upstash.com

DESIGN.md

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

---
version: alpha
name: upstash.com
description: "Light product system built on #f5f5f5 with #00bc7d as the primary CTA accent. Type anchored in __Inter_Tight_a3c0d3 at 128px / weight 700. Extracted automatically from https://upstash.com/ — rendered styles via getComputedStyle() + CSS custom properties (token-only values may not be painted)."
narrative: |
  upstash.com is built on a mid-dark canvas (oklch(0.97 0 0)).
  The system uses rgb(0, 188, 125) as the high-saturation accent for primary actions.
  Sharp 0px corners on CTAs — architectural restraint, engineering precision alongside __Inter_Tight_a3c0d3 as the primary typeface.
  __Inter_Tight_a3c0d3 is paired with __Inter_Fallback_f367f3 for secondary roles.
  A layered elevation system (7 distinct shadows) building a clear front-to-back hierarchy.
  Motion is a first-class concern — 6 keyframe animations plus transition-driven interactions.

colors:
  background: "#f5f5f5"
  surface-1: "#ffffff"
  surface-2: "rgba(255, 255, 255, 0.6)"
  ink: "#022c22"
  ink-muted: "rgba(2, 44, 34, 0.65)"
  ink-subtle: "#022c22"
  primary: "#00bc7d"
  on-primary: "#111111"
  primary-hover: "#6ee7b7"
  hairline: "#e4e4e7"
  primary-focus: "#101010"

typography:
  display-xl:
    fontFamily: "intercom-font, 'SF Pro Display', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif"
    fontSize: 128px
    fontWeight: 700
    lineHeight: 1
    letterSpacing: -3.2px
  display-md:
    fontFamily: "intercom-font, 'SF Pro Display', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif"
    fontSize: 48px
    fontWeight: 600
    lineHeight: 1
    letterSpacing: 0
  headline:
    fontFamily: "intercom-font, 'SF Pro Display', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif"
    fontSize: 180px
    fontWeight: 700
    lineHeight: 1.25
    letterSpacing: 0
  body:
    fontFamily: "intercom-font, 'SF Pro Display', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif"
    fontSize: 14px
    fontWeight: 400
    lineHeight: 1.43
    letterSpacing: 0
  button:
    fontFamily: "intercom-font, 'SF Pro Display', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif"
    fontSize: 16px
    fontWeight: 500
    lineHeight: 1.5
    letterSpacing: 0

rounded:
  none: 0px
  xs: 6px
  sm: 8px
  md: 12px
  lg: 16px
  xl: 35px
  pill: 9999px

spacing:
  xxs: 2px
  xs: 6px
  sm: 8px
  md: 16px
  lg: 64px
  xl: 80px
  xxl: 112px

components:
  button-pill:
    backgroundColor: "transparent"
    textColor: "#71717b"
    typography: "{typography.button}"
    rounded: "{rounded.pill}"
    padding: 8px 12px
  button-pill-2:
    backgroundColor: "transparent"
    textColor: "#71717b"
    typography: "{typography.button}"
    rounded: "{rounded.pill}"
    padding: 8px 16px
  button-primary-brand:
    backgroundColor: "{colors.primary}"
    textColor: "{colors.surface-2}"
    typography: "{typography.button}"
    rounded: "{rounded.md}"
    padding: 8px 32px
  card-standard-card:
    backgroundColor: "#047857"
    typography: "{typography.button}"
    rounded: "{rounded.lg}"
    padding: 32px

extracted_at: "2026-06-11T06:19:37.141Z"
completeness: 69
scoreVersion: "v2"

---

# Design System — upstash.com
> Extracted automatically by Prism from https://upstash.com
> Date: 2026-06-11
> Viewport: Desktop 1440x900 + Mobile 390x844
> Values are extracted, not hand-written: rendered styles via getComputedStyle() + colors declared in CSS custom properties (token-only values are marked `(token)` and may not be painted).


## 0. Design DNA

**Density**: sparse  |  **Motion**: subtle  |  **Weight**: heavy  |  **Aesthetic**: product-neutral

| Dimension | Value | Signal |
|---|---|---|
| Canvas | neutral | `#ffffff` |
| Type posture | sans-led (__Inter_f367f3) | "Serverless Data Platform" |
| Color assertion | dual-accent | #00bc7d |
| Whitespace | sparse | section rhythm 96px |
| Interaction | subtle | 6 keyframes, 6 transitions |
| Radius language | 12px-rounded | from token scale |

**Prism fingerprint**: `neutral-canvas · sans-display · dual-accent · 12px-rounded · subtle-motion`

> **🤖 TL;DR for AI agents** (read this first — saves you scanning the full doc):
>
> - **Canvas**: `oklch(0.97 0 0)` is the page background. Every component composits against this.
> - **Accent**: `rgb(0, 188, 125)` for primary CTAs ONLY. Never decorative.
> - **Body type**: 16px (token: `typography.body`). Default for ALL text not in a heading role.
> - **Section rhythm**: 96px between major bands. Card padding: 64px.
> - **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

upstash.com sits on a off-white canvas (`#f5f5f5`), a neutral foundation calibrated for sustained reading and component contrast. 

Headlines are set in **__Inter_Tight_a3c0d3**, a sans-serif display face (the dominant type signature, e.g. "Serverless Data Platform" at 128px). A second display voice — **__Inter_f367f3** (sans) — appears in lower bands (e.g. "The single platform for all your data needs"), used for editorial accent. Body text is set in **__Inter_f367f3**. Headlines use weight 700 for confident, assertive presence — the brand wants to be heard. Negative letter-spacing at display sizes (-3.2px at 128px) compresses headlines into engineered blocks, dense and precise. 

Body text reads in Deep Navy (`#022c22`) — softened from pure black, a small but deliberate detail that lowers reading friction. **Emerald** (`#00bc7d`) 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 (7 distinct) — each combines several blurred layers at varying offsets to build a clear front-to-back hierarchy. 
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: Off-White (`#f5f5f5`)
- Primary typeface: intercom-font
- Primary text: Deep Navy (`#022c22`)
- Accent: Emerald (`#00bc7d`)
- Display: 128px weight 700, letter-spacing -3.2px
- Shadow system: 7 distinct elevation levels
- Custom fonts loaded: intercom-font

## 2. Color Palette & Roles

### Background & Surface
- **Off-White** (`#f5f5f5`): Page background (primary)
- **Whitesmoke** (`#e5e7eb`): Surface / elevated background
- **Whitesmoke** (`#e4e4e7`): Surface / elevated background
- **Pure White** (`#ffffff`): Surface / elevated background
- **Soft Pink** (`#e9d5ff`): Surface / elevated background

### Text & Content
- **Text** (`#022c22`): Primary body text
- **Pure Black** (`#000000`): Secondary text
- **Near-Black** (`#27272a`): Secondary text
- **Charcoal** (`#3d3d3f`): Secondary text
- **Pure Black** (`#09090b`): Secondary text

### Accent & Interactive
- **Bg Mute** (`rgba(4, 120, 87, 0.08)`): Accent / interactive (CSS var)
- **#6ee7b7** (`#6ee7b7`): Interactive / accent
- **Emerald** (`#10b981`): Interactive / accent
- **#34d399** (`#34d399`): Interactive / accent
- **M Tricolor Red** (`#dc2626`): Interactive / accent
- **#f97316** (`#f97316`): Interactive / accent
- **M Tricolor Blue** (`#2563eb`): Interactive / accent

### Full Extracted Palette
**23 colors rendered on the page** + **2** more declared in design tokens (CSS custom properties — not necessarily painted). (17 categorized above + 8 additional below.)
Rendered values are read via `getComputedStyle()`; token values come from CSS variable declarations. Third-party logo colors are filtered out.

- `#9333ea` — Violet
- `#065f46` — #065f46
- `#999999` — Grey
- `#f59e0b` — #f59e0b
- `#f6821f` — #f6821f
- `#fbad41` — #fbad41
- `#ff282d` — M Tricolor Red
- `rgba(59, 130, 246, 0.5)` — Translucent Ring Blue (50%) *(token)*

### Gradients & Decorative Fills

- `linear-gradient(to right, oklch(0.508 0.118 165.612), oklch(0.696 0.17 162.48), rgb(245, 158, 11))` — (heading)

### 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`

**Text Color**
- `--color-text-mute`: `oklch(0.552 0.016 285.938)`
- `--color-text`: `#022c22`

**Background**
- `--color-bg`: `oklch(0.97 0 0)`
- `--color-bg-mute`: `rgba(4,120,87,.08)`

**Primary Brand Color**
- `--color-primary`: `oklch(0.696 0.17 162.48)`
- `--color-primary-text`: `oklch(0.508 0.118 165.612)`

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

**Other tokens**
- `--tw-ring-offset-color`: `#fff`
- `--font-sans`: `"__Inter_f367f3","__Inter_Fallback_f367f3"`
- `--font-display`: `"__Inter_Tight_a3c0d3","__Inter_Tight_Fallback_a3c0d3"`
- `--tw-ring-color`: `rgba(59,130,246,.5)`
- `--color-pre-bg`: `#09090b`

## 3. Typography Rules

### Font Families
- **Primary**: `intercom-font`
- **Secondary**: `system-ui`

### Custom Fonts Loaded
- **__Inter_f367f3** weight 100 900 (normal)
- **__Inter_Fallback_f367f3** weight normal (normal)
- **__Inter_Tight_a3c0d3** weight 100 900 (normal)
- **__Inter_Tight_Fallback_a3c0d3** weight normal (normal)
- **__JetBrains_Mono_3c557b** weight 100 800 (normal)
- **__JetBrains_Mono_Fallback_3c557b** weight normal (normal)
- **intercom-font** weight normal (normal)
- **intercom-font** weight bold (normal)

### Typography Hierarchy

| Role | Font | Size | Weight | Line Height | Letter Spacing | Notes |
|------|------|------|--------|-------------|----------------|-------|
| Label Heading | intercom-font | 180px | 700 | 1.25 | normal | Small heading (H5) |
| Display Hero | intercom-font | 128px | 700 | 1 | -3.2px | Main headline (h1) |
| Sub-heading | intercom-font | 48px | 600 | 1 | normal | Third-level heading (h3) |
| Label Heading | intercom-font | 24px | 600 | 1.33 | normal | Small heading (H4) |
| Card Title | intercom-font | 16px | 400 | 1.5 | normal | Card headings |
| Button Large | intercom-font | 16px | 500 | 1.5 | normal | Button label (16px) |
| Button | intercom-font | 14px | 400 | 1.43 | normal | Button label (14px) |

