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 * zzm · 赵子民设计系统 v4「纸 · 墨 · 朱」
 * https://ui.zhaozimin.com  ·  v0.2.0（2026-09-23）  ·  锁版本地址：https://ui.zhaozimin.com/v/0.2.0/zzm.css
 *
 * 用法：引入后在根节点加 class="zzm-v4"——所有样式只在这个作用域内生效
 * 规范：https://ui.zhaozimin.com/DESIGN.md  ·  目录：https://ui.zhaozimin.com/llms.txt
 * 字体：系统字体栈，无网络字体（中文 PingFang SC → Hiragino Sans GB → Microsoft YaHei）
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