brex-ui-skills

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English

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Chinese

Brex UI Skills

Brex UI 技能指南

Opinionated constraints for building Brex-style interfaces with AI agents.

为AI Agent构建Brex风格界面的约束性规范。

When to Apply

适用场景

Reference these guidelines when:

Building light-mode interfaces
Creating Brex-inspired design systems
Implementing UIs with Inter font and 4px grid

在以下场景中参考本指南：

构建浅色模式界面
创建受Brex启发的设计系统
实现采用Inter字体和4px网格的UI

Colors

颜色规范

SHOULD use light backgrounds for primary surfaces
MUST use
```
#D9D1CF
```
as page background (
```
surface-base
```
)
MUST use
```
#00070D
```
for primary actions and focus states (
```
accent
```
)
SHOULD reduce color palette (currently 13 colors detected)
MUST maintain text contrast ratio of at least 4.5:1 for accessibility

主界面区域应使用浅色背景
页面背景必须使用
```
#D9D1CF
```
（对应
```
surface-base
```
）
主操作和焦点状态必须使用
```
#00070D
```
（对应
```
accent
```
）
应精简调色板（当前检测到13种颜色）
为保障无障碍性，文本对比度必须至少达到4.5:1

Semantic Tokens

语义化令牌

Token	HEX	RGB	Usage
`surface-base`	#D9D1CF	rgb(217,209,207)	Page background
`surface-raised`	#FEFEFD	rgb(254,254,253)	Cards, modals, raised surfaces
`surface-overlay`	#FF4206	rgb(255,66,6)	Overlays, tooltips, dropdowns
`text-primary`	#D98C71	rgb(217,140,113)	Headings, body text
`text-secondary`	#F3AB84	rgb(243,171,132)	Secondary, muted text
`text-tertiary`	#949397	rgb(148,147,151)	Additional text
`border-default`	#DFE0E1	rgb(223,224,225)	Subtle borders, dividers
`destructive`	#D98C71	rgb(217,140,113)	Error states, delete actions
`accent`	#00070D	rgb(0,7,13)	Primary actions, links, focus
`warning`	#FEFEFD	rgb(254,254,253)	Warning states, cautions

令牌	十六进制值	RGB值	用途
`surface-base`	#D9D1CF	rgb(217,209,207)	页面背景
`surface-raised`	#FEFEFD	rgb(254,254,253)	卡片、模态框、悬浮层
`surface-overlay`	#FF4206	rgb(255,66,6)	覆盖层、提示框、下拉菜单
`text-primary`	#D98C71	rgb(217,140,113)	标题、正文文本
`text-secondary`	#F3AB84	rgb(243,171,132)	次要、弱化文本
`text-tertiary`	#949397	rgb(148,147,151)	辅助文本
`border-default`	#DFE0E1	rgb(223,224,225)	细微边框、分隔线
`destructive`	#D98C71	rgb(217,140,113)	错误状态、删除操作
`accent`	#00070D	rgb(0,7,13)	主操作、链接、焦点
`warning`	#FEFEFD	rgb(254,254,253)	警告状态、提示信息

Typography

排版规范

MUST use
```
Inter
```
as primary font family
SHOULD use single font family for consistency
MUST use
```
68px
```
/
```
700
```
for primary headings
MUST use
```
24px
```
/
```
400
```
for body text
MUST limit font weights to: medium, bold, regular
MUST use
```
text-balance
```
for headings and
```
text-pretty
```
for body text
SHOULD use
```
tabular-nums
```
for numeric data
NEVER modify letter-spacing unless explicitly requested

必须使用
```
Inter
```
作为主要字体族
为保持一致性，应使用单一字体族
主标题必须使用
```
68px
```
/
```
700
```
字重
正文文本必须使用
```
24px
```
/
```
400
```
字重
字体字重必须限制为：medium、bold、regular
标题必须使用
```
text-balance
```
，正文必须使用
```
text-pretty
```
数字数据应使用
```
tabular-nums
```
除非明确要求，否则不得修改字母间距

Text Styles

文本样式

Style	Font	Size	Weight	Color	Count
`heading-1`	Inter	68px	700	#242528	1
`body`	Inter	24px	400	#7D7E81	1
`text-17px`	Inter	17px	500	#3B3A3D	1
`text-15px`	Inter	15px	400	#5B5B5C	1
`text-15px`	Inter	15px	400	#545455	1
`text-14px`	Inter	14px	400	#D98C71	1
`text-14px`	Inter	14px	400	#949397	1
`caption`	Inter	13px	400	#F3AB84	1
`label`	Inter	13px	400	#F2A47B	1
`label`	Inter	12px	400	#565656	1

样式	字体	字号	字重	颜色	数量
`heading-1`	Inter	68px	700	#242528	1
`body`	Inter	24px	400	#7D7E81	1
`text-17px`	Inter	17px	500	#3B3A3D	1
`text-15px`	Inter	15px	400	#5B5B5C	1
`text-15px`	Inter	15px	400	#545455	1
`text-14px`	Inter	14px	400	#D98C71	1
`text-14px`	Inter	14px	400	#949397	1
`caption`	Inter	13px	400	#F3AB84	1
`label`	Inter	13px	400	#F2A47B	1
`label`	Inter	12px	400	#565656	1

Typography Reference

排版参考

Font Families:

```
Inter
```
(used 15x)

