fix: switch linenums_style to table and remove duplicate CSS counters

Author: codingriver

docs/stylesheets/extra.css

@@ -1,33 +1,3 @@
 /* 自定义样式 */
 
 /* 可在此处添加全局样式覆盖 */
-
-/* 代码块行号显示 (pymdownx-inline 模式) */
-code .hll { display: block; }
-code [id^="__span"] {
-  display: inline;
-}
-
-/* 行号列 */
-.highlight [id^="__span"]::before {
-  counter-increment: linenums;
-  content: counter(linenums);
-  display: inline-block;
-  min-width: 2.5em;
-  padding-right: 0.8em;
-  margin-right: 0.5em;
-  text-align: right;
-  color: var(--md-default-fg-color--light);
-  border-right: 1px solid var(--md-default-fg-color--lighter);
-  user-select: none;
-  -webkit-user-select: none;
-}
-
-.highlight pre {
-  counter-reset: linenums;
-}
-
-/* 行号高亮时的样式 */
-.highlight [id^="__span"]:target {
-  background-color: var(--md-code-hl-color);
-}

mkdocs.yml

@@ -324,7 +324,7 @@ markdown_extensions:
       line_spans: __span
       pygments_lang_class: true
       linenums: true
-      linenums_style: pymdownx-inline
+      linenums_style: table
   - pymdownx.inlinehilite
   - pymdownx.superfences:
       custom_fences: