# DESIGN.md: Neon-style design system

Measured from https://neon.com/ on 2026-10-15 by PikSpec (https://www.pikspec.com). An independent measurement of the rendered page, not Neon's official design system, and not affiliated with Neon.

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 neon.tech, measured from the live site: it should feel designed by the same team as neon.tech — the same temperament, colour, type and density — for a different product. Never use neon.tech'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://neon.com/ — "neon.com" (home page).
- Page frame: a top navigation bar and a footer.
- Content is grouped in cards (7 on the page). Keep cards for grouped content only, not for every section.
- It uses 417 images including 16 videos, 27 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: 33 buttons on one page.
- The page runs about 12 screens long at 1440px wide.
- Density is low: few elements per screen, generous space around each one.

HOW IT LOOKS (WHAT MAKES IT LOOK LIKE ITSELF, BEYOND THE VALUES)
- Almost entirely neutral: 99% of the page is painted in #000000 and #E4F1EB.
- #34D59A is an accent: under 0.1% of the page, as small fills such as buttons and badges. Keep it to small areas.
- #00E599 is an accent: under 0.1% of the page, as small fills such as buttons and badges. Keep it to small areas.
- The largest type (128px GeistMono) is regular weight, not bold (400), tracked to -0.04em.
- Balanced: text covers 13% of the page. Sections sit about 64px apart.
- Structure comes from thin grid lines, not from shadows or filled cards.
- Share of the painted page: #000000 72% (dominant, backgrounds); #E4F1EB 9.4% (supporting, backgrounds); #18191B 6.9% (supporting, backgrounds); #151617 3% (detail, backgrounds); #FFFFFF 1.9% (supporting, text); #797D86 1.3% (supporting, text); #CDDFD7 1.3% (detail, backgrounds); #111315 0.8% (detail, backgrounds). Keep accents at these proportions; do not promote them to fills.
- Hairline grid: 1px lines in #242628 run both across and down the page (23 across, 9 down), dividing it into cells instead of cards.
- Small marks: 16 small decorative marks (dots, crosses or ticks under 16px) in #61646B and #FF3621, placed at corners and edges.
- Large images: Photographs, video or raster artwork cover about 42% of the page.
- Type as set (size, weight and tracking measured together; use these pairs): 128px weight 400 tracking -0.04em; 98px weight 400 tracking -0.02em; 80px weight 400 tracking -0.02em; 72px weight 400 tracking -0.04em; 64px weight 400 tracking -0.04em; 56px weight 400 tracking -0.04em.

1. DESIGN TOKENS — PASTE INTO YOUR GLOBAL CSS
Allowed colours, with how the original uses each. Use no other colour, including in hover states:
- #000000 — 72% · backgrounds (var(--color-background))
- #E4F1EB — 9.4% · backgrounds (var(--color-e4f1eb))
- #18191B — 6.9% · backgrounds (var(--color-surface))
- #151617 — 3% · backgrounds (var(--color-151617))
- #FFFFFF — 1.9% · text (var(--color-text))
- #797D86 — 1.3% · text
- #CDDFD7 — 1.3% · backgrounds (var(--color-cddfd7))
- #111315 — 0.8% · backgrounds (var(--color-111315))
- #0D221A — 0.6% · backgrounds (var(--color-0d221a))
- #131415 — 0.6% · backgrounds (var(--color-131415))
- #242628 — hairlines and grid lines
- #494B50 — hairlines and grid lines
- #303236 — hairlines and grid lines (var(--color-border))
- #61646B — hairlines and grid lines
- #FF3621 — small marks (var(--color-negative))
- #94979E — small marks (var(--color-text-muted))
- #C9CBCF — small marks
- #CAE6DC — 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:wght@400;500;600&display=swap");
@import url("https://fonts.googleapis.com/css2?family=Geist+Mono:wght@400;500;600&display=swap");
```
Inter and GeistMono (Google's Geist Mono) are on Google Fonts and loaded from there.
Keep every size, weight, line height and tracking exactly as listed whichever font renders.
