diff --git a/faq/index.html b/faq/index.html
index acd2197..168b827 100644
--- a/faq/index.html
+++ b/faq/index.html
@@ -98,8 +98,15 @@ const I18N = {
   }
 };
 
+function store(key, val) {
+  try { localStorage.setItem(key, val); } catch (e) { /* private mode / blocked storage */ }
+}
+function stored(key) {
+  try { return localStorage.getItem(key); } catch (e) { return null; }
+}
+
 const state = {
-  lang: (localStorage.getItem('ocaFaqLang') || (navigator.language || 'es').slice(0, 2)) === 'en' ? 'en' : 'es',
+  lang: ((stored('ocaFaqLang') || (navigator.language || 'es').slice(0, 2)) === 'en') ? 'en' : 'es',
   items: [],
 };
 
@@ -220,13 +227,16 @@ async function load() {
   }
 }
 
-document.querySelectorAll('.lang button').forEach(b => {
-  b.onclick = () => {
+const langBox = document.querySelector('.lang');
+if (langBox) {
+  langBox.addEventListener('click', (ev) => {
+    const b = ev.target.closest('button[data-lang]');
+    if (!b) return;
     state.lang = b.dataset.lang;
-    localStorage.setItem('ocaFaqLang', state.lang);
+    store('ocaFaqLang', state.lang);
     applyLang();
-  };
-});
+  });
+}
 el('q').addEventListener('input', render);
 
 applyLang();