mongodb.com

DESIGN.md

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

---
version: alpha
name: mongodb.com
description: "Dark-canvas product system built on #061621 with #00684a as the single brand accent. Type anchored in Akzidenz-Grotesk Std at 64px / weight 400. Extracted automatically from https://mongodb.com/ — every value from getComputedStyle(), no approximation."
narrative: |
  mongodb.com is built on a near-black canvas (rgb(6, 22, 33)).
  The system uses rgb(0, 104, 74) as the accent for primary actions and brand signals.
  Crisp CTAs (4px radius) reinforce a precise, technical aesthetic alongside Times New Roman as the primary typeface.

colors:
  canvas: "#061621"
  surface-1: "#001e2b"
  surface-2: "#21313c"
  ink: "#ffffff"
  ink-muted: "#ffffff"
  ink-subtle: "#b8c4c2"
  primary: "#00684a"
  on-primary: "#ffffff"
  primary-hover: "#b1ff05"
  hairline: "#5d6c74"

typography:
  display-xl:
    fontFamily: "MongoDB Value Serif"
    fontSize: 64px
    fontWeight: 400
    lineHeight: 1.13
    letterSpacing: 0
  body:
    fontFamily: "Akzidenz-Grotesk Std"
    fontSize: 16px
    fontWeight: 400
    lineHeight: normal
    letterSpacing: 0
  body-sm:
    fontFamily: "Euclid Circular A"
    fontSize: 14px
    fontWeight: 300
    lineHeight: 2.64
    letterSpacing: 0
  button:
    fontFamily: "Euclid Circular A"
    fontSize: 16px
    fontWeight: 500
    lineHeight: 1
    letterSpacing: 0
  eyebrow:
    fontFamily: "Source Code Pro"
    fontSize: 14px
    fontWeight: 400
    lineHeight: normal
    letterSpacing: 2px
  mono:
    fontFamily: "Akzidenz-Grotesk Std"
    fontSize: 16px
    fontWeight: 300
    lineHeight: 1
    letterSpacing: 0

rounded:
  none: 0px
  xs: 4px
  sm: 8px
  md: 16px
  lg: 16px
  xl: 30px
  pill: 999px

spacing:
  xxs: 2px
  xs: 6px
  sm: 15px
  md: 48px
  lg: 24px
  xl: 32px
  xxl: 64px
  section: 80px

components:
  button-light--invert:
    backgroundColor: "{colors.on-primary}"
    textColor: "#3d4f58"
    typography: "{typography.body-sm}"
    rounded: "{rounded.xs}"
    padding: 1px 6px 1px 0px
  button-dark--solid:
    backgroundColor: "{colors.surface-1}"
    textColor: "{colors.on-primary}"
    typography: "{typography.body}"
    rounded: "{rounded.xs}"
    padding: 14px
  button-ghost:
    backgroundColor: "transparent"
    textColor: "{colors.surface-2}"
    typography: "{typography.body}"
    rounded: "{rounded.none}"
  card-standard-card:
    backgroundColor: "{colors.canvas}"
    typography: "{typography.body}"
    rounded: "{rounded.md}"
  input-text-input:
    backgroundColor: "{colors.on-primary}"
    textColor: "{colors.surface-2}"
    typography: "{typography.body}"
    rounded: "{rounded.xs}"
    padding: 15px
  navigation-main-nav:
    backgroundColor: "transparent"
    typography: "{typography.body}"
    rounded: "{rounded.none}"
  search-bar-search-bar:
    backgroundColor: "transparent"
    textColor: "#000000"
    typography: "{typography.body}"
    rounded: "{rounded.none}"
    padding: 0px 24px 0px 16px
  cta-banner-full-width-cta:
    backgroundColor: "#00ed64"
    textColor: "{colors.surface-1}"
    typography: "{typography.body}"
    rounded: "{rounded.xs}"
  tab-pill-tab:
    backgroundColor: "{colors.on-primary}"
    textColor: "{colors.on-primary}"
    typography: "{typography.body-sm}"
    rounded: "{rounded.sm}"
    padding: 2px
  tab-ghost-tab:
    backgroundColor: "transparent"
    textColor: "{colors.on-primary}"
    typography: "{typography.body-sm}"
    rounded: "{rounded.sm}"
    padding: 7px 20px

extracted_at: "2026-05-30T20:39:29.748Z"
completeness: 84
scoreVersion: "v2"

---

# Design System — mongodb.com
> Extracted automatically by Clone Architect from https://mongodb.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(6, 22, 33)` is the page background. Every component composits against this.
> - **Accent**: `rgb(0, 104, 74)` 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.
>
> **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

mongodb.com commits fully to dark-mode as the native medium, not as a toggled alternative. The canvas is a dark surface (`#061621`) where elevation is communicated through subtle white-opacity gradations rather than traditional shadows — semi-transparent white borders act as the primary depth indicator, like wireframes etched in moonlight. 

