diff --git a/index.html b/index.html
index 62f6e91..296bb19 100644
--- a/index.html
+++ b/index.html
@@ -191,6 +191,22 @@ <h2 class="section-title">Contact</h2>
       var reduceMotion = window.matchMedia && window.matchMedia('(prefers-reduced-motion: reduce)').matches;
       var scrollDebounce = null;
       var lastScrollIndex = -1;
+      var programmaticScrollIndex = null;
+      var programmaticScrollTimer = null;
+
+      function clearProgrammaticScroll() {
+        programmaticScrollIndex = null;
+        if (programmaticScrollTimer) {
+          clearTimeout(programmaticScrollTimer);
+          programmaticScrollTimer = null;
+        }
+      }
+
+      function markProgrammaticScroll(index) {
+        programmaticScrollIndex = index;
+        if (programmaticScrollTimer) clearTimeout(programmaticScrollTimer);
+        programmaticScrollTimer = window.setTimeout(clearProgrammaticScroll, 1000);
+      }
 
       function indexFromCenter() {
         if (!carousel) return 0;
@@ -251,6 +267,7 @@ <h2 class="section-title">Contact</h2>
         }
 
         if (!fromScroll) {
+          markProgrammaticScroll(index);
           scrollTabToCenter(index);
         }
 
@@ -264,6 +281,10 @@ <h2 class="section-title">Contact</h2>
         if (scrollDebounce) clearTimeout(scrollDebounce);
         scrollDebounce = setTimeout(function () {
           scrollDebounce = null;
+          if (programmaticScrollIndex !== null) {
+            clearProgrammaticScroll();
+            return;
+          }
           var idx = indexFromCenter();
           if (idx === lastScrollIndex) return;
           setActive(idx, false, true);
@@ -314,7 +335,7 @@ <h2 class="section-title">Contact</h2>
       tabs.forEach(function (t, i) {
         if (t.classList.contains('is-active')) initialIndex = i;
       });
-      setActive(initialIndex, false, false);
+      setActive(initialIndex, false, true);
     })();
   </script>
 </body>