diff --git a/app/router.php b/app/router.php
index a4adca3..73220a6 100644
--- a/app/router.php
+++ b/app/router.php
@@ -351,6 +351,14 @@ function renderFile(string $filePath): void {
     exit;
 }
 
+// Check for assets in /custom/assets/ served at root level
+$assetPath = dirname(__DIR__) . '/custom/assets/' . $requestPath;
+if (file_exists($assetPath) && is_file($assetPath)) {
+    header('Content-Type: ' . (mime_content_type($assetPath) ?: 'application/octet-stream'));
+    readfile($assetPath);
+    exit;
+}
+
 // Handle frontpage
 if (empty($requestPath)) {
     // Try language-specific frontpage first, then default