diff --git a/components/pages/work-flow.tsx b/components/pages/work-flow.tsx
index 1612c97..95e5fa1 100644
--- a/components/pages/work-flow.tsx
+++ b/components/pages/work-flow.tsx
@@ -540,9 +540,11 @@ Please process this video editing request.`;
                     setCurrentSketchIndex(index);
                   }}
                   onRetryVideo={handleRetryVideo}
-                  className={isDesktop ? 'auto-cols-[20%]' : (isTablet ? 'auto-cols-[25%]' : 'auto-cols-[40%]')}
+                  className={isDesktop ? 'auto-cols-[20%]' : (isTablet ? 'auto-cols-[25%]' : 'auto-cols-[33%]')}
+                  cols={isDesktop ? '20%' : isTablet ? '25%' : '33%'}
                   selectedView={selectedView}
                   aspectRatio={aspectRatio}
+                  isMobile={isMobile}
                 />
               </div>
             )}
diff --git a/components/pages/work-flow/H5MediaViewer.tsx b/components/pages/work-flow/H5MediaViewer.tsx
index 51da617..9cd4a19 100644
--- a/components/pages/work-flow/H5MediaViewer.tsx
+++ b/components/pages/work-flow/H5MediaViewer.tsx
@@ -182,12 +182,15 @@ export function H5MediaViewer({
                     const status = raw?.video_status;
                     const videoId = raw?.video_id as string | undefined;
                     return (
-                        <div key={`h5-video-${idx}`} data-alt="video-slide" className="relative w-full h-full">
+                        <div key={`h5-video-${idx}`} data-alt="video-slide" className="relative w-full h-full flex justify-center">
                             {hasUrl ? (
                                 <>
                                     <video
                                         ref={(el) => (videoRefs.current[idx] = el)}
                                         className="w-full h-full object-contain [transform:translateZ(0)] [backface-visibility:hidden] [will-change:transform] bg-black"
+                                        style={{
+                                            maxHeight: 'calc(100vh - 20rem)',
+                                        }}
                                         src={url}
                                         preload="metadata"
                                         playsInline
@@ -217,38 +220,11 @@ export function H5MediaViewer({
                                             <Play className="w-8 h-8" />
                                         </button>
                                     )}
-
-                                    {/* 顶部操作按钮 */}
-                                    <div data-alt="video-actions" className="absolute top-2 right-2 z-10 flex items-center gap-2">
-                                        {showGotoCutButton && (
-                                            <button
-                                                type="button"
-                                                onClick={onGotoCut}
-                                                data-alt="goto-cut-button"
-                                                className="w-9 h-9 rounded-full bg-black/50 text-white flex items-center justify-center active:scale-95"
-                                                aria-label={'Go to editing platform'}
-                                            >
-                                                <Scissors className="w-5 h-5" />
-                                            </button>
-                                        )}
-                                        {!!setVideoPreview && !!onOpenChat && hasUrl && (
-                                            <button
-                                                type="button"
-                                                onClick={() => {
-                                                    setVideoPreview(url, videoId || '');
-                                                    onOpenChat();
-                                                }}
-                                                data-alt="open-chat-button"
-                                                className="w-9 h-9 rounded-full bg-black/50 text-white flex items-center justify-center active:scale-95"
-                                                aria-label={'Open chat for editing'}
-                                            >
-                                                <MessageCircleMore className="w-5 h-5" />
-                                            </button>
-                                        )}
-                                    </div>
                                 </>
                             ) : (
-                                <div className="w-full aspect-auto min-h-[200px] flex items-center justify-center bg-black/10 relative" data-alt="video-status">
