add tags and categories

layouts/_default/single.html

@@ -123,8 +123,15 @@
         <div class="post-meta mb-3">
           <i class="far fa-folder-open fa-fw me-1"></i>
           {{ range $i, $category := . }}
-            <a href="{{ "/categories/" | relLangURL }}{{ $category | urlize }}/">{{ $category }}</a>
-            {{ if not (eq $i (sub (len $) 1)) }},{{ end }}
+            {{ if eq $i 0 }}
+              <!-- 主分类 -->
+              <a href="{{ "/categories/" | relLangURL }}{{ $category | urlize }}/">{{ $category }}</a>
+            {{ else }}
+              <!-- 子分类：确保链接包含主分类路径 -->
+              {{ $parentCategory := index $.Params.categories 0 }}
+              <a href="{{ "/categories/" | relLangURL }}{{ $parentCategory | urlize }}/{{ $category | urlize }}/">{{ $category }}</a>
+            {{ end }}
+            {{ if not (eq $i (sub (len .) 1)) }},{{ end }}
           {{ end }}
         </div>
       {{ end }}