style: text-shadow替代加粗

src/components/Post/Toc.astro

@@ -58,13 +58,17 @@ const lowLevel = Math.min(...toc.map((v) => v.level));
 
   .toc-item:hover {
     color: var(--text-title-hover);
-    font-weight: bold;
+    text-shadow:
+      0.3px 0 0 currentColor,
+      -0.3px 0 0 currentColor;
   }
 
   .toc-item.is-active {
     position: relative;
     color: var(--text-title-hover);
-    font-weight: bold;
+    text-shadow:
+      0.3px 0 0 currentColor,
+      -0.3px 0 0 currentColor;
   }
 
   .toc-item.is-active::before {
@@ -80,7 +84,7 @@ const lowLevel = Math.min(...toc.map((v) => v.level));
   }
 
   @media (max-width: 1250px) {
-    .toc-mount{
+    .toc-mount {
       display: none;
     }
   }