diff --git a/components/canvas/CanvasChatPanel.tsx b/components/canvas/CanvasChatPanel.tsx
index 76dfc5280..f3e072096 100644
--- a/components/canvas/CanvasChatPanel.tsx
+++ b/components/canvas/CanvasChatPanel.tsx
@@ -11430,7 +11430,7 @@ export function CanvasChatPanel({
                   </div>
                 </div>
               ) : (
-                <div className="shrink-0">
+                <div className="min-w-0 shrink">
                   <ImageParamsBar
                     modelName={activeComposerMode === "agent" ? agentDisplayName : currentModel?.displayName}
                     initialParams={imageParams}
@@ -11445,21 +11445,21 @@ export function CanvasChatPanel({
               )}
             </div>
 
-            <div className="flex items-center gap-2 flex-shrink-0">
+            <div className="flex flex-shrink-0 items-center gap-2.5">
               {!isWorkspacePresentation && activeComposerMode === "image" ? (
                 <Button
                   variant="ghost"
                   size="icon"
                   title={`深度思考：${deepThinkingEnabled ? "开" : "关"}`}
                   className={cn(
-                    "h-8 w-8 rounded-full border transition-colors",
+                    "h-8 w-8 shrink-0 rounded-full border-0 bg-transparent p-0 shadow-none transition-colors",
                     isVideoWorkspace
                       ? deepThinkingEnabled
-                        ? "border-primary/30 bg-primary/10 text-primary hover:bg-primary/12"
-                        : "border-border/60 bg-background text-muted-foreground hover:bg-background/90"
+                        ? "bg-primary/10 text-primary hover:bg-primary/12"
+                        : "text-muted-foreground hover:bg-muted/70"
                       : deepThinkingEnabled
-                        ? "border-[#8ab0ff] bg-[#eef4ff] text-[#3b5bcc] hover:bg-[#e5efff]"
-                        : "border-[#d8dce3] bg-white text-[#6b7280] hover:bg-[#f4f6f8]"
+                        ? "bg-[#eef4ff] text-[#3b5bcc] hover:bg-[#e5efff]"
+                        : "text-[#6b7280] hover:bg-[#f4f6f8]"
                   )}
                   onClick={() => setDeepThinkingEnabled((prev) => !prev)}
                   disabled={isSubmitting}
diff --git a/components/image-params-bar.tsx b/components/image-params-bar.tsx
index d1ae79b38..cf5ba4896 100644
--- a/components/image-params-bar.tsx
+++ b/components/image-params-bar.tsx
@@ -288,7 +288,7 @@ export function ImageParamsBar({
     return (
       <div
         className={cn(
-          "ml-1 flex items-center gap-1 pl-1",
+          "ml-1 flex min-w-0 items-center gap-1 pl-1",
           showInlineDivider &&
             (isDarkInline ? "border-l border-white/10" : "border-l border-border/50")
         )}
@@ -298,7 +298,7 @@ export function ImageParamsBar({
             <Button
               variant="ghost"
               className={cn(
-                "h-8 max-w-[168px] shrink rounded-[12px] px-2 text-[11px] font-semibold",
+                "h-8 min-w-0 max-w-[168px] shrink rounded-[12px] px-2 text-[11px] font-semibold",
                 isDarkInline
                   ? "border border-white/12 bg-white/[0.06] text-white hover:bg-white/[0.1]"
                   : "border border-[#d6dbe2] bg-[#f3f4f6]/90 text-[#2f3b48] hover:bg-[#edeff2]/90"