# #4 Direction f3b1e77a

> light · 343° · Alfa Slab One / Hanken Grotesk · 8 col

| | |
|---|---|
| hash / ref | `f3b1e77a9af302d06082ad6e19cffb7ede96eefb3dcca2619177519ad6f0bd99` |
| algorithm / library | hash-design/v2 / `bd20321c36ab` |
| constraints | none |

**这份 brief 是冻结的执行规格，不是灵感板。** 每个数值都来自哈希：不要替换字体、颜色、栅格或数值，不要"顺手优化"成你习惯的样子。若与全局禁令冲突，以禁令为准；若 twist 无法照字面执行，取最接近字面的做法，并在 HTML 注释里写明。

## 映射过程 Mapping trace

| bytes | hex | parameter | rule | → result |
|---|---|---|---|---|
| 0+1 | `f3 b1` | hue | 0xf3b1 = 62385; 62385/65536 × 360 | **342.69°** |
| 2 | `e7` | polarity · paper lightness | 231 ≥ 77 → light; L = 0.90 + 154/178 × 0.085 | **light, L 0.974** |
| 3 | `7a` | paper chroma | 122/255 × 0.045 | **0.022** |
| 4 | `9a` | accent chroma | 0.07 + 154/255 × 0.16 | **0.167** |
| 5 | `f3` | accent2 hue offset | 30 + 243/255 × 300 | **+315.88°** |
| 6 | `02` | display face | 2 mod 98 = 2 | **Alfa Slab One** |
| 7 | `d0` | body face | 208 mod 62 = 22 | **Hanken Grotesk** |
| 8 | `60` | display case · weight | 96 mod 4 = 0; ⌊96/4⌋ mod 1 | **as-written, 400** |
| 9 | `82` | display tracking | −0.04 + 130/255 × 0.24 | **0.082em** |
| 10 | `ad` | type scale ratio | 1.067 + 173/255 × 0.551 | **1.441** |
| 11 | `6e` | density | t = 110/255 | **t 0.431: base 16.5px, line-height 1.52, unit 7px** |
| 12 | `19` | grid columns · gutter | 3 + 25 mod 10; unit × (1 + ⌊25/10⌋ mod 4) | **8 columns, 21px gutter** |
| 13 | `cf` | text block span · start | span 15/15, start 12/15 | **columns 1–8 of 8** |
| 14 | `fb` | first-screen height | 45 + 251/255 × 55 | **99%** |
| 15 | `7e` | sections · separator | 3 + 126 mod 6; ⌊126/6⌋ mod 5 | **3 sections, bands** |
| 16 | `de` | anchor subject · size | 222 mod 8; 25 + ⌊222/8⌋/31 × 75 | **word, 90%** |
| 17 | `96` | anchor position · rotation | x 6/15; ((9) − 7.5)/7.5 × 8 | **x 0.4, 1.5°** |
| 18 | `ee` | motif shape · size | 238 mod 12; unit × (1 + ⌊238/12⌋ mod 8) | **zigzags, 28px** |
| 19 | `fb` | motif placement · angle | 251 mod 4; ⌊251/4⌋ × 180/63 | **markers, 177°** |
| 20 | `3d` | radius · border | RADII[61 mod 8]; ⌊61/8⌋ mod 4; ⌊61/32⌋ mod 4 | **4px radius, 3px solid border** |
| 21 | `cc` | shadow · texture | 204 & 3; (204 >> 2) & 3; 3 + 12 × 0.6 | **no shadow, dot-screen 10.2%** |
| 22 | `a2` | motion property · duration | ⌊162/64⌋; (162 mod 64)/63 × 600 | **clip-path, 320ms** |
| 23 | `61` | easing | 97 ≥ 32 → cubic-bezier from bits | **cubic-bezier(0, 0.6, 0.37, 1)** |
| 24 | `91` | voice person · headline form | 145 mod 4; ⌊145/4⌋ mod 6 | **we, statement** |
| 25 | `77` | sentence length · register | 3 + (119 & 15); (119 >> 4)/15 | **10 words, register 0.47** |
| 26 | `51` | twist target | 81 mod 9 | **headline** |
| 27 | `9a` | twist operation · amount | 154 mod 10; ⌊154/10⌋ | **invert, 15** |
| 29 | `f0` | CJK display face | 240 mod 14 _(used on Chinese pages)_ | **LXGW WenKai TC** |
| 30 | `bd` | mono face | 189 mod 8 | **Overpass Mono** |
| 28, 31 | `d6 99` | (unused) | recorded, not used | — |

