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astro.config.mjs

@@ -83,10 +83,11 @@ export default defineConfig({
           behavior: 'append',
           properties: {
             className: ['heading-anchor'],
-            'aria-hidden': 'true',
-            tabIndex: -1,
+            ariaLabel: 'Permalink',
           },
-          content: { type: 'text', value: '#' },
+          // Glyph rendered via CSS ::before so it doesn't leak into the TOC
+          // when astro:content extracts heading.text from the rendered HTML.
+          content: [],
         },
       ],
     ],