/* ===== 独享CSS部分 - 404页面 ===== */
        
        /* 404内容区 */
        .error-section {
            background: var(--light-color);
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 100vh;
            padding: 120px 0 80px;
        }

        .error-container {
            text-align: center;
            max-width: 600px;
            margin: 0 auto;
            padding: 50px;
            background: #fff;
            border-radius: 8px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
            transition: var(--transition);
        }

        .error-container:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
        }

        .error-icon {
            font-size: 8rem;
            color: var(--secondary-color);
            margin-bottom: 20px;
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0% { transform: scale(1); }
            50% { transform: scale(1.1); }
            100% { transform: scale(1); }
        }

        .error-code {
            font-size: 6rem;
            font-weight: 700;
            color: var(--primary-color);
            margin-bottom: 10px;
            line-height: 1;
        }

        .error-title {
            font-size: 2rem;
            color: var(--primary-color);
            margin-bottom: 20px;
        }

        .error-description {
            font-size: 1.2rem;
            color: var(--gray-color);
            margin-bottom: 30px;
            line-height: 1.6;
        }

        .error-actions {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
        }

        /* 快速链接区 */
        .quick-links-section {
            background: #fff;
        }

        .quick-links-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
        }

        .quick-link-card {
            background: var(--light-color);
            border-radius: 8px;
            padding: 30px;
            text-align: center;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: var(--transition);
        }

        .quick-link-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }

        .quick-link-icon {
            font-size: 2.5rem;
            color: var(--secondary-color);
            margin-bottom: 20px;
        }

        .quick-link-card h3 {
            font-size: 1.3rem;
            color: var(--primary-color);
            margin-bottom: 15px;
        }

        .quick-link-card p {
            color: var(--gray-color);
            margin-bottom: 20px;
        }

        /* 响应式设计 */
        @media (max-width: 992px) {
            .footer-content {
                grid-template-columns: repeat(2, 1fr);
            }
            
            .quick-links-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                position: fixed;
                top: 80px;
                left: -100%;
                width: 100%;
                height: calc(100vh - 80px);
                background: #fff;
                flex-direction: column;
                align-items: center;
                justify-content: flex-start;
                padding-top: 50px;
                transition: var(--transition);
                box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
            }
            
            .nav-menu.active {
                left: 0;
            }
            
            .nav-menu li {
                margin: 15px 0;
            }
            
            .hamburger {
                display: block;
            }
            
            .section {
                padding: 60px 0;
            }
            
            .section-title h2 {
                font-size: 2rem;
            }
            
            .error-container {
                padding: 30px;
            }
            
            .error-icon {
                font-size: 6rem;
            }
            
            .error-code {
                font-size: 4rem;
            }
            
            .error-title {
                font-size: 1.5rem;
            }
            
            .error-description {
                font-size: 1rem;
            }
            
            .quick-links-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 576px) {
            .footer-content {
                grid-template-columns: 1fr;
            }
            
            .error-container {
                padding: 20px;
            }
            
            .error-actions {
                flex-direction: column;
                align-items: center;
            }
            
            .btn {
                width: 100%;
                max-width: 250px;
            }
        }