### Full Font Size Scale

Sizes detected in the design (descending): `180px`, `128px`, `48px`, `30px`, `24px`, `21.60px`, `20px`, `18px`, `16px`, `14px`, `13.76px`, `13px`, `12px`

> 7 size(s) detected outside the sampled hierarchy (30px, 21.6px, 20px, 18px, 13.76px, 13px, 12px). 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

**Pill**
- Background: `transparent`
- Text: `#71717b`
- Padding: 8px 12px
- Radius: 9999px
- Font: 16px weight 400
- Use: Status pills, tags, chips
- Focus: outline: `rgb(16, 16, 16) auto 1px`

**Pill**
- Background: `transparent`
- Text: `#71717b`
- Padding: 8px 16px
- Radius: 9999px
- Font: 16px weight 400
- Use: Status pills, tags, chips
- Focus: outline: `rgb(16, 16, 16) auto 1px`

**Primary Brand**
- Background: `#00bc7d` `{colors.primary}`
- Text: `#ffffff` `{colors.surface-2}`
- Padding: 8px 32px
- Radius: 12px
- Font: 16px weight 500
- Use: Primary CTA / brand action
- Focus: outline: `rgb(16, 16, 16) auto 1px`

**Light / Invert**
- Background: `#ffffff` `{colors.surface-2}`
- Text: `#dc2626`
- Padding: 0px 32px
- Radius: 16px 16px 0px 0px
- Font: 24px weight 600
- Use: Bright CTA on dark sections
- Focus: outline: `rgb(16, 16, 16) auto 1px`

**Light / Invert**
- Background: `#f5f5f5` `{colors.background}`
- Text: `#71717b`
- Padding: 0px 32px
- Radius: 16px 16px 0px 0px
- Font: 24px weight 600
- Use: Bright CTA on dark sections
- Focus: outline: `rgb(16, 16, 16) auto 1px`

**Primary Brand**
- Background: `#00bc7d` `{colors.primary}`
- Text: `#ffffff` `{colors.surface-2}`
- Padding: 8px 20px
- Radius: 12px
- Font: 16px weight 500
- Use: Primary CTA / brand action
- Focus: outline: `rgb(16, 16, 16) auto 1px`

### Cards & Containers

**Standard Card**
- Background: `rgba(4, 120, 87, 0.08)`
- Padding: 32px
- Radius: 16px
- Use: Content containers, listing items


## 4b. Component Behaviors (State Matrix)

### Interaction State Narrative

- **Link**:
  - **hover:** text #6ee7b7 → #00bc7d
- **NavLink**:
  - **hover:** text #6ee7b7 → #00bc7d
- **FooterLink**:
  - **hover:** text #71717b → #00bc7d