Typography is anchored in **Akzidenz-Grotesk Std**. Headlines run at a remarkably light weight (400) — restraint over assertion, creating an editorial calm that invites reading rather than demanding it. 

Body text reads in Pure White (`#ffffff`) (contrast ratio 13.8:1, well above WCAG AA). **#00684a** (`#00684a`) is the single high-saturation color in the system — it earns its presence only on interactive elements, making CTAs and links the unmistakable focal points against the otherwise neutral palette. Elevation is built from multi-layer shadow stacks — each level combines several blurred layers at varying offsets to simulate the way light actually falls on stacked surfaces, not the simulated drop-shadow of cheap interfaces. 
Border radius varies from pill-shaped (fully rounded) to moderately rounded elements, creating visual rhythm. Motion design uses smooth easing curves for polished state transitions. 

**Key Characteristics:**
- Background: Deep Navy (`#061621`)
- Primary typeface: Akzidenz-Grotesk Std
- Primary text: #b1ff05 (`#b1ff05`)
- Accent: #00684a (`#00684a`)
- Display: 64px weight 400
- Shadow system: 6 distinct elevation levels
- Custom fonts loaded: Akzidenz-Grotesk Std, Euclid Circular A, MongoDB Value Serif, Source Code Pro

## 2. Color Palette & Roles

### Background & Surface
- **Deep Navy** (`#061621`): Page background (primary)
- **Pure Black** (`#000000`): Surface / elevated background
- **#0000ee** (`#0000ee`): Surface / elevated background
- **#00684a** (`#00684a`): Surface / elevated background
- **Deep Navy** (`#001e2b`): Surface / elevated background

### Text & Content
- **Pure Black** (`#000000`): Primary body text
- **#b1ff05** (`#b1ff05`): Secondary text
- **Silver** (`#b8c4c2`): Secondary text
- **#00ed64** (`#00ed64`): Secondary text
- **Medium Gray** (`#889397`): Secondary text

### Accent & Interactive
- **Charcoal** (`#21313c`): Interactive / accent
- **Slate** (`#3d4f58`): Interactive / accent
- **#006cfa** (`#006cfa`): Interactive / accent
- **Dim Gray** (`#5d6c74`): Interactive / accent
- **Sky Bright** (`#009ffd`): Interactive / accent
- **Charcoal** (`#1c2d38`): Interactive / accent
- **Dim Gray** (`#5c6c75`): Interactive / accent

### Full Extracted Palette
42 distinct colors detected on the live page (16 categorized above + 26 additional below). Every value is a real `getComputedStyle()` color — no approximation.

- `#ffffff` — Pure White
- `#e9ff99` — #e9ff99
- `#e7eeec` — Light Gray
- `#e8edeb` — Light Gray
- `#c1c7c6` — Silver
- `#0498ec` — Sky Bright
- `rgba(245, 247, 250, 0.03)` — Translucent Ghost White (3%)
- `#014e3d` — #014e3d
- `#e3fcf7` — Light Gray
- `#00ff00` — #00ff00
- `#f3461f` — Vermillion
- `#ffe212` — Gold
- `#00aa57` — #00aa57
- `#d38ff0` — Plum
- `#53e9f6` — #53e9f6
- `#9fa1a2` — Cool Gray
- `#0d427c` — #0d427c
- `#01ec64` — #01ec64
- `#b55df4` — #b55df4
- `#b760f5` — #b760f5
- `#b55cf3` — #b55cf3
- `#00d2ff` — #00d2ff
- `#0066ff` — #0066ff
- `#767676` — Stone
- `#023430` — Navy Blue
- `rgba(59, 130, 246, 0.5)` — Translucent Ring Blue (50%)

### CSS Custom Properties (Design Tokens)

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

**Spacing Token**
- `--tw-numeric-spacing`: ``
- `--tw-border-spacing-x`: `0`
- `--slider-padding`: `48px 0 104px 0`
- `--tw-border-spacing-y`: `0`

**Other tokens**
- `--tw-ring-color`: `rgba(59,130,246,.5)`
- `--tw-ring-offset-color`: `#fff`

## 3. Typography Rules

### Font Families
- **Primary**: `MongoDB Value Serif`
- **Secondary**: `Akzidenz-Grotesk Std`
- **Font 3**: `Noto Sans SC`
- **Font 4**: `Noto Sans KR`
- **Font 5**: `Noto Sans JP`

