UTern

# Design Brief: Soft & Friendly (with Gradient Glow)

Warm low-saturation pastels, generous rounded corners, and approachable illustrations.

## Design Tokens

```css
:root {
  --background: #173b67;
  --surface: #ffffff;
  --foreground: #ffffff;
  --muted-foreground: #c6cfdc;
  --accent: #2764e8;
  --radius: 16px;
  --font-heading: "现代几何无衬线体", ui-sans-serif, system-ui, sans-serif;
  --font-body: "现代无衬线体", ui-sans-serif, system-ui, sans-serif;
}
```

Color area ratio: Background #173B67 (~78%) · Surface #FFFFFF (~8%) · Text #FFFFFF (~8%) · Muted Text #C6CFDC (~3%) · Accent #2764E8 (~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 · Airy
- Border radius & elevation: Large Radius; use elevation shadows to separate layers
- Primary visual medium: Photography / Live Video
- Conversion CTA: Direct Input / Instant Try
- Headline hook: Target Audience Callout
- Hero components: Centered Prompt / Input
- Spatial layout notes: Centered Headline + Input hero structure paired with direct input / instant try CTA and no explicit trust bar.
- Visual summary: Soft & Friendly (Dark canvas, airy density) featuring centered headline + input layout and photography / live video visuals.

## Avoid

- Harsh pure-black backgrounds
- Sharp 0px corners
- Cold technical jargon in hero copy

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.