+                                <div className="w-full aspect-auto min-h-[200px] flex items-center justify-center bg-black/10 relative" data-alt="video-status" style={{
+                                    maxHeight: 'calc(100vh - 20rem)',
+                                }}>
                                     {status === 0 && (
                                         <span className="text-blue-500 text-base">Generating...</span>
                                     )}
@@ -256,24 +232,11 @@ export function H5MediaViewer({
                                       <div className="flex flex-col items-center justify-center gap-3">
                                         <div className="text-4xl">⚠️</div>
                                         <span className="text-red-500 text-base">Generate failed</span>
-                                        {onRetryVideo && videoId && (
-                                          <button
-                                            type="button"
-                                            onClick={() => onRetryVideo(videoId)}
-                                            data-alt="retry-button"
-                                            className="px-3 py-1.5 rounded-full bg-black/60 text-white text-sm inline-flex items-center gap-1 active:scale-95"
-                                            aria-label={'Retry'}
-                                          >
-                                            <RotateCcw className="w-4 h-4" />
-                                            Retry
-                                          </button>
-                                        )}
                                       </div>
                                     )}
                                     {status !== 0 && status !== 2 && (
                                         <span className="text-white/70 text-base">Pending</span>
                                     )}
-                                    {/* 失败重试按钮改为全局固定渲染，移出 slide */}
                                 </div>
                             )}
                         </div>
@@ -298,8 +261,10 @@ export function H5MediaViewer({
                 adaptiveHeight
             >
                 {imageUrls.map((url, idx) => (
-                    <div key={`h5-image-${idx}`} data-alt="image-slide" className="relative w-full h-full">
-                        <img src={url} alt="scene" className="w-full h-full object-contain" />
+                    <div key={`h5-image-${idx}`} data-alt="image-slide" className="relative w-full h-full flex justify-center">
+                        <img src={url} alt="scene" className="w-full h-full object-contain" style={{
+                            maxHeight: 'calc(100vh - 20rem)',
+                        }} />
                     </div>
                 ))}
             </Carousel>
@@ -403,8 +368,8 @@ export function H5MediaViewer({
     // 其他阶段：使用 Carousel
     return (
         <div ref={rootRef} data-alt="h5-media-viewer" className="w-[100vw] relative px-4">
-            {/* 左侧最终视频缩略图栏（H5） */}
-            {taskObject?.final?.url && (
+            {/* 左侧最终视频缩略图栏（H5） 视频暂停时展示 */}
+            {taskObject?.final?.url && !isPlaying && (
               <div className="absolute left-4 top-0 z-[60]" data-alt="final-sidebar-h5">
                 <div className="flex items-start">
                   {isFinalBarOpen && (
@@ -426,8 +391,8 @@ export function H5MediaViewer({
             {stage === 'final_video' && videoUrls.length > 0 && renderVideoSlides()}
             {stage === 'video' && videoUrls.length > 0 && renderVideoSlides()}
             {(stage === 'scene' || stage === 'character') && imageUrls.length > 0 && renderImageSlides()}
-            {/* 全局固定操作区（右上角） */}
-            {(stage === 'video' || stage === 'final_video') && (
+            {/* 全局固定操作区（右上角）视频暂停时展示 */}
+            {(stage === 'video' || stage === 'final_video') && !isPlaying && (
               <div data-alt="global-video-actions" className="absolute top-2 right-6 z-[60] flex items-center gap-2">
                 {stage === 'video' && (
                   <>
@@ -456,20 +421,25 @@ export function H5MediaViewer({
                         await downloadAllVideos(all);
                       }}
                     />
-                    <GlassIconButton
-                      data-alt="download-current-button"
-                      className="w-8 h-8 bg-gradient-to-br from-amber-500/80 to-yellow-600/80 backdrop-blur-xl border border-amber-400/30 rounded-full flex items-center justify-center hover:from-amber-400/80 hover:to-yellow-500/80 transition-all"
-                      icon={Download}
-                      size="sm"
-                      aria-label="download-current"
-                      onClick={async () => {
-                        const current = (taskObject.videos?.data ?? [])[activeIndex] as any;
-                        const hasUrl = current && Array.isArray(current.urls) && current.urls.length > 0;
-                        if (hasUrl) {
-                          await downloadVideo(current.urls[0]);
-                        }
-                      }}
-                    />
+                    {(() => {
+                      const status = (taskObject.videos?.data ?? [])[activeIndex]?.video_status;
+                      return status === 1 ? (
+                        <GlassIconButton
+                            data-alt="download-current-button"
+                            className="w-8 h-8 bg-gradient-to-br from-amber-500/80 to-yellow-600/80 backdrop-blur-xl border border-amber-400/30 rounded-full flex items-center justify-center hover:from-amber-400/80 hover:to-yellow-500/80 transition-all"
+                            icon={Download}
+                            size="sm"
+                            aria-label="download-current"
+                            onClick={async () => {
+                                const current = (taskObject.videos?.data ?? [])[activeIndex] as any;
+                                const hasUrl = current && Array.isArray(current.urls) && current.urls.length > 0;
+                                if (hasUrl) {
+                                await downloadVideo(current.urls[0]);
+                                }
+                            }}
+                        />
+                      ) : null;
+                    })()}
                     {(() => {
                       const status = (taskObject.videos?.data ?? [])[activeIndex]?.video_status;
                       return status === 2 ? (
@@ -518,7 +488,7 @@ export function H5MediaViewer({
             )}
             <style jsx global>{`
               [data-alt='carousel-wrapper'] .slick-slide { display: block; }
-              .slick-list { width: 100%;height: 100%; }
+              .slick-list { width: 100%;height: 100%;max-height: calc(100vh - 20rem); }
             `}</style>
         </div>
     );
diff --git a/components/pages/work-flow/H5TaskInfo.tsx b/components/pages/work-flow/H5TaskInfo.tsx
index db419b6..e458be5 100644
--- a/components/pages/work-flow/H5TaskInfo.tsx
+++ b/components/pages/work-flow/H5TaskInfo.tsx
@@ -80,7 +80,7 @@ const H5TaskInfo: React.FC<H5TaskInfoProps> = ({
     if (selectedView === 'final' && taskObject.final?.url) {
       return 'Final 1/1'
     }
-    if (selectedView === 'video') {
+    if (selectedView === 'video' && !['scene', 'character'].includes(taskObject.currentStage)) {
       const videosTotal = taskObject.videos?.total_count || taskObject.videos?.data?.length || 0
       return `Shots ${Math.max(displayCurrent, 1)}/${Math.max(videosTotal, 1)}`
     }
diff --git a/components/pages/work-flow/thumbnail-grid.tsx b/components/pages/work-flow/thumbnail-grid.tsx
index c45dcbd..fa291a7 100644
--- a/components/pages/work-flow/thumbnail-grid.tsx
+++ b/components/pages/work-flow/thumbnail-grid.tsx
@@ -18,6 +18,8 @@ interface ThumbnailGridProps {
   className: string;
   selectedView?: 'final' | 'video' | null;
   aspectRatio: AspectRatioValue;
+  cols: string;
+  isMobile: boolean;
 }
 
 /** 
@@ -31,7 +33,9 @@ export function ThumbnailGrid({
   onRetryVideo,
   className,
   selectedView,
-  aspectRatio
+  aspectRatio,
+  cols,
+  isMobile
 }: ThumbnailGridProps) {
   const [hoveredIndex, setHoveredIndex] = useState<number | null>(null);
 
@@ -191,7 +195,7 @@ export function ThumbnailGrid({
           key={`video-${urls}-${index}`}
           className={`relative aspect-auto rounded-lg overflow-hidden
             ${(currentSketchIndex === index && !disabled && selectedView !== 'final') ? 'ring-2 ring-blue-500 z-10' : 'hover:ring-2 hover:ring-blue-500/50'}
-            ${aspectRatio === 'VIDEO_ASPECT_RATIO_LANDSCAPE' ? 'min-w-[210px]' : 'min-w-[70px]'}
+            ${aspectRatio === 'VIDEO_ASPECT_RATIO_LANDSCAPE' ? `min-w-[${cols}]` : 'min-w-[70px]'}
             `}
           onClick={() => !isDragging && !disabled && onSketchSelect(index)}
         >
@@ -251,12 +255,16 @@ export function ThumbnailGrid({
 
           </div>
 
-          <div className='absolute bottom-0 left-0 right-0 p-2'>
-            <div className="inline-flex items-center px-2 py-1 rounded-full bg-green-500/20 backdrop-blur-sm">
-              <Video className="w-3 h-3 text-green-400 mr-1" />
-              <span className="text-xs text-green-400">{index + 1}</span>
+          {!isMobile && (
+            <div className='absolute bottom-0 left-0 right-0 p-2'>
+              <div className="inline-flex items-center px-2 py-1 rounded-full bg-green-500/20 backdrop-blur-sm">
+                <Video className="w-3 h-3 text-green-400 mr-1" />
+                <span className="text-xs text-green-400">{index + 1}</span>
+              </div>
             </div>
-          </div>
+          )}
+
+          
 
           {/* <div className="absolute bottom-0 left-0 right-0 p-2 bg-gradient-to-t from-black/60 to-transparent z-10">
             <span className="text-xs text-white/90">Scene {index + 1}</span>
@@ -276,7 +284,7 @@ export function ThumbnailGrid({
             key={sketch.uniqueId || `sketch-${sketch.url}-${index}`}
             className={`relative aspect-auto rounded-lg overflow-hidden
               ${currentSketchIndex === index ? 'ring-2 ring-blue-500 z-10' : 'hover:ring-2 hover:ring-blue-500/50'}
-              ${aspectRatio === 'VIDEO_ASPECT_RATIO_LANDSCAPE' ? 'min-w-[210px]' : 'min-w-[70px]'}
+              ${aspectRatio === 'VIDEO_ASPECT_RATIO_LANDSCAPE' ? `min-w-[${cols}]` : 'min-w-[70px]'}
               `}
             onClick={() => !isDragging && onSketchSelect(index)}
           >
@@ -307,29 +315,33 @@ export function ThumbnailGrid({
                 />
               </div>
             )}
-            <div className='absolute bottom-0 left-0 right-0 p-2'>
-              {/* 角色类型 */}
-              {sketch.type === 'role' && (
-                <div className="inline-flex items-center px-2 py-1 rounded-full bg-purple-500/20 backdrop-blur-sm">
-                  <SquareUserRound className="w-3 h-3 text-purple-400 mr-1" />
-                  <span className="text-xs text-purple-400">Role</span>
-                </div>
-              )}
-              {/* 场景类型 */}
-              {sketch.type === 'scene' && (
-                <div className="inline-flex items-center px-2 py-1 rounded-full bg-purple-500/20 backdrop-blur-sm">
-                  <MapPinHouse className="w-3 h-3 text-purple-400 mr-1" />
-                  <span className="text-xs text-purple-400">Scene</span>
-                </div>
-              )}
-              {/* 分镜类型 */}
-              {(!sketch.type || sketch.type === 'shot_sketch') && (
-                <div className="inline-flex items-center px-2 py-1 rounded-full bg-cyan-500/20 backdrop-blur-sm">
-                  <Clapperboard className="w-3 h-3 text-cyan-400 mr-1" />
-                  <span className="text-xs text-cyan-400">{index + 1}</span>
-                </div>
-              )}
-            </div>
+
+            {!isMobile && (
+              <div className='absolute bottom-0 left-0 right-0 p-2'>
+                {/* 角色类型 */}
+                {sketch.type === 'role' && (
+                  <div className="inline-flex items-center px-2 py-1 rounded-full bg-purple-500/20 backdrop-blur-sm">
+                    <SquareUserRound className="w-3 h-3 text-purple-400 mr-1" />
+                    <span className="text-xs text-purple-400">Role</span>
+                  </div>
+                )}
+                {/* 场景类型 */}
+                {sketch.type === 'scene' && (
+                  <div className="inline-flex items-center px-2 py-1 rounded-full bg-purple-500/20 backdrop-blur-sm">
+                    <MapPinHouse className="w-3 h-3 text-purple-400 mr-1" />
+                    <span className="text-xs text-purple-400">Scene</span>
+                  </div>
+                )}
+                {/* 分镜类型 */}
+                {(!sketch.type || sketch.type === 'shot_sketch') && (
+                  <div className="inline-flex items-center px-2 py-1 rounded-full bg-cyan-500/20 backdrop-blur-sm">
+                    <Clapperboard className="w-3 h-3 text-cyan-400 mr-1" />
+                    <span className="text-xs text-cyan-400">{index + 1}</span>
+                  </div>
+                )}
+              </div>
+            )}
+            
 
             {/* <div className="absolute bottom-0 left-0 right-0 p-2 bg-gradient-to-t from-black/60 to-transparent z-10">
               <span className="text-xs text-white/90">{sketch.type === 'role' ? 'Role' : (sketch.type === 'scene' ? 'Scene' : 'Shot')} {index + 1}</span>
@@ -344,7 +356,7 @@ export function ThumbnailGrid({
     <div
       ref={thumbnailsRef}
       tabIndex={0}
-      className={`w-full h-full grid grid-flow-col gap-2 overflow-x-auto hide-scrollbar px-1 py-1 cursor-grab active:cursor-grabbing focus:outline-none select-none ${className} auto-cols-max`}
+      className={`w-full h-full grid grid-flow-col gap-2 overflow-x-auto hide-scrollbar px-1 py-1 cursor-grab active:cursor-grabbing focus:outline-none select-none auto-cols-[${cols}] ${aspectRatio === 'VIDEO_ASPECT_RATIO_LANDSCAPE' ? '' : '!auto-cols-max'}`}
       autoFocus
       onMouseDown={handleMouseDown}
       onMouseMove={handleMouseMove}