Font Sizes: 11px, 12px, 13px, 14px, 15px, 17px, 24px, 68px

字体族:

```
Inter
```
（使用15次）

字号: 11px, 12px, 13px, 14px, 15px, 17px, 24px, 68px

Spacing

间距规范

MUST use 4px grid for spacing
SHOULD use spacing from scale: 5px, 60px
SHOULD use 5px as default gap between elements
NEVER use arbitrary spacing values (use design scale)
SHOULD maintain consistent padding within containers

必须使用4px网格进行间距布局
应使用指定的间距尺度：5px、60px
元素间默认间距应使用5px
不得使用任意间距值（需遵循设计尺度）
容器内的内边距应保持一致

Borders

边框规范

MUST use border-radius from scale: 6px, 7px, 15px
MUST use 1px border width consistently
SHOULD use 7px as default border-radius
NEVER use arbitrary border-radius values (use design scale)
SHOULD use subtle borders (1px) for element separation

必须使用指定的圆角尺度：6px、7px、15px
边框宽度必须统一使用1px
默认圆角应使用7px
不得使用任意圆角值（需遵循设计尺度）
应使用细微边框（1px）分隔元素

Border Radius Reference

圆角参考

Scale: 6px, 7px, 15px

尺度: 6px, 7px, 15px

Layout

布局规范

MUST design for 1920px base viewport width
SHOULD use consistent element widths: 10px, 74px, 48px
SHOULD maintain text-heavy layout with clear hierarchy
NEVER use
```
h-screen
```
, use
```
h-dvh
```
for full viewport height
MUST respect
```
safe-area-inset
```
for fixed elements
SHOULD use
```
size-*
```
for square elements instead of
```
w-*
```
+
```
h-*
```

必须以1920px作为基础视口宽度进行设计
应使用统一的元素宽度：10px、74px、48px
应保持文本主导的布局，层次结构清晰
不得使用
```
h-screen
```
，需使用
```
h-dvh
```
实现全屏高度
固定元素必须遵循
```
safe-area-inset
```
规范
方形元素应使用
```
size-*
```
而非
```
w-*
```
+
```
h-*
```

Detected Layout Patterns

检测到的布局模式

Main Content: width: 1920px, height: 969px
Main Content: width: 1920px, height: 752px
Header: height: 61px
Header: height: 50px
Header: height: 49px

主内容区: 宽度: 1920px, 高度: 969px
主内容区: 宽度: 1920px, 高度: 752px
头部: 高度: 61px
头部: 高度: 50px
头部: 高度: 49px

Components

组件规范

Buttons

按钮

Variant	Background	Text	Border	Height	Radius
Ghost	transparent	#F3AB84	none	-	-

变体	背景色	文本色	边框	高度	圆角
Ghost	transparent	#F3AB84	none	-	-

Interactive States

交互状态规范

Focus

焦点状态

MUST use
```
2px
```
outline with accent color (
```
#00070D
```
)
MUST use
```
2px
```
outline-offset
NEVER remove focus indicators

必须使用2px宽的
```
accent
```
色（
```
#00070D
```
）外轮廓
必须设置2px的外轮廓偏移量
不得移除焦点指示器

Hover

悬停状态

Buttons (primary): lighten background by 10%
Buttons (secondary): use
```
#FEFEFD
```
background
List items: use
```
#FEFEFD
```
background

主按钮：背景色提亮10%
次要按钮：使用
```
#FEFEFD
```
作为背景色
列表项：使用
```
#FEFEFD
```
作为背景色

Disabled

禁用状态

MUST use
```
opacity: 0.5
```
MUST use
```
cursor: not-allowed
```

必须设置
```
opacity: 0.5
```
必须设置
```
cursor: not-allowed
```

Interaction

交互规范

MUST use an
```
AlertDialog
```
for destructive or irreversible actions
SHOULD use structural skeletons for loading states
MUST show errors next to where the action happens
NEVER block paste in
```
input
```
or
```
textarea
```
elements
MUST add an
```
aria-label
```
to icon-only buttons

破坏性或不可逆操作必须使用
```
AlertDialog
```
加载状态应使用结构化骨架屏
错误提示必须显示在操作发生的位置附近
不得禁止
```
input
```
或
```
textarea
```
的粘贴功能
纯图标按钮必须添加
```
aria-label
```

Animation

动画规范

NEVER add animation unless it is explicitly requested
MUST animate only compositor props (
```
transform
```
,
```
opacity
```
)
NEVER animate layout properties (
```
width
```
,
```
height
```
,
```
top
```
,
```
left
```
,
```
margin
```
,
```
padding
```
)
SHOULD use
```
ease-out
```
on entrance animations
NEVER exceed
```
200ms
```
for interaction feedback
SHOULD respect
```
prefers-reduced-motion
```

除非明确要求，否则不得添加动画
仅允许对合成器属性（
```
transform
```
、
```
opacity
```
）进行动画处理
不得对布局属性（
```
width
```
、
```
height
```
、
```
top
```
、
```
left
```
、
```
margin
```
、
```
padding
```
）进行动画处理
入场动画应使用
```
ease-out
```
缓动函数
交互反馈动画时长不得超过200ms
应遵循
```
prefers-reduced-motion
```
设置

Performance

性能规范

NEVER animate large
```
blur()
```
or
```
backdrop-filter
```
surfaces
NEVER apply
```
will-change
```
outside an active animation
NEVER use
```
useEffect
```
for anything that can be expressed as render logic

不得对大面积
```
blur()
```
或
```
backdrop-filter
```
区域进行动画处理
仅在动画活跃期间使用
```
will-change
```
任何可通过渲染逻辑实现的功能，不得使用
```
useEffect
```