<div class="demo-row"> <button class="switch" type="button" role="switch" aria-checked="true" aria-label="标准开关（开）"><span class="switch-thumb"></span></button> <button class="switch" type="button" role="switch" aria-checked="false" aria-label="标准开关（关）"><span class="switch-thumb"></span></button> <button class="switch switch--sm" type="button" role="switch" aria-checked="true" aria-label="小号开关"><span class="switch-thumb"></span></button></div><div class="demo-row" style="margin-top:16px"> <button class="checkbox focus-ring" type="button" role="checkbox" aria-checked="false" aria-label="未选中"></button> <button class="checkbox focus-ring" type="button" role="checkbox" aria-checked="true" aria-label="已选中"></button> <button class="checkbox focus-ring" type="button" role="checkbox" aria-checked="mixed" aria-label="半选"></button></div><div class="demo-col" style="margin-top:16px"> <div class="radio-group" role="radiogroup" aria-label="套餐"> <button class="radio-item motion is-selected" type="button" role="radio" aria-checked="true"><span class="radio-dot"></span>基础版</button> <button class="radio-item motion" type="button" role="radio" aria-checked="false"><span class="radio-dot"></span>专业版</button> <button class="radio-item motion" type="button" role="radio" aria-checked="false"><span class="radio-dot"></span>旗舰版</button> </div></div>安装
bun add @icen.ai/uipnpm add @icen.ai/uinpm install @icen.ai/uiyarn add @icen.ai/ui一行引入该组件（CSS 与 behavior 自动带上，无需关心内部 CSS 文件名）：
import '@icen.ai/ui/kit/switch';也可以用脚手架直接打印引入行：
bunx --bun @icen.ai/ui add switch
Astro 项目注意：kit 入口里的 CSS import 在页面 <script> 里会被 Astro 的 client bundle 摇掉——请改在布局 frontmatter 里引 CSS（import '@icen.ai/ui/components/switch.css';），JS 行为仍可走 kit。Vite SPA / webpack 项目无此问题。
用法
<button class="switch" type="button" role="switch" aria-checked="false"> <span class="switch-thumb"></span></button><!-- 状态由使用方驱动：点击切换 aria-checked，CSS 负责全部视觉 -->