Awesome Design Md Jp

Awesome Design MD JP

Skill by ara.so — Daily 2026 Skills collection.

A curated collection of DESIGN.md files for Japanese web services, extending the Google Stitch DESIGN.md format with CJK typography, Japanese font stacks, kinsoku shori (禁則処理), and mixed typesetting (混植) rules — enabling AI agents to generate accurate Japanese UI.

What This Project Does

DESIGN.md is a plain-text markdown file AI coding agents read to generate consistent UI. This project extends that format for Japanese services, covering:

• CJK font-family fallback chains (和文 → 欧文 → generic)
• Higher line-height (1.5–2.0 vs Western 1.4–1.5)
• Japanese letter-spacing (0.04em–0.1em for body text)
• Kinsoku shori (禁則処理) — CJK punctuation line-break rules
• OpenType features (palt, kern) for proportional typesetting
• Mixed typesetting (混植) — combining Japanese and Latin typefaces

24 reference DESIGN.md files are included: Apple Japan, MUJI, Mercari, SmartHR, freee, note, LINE, Rakuten, Qiita, Zenn, pixiv, and more.

Installation / Setup

Clone or reference the repository directly — no build step required.

git clone https://github.com/kzhrknt/awesome-design-md-jp.git
cd awesome-design-md-jp

Copy the template into your project:

cp template/DESIGN.md your-project/DESIGN.md

Or reference an existing service as a starting point:

cp design-md/muji/DESIGN.md your-project/DESIGN.md
# then edit for your brand

Place DESIGN.md at your project root alongside AGENTS.md:

your-project/
├── AGENTS.md       # how to build
├── DESIGN.md       # how it should look and feel  ← add this
├── src/
└── ...

DESIGN.md Template Structure

The template extends the standard Google Stitch 9-section format with Japanese typography subsections.

Full Template

# DESIGN.md

## 1. Overview
Brief description of the product, target users, and overall visual direction.

## 2. Color Palette

| Token           | Value     | Usage            |
|-----------------|-----------|------------------|
| `--color-primary` | `#0066CC` | CTAs, links      |
| `--color-bg`     | `#FFFFFF` | Page background  |
| `--color-text`   | `#1A1A1A` | Body text        |
| `--color-muted`  | `#666666` | Secondary text   |

## 3. Typography

### 3.1 Font Families

**和文（Japanese）**

font-family: "Noto Sans JP", / Google Fonts — preferred web font / "Hiragino Kaku Gothic ProN", / macOS / iOS / "Hiragino Sans", / macOS newer / "Meiryo", / Windows / "Yu Gothic", / Windows 8.1+ / sans-serif;

**欧文（Latin / alphanumeric）**

font-family: "Inter", / preferred web font for Latin / -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

**混植（Mixed typesetting）**
Use Japanese font as base; Latin glyphs rendered by Inter layered on top via `@font-face` unicode-range.

### 3.2 Type Scale

| Role       | Size     | Weight | Line-height | Letter-spacing |
|------------|----------|--------|-------------|----------------|
| Display    | 2.5rem   | 700    | 1.4         | -0.02em        |
| Heading 1  | 2rem     | 700    | 1.5         | -0.01em        |
| Heading 2  | 1.5rem   | 600    | 1.5         | 0              |
| Body       | 1rem     | 400    | 1.8         | 0.04em         |
| Small      | 0.875rem | 400    | 1.7         | 0.04em         |
| Caption    | 0.75rem  | 400    | 1.6         | 0.06em         |

### 3.3 Japanese Typography Rules

**Line-height:** Use 1.7–2.0 for body text (wider than Western 1.4–1.5).

**Letter-spacing:** Apply `0.04em`–`0.1em` to body Japanese text; headings may use `0` or slightly negative.

**Kinsoku shori (禁則処理):**

word-break: normal; overflow-wrap: break-word; line-break: strict; / enforce JIS kinsoku rules /

- 行頭禁則文字 (cannot start a line): `）」』】、。・：；？！…―`
- 行末禁則文字 (cannot end a line): `（「『【`

**OpenType features:**

font-feature-settings: "palt" 1, "kern" 1; / palt = proportional alternate widths for punctuation / / kern = kerning /

**Text rendering:**

-webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; text-rendering: optimizeLegibility;

## 4. Spacing & Layout

Base unit: `8px`

| Token        | Value  |
|--------------|--------|
| `--space-xs` | `4px`  |
| `--space-sm` | `8px`  |
| `--space-md` | `16px` |
| `--space-lg` | `32px` |
| `--space-xl` | `64px` |

Max content width: `1200px` with `24px` horizontal padding on mobile.

