diff --git a/src/components/Sidebar.tsx b/src/components/Sidebar.tsx
index cb9ad91..488ea9b 100644
--- a/src/components/Sidebar.tsx
+++ b/src/components/Sidebar.tsx
@@ -102,7 +102,7 @@ export default function Sidebar({
   const activeSession = sessions.find(session => session.id === currentId) ?? null;
 
   return (
-    <aside className="flex shrink-0 items-stretch">
+    <aside className="relative flex shrink-0 items-stretch overflow-visible">
       <div className="glass-sidebar w-72 shrink-0 flex flex-col">
         <div className="px-4 pt-5 pb-3 flex items-center gap-3">
           <div className="w-8 h-8 rounded-[8px] bg-gradient-to-br from-[#e6f578] to-[#d6b36a] flex items-center justify-center shadow-glow-violet">
@@ -188,16 +188,18 @@ export default function Sidebar({
       </div>
 
       {activeSession && (
-        <div className="glass-sidebar w-72 shrink-0 border-l border-[#e6f578]/10">
-          <div className="h-full overflow-y-auto px-4 py-5">
-            <div className="mb-3 flex items-center justify-between gap-3">
-              <div>
-                <div className="text-[10px] font-semibold uppercase tracking-[0.18em] text-[#e6f578]/70">Detail</div>
-                <div className="mt-1 text-[12px] text-white/45">已选项目</div>
+        <div className="absolute left-[calc(100%-1px)] top-0 z-20 w-80 pl-3">
+          <div className="glass-sidebar relative overflow-hidden rounded-[8px] border-l border-[#e6f578]/10 shadow-[0_30px_80px_-40px_rgba(0,0,0,0.9)]">
+            <div className="h-full overflow-y-auto px-4 py-5">
+              <div className="mb-3 flex items-center justify-between gap-3">
+                <div>
+                  <div className="text-[10px] font-semibold uppercase tracking-[0.18em] text-[#e6f578]/70">Detail</div>
+                  <div className="mt-1 text-[12px] text-white/45">已选项目</div>
+                </div>
+                <span className="h-2 w-2 rounded-full bg-[#e6f578] shadow-[0_0_18px_rgba(230,245,120,0.75)]" />
               </div>
-              <span className="h-2 w-2 rounded-full bg-[#e6f578] shadow-[0_0_18px_rgba(230,245,120,0.75)]" />
+              <ActiveSessionDetail session={activeSession} />
             </div>
-            <ActiveSessionDetail session={activeSession} />
           </div>
         </div>
       )}