*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(228, 228, 231)"
    focus:
      bg: "transparent"
      fg: "inherit"
  link:
    default:
      bg: "rgba(0, 0, 0, 0)"
      fg: "rgb(110, 231, 183)"
    hover:
      bg: "transparent"
      fg: "oklch(0.696 0.17 162.48)"
  card:
    default:
      bg: "rgba(4, 120, 87, 0.08)"
      fg: "rgb(2, 44, 34)"
  navLink:
    default:
      bg: "rgba(0, 0, 0, 0)"
      fg: "rgb(110, 231, 183)"
    hover:
      bg: "transparent"
      fg: "oklch(0.696 0.17 162.48)"
  footerLink:
    default:
      bg: "rgba(0, 0, 0, 0)"
      fg: "oklch(0.552 0.016 285.938)"
    hover:
      bg: "transparent"
      fg: "oklch(0.696 0.17 162.48)"
```

**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
- **3 shape(s)** in this system: `Pill`, `Primary Brand`, `Light / Invert`
- **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

## 5. Layout Principles

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

### Grid
Single column, centered content

### Max Width
1200px

### Spacing System
Generous spacing — editorial breathing room

| Token | Value |
|-------|-------|
| xxs | 2px |
| xs | 6px |
| sm | 8px |
| md | 16px |
| base | 32px |
| lg | 64px |
| xl | 80px |
| 2xl | 96px |
| 3xl | 112px |

### Border Radius Scale
| Name | Value | Use |
|------|-------|-----|
| None | 0px | No rounding |
| Xs | 6px | Tiny corners (badges, micro elements) |
| Sm | 8px | Buttons, inputs, small elements |
| Md | 12px | Cards, containers |
| Lg | 16px | Large rounded elements, pill segments |
| Xl | 35px | Category strips, featured containers |
| Full | 9999px | Pills, avatars, circular elements |

### Shape Language

| Component | Border Radius |
|-----------|---------------|
| Buttons | `9999px` |
| Cards & Containers | `16px` |
| Page Body | `0px` |
| Navigation | `0px` |

**Shape Personality**: Sharp + Pill Contrast — Angular precision with pill-shaped accents (status badges, tags). Creates strong visual hierarchy.

**Full Radius Spectrum**: 0px, 6px, 8px, 12px, 16px, 24px, 35px, 35.2px (from `allBorderRadii` scan)


## 5b. Spacing Rhythm Names

**Measured section padding**: bands use ~96px internal vertical padding (up to 112px) — **very airy / premium**. (Distinct from the gap *between* sections above.) Reproduce this generous vertical breathing room; cramped spacing is the #1 tell of a cheap clone.

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

| Name | Value | Use case |
|------|-------|----------|
| **hero** | `112px` | Top/bottom of full-bleed hero sections |
| **section** | `80px` | Between major bands (color change, content shift) |
| **subsection** | `64px` | Within a section, between content groups |
| **card** | `16px` | Card padding, list-item spacing |
| **compact** | `8px` | 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).

**5/8 structural patterns detected.**

### Hero Pattern

- **Composition:** centered — Centered composition — heading + subheading + CTAs stacked vertically, content centered horizontally. Common for SaaS marketing pages.
- **Viewport coverage:** 488px tall (not full-viewport)
- **Heading:** "Serverless Data Platform" — 128px center-aligned
- **Subheading:** "The single platform for all your data needs"
- **CTAs:** 1 (primary: "Start for Free")
- **Clone instruction:** Reproduce the **centered** layout. Use the heading font-size token at the documented size. Pair the centered text with the hero’s decorative visual (gradient / SVG / hero image — see §9b), not bare text.

### Navigation Pattern

- **Position:** static (scrolls with page)
- **Layout:** unknown — Layout not classified
- **Height:** 40px
- **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:** 11 cards detected
- **Columns (desktop):** 1-up grid
- **Card dimensions:** 1200×220px (aspect 5.45:1)
- **Gap:** 0px between cards
- **Content:** ✗ no image + icon
- **Clone instruction:** Build a 1-column grid (desktop) with cards at ~5.45:1 aspect ratio. Text/icon-only cards (no photography).

### Pricing Table Pattern

- **Tier count:** 2 pricing tiers
- **Layout:** vertical stacked
- **Columns (desktop):** 2-up
- **Clone instruction:** Build a 2-column vertical-stack pricing comparison.

### Footer Pattern

- **Columns:** 1
- **Links:** 6 total
- **Height:** 550px
- **Includes:** ✗ no newsletter | ✗ no social |  ✓ copyright
- **Clone instruction:** Build a 1-column footer with ~6 links per column, and a copyright line.

## 6. Depth & Elevation

| Level | Treatment | Use |
|-------|-----------|-----|
| Flat (Level 0) | No shadow | Page background, content blocks |
| Layered (Level 1) | <br>`rgba(0, 0, 0, 0.05) 0px 1px 2px 0px` | Cards, elevated surfaces |
| Layered (Level 2) | <br>`rgba(0, 0, 0, 0.25) 0px 25px 50px -12px` | Cards, elevated surfaces |
| Layered (Level 3) | <br>`rgba(0, 0, 0, 0.1) 0px 1px 3px 0px`,<br>`rgba(0, 0, 0, 0.1) 0px 1px 2px -1px` | Cards, elevated surfaces |
| Layered (Level 4) | <br>`rgba(16, 185, 129, 0.3) 0px 0px 80px 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 |
|-------|---------------|
| `cubic-bezier(0.4,0,0.2,1)` | Material Standard — Balanced |
| `cubic-bezier(0.4,0,1,1)` | Material Accelerate — Exit |

### Duration Scale

| Value | Tier | Typical Use |
|-------|------|-------------|
| `150ms` | Fast | Hover states, micro-interactions |
| `300ms` | Normal | Panel open/close, navigation |

### Copy-Paste Transition Snippets

**Transform**
```css
transition: transform 0.15s cubic-bezier(0.4, 0, 1, 1);
```

**Color / Background**
```css
transition: color 0.15s cubic-bezier(0.4, 0, 0.2, 1), background-color 0.15s cubic-bezier(0.4, 0, 0.2, 1), border-color 0.15s cub...;
```

**Color / Background**
```css
transition: color 0.15s cubic-bezier(0.4, 0, 0.2, 1), background-color 0.15s cubic-bezier(0.4, 0, 0.2, 1), border-color 0.15s cub...;
```

**All Props**
```css
transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
```

### Keyframe Animation Catalog

| Animation Name | Type | Animated Props | Use Hint |
|----------------|------|----------------|----------|
| `headShake` | Rotate / Spin | transform | Error feedback |
| `heartBeat` | Scale | transform | UI transition |
| `pulse` | Fade | opacity | Attention / status |
| `animate-slide` | Slide | transform | UI transition |
| `animate-gradient` | Custom | background-position-x, background-position-y | UI transition |
| `launcherEnter` | Fade + Move | transform, opacity | Element entrance |

### Motion Fingerprint

- **Speed Character**: Deliberate & Calm (median duration: `300ms`)
- **Dominant Easing**: custom cubic-bezier curves
- **Animation Library**: 6 unique animations (6 total including variants)

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

## 8. Do's and Don'ts

### Do
- Use Off-White (`#f5f5f5`) as the page background — it's intentionally not pure white
- Use Text (`#022c22`) for text — not pure black, it's warmer and more readable
- Use negative letter-spacing (-3.2px) at display sizes for compressed, editorial headlines
- 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 Primary (`#00bc7d`) as the primary accent — it's the brand's signature interactive color
- Use 12px border-radius on buttons — the standard corner rounding for interactive elements
- Apply 32px padding inside cards — matches the design system's content breathing room
- Use 16px border-radius on cards — consistent with the grid card corners
- Maintain nav height at 40px — consistent vertical space for the navigation bar
- Respect the 6px–80px spacing range — the design uses a wide scale for visual breathing room
- Use a single primary CTA in the hero — the design intentionally avoids choice paralysis
- Each card uses an icon (not photo) — the visual language is illustrative, not photographic

### Don't
- Don't use pure white (`#ffffff`) as a page background — the warm tone is part of the brand identity
- Don't use pure black (`#000000`) for text — the near-black adds warmth
- Don't increase letter-spacing on headings — the type is designed to run tight at scale
- Don't invent new shadow values — use only the extracted shadow levels
- Don't 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 collapse or hide the nav on scroll without an explicit scroll-triggered animation — the design uses fixed nav presence
- 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
- Don't over-build the footer — this design keeps it minimal (1 cols, 6 links)


## 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 `oklch(0.97 0 0)` as the base canvas"
    why: "Every component is designed to composit against this exact tone"
    test: "document.body.style.backgroundColor === 'oklch(0.97 0 0)'"
  - id: brand-accent-001
    type: do
    rule: "Reserve `rgb(0, 188, 125)` for primary CTAs and brand-mark signals only"
    why: "Single chromatic assertion device — overuse dilutes meaning"
    test: "querySelectorAll('[style*=\"rgb(0, 188, 125)\"]').length <= 3 per fold"
```

## 9. Responsive Behavior

### Breakpoints
| Name | Width | Key Changes |
|------|-------|-------------|
| Mobile | 420px | Single column, compact spacing |
| Mobile Large | 640px | Expanded mobile layout |
| Tablet | 768px | Multi-column grids begin |
| Tablet | 1024px | Multi-column grids begin |
| Desktop | 1280px | Full feature layout |
| Large Desktop | 1536px | Maximum content width |

### Token Diff — Desktop vs Mobile

| Element | Property | Desktop | Mobile |
|---------|----------|---------|--------|
| heading | font-size | `128px` | `48px` |
| heading | line-height | `128px` | `48px` |
| heading | letter-spacing | `-3.2px` | `-1.2px` |
| body | font-size | `16px` | `14px` |
| body | line-height | `24px` | `20px` |
| body | padding | `80px 0px 0px` | `70px 0px 0px` |
| nav | height | `40px` | `auto` |
| button | width | `20px` | `auto` |
| card | padding | `32px` | `24px` |
| card | width | `357.328px` | `342px` |

### Collapsing Strategy
- Headlines: 128px → 48px 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: 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):

*No major structural differences detected between desktop and mobile widgets. The same blueprints scale rather than collapse — verify by inspecting actual mobile render.*


## 7c. Visual Effects & Dynamic Behavior

*The live/dynamic layer beyond static CSS — reproduce these, not flat substitutes. This is often what separates a faithful clone from a wireframe.*

- **Clip-path shapes** — 8 non-rectangular cut(s).

> **Motion fingerprint**: non-rectangular shapes (10)

## 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://upstash.com/og-home.jpg
  *This is the image shown when the site is shared on social media — represents the brand visual essence.*

**Aspect Ratio Distribution:**
- Landscape (1.15–2.3): 0 (0%)
- Portrait (<0.87): 0 (0%)
- Square (0.87–1.15): 1 (100%)

**Media Format Mix:**
- WebP: 1 (optimized photo/illustration hybrid)
- SVG: 1 (icons, illustrations, decorative geometry)

**Average rendered image size:** 1440×1440px
**Above-fold image count:** 0 / 1

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

**Clone instruction for decorative work:** 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: Off-White (`#f5f5f5`)
- Primary text: Deep Navy (`#022c22`)
- Accent: Emerald (`#00bc7d`)
- Border: Whitesmoke (`#e4e4e7`)
- Font: intercom-font
- Body: 16px weight 400

### Example Component Prompts
- "Create a hero section on Off-White background (#f5f5f5). Headline at 128px intercom-font weight 700, line-height 1, letter-spacing -3.2px, color #022c22."
- "Create the primary CTA button: `#00bc7d` background, `#007a55` text, 12px border-radius, 8px 16px padding, 500 weight, intercom-font font."
- "Design a card on `rgba(4, 120, 87, 0.08)` background. Border: none. Radius: 16px. Shadow: none. Padding: 32px."
- "Build navigation: relative on `#f5f5f5`. intercom-font 16px weight 400 for links."

### Iteration Guide
1. **Canvas**: Set the light canvas to Off-White (`#f5f5f5`) — every component is composited against this exact base.
2. **Typography**: All type in intercom-font, weight range 400–700. Never exceed 700 — heavier weights break the brand's tonal restraint.
3. **Accent**: Emerald (`#00bc7d`) is the sole interactive color. On hover → #6ee7b7 (`#6ee7b7`). Use CSS transitions, not opacity/brightness filters.
4. **Motion**: All transitions use `cubic-bezier(0.4,0,1,1)`. Never use linear for UI transitions — preserve the brand's easing personality.
5. **Shape**: CTAs at `0px`, cards at `16px`. Apply border-radius from the extracted scale only — don't invent intermediate values.
6. **Spacing**: Use the `--ca-space-*` token scale (6px–80px). All padding, margin, and gap values are multiples from this scale — no magic numbers.
7. **Tokens**: Import from §11 CSS Export (`--ca-*` vars). Never hardcode hex values — always reference a token so theming remains consistent.

