# DESIGN.md: Mailchimp-style design system

Measured from https://mailchimp.com/ on 2026-10-14 by PikSpec (https://www.pikspec.com). An independent measurement of the rendered page, not Mailchimp's official design system, and not affiliated with Mailchimp.

Use it to build your own product in this design language: put this file in your project root and tell your AI tool (Claude Code, Cursor, Codex, Lovable, v0) to follow DESIGN.md. Never use the original's name, logo, copy or images; licensed fonts are replaced with the closest free Google Fonts.

To capture any other page, or get a ready project for your tool: https://www.pikspec.com/build-with-ai

HOW IT SHOULD LOOK
Build it in the design language of mailchimp.com, measured from the live site: it should feel designed by the same team as mailchimp.com — the same temperament, colour, type and density — for a different product. Never use mailchimp.com's name, logo, words or images.

Stack: use the one your project already has. Starting fresh: React + Vite + TypeScript + Tailwind CSS v4, with no UI kit (no shadcn/ui, MUI or Chakra) — their defaults would override this system. In a chat that shows one file (an artifact or canvas), build one HTML file instead, with the tokens below in its <style> block.
Use every value exactly as written. Do not round, rename, approximate or substitute a colour, size, radius, shadow or easing (fonts: see section 1). Anything not listed here does not exist in this system.

THE WEBSITE THIS SYSTEM COMES FROM
- Reference page: https://mailchimp.com/ — "mailchimp.com" (home page).
- Page frame: a top navigation bar, a persistent side panel beside the content and a footer. This is a tool- or docs-style layout, not a marketing page of stacked full-width bands.
- Content is grouped in cards (11 on the page, up to 2 side by side). Keep cards for grouped content only, not for every section.
- It uses 202 images, 2 of them large. Large, real product imagery is part of the look — leave clearly labelled image slots at those sizes rather than stock photos or abstract 3D shapes.
- Interaction: 20 buttons and 13 form fields on one page — a working interface, so favour dense, functional controls over big marketing calls to action.
- The page runs about 8 screens long at 1440px wide.
- Density is moderate.

HOW IT LOOKS (WHAT MAKES IT LOOK LIKE ITSELF, BEYOND THE VALUES)
- Almost entirely neutral: 91% of the page is painted in #FFFFFF and #F5F5F5; #E7B75F (8.2%) fills whole sections.
- #FFE01B is an accent: 0.6% of the page, as small fills such as buttons and badges. Keep it to small areas.
- #004E56 is an accent: 0.1% of the page, used for text only. Don't fill large areas with it.
- The largest type (64px Means Web) is regular weight, not bold (400), tracked to -0.019em.
- Open: text covers 11% of the page. Sections sit about 120px apart.
- Share of the painted page: #FFFFFF 60.3% (dominant, backgrounds); #F5F5F5 16.4% (dominant, backgrounds); #231E15 12.3% (dominant, backgrounds and text); #E7B75F 8.2% (dominant, backgrounds); #39352C 0.8% (detail, backgrounds); #241C15 0.7% (detail, backgrounds); #000000 0.6% (detail, text); #FFE01B 0.6% (accent, backgrounds and text). Keep accents at these proportions; do not promote them to fills.
- Hairline dividers: 1px lines in #231E15 separate sections and rows (11 of them).
- Large images: Photographs, video or raster artwork cover about 29% of the page.
- Type as set (size, weight and tracking measured together; use these pairs): 64px weight 400 tracking -0.019em; 48px weight 400 tracking -0.021em; 40px weight 400 tracking -0.012em; 32px weight 400; 23px weight 400; 20px weight 400.

