diff --git a/lib/client.js b/lib/client.js
index c1db1f2..dd38eb2 100644
--- a/lib/client.js
+++ b/lib/client.js
@@ -195,7 +195,10 @@ window.__ModuleLoader__.load({
 .dsh-ct-switch::after{content:"";display:block;width:20px;height:20px;border-radius:999px;background:var(--dsw-alias-bg-layer-3);transition:transform .16s}
 .dsh-ct-switch[aria-checked=true]::after{transform:translateX(16px)}
 .dsh-ct-entry{box-sizing:border-box;flex:none;justify-content:center;align-items:center;display:flex;overflow:hidden;font-family:inherit;cursor:pointer}
+.dsh-ct-entry svg{flex:none;display:block;margin:0}
 .dsh-ct-entryLabel{white-space:nowrap;overflow:hidden}
+[class*="_collapsed"] .dsh-ct-entry{width:36px;height:36px;padding:0;gap:0;margin:0 0 12px;justify-content:center;align-items:center;align-self:flex-start}
+[class*="_collapsed"] .dsh-ct-entry .dsh-ct-entryLabel{max-width:0;opacity:0;margin:0;padding:0;pointer-events:none}
 .dsh-ct-region{display:none !important;flex-direction:column;flex:1;min-height:0;overflow:hidden;padding-right:var(--dsh-sidebar-inline-padding,12px);box-sizing:border-box}
 [data-dsh-ct-mode=on] .dsh-ct-region{display:flex !important;animation:dsh-ct-fade-in .18s var(--ds-ease-in-out,ease)}
 [data-dsh-ct-mode=on] [class*="regionArea"] > :not(.dsh-ct-region){display:none !important}
@@ -1173,6 +1176,11 @@ window.__ModuleLoader__.load({
       window.dispatchEvent(new CustomEvent('dsh-ct-mode', { detail: on }))
     }
 
+    function sidebarCollapsed(found) {
+      const root = findSidebarRoot(found)
+      return !!(root && /(?:^|\s)[\w-]*_collapsed(?:\s|$)/.test(String(root.className || '')))
+    }
+
     function syncEntryLook(entry, found) {
       if (!entry || !found) return
       const nativeClass = String(found.className || '').trim()
@@ -1181,10 +1189,16 @@ window.__ModuleLoader__.load({
       const label = entry.querySelector('span')
       if (nativeLabel && label) label.className = `${nativeLabel.className} dsh-ct-entryLabel`.trim()
       const cs = getComputedStyle(found)
+      const collapsed = sidebarCollapsed(found) || Number.parseFloat(cs.width) <= 40
       entry.style.borderRadius = cs.borderRadius
-      entry.style.height = cs.height
-      entry.style.padding = cs.padding
-      entry.style.gap = cs.gap
+      entry.style.height = collapsed ? '36px' : cs.height
+      entry.style.width = collapsed ? '36px' : ''
+      entry.style.padding = collapsed ? '0' : cs.padding
+      entry.style.gap = collapsed ? '0' : cs.gap
+      entry.style.margin = collapsed ? '0 0 12px' : cs.margin
+      entry.style.justifyContent = 'center'
+      entry.style.alignItems = 'center'
+      entry.style.alignSelf = collapsed ? 'flex-start' : ''
       entry.style.fontSize = cs.fontSize
       entry.style.fontWeight = cs.fontWeight
       entry.style.lineHeight = cs.lineHeight
@@ -1192,6 +1206,12 @@ window.__ModuleLoader__.load({
       entry.style.backgroundColor = cs.backgroundColor
       entry.style.boxShadow = cs.boxShadow
       entry.style.color = cs.color
+      if (label) {
+        label.style.maxWidth = collapsed ? '0' : ''
+        label.style.opacity = collapsed ? '0' : ''
+        label.style.margin = collapsed ? '0' : ''
+        label.setAttribute('aria-hidden', collapsed ? 'true' : 'false')
+      }
       const nativeSvg = found.querySelector('svg')
       const icon = entry.querySelector('svg')
       if (nativeSvg && icon) {
diff --git a/test/package.test.js b/test/package.test.js
index e0e30eb..5ea5aa9 100644
--- a/test/package.test.js
+++ b/test/package.test.js
@@ -58,6 +58,9 @@ test('installable bundle declares host apply, client half, unique id, and no @de
   assert.match(client, /新建会话/)
   assert.match(client, /logoRow/)
   assert.match(client, /dsh-ct-entry/)
+  assert.match(client, /sidebarCollapsed/)
+  assert.match(client, /_collapsed/)
+  assert.match(client, /width:36px/)
   assert.match(client, /返回工作区/)
   assert.match(client, /runs\/\$\{run\.id\}\/open/)
   assert.match(client, /regionArea/)