 0, 0, 0)"
      fg: "rgb(208, 212, 212)"
  tab:
    default:
      bg: "rgba(0, 0, 0, 0)"
      fg: "rgb(255, 255, 255)"
  footerLink:
    default:
      bg: "rgba(0, 0, 0, 0)"
      fg: "rgb(255, 255, 255)"
    hover:
      bg: "rgba(0, 0, 0, 0)"
      fg: "rgb(255, 255, 255)"
```

**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`, `Light / Invert`, `Secondary`, `Light / Invert`, `Secondary`
- **DO NOT introduce new buttons variants** without justification

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

### Tabs
- **1 shape(s)** in this system: `Ghost Tab`
- **DO NOT introduce new tabs variants** without justification

### Alerts
- **1 shape(s)** in this system: `Alert Banner`
- **DO NOT introduce new alerts variants** without justification

## 5. Layout Principles

### Layout Type
**top-nav + content**

### Grid
Single column, centered content

### Max Width
1200px

### Spacing System
Compact spacing — information density prioritized

| Token | Value |
|-------|-------|
| xxs | 2px |
| xs | 4px |
| sm | 8px |
| md | 16px |
| base | 24px |
| lg | 24px |
| 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 | 12px | 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` |
| Navigation | `none` |
| Tabs | `0px` |
| Alerts | `16px` |
| Page Body | `0px` |

**Shape Personality**: Generously Rounded — Soft, friendly corners (8px+). Approachable, consumer-facing feel.

**Full Radius Spectrum**: 4px, 6px, 8px, 12px, 16px (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** | `24px` | Within a section, between content groups |
| **card** | `16px` | 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).

**4/8 structural patterns detected.**

### Hero Pattern

- **Composition:** centered — Centered composition — heading + subheading + CTAs stacked vertically, content centered horizontally. Common for SaaS marketing pages.
- **Viewport coverage:** full-viewport hero (≥70% screen height)
- **Heading:** "Building AI to Simulate the World" — 48px left-aligned
- **Subheading:** "Media and Entertainment↗"
- **CTAs:** 1 (primary: "Get Started")
- **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:** unknown — Layout not classified
- **Height:** 64px
- **Logo:** ✗ absent
- **Nav links:** 5 primary items
- **CTAs in nav:** 0 (no buttons — links only)
- **Clone instruction:** Build a static unknown navigation. Link-only — no button styling needed.

### Card Grid Pattern

- **Card count:** 4 cards detected
- **Columns (desktop):** 5-up grid
- **Card dimensions:** 294×507px (aspect 0.58:1)
- **Gap:** 16px between cards
- **Content:** ✓ image + CTA
- **Image position:** none
- **Clone instruction:** Build a 5-column grid (desktop) with cards at ~0.58:1 aspect ratio. Each card has an image at the none.

### Footer Pattern

- **Columns:** 1
- **Links:** 45 total
- **Height:** 561px
- **Includes:** ✗ no newsletter | ✓ social icons | ✓ language switcher ✓ copyright
- **Clone instruction:** Build a 1-column footer with ~45 links per column, social media links, and a copyright line.

## 6. Depth & Elevation

| Level | Treatment | Use |
|-------|-----------|-----|
| Flat (Level 0) | No shadow | Page background, content blocks |

**Shadow Philosophy**: Flat design — no shadows used. Borders and spacing define structure.

## 7. Motion & Interaction

### Dominant Easing Curves

| Curve | Semantic Name |
|-------|---------------|
| `cubic-bezier(0.4,0,0.2,1)` | Material Standard — Balanced |
| `linear` | Linear — No Easing |

### Duration Scale

| Value | Tier | Typical Use |
|-------|------|-------------|
| `150ms` | Fast | Hover states, micro-interactions |
| `200ms` | Normal | Panel open/close, navigation |
| `250ms` | Normal | Panel open/close, navigation |
| `500ms` | Slow | Hero animations, page transitions |
| `1s` | Cinematic | Splash, marketing reveals |

### Copy-Paste Transition Snippets

**All Props**
```css
transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
```

**All Props**
```css
transition: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
```

**Opacity**
```css
transition: opacity 0.25s;
```

**All Props**
```css
transition: visibility 1s, opacity 1s;
```

### Keyframe Animation Catalog

| Animation Name | Type | Animated Props | Use Hint |
|----------------|------|----------------|----------|
| `pulse` | Fade | opacity | Attention / status |
| `spin` | Rotate / Spin | transform | Loading indicator |
| `fadeIn` | Fade + Move | opacity, transform | Element entrance |

### Motion Fingerprint

- **Speed Character**: Balanced Pacing (median duration: `250ms`)
- **Dominant Easing**: custom cubic-bezier curves
- **Animation Library**: 3 unique animations (3 total including variants)

> This design moves with balanced pacing timing using custom cubic-bezier curves, creating a UI that feels natural and fluid.

## 8. Do's and Don'ts

### Do
- Use abcNormal as the primary typeface — it defines the brand personality
- Keep font weights between 400-600 — the system uses a narrow weight range for subtle hierarchy
- Use negative letter-spacing (-1.2px) at display sizes for compressed, editorial headlines
- Use 6px border-radius on buttons — the standard corner rounding for interactive elements
- 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
- Make the hero full-viewport (≥70% screen height) — this design uses an immersive hero, not a tall navbar
- Keep the hero centered and text-driven — no decorative media, typography carries the message
- Use a single primary CTA in the hero — the design intentionally avoids choice paralysis
- Each card includes a none image — imagery is part of the card identity, not optional
- Use a 5-column grid on desktop — density matters for this content type

### 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 — 600 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 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
- Don't put a CTA button in the nav — this design uses links only at the top


## 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-depth-001
    type: dont
    rule: "Do NOT introduce drop shadows on cards or sections"
    why: "Containment is achieved via borders, not elevation — adding shadows breaks the depth contract"
    test: "getComputedStyle(card).boxShadow === 'none'"
```