1. DESIGN TOKENS — PASTE INTO YOUR GLOBAL CSS
Allowed colours, with how the original uses each. Use no other colour, including in hover states:
- #FFFFFF — 60.3% · backgrounds (var(--color-background))
- #F5F5F5 — 16.4% · backgrounds (var(--color-f5f5f5))
- #231E15 — 12.3% · backgrounds, text (var(--color-action))
- #E7B75F — 8.2% · backgrounds (var(--color-e7b75f))
- #39352C — 0.8% · backgrounds (var(--color-39352c))
- #241C15 — 0.7% · backgrounds (var(--color-241c15))
- #000000 — 0.6% · text (var(--color-text))
- #FFE01B — 0.6% · backgrounds, text (var(--color-warning))
- #004E56 — 0.1% · text (var(--color-link))
- #BCBAB6 — hairlines and grid lines
- #DEDEDE — Surface (var(--color-surface))
- #575757 — Text muted (var(--color-text-muted))
- #007C89 — Positive (var(--color-positive))
Fonts — put these first in your global CSS (one import per font, so one that fails cannot stop the others):
```css
@import url("https://fonts.googleapis.com/css2?family=Inter+Tight:wght@200;400;500;600;700&display=swap");
@import url("https://fonts.googleapis.com/css2?family=Source+Serif+4:wght@400&display=swap");
```
Font: mailchimp.com uses Graphik Web (body) and Means Web (display) — its own licensed faces, not available to download. This kit uses Inter Tight for body and Source Serif 4 for display, the closest free matches, already in the tokens. If you own the original, add it with @font-face and it is used first; to use another font, change the --font-* variables.
Keep every size, weight, line height and tracking exactly as listed whichever font renders.
```css
:root {
  --color-background: #FFFFFF; /* Background */
  --color-surface: #DEDEDE; /* Surface */
  --color-text: #000000; /* Text */
  --color-text-muted: #575757; /* Text muted */
  --color-border: #DEDEDE; /* Border */
  --color-action: #231E15; /* Action */
  --color-on-action: #FFFFFF; /* On action */
  --color-link: #004E56; /* Link */
  --color-positive: #007C89; /* Positive */
  --color-warning: #FFE01B; /* Warning */
  --color-f5f5f5: #F5F5F5; /* 16.4% of the page, as fills */
  --color-e7b75f: #E7B75F; /* 8.2% of the page, as fills */
  --color-39352c: #39352C; /* 0.8% of the page, as fills */
  --color-241c15: #241C15; /* 0.7% of the page, as fills */
  --font-body: "Graphik Web", "Inter Tight", sans-serif; /* Graphik Web on the site; Inter Tight renders */
  --font-display: "Means Web", "Source Serif 4", serif; /* Means Web on the site; Source Serif 4 renders */
  --font-interface: "Arial", sans-serif; /* Arial */
  --type-display-large: 64px; /* Display Large, weight 400 */
  --type-display-large-leading: 76.8px;
  --type-display-large-tracking: -0.019em;
  --type-display-medium: 48px; /* Display Medium, weight 400 */
  --type-display-medium-leading: 48px;
  --type-display-medium-tracking: -0.021em;
  --type-display-small: 40px; /* Display Small, weight 400 */
  --type-display-small-leading: 40px;
  --type-display-small-tracking: -0.012em;
  --type-headline: 32px; /* Headline, weight 400 */
  --type-headline-leading: normal;
  --type-title-large: 23px; /* Title Large, weight 400 */
  --type-title-large-leading: 30px;