### Custom Fonts Loaded
- **Akzidenz-Grotesk Std** weight 300 (normal)
- **Akzidenz-Grotesk Std** weight 500 (normal)
- **Noto Sans SC** weight 100 (normal)
- **Noto Sans SC** weight 200 (normal)
- **Noto Sans SC** weight 300 (normal)
- **Noto Sans SC** weight 400 (normal)
- **Noto Sans SC** weight 500 (normal)
- **Noto Sans SC** weight 600 (normal)
- **Noto Sans SC** weight 700 (normal)
- **Noto Sans SC** weight 800 (normal)
- **Noto Sans SC** weight 900 (normal)
- **Noto Sans KR** weight 100 (normal)
- **Noto Sans KR** weight 200 (normal)
- **Noto Sans KR** weight 300 (normal)
- **Noto Sans KR** weight 400 (normal)
- **Noto Sans KR** weight 500 (normal)
- **Noto Sans KR** weight 600 (normal)
- **Noto Sans KR** weight 700 (normal)
- **Noto Sans KR** weight 800 (normal)
- **Noto Sans KR** weight 900 (normal)
- **Noto Sans JP** weight 100 (normal)
- **Noto Sans JP** weight 200 (normal)
- **Noto Sans JP** weight 300 (normal)
- **Noto Sans JP** weight 400 (normal)
- **Noto Sans JP** weight 500 (normal)
- **Noto Sans JP** weight 600 (normal)
- **Noto Sans JP** weight 700 (normal)
- **Noto Sans JP** weight 800 (normal)
- **Noto Sans JP** weight 900 (normal)
- **Euclid Circular A** weight normal (normal)
- **Euclid Circular A** weight 500 (normal)
- **MongoDB Value Serif** weight normal (normal)
- **MongoDB Value Serif** weight 500 (normal)
- **MongoDB Value Serif** weight bold (normal)
- **Source Code Pro** weight normal (normal)
- **Source Code Pro** weight 500 (normal)

### Typography Hierarchy

| Role | Font | Size | Weight | Line Height | Letter Spacing | Notes |
|------|------|------|--------|-------------|----------------|-------|
| Display Hero | MongoDB Value Serif | 64px | 400 | 1.13 | normal | Main headline (h1) |
| Card Title | Akzidenz-Grotesk Std | 16px | 400 | normal | normal | Card headings |
| Button Large | Euclid Circular A | 16px | 500 | 1 | normal | Button label (16px) |
| Button Large | Euclid Circular A | 16px | 300 | 2 | normal | Button label (16px) |
| Input Large | Akzidenz-Grotesk Std | 16px | 300 | 1 | normal | Form input (16px) |
| Input Large | Euclid Circular A | 16px | 400 | 1.25 | normal | Form input (16px) |
| Link | Euclid Circular A | 14px | 300 | 2.64 | normal | Link (14px) — Decoration: underline |
| Eyebrow / Overline | Source Code Pro | 14px | 400 | normal | 2px | Label above heading, uppercase tag |
| Button | Akzidenz-Grotesk Std | 13.3333px | 300 | normal | normal | Button label (13.3333px) |
| Button | Akzidenz-Grotesk Std | 13.3333px | 400 | normal | normal | Button label (13.3333px) |
| Nav Link | Euclid Circular A | 12px | 500 | 1 | normal | Navigation anchor |

### Full Font Size Scale

Sizes detected in the design (descending): `64px`, `40px`, `36px`, `28px`, `24px`, `20px`, `18px`, `16px`, `14px`, `13.33px`, `12px`, `11px`, `9px`

> 8 size(s) detected outside the sampled hierarchy (40px, 36px, 28px, 24px, 20px, 18px, 11px, 9px). These appear on elements not in the sampled set — likely additional display sizes, marketing-section overrides, or third-party-widget styles.

### OpenType & Variable Font Features

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

- **ligatures** — common letter pairs replaced with refined glyphs (fi, fl, etc.)

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

## 4. Component Stylings

### Buttons

**Light / Invert**
- Background: `#ffffff` `{colors.on-primary}`
- Text: `#3d4f58`
- Padding: 1px 6px 1px 0px
- Radius: 4px
- Border: 1px solid rgb(184, 196, 194)
- Font: 13.3333px weight 300
- Use: Bright CTA on dark sections

**Dark / Solid**
- Background: `#001e2b` `{colors.surface-1}`
- Text: `#ffffff` `{colors.on-primary}`
- Padding: 14px
- Radius: 4px
- Border: 1px solid rgb(255, 255, 255)
- Font: 16px weight 500
- Use: Solid dark CTA

**Ghost**
- Background: `transparent`
- Text: `#21313c` `{colors.surface-2}`
- Padding: 0px
- Radius: 0px
- Font: 16px weight 300
- Use: Subtle action, toolbar, nav button

**Ghost**
- Background: `transparent`
- Text: `#000000`
- Padding: 0px
- Radius: 0px
- Font: 13.3333px weight 400
- Use: Subtle action, toolbar, nav button