```css
:root {
  --color-background: #000000; /* Background */
  --color-surface: #18191B; /* Surface */
  --color-text: #FFFFFF; /* Text */
  --color-text-muted: #94979E; /* Text muted */
  --color-border: #303236; /* Border */
  --color-action: #303236; /* Action */
  --color-on-action: #FFFFFF; /* On action */
  --color-positive: #CAE6DC; /* Positive */
  --color-negative: #FF3621; /* Negative */
  --color-e4f1eb: #E4F1EB; /* 9.4% of the page, as fills */
  --color-151617: #151617; /* 3% of the page, as fills */
  --color-cddfd7: #CDDFD7; /* 1.3% of the page, as fills */
  --color-111315: #111315; /* 0.8% of the page, as fills */
  --color-0d221a: #0D221A; /* 0.6% of the page, as fills */
  --color-131415: #131415; /* 0.6% of the page, as fills */
  --font-body: "Inter", sans-serif; /* Inter */
  --font-code: "GeistMono", "Geist Mono", monospace; /* GeistMono on the site; Geist Mono renders */
  --type-display-1: 98px; /* Display 1, weight 400 */
  --type-display-1-leading: 98px;
  --type-display-1-tracking: -0.02em;
  --type-display-2: 80px; /* Display 2, weight 400 */
  --type-display-2-leading: 80px;
  --type-display-2-tracking: -0.02em;
  --type-display-3: 72px; /* Display 3, weight 400 */
  --type-display-3-leading: 72px;
  --type-display-3-tracking: -0.04em;
  --type-display-4: 64px; /* Display 4, weight 400 */
  --type-display-4-leading: 64px;
  --type-display-4-tracking: -0.04em;
  --type-display-5: 56px; /* Display 5, weight 400 */
  --type-display-5-leading: 63px;
  --type-display-5-tracking: -0.04em;
  --type-display-6: 52px; /* Display 6, weight 400 */
  --type-display-6-leading: 58.5px;
  --type-display-6-tracking: -0.04em;
  --type-display-7: 44px; /* Display 7, weight 400 */
  --type-display-7-leading: 49.5px;
  --type-display-7-tracking: -0.04em;
  --type-display-8: 36px; /* Display 8, weight 400 */
  --type-display-8-leading: 40.5px;
  --type-display-8-tracking: -0.04em;
  --type-headline-large: 32px; /* Headline Large, weight 400 */
  --type-headline-large-leading: 40px;
  --type-headline-large-tracking: -0.04em;
  --type-headline-medium: 28px; /* Headline Medium, weight 400 */
  --type-headline-medium-leading: 35px;
  --type-headline-medium-tracking: -0.02em;
  --type-headline-small: 24px; /* Headline Small, weight 400 */
  --type-headline-small-leading: 36px;
  --type-headline-small-tracking: -0.02em;
  --type-title-large: 20px; /* Title Large, weight 400 */
  --type-title-large-leading: 25px;
  --type-title-large-tracking: -0.02em;
  --type-title-small: 18px; /* Title Small, weight 400 */
  --type-title-small-leading: 22.5px;
  --type-title-small-tracking: -0.02em;
  --type-body-large: 16px; /* Body Large, weight 400 */
  --type-body-large-leading: 20px;
  --type-body-large-tracking: -0.02em;
  --type-body-medium: 15px; /* Body Medium, weight 400 */
  --type-body-medium-leading: 15px;
  --type-body-medium-tracking: -0.02em;
  --type-body-small: 14px; /* Body Small, weight 500 */
  --type-body-small-leading: 14px;
  --type-body-small-tracking: -0.02em;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-7: 28px;
  --space-8: 32px;
  --space-9: 36px;
  --space-10: 40px;
  --space-11: 44px;
  --space-12: 48px;
  --space-14: 56px;
  --space-16: 64px;
  --space-20: 80px;
  --space-22: 88px;
  --space-23: 92px;
  --space-24: 96px;
  --space-32: 128px;
  --space-35: 140px;
  --space-40: 160px;
  --radius-sm: 4px;
  --radius-md: 5px;
  --radius-lg: 10px;
  --radius-full: 9999px;
  --elevation-1: rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, lab(100 -0.0000298023 0.0000119209 / 0.05) 0px 0px 0px 1px, rgba(0, 0, 0, 0) 0px 0px 0px 0px;
