diff --git a/public/index.html b/public/index.html
index 01481bc..6a32343 100644
--- a/public/index.html
+++ b/public/index.html
@@ -14,6 +14,28 @@
   
   <link rel="stylesheet" href="styles.css">
   <link rel="stylesheet" href="styles_v2.css">
+<style>
+/* ── responsive nav (2026-09-30) ── */
+.hamburger-btn { display: none; background: rgba(15,23,42,0.8); border: 1px solid var(--border-color);
+  color: #e2e8f0; border-radius: 8px; padding: 0.55rem 0.8rem; font-size: 1.1rem; cursor: pointer; }
+@media (max-width: 1100px) {
+  .top-nav { flex-wrap: wrap; gap: 0.5rem; }
+  .nav-metrics { order: 3; width: 100%; justify-content: flex-start; gap: 0.5rem; }
+  .metric-pill { font-size: 0.7rem; padding: 0.25rem 0.5rem; max-width: 48%; overflow: hidden; }
+  .metric-pill .pill-value { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; display: inline-block; max-width: 180px; vertical-align: bottom; }
+  .hamburger-btn { display: inline-block; order: 2; margin-left: auto; }
+  .nav-menu { display: none; order: 4; width: 100%; }
+  .nav-menu.open { display: block; }
+  .nav-menu .action-area { display: flex !important; flex-wrap: wrap; gap: 0.4rem !important; padding: 0.5rem 0;
+    border-top: 1px solid var(--border-color); }
+  .nav-menu .btn { padding: 0.4rem 0.6rem; font-size: 0.75rem; }
+  .action-area .btn i { margin-right: 0.25rem; }
+}
+@media (max-width: 640px) {
+  .nav-menu .action-area { flex-direction: column; }
+  .nav-menu .btn { width: 100%; text-align: left; }
+}
+</style>
 </head>
 <body>
 
@@ -41,7 +63,11 @@
       </div>
     </div>
 
-    <div class="action-area" style="display: flex; gap: 0.75rem;">
+    <button id="hamburgerBtn" class="hamburger-btn" onclick="toggleNavMenu()" aria-label="Menu">
+      <i class="fa-solid fa-bars"></i>
+    </button>
+    <div id="navMenu" class="nav-menu">
+      <div class="action-area" style="display: flex; gap: 0.75rem; flex-wrap: wrap;">
       <a href="/api/export/csv" class="btn btn-secondary" style="text-decoration: none;" download>
         <i class="fa-solid fa-file-csv"></i> Nodes CSV
       </a>
@@ -66,6 +92,7 @@
       <button class="btn btn-secondary" style="border-color: var(--accent-rose); color: var(--accent-rose);" onclick="killSwitch()">
         <i class="fa-solid fa-skull"></i> Kill Switch
       </button>
+      </div>
     </div>
   </header>
 
@@ -602,6 +629,30 @@ function applyInstallerPersist() {
 }
 document.addEventListener('DOMContentLoaded', () => setTimeout(applyInstallerPersist, 100));
 </script>
+<script>
+function toggleNavMenu() {
+  const m = document.getElementById('navMenu');
+  const b = document.getElementById('hamburgerBtn');
+  if (m && b) {
+    m.classList.toggle('open');
+    b.innerHTML = m.classList.contains('open') ? '<i class="fa-solid fa-xmark"></i>' : '<i class="fa-solid fa-bars"></i>';
+  }
+}
+// injected buttons (Export All, Update All, Topology) go into the nav-menu when it exists
+const _origNavInject = setInterval(() => {
+  const menu = document.getElementById('navMenu');
+  if (!menu) return;
+  clearInterval(_origNavInject);
+  const mo = new MutationObserver(() => {
+    const ks = document.querySelector('.nav-menu button[onclick="killSwitch()"]');
+    ['exportAllBtn', 'updateAllBtn', 'topoBtn'].forEach(id => {
+      const b = document.getElementById(id);
+      if (b && !menu.contains(b)) menu.querySelector('.action-area').appendChild(b);
+    });
+  });
+  mo.observe(document.body, { childList: true, subtree: true });
+}, 500);
+</script>
 </body>
 </html>
 <!-- ═══ NexusOps v2 UI markup ═══ -->