diff --git a/web/.htaccess b/web/.htaccess
index 9021492..174ae99 100644
--- a/web/.htaccess
+++ b/web/.htaccess
@@ -4,3 +4,12 @@
   Header set Cross-Origin-Opener-Policy "same-origin"
   Header set Cross-Origin-Embedder-Policy "require-corp"
 </IfModule>
+
+# Flutter HTML5 routing — all unknown paths serve index.html
+Options -Indexes
+RewriteEngine On
+
+RewriteCond %{REQUEST_FILENAME} !-f
+RewriteCond %{REQUEST_FILENAME} !-d
+
+RewriteRule ^(.*)$ /index.html [L,QSA]