## 内容 Content

**Subject:** 二号桥单车铺

只能使用以下事实。不得编造数字、评价、奖项或客户；缺少的信息留空或写"待补"。

- 店名：二号桥单车铺（Bridge No.2 Cycle Works）
- 地址：河西路二号桥桥洞下东侧，蓝色卷帘门，门口立着一个旧车轮
- 营业：周三至周日 10:00–20:00；周一、周二休息
- 补胎 ¥15；换内胎 ¥35（含内胎）
- 全车保养 ¥180：清洗传动、调变速和刹车、紧固全车螺丝，约 2 小时
- 手工编轮组 ¥260 起，工期 5 天
- 二手车：每辆都换过链条和刹车皮，保修 90 天
- 公路车 Fitting ¥480，约 90 分钟，需预约
- 店主：陈立平，大家叫他老陈，修车 27 年，以前在自行车厂做装配
- 周四夜骑：每周四 19:30 店门口出发，沿江一圈 24 公里，免费，自带车灯
- 门口气泵免费，24 小时可用
- 预约：电话 0571-5555-0222，或到店登记
- 不卖新车，只修车、卖二手车和零件

## 文案语气 Voice

- **Person:** first person plural ("we")
- **Headlines:** a plain statement
- **Sentences:** about 10 words on average (about 20 characters in Chinese)
- **Register:** 0.47 on a 0–1 scale — plain and neutral

## 版式 Layout

- **Grid:** 8 columns, 21px gutters, max width 1240px
- **Text block:** columns 1–8 of 8 (full width)
- **First screen:** 99% of the viewport height
- **Sections:** 3, separated by full-width bands alternating paper and panel
- Below 640px wide the grid collapses to one column; separators and the anchor stay.

**First-screen anchor:** one word from the subject; about 90% of the first screen's width, centred at 40% from the left edge, rotated 1.5°.

## 字体 Typography

- **Display**: Alfa Slab One 400 · set at 400, as written (sentence case), letter-spacing 0.082em — fallback `Rockwell, serif`
- **Body**: Hanken Grotesk 400/500/600 + italic — fallback `Helvetica, Arial, sans-serif`
- **Mono**: Overpass Mono 400/600 — fallback `"Courier New", monospace`
- **CJK** (Chinese pages): display LXGW WenKai TC, body Noto Sans SC

Scale: ratio **1.441** on a 16.5px base → -2: 7.9px · -1: 11.5px · 0: 16.5px · 1: 23.8px · 2: 34.3px · 3: 49.4px · 4: 71.1px · 5: 102.5px · 6: 147.7px · 7: 212.9px

```html
<link rel="preconnect" href="https://fonts.googleapis.com">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
<link rel="stylesheet" href="https://fonts.googleapis.com/css2?family=Alfa+Slab+One&family=Hanken+Grotesk:ital,wght@0,400;0,500;0,600;1,400;1,500;1,600&family=Overpass+Mono:wght@400;600&family=LXGW+WenKai+TC&family=Noto+Sans+SC:wght@400;700&display=swap">
```

## 配色 Colour — light, hue 342.69°

Computed in OKLCH: paper L 0.974 / C 0.022 at hue 342.69°; accents at chroma 0.167, accent2 315.88° round the wheel. Text lightness is solved for contrast (ink ≥ 7.5:1, muted ≥ 4.6:1, accents ≥ 3:1 on paper).

| token | hex | role |
|---|---|---|
| paper | `#fff2f9` | page background |
| ink | `#45313d` | primary text |
| muted | `#776a72` | secondary text |
| accent | `#d160aa` | the anchor and one kind of mark |
| accent2 | `#9f7be1` | sparingly, under a tenth of the page |
| rule | `#cfb7c5` | lines, borders |
| panel | `#f7e0ed` | secondary background |

Contrast (WCAG):

- ink on paper: **10.98:1** — AAA — any text
- muted on paper: **4.73:1** — AA — body text OK
- ink on panel: **9.57:1** — AAA — any text
- accent on paper: **3.24:1** — large text / UI marks only (≥24px or bold ≥19px)
- accent2 on paper: **3.02:1** — large text / UI marks only (≥24px or bold ≥19px)
- #000000 on accent: **5.96:1** — AA — body text OK
- #000000 on accent2: **6.39:1** — AA — body text OK

## 密度 Density — 0.431

0.431 on the density axis (0 = airiest, 1 = most packed): base 16.5px, line-height 1.52, spacing unit 7px, section gap 109px, max width 1240px.

