--- version: alpha name: mistral.ai description: "Light product system built on #fbfbf8 with #09090b as the primary CTA accent. Type anchored in ALTMistral at 96px / weight 500. Extracted automatically from https://mistral.ai/ — rendered styles via getComputedStyle() + CSS custom properties (token-only values may not be painted)." narrative: | mistral.ai is built on a warm, off-white canvas (rgb(251, 251, 248)). The system uses rgb(9, 9, 11) as a near-neutral accent (low saturation). Sharp 0px corners on CTAs — architectural restraint, engineering precision alongside ALTMistral as the primary typeface. A restrained elevation system (1 distinct shadow) — shadows reserved for the few elements that must lift off the page. Motion is a first-class concern — 21 keyframe animations plus transition-driven interactions. colors: background: "#fbfbf8" surface-1: "#ffffff" surface-2: "#f5f4ef" ink-muted: "#242433" ink-subtle: "#27272a" primary: "#09090b" on-primary: "#ffffff" primary-hover: "#ffaf01" hairline: "#e4e3de" typography: display-xl: fontFamily: "ALTMistral, 'SF Pro Display', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif" fontSize: 16px fontWeight: 400 lineHeight: 1.5 letterSpacing: 0 display-md: fontFamily: "Inter, 'SF Pro Display', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif" fontSize: 16px fontWeight: 400 lineHeight: 1.5 letterSpacing: 0 body: fontFamily: "Space Mono, 'SF Mono', 'JetBrains Mono', Menlo, monospace" fontSize: 11px fontWeight: 400 lineHeight: 1.45 letterSpacing: 0 caption: fontFamily: "ALTMistral, 'SF Pro Display', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif" fontSize: 14px fontWeight: 500 lineHeight: 1.43 letterSpacing: 0.28px eyebrow: fontFamily: "Space Mono, 'SF Mono', 'JetBrains Mono', Menlo, monospace" fontSize: 11px fontWeight: 400 lineHeight: 1.45 letterSpacing: 0 rounded: none: 0px xs: 4px sm: 8px md: 12px lg: 32px xl: 40px pill: 9999px spacing: xxs: 2px xs: 8px sm: 12px md: 16px lg: 60px xl: 80px xxl: 96px components: button-dark--solid: backgroundColor: "{colors.primary}" textColor: "#fafafa" typography: "{typography.display-xl}" rounded: "{rounded.xs}" padding: 8px 12px card-standard-card: backgroundColor: "transparent" typography: "{typography.display-xl}" rounded: "{rounded.none}" padding: 8px extracted_at: "2026-06-11T05:01:40.934Z" completeness: 69 scoreVersion: "v2" --- # Design System — mistral.ai > Extracted automatically by Prism from https://mistral.ai > 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**: animated  |  **Weight**: light  |  **Aesthetic**: product-neutral | Dimension | Value | Signal | |---|---|---| | Canvas | neutral | `#fbfbf8` | | Type posture | sans-led (Inter) | "Frontier AI.In your hands." | | Color assertion | dual-accent | #09090b | | Whitespace | sparse | section rhythm 88px | | Interaction | animated | 21 keyframes, 7 transitions | | Radius language | 6px-rounded | from token scale | **Prism fingerprint**: `neutral-canvas · sans-display · dual-accent · 6px-rounded · animated-motion` > **🤖 TL;DR for AI agents** (read this first — saves you scanning the full doc): > > - **Canvas**: `rgb(251, 251, 248)` is the page background. Every component composits against this. > - **Accent**: `rgb(9, 9, 11)` for primary CTAs ONLY. Never decorative. > - **Body type**: 16px (token: `typography.body`). Default for ALL text not in a heading role. > - **Section rhythm**: 88px between major bands. Card padding: 60px. > - **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 mistral.ai's canvas is a warm, intentionally-tinted surface (`#fbfbf8`) — a refusal of the default white that immediately signals editorial intent. This isn't sterility, it's an invitation to read. Headlines are set in **ALTMistral**, a sans-serif display face (the dominant type signature, e.g. "Frontier AI.In your hands." at 96px). Body text is set in **Inter**. Body text reads in Black (`#000000`) (contrast ratio 20.7:1, well above WCAG AA). **Pure Black** (`#09090b`) provides interactive distinction without visual aggression. Elevation comes from a small, deliberate set of shadows (1 distinct), each a multi-layer