  --type-title-small: 20px; /* Title Small, weight 400 */
  --type-title-small-leading: 32px;
  --type-body-large: 16px; /* Body Large, weight 400 */
  --type-body-large-leading: 21.6px;
  --type-body-medium: 15px; /* Body Medium, weight 500 */
  --type-body-medium-leading: normal;
  --type-body-small: 14px; /* Body Small, weight 400 */
  --type-body-small-leading: 21px;
  --type-label-large: 13px; /* Label Large, weight 400 */
  --type-label-large-leading: 17.55px;
  --type-label-medium: 12px; /* Label Medium, weight 200 */
  --type-label-medium-leading: 18px;
  --type-label-small: 11px; /* Label Small, weight 400 */
  --type-label-small-leading: 16px;
  --space-4: 4px;
  --space-8: 8px;
  --space-12: 12px;
  --space-16: 16px;
  --space-20: 20px;
  --space-24: 24px;
  --space-32: 32px;
  --space-40: 40px;
  --space-48: 48px;
  --space-52: 52px;
  --space-56: 56px;
  --space-60: 60px;
  --space-64: 64px;
  --space-68: 68px;
  --space-72: 72px;
  --space-80: 80px;
  --space-124: 124px;
  --radius-xs: 1px;
  --radius-sm: 2px;
  --radius-md: 3px;
  --radius-lg: 4px;
  --radius-xl: 8px;
  --radius-2xl: 10px;
  --radius-3xl: 14px;
  --radius-full: 9999px;
  --radius-16: 16px; /* component radius */
  --radius-24: 24px; /* component radius */
  --radius-26: 26px; /* component radius */
  --radius-40: 40px; /* component radius */
  --elevation-1: rgb(255, 255, 255) 0px 0px 0px 0px;
  --elevation-2: rgb(35, 30, 21) 0px 0px 0px 1px;
  --elevation-3: rgb(140, 140, 140) 0px 0px 0px 1px inset;
  --elevation-4: rgb(35, 30, 21) 0px 0px 0px 1px, rgb(35, 30, 21) 0px 3.25px 0px 0px;
  --elevation-5: rgba(35, 30, 21, 0.05) 0px 2px 8px 0px;
  --elevation-6: rgb(199, 197, 199) 0px 0px 12px 2px;
  --elevation-7: rgba(36, 28, 21, 0.12) 0px 4px 12px 0px;
  --elevation-8: rgba(0, 0, 0, 0.2) 0px 0px 18px 0px;
  --elevation-9: rgba(0, 0, 0, 0.06) 0px 4px 16px 0px;
  --elevation-10: rgba(35, 30, 21, 0.15) 0px 0px 20px 3px;
  --elevation-11: rgba(35, 30, 21, 0.2) 0px 8px 32px 0px;
  --elevation-12: rgba(0, 0, 0, 0.086) 0px 15.547px 44px 0px;
  --elevation-13: rgba(35, 30, 21, 0.12) 0px 20px 60px 0px;
  --duration-1: 0.15s;
  --duration-2: 0.2s;
  --duration-3: 0.3s;
  --duration-4: 0.32s;
  --duration-5: 0.5s;
  --ease-1: cubic-bezier(0, 0, 0, 1);
  --ease-2: ease-in-out;
  --ease-3: cubic-bezier(0.5, 2.5, 0.7, 0.7);
  --ease-4: linear;
}
```
Tailwind CSS v4 (the default for new projects): put this after `@import "tailwindcss";`. It removes Tailwind's own palette, so only these colours exist as utilities:
```css
@theme {
  --color-*: initial;
  --color-background: #FFFFFF;
  --color-surface: #DEDEDE;
  --color-text: #000000;
  --color-text-muted: #575757;
  --color-border: #DEDEDE;
  --color-action: #231E15;
  --color-on-action: #FFFFFF;
  --color-link: #004E56;
  --color-positive: #007C89;
  --color-warning: #FFE01B;
  --color-f5f5f5: #F5F5F5;
  --color-e7b75f: #E7B75F;
  --color-39352c: #39352C;
  --color-241c15: #241C15;
  --font-body: "Graphik Web", "Inter Tight", sans-serif;
  --font-display: "Means Web", "Source Serif 4", serif;
  --font-interface: "Arial", sans-serif;
  --text-display-large: 64px;
  --text-display-large--line-height: 76.8px;
