Fix: subtopics hidden by default via CSS

js/main.js

@@ -344,8 +344,14 @@ async function loadWiki() {
         // Toggle topic on click
         topicTitle.onclick = () => {
           console.log('Topic clicked:', topicName, 'current hidden:', subtopicsDiv.classList.contains('hidden'));
-          subtopicsDiv.classList.toggle('hidden');
-          console.log('After toggle, hidden:', subtopicsDiv.classList.contains('hidden'));
+          // Subtopics should be hidden by default, show them when topic clicked
+          if (subtopicsDiv.classList.contains('hidden')) {
+            subtopicsDiv.classList.remove('hidden');
+            console.log('Showing subtopics');
+          } else {
+            subtopicsDiv.classList.add('hidden');
+            console.log('Hiding subtopics');
+          }
         };
         
         subtopics.forEach(sub => {