优化竖屏导航展开样式与左上角收起按钮

src/components/ContentArea.tsx

@@ -100,6 +100,7 @@ export function ContentArea({
           : t("permissions.view")}
     </Tag>
   )
+  const useFloatingSidebarToggle = floatingExpand && sidebarCollapsed
 
   return (
     <Layout
@@ -128,14 +129,20 @@ export function ContentArea({
         <div
           style={
             {
-              paddingLeft: "8px",
+              paddingLeft: useFloatingSidebarToggle ? 0 : "8px",
               display: "flex",
               alignItems: "center",
-              height: "100%",
+              height: useFloatingSidebarToggle ? "auto" : "100%",
               WebkitAppRegion: "no-drag",
               flexShrink: 0,
-              position: "relative",
-              zIndex: floatingExpand && sidebarCollapsed && floatingExpanded ? 1301 : 1,
+              position: useFloatingSidebarToggle ? "fixed" : "relative",
+              left: useFloatingSidebarToggle ? "8px" : undefined,
+              top: useFloatingSidebarToggle ? "4px" : undefined,
+              zIndex: useFloatingSidebarToggle
+                ? 1402
+                : floatingExpand && sidebarCollapsed && floatingExpanded
+                  ? 1301
+                  : 1,
             } as React.CSSProperties
           }
         >

src/components/Sidebar.tsx

@@ -194,6 +194,7 @@ export function Sidebar({
 
   const renderSidebarBody = (isCollapsedView: boolean, hideMenu = false) => (
     <>
+      {!(isCollapsedView && floatingExpand && collapsed) && (
         <div
           data-tauri-drag-region
           style={
@@ -239,6 +240,7 @@ export function Sidebar({
             </>
           )}
         </div>
+      )}
 
       {!hideMenu && (
         <div style={{ flex: 1, overflowY: "auto", display: "flex", flexDirection: "column" }}>
@@ -352,7 +354,10 @@ export function Sidebar({
             top: 0,
             bottom: 0,
             width: "200px",
-            background: "var(--ss-sidebar-bg)",
+            background:
+              "linear-gradient(0deg, rgba(250, 250, 250, 0.72), rgba(250, 250, 250, 0.72)), var(--ss-sidebar-bg)",
+            backdropFilter: "blur(14px)",
+            WebkitBackdropFilter: "blur(14px)",
             borderRight: "1px solid var(--ss-border-color)",
             boxShadow: "6px 0 18px rgba(0, 0, 0, 0.12)",
             zIndex: 1200,