  --elevation-2: rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgb(48, 50, 54) 0px 0px 0px 1px inset, rgba(0, 0, 0, 0) 0px 0px 0px 0px;
  --elevation-3: rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0.4) 0px 8px 20px 0px;
  --duration-1: 0.15s;
  --duration-2: 0.2s;
  --duration-3: 0.3s;
  --ease-1: cubic-bezier(0.4, 0, 0.2, 1);
}
```
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: #000000;
  --color-surface: #18191B;
  --color-text: #FFFFFF;
  --color-text-muted: #94979E;
  --color-border: #303236;
  --color-action: #303236;
  --color-on-action: #FFFFFF;
  --color-positive: #CAE6DC;
  --color-negative: #FF3621;
  --color-e4f1eb: #E4F1EB;
  --color-151617: #151617;
  --color-cddfd7: #CDDFD7;
  --color-111315: #111315;
  --color-0d221a: #0D221A;
  --color-131415: #131415;
  --font-body: "Inter", sans-serif;
  --font-code: "GeistMono", "Geist Mono", monospace;
  --text-display-1: 98px;
  --text-display-1--line-height: 98px;
  --text-display-1--letter-spacing: -0.02em;
  --text-display-2: 80px;
  --text-display-2--line-height: 80px;
  --text-display-2--letter-spacing: -0.02em;
  --text-display-3: 72px;
  --text-display-3--line-height: 72px;
  --text-display-3--letter-spacing: -0.04em;
  --text-display-4: 64px;
  --text-display-4--line-height: 64px;
  --text-display-4--letter-spacing: -0.04em;
  --text-display-5: 56px;
  --text-display-5--line-height: 63px;
  --text-display-5--letter-spacing: -0.04em;
  --text-display-6: 52px;
  --text-display-6--line-height: 58.5px;
  --text-display-6--letter-spacing: -0.04em;
  --text-display-7: 44px;
  --text-display-7--line-height: 49.5px;
  --text-display-7--letter-spacing: -0.04em;
  --text-display-8: 36px;
  --text-display-8--line-height: 40.5px;
  --text-display-8--letter-spacing: -0.04em;
  --text-headline-large: 32px;
  --text-headline-large--line-height: 40px;
  --text-headline-large--letter-spacing: -0.04em;
  --text-headline-medium: 28px;
  --text-headline-medium--line-height: 35px;
  --text-headline-medium--letter-spacing: -0.02em;
  --text-headline-small: 24px;
  --text-headline-small--line-height: 36px;
  --text-headline-small--letter-spacing: -0.02em;
  --text-title-large: 20px;
  --text-title-large--line-height: 25px;
  --text-title-large--letter-spacing: -0.02em;
  --text-title-small: 18px;
  --text-title-small--line-height: 22.5px;
  --text-title-small--letter-spacing: -0.02em;
  --text-body-large: 16px;
  --text-body-large--line-height: 20px;
  --text-body-large--letter-spacing: -0.02em;
  --text-body-medium: 15px;
  --text-body-medium--line-height: 15px;
  --text-body-medium--letter-spacing: -0.02em;
  --text-body-small: 14px;
  --text-body-small--line-height: 14px;
  --text-body-small--letter-spacing: -0.02em;
  --radius-sm: 4px;
  --radius-md: 5px;
  --radius-lg: 10px;
  --radius-full: 9999px;
  --shadow-e1: rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, lab(100 -0.0000298023 0.0000119209 / 0.05) 0px 0px 0px 1px, rgba(0, 0, 0, 0) 0px 0px 0px 0px;
  --shadow-e2: rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgb(48, 50, 54) 0px 0px 0px 1px inset, rgba(0, 0, 0, 0) 0px 0px 0px 0px;
  --shadow-e3: rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0) 0px 0px 0px 0px, rgba(0, 0, 0, 0.4) 0px 8px 20px 0px;
  --ease-1: cubic-bezier(0.4, 0, 0.2, 1);
}
```
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)", "positive": "var(--color-positive)", "negative": "var(--color-negative)" },
  fontFamily: { "body": ["var(--font-body)"], "code": ["var(--font-code)"] },
  borderRadius: { "sm": "var(--radius-sm)", "md": "var(--radius-md)", "lg": "var(--radius-lg)", "full": "var(--radius-full)" },
  boxShadow: { "e1": "var(--elevation-1)", "e2": "var(--elevation-2)", "e3": "var(--elevation-3)" },
