CalcFormula

# Design Brief: Precision Swiss Grid (with Enterprise Clean)

Exposed 1px hairline grid rules with intersection crosshairs, modular bento cards, and strict geometric alignment with modern engineering craft.

## Design Tokens

```css
:root {
  --background: #0f172a;
  --surface: #ffffff;
  --foreground: #ffffff;
  --muted-foreground: #94a3b8;
  --accent: #c2410c;
  --radius: 8px;
  --font-heading: "Charter", ui-sans-serif, system-ui, sans-serif;
  --font-body: "-apple-system", ui-sans-serif, system-ui, sans-serif;
  --font-mono: "Charter", ui-sans-serif, system-ui, sans-serif;
}
```

Color area ratio: Background #0F172A (~48%) · Surface #FFFFFF (~38%) · Text #FFFFFF (~7%) · Muted Text #94A3B8 (~4%) · Accent #C2410C (~3%). Background and surface dominate the canvas; reserve the accent color for primary buttons and active states.

## Layout & Conversion Structure

- Hero layout: Centered Headline + Input
- Navigation: Full-Width Top Bar
- Theme & density: Dark · Balanced
- Border radius & elevation: Medium Radius; no drop shadows—separate layers with hairline borders and whitespace
- Primary visual medium: Pure Typography & Geometry
- Conversion CTA: Direct Input / Instant Try
- Headline hook: Category Positioning Anchor
- Hero components: Centered Prompt / Input, Bento Grid
- Spatial layout notes: Centered Headline + Input hero structure paired with direct input / instant try CTA and no explicit trust bar.
- Visual summary: Precision Swiss Grid (Dark canvas, balanced density) featuring centered headline + input layout and pure typography & geometry visuals.

## Avoid

- Soft organic blobs
- Misaligned freeform floating elements
- Heavy drop shadows that obscure grid hairlines

Implement the UI following the design tokens and layout specifications above: use only these color variables, and reserve the accent color strictly for primary actions and active states. Adopt only this visual style—never copy any reference product’s brand name, logo, copy, or imagery.