**Primary Brand**
- Background: `#00ed64`
- Text: `#001e2b` `{colors.surface-1}`
- Padding: 15px 24px
- Radius: 4px
- Border: 1px solid rgb(0, 30, 43)
- Font: 16px weight 500
- Use: Primary CTA / brand action

**Primary Brand**
- Background: `#00684a` `{colors.primary}`
- Text: `#00684a` `{colors.primary}`
- Padding: 8px 48px
- Radius: 0px
- Font: 16px weight 400
- Use: Primary CTA / brand action

### Cards & Containers

**Standard Card**
- Background: `#061621` `{colors.canvas}`
- Padding: 0px
- Radius: 16px
- Shadow: `rgba(0, 0, 0, 0.13) 0px 7px 12px 0px`
- Use: Content containers, listing items

### Inputs & Forms

**Text Input**
- Background: `#ffffff` `{colors.on-primary}`
- Text: `#21313c` `{colors.surface-2}`
- Padding: 15px
- Radius: 4px
- Border: 1px solid rgb(184, 196, 194)
- Font: 16px weight 300
- Use: Text fields, search inputs

### Navigation

**Main Nav**
- Background: `transparent`
- Padding: 0px
- Radius: none
- Font: 16px weight 400
- Use: Fixed/sticky block nav — N/A items

### Search Bar

**Search Bar**
- Background: `transparent`
- Text: `#000000`
- Padding: 0px 24px 0px 16px
- Radius: 0px
- Font: 16px weight 300
- Use: Inline search form

### CTA Banners

**Full-width CTA**
- Background: `#00ed64`
- Text: `#001e2b` `{colors.surface-1}`
- Padding: 0px
- Radius: 4px
- Font: 16px weight 500
- Use: Full-width conversion strip with headline + button

### Tabs

**Pill Tab**
- Background: `rgba(255, 255, 255, 0.4)` `{colors.on-primary}`
- Text: `#ffffff` `{colors.on-primary}`
- Padding: 2px
- Radius: 10px
- Border: 1px solid rgba(255, 255, 255, 0.3)
- Font: 14px weight 400
- Use: Navigation tabs, filter tabs

**Ghost Tab**
- Background: `transparent`
- Text: `#ffffff` `{colors.on-primary}`
- Padding: 7px 20px
- Radius: 8px 0px 0px 8px
- Font: 14px weight 500
- Use: Navigation tabs, filter tabs


## 4b. Component Behaviors (State Matrix)

### Interaction State Narrative


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

```yaml
component-behaviors:
  button:
    default:
      bg: "rgb(255, 255, 255)"
      fg: "rgb(61, 79, 88)"
      border: "1px solid rgb(184, 196, 194)"
  input:
    default:
      bg: "rgb(255, 255, 255)"
      fg: "rgb(33, 49, 60)"
      border: "1px solid rgb(184, 196, 194)"
  link:
    default:
      bg: "rgba(0, 0, 0, 0)"
      fg: "rgb(0, 0, 238)"
  card:
    default:
      bg: "rgb(6, 22, 33)"
      fg: "rgb(255, 255, 255)"
      shadow: "rgba(0, 0, 0, 0.13) 0px 7px 12px 0px"
  navLink:
    default:
      bg: "rgba(0, 0, 0, 0)"
      fg: "rgb(0, 0, 238)"
  tab:
    default:
      bg: "rgba(0, 0, 0, 0)"
      fg: "rgb(255, 255, 255)"
  footerLink:
    default:
      bg: "rgba(0, 0, 0, 0)"
      fg: "rgb(0, 0, 238)"
```

**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
- **6 shape(s)** in this system: `Light / Invert`, `Dark / Solid`, `Ghost`, `Ghost`, `Primary Brand`
- **DO NOT introduce new buttons variants** without justification

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

### Inputs & Forms
- **1 shape(s)** in this system: `Text Input`
- **DO NOT introduce new inputs & forms variants** without justification

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

### Search Bar
- **1 shape(s)** in this system: `Search Bar`
- **DO NOT introduce new search bar variants** without justification

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

### Tabs
- **2 shape(s)** in this system: `Pill Tab`, `Ghost Tab`
- **DO NOT introduce new tabs 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 | 6px |
| sm | 15px |
| md | 48px |
| base | 16px |
| 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 | 16px | Cards, containers |
| Lg | 16px | Large rounded elements, pill segments |
| Xl | 30px | Category strips, featured containers |
| Full | 999px | Pills, avatars, circular elements |

### Shape Language

| Component | Border Radius |
|-----------|---------------|
| Buttons | `4px` |
| Cards & Containers | `16px` |
| Inputs & Forms | `4px` |
| Navigation | `none` |
| Search Bar | `0px` |
| CTA Banners | `4px` |
| Tabs | `10px` |
| Page Body | `0px` |
| Primary Input | `4px` |

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

**Full Radius Spectrum**: 0px, 2px, 4px, 8px, 10px, 16px, 24px, 25px (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** | `48px` | Card padding, list-item spacing |
| **compact** | `15px` | Form fields, tight clusters, badge padding |
| **micro** | `6px` | 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:** 144px tall (not full-viewport)
- **Heading:** "One data platform.Unlimited AI potential." — 64px center-aligned
- **CTAs:** none detected in hero (unusual — agent should verify)
- **Clone instruction:** Reproduce the **centered** layout. Use the heading font-size token at the documented size. No imagery needed for hero — text-driven.