}
```

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-body); margin: 0; }
a { color: inherit; }
:focus-visible { outline: 2px solid var(--color-action); outline-offset: 2px; }
```

3. COMPONENTS — MATCH THESE EXACTLY
```css
.button { /* Primary */
  background: var(--color-action);
  border: 1px solid #494B50;
  padding: 0px 16px 0px 16px;
  min-height: 44px;
  color: var(--color-on-action);
  font-family: var(--font-body);
  font-size: var(--type-body-large);
  font-weight: 500;
  line-height: 16px;
  /* recorded states: focus-visible, hover */
}
.button-2 { /* Secondary */
  border-radius: var(--radius-full);
  padding: 0px 28px 0px 28px;
  min-height: 44px;
  color: #000000;
  font-family: var(--font-code);
  font-size: var(--type-body-large);
  font-weight: 500;
  line-height: 16px;
  /* recorded states: hover */
}
.button-3 { /* Secondary 2 */
  background: var(--color-background);
  padding: var(--space-4);
  box-shadow: var(--elevation-2);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--type-body-large);
  font-weight: 400;
  line-height: 24px;
}
.link { /* Inline */
  background: transparent;
  border-radius: var(--radius-sm);
  padding: 12px 4px 12px 4px;
  min-height: 66px;
  color: var(--color-text-muted);
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 400;
  line-height: 16.25px;
}
.link-2 { /* Inline 2 */
  background: transparent;
  border: 1px solid #61646B;
  border-radius: var(--radius-full);
  padding: 0px 18px 0px 18px;
  min-height: 36px;
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--type-body-small);
  font-weight: 500;
  line-height: 14px;
  /* recorded states: hover */
}
.link-3 { /* Inline 3 */
  background: transparent;
  border-radius: var(--radius-sm);
  padding: 0px 14px 0px 14px;
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--type-body-medium);
  font-weight: 400;
  line-height: 22.5px;
  /* recorded states: hover */
}
.card { /* Default */
  background: var(--color-111315);
  min-height: 259px;
  box-shadow: var(--elevation-1);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--type-body-large);
  font-weight: 400;
  line-height: 24px;
}
.card-2 { /* Alternative 1 */
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  min-height: 83px;
  color: #C9CBCF;
  font-family: var(--font-body);
  font-size: var(--type-body-large);
  font-weight: 400;
  line-height: 24px;
}
.card-3 { /* Alternative 2 */
  background: var(--color-111315);
  border: 1px solid var(--color-border);
  padding: var(--space-2);
  min-height: 90px;
  box-shadow: var(--elevation-3);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--type-body-large);
  font-weight: 400;
  line-height: 24px;
}
.nav { /* Default */
  background: transparent;
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--type-body-large);
  font-weight: 400;
  line-height: 24px;
}
```
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
- Dark interface on #000000. Keep that ground; do not add a light mode.
- The opening screen carries a large image or video behind or across the heading. 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 Background (#000000), #E4F1EB, Surface (#18191B) and #151617; use only those.
- #303236 is the action colour. Fill the primary action with it and little else — at most one #303236-filled element per screen; other accents keep to the uses listed above.
- Type: Inter for body; Geist Mono for code. Hierarchy comes from size and weight, not colour or decoration.
- Everything sits on a 4px grid.
- Corner radii are 4px, 5px, 10px, fully round (pill) — nothing else.
- Body text uses Inter at around 16px, weights 400, 500, 600.
