1. Ordered Lists: Using <ol> instead of a <div> soup tells crawlers that "Web Design" is a child of "Services". This builds a strong site architecture.
2. JSON-LD Schema: Even if a crawler doesn't "see" the CSS, the script tag provides raw data that Google uses to create Rich Snippets in search results.
3. Accessibility: aria-current="page" helps screen readers identify where the user currently is.
1. 有序列表： 使用 <ol> 而不是“div 汤”可以明确告诉爬虫“网页设计”是“服务”的子集，从而建立强大的网站架构。
2. 结构化数据 (JSON-LD)： 即便爬虫不渲染 CSS，<script> 标签提供的原始数据也能帮助谷歌在搜索结果中生成“富摘要”。
3. 可访问性： aria-current="page" 属性帮助屏幕阅读器识别用户当前所处的位置。
By combining semantic <ol> tags with JSON-LD Structured Data,
this pattern enables Google to display your site hierarchy directly in the Search Engine Results
Pages (SERPs). This "Breadcrumb Rich Snippet" significantly increases Click-Through Rates (CTR)
by providing users with clear context before they click.
通过将语义化的 <ol> 标签与 JSON-LD 结构化数据相结合，
此模式使谷歌能够直接在搜索结果页面 (SERP) 中显示您的网站层级。这种“面包屑富摘要”通过在用户点击前提供清晰的上下文，显著提高了点击率 (CTR)。
Breadcrumbs serve as a primary source of Internal Linking. Using a JS-free approach ensures that the "Link Juice" (authority) flows upward to your parent categories every time a crawler visits a deep page. This reinforces your site's architecture for Baidu's 200KB source-priority crawling.
面包屑导航是内部链接的主要来源。采用无需 JS 的方案可确保爬虫每次访问深层页面时， “链接权重”（权威性）都能顺利流向父级目录。这为百度的 200KB 源码优先抓取机制强化了您的网站架构。