## 11. CSS Design Tokens Raw Export

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

```css
/* Colors */
:root {
  --ca-background: #f5f5f5;
  --ca-surface-2: #ffffff;
  --ca-ink-subtle: #022c22;
  --ca-primary: #00bc7d;
  --ca-on-primary: #111111;
  --ca-primary-hover: #6ee7b7;
  --ca-hairline: #e4e4e7;
  --ca-primary-focus: #101010;
}

/* Typography */
:root {
  --ca-font-primary: "intercom-font", system-ui, sans-serif;
  --ca-text-display: 128px;
  --ca-text-body: 14px;
  --ca-text-button: 16px;
}

/* Spacing & Radius */
:root {
  --ca-space-xxs: 2px;
  --ca-space-xs: 6px;
  --ca-space-sm: 8px;
  --ca-space-md: 16px;
  --ca-space-base: 32px;
  --ca-space-lg: 64px;
  --ca-space-xl: 80px;
  --ca-space-2xl: 96px;
  --ca-space-3xl: 112px;
  --ca-radius-none: 0px;
  --ca-radius-xs: 6px;
  --ca-radius-sm: 8px;
  --ca-radius-md: 12px;
  --ca-radius-lg: 16px;
  --ca-radius-xl: 35px;
  --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: header
    tag: header
    classes: ["fixed", "inset-x-0", "top-0", "z-50"]
    height: 125px
    width: full-bleed
    layout: block
    children: 2
  - section: hero
    tag: main
    classes: ["text-center"]
    height: 4916px
    width: full-bleed
    layout: block
    children: 7
    vertical-padding: ~112px (airy)
  - section: feature-section
    tag: section
    classes: ["relative", "z-0", "py-16"]
    height: 488px
    width: full-bleed
    layout: block
    children: 2
    vertical-padding: ~64px (generous)
    padding: "64px 0px"
  - section: feature-section
    tag: section
    classes: ["relative", "z-10", "sm:mt-4"]
    height: 1024px
    width: full-bleed
    layout: block
    children: 1
  - section: section
    tag: section
    classes: ["relative", "-z-10", "mt-20", "h-[320px]"]
    height: 500px
    width: full-bleed
    layout: block
    children: 6
  - section: feature-section
    tag: section
    classes: ["relative", "z-10", "py-16", "md:mt-20"]
    height: 1192px
    width: full-bleed
    layout: block
    children: 2
    vertical-padding: ~112px (airy)
    padding: "112px 0px"
  - section: header
    tag: header
    classes: ["mx-auto", "max-w-screen-md"]
    height: 88px
    width: 768px
    layout: block
    children: 2
  - section: header
    tag: header
    height: 100px
    width: 524px
    layout: block
    children: 2
  - section: header
    tag: header
    height: 92px
    width: 524px
    layout: block
    children: 2
  - section: header
    tag: header
    height: 92px
    width: 728px
    layout: block
    children: 2
  - section: header
    tag: header
    classes: ["relative", "z-20"]
    height: 92px
    width: 320px
    layout: block
    children: 2
  - section: feature-section
    tag: section
    classes: ["relative", "z-10", "py-8", "md:py-16"]
    height: 888px
    width: full-bleed
    layout: block
    children: 2
    vertical-padding: ~64px (generous)
    padding: "64px 0px"
  - section: header
    tag: header
    classes: ["mx-auto", "max-w-screen-md"]
    height: 120px
    width: 768px
    layout: block
    children: 2
  - section: feature-section
    tag: section
    classes: ["relative", "z-10", "py-8", "md:py-16"]
    height: 600px
    width: full-bleed
    layout: block
    children: 2
    vertical-padding: ~64px (generous)
    padding: "64px 0px"
  - section: header
    tag: header
    classes: ["mx-auto", "max-w-screen-md"]
    height: 88px
    width: 768px
    layout: block
    children: 2
  - section: footer
    tag: footer
    classes: ["relative", "z-20", "py-24", "text-center"]
    height: 550px
    width: full-bleed
    layout: block
    children: 1
    vertical-padding: ~96px (airy)
    padding: "96px 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:
    - "The single platform for all your data needs"
    - "Low-latency, serverless key-value store"
  sub-headings:
    - "Serverless & Edge"
  ctas:
    - "Docs"
    - "Pricing"
    - "Login"
    - "Start for Free"
    - "Redis ®*"
    - "Vector"
    - "Learn more"
    - "Documentation"
  navigation:
    - "Upstash"
    - "Terms"
    - "Privacy Policy"
    - "Data Protection Agreement"
    - "Docs"
    - "Pricing"
    - "Customers"
    - "Enterprise"
    - "Blog"
    - "Login"
  footer-links:
    - "Contact Us"
    - "Privacy Policy"
    - "Status"
    - "https://upstash.com/start-redis"
```