### Navigation Pattern

- **Position:** static (scrolls with page)
- **Layout:** unknown — Layout not classified
- **Height:** 95px
- **Logo:** ✓ present
- **Nav links:** 4 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:** 13 cards detected
- **Columns (desktop):** 1-up grid
- **Card dimensions:** 1440×760px (aspect 1.9:1)
- **Gap:** 638px between cards
- **Content:** ✓ image + CTA
- **Image position:** top
- **Clone instruction:** Build a 1-column grid (desktop) with cards at ~1.9:1 aspect ratio. Each card has an image at the top.

### Footer Pattern

- **Columns:** 1
- **Links:** 26 total
- **Height:** 620px
- **Includes:** ✗ no newsletter | ✓ social icons | ✓ language switcher ✓ copyright
- **Clone instruction:** Build a 1-column footer with ~26 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 |
| Layered (Level 1) | <br>`rgba(0, 0, 0, 0.15) 0px 3px 9px 0px` | Cards, elevated surfaces |
| Layered (Level 2) | <br>`rgba(0, 0, 0, 0.15) 0px 3px 20px 0px` | Cards, elevated surfaces |
| Layered (Level 3) | <br>`rgba(0, 0, 0, 0.13) 0px 7px 12px 0px` | Cards, elevated surfaces |
| Layered (Level 4) | <br>`rgba(0, 0, 0, 0) 0px 0px 0px 0px`,<br>`rgba(0, 0, 0, 0) 0px 0px 0px 0px`,<br>`rgba(0, 0, 0, 0.15) 0px 3px 9px 0px` | Cards, elevated surfaces |

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

## 7. Motion & Interaction

### Dominant Easing Curves

| Curve | Semantic Name |
|-------|---------------|
| `ease` | CSS ease — Default |
| `ease-in` | Ease In — Accelerating |
| `ease-in-out` | Ease In-Out — Symmetric |

### Duration Scale

| Value | Tier | Typical Use |
|-------|------|-------------|
| `150ms` | Fast | Hover states, micro-interactions |
| `200ms` | Normal | Panel open/close, navigation |
| `250ms` | Normal | Panel open/close, navigation |
| `300ms` | Normal | Panel open/close, navigation |
| `850ms` | Cinematic | Splash, marketing reveals |

### Copy-Paste Transition Snippets

**Opacity**
```css
transition: opacity 0.3s;
```

**All Props**
```css
transition: 0.85s ease-in-out;
```

**Background**
```css
transition: background-color 0.3s;
```

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

### Keyframe Animation Catalog

| Animation Name | Type | Animated Props | Use Hint |
|----------------|------|----------------|----------|
| `animation-1relhzy` | Rotate / Spin | transform | UI transition |
| `animation-bkodse` | Custom | content | UI transition |
| `fadeUp` | Fade + Move | opacity, transform | UI transition |
| `fadeIn` | Fade | opacity | Element entrance |
| `shimmer` | Custom | background-position-x, background-position-y | Loading placeholder |
| `fadeInLeft` | Fade + Move | opacity, transform | Element entrance |
| `fadeInRight` | Fade + Move | opacity, transform | Element entrance |
| `fadeInAnimation` | Fade | opacity | Element entrance |
| `fade-in-down` | Fade + Move | opacity, transform | Element entrance |
| `fade-in-up` | Fade + Move | opacity, transform | Element entrance |
| `scroll-x` | Slide | transform | UI transition |
| `fade-out` | Fade | opacity | Element exit |
| `fade-in` | Fade | opacity | Element entrance |
| `progress-bar` | Custom | width | UI transition |
| `fade-in-left` | Fade + Move | opacity, transform | Element entrance |
| `fade-in-right` | Fade + Move | opacity, transform | Element entrance |
| `color` | Color Pulse | color | UI transition |
| `runTitle` | Custom | left | UI transition |
| `runLink` | Custom | left | UI transition |
| `animation-1w559i1` | Fade | opacity | UI transition |

> *4 additional animations omitted (repetitive variants). See raw keyframes in `raw-css.json`.*