  --text-display-large--letter-spacing: -0.019em;
  --text-display-medium: 48px;
  --text-display-medium--line-height: 48px;
  --text-display-medium--letter-spacing: -0.021em;
  --text-display-small: 40px;
  --text-display-small--line-height: 40px;
  --text-display-small--letter-spacing: -0.012em;
  --text-headline: 32px;
  --text-title-large: 23px;
  --text-title-large--line-height: 30px;
  --text-title-small: 20px;
  --text-title-small--line-height: 32px;
  --text-body-large: 16px;
  --text-body-large--line-height: 21.6px;
  --text-body-medium: 15px;
  --text-body-small: 14px;
  --text-body-small--line-height: 21px;
  --text-label-large: 13px;
  --text-label-large--line-height: 17.55px;
  --text-label-medium: 12px;
  --text-label-medium--line-height: 18px;
  --text-label-small: 11px;
  --text-label-small--line-height: 16px;
  --radius-xs: 1px;
  --radius-sm: 2px;
  --radius-md: 3px;
  --radius-lg: 4px;
  --radius-xl: 8px;
  --radius-2xl: 10px;
  --radius-3xl: 14px;
  --radius-full: 9999px;
  --shadow-e1: rgb(255, 255, 255) 0px 0px 0px 0px;
  --shadow-e2: rgb(35, 30, 21) 0px 0px 0px 1px;
  --shadow-e3: rgb(140, 140, 140) 0px 0px 0px 1px inset;
  --shadow-e4: rgb(35, 30, 21) 0px 0px 0px 1px, rgb(35, 30, 21) 0px 3.25px 0px 0px;
  --shadow-e5: rgba(35, 30, 21, 0.05) 0px 2px 8px 0px;
  --shadow-e6: rgb(199, 197, 199) 0px 0px 12px 2px;
  --shadow-e7: rgba(36, 28, 21, 0.12) 0px 4px 12px 0px;
  --shadow-e8: rgba(0, 0, 0, 0.2) 0px 0px 18px 0px;
  --shadow-e9: rgba(0, 0, 0, 0.06) 0px 4px 16px 0px;
  --shadow-e10: rgba(35, 30, 21, 0.15) 0px 0px 20px 3px;
  --shadow-e11: rgba(35, 30, 21, 0.2) 0px 8px 32px 0px;
  --shadow-e12: rgba(0, 0, 0, 0.086) 0px 15.547px 44px 0px;
  --shadow-e13: rgba(35, 30, 21, 0.12) 0px 20px 60px 0px;
  --ease-1: cubic-bezier(0, 0, 0, 1);
  --ease-2: ease-in-out;
  --ease-3: cubic-bezier(0.5, 2.5, 0.7, 0.7);
  --ease-4: linear;
}
```
Tailwind CSS v3 only: extend the theme with these instead, and use no other palette:
```js
// tailwind.config — theme.extend
{
  colors: { "background": "var(--color-background)", "surface": "var(--color-surface)", "text": "var(--color-text)", "text-muted": "var(--color-text-muted)", "border": "var(--color-border)", "action": "var(--color-action)", "on-action": "var(--color-on-action)", "link": "var(--color-link)", "positive": "var(--color-positive)", "warning": "var(--color-warning)" },
  fontFamily: { "body": ["var(--font-body)"], "display": ["var(--font-display)"], "interface": ["var(--font-interface)"] },
  borderRadius: { "xs": "var(--radius-xs)", "sm": "var(--radius-sm)", "md": "var(--radius-md)", "lg": "var(--radius-lg)", "xl": "var(--radius-xl)", "2xl": "var(--radius-2xl)", "3xl": "var(--radius-3xl)", "full": "var(--radius-full)" },
  boxShadow: { "e1": "var(--elevation-1)", "e2": "var(--elevation-2)", "e3": "var(--elevation-3)", "e4": "var(--elevation-4)", "e5": "var(--elevation-5)", "e6": "var(--elevation-6)", "e7": "var(--elevation-7)", "e8": "var(--elevation-8)", "e9": "var(--elevation-9)", "e10": "var(--elevation-10)", "e11": "var(--elevation-11)", "e12": "var(--elevation-12)", "e13": "var(--elevation-13)" },
}
```

