Douban Book+

# Design Brief: Hand-Drawn & Sketch (with Soft & Friendly)

Handwritten display accents, doodle annotations, and sketch-style illustrations.

## Design Tokens

```css
:root {
  --background: #ffffff;
  --surface: #f4f7fc;
  --foreground: #20242b;
  --muted-foreground: #8a9099;
  --accent: #2e72be;
  --radius: 8px;
  --font-heading: "Ma Shan Zheng", ui-sans-serif, system-ui, sans-serif;
  --font-body: "PingFang SC", ui-sans-serif, system-ui, sans-serif;
}
```

Color area ratio: Background #FFFFFF (~78%) · Surface #F4F7FC (~9%) · Text #20242B (~6%) · Muted Text #8A9099 (~4%) · Accent #2E72BE (~3%). Background and surface dominate the canvas; reserve the accent color for primary buttons and active states.

## Layout & Conversion Structure

- Hero layout: Centered Headline + CTA
- Navigation: Full-Width Top Bar
- Theme & density: Light · Balanced
- Border radius & elevation: Medium Radius; no drop shadows—separate layers with hairline borders and whitespace
- Primary visual medium: Product UI Screenshot / Component
- Conversion CTA: Download App / Install Extension · Trust bar uses User Count, Rating, or Key Metrics
- Headline hook: Direct Action Command
- Hero components: Metrics Strip, Large Hero Product Shot
- Spatial layout notes: Centered Headline + CTA hero structure paired with download app / install extension CTA and user count, rating, or key metrics.
- Visual summary: Hand-Drawn & Sketch (Light canvas, balanced density) featuring centered headline + cta layout and product ui screenshot / component visuals.

## Avoid

- Rigid corporate stock photography
- Heavy 3D metallic renders
- Overly dense enterprise dashboards

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.