## 5. Components
[Describe buttons, inputs, cards, navigation patterns]

## 6. Icons & Imagery
[Icon set, image ratios, illustration style]

## 7. Motion & Animation
[Transition durations, easing curves]

## 8. Responsive Breakpoints

| Name   | Width    |
|--------|----------|
| Mobile | < 768px  |
| Tablet | 768–1024px |
| Desktop| > 1024px |

## 9. Accessibility
- Contrast ratio: minimum 4.5:1 for body text
- Focus indicators: visible outline
- Tap targets: minimum 44×44px

Reference DESIGN.md Examples

MUJI Style (Minimalist Retail)

## Color Palette
| Token              | Value     |
|--------------------|-----------|
| `--color-primary`  | `#000000` |
| `--color-bg`       | `#F5F5F0` |
| `--color-text`     | `#333333` |
| `--color-border`   | `#DDDDDD` |

## Typography

### Font Stack

font-family: "Noto Serif JP", "Hiragino Mincho ProN", "Yu Mincho", "MS Mincho", Georgia, serif;

### Body
- font-size: 15px
- line-height: 2.0
- letter-spacing: 0.08em
- font-feature-settings: "palt" 1

### Design Principles
- 徹底した余白（generous whitespace as design element）
- 無彩色を基調（achromatic base palette）
- 装飾を排除（eliminate decoration）

SmartHR Style (B2B SaaS)

## Color Palette
| Token             | Value     |
|-------------------|-----------|
| `--color-primary` | `#0077C8` |
| `--color-success` | `#28A745` |
| `--color-warning` | `#FFC107` |
| `--color-danger`  | `#DC3545` |
| `--color-bg`      | `#F8F9FA` |
| `--color-text`    | `#212529` |

## Typography

### Font Stack

font-family: "Hiragino Kaku Gothic ProN", "Hiragino Sans", Meiryo, "Yu Gothic", sans-serif;

### Type Scale
- Display: 28px / weight 700 / line-height 1.4 / ls 0
- Body: 14px / weight 400 / line-height 1.8 / ls 0.04em
- Label: 12px / weight 500 / line-height 1.6 / ls 0.06em
- Note: Dense information layout — prioritize readability at small sizes

note Style (Media / Publishing)

## Typography

### Font Stack

/ Heading / font-family: "Noto Serif JP", "Hiragino Mincho ProN", serif;

/ Body / font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", sans-serif;

### Reading Typography
- Body: 18px / line-height 1.9 / letter-spacing 0.04em
- Max line length: 38–40 chars (約38文字で折り返し)
- Paragraph spacing: 1.5em
- Drop cap on first paragraph of long-form content

CSS Boilerplate for Japanese UI

Use this as a starting point in any project informed by these DESIGN.md files:

/* ===== Japanese Typography Base ===== */

:root {
  /* Font families */
  --font-ja-sans: "Noto Sans JP", "Hiragino Kaku Gothic ProN",
    "Hiragino Sans", "Meiryo", "Yu Gothic", sans-serif;
  --font-ja-serif: "Noto Serif JP", "Hiragino Mincho ProN",
    "Yu Mincho", "MS Mincho", Georgia, serif;
  --font-en: "Inter", -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;

  /* Type scale */
  --text-display: 2.5rem;
  --text-h1: 2rem;
  --text-h2: 1.5rem;
  --text-h3: 1.25rem;
  --text-body: 1rem;
  --text-sm: 0.875rem;
  --text-xs: 0.75rem;

  /* Line heights */
  --lh-tight: 1.4;   /* headings */
  --lh-normal: 1.8;  /* body */
  --lh-loose: 2.0;   /* long-form reading */

  /* Letter spacing */
  --ls-tight: -0.02em;
  --ls-normal: 0.04em;
  --ls-wide: 0.08em;
}

/* Base Japanese text rendering */
body {
  font-family: var(--font-ja-sans);