diff --git a/app/root.tsx b/app/root.tsx
index 3d1a0eb..8e7c096 100644
--- a/app/root.tsx
+++ b/app/root.tsx
@@ -28,7 +28,7 @@ export function Layout({ children }: { children: React.ReactNode }) {
         <Links />
         <script
           dangerouslySetInnerHTML={{
-            __html: `(function(){try{var t=localStorage.getItem('crema-theme');if(!t)t=window.matchMedia('(prefers-color-scheme: dark)').matches?'dark':'light';if(t==='dark')document.documentElement.classList.add('dark');var f=localStorage.getItem('crema-font-scale');if(f&&/^(sm|md|lg|xl)$/.test(f))document.documentElement.dataset.fontScale=f;var b=localStorage.getItem('crema-bg');if(b&&/^(drift|static)$/.test(b)){document.addEventListener('DOMContentLoaded',function(){document.body.dataset.bg=b;});}var s=localStorage.getItem('crema-surface');if(s&&/^(snow|stone|sage|slate)$/.test(s)){document.addEventListener('DOMContentLoaded',function(){document.body.dataset.surface=s;});}}catch(e){}})();`,
+            __html: `(function(){try{var t=localStorage.getItem('crema-theme');if(!t)t='dark';if(t==='dark')document.documentElement.classList.add('dark');var f=localStorage.getItem('crema-font-scale');if(!f||!/^(sm|md|lg|xl)$/.test(f))f='sm';document.documentElement.dataset.fontScale=f;var b=localStorage.getItem('crema-bg');if(b&&/^(drift|static)$/.test(b)){document.addEventListener('DOMContentLoaded',function(){document.body.dataset.bg=b;});}var s=localStorage.getItem('crema-surface');if(s&&/^(snow|stone|sage|slate)$/.test(s)){document.addEventListener('DOMContentLoaded',function(){document.body.dataset.surface=s;});}}catch(e){}})();`,
           }}
         />
       </head>