stack — several blurred layers at varying offsets — used sparingly rather than across the whole UI. Motion design uses smooth easing curves for polished state transitions. **Key Characteristics:** - Background: Off-White (`#fbfbf8`) - Primary typeface: ALTMistral - Accent: Pure Black (`#09090b`) - Shadow system: 1 distinct elevation levels - Custom fonts loaded: ALTMistral, Space Mono, Inter, Source Sans 3 ## 2. Color Palette & Roles ### Background & Surface - **Off-White** (`#fbfbf8`): Page background (primary) - **Surface Brand Tertiary** (`#ebe9e0`): Surface / elevated background (CSS var) - **Surface Brand Secondary** (`#f5f4ef`): Surface / elevated background (CSS var) - **White** (`#ffffff`): Surface / elevated background ### Text & Content - **Black** (`#000000`): Primary body text - **Text Brand 3** (`#e51300`): Text (CSS var) - **Text Brand 1** (`#ff5229`): Text (CSS var) - **Text Brand 2** (`#0082e6`): Text (CSS var) - **Text Brand 5** (`#ff8204`): Text (CSS var) ### Accent & Interactive - **Action Invert Ghost 1** (`rgba(249, 249, 251, 0.050980392156862744)`): Accent / interactive (CSS var) - **Action Ghost 2** (`rgba(7, 7, 11, 0.10196078431372549)`): Accent / interactive (CSS var) - **Amber** (`#ffaf01`): Interactive / accent - **M Tricolor Red** (`#e61300`): Interactive / accent - **#c4001d** (`#c4001d`): Interactive / accent - **Bright Orange** (`#fa500f`): Interactive / accent - **Light Blue** (`#b9daff`): Interactive / accent ### Border & Divider - **Border Primary** (`#e4e3de`): Border (CSS var) - **Border Invert** (`#31313a`): Border (CSS var) - **Border Secondary** (`#c9c9c4`): Border (CSS var) ### Full Extracted Palette **19 colors rendered on the page** + **32** more declared in design tokens (CSS custom properties — not necessarily painted). (19 categorized above + 32 additional below.) Rendered values are read via `getComputedStyle()`; token values come from CSS variable declarations. Third-party logo colors are filtered out. - `#151524` — Surface Invert - `#242433` — Warm Brown - `#a6a6a6` — Grey - `#121227` — Deep Navy - `#b8b8cc` — Silver *(token)* - `#ffb598` — #ffb598 *(token)* - `#343446` — Dark Gray *(token)* - `#ff92dc` — #ff92dc *(token)* - `#fff0eb` — Warm Cream *(token)* - `#fec63a` — #fec63a *(token)* - `#933800` — Chocolate *(token)* - `#88889c` — Medium Gray *(token)* - `#83075c` — #83075c *(token)* - `#44ba82` — #44ba82 *(token)* - `#55b3fb` — #55b3fb *(token)* - `#ffdd73` — #ffdd73 *(token)* - `#dcdcde` — Whitesmoke *(token)* - `#f66c60` — Coral *(token)* - `#6d6d78` — Dim Gray *(token)* - `#055737` — #055737 *(token)* - `#044298` — Cobalt Blue *(token)* - `#56566c` — Slate *(token)* - `#ff6529` — #ff6529 *(token)* - `#e1493c` — Vermillion *(token)* - `#ffc2eb` — Soft Pink *(token)* - `#fafaf4` — Off-White *(token)* - `#6f6f84` — Slate Gray *(token)* - `#ffdccf` — Soft Pink *(token)* - `#94eacc` — #94eacc *(token)* - `#318e68` — Teal *(token)* - `#f2f1e8` — Off-White *(token)* - `#b75002` — #b75002 *(token)* ### CSS Custom Properties (Design Tokens) **Shadow Token** - `--tw-inset-shadow-alpha`: `100%` - `--tw-ring-shadow`: `0 0 #0000` - `--tw-drop-shadow-alpha`: `100%` - `--tw-inset-ring-shadow`: `0 0 #0000` **Spacing Token** - `--text-h5--letter-spacing`: `0` - `--text-display--letter-spacing`: `-.02em` - `--text-h1--letter-spacing`: `-.02em` - `--text-eyebrow--letter-spacing`: `0` **Font Weight Token** - `--text-eyebrow--font-weight`: `400` - `--text-button-small--font-weight`: `500` - `--text-h3--font-weight`: `500` - `--text-h5--font-weight`: `500` **Error / Destructive** - `--color-red-strong`: `#e51300` - `--color-red-500`: `#f66c60` - `--color-red-600`: `#e51300` **Text Color** - `--color-text-brand-3`: `#e51300` - `--color-text-secondary`: `oklch(27.4% .006 286.033)` - `--color-text-tertiary`: `oklch(37% .013 285.805)` - `--color-text-brand-1`: `#ff5229` **Border Radius Token** - `--radius-4xl`: `2rem` - `--radius-sm`: `.25rem` - `--radius-2xl`: `1rem` - `--radius-md`: `.375rem` **Warning** - `--color-yellow-400`: `#fec63a` - `--color-yellow-300`: `#ffdd73` - `--color-yellow-500`: `#ffaf01` **Border** - `--color-border-primary`: `#e4e3de` - `--color-border-invert`: `#31313a` - `--color-border-secondary`: `#c9c9c4` **Background** - `--color-surface-invert`: `#151524` - `--color-surface-brand-tertiary`: `#ebe9e0` - `--color-surface-neutral-tertiary`: `oklch(92% .004 286.32)` - `--color-surface-brand`: `#ff5229` **Success** - `--color-green-500`: `#44ba82` - `--color-green-900`: `#055737` - `--color-green-300`: `#94eacc` - `--color-green-700`: `#318e68` **Motion Token** - `--default-transition-duration`: `.15s` - `--default-transition-timing-function`: `cubic-bezier(.4, 0, .2, 1)` **Font Family Token** - `--default-mono-font-family`: `"Space Mono", monospace` **Other tokens** - `--color-zinc-100`: `oklch(96.7% .001 286.375)` - `--color-icon-invert`: `oklch(98.5% 0 0)` - `--color-navy-300`: `#b8b8cc` - `--color-zinc-200`: `oklch(92% .004 286.32)` - `--color-orange-200`: `#ffb598` - `--color-tangerine-500`: `#ff8204` - `--color-navy-800`: `#343446` - `--color-pink-300`: `#ff92dc` ## 3. Typography Rules ### Font Families - **Primary**: `Inter` - **Secondary**: `ALTMistral` - **Font 3**: `Space Mono` - **Font 4**: `Source Sans 3` - **Font 5**: `ui-sans-serif` ### Custom Fonts Loaded - **ALTMistral** weight 400 (normal) - **ALTMistral** weight 500 (normal) - **ALTMistral** weight 600 (normal) - **Space Mono** weight 400 (normal) - **Inter** weight 400 (normal) - **Source Sans 3** weight 400 (normal) - **Source Sans 3** weight 500 (normal) - **Source Sans 3** weight 600 (normal) - **Source Sans 3** weight 700 (normal) ### Typography Hierarchy | Role | Font | Size | Weight | Line Height | Letter Spacing | Notes | |------|------|------|--------|-------------|----------------|-------| | Display Hero | ALTMistral | 16px | 400 | 1.5 | normal | Main headline (h1) | | Sub-heading | Inter | 16px | 400 | 1.5 | normal | Section titles (h3) | | Caption / Badge | ALTMistral | 14px | 500 | 1.43 | 0.28px | small text (14px) | | Eyebrow / Overline | Space Mono | 11px | 400 | 1.45 | normal | Label above heading, uppercase tag | ### Font Weight Scale CSS custom properties define 17 explicit weight steps: - `--text-eyebrow--font-weight`: `400` — Regular - `--text-body-small--font-weight`: `400` — Regular - `--text-body-base--font-weight`: `400` — Regular - `--text-eyebrow-small--font-weight`: `400` — Regular - `--text-body-large--font-weight`: `400` — Regular - `--text-button-small--font-weight`: `500` — Medium - `--text-h3--font-weight`: `500` — Medium - `--text-h5--font-weight`: `500` — Medium - `--text-h2--font-weight`: `500` — Medium - `--text-h4--font-weight`: `500` — Medium - `--text-h1--font-weight`: `500` — Medium - `--text-button-large--font-weight`: `500` — Medium - `--text-h6--font-weight`: `500` — Medium - `--text-display--font-weight`: `500` — Medium - `--font-weight-medium`: `500` — Medium - `--font-weight-semibold`: `600` — SemiBold - `--font-weight-bold`: `700` — Bold ### Full Font Size Scale Sizes detected in the design (descending): `96px`, `56px`, `44px`, `32px`, `24px`, `20px`, `16px`, `14px`, `13px`, `11px` > 7 size(s) detected outside the sampled hierarchy (96px, 56px, 44px, 32px, 24px, 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 **Dark / Solid** - Background: `#09090b` `{colors.primary}` - Text: `#fafafa` - Padding: 8px 12px - Radius: 6px - Font: 16px weight 400 - Use: Solid dark CTA ### Cards & Containers **Standard Card** - Background: `transparent` - Padding: 8px - Radius: 0px - Use: Content containers, listing items ## 4b. Component Behaviors (State Matrix) ### Interaction State Narrative - **Link**: - **hover:** bg transparent → #fbfbf8 *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(0, 0, 0)" link: default: bg: "rgba(0, 0, 0, 0)" fg: "rgb(0, 0, 0)" hover: bg: "rgb(251, 251, 248)" fg: "inherit" card: default: bg: "rgba(0, 0, 0, 0)" fg: "rgb(0, 0, 0)" navLink: default: bg: "rgb(251, 251, 248)" fg: "rgb(0, 0, 0)" footerLink: default: bg: "rgba(0, 0, 0, 0)" fg: "rgb(0, 0, 0)" ``` **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 - **1 shape(s)** in this system: `Dark / Solid` - **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 | 8px | | sm | 12px | | md | 16px | | base | 40px | | lg | 60px | | xl | 80px | | 2xl | 88px | | 3xl | 96px | ### 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 | 32px | Large rounded elements, pill segments | | Xl | 40px | Category strips, featured containers | | Full | 9999px | Pills, avatars, circular elements | ### Shape Language | Component | Border Radius | |-----------|---------------| | Buttons | `6px` | | Cards & Containers | `0px` | | Page Body | `0px` | | Navigation | `0px` | **Shape Personality**: Moderate Rounding — Medium corners (4–12px). Modern SaaS standard, neither sharp nor pill. **Full Radius Spectrum**: 0px, 4px, 6px, 8px, 12px, 32px (from `allBorderRadii` scan) ## 5b. Spacing Rhythm Names **Measured section padding**: bands use ~60px internal vertical padding (up to 80px) — **standard**. (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** | `96px` | Top/bottom of full-bleed hero sections | | **section** | `80px` | Between major bands (color change, content shift) | | **subsection** | `60px` | Within a section, between content groups | | **card** | `16px` | Card padding, list-item spacing | | **compact** | `12px` | Form fields, tight clusters, badge padding | | **micro** | `8px` | 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). **3/8 structural patterns detected.** ### Navigation Pattern - **Position:** static (scrolls with page) - **Layout:** unknown — Layout not classified - **Height:** 48px - **Logo:** ✗ absent - **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:** 8 cards detected - **Columns (desktop):** 1-up grid - **Card dimensions:** 1439×851px (aspect 1.69:1) - **Gap:** 0px between cards - **Content:** ✗ no image + icon + CTA - **Clone instruction:** Build a 1-column grid (desktop) with cards at ~1.69:1 aspect ratio. Text/icon-only cards (no photography). ### Footer Pattern - **Columns:** 1 - **Links:** 1 total - **Height:** 52px - **Includes:** ✗ no newsletter | ✗ no social | - **Clone instruction:** Build a 1-column footer with ~1 links per column. ## 6. Depth & Elevation | Level | Treatment | Use | |-------|-----------|-----| | Flat (Level 0) | No shadow | Page background, content blocks | | Layered (Level 1) |
`rgba(21, 21, 31, 0.02) 0px 4px 8px 0px`,
`rgba(21, 21, 31, 0.02) 0px 2px 4px 0px`,
`rgba(21, 21, 31, 0.02) 0px 1px 2px 0px`,
`rgba(21, 21, 31, 0.02) 0px 0px 1px 0px` | Cards, elevated surfaces | **Shadow Philosophy**: Multi-layered shadow system creating natural, atmospheric depth. Each shadow level combines multiple layers for realistic elevation. ## 7. Motion & Interaction ### Easing System | CSS Variable | Curve | Semantic Name | |--------------|-------|---------------| | `--ease-in-out` | `cubic-bezier(.4, 0, .2, 1)` | Ease Out — Decelerating | | `--default-transition-timing-function` | `cubic-bezier(.4, 0, .2, 1)` | Ease Out — Decelerating | | `--ease-out` | `cubic-bezier(0, 0, .2, 1)` | Ease Out — Decelerating | ### Duration Scale | CSS Variable | Value | Tier | |--------------|-------|------| | `--default-transition-duration` | `.15s` | Fast | ### Copy-Paste Transition Snippets **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); ``` **Transform** ```css transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1) 0.05s, translate 0.3s cubic-bezier(0.4, 0, 0.2, 1) 0.05s, scale 0.3s cubi...; ``` **Transform** ```css transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), translate 0.3s cubic-bezier(0.4, 0, 0.2, 1), scale 0.3s cubic-bezier(0.4...; ``` ### Keyframe Animation Catalog | Animation Name | Type | Animated Props | Use Hint | |----------------|------|----------------|----------| | `from-left` | Fade + Move | opacity, transform | UI transition | | `from-right` | Fade + Move | opacity, transform | UI transition | | `from-top` | Fade + Move | opacity, transform | UI transition | | `from-tl` | Fade + Move | opacity, transform | UI transition | | `from-br` | Fade + Move | opacity, transform | UI transition | | `RevealRight` | Slide | clip-path, transform | UI transition | | `RevealLeft` | Slide | clip-path, transform | UI transition | | `pageIn` | Scale | transform | UI transition | | `dot-pulse` | Fade | opacity, border-top-width, border-right-width, border-bottom-width, border-left-width | Attention / status | | `fading-arrow-scroll` | Fade | opacity | UI transition | | `fade-in` | Fade | opacity | Element entrance | | `cover-gradient-1` | Rotate / Spin | background-position-x, background-position-y, background-size, transform | UI transition | | `mouseBlock2` | Fade + Move | opacity, transform | UI transition | | `mouseBlock1` | Fade + Move | opacity, transform | UI transition | | `scaleIn` | Scale | transform | Focus / emphasis | | `wave-a` | Custom | height, y | UI transition | | `wave-b` | Custom | height, y | UI transition | | `wave-c` | Custom | height, y | UI transition | ### Motion Fingerprint - **Speed Character**: Balanced Pacing (median duration: `150ms`) - **Dominant Easing**: custom cubic-bezier curves - **Animation Library**: 18 unique animations (21 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 Off-White (`#fbfbf8`) as the page background — it's intentionally not pure white - Use Inter as the primary typeface — it defines the brand personality - Use the extracted shadow patterns for elevation — they are tuned to match the brand palette - Use Action Primary (`#09090b`) as the primary accent — it's the brand's signature interactive color - Use 6px border-radius on buttons — the standard corner rounding for interactive elements - Apply 8px padding inside cards — matches the design system's content breathing room - Maintain nav height at 48px — consistent vertical space for the navigation bar - Respect the 8px–80px spacing range — the design uses a wide scale for visual breathing room - 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 substitute with generic sans-serif or serif — the custom font carries the brand - Don't invent new shadow values — use only the extracted shadow levels - Don't introduce additional saturated accent colors — the palette is intentionally controlled - Don't 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, 1 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 `rgb(251, 251, 248)` as the base canvas" why: "Every component is designed to composit against this exact tone" test: "document.body.style.backgroundColor === 'rgb(251, 251, 248)'" - id: brand-accent-001 type: do rule: "Reserve `rgb(9, 9, 11)` for primary CTAs and brand-mark signals only" why: "Single chromatic assertion device — overuse dilutes meaning" test: "querySelectorAll('[style*=\"rgb(9, 9, 11)\"]').length <= 3 per fold" ``` ## 9. Responsive Behavior ### Breakpoints | Name | Width | Key Changes | |------|-------|-------------| | Tablet | 768px | Multi-column grids begin | ### Token Diff — Desktop vs Mobile | Element | Property | Desktop | Mobile | |---------|----------|---------|--------| | nav | height | `48px` | `100%` | | card | width | `100%` | `251px` | ### 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: 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.* - **Canvas / 2D rendering** — animated/interactive canvas (charts, graphs, particle fields). Reproduce as live data-viz (e.g. an animated SVG/Canvas line chart), NOT a static image. - **Clip-path shapes** — 3 non-rectangular cut(s). - **Blend modes** — 1 mix-blend layer(s). > **Motion fingerprint**: Canvas 2D, non-rectangular shapes (3), blend modes ## 9b. Visual Tone & Photography **Tone:** Photography-driven The site is dominated by photography (JPG/WebP). Photos carry the brand voice as much as the typography. Use authentic, brand-appropriate imagery — generic stock will degrade quality. **Canonical Brand Image (OG):** - https://mistral.ai/cms-media/api/media/file/OG-mistral-main_1x.jpg (1200×630px) *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: 1:1 (square / portrait) - Rendered size: 64×64px - *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): 22 (45%) - Portrait (<0.87): 0 (0%) - Square (0.87–1.15): 27 (55%) **Media Format Mix:** - WebP: 48 (optimized photo/illustration hybrid) - SVG: 2 (icons, illustrations, decorative geometry) **Average rendered image size:** 348×203px **Above-fold image count:** 3 / 49 **Decorative Patterns Detected:** - 1 large