diff --git a/prerender/config.cjs b/prerender/config.cjs
index 877b8f3..314c9e1 100644
--- a/prerender/config.cjs
+++ b/prerender/config.cjs
@@ -50,10 +50,18 @@ const getWebpackEntrypoints = () => {
   return entrypoints;
 };
 
-// Read global CSS styles and fix font paths for prerender
-let globalCss = fs.readFileSync(path.resolve(__dirname, '..', 'src', 'index.css'), 'utf8');
-// Fix relative font paths for prerendered HTML (remove ../public to make them relative to public root)
-globalCss = globalCss.replace(/url\('\.\.\/public/g, "url('");
+// Read global CSS styles - use webpack processed CSS in production, raw CSS in development
+let globalCss = '';
+if (isProduction) {
+  // In production, webpack has already processed fonts and inlined CSS
+  // Don't read raw src/index.css as it has unprocessed font paths
+  globalCss = ''; // CSS will be handled by webpack's inlined CSS
+} else {
+  // In development, read raw CSS and fix font paths for prerender
+  globalCss = fs.readFileSync(path.resolve(__dirname, '..', 'src', 'index.css'), 'utf8');
+  // Fix relative font paths for prerendered HTML (remove ../public to make them relative to public root)
+  globalCss = globalCss.replace(/url\('\.\.\/public/g, "url('");
+}
 
 // Global CSS collection
 const globalCssCollection = new Set();