/* 404页面独享CSS */
        main {
            margin-top: 80px;
            padding: 40px 0;
            flex: 1;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .error-container {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            text-align: center;
            width: 100%;
            max-width: 800px;
            margin: 0 auto;
            animation: fadeInUp 0.8s ease forwards;
            opacity: 0;
            transform: translateY(30px);
        }
        
        .error-number {
            font-size: 180px;
            font-weight: 900;
            color: var(--primary-color);
            line-height: 1;
            margin-bottom: 20px;
            text-shadow: 8px 8px 0 rgba(0, 0, 0, 0.1);
            position: relative;
            display: inline-block;
            animation: bounce 2s infinite alternate;
        }
        
        @keyframes bounce {
            0% {
                transform: translateY(0);
            }
            100% {
                transform: translateY(-20px);
            }
        }
        
        .error-number::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
            z-index: -1;
            opacity: 0.1;
            border-radius: 20px;
            transform: rotate(5deg);
        }
        
        .error-title {
            font-size: 36px;
            color: var(--primary-color);
            margin-bottom: 20px;
            position: relative;
            display: inline-block;
        }
        
        .error-title::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 3px;
            background: linear-gradient(90deg, var(--secondary-color), var(--accent-color));
        }
        
        .error-description {
            font-size: 18px;
            color: #666;
            max-width: 600px;
            margin: 0 auto 40px;
            line-height: 1.6;
        }
        
        .error-actions {
            display: flex;
            gap: 20px;
            margin-bottom: 50px;
            flex-wrap: wrap;
            justify-content: center;
        }
        
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 12px 30px;
            background: linear-gradient(135deg, var(--accent-color), #27ae60);
            color: white;
            border-radius: 30px;
            font-weight: 600;
            transition: var(--transition);
            border: none;
            cursor: pointer;
            font-size: 16px;
            box-shadow: 0 4px 15px rgba(46, 204, 113, 0.3);
        }
        
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
        }
        
        .btn-secondary {
            background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
            box-shadow: 0 4px 15px rgba(52, 152, 219, 0.3);
        }
        
        .error-search {
            background-color: white;
            padding: 30px;
            border-radius: 15px;
            box-shadow: var(--shadow);
            width: 100%;
            max-width: 500px;
            margin-bottom: 40px;
            animation: fadeInUp 0.8s ease forwards;
            opacity: 0;
            transform: translateY(30px);
            animation-delay: 0.2s;
        }
        
        .error-search h3 {
            font-size: 20px;
            color: var(--primary-color);
            margin-bottom: 15px;
        }
        
        .search-box {
            display: flex;
            gap: 10px;
        }
        
        .search-input {
            flex: 1;
            padding: 12px 15px;
            border: 1px solid #ddd;
            border-radius: 30px;
            font-size: 16px;
            transition: var(--transition);
        }
        
        .search-input:focus {
            outline: none;
            border-color: var(--secondary-color);
            box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
        }
        
        .search-btn {
            padding: 12px 20px;
            background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
            color: white;
            border: none;
            border-radius: 30px;
            cursor: pointer;
            transition: var(--transition);
            font-weight: 600;
        }
        
        .search-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
        }
        
        .error-links {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            width: 100%;
            max-width: 800px;
            animation: fadeInUp 0.8s ease forwards;
            opacity: 0;
            transform: translateY(30px);
            animation-delay: 0.4s;
        }
        
        .error-link-card {
            background-color: white;
            padding: 25px;
            border-radius: 10px;
            box-shadow: var(--shadow);
            transition: var(--transition);
            text-align: center;
        }
        
        .error-link-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
        }
        
        .error-link-icon {
            width: 60px;
            height: 60px;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 15px;
            color: white;
            font-size: 24px;
        }
        
        .error-link-card h4 {
            font-size: 18px;
            margin-bottom: 10px;
            color: var(--primary-color);
        }
        
        .error-link-card p {
            color: #666;
            font-size: 14px;
            margin-bottom: 15px;
        }
        
        .error-link-card a {
            color: var(--secondary-color);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 5px;
            transition: var(--transition);
        }
        
        .error-link-card a:hover {
            gap: 10px;
            color: var(--accent-color);
        }
        
        /* 动画关键帧 */
        @keyframes fadeInUp {
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        @keyframes float {
            0% {
                transform: translateY(0px);
            }
            50% {
                transform: translateY(-20px);
            }
            100% {
                transform: translateY(0px);
            }
        }
        
        /* 响应式设计 */
        @media (max-width: 768px) {
            .error-number {
                font-size: 120px;
            }
            
            .error-title {
                font-size: 28px;
            }
            
            .error-actions {
                flex-direction: column;
                align-items: center;
            }
            
            .btn {
                width: 100%;
                max-width: 250px;
                justify-content: center;
            }
            
            .search-box {
                flex-direction: column;
            }
            
            .error-links {
                grid-template-columns: 1fr;
            }
        }
        
        @media (max-width: 576px) {
            .error-number {
                font-size: 100px;
            }
            
            .error-title {
                font-size: 24px;
            }
            
            .error-description {
                font-size: 16px;
            }
        }