## 9. Responsive Behavior

### Breakpoints
| Name | Width | Key Changes |
|------|-------|-------------|
| Mobile Large | 640px | Expanded mobile layout |
| Tablet | 768px | Multi-column grids begin |
| Tablet | 1024px | Multi-column grids begin |
| Desktop | 1200px | Full feature layout |
| Desktop | 1280px | Full feature layout |
| Large Desktop | 1536px | Maximum content width |

### Token Diff — Desktop vs Mobile

| Element | Property | Desktop | Mobile |
|---------|----------|---------|--------|
| nav | height | `64px` | `0px` |
| button | padding | `4px 8px` | `4px` |
| button | font-size | `14px` | `16px` |
| button | width | `114px` | `24px` |

### Collapsing Strategy
- 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: 4px 8px 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):

- **Card grid: 5-up → 1-up** — cards stack as viewport narrows, becoming a vertical list on 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://runwayml.com/opengraph-image.png?opengraph-image.0bt75ga2._tb4.png (2400×1260px)
  *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: 1.89:1 (landscape (16:9-ish))
- Rendered size: 1408×746px
- *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): 5 (100%)
- Portrait (<0.87): 0 (0%)
- Square (0.87–1.15): 0 (0%)

**Media Format Mix:**
- JPG: 2 (typically photographic content)
- WebP: 1 (optimized photo/illustration hybrid)
- PNG: 2 (logos, transparent UI elements, mockups)

**Average rendered image size:** 522×276px
**Above-fold image count:** 1 / 5

**Decorative Patterns Detected:**
- 2 multi-stop linear gradients (mesh-like, 3+ color stops) — the brand leans on rich color transitions for visual depth
- 7 background patterns (non-photo url() backgrounds) — textures/illustrations as backdrops
- **Glassmorphism** detected (`backdrop-filter: blur`) — layered transparent surfaces with blur, modern OS-like aesthetic

**Clone instruction for decorative work:** Glassmorphism is a brand signature — use `backdrop-filter: blur(20px)` on overlapping surfaces.