2. BASE STYLES
```css
html { background: var(--color-background); }
body { margin: 0; font-family: var(--font-body); font-size: var(--type-body-large); line-height: var(--type-body-large-leading); color: var(--color-text); -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
h1, h2, h3 { font-family: var(--font-display); margin: 0; }
a { color: var(--color-link); }
:focus-visible { outline: 2px solid var(--color-action); outline-offset: 2px; }
```

3. COMPONENTS — MATCH THESE EXACTLY
```css
.card { /* Default */
  background: var(--color-background);
  border-radius: var(--radius-16);
  padding: var(--space-48);
  box-shadow: var(--elevation-11);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--type-body-large);
  font-weight: 400;
  line-height: 21.6px;
}
.card-2 { /* Alternative 1 */
  background: var(--color-background);
  border-radius: var(--radius-24);
  min-height: 482px;
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--type-body-large);
  font-weight: 400;
  line-height: 21.6px;
}
.card-3 { /* Alternative 2 */
  background: var(--color-f5f5f5);
  border-radius: 2px 0px 0px 2px;
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--type-body-large);
  font-weight: 400;
  line-height: 21.6px;
}
.link { /* Inline */
  background: transparent;
  border-radius: var(--radius-16);
  padding: var(--space-16);
  box-shadow: var(--elevation-12);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--type-body-large);
  font-weight: 400;
  line-height: 21.6px;
  /* recorded states: hover, focus-visible */
}
.link-3 { /* Inline 3 */
  background: transparent;
  border-radius: var(--radius-26);
  padding: 12px 24px 12px 24px;
  min-height: 44px;
  box-shadow: var(--elevation-2);
  color: #231E15;
  font-family: var(--font-body);
  font-size: var(--type-label-large);
  font-weight: 500;
  line-height: 19.5px;
  /* recorded states: hover, active, focus, focus-visible */
}
.button { /* Primary */
  background: var(--color-action);
  border-radius: var(--radius-full);
  padding: 16px 24px 16px 24px;
  min-height: 56px;
  color: var(--color-on-action);
  font-family: var(--font-body);
  font-size: var(--type-body-large);
  font-weight: 600;
  line-height: 24px;
  /* recorded states: selected, hover, focus-visible */
}
.button-2 { /* Secondary */
  background: var(--color-241c15);
  border: 1px solid #FFFFFF;
  padding: 12px 30px 12px 30px;
  min-height: 31px;
  color: #FFFFFF;
  font-family: var(--font-body);
  font-size: var(--type-label-small);
  font-weight: 200;
  line-height: 5px;
  /* recorded states: hover, focus */
}
.button-3 { /* Secondary 2 */
  background: var(--color-warning);
  border-radius: var(--radius-40);
  padding: 12px 24px 12px 24px;
  min-height: 48px;
  box-shadow: var(--elevation-2);
  color: #231E15;
  font-family: var(--font-body);
  font-size: var(--type-body-medium);
  font-weight: 600;
  line-height: 24px;
  /* recorded states: hover, active, focus, focus-visible */
}
.nav { /* Default */
  background: transparent;
  padding: 12px 16px 12px 16px;
  min-height: 68px;
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--type-body-large);
  font-weight: 400;
  line-height: 21.6px;
  /* recorded states: hover */
}
.input { /* Default */
  background: var(--color-background);
  border: 2px solid #DEDEDE;
  border-radius: var(--radius-lg);
  min-height: 24px;
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--type-body-large);
  font-weight: 400;
  line-height: 18.4px;
  /* recorded states: hover, focus, disabled */
}
.input-2 { /* Alternative 1 */
  background: transparent;
  padding: 8px 48px 8px 0px;
  min-height: 44px;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 400;
  /* recorded states: active */
}
.input-3 { /* Alternative 2 */
  background: transparent;
  padding: 10px 10px 10px 10px;
  min-height: 39px;
  color: #231E15;
  font-family: var(--font-body);
  font-size: var(--type-body-small);
  font-weight: 500;
  line-height: 18.6666px;
  /* recorded states: active */
}
```
Where a component lists recorded states, write those states using only the colours above; the capture saw that the state exists, not its values. Never invent a state colour.