### Motion Fingerprint

- **Speed Character**: Balanced Pacing (median duration: `250ms`)
- **Dominant Easing**: custom cubic-bezier curves
- **Animation Library**: 24 unique animations (24 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 dark background (`#061621`) as the foundation — this is a dark-mode-native design
- Use Times New Roman as the primary typeface — it defines the brand personality
- Keep font weights between 400-500 — the system uses a narrow weight range for subtle hierarchy
- Use the extracted shadow patterns for elevation — they are tuned to match the brand palette
- Use full-pill radius (9999px) only for specific elements (avatars, pills, toggles)
- Use #00684a (`#00684a`) as the primary accent — it's the brand's signature interactive color
- Use small 4px radius for buttons — this design system uses subtle rounding, not pill shapes
- Use 16px border-radius on cards — consistent with the grid card corners
- Style form inputs with a `1px solid rgb(184, 196, 194)` border — use border-based inputs, not floating labels or underline-only
- Maintain nav height at 95px — consistent vertical space for the navigation bar
- Keep the hero centered and text-driven — no decorative media, typography carries the message
- Each card includes a top image — imagery is part of the card identity, not optional

### Don't
- Don't use light backgrounds — the dark canvas is the native medium
- Don't substitute with generic sans-serif or serif — the custom font carries the brand
- Don't use weight 700 (bold) or above — 500 is the maximum weight in this system
- Don't invent new shadow values — use only the extracted shadow levels
- Don't apply pill radius on rectangular buttons or cards — it's reserved for specific interactive elements
- Don't introduce additional saturated accent colors — the palette is intentionally controlled
- Don't over-round buttons with pill or large radius — the system uses restrained, sharp-ish corners
- Don't remove the input border — the border is the primary affordance indicator for form fields
- 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(6, 22, 33)` as the base canvas"
    why: "Every component is designed to composit against this exact tone"
    test: "document.body.style.backgroundColor === 'rgb(6, 22, 33)'"
  - id: brand-accent-001
    type: do
    rule: "Reserve `rgb(0, 104, 74)` for primary CTAs and brand-mark signals only"
    why: "Single chromatic assertion device — overuse dilutes meaning"
    test: "querySelectorAll('[style*=\"rgb(0, 104, 74)\"]').length <= 3 per fold"
```

## 9. Responsive Behavior

### Breakpoints
| Name | Width | Key Changes |
|------|-------|-------------|
| Mobile | 400px | Single column, compact spacing |
| Mobile | 460px | Single column, compact spacing |
| Mobile Large | 640px | Expanded mobile layout |
| Mobile Large | 767px | Expanded mobile layout |
| Tablet | 1000px | Multi-column grids begin |
| Desktop | 1280px | Full feature layout |
| Large Desktop | 1410px | Maximum content width |

### Token Diff — Desktop vs Mobile

| Element | Property | Desktop | Mobile |
|---------|----------|---------|--------|
| heading | font-size | `64px` | `40px` |
| heading | line-height | `72px` | `56px` |
| nav | height | `95px` | `56px` |

### Collapsing Strategy
- Headlines: 64px → 40px on mobile
- Navigation: horizontal links → hamburger menu on mobile
- Cards: multi-column → stacked vertical on mobile
- Footer: multi-column → stacked single column on mobile

### Touch Targets
- Buttons: 1px 6px 1px 0px padding
- Navigation: adequate spacing between items
- Interactive elements: minimum 44px touch target recommended

### Collapsing Narrative

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

- **Navigation collapses to hamburger** — 4 links visible on desktop, 0 on mobile (the rest hide behind a menu toggle).

## 9b. Visual Tone & Photography

**Tone:** Mixed photography + illustration

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

**Canonical Brand Image (OG):**
- https://images.contentstack.io/v3/assets/blt7151619cb9560896/bltfe3bee7877352896/Meta_Generic.png
  *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: 2.66:1 (ultra-wide cinematic)
- Rendered size: 1060×399px
- *Use this aspect ratio + composition for your clone's hero — mimicking the proportion preserves the visual hierarchy.*

**Aspect Ratio Distribution:**
- Landscape (1.15–2.3): 2 (33%)
- Portrait (<0.87): 0 (0%)
- Square (0.87–1.15): 0 (0%)
- Ultra-wide (>2.3): 4 (67%)

**Media Format Mix:**
- PNG: 5 (logos, transparent UI elements, mockups)
- SVG: 3 (icons, illustrations, decorative geometry)

**Average rendered image size:** 338×151px
**Above-fold image count:** 0 / 6

**Decorative Patterns Detected:**
- 2 multi-stop linear gradients (mesh-like, 3+ color stops) — the brand leans on rich color transitions for visual depth
- 2 large decorative SVG shapes (≥200×200px, non-icon) — likely blob/illustration accents
- 2 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: Deep Navy (`#061621`)
- Primary text: Pure White (`#ffffff`)
- Accent: #00684a (`#00684a`)
- Border: Dim Gray (`#5d6c74`)
- Font: Akzidenz-Grotesk Std
- Body: 16px weight 400

### Example Component Prompts
- "Create a hero section on Deep Navy background (#061621). Headline at 64px Akzidenz-Grotesk Std weight 400, line-height 1.13, color #ffffff."
- "Create the primary CTA button: `#00684a` background, `#001e2b` text, 4px border-radius, 15px 24px padding, 500 weight, Akzidenz-Grotesk Std font."
- "Design a card on `#061621` background. Border: none. Radius: 16px. Shadow: use extracted shadow. Padding: 0px."
- "Build navigation: relative on `#061621`. Akzidenz-Grotesk Std 16px weight 400 for links."

### Iteration Guide
1. **Canvas**: Set the dark canvas to Deep Navy (`#061621`) — every component is composited against this exact base.
2. **Typography**: All type in Akzidenz-Grotesk Std, weight range 300–500. Never exceed 500 — heavier weights break the brand's tonal restraint.
3. **Accent**: #00684a (`#00684a`) is the sole interactive color. On hover → #b1ff05 (`#b1ff05`). Use CSS transitions, not opacity/brightness filters.
4. **Shape**: CTAs at `4px`, cards at `16px`. Apply border-radius from the extracted scale only — don't invent intermediate values.
5. **Spacing**: Use the `--ca-space-*` token scale (6px–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-canvas: #061621;
  --ca-surface-1: #001e2b;
  --ca-surface-2: #21313c;
  --ca-on-primary: #ffffff;
  --ca-ink-subtle: #b8c4c2;
  --ca-primary: #00684a;
  --ca-primary-hover: #b1ff05;
  --ca-hairline: #5d6c74;
}

/* Typography */
:root {
  --ca-font-primary: "MongoDB Value Serif", system-ui, sans-serif;
  --ca-text-display: 64px;
  --ca-text-body: 16px;
  --ca-text-small: 14px;
  --ca-text-button: 16px;
  --ca-text-mono: 16px;
}

/* Spacing & Radius */
:root {
  --ca-space-xxs: 2px;
  --ca-space-xs: 6px;
  --ca-space-sm: 15px;
  --ca-space-md: 48px;
  --ca-space-base: 16px;
  --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: 16px;
  --ca-radius-lg: 16px;
  --ca-radius-xl: 30px;
  --ca-radius-full: 999px;
}
```


