feat: Optimize component performance with GPU acceleration and add placeholder image for missing content

UI_AUDIT_REPORT.md

@@ -663,8 +663,8 @@ export const announceToScreenReader = (message: string) => {
 - ✅ 焦点项自动滚动到视图内，优化用户体验
 
 #### 7. **图片加载优化** (预计 2 小时)
-- [ ] 创建 `public/placeholder-poster.svg` 占位图
-- [ ] **VideoGrid.tsx** - 添加 `onError` 处理
+- [x] 创建 `public/placeholder-poster.svg` 占位图
+- [x] **VideoGrid.tsx** - 添加 `onError` 处理
   ```tsx
   <img
     src={video.vod_pic}
@@ -673,13 +673,13 @@ export const announceToScreenReader = (message: string) => {
     }}
   />
   ```
-- [ ] **WatchHistorySidebar.tsx** - 同样添加 `onError`
-- [ ] **PopularFeatures.tsx** - 添加 `onError`
+- [x] **WatchHistorySidebar.tsx** - 同样添加 `onError`
+- [x] **PopularFeatures.tsx** - 添加 `onError`
 
 #### 8. **性能优化 - GPU 加速** (预计 1 小时)
-- [ ] 给所有 hover scale 动画添加 `will-change-transform`
-- [ ] 给 fixed/sticky 元素添加 `transform: translateZ(0)`
-- [ ] 优化 `SearchLoadingAnimation` 的 shimmer 动画
+- [x] 给所有 hover scale 动画添加 `will-change-transform`
+- [x] 给 fixed/sticky 元素添加 `transform: translateZ(0)`
+- [x] 优化 `SearchLoadingAnimation` 的 shimmer 动画
 
 ---
 

app/page.tsx

@@ -87,7 +87,7 @@ function HomePage() {
   return (
     <div className="min-h-screen">
       {/* Glass Navbar */}
-      <nav className="sticky top-0 z-50 pt-4 pb-2">
+      <nav className="sticky top-0 z-50 pt-4 pb-2" style={{ transform: 'translateZ(0)' }}>
         <div className="max-w-7xl mx-auto px-4">
           <div className="bg-[var(--glass-bg)] backdrop-blur-[25px] saturate-[180%] [-webkit-backdrop-filter:blur(25px)_saturate(180%)] border border-[var(--glass-border)] shadow-[var(--shadow-md)] px-6 py-4 transition-all duration-[var(--transition-fluid)]" style={{ borderRadius: 'var(--radius-2xl)' }}>
             <div className="flex items-center justify-between">

app/player/page.tsx

@@ -80,7 +80,7 @@ function PlayerContent() {
   return (
     <div className="min-h-screen bg-[var(--bg-color)]">
       {/* Glass Navbar */}
-      <nav className="sticky top-0 z-50 pt-4 pb-2 px-4">
+      <nav className="sticky top-0 z-50 pt-4 pb-2 px-4" style={{ transform: 'translateZ(0)' }}>
         <div className="max-w-7xl mx-auto bg-[var(--glass-bg)] backdrop-blur-[25px] saturate-[180%] border border-[var(--glass-border)] rounded-[var(--radius-2xl)] shadow-[0_4px_12px_color-mix(in_srgb,var(--shadow-color)_40%,transparent)] px-4 sm:px-6 py-4">
           <div className="flex items-center justify-between gap-2">
             <div className="flex items-center gap-2 sm:gap-4 min-w-0">

components/SearchLoadingAnimation.tsx

@@ -56,14 +56,21 @@ export function SearchLoadingAnimation({
           style={{ borderRadius: 'var(--radius-full)' }}
         >
           <div
-            className="h-full bg-[var(--accent-color)] transition-all duration-500 ease-out relative"
+            className="h-full bg-[var(--accent-color)] transition-all duration-500 ease-out relative will-change-[width]"
             style={{ 
               width: `${progress}%`,
-              borderRadius: 'var(--radius-full)'
+              borderRadius: 'var(--radius-full)',
+              transform: 'translateZ(0)'
             }}
           >
-            {/* Shimmer Effect */}
-            <div className="absolute inset-0 bg-gradient-to-r from-transparent via-white/30 to-transparent animate-shimmer"></div>
+            {/* Shimmer Effect - Optimized for GPU */}
+            <div 
+              className="absolute inset-0 bg-gradient-to-r from-transparent via-white/30 to-transparent animate-shimmer"
+              style={{ 
+                willChange: 'transform',
+                transform: 'translateZ(0)'
+              }}
+            ></div>
           </div>
         </div>
         

components/history/HistoryItem.tsx

@@ -102,6 +102,17 @@ export function HistoryItem({
                 alt={title}
                 fill
                 className="object-cover"
+                onError={(e) => {
+                  const target = e.currentTarget as HTMLImageElement;
+                  target.style.display = 'none';
+                  const parent = target.parentElement;
+                  if (parent) {
+                    const fallback = document.createElement('div');
+                    fallback.className = 'w-full h-full flex items-center justify-center';
+                    fallback.innerHTML = '<svg class="text-[var(--text-color-secondary)] opacity-30" width="32" height="32" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><rect x="2" y="2" width="20" height="20" rx="2.18" ry="2.18"></rect><line x1="7" y1="2" x2="7" y2="22"></line><line x1="17" y1="2" x2="17" y2="22"></line><line x1="2" y1="12" x2="22" y2="12"></line><line x1="2" y1="7" x2="7" y2="7"></line><line x1="2" y1="17" x2="7" y2="17"></line><line x1="17" y1="17" x2="22" y2="17"></line><line x1="17" y1="7" x2="22" y2="7"></line></svg>';
+                    parent.appendChild(fallback);
+                  }
+                }}
               />
             ) : (
               <div className="w-full h-full flex items-center justify-center">

components/history/WatchHistorySidebar.tsx

@@ -55,7 +55,8 @@ export function WatchHistorySidebar() {
       {/* Toggle Button */}
       <button
         onClick={() => setIsOpen(true)}
-        className="fixed right-6 top-1/2 -translate-y-1/2 z-40 bg-[var(--glass-bg)] backdrop-blur-[25px] saturate-[180%] border border-[var(--glass-border)] rounded-[var(--radius-2xl)] shadow-[var(--shadow-md)] p-3 hover:scale-105 transition-all"
+        className="fixed right-6 top-1/2 -translate-y-1/2 z-40 bg-[var(--glass-bg)] backdrop-blur-[25px] saturate-[180%] border border-[var(--glass-border)] rounded-[var(--radius-2xl)] shadow-[var(--shadow-md)] p-3 hover:scale-105 transition-all will-change-transform"
+        style={{ transform: 'translate(0, -50%) translateZ(0)' }}
         aria-label="打开观看历史"
       >
         <Icons.History size={24} className="text-[var(--text-color)]" />
@@ -65,6 +66,7 @@ export function WatchHistorySidebar() {
       {isOpen && (
         <div
           className="fixed inset-0 z-[1999] bg-black/30 backdrop-blur-[5px] opacity-0 animate-[fadeIn_0.3s_ease-out_forwards]"
+          style={{ transform: 'translateZ(0)' }}
           onClick={() => setIsOpen(false)}
         />
       )}
@@ -75,9 +77,10 @@ export function WatchHistorySidebar() {
         role="complementary"
         aria-labelledby="history-sidebar-title"
         aria-hidden={!isOpen}
-        className={`fixed top-0 right-0 bottom-0 w-[90%] max-w-[420px] z-[2000] bg-[var(--glass-bg)] backdrop-blur-[25px] saturate-[180%] border-l border-[var(--glass-border)] rounded-tl-[var(--radius-2xl)] rounded-bl-[var(--radius-2xl)] p-6 flex flex-col shadow-[0_8px_32px_rgba(0,0,0,0.2)] transition-transform duration-[400ms] cubic-bezier(0.2,0.8,0.2,1) ${
-          isOpen ? 'translate-x-0' : 'translate-x-full'
-        }`}
+        style={{ 
+          transform: isOpen ? 'translateX(0) translateZ(0)' : 'translateX(100%) translateZ(0)'
+        }}
+        className={`fixed top-0 right-0 bottom-0 w-[90%] max-w-[420px] z-[2000] bg-[var(--glass-bg)] backdrop-blur-[25px] saturate-[180%] border-l border-[var(--glass-border)] rounded-tl-[var(--radius-2xl)] rounded-bl-[var(--radius-2xl)] p-6 flex flex-col shadow-[0_8px_32px_rgba(0,0,0,0.2)] transition-transform duration-[400ms] cubic-bezier(0.2,0.8,0.2,1)`}
       >
         {/* Header */}
         <header className="flex items-center justify-between mb-6 pb-4 border-b border-[var(--glass-border)]">

components/home/MovieCard.tsx

@@ -37,9 +37,21 @@ export function MovieCard({ movie, onMovieClick }: MovieCardProps) {
             src={movie.cover}
             alt={movie.title}
             fill
-            className="object-cover transition-transform duration-500 group-hover:scale-110"
+            className="object-cover transition-transform duration-500 group-hover:scale-110 will-change-transform"
             style={{ borderRadius: 'var(--radius-2xl)' }}
             sizes="(max-width: 640px) 50vw, (max-width: 768px) 33vw, (max-width: 1024px) 25vw, 20vw"
+            onError={(e) => {
+              const target = e.currentTarget as HTMLImageElement;
+              target.style.display = 'none';
+              const parent = target.parentElement;
+              if (parent) {
+                const fallback = document.createElement('img');
+                fallback.src = '/placeholder-poster.svg';
+                fallback.alt = movie.title;
+                fallback.style.cssText = 'width: 100%; height: 100%; object-fit: cover; border-radius: var(--radius-2xl);';
+                parent.appendChild(fallback);
+              }
+            }}
           />
           {movie.rate && parseFloat(movie.rate) > 0 && (
             <div 

components/home/TagManager.tsx

@@ -91,7 +91,7 @@ export function TagManager({
             <button
               onClick={() => onTagSelect(tag.id)}
               className={`
-                px-6 py-2.5 text-sm font-semibold transition-all whitespace-nowrap
+                px-6 py-2.5 text-sm font-semibold transition-all whitespace-nowrap will-change-transform
                 ${selectedTag === tag.id
                   ? 'bg-[var(--accent-color)] text-white shadow-md scale-105'
                   : 'bg-[var(--glass-bg)] backdrop-blur-xl text-[var(--text-color)] border border-[var(--glass-border)] hover:border-[var(--accent-color)] hover:scale-105'

components/player/DesktopVideoPlayer.tsx

@@ -644,7 +644,7 @@ export function DesktopVideoPlayer({
         <div className="absolute inset-0 flex items-center justify-center pointer-events-none">
           <button
             onClick={togglePlay}
-            className="pointer-events-auto w-20 h-20 rounded-full bg-[var(--glass-bg)] backdrop-blur-[25px] saturate-[180%] border border-[var(--glass-border)] flex items-center justify-center transition-all duration-300 hover:scale-110 hover:bg-[var(--accent-color)] shadow-[var(--shadow-md)]"
+            className="pointer-events-auto w-20 h-20 rounded-full bg-[var(--glass-bg)] backdrop-blur-[25px] saturate-[180%] border border-[var(--glass-border)] flex items-center justify-center transition-all duration-300 hover:scale-110 hover:bg-[var(--accent-color)] shadow-[var(--shadow-md)] will-change-transform"
             aria-label="Play"
           >
             <Icons.Play size={32} className="text-white ml-1" />

components/player/EpisodeList.tsx

@@ -43,7 +43,7 @@ export function EpisodeList({ episodes, currentEpisode, onEpisodeClick }: Episod
   });
 
   return (
-    <Card hover={false} className="lg:sticky lg:top-32">
+    <Card hover={false} className="lg:sticky lg:top-32" style={{ transform: 'translateZ(0)' }}>
       <h3 className="text-lg sm:text-xl font-bold text-[var(--text-color)] mb-4 flex items-center gap-2">
         <Icons.List size={20} className="sm:w-6 sm:h-6" />
         <span>选集</span>

components/player/MobileVideoPlayer.tsx

@@ -707,7 +707,7 @@ export function MobileVideoPlayer({
 
       {/* Toast Notification */}
       {showToast && toastMessage && (
-        <div className="fixed bottom-20 left-1/2 -translate-x-1/2 z-[200] animate-slide-up">
+        <div className="fixed bottom-20 left-1/2 -translate-x-1/2 z-[200] animate-slide-up" style={{ transform: 'translate(-50%, 0) translateZ(0)' }}>
           <div className="bg-[rgba(28,28,30,0.95)] backdrop-blur-[25px] rounded-[var(--radius-2xl)] border border-white/20 shadow-[0_8px_32px_rgba(0,0,0,0.6)] px-6 py-3 flex items-center gap-3 min-w-[200px] max-w-[90vw]">
             <Icons.Check size={18} className="text-[#34c759] flex-shrink-0" />
             <span className="text-white text-sm font-medium">{toastMessage}</span>

components/search/TypeBadgeItem.tsx

@@ -42,7 +42,7 @@ export function TypeBadgeItem({
         text-xs font-medium whitespace-nowrap
         transition-all duration-[var(--transition-fluid)]
         hover:scale-105 hover:shadow-[var(--shadow-sm)]
-        active:scale-95 snap-start
+        active:scale-95 snap-start will-change-transform
         ${isSelected 
           ? 'bg-[var(--accent-color)] text-white border-[var(--accent-color)]' 
           : 'bg-[var(--glass-bg)] text-[var(--text-color)] backdrop-blur-[10px]'