decorative SVG shape (≥200×200px, non-icon) — likely blob/illustration accents **Clone instruction for decorative work:** Decorative details are subtle — don't over-style; the design relies on restraint. **Imagery Guidance for clones:** - Source authentic photography (or licensed stock that matches the brand mood) — placeholders will visibly degrade the clone. - Match the dominant aspect ratio (see above) so card grids and hero compositions hold. ## 10. Agent Prompt Guide ### Quick Reference - Background: Off-White (`#fbfbf8`) - Primary text: Black (`#000000`) - Accent: Pure Black (`#09090b`) - Border: Whitesmoke (`#e4e3de`) - Font: Inter - Body: 16px weight 400 ### Example Component Prompts - "Create a hero section on Off-White background (#fbfbf8). Headline at 16px Inter weight 400, line-height 1.5, color #000000." - "Create the primary CTA button: `#09090b` background, `#000000` text, 9999px border-radius, 12px 24px padding, 500 weight, Inter font." - "Design a card on `transparent` background. Border: none. Radius: 0px. Shadow: none. Padding: 8px." - "Build navigation: static on `#fbfbf8`. Inter 16px weight 400 for links." ### Iteration Guide 1. **Canvas**: Set the light canvas to Off-White (`#fbfbf8`) — every component is composited against this exact base. 2. **Typography**: All type in Inter, weight range 400–700. Never exceed 700 — heavier weights break the brand's tonal restraint. 3. **Accent**: Pure Black (`#09090b`) is the sole interactive color. On hover → Amber (`#ffaf01`). Use CSS transitions, not opacity/brightness filters. 4. **Motion**: All transitions use `cubic-bezier(0.4,0,0.2,1)`. Timing: 150ms for micro-interactions, 150ms for layout changes. Never use linear for UI transitions — preserve the brand's easing personality. 5. **Shape**: CTAs at `0px`, cards at `0px`. Apply border-radius from the extracted scale only — don't invent intermediate values. 6. **Spacing**: Use the `--ca-space-*` token scale (8px–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: #fbfbf8; --ca-on-primary: #ffffff; --ca-surface-2: #f5f4ef; --ca-ink-muted: #242433; --ca-ink-subtle: #27272a; --ca-primary: #09090b; --ca-primary-hover: #ffaf01; --ca-hairline: #e4e3de; } /* Typography */ :root { --ca-font-primary: "ALTMistral", system-ui, sans-serif; --ca-text-display: 16px; --ca-text-body: 11px; --ca-text-caption: 14px; } /* Spacing & Radius */ :root { --ca-space-xxs: 2px; --ca-space-xs: 8px; --ca-space-sm: 12px; --ca-space-md: 16px; --ca-space-base: 40px; --ca-space-lg: 60px; --ca-space-xl: 80px; --ca-space-2xl: 88px; --ca-space-3xl: 96px; --ca-radius-none: 0px; --ca-radius-xs: 4px; --ca-radius-sm: 8px; --ca-radius-md: 12px; --ca-radius-lg: 32px; --ca-radius-xl: 40px; --ca-radius-full: 9999px; } /* Motion */ :root { --ca-ease-in-out: cubic-bezier(.4, 0, .2, 1); --ca-ease-out: cubic-bezier(0, 0, .2, 1); } ``` ## 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: content-section tag: main height: 10817px width: full-bleed layout: block children: 1 contains: chart/canvas (reproduce as live data-viz, not a flat image) - section: content-section tag: mistral-section-hero-home classes: ["block", "w-full", "lg:min-h-[200dvh]"] height: 1800px width: full-bleed layout: block children: 1 contains: chart/canvas (reproduce as live data-viz, not a flat image) - section: unknown tag: mistral-section-slider-logo-scrolling classes: ["block", "w-full"] height: 272px width: full-bleed layout: block children: 1 - section: content-section tag: mistral-block-slider-cards-collection classes: ["block", "w-full", "bg-surface-brand-secondary"] height: 779px width: full-bleed layout: block children: 3 bg: "rgb(245, 244, 239)" - section: content-section tag: div classes: ["snap-x", "snap-mandatory", "lg:overflow-hidden", "p-2"] height: 552px width: 1078px layout: block children: 1 padding: "8px" - section: unknown tag: div classes: ["w-full", "px-4", "lg:px-10", "bg-surface-brand-primary"] height: 316px width: full-bleed layout: block children: 1 bg: "rgb(251, 251, 248)" padding: "0px 40px" - section: section tag: section classes: ["flex", "flex-col", "py-10", "items-center"] height: 316px