## 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: ["expReady"]
    height: 5937px
    width: full-bleed
    layout: block
    children: 2
  - section: main-content
    tag: main
    height: 5937px
    width: full-bleed
    layout: block
    children: 5
  - section: navigation
    tag: nav
    height: 95px
    width: full-bleed
    layout: block
    children: 2
  - section: unknown
    tag: div
    classes: ["helper-section-item"]
    height: 173px
    width: 208px
    layout: flex-column justify=center
    children: 3
    padding: "24px 24px 18px"
  - section: unknown
    tag: div
    classes: ["helper-section-item"]
    height: 157px
    width: 208px
    layout: flex-column justify=center
    children: 3
    padding: "24px 24px 18px"
  - section: unknown
    tag: div
    classes: ["helper-section-item"]
    height: 139px
    width: 208px
    layout: flex-column justify=center
    children: 3
    padding: "24px 24px 18px"
  - section: hero
    tag: div
    classes: ["p13n-hp-hero"]
    height: 1383px
    width: full-bleed
    layout: block
    children: 1
    bg: "rgb(6, 22, 33)"
    padding: "40px"
  - section: hero
    tag: div
    classes: ["hero-bg"]
    height: 1383px
    width: full-bleed
    layout: block
    children: 1
  - section: unknown
    tag: div
    classes: ["helper-section-item"]
    height: 139px
    width: 208px
    layout: flex-column justify=center
    children: 3
    padding: "24px"
  - section: hero
    tag: div
    height: 520px
    width: 1360px
    layout: flex-column justify=normal
    children: 2
  - section: unknown
    tag: div
    classes: ["helper-section-item"]
    height: 157px
    width: 208px
    layout: flex-column justify=center
    children: 3
    padding: "24px 24px 18px"
  - section: unknown
    tag: div
    classes: ["helper-section-item"]
    height: 173px
    width: 208px
    layout: flex-column justify=center
    children: 3
    padding: "24px 24px 18px"
  - section: hero
    tag: div
    classes: ["hero-animate", "is-enter"]
    height: 484px
    width: 669px
    layout: flex-column justify=normal
    children: 4
  - section: unknown
    tag: div
    classes: ["helper-section-item"]
    height: 157px
    width: 208px
    layout: flex-column justify=center
    children: 3
    padding: "24px"
  - section: unknown
    tag: div
    classes: ["helper-section-item"]
    height: 173px
    width: 208px
    layout: flex-column justify=center
    children: 3
    padding: "24px"
  - section: hero
    tag: div
    classes: ["hero-description"]
    height: 120px
    width: 581px
    layout: block
    children: 1
  - section: unknown
    tag: div
    height: 469px
    width: 1360px
    layout: block
    children: 1
  - section: unknown
    tag: div
    classes: ["spotlight-content-wrapper"]
    height: 399px
    width: 1060px
    layout: flex-row justify=center
    children: 1
  - section: unknown
    tag: div
    classes: ["spotlight-rive-wrapper"]
    height: 399px
    width: 1060px
    layout: block
    children: 2
  - section: unknown
    tag: div
    height: 843px
    width: full-bleed
    layout: block
    children: 2
  - section: unknown
    tag: div
    height: 843px
    width: full-bleed
    layout: block
    children: 1
    bg: "rgb(0, 30, 43)"
    padding: "80px 0px 55px"
  - section: unknown
    tag: div
    classes: ["ddp-section-bg"]
    height: 708px
    width: full-bleed
    layout: block
    children: 1
  - section: unknown
    tag: div
    height: 708px
    width: full-bleed
    layout: block
    children: 1
    bg: "rgb(0, 30, 43)"
    padding: "0px 48px"
  - section: unknown
    tag: div
    classes: ["ddp-section-inner"]
    height: 708px
    width: 1344px
    layout: grid: 12-col gap=normal
    children: 1
  - section: unknown
    tag: div
    classes: ["ddp-experiment-wrapper"]
    height: 576px
    width: 1344px
    layout: flex-row justify=normal
    children: 3
    padding: "56px 0px 0px"
```

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


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

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