4. PAGE COMPOSITION
- Light interface on #FFFFFF. Keep that ground; do not add a dark mode.
- The opening screen carries a large image or video on the left. Leave a [content: hero image or video] slot there, at least half the screen wide; the opening is not text alone.
- Sections change ground between Action (#231E15), #EDEDED, #39352C and #241C15; use only those.
- #231E15 is the action colour. Fill the primary action with it and little else — at most one #231E15-filled element per screen; other accents keep to the uses listed above.
- Type: Inter Tight (standing in for Graphik Web) for body; Source Serif 4 (standing in for Means Web) for display; Arial for interface. Hierarchy comes from size and weight, not colour or decoration.
- Corner radii are 1px, 2px, 3px, 4px, 8px, 10px, 14px, fully round (pill) — nothing else.
- Body text uses Graphik Web at around 16px, weights 200, 400, 500, 600, 700.
- Headings use Means Web; the largest heading is 64px.
- Primary buttons are #231E15, square-cornered, weight 400.
- Cards use 24px corners.
- Corner radii in use: 4px, 3px, 16px, 26px, 2px.

HOW THE ORIGINAL PACES ITS PAGE (BORROW THE RHYTHM — THE OPENING, THE COLOURED BANDS, THE CARD GRIDS — NOT THE LIST; BUILD THE SECTIONS YOUR PRODUCT NEEDS)
1. Hero — 68px tall, left-aligned 16px heading (weight 400), image on the left.
2. Text — 96px tall, left-aligned 16px heading (weight 500), on #39352C.
3. Split — 1208px tall, 2 equal columns, 16px gap, left-aligned 40px heading (weight 400), image on the left.
4. Cards — 1288px tall, 3 equal columns, 4px gap, centred 40px heading (weight 400), image centred.
5. Split — 195px tall, 2 equal columns, image centred, on #FFFFFF.
6. Text — 380px tall, left-aligned 40px heading (weight 400), on #FFFFFF.
7. Split — 536px tall, split 8 / 4, 77px gap, left-aligned 48px heading (weight 400), on #F5F5F5.
8. Statement — 324px tall, centred 40px heading (weight 400), on #231E15.
9. Text — 176px tall, left-aligned 11px heading (weight 500), on #F5F5F5.
10. Footer — 1041px tall, split 2 / 2 / 3 / 2 / 3, 93px gap, left-aligned 16px heading (weight 400), on #E7B75F.
- Content sits in a 1280px container, 118px from the edge at 1440px wide.
- The hero is 68px (0.1 screens): left-aligned 16px heading (weight 400), image on the left.
- Column splits on a 12-column grid: halves (2×), thirds, 8/4, 2/2/3/2/3; gaps of 77px.
- Headings align left (7 of 9 sections); centre only the occasional statement.
- Sections change background 7 times, between #39352C, #FFFFFF, #F5F5F5: colour comes in full-width bands; #FFFFFF is large rounded panels inside a section instead.
- A typical section is about 380px tall.

COPY SHAPE (MATCH THE LENGTH AND CASE; WRITE YOUR OWN WORDS)
- The main heading is 8 words long.
- Section headings are medium length: typically 7 words.
- Headings are in sentence case (only the first word capitalised).
- The page describes itself in about 19 words; keep your intro paragraph to about that length.

5. MOTION
Interactive elements change colour, background, border and opacity with the measured timing. Animate nothing else.
```css
a, button, [role="button"], input { transition: color var(--duration-1) var(--ease-1), background-color var(--duration-1) var(--ease-1), border-color var(--duration-1) var(--ease-1), opacity var(--duration-1) var(--ease-1); }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}
```
No scroll-triggered fade-ins, parallax, typewriter text or bouncing elements.

6. RESPONSIVE
- The design was measured at 1440px wide. Lay it out for that width first, then let it reflow down to 360px.
- Content sits in a column at most 1280px wide, centred, with var(--space-16) (16px) side padding on small screens.
- The largest heading scales fluidly: font-size: clamp(32px, 4.4vw, 64px). Every other size stays fixed.
- Break on composition, not device names: a row of columns drops a column when any column would be narrower than 240px; side-by-side splits stack when either side would be narrower than 320px.
- Spacing steps never change between sizes; use smaller steps from the same list where space is tight.
- On touch screens, every link and button has a hit area of at least 44 × 44px without changing its drawn size.

