diff --git a/internal/web/static/app.css b/internal/web/static/app.css
index 484bcd5..7c759cd 100644
--- a/internal/web/static/app.css
+++ b/internal/web/static/app.css
@@ -199,7 +199,12 @@ input:focus, textarea:focus { outline: none; border-color: var(--accent); box-sh
 /* Bottom tab bar on phones. */
 .nav {
   position: fixed; left: 0; right: 0; bottom: 0; z-index: 20;
-  display: grid; grid-template-columns: repeat(4, 1fr);
+  /* One column per link, however many there are. This was repeat(4, 1fr) when
+     there were four tabs; Team and Admin arriving pushed six items into four
+     columns, which on a phone is how they stopped fitting. Auto columns mean
+     the next tab cannot break the row either — and Admin is only rendered for
+     an administrator, so the count genuinely varies between viewers. */
+  display: grid; grid-auto-flow: column; grid-auto-columns: 1fr;
   height: calc(var(--tabbar-h) + var(--safe-bottom));
   padding-bottom: var(--safe-bottom);
   background: color-mix(in srgb, var(--surface) 92%, transparent);
@@ -212,8 +217,25 @@ input:focus, textarea:focus { outline: none; border-color: var(--accent); box-sh
   position: relative;
   display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px;
   color: var(--faint); font-size: 11px; font-weight: 600;
+  /* min-width lets a column shrink below its label's natural width, which is
+     what stops six tabs widening the bar past the screen. */
+  min-width: 0; padding: 0 2px;
 }
-.nav-link svg { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
+.nav-label {
+  max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
+}
+.nav-link svg { width: 24px; height: 24px; flex: none; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
+
+/* Narrow phones, where six tabs each get about 55-65px. Tightening is enough:
+   the widest label, "On-call", is about 38px at this size, so nothing has to
+   be hidden. The ellipsis above is the backstop if a future tab is named
+   something longer. */
+@media (max-width: 420px) {
+  .nav-link { font-size: 10px; gap: 1px; }
+  .nav-link svg { width: 21px; height: 21px; }
+  .nav-badge { left: calc(50% + 4px); min-width: 16px; height: 16px; font-size: 10px; line-height: 16px; }
+}
+
 .nav-link[aria-current="page"] { color: var(--accent); }
 .nav-badge {
   position: absolute; top: 6px; left: calc(50% + 6px);
diff --git a/internal/web/static/index.html b/internal/web/static/index.html
index 74640cd..873aaec 100644
--- a/internal/web/static/index.html
+++ b/internal/web/static/index.html
@@ -77,31 +77,31 @@
         <img src="/icon.svg" alt="" width="28" height="28">
         <span>terdut</span>
       </a>
-      <a class="nav-link" href="/" data-section="queue">
+      <a class="nav-link" href="/" data-section="queue" aria-label="Queue">
         <svg viewBox="0 0 24 24" aria-hidden="true"><path d="M4 6h16M4 12h16M4 18h10"/></svg>
         <span class="nav-label">Queue</span>
         <span class="nav-badge" data-badge hidden></span>
       </a>
-      <a class="nav-link" href="/oncall" data-section="oncall">
+      <a class="nav-link" href="/oncall" data-section="oncall" aria-label="On-call">
         <svg viewBox="0 0 24 24" aria-hidden="true"><rect x="3.5" y="5" width="17" height="15" rx="2"/><path d="M3.5 10h17M8 3v4M16 3v4"/></svg>
         <span class="nav-label">On-call</span>
       </a>
-      <a class="nav-link" href="/alerts" data-section="alerts">
+      <a class="nav-link" href="/alerts" data-section="alerts" aria-label="Alerts">
         <svg viewBox="0 0 24 24" aria-hidden="true"><path d="M6 16V11a6 6 0 0 1 12 0v5l1.5 2h-15z"/><path d="M10 20.5a2 2 0 0 0 4 0"/></svg>
         <span class="nav-label">Alerts</span>
       </a>
-      <a class="nav-link" href="/team" data-section="team">
+      <a class="nav-link" href="/team" data-section="team" aria-label="Team">
         <svg viewBox="0 0 24 24" aria-hidden="true"><circle cx="9" cy="8" r="3"/><circle cx="17" cy="9" r="2.5"/><path d="M3 19a6 6 0 0 1 12 0M15 19a5 5 0 0 1 6-4"/></svg>
         <span class="nav-label">Team</span>
       </a>
       <!-- Hidden unless the signed-in user is a system administrator; app.js
            unhides it once /api/me says so. The server refuses every admin
            endpoint regardless, so this is a courtesy and not a gate. -->
-      <a class="nav-link" href="/admin" data-section="admin" id="nav-admin" hidden>
+      <a class="nav-link" href="/admin" data-section="admin" aria-label="Admin" id="nav-admin" hidden>
         <svg viewBox="0 0 24 24" aria-hidden="true"><path d="M12 3l7 3v6c0 4-3 7-7 9-4-2-7-5-7-9V6z"/></svg>
         <span class="nav-label">Admin</span>
       </a>
-      <a class="nav-link" href="/more" data-section="more">
+      <a class="nav-link" href="/more" data-section="more" aria-label="Account">
         <svg viewBox="0 0 24 24" aria-hidden="true"><circle cx="12" cy="8" r="3.5"/><path d="M5 20a7 7 0 0 1 14 0"/></svg>
         <span class="nav-label">Account</span>
       </a>