/* ====== 本页面独享CSS ====== */
        /* 主内容区域 */
        .main-content {
            flex: 1;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 180px 0 100px;
            width: 100%;
        }

        /* 404错误容器 */
        .error-container {
            text-align: center;
            max-width: 800px;
            width: 100%;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 404数字特效 */
        .error-number {
            font-size: 12rem;
            font-weight: 800;
            color: var(--primary-color);
            margin-bottom: 20px;
            line-height: 1;
            position: relative;
            display: inline-block;
        }

        .error-number span {
            display: inline-block;
        }

        .error-number .digit-4 {
            color: var(--primary-color);
            animation: float 3s ease-in-out infinite;
        }

        .error-number .digit-0 {
            color: var(--secondary-color);
            animation: float 3s ease-in-out infinite 0.5s;
        }

        .error-number .digit-4-last {
            color: var(--accent-color);
            animation: float 3s ease-in-out infinite 1s;
        }

        @keyframes float {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-20px); }
        }

        .error-number::after {
            content: '';
            position: absolute;
            bottom: 20px;
            left: 50%;
            transform: translateX(-50%);
            width: 300px;
            height: 10px;
            background: radial-gradient(ellipse at center, rgba(10, 36, 99, 0.2) 0%, transparent 70%);
            border-radius: 50%;
            z-index: -1;
        }

        /* 错误标题 */
        .error-title {
            font-size: 2.5rem;
            color: var(--primary-color);
            margin-bottom: 20px;
        }

        /* 错误描述 */
        .error-description {
            font-size: 1.2rem;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto 40px;
            line-height: 1.6;
        }

        /* 搜索框样式 */
        .search-box {
            max-width: 500px;
            margin: 0 auto 50px;
            position: relative;
        }

        .search-input {
            width: 100%;
            padding: 18px 25px;
            border: 2px solid var(--border-color);
            border-radius: 50px;
            font-size: 1rem;
            font-family: 'Inter', sans-serif;
            transition: var(--transition);
            outline: none;
        }

        .search-input:focus {
            border-color: var(--secondary-color);
            box-shadow: 0 0 0 3px rgba(62, 146, 204, 0.1);
        }

        .search-btn {
            position: absolute;
            right: 8px;
            top: 50%;
            transform: translateY(-50%);
            background: var(--accent-gradient);
            color: white;
            border: none;
            border-radius: 50px;
            width: 45px;
            height: 45px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
        }

        .search-btn:hover {
            transform: translateY(-50%) scale(1.05);
            box-shadow: var(--shadow-md);
        }

        /* 操作按钮 */
        .action-buttons {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
            margin-top: 40px;
        }

        /* 快速链接 */
        .quick-links {
            margin-top: 60px;
            padding-top: 40px;
            border-top: 1px solid var(--border-color);
        }

        .quick-links h3 {
            font-size: 1.5rem;
            color: var(--primary-color);
            margin-bottom: 25px;
            text-align: center;
        }

        .links-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 15px;
            max-width: 700px;
            margin: 0 auto;
        }

        .link-item {
            background: rgba(10, 36, 99, 0.03);
            border-radius: var(--radius-md);
            padding: 15px 20px;
            text-align: center;
            transition: var(--transition);
            border: 1px solid transparent;
        }

        .link-item:hover {
            background: rgba(10, 36, 99, 0.05);
            border-color: var(--secondary-color);
            transform: translateY(-5px);
        }

        .link-item a {
            display: block;
            color: var(--primary-color);
            font-weight: 500;
        }

        .link-item a:hover {
            color: var(--accent-color);
        }

        /* 页面独享动画效果 */
        .error-number span {
            opacity: 0;
            transform: translateY(50px);
            transition: opacity 0.8s ease, transform 0.8s ease;
        }

        .error-number span.visible {
            opacity: 1;
            transform: translateY(0);
        }

        .search-box, .action-buttons, .quick-links {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.8s ease, transform 0.8s ease;
        }

        .search-box.visible, .action-buttons.visible, .quick-links.visible {
            opacity: 1;
            transform: translateY(0);
        }

        .link-item {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.5s ease, transform 0.5s ease, background-color 0.3s ease;
        }

        .link-item.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* 响应式调整 */
        @media (max-width: 992px) {
            .error-number {
                font-size: 10rem;
            }
            
            .error-title {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            .main-content {
                padding: 150px 0 80px;
            }
            
            .error-number {
                font-size: 8rem;
            }
            
            .error-number::after {
                width: 250px;
            }
            
            .error-title {
                font-size: 1.9rem;
            }
            
            .error-description {
                font-size: 1.1rem;
            }
            
            .action-buttons {
                flex-direction: column;
                align-items: center;
            }
        }

        @media (max-width: 576px) {
            .error-number {
                font-size: 6rem;
            }
            
            .error-number::after {
                width: 200px;
            }
            
            .error-title {
                font-size: 1.7rem;
            }
            
            .links-grid {
                grid-template-columns: 1fr;
            }
        }