7. ACCESSIBILITY
- Text pairs that pass for body copy: Text on Background (21:1), Text muted on Background (7.2:1), Action on Background (16.6:1), Link on Background (9.4:1), Positive on Background (4.9:1), Text on Surface (15.6:1), Text muted on Surface (5.4:1), Action on Surface (12.3:1), Link on Surface (7:1) and On action on Action (16.6:1).
- Only for text 24px and up, or 18.66px bold: Positive on Surface (3.7:1).
- Use no other text-on-background pairing.
- One h1 per page, headings in order, landmarks (header, nav, main, footer), real buttons and links, a label on every field, alt text on every image, an aria-label on icon-only buttons.
- Every interactive element shows the :focus-visible outline above.

8. DO NOT (THESE ARE WHAT MAKE AI-BUILT SITES LOOK GENERIC)
- No gradients: not in backgrounds, text, buttons or borders. (No gradient was measured.)
- Only these colours: #FFFFFF, #F5F5F5, #231E15, #E7B75F, #39352C, #241C15, #000000, #FFE01B, #004E56, #BCBAB6, #DEDEDE, #575757, #007C89. No new tints, no Tailwind defaults (slate, indigo, violet). (They are every colour that covers a measurable part of the page, and the colours its lines and drawings use.)
- #FFE01B only as small fills (buttons, badges) — never a section background or a large panel. (It covers 0.6% of the page.)
- #004E56 only for text — never as a section background or a large panel. (It covers 0.1% of the page.)
- Only the fonts in the tokens: Inter Tight for body; Source Serif 4 for display; Arial for interface. No other typeface, and no Inter, Roboto or system UI font unless it is one of these. (The page is set in Means Web and Graphik Web and Arial; the tokens carry what stands in for them.)
- Headings and large text never heavier than weight 400. Do not make headlines bold to add emphasis. (Every size from 24px up is set at weight 400 or lighter.)
- Large headlines tracked tight (letter-spacing -0.019em), not at the browser default. (The 64px headline is set at -0.019em.)
- No all-caps eyebrow labels above headings. (No uppercase text was measured.)
- No icon above every feature, no emoji, no decorative blobs, sparkles or glows. (None of these is part of the captured design; they are a coding model's defaults.)
- The hero is left-aligned. Do not centre it. (The captured hero sets its heading on the left.)
- Build the sections your product needs, not the original's list. Give each one this system's look: its kinds of section (hero, text, split, cards, statement, footer), its colours, type, shapes and spacing. (The style carries to any kind of site; the original's page was for a different product.)
- No glassmorphism, backdrop blur, glowing orbs, noise blobs or neon outlines.
- No row of three identical feature cards as the default section. Vary the layout from section to section: a split, a list, a single large statement, a table.
- No centred-everything hero with a pill badge, a gradient headline and two buttons. Lead with the most specific thing about the product.
- No filler copy: no "Unlock your potential", "Revolutionize", "Seamless", "Elevate", "Supercharge", "Next-gen" or lorem ipsum. Write plain, specific sentences a real company would publish.
- No made-up statistics, testimonials or customer logos. Leave a clearly marked [content: …] slot instead.
- No radius larger than the largest one listed.
- No shadows other than the levels listed.
- Do not use mailchimp.com's name, logo, copy or images. This is its design system, not its content.

BEFORE YOU FINISH
- Search your code for every colour, font size, spacing value, radius, shadow and easing, and replace anything that is not a variable above.
- Check that no [content: …] slot has been filled with invented facts.
- Search your CSS for gradient(. There should be none.
- Every colour value in your CSS is one of the allowed colours. Nothing else, including in hover states.
- #FFE01B covers about 0.6% of the page or less, as on the original.
- #004E56 covers about 0.1% of the page or less, as on the original.
- No text 24px or larger has a font-weight above 400.
- The largest headline uses letter-spacing -0.019em.
- Every section, including ones the original does not have, uses only this system's colours, type, shapes and spacing.
- Content sits in a 1280px container with 118px side margins at 1440px.
- There is no placeholder copy (lorem ipsum, "Feature one", "Your headline here"). Every word is real.
- Take a screenshot at 1440px and put it beside the original. List every difference in colour, weight, spacing, alignment and imagery, and fix each before finishing. Then check 390px wide: nothing scrolls sideways and no heading runs off the screen.