### Description #### Line Highlighting <img width="807" height="782" alt="Image" src="https://github.com/user-attachments/assets/0ca72e52-2cd0-4599-8ea9-d809fc424d66" /> #### Code Block Title Background Color <img width="818" height="818" alt="Image" src="https://github.com/user-attachments/assets/e4aa23be-f2ae-4cf4-8a50-bbb281e02fe8" /> ### Reproduction - https://vuepress.github.io/guide/markdown.html#line-highlighting - https://vuepress.github.io/guide/markdown.html#code-title