**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:
  thumbnail:
    count: 1
    avg-ratio: 1.00
    common-aspect: "~1:1 square"
    sample-alts:
      - "lagon logo"
```

**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 `0px` · radius `0px` · weight `400`_

### Generic Card
```html
<div class="card">
  <!-- content -->
</div>
```
_Source pattern detected: padding `32px` · radius `16px` · shadow `none`_

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


## 17. Content Architecture & Resources (Links by Purpose)

*The page's links classified by purpose — the information architecture to reproduce. Categories, featured images, devices and projects are extracted from the rendered DOM, not guessed.*

**By purpose:** **nav** 2 · **auth** 1 · **pricing** 2 · **docs** 4 · **blog** 2 · **project** 18 · **social** 2 · **footer** 5 · **download** 5 · **other** 4

**Primary actions (conversion path):**
- Account access — "Login" (login/signup) → `https://console.upstash.com/`

**Projects / case studies detected** (clustered by URL + featured image):

*Customers* — high confidence, 11 items:

| Title | Featured image | Link |
|---|---|---|
| "At our scale, it's important to use the rig | — | https://upstash.com/customers/supabase |
| "Upstash's global Redis has been a game chan | — | https://upstash.com/customers/paul-smith |
| "Developer experience became significantly b | — | https://upstash.com/customers/openart |
| "The Upstash JS SDK is incredibly easy to us | — | https://upstash.com/customers/dub |
| "We chose Upstash specifically because it of | — | https://upstash.com/customers/zapier |
| "Before Upstash we used Redis Cloud. This wa | — | https://upstash.com/customers/branch |
| "Before Upstash QStash, we struggled with up | — | https://upstash.com/customers/humata |
| "We were using Redis before for our cache bu | — | https://upstash.com/customers/gail |

*Docs* — medium confidence, 3 items:

| Title | Featured image | Link |
|---|---|---|
| Documentation | — | https://upstash.com/docs/redis |
| Restapi | — | https://upstash.com/docs/redis/features/restapi |
| Globaldatabase | — | https://upstash.com/docs/redis/features/globaldatabase |

**Signals:** 29/45 links carry a featured image · dominant link roles: content-card (25), footer-link (9), inline-link (9).


---
## Extraction Completeness: 69/100 (C)

| Category | Score | Max | Detail |
|----------|-------|-----|--------|
| Colors & Palette | 24 | 25 | 17 named colors |
| Typography | 18 | 20 | 7 roles defined |
| Components | 8 | 20 | 2 specs extracted |
| Motion & Interaction | 12 | 15 | Keyframes |
| CSS Custom Properties | 3 | 10 | 61 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.

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

- **Licensed web fonts (__Inter_f367f3, __Inter_Tight_a3c0d3, __JetBrains_Mono_3c557b)** — detected but not downloaded. Substitute with your licensed copy or a close fallback (see Typography section for metrics).
- **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.

| Category | What's missing | Fallback strategy |
|----------|----------------|-------------------|
| **Hero imagery** | No dominant hero image detected above the fold | Use the canonical brand visual from §9b (OG image) for hero composition |
| **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 | 61 CSS vars (semantic naming requires ≥20 for high) |
| §3 Typography | High | 7 typography roles inferred |
| §4 Components | Low | 2 component variants captured |
| §7 Motion | High | Keyframes + transitions |
| §8 Do's/Don'ts | High | 23 rules generated; design-decisions.json has evidence per rule |
| §9 Responsive | High | 6 breakpoints detected |
| §9b Photography | Medium | 1 images, hero not detected |

## 11.1 CSS Implementation Guide (CSS Interception Engine v2.15+)

*Ready-to-use CSS from Prism's CSS Interception Engine — intercepted directly from the site's CSS files (bypasses CORS). Copy-paste into your `<style>` block.*

### Font Loading

3 font file(s) captured (131KB total). When running `prism add`, fonts are saved to `extractions/upstash.com/fonts/` and embedded as base64 in the output HTML.

**@font-face declarations to use:**
```css
@font-face {
  font-family: '__Inter_f367f3';
  /* src: url('/fonts/__Inter_f367f3.woff2') format('woff2'); */
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: '__Inter_Fallback_f367f3';
  /* src: url('/fonts/__Inter_Fallback_f367f3.woff2') format('woff'); */
  font-weight: normal;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: '__Inter_Tight_a3c0d3';
  /* src: url('/fonts/__Inter_Tight_a3c0d3.woff2') format('woff2'); */
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: '__Inter_Tight_Fallback_a3c0d3';
  /* src: url('/fonts/__Inter_Tight_Fallback_a3c0d3.woff2') format('woff'); */
  font-weight: normal;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: '__JetBrains_Mono_3c557b';
  /* src: url('/fonts/__JetBrains_Mono_3c557b.woff2') format('woff2'); */
  font-weight: 100 800;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: '__JetBrains_Mono_Fallback_3c557b';
  /* src: url('/fonts/__JetBrains_Mono_Fallback_3c557b.woff2') format('woff'); */
  font-weight: normal;
  font-style: normal;
  font-display: swap;
}
```

### Keyframe Animations (Intercepted from CSS)

**5 @keyframes found** — these are the real animation definitions:

```
@keyframes pulse { ... }
@keyframes animate-slide { ... }
@keyframes animate-gradient { ... }
@keyframes headShake { ... }
@keyframes heartBeat { ... }
```

<details><summary>Full keyframes CSS (5 animations)</summary>