## 形状与材质 Shape & surface

- **Radius:** 4px on boxes and inputs
- **Borders:** 3px solid in the rule colour
- **Shadow:** none (never a soft, blurred shadow)
- **Texture:** a fine dot screen (radial-gradient pattern) at 10.2% opacity

```css
body { background-image: radial-gradient(color-mix(in srgb, var(--ink) 10.2%, transparent) 1px, transparent 1.5px); background-size: 6px 6px; }
```

## 母题 Motif

Zigzag lines, each about 28px, as list and heading markers, at 177°. Draw them with CSS or inline SVG in the palette colours; no icon fonts, no emoji.

## 动效 Motion

A wipe (clip-path) changes over 320ms with `cubic-bezier(0, 0.6, 0.37, 1)`, on hover, focus and state changes, plus the anchor once on load. Never animate every section on scroll. Under prefers-reduced-motion nothing moves.

## 变数 Twist

The main headline: inverted: paper-coloured on ink.

## 全局禁令 Global bans

- **禁用 Inter 及同类默认无衬线** (generic-sans, critical): 不得使用 Inter / Inter Tight / Inter Display / Roboto / Roboto Flex / Open Sans / Lato / Poppins / Montserrat / Nunito / Nunito Sans / Plus Jakarta Sans / Manrope / DM Sans / Outfit / Figtree / Geist / Urbanist / Sora / Lexend / Raleway / Work Sans / Space Grotesk，也不得只写 system-ui / sans-serif 当作"设计选择"。字体必须来自 brief 指定的字体对。
- **禁用紫蓝渐变** (purple-blue-gradient, critical): 禁止紫/靛/蓝系渐变背景、渐变文字（background-clip:text）、模糊彩色光斑（mesh blob / glow orb）。需要渐变时只能用 brief 调色板内的颜色，且必须有材质理由（如油墨叠印、日晒褪色）。
- **禁用居中 hero + 双按钮** (centered-hero-two-buttons, critical): 禁止"居中大标题 + 一行副标题 + 主按钮/幽灵按钮并排"的首屏。首屏结构必须来自 brief 的 layout 与 anchor。
- **禁用三张同款卡片** (identical-cards, major): 禁止 3/4/6 张结构相同的"图标 + 标题 + 两行说明"卡片排成一行。信息分组要用 brief 指定的版式手段（表格、清单、编号条款、价签、标签……），且各项尺寸/权重应有差异。
- **禁用玻璃态** (glassmorphism, major): 禁止 backdrop-filter 毛玻璃、半透明白卡片叠在彩色背景上。
- **禁用 emoji 当图标** (emoji-icons, major): 禁止用 emoji（✨🚀⚡️🎯 等）充当图标、项目符号或装饰；也不要拿通用图标库（Heroicons/Lucide/Feather）当装饰。需要图形时用 brief 母题自绘 SVG 或纯排版符号。
- **禁用空洞营销文案** (buzzword-copy, major): 禁止 unlock / unleash / seamless / seamlessly / supercharge / elevate / empower / revolutionize / revolutionary / effortless 等英文空话，以及 赋能 / 无缝 / 一站式 / 极致体验 / 颠覆 / 引领未来 / 全方位 / 助力 等中文空话。文案只能由用户提供的事实构成，按 brief 的 voice 写。
- **禁用"圆角 + 柔和大阴影"一切** (soft-shadow-rounded, major): 禁止所有块都是 12–24px 圆角加 0 10px 30px 级别的柔和投影。圆角与阴影只能按 brief tokens 使用（--radius、--shadow：硬投影或不用，绝不模糊）。
- **禁止编造事实与社会证明** (invented-facts, critical): 禁止虚构数据条（"10K+ 用户 / 99.9% 可用"）、"Trusted by" logo 墙、带头像的假评价、假奖项。只用 facts 中给出的信息；缺信息就留空位或写明待补。
- **禁用框架默认色板** (tailwind-default-palette, major): 禁止直接用 Tailwind slate/indigo/violet/sky 默认色值（如 #6366f1、#8b5cf6、#0f172a、#3b82f6），禁止"深海军蓝底 + 霓虹强调色"的开发者工具外观（除非 brief 明确如此）。颜色只能来自 brief 调色板。
- **禁用"每段都淡入上浮"** (scroll-fade-everything, minor): 禁止给每个区块都加滚动淡入上浮（AOS / data-aos / IntersectionObserver fade-up）。动效只能按 brief motion 规格，且必须尊重 prefers-reduced-motion。
- **禁用标题上方的胶囊徽标** (pill-badge-sparkle, minor): 禁止在大标题上方放 "New ✨ / Now in beta →" 一类圆角胶囊小标签。
- **禁用占位内容** (placeholder-content, major): 禁止 Lorem ipsum、"Feature One"、通用图库人物照、随机 Unsplash 图。没有真实图片时，用排版、色块、自绘 SVG 或 brief 母题代替。
- **禁用 SaaS 模板分节** (template-sections, minor): 禁止 Hero → Features → Testimonials → Pricing → FAQ → CTA 的固定套路。分节顺序来自 brief layout 的 structure，内容按事实组织。