**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: Dark Gray (`#404040`)
- Accent: Ring Blue (`#3b82f6`)
- Border: Dark Gray (`#404040`)
- Font: abcNormal
- Body: 16px weight 400

### Example Component Prompts
- "Create a hero section on Pure White background (#ffffff). Headline at 48px abcNormal weight 400, line-height 1, letter-spacing -1.2px, color #404040."
- "Create the primary CTA button: `transparent` background, `#ffffff` text, 4px border-radius, 4px 8px padding, 600 weight, abcNormal font."
- "Build navigation: static on `#ffffff`. abcNormal 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 abcNormal, weight range 400–600. Never exceed 600 — heavier weights break the brand's tonal restraint.
3. **Motion**: All transitions use `cubic-bezier(0.4,0,0.2,1)`. Never use linear for UI transitions — preserve the brand's easing personality.
4. **Shape**: CTAs at `6px`. Apply border-radius from the extracted scale only — don't invent intermediate values.
5. **Spacing**: Use the `--ca-space-*` token scale (4px–32px). All padding, margin, and gap values are multiples from this scale — no magic numbers.
6. **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-background: #ffffff;
  --ca-surface-1: #e5e7eb;
  --ca-surface-2: #eef1f5;
  --ca-hairline: #404040;
  --ca-ink-subtle: #0c0c0c;
}

/* Typography */
:root {
  --ca-font-primary: "abcNormal", system-ui, sans-serif;
  --ca-text-display: 48px;
  --ca-text-body: 16px;
  --ca-text-small: 11px;
  --ca-text-button: 16px;
}

/* Spacing & Radius */
:root {
  --ca-space-xxs: 2px;
  --ca-space-xs: 4px;
  --ca-space-sm: 8px;
  --ca-space-md: 16px;
  --ca-space-base: 24px;
  --ca-space-lg: 24px;
  --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: 12px;
  --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: unknown
    tag: div
    classes: ["flex-1"]
    height: 5636px
    width: full-bleed
    layout: block
    children: 1
  - section: main-content
    tag: main
    height: 5612px
    width: full-bleed
    layout: block
    children: 8
  - section: section-5
    tag: section
    classes: ["bg-white", "pb-6", "relative", "transition-all"]
    height: 834px
    width: full-bleed
    layout: block
    children: 1
    bg: "rgb(255, 255, 255)"
    padding: "0px 0px 24px"
  - section: unknown
    tag: div
    classes: ["!px-0", "lg:!px-4", "w-full", "h-full"]
    height: 810px
    width: full-bleed
    layout: flex-row justify=normal
    children: 1
    padding: "0px 16px"
  - section: unknown
    tag: div
    classes: ["!px-0", "lg:!px-4", "w-full", "h-full"]
    height: 746px
    width: full-bleed
    layout: block
    children: 1
    padding: "0px 16px"
  - section: unknown
    tag: div
    classes: ["absolute", "inset-0", "object-cover", "w-full"]
    height: 746px
    width: 1408px
    layout: grid: 1-col gap=normal
    children: 5
  - section: section-6
    tag: section
    classes: ["mt-12", "lg:mb-32"]
    height: 100px
    width: full-bleed
    layout: block
    children: 1
  - section: unknown
    tag: div
    height: 100px
    width: full-bleed
    layout: block
    children: 1
    padding: "0px 20px"
  - section: section-8
    tag: section
    classes: ["my-12", "lg:my-24"]
    height: 635px
    width: full-bleed
    layout: block
    children: 1
  - section: unknown
    tag: div
    height: 635px
    width: full-bleed
    layout: block
    children: 1
    padding: "0px 20px"
  - section: unknown
    tag: div
    classes: ["h-full", "w-full", "object-cover", "transition-all"]
    height: 297px
    width: 297px
    layout: grid: 1-col gap=normal
    children: 5
  - section: unknown
    tag: div
    classes: ["h-full", "w-full", "object-cover", "transition-all"]
    height: 297px
    width: 297px
    layout: grid: 1-col gap=normal
    children: 5
  - section: section-9
    tag: section
    classes: ["my-20", "lg:my-40"]
    height: 699px
    width: full-bleed
    layout: block
    children: 1
  - section: unknown
    tag: div
    height: 699px
    width: full-bleed
    layout: block
    children: 1
    padding: "0px 20px"
  - section: unknown
    tag: div
    classes: ["w-full", "h-full", "object-cover", "absolute"]
    height: 699px
    width: 1400px
    layout: grid: 1-col gap=normal
    children: 5
  - section: section-10
    tag: section
    classes: ["my-40", "lg:my-44"]
    height: 1202px
    width: full-bleed
    layout: block
    children: 1
  - section: unknown
    tag: div
    height: 1202px
    width: full-bleed
    layout: block
    children: 1
    padding: "0px 20px"
  - section: unknown
    tag: div
    classes: ["!flex", "w-full", "h-full", "object-cover"]
    height: 322px
    width: 573px
    layout: flex-row justify=normal
    children: 5
  - section: unknown
    tag: div
    classes: ["w-full", "h-full", "object-cover", "absolute"]
    height: 322px
    width: 573px
    layout: grid: 1-col gap=normal
    children: 5
  - section: section-11
    tag: section
    height: 595px
    width: full-bleed
    layout: block
    children: 1
  - section: unknown
    tag: div
    height: 595px
    width: full-bleed
    layout: block
    children: 1
    padding: "0px 20px"
  - section: section-12
    tag: section
    classes: ["mt-40", "lg:mt-44", "mb-6"]
    height: 684px
    width: full-bleed
    layout: block
    children: 1
  - section: unknown
    tag: div
    height: 684px
    width: full-bleed
    layout: block
    children: 1
    padding: "0px 20px"
  - section: unknown
    tag: div
    classes: ["w-full", "h-full", "object-cover", "absolute"]
    height: 684px
    width: 1400px
    layout: grid: 1-col gap=normal
    children: 5
  - section: footer
    tag: footer
    height: 561px
    width: full-bleed
    layout: block
    children: 1
```

**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:
    - "Runway Characters"
    - "Gen-4.5: A new frontier for video generation."
  sub-headings:
    - "RUNWAY CHARACTERS
↗"
  ctas:
    - "Enterprise Sales"
    - "Login"
    - "Try Runway"
    - "Get Started"
    - "Learn more"
    - "Try now"
  navigation:
    - "RESEARCH"
    - "PRODUCT"
    - "RESOURCES"
    - "SOLUTIONS"
    - "COMPANY"
    - "Enterprise Sales"
    - "Login"
    - "Try Runway"
  footer-links:
    - "Explore Examples"
    - "TERMS OF USE"
```