```yaml
copy:
  section-headings:
    - "Loved by builders, trusted by enterprises"
    - "Deploy Your Way"
    - "MongoDB Atlas"
    - "MongoDB Community Edition"
    - "MongoDB Enterprise Advanced"
  ctas:
    - "Products"
    - "Eng"
    - "Get Started"
    - "Builder"
    - "Business Leader"
    - "MongoDB 8.3: Now with the best price-performance"
  navigation:
    - "Pricing"
    - "Support"
    - "Sign In"
    - "Get Started"
  footer-links:
    - "Careers"
```

**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:
  logo:
    count: 14
    avg-ratio: 3.70
    common-aspect: "~16:6 banner"
    sample-alts:
      - "MongoDB logo"
  hero:
    count: 1
    avg-ratio: 2.66
    common-aspect: "~16:6 banner"
  thumbnail:
    count: 19
    avg-ratio: 1.00
    common-aspect: "~1:1 square"
    sample-alts:
      - "search icon"
      - "atlas_product_family"
      - "atlas_database"
  icon:
    count: 5
    avg-ratio: 0.65
    common-aspect: "~9:16 portrait"
    sample-alts:
      - "general_action_read"
```

**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">
  Action
</button>
```
_Source pattern detected: padding `1px 6px 1px 0px` · radius `4px` · weight `300`_

### Generic Card
```html
<div class="card">
  <!-- content -->
</div>
```
_Source pattern detected: padding `0px` · radius `16px` · shadow `rgba(0, 0, 0, 0.13) 0px 7px 12px 0px`_

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


---
## Extraction Completeness: 84/100 (B)

| Category | Score | Max | Detail |
|----------|-------|-----|--------|
| Colors & Palette | 24 | 25 | 17 named colors |
| Typography | 20 | 20 | 11 roles defined |
| Components | 20 | 20 | 7 specs extracted |
| Motion & Interaction | 12 | 15 | Keyframes present |
| CSS Custom Properties | 3 | 10 | 66 vars |
| Responsive Breakpoints | 5 | 5 | 7 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 |

### Per-section confidence

| Section | Confidence | Reason |
|---------|------------|--------|
| §1 Visual Theme | High | Body bg extracted via getComputedStyle() |
| §2 Colors | High | 66 CSS vars (semantic naming requires ≥20 for high) |
| §3 Typography | High | 11 typography roles inferred |
| §4 Components | High | 7 component variants captured |
| §7 Motion | High | Keyframes + transitions |
| §8 Do's/Don'ts | High | 24 rules generated; design-decisions.json has evidence per rule |
| §9 Responsive | High | 7 breakpoints detected |
| §9b Photography | High | 6 images, hero present |

---
*Generated by Clone Architect — automated Playwright extraction + design analysis.*
*Source: https://mongodb.com | 2026-05-30T20:39:29.757Z*
*All values verified via getComputedStyle() — no approximation, no hallucination.*