width: 1360px layout: flex-column justify=center children: 1 vertical-padding: ~80px (generous) padding: "80px 0px" - section: section tag: section height: 825px width: full-bleed layout: block children: 1 - section: content-section tag: mistral-block-card-product classes: ["w-full", "block", "last:-mb-px"] height: 810px width: 1086px layout: block children: 1 - section: gallery-grid tag: section classes: ["md:grid", "grid-cols-10"] height: 4818px width: 1360px layout: grid: 10-col gap=normal children: 2 - section: content-section tag: mistral-block-card-product classes: ["w-full", "block", "last:-mb-px"] height: 810px width: 1086px layout: block children: 1 - section: content-section tag: mistral-block-card-product classes: ["w-full", "block", "last:-mb-px"] height: 806px width: 1086px layout: block children: 1 - section: content-section tag: mistral-block-card-product classes: ["w-full", "block", "last:-mb-px"] height: 810px width: 1086px layout: block children: 1 - section: unknown tag: mistral-block-card-product classes: ["w-full", "block", "last:-mb-px"] height: 778px width: 1086px layout: block children: 1 - section: content-section tag: mistral-block-card-product classes: ["w-full", "block", "last:-mb-px"] height: 806px width: 1086px layout: block children: 1 - section: unknown tag: div classes: ["w-full", "px-4", "lg:px-10", "bg-surface-brand-primary"] height: 228px width: full-bleed layout: block children: 1 bg: "rgb(251, 251, 248)" padding: "0px 40px" - section: section tag: section classes: ["flex", "flex-col", "py-10", "lg:py-10"] height: 228px width: 1360px layout: flex-column justify=normal children: 1 vertical-padding: ~40px padding: "40px 0px" - section: content-section tag: div classes: ["w-full", "md:px-10"] height: 462px width: full-bleed layout: block children: 1 padding: "0px 40px" - section: content-section tag: section classes: ["flex", "gap-10"] height: 462px width: 1360px layout: flex-row justify=normal children: 1 - section: content-section tag: div classes: ["snap-x", "snap-mandatory", "overflow-x-auto", "hide-scrollbar"] height: 462px width: 1360px layout: block children: 1 - section: unknown tag: div classes: ["w-full", "px-4", "lg:px-10", "bg-surface-brand-primary"] height: 472px width: full-bleed layout: block children: 1 bg: "rgb(21, 21, 36)" tone: dark padding: "0px 40px" - section: section tag: section classes: ["flex", "flex-col", "pt-20", "pb-7"] height: 472px width: 1360px layout: flex-column justify=center children: 1 vertical-padding: ~80px (generous) padding: "80px 0px" - section: content-section tag: section classes: ["py-6", "md:py-10", "gap-10", "bg-surface-brand-primary"] height: 462px width: full-bleed layout: block children: 1 bg: "rgb(21, 21, 36)" tone: dark vertical-padding: ~40px padding: "40px 0px" - section: section tag: section classes: ["relative", "flex", "flex-col"] height: 380px width: full-bleed layout: flex-column justify=normal children: 1 vertical-padding: ~60px (generous) - section: content-section tag: global-footer height: 1082px 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: sub-headings: - "Products" ctas: - "Products" - "Contact sales" - "Start building" - "Studio Build, test, and run AI agents and apps." - "Delivery methodology" - "Introducing Search Toolkit" navigation: - "Contact sales" - "Start building" - "Vibe AI agent for long-horizon work." - "Plans" - "API pricing" - "For enterprises" - "Delivery methodology" - "Model customization" - "Financial services" - "Public sector & government" footer-links: - "Read all news" - "Vibe" ``` **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: 13 avg-ratio: 2.66 common-aspect: "~16:6 banner" sample-alts: - "IBM" - "ASML (black)" - "Cisco logo" thumbnail: count: 21 avg-ratio: 1.01 common-aspect: "~1:1 square" ``` **Agent rule**: when generating placeholder images, match these counts and aspect ratios. Use neutral placeholder backgrounds for `product` (e.g. `#f5f5f5`), full-color photography hints for `hero` and `editorial`. ## 16. Component HTML Templates *Suggested HTML markup for reproducing the key components — based on what was detected in the source DOM.* ### Button (primary action) ```html ``` _Source pattern detected: padding `0px` · radius `0px` · weight `400`_ ### Generic Card ```html