```css
@keyframes pulse{50%{opacity:.5}}
@keyframes animate-slide{0%{transform:translateZ(0)}
@keyframes animate-gradient{to{background-position:100% 100%}}
@keyframes headShake{0%{transform:translateX(0)}6.5%{transform:translateX(-6px) rotateY(-9deg)}18.5%{transform:translateX(5px) rotateY(7deg)}31.5%{transform:translateX(-3px) rotateY(-5deg)}43.5%{transform:translateX(2px) rotateY(3deg)}50%{transform:translateX(0)}}
@keyframes heartBeat{0%{transform:scale(1)}14%{transform:scale(1.1)}28%{transform:scale(1)}42%{transform:scale(1.1)}70%{transform:scale(1)}}
```
</details>

### Hover State CSS (Intercepted)

**2 hover rule lines** captured from CSS files. Key interactive transitions from real CSS (not inferred):

```css
*/*,:after,:before{box-sizing:border-box;border:0 solid #e5e7eb}:after,:before{--tw-content:""}:host,html{line-height:1.5;-webkit-text-size-adjust:100%;-moz-tab-size:4;-o-tab-size:4;tab-size:4;font-family:var(--font-sans);font-feature-settings:normal;font-variation-settings:normal;-webkit-tap-highlight-color:transparent}body{margin:0;line-height:inherit}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,pre,samp{font-family:var(--font-mono);font-feature-settings:normal;font-variation-settings:normal;font-size:1em}small{font-size:80%}sub,sup{font-size:75%;line-height:0;position:relative;vertical-align:baseline}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}button,input,optgroup,select,textarea{font-family:inherit;font-feature-settings:inherit;font-variation-settings:inherit;font-size:100%;font-weight:inherit;line-height:inherit;letter-spacing:inherit;color:inherit;margin:0;padding:0}button,select{text-transform:none}button,input:where([type=button]),input:where([type=reset]),input:where([type=submit]){-webkit-appearance:button;background-color:transparent;background-image:none}:-moz-focusring{outline:auto}:-moz-ui-invalid{box-shadow:none}progress{vertical-align:baseline}::-webkit-inner-spin-button,::-webkit-outer-spin-button{height:auto}[type=search]{-webkit-appearance:textfield;outline-offset:-2px}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-file-upload-button{-webkit-appearance:button;font:inherit}summary{display:list-item}blockquote,dd,dl,figure,h1,h2,h3,h4,h5,h6,hr,p,pre{margin:0}fieldset{margin:0}fieldset,legend{padding:0}menu,ol,ul{list-style:none;margin:0;padding:0}dialog{padding:0}textarea{resize:vertical}input::-moz-placeholder,textarea::-moz-placeholder{opacity:1;color:#9
```

> **Note**: All values above are extracted from the live site's CSS files. The font files are saved locally by Prism and embedded in the output HTML. Use them as-is for maximum fidelity.

## 11.2 Measured Reality (CDP Engine)

Captured directly from Chrome's engine across **all 1186 rendered nodes** — not a sample. These are the values the page *actually paints*, weighted by how often they appear.

### Real Responsive Breakpoints
**6 breakpoints** read from the live `@media` rules (not guessed):
`420px` · `640px` · `768px` · `1024px` · `1280px` · `1536px`

### Measured Design Scale
**Type scale by usage** (× = paint count): `16px`×686 · `13.76px`×213 · `24px`×111 · `14px`×59 · `20px`×49 · `48px`×24 · `12px`×16 · `30px`×9

**Radius scale** (× = paint count): `9999px`×105 · `35.2px`×28 · `12px`×27 · `16px`×11 · `100%`×5 · `6px`×5 · `8px`×3 · `50%`×2

**Weights** (× = paint count): `400`×1007 · `600`×102 · `500`×67 · `700`×6

**Layout gaps** (× = paint count): `8px`×60 · `2px`×13 · `16px`×7 · `4px`×6 · `32px`×5 · `12px`×2 · `24px`×2 · `48px`×1

**Elevation (real shadows)**:
```css
rgba(0, 0, 0, 0.05) 0px 1px 2px 0px
rgba(9, 14, 21, 0.16) 0px 5px 40px 0px
rgba(0, 0, 0, 0.1) 0px 1px 3px 0px, rgba(0, 0, 0, 0.1) 0px 1px 2px -1px
rgba(16, 185, 129, 0.3) 0px 0px 80px 0px
```

### Provenance — measured styles on key elements
Read from the live CSSOM (includes runtime-injected CSS). This is *what actually styles the page*, by element:

```css
body { background-color:var(--color-bg) }
body { font-size:.875rem }
body { color:var(--color-text) }
@media (min-width: 768px) body { font-size:1rem }
h1 { font-family:var(--font-display) }
h1 { font-size:3rem }
h1 { font-weight:700 }
@media (min-width: 768px) h1 { font-size:8rem }
h2 { font-size:1.125rem }
h2 { color:var(--color-text-mute) }
@media (min-width: 768px) h2 { font-size:1.5rem }
button { font-family:inherit; font-size:100%; font-weight:inherit; color:inherit }
```

> Selectors normalised to their semantic element — source class names are often build-hashed (`.bgDIHX`) and not reusable. The declarations + CSS vars are the transferable part.

---
*Generated by Prism — automated Playwright extraction + design analysis.*
*Source: https://upstash.com | 2026-06-11T06:19:37.157Z*
*Values extracted via getComputedStyle() (rendered) + CSS custom properties (tokens, marked `(token)`). Token-only values may not be painted — verify against the live site before shipping.*