/* ===== 独享CSS部分 - 404页面 ===== */
        .error-section {
            padding-top: 150px;
            padding-bottom: 100px;
            background: #f8f9fa;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .error-container {
            text-align: center;
            max-width: 700px;
            width: 100%;
            margin: 0 auto;
            padding: 0 20px;
        }

        .error-content {
            background: white;
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
            padding: 60px 40px;
            position: relative;
            overflow: hidden;
            transition: var(--transition);
        }

        .error-content:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
        }

        .error-content::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 5px;
            background: var(--gradient-primary);
        }

        .error-icon {
            font-size: 8rem;
            color: var(--primary-color);
            margin-bottom: 30px;
            animation: float 4s ease-in-out infinite;
            position: relative;
        }

        .error-icon::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 150px;
            height: 150px;
            border-radius: 50%;
            background: rgba(26, 60, 110, 0.1);
            z-index: -1;
            animation: pulse 3s infinite;
        }

        .error-title {
            font-size: 5rem;
            color: var(--primary-color);
            margin-bottom: 20px;
            font-weight: 800;
            position: relative;
            display: inline-block;
        }

        .error-title::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 100px;
            height: 4px;
            background: var(--gradient-secondary);
            border-radius: 2px;
        }

        .error-subtitle {
            font-size: 1.8rem;
            color: var(--accent-color);
            margin-bottom: 20px;
        }

        .error-description {
            color: var(--text-light);
            font-size: 1.1rem;
            line-height: 1.7;
            margin-bottom: 40px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }

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

        .quick-links {
            margin-top: 50px;
            padding-top: 30px;
            border-top: 1px solid #e9ecef;
        }

        .quick-links h3 {
            font-size: 1.4rem;
            color: var(--primary-color);
            margin-bottom: 20px;
        }

        .links-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 15px;
        }

        .link-item {
            background: var(--light-color);
            padding: 15px;
            border-radius: var(--border-radius);
            transition: var(--transition);
            text-align: center;
        }

        .link-item:hover {
            background: var(--primary-color);
            color: white;
            transform: translateY(-5px);
        }

        .link-item i {
            margin-right: 8px;
            color: var(--secondary-color);
        }

        .link-item:hover i {
            color: white;
        }

        /* 响应式设计 - 独享部分 */
        @media (max-width: 768px) {
            .nav-links, .phone-number {
                display: none;
            }
            
            .mobile-menu-btn {
                display: block;
            }
            
            .error-section {
                padding-top: 120px;
            }
            
            .error-title {
                font-size: 4rem;
            }
            
            .error-icon {
                font-size: 6rem;
            }
            
            .error-content {
                padding: 40px 25px;
            }
            
            .error-actions {
                flex-direction: column;
                align-items: center;
            }
            
            .footer-content {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 576px) {
            .error-section {
                padding: 100px 0 60px;
            }
            
            .error-title {
                font-size: 3rem;
            }
            
            .error-icon {
                font-size: 5rem;
            }
            
            .error-subtitle {
                font-size: 1.5rem;
            }
            
            .links-grid {
                grid-template-columns: 1fr;
            }
            
            .footer-content {
                grid-template-columns: 1fr;
            }
        }