``` _Source pattern detected: padding `40px` · radius `0px` · 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** 11 · **product** 17 · **pricing** 4 · **docs** 3 · **blog** 14 · **project** 7 · **footer** 4 **Projects / case studies detected** (clustered by URL + featured image): *News* — medium confidence, 7 items: | Title | Featured image | Link | |---|---|---| | Mistral Medium 3.5 | `2a1ffaf3-f171-460b-be1b-fc734aa776aa` (ar 1) | https://mistral.ai/news/vibe-remote-agents-mistral-medium-3-5/ | | Mistral Small 4 | `icon-m-flower.svg` (ar 1) | https://mistral.ai/news/mistral-small-4/ | | Mistral 3 | `icon-m-lightbulb.svg` (ar 1) | https://mistral.ai/news/mistral-3/ | | Voxtral TTS | `icon-m-microphone.svg` (ar 1) | https://mistral.ai/news/voxtral-tts/ | | AI Now Summit 2026 | — | https://mistral.ai/news/ai-now-summit-2026 | | Vibe gets to work. | — | https://mistral.ai/news/vibe-agent | | Introducing Search Toolkit | — | https://mistral.ai/news/search-toolkit | *Products* — medium confidence, 5 items: | Title | Featured image | Link | |---|---|---| | Studio Build, test, and run AI agents and ap | `ai-app_Z2q9iqE.webp?dpl=6a29ec46f50c` (ar 1) | https://mistral.ai/products/studio/ | | Forge Train, align, and evaluate custom AI m | `logo-forge_ZFCTMS.webp?dpl=6a29ec46f` (ar 1) | https://mistral.ai/products/forge/ | | Vibe AI agent for long-horizon work. | `vibe_19h78z.webp?dpl=6a29ec46f50cbb0` (ar 1) | https://mistral.ai/products/vibe/ | | Vibe for code Coding agents in the terminal, | `logo-vibe-code_ZmCjpX.webp?dpl=6a29e` (ar 1) | https://mistral.ai/products/vibe/code/ | | Compute Frontier-scale infrastructure for tr | `logo-compute_Z1P9afi.webp?dpl=6a29ec` (ar 1) | https://mistral.ai/products/compute/ | *Solutions* — medium confidence, 4 items: | Title | Featured image | Link | |---|---|---| | Model customization | — | https://mistral.ai/solutions/custom-model-training/ | | Coding | — | https://mistral.ai/solutions/coding/ | | Document intelligence | — | https://mistral.ai/solutions/document-ai/ | | Speech | — | https://mistral.ai/solutions/speech/ | *Customers* — high confidence, 4 items: | Title | Featured image | Link | |---|---|---| | ASML | — | https://mistral.ai/customers/asml/ | | CMA CGM | — | https://mistral.ai/customers/cma-cgm/ | | HSBC | — | https://mistral.ai/customers/hsbc/ | | BMW | — | https://mistral.ai/customers/bmw/ | **Signals:** 44/60 links carry a featured image · device mockups detected: phone ×1 · dominant link roles: content-card (36), footer-link (12), navigation (11). --- ## Extraction Completeness: 69/100 (C) | Category | Score | Max | Detail | |----------|-------|-----|--------| | Colors & Palette | 25 | 25 | 19 named colors | | Typography | 10 | 20 | 4 roles defined | | Components | 8 | 20 | 2 specs extracted | | Motion & Interaction | 15 | 15 | Keyframes, easing vars | | CSS Custom Properties | 10 | 10 | 231 vars | | Responsive Breakpoints | 1 | 5 | 1 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 (ALTMistral, Space Mono, Inter)** — detected but not downloaded. Substitute with your licensed copy or a close fallback (see Typography section for metrics). - **Limited breakpoint data** — fewer than 3 media query breakpoints detected. The site may use fluid CSS (clamp/vw) or container queries for responsiveness rather than traditional breakpoints. - **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 | |----------|----------------|-------------------| | **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 | 231 CSS vars (semantic naming requires ≥20 for high) | | §3 Typography | Medium | 4 typography roles inferred | | §4 Components | Low | 2 component variants captured | | §7 Motion | High | Keyframes + transitions | | §8 Do's/Don'ts | High | 17 rules generated; design-decisions.json has evidence per rule | | §9 Responsive | Medium | 1 breakpoints detected | | §9b Photography | High | 49 images, hero present | ## 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 `