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本文深度剖析了 Tailwind CSS 中用于处理同级元素间距的 space 和 divide 功能类。内容系统性地阐述了它们基于相邻兄弟选择器的底层 CSS 实现，并通过对比 Flexbox 的 gap 属性，明确了其在不改变父级格式化上下文前提下应用间距的核心优势。
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本文深度剖析了 Tailwind CSS v4 的核心架构与工程实践。内容系统性地阐述了其 Utility-First 哲学，并重点解析了 v4 全新的 Rust 内核引擎 (Oxide) 的工作原理——包括其源码扫描、JIT 生成机制，以及对动态类名的处理。笔记还详述了 @theme、@apply 和 @source 等新指令的最佳实践。