/* ====== 404页面独享CSS ====== */
        
        /* 404页面主区域 */
        .error-main {
            min-height: calc(100vh - 200px);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-top: 100px;
            padding: 100px 0;
            position: relative;
            overflow: hidden;
        }

        .error-main::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
            z-index: -2;
        }

        .error-main::after {
            content: '';
            position: absolute;
            top: -100px;
            right: -100px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(212, 175, 55, 0.05);
            z-index: -1;
            animation: float 15s infinite ease-in-out;
        }

        @keyframes float {
            0%, 100% {
                transform: translateY(0) rotate(0deg);
            }
            33% {
                transform: translateY(-20px) rotate(120deg);
            }
            66% {
                transform: translateY(20px) rotate(240deg);
            }
        }

        .error-container {
            display: flex;
            align-items: center;
            justify-content: center;
            flex-direction: column;
            text-align: center;
            max-width: 800px;
            margin: 0 auto;
            padding: 0 20px;
            position: relative;
            z-index: 2;
        }

        /* 404错误数字区域 */
        .error-number {
            font-size: 15rem;
            font-weight: 900;
            line-height: 1;
            color: var(--primary-color);
            margin-bottom: 20px;
            position: relative;
            display: inline-block;
            text-shadow: 0 10px 30px rgba(10, 36, 99, 0.2);
            animation: errorNumber 2s ease infinite alternate;
        }

        @keyframes errorNumber {
            0% {
                transform: scale(1) translateY(0);
                text-shadow: 0 10px 30px rgba(10, 36, 99, 0.2);
            }
            100% {
                transform: scale(1.05) translateY(-10px);
                text-shadow: 0 20px 40px rgba(10, 36, 99, 0.3);
            }
        }

        .error-number::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 120%;
            height: 120%;
            background: radial-gradient(circle, rgba(212, 175, 55, 0.1) 0%, transparent 70%);
            border-radius: 50%;
            z-index: -1;
            animation: pulse 3s infinite ease-in-out;
        }

        @keyframes pulse {
            0%, 100% {
                transform: translate(-50%, -50%) scale(1);
                opacity: 0.3;
            }
            50% {
                transform: translate(-50%, -50%) scale(1.1);
                opacity: 0.5;
            }
        }

        /* 错误信息区域 */
        .error-title {
            font-size: 3rem;
            color: var(--primary-color);
            margin-bottom: 20px;
            font-weight: 800;
            line-height: 1.2;
            animation: fadeDown 1s ease 0.3s both;
        }

        @keyframes fadeDown {
            0% {
                opacity: 0;
                transform: translateY(-30px);
            }
            100% {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .error-subtitle {
            font-size: 1.5rem;
            color: var(--gray-color);
            margin-bottom: 40px;
            max-width: 600px;
            animation: fadeUp 1s ease 0.5s both;
        }

        @keyframes fadeUp {
            0% {
                opacity: 0;
                transform: translateY(30px);
            }
            100% {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* 错误图标区域 */
        .error-icons {
            display: flex;
            justify-content: center;
            gap: 30px;
            margin-bottom: 50px;
            animation: fadeIn 1s ease 0.7s both;
        }

        @keyframes fadeIn {
            0% {
                opacity: 0;
            }
            100% {
                opacity: 1;
            }
        }

        .error-icon {
            width: 80px;
            height: 80px;
            background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2.5rem;
            color: white;
            box-shadow: 0 10px 20px rgba(10, 36, 99, 0.2);
            transition: var(--transition);
            animation: iconFloat 3s infinite ease-in-out;
        }

        .error-icon:nth-child(1) {
            animation-delay: 0s;
        }

        .error-icon:nth-child(2) {
            animation-delay: 0.5s;
        }

        .error-icon:nth-child(3) {
            animation-delay: 1s;
        }

        @keyframes iconFloat {
            0%, 100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-15px);
            }
        }

        .error-icon:hover {
            background: linear-gradient(135deg, var(--secondary-color), #e6c34f);
            transform: scale(1.1) rotate(10deg);
        }

        /* 错误提示区域 */
        .error-message {
            background-color: white;
            border-radius: var(--border-radius);
            padding: 40px;
            box-shadow: var(--shadow);
            margin-bottom: 40px;
            max-width: 700px;
            animation: slideUp 1s ease 0.9s both;
            border-left: 5px solid var(--secondary-color);
        }

        @keyframes slideUp {
            0% {
                opacity: 0;
                transform: translateY(30px);
            }
            100% {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .error-message h3 {
            font-size: 1.8rem;
            color: var(--primary-color);
            margin-bottom: 20px;
            font-weight: 700;
        }

        .error-message p {
            color: var(--gray-color);
            margin-bottom: 15px;
            line-height: 1.7;
        }

        .error-message ul {
            list-style-type: none;
            margin-top: 20px;
        }

        .error-message li {
            margin-bottom: 10px;
            padding-left: 25px;
            position: relative;
        }

        .error-message li::before {
            content: '•';
            position: absolute;
            left: 0;
            color: var(--secondary-color);
            font-size: 1.5rem;
        }

        /* 操作按钮区域 */
        .error-actions {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
            justify-content: center;
            animation: fadeIn 1s ease 1.1s both;
        }

        .error-action-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 15px 30px;
            border-radius: var(--border-radius);
            font-weight: 600;
            text-decoration: none;
            transition: var(--transition);
            min-width: 180px;
            justify-content: center;
        }

        .error-action-btn.primary {
            background-color: var(--primary-color);
            color: white;
            border: 2px solid var(--primary-color);
        }

        .error-action-btn.primary:hover {
            background-color: transparent;
            color