- Headings use GeistMono; the largest heading is 128px.
- Primary buttons are #303236, square-cornered, weight 500.
- Cards use square corners with a soft shadow.
- Corner radii in use: 4px, 9999px (pill), 10px, 5px.

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 — 741px tall, left-aligned 56px heading (weight 400) set low in the band, image behind the content.
2. Grid — 638px tall, 5 items in 3 columns with 294px gaps, left-aligned 128px heading (weight 400), image on the right, on #000000.
3. Split — 1001px tall, split 8 / 4, 82px gap, left-aligned 128px heading (weight 400), image centred, on #000000.
4. Text — 159px tall, left-aligned 128px heading (weight 400).
5. Text — 977px tall, left-aligned 80px heading (weight 400) set mid-band, image on the right.
6. Statement — 1024px tall, centred 52px heading (weight 400), image on the left.
7. Full-bleed image — 1051px tall, left-aligned 98px heading (weight 400) set low in the band, image behind the content.
8. Split — 1186px tall, split 2 / 10, 128px gap, left-aligned 52px heading (weight 400), image centred, on #E4F1EB.
9. Text — 787px tall, left-aligned 36px heading (weight 400), image centred, on #18191B.
10. Cards — 750px tall, split 6 / 3 / 3, left-aligned 64px heading (weight 400) set low in the band, on #18191B.
11. Cards — 1040px tall, 4 equal columns, 16px gap, left-aligned 64px heading (weight 400), image on the right, on #E4F1EB.
12. Full-bleed image — 708px tall, left-aligned 72px heading (weight 400), image behind the content, on #151617.
13. Footer — 430px tall, split 4 / 8, 40px gap, left-aligned 15px heading (weight 400), on #000000.
- Content sits in a 1280px container, 32px from the edge at 1440px wide.
- A 64px header stays fixed at the top.
- The hero is 741px (0.8 screens): left-aligned 56px heading (weight 400) set low in the band, image behind the content.
- Column splits on a 12-column grid: thirds, 8/4, 2/10, 6/3/3; gaps of 40px.
- Headings align left (12 of 13 sections); centre only the occasional statement.
- Sections change background 7 times, between #000000, #E4F1EB, #18191B: colour comes in full-width bands, not in boxes.
- A typical section is about 977px tall.

COPY SHAPE (MATCH THE LENGTH AND CASE; WRITE YOUR OWN WORDS)
- The main heading is 12 words long.
- Section headings are long: typically 19 words.
- Headings are in sentence case (only the first word capitalised).
- The page describes itself in about 20 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 1176px wide, centred, with var(--space-4) (16px) side padding on small screens.
- The largest heading scales fluidly: font-size: clamp(56px, 6.8vw, 98px). 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), Positive on Background (15.9:1), Negative on Background (5.8:1), Text on Surface (17.6:1), Text muted on Surface (6:1), Positive on Surface (13.3:1), Negative on Surface (4.9:1) and On action on Action (12.8:1).
- 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: #000000, #E4F1EB, #18191B, #151617, #FFFFFF, #797D86, #CDDFD7, #111315, #0D221A, #131415, #242628, #494B50, #303236, #61646B, #FF3621, #94979E, #C9CBCF, #CAE6DC. 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.)
- #34D59A only as small fills (buttons, badges) — never a section background or a large panel. (It covers under 0.1% of the page.)
- #00E599 only as small fills (buttons, badges) — never a section background or a large panel. (It covers under 0.1% of the page.)
- Only the fonts in the tokens: Inter for body; Geist Mono for code. No other typeface, and no Inter, Roboto or system UI font unless it is one of these. (The page is set in Inter and GeistMono; 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 -0.04em), not at the browser default. (The 128px headline is set at -0.04em.)
- 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, low in the first screen.)
- Build the sections your product needs, not the original's list. Give each one this system's look: its kinds of section (hero, grid, split, text, statement, image, cards, 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 neon.tech'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.
- #34D59A covers about 0.1% of the page or less, as on the original.
- #00E599 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 -0.04em.
- 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 32px 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.