**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: 1
    avg-ratio: 1.89
    common-aspect: "~16:9 landscape"
```

**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">
  Enterprise Sales
</button>
```
_Source pattern detected: padding `6px 10px` · radius `6px` · weight `600`_

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


## 12. Known Extraction Gaps

*Auto-detected limitations of this extraction — understand before building:*

- **Sparse component extraction** — fewer than 5 component types detected. Highly dynamic sections (modals, datepickers, carousels) require interaction to render and are not captured in a static pass.


---
## Extraction Completeness: 71/100 (C)

| Category | Score | Max | Detail |
|----------|-------|-----|--------|
| Colors & Palette | 15 | 25 | 11 named colors |
| Typography | 20 | 20 | 8 roles defined |
| Components | 16 | 20 | 4 specs extracted |
| Motion & Interaction | 12 | 15 | Keyframes present |
| CSS Custom Properties | 3 | 10 | 55 vars |
| Responsive Breakpoints | 5 | 5 | 6 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 |
|----------|----------------|-------------------|
| **Dark mode** | No dark-mode CSS variables or media queries detected | Light mode is canonical; do not generate dark-mode variants unless explicitly requested |
| **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 | 55 CSS vars (semantic naming requires ≥20 for high) |
| §3 Typography | High | 8 typography roles inferred |
| §4 Components | Medium | 4 component variants captured |
| §7 Motion | High | Keyframes + transitions |
| §8 Do's/Don'ts | High | 18 rules generated; design-decisions.json has evidence per rule |
| §9 Responsive | High | 6 breakpoints detected |
| §9b Photography | High | 5 images, hero present |

---
*Generated by Clone Architect — automated Playwright extraction + design analysis.*
*Source: https://runwayml.com | 2026-05-30T20:39:48.857Z*
*All values verified via getComputedStyle() — no approximation, no hallucination.*