* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            background-attachment: fixed;
            min-height: 100vh;
            color: #ffffff;
            overflow-x: hidden;
            line-height: 1.6;
        }

        /* 背景动画 */
        .bg-animation {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: -1;
            opacity: 0.1;
        }

        .bg-shape {
            position: absolute;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            animation: float 6s ease-in-out infinite;
        }

        .bg-shape:nth-child(1) {
            width: 80px;
            height: 80px;
            top: 20%;
            left: 10%;
            animation-delay: 0s;
        }

        .bg-shape:nth-child(2) {
            width: 60px;
            height: 60px;
            top: 60%;
            right: 10%;
            animation-delay: 2s;
        }

        .bg-shape:nth-child(3) {
            width: 100px;
            height: 100px;
            bottom: 20%;
            left: 20%;
            animation-delay: 4s;
        }

        /* 头部 */
        header {
            text-align: center;
            padding: 60px 20px 40px;
        }

        .logo {
            font-size: 3rem;
            font-weight: 800;
            margin-bottom: 10px;
            background: linear-gradient(45deg, #ff6b6b, #4ecdc4, #45b7d1, #96ceb4);
            background-size: 300% 300%;
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            animation: gradientShift 4s ease-in-out infinite;
            letter-spacing: -2px;
        }

        .tagline {
            font-size: 1.2rem;
            opacity: 0.9;
            font-weight: 300;
            letter-spacing: 1px;
        }

        /* 搜索框 */
        .search-container {
            max-width: 500px;
            margin: 40px auto 60px;
            position: relative;
        }

        .search-box {
            width: 100%;
            padding: 16px 50px 16px 20px;
            border: none;
            border-radius: 25px;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: white;
            font-size: 16px;
            outline: none;
            transition: all 0.3s ease;
        }

        .search-box::placeholder {
            color: rgba(255, 255, 255, 0.7);
        }

        .search-box:focus {
            background: rgba(255, 255, 255, 0.2);
            box-shadow: 0 8px 32px rgba(31, 38, 135, 0.37);
            transform: translateY(-2px);
        }

        .search-icon {
            position: absolute;
            right: 15px;
            top: 50%;
            transform: translateY(-50%);
            width: 20px;
            height: 20px;
            opacity: 0.7;
        }

        /* 游戏分类 */
        .categories {
            display: flex;
            justify-content: center;
            gap: 15px;
            margin-bottom: 50px;
            flex-wrap: wrap;
            padding: 0 20px;
        }

        .category-btn {
            padding: 12px 24px;
            border: none;
            border-radius: 20px;
            background: rgba(255, 255, 255, 0.1);
            color: white;
            cursor: pointer;
            font-size: 14px;
            font-weight: 500;
            transition: all 0.3s ease;
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .category-btn:hover,
        .category-btn.active {
            background: rgba(255, 255, 255, 0.2);
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
        }

        /* 游戏网格 */
        .games-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .games-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 25px;
            margin-bottom: 60px;
        }

        /* 3D 游戏卡片 */
        .game-card {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(15px);
            border-radius: 20px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            overflow: hidden;
            cursor: pointer;
            transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            transform-style: preserve-3d;
            position: relative;
            perspective: 1000px;
        }

        .game-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
            transition: left 0.5s;
            z-index: 1;
        }

        .game-card:hover {
            transform: scale(1.05);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
        }

        .game-card:hover::before {
            left: 100%;
        }

        .game-image {
            width: 100%;
            height: 160px;
            background: linear-gradient(135deg, #667eea, #764ba2);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 3rem;
            position: relative;
            overflow: hidden;
        }

        .game-image::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.1);
            transition: background 0.3s ease;
        }

        .game-card:hover .game-image::after {
            background: rgba(0, 0, 0, 0);
        }

        .game-info {
            padding: 20px;
            position: relative;
            z-index: 2;
        }

        .game-title {
            font-size: 1.3rem;
            font-weight: 600;
            margin-bottom: 8px;
            color: #ffffff;
        }

        .game-description {
            font-size: 0.9rem;
            opacity: 0.8;
            line-height: 1.4;
            margin-bottom: 15px;
        }

        .game-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .game-category {
            padding: 4px 12px;
            background: rgba(255, 255, 255, 0.2);
            border-radius: 12px;
            font-size: 0.8rem;
            font-weight: 500;
        }

        .play-btn {
            padding: 8px 16px;
            background: linear-gradient(45deg, #ff6b6b, #4ecdc4);
            border: none;
            border-radius: 15px;
            color: white;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            font-size: 0.9rem;
        }

        .play-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 16px rgba(255, 107, 107, 0.3);
        }

        /* 页脚 */
        footer {
            text-align: center;
            padding: 40px 20px;
            opacity: 0.7;
        }

        /* 动画定义 */
        @keyframes float {
            0%, 100% { transform: translateY(0px) rotate(0deg); }
            33% { transform: translateY(-10px) rotate(5deg); }
            66% { transform: translateY(5px) rotate(-3deg); }
        }

        @keyframes gradientShift {
            0%, 100% { background-position: 0% 50%; }
            50% { background-position: 100% 50%; }
        }

        /* 响应式设计 */
        @media (max-width: 768px) {
            .logo {
                font-size: 2.5rem;
            }
            
            .games-grid {
                grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
                gap: 20px;
            }
            
            .categories {
                gap: 10px;
            }
            
            .category-btn {
                padding: 10px 20px;
                font-size: 13px;
            }
        }
        
        @media (max-width: 480px) {
            .logo {
                font-size: 2rem;
            }
            
            .games-grid {
                grid-template-columns: 1fr;
            }
            
            .category-btn {
                padding: 8px 16px;
                font-size: 12px;
            }
        }
        
        /* 无障碍焦点样式 */
        .game-card:focus-within,
        .category-btn:focus,
        .search-box:focus {
            outline: 2px solid #ffffff;
            outline-offset: 2px;
        }
        
        /* 减少动画的偏好支持 */
        @media (prefers-reduced-motion: reduce) {
            .bg-shape,
            .logo,
            .game-card,
            .category-btn,
            .search-box {
                animation: none !important;
                transition: none !important;
            }
        }