## tokens.css

```css
/* hash-design hash-design/v2 · f3b1e77a */
:root {
  --paper: #fff2f9;
  --ink: #45313d;
  --muted: #776a72;
  --accent: #d160aa;
  --on-accent: #000000;
  --accent2: #9f7be1;
  --on-accent2: #000000;
  --rule: #cfb7c5;
  --panel: #f7e0ed;

  --font-display: "Alfa Slab One", "LXGW WenKai TC", Rockwell, serif;
  --font-body: "Hanken Grotesk", "Noto Sans SC", Helvetica, Arial, sans-serif;
  --font-mono: "Overpass Mono", "Courier New", monospace;
  --display-weight: 400;
  --display-tracking: 0.082em;

  --step-n2: 0.497rem; /* 7.9px */
  --step-n1: 0.716rem; /* 11.5px */
  --step-0: 1.031rem; /* 16.5px */
  --step-1: 1.486rem; /* 23.8px */
  --step-2: 2.141rem; /* 34.3px */
  --step-3: 3.086rem; /* 49.4px */
  --step-4: 4.447rem; /* 71.1px */
  --step-5: 6.407rem; /* 102.5px */
  --step-6: 9.233rem; /* 147.7px */
  --step-7: 13.305rem; /* 212.9px */
  --leading: 1.52;

  --space-1: 7px;
  --space-2: 14px;
  --space-3: 21px;
  --space-4: 28px;
  --space-5: 35px;
  --space-6: 42px;
  --space-7: 49px;
  --space-8: 56px;
  --section-gap: 109px;
  --max-width: 1240px;
  --columns: 8;
  --gutter: 21px;

  --radius: 4px;
  --border: 3px solid var(--rule);
  --shadow: none;

  --motion-duration: 320ms;
  --motion-easing: cubic-bezier(0, 0.6, 0.37, 1);
}

html { font-size: 103.1%; }
body { background: var(--paper); color: var(--ink); font-family: var(--font-body); line-height: var(--leading); }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}
```

## 交付前自检 Before you ship

- [ ] Fonts on the page are exactly: Alfa Slab One / Hanken Grotesk / Overpass Mono (+ LXGW WenKai TC / Noto Sans SC)
- [ ] Every colour on the page comes from the 7 palette tokens above
- [ ] 8-column grid, text block in columns 1–8 of 8 (full width), first screen built around one word from the subject
- [ ] Copy uses first person plural ("we"), headlines are a plain statement, only the facts
- [ ] Radius 4px, no shadow, dot-screen texture
- [ ] Twist applied: The main headline: inverted: paper-coloured on ink.
- [ ] `critique_page` (or `hash-design critique --brief f3b1e77a9af302d06082ad6e19cffb7ede96eefb3dcca2619177519ad6f0bd99`) reports no critical/major findings