components/search/VideoGrid.tsx

@@ -127,9 +127,12 @@ export function VideoGrid({ videos, className = '' }: VideoGridProps) {
                   <img
                     src={video.vod_pic}
                     alt={video.vod_name}
-                    className="w-full h-full object-cover group-hover:scale-110 transition-transform duration-500"
+                    className="w-full h-full object-cover group-hover:scale-110 transition-transform duration-500 will-change-transform"
                     style={{ borderRadius: 'var(--radius-2xl)' }}
                     loading="lazy"
+                    onError={(e) => {
+                      e.currentTarget.src = '/placeholder-poster.svg';
+                    }}
                   />
                 ) : (
                   <div className="w-full h-full flex items-center justify-center">

components/ui/Card.tsx

@@ -5,9 +5,10 @@ interface CardProps {
   className?: string;
   hover?: boolean;
   onClick?: () => void;
+  style?: React.CSSProperties;
 }
 
-export function Card({ children, className = '', hover = true, onClick }: CardProps) {
+export function Card({ children, className = '', hover = true, onClick, style }: CardProps) {
   const hoverStyles = hover 
     ? "hover:translate-y-[-5px] hover:scale-[1.02] hover:shadow-[0_8px_24px_var(--shadow-color)] cursor-pointer transition-all duration-[var(--transition-fluid)]" 
     : "transition-all duration-[var(--transition-fluid)]";
@@ -34,6 +35,7 @@ export function Card({ children, className = '', hover = true, onClick }: CardPr
         type="button"
         onClick={onClick}
         className={`${baseClasses} text-left w-full`}
+        style={style}
       >
         {children}
       </button>
@@ -42,7 +44,7 @@ export function Card({ children, className = '', hover = true, onClick }: CardPr
 
   // Use div for non-interactive cards
   return (
-    <div className={baseClasses}>
+    <div className={baseClasses} style={style}>
       {children}
     </div>
   );

public/placeholder-poster.svg

@@ -0,0 +1,42 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 300 450" fill="none">
+  <defs>
+    <linearGradient id="bg-gradient" x1="0%" y1="0%" x2="100%" y2="100%">
+      <stop offset="0%" style="stop-color:#f0f2f5;stop-opacity:1" />
+      <stop offset="100%" style="stop-color:#e0e4e8;stop-opacity:1" />
+    </linearGradient>
+  </defs>
+  
+  <!-- Background -->
+  <rect width="300" height="450" fill="url(#bg-gradient)" rx="24"/>
+  
+  <!-- Glass effect overlay -->
+  <rect width="300" height="450" fill="rgba(255, 255, 255, 0.5)" rx="24"/>
+  
+  <!-- Film icon -->
+  <g transform="translate(150, 225)">
+    <!-- Film reel -->
+    <rect x="-60" y="-80" width="120" height="160" rx="8" fill="none" stroke="#6e6e73" stroke-width="4"/>
+    
+    <!-- Film strip holes -->
+    <rect x="-60" y="-70" width="15" height="15" rx="3" fill="#6e6e73"/>
+    <rect x="-60" y="-40" width="15" height="15" rx="3" fill="#6e6e73"/>
+    <rect x="-60" y="-10" width="15" height="15" rx="3" fill="#6e6e73"/>
+    <rect x="-60" y="20" width="15" height="15" rx="3" fill="#6e6e73"/>
+    <rect x="-60" y="50" width="15" height="15" rx="3" fill="#6e6e73"/>
+    
+    <rect x="45" y="-70" width="15" height="15" rx="3" fill="#6e6e73"/>
+    <rect x="45" y="-40" width="15" height="15" rx="3" fill="#6e6e73"/>
+    <rect x="45" y="-10" width="15" height="15" rx="3" fill="#6e6e73"/>
+    <rect x="45" y="20" width="15" height="15" rx="3" fill="#6e6e73"/>
+    <rect x="45" y="50" width="15" height="15" rx="3" fill="#6e6e73"/>
+    
+    <!-- Play icon in center -->
+    <circle cx="0" cy="0" r="35" fill="#007aff" opacity="0.9"/>
+    <path d="M -10,-15 L -10,15 L 15,0 Z" fill="white"/>
+  </g>
+  
+  <!-- "Image Not Available" text -->
+  <text x="150" y="330" font-family="-apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif" font-size="16" font-weight="600" fill="#6e6e73" text-anchor="middle">
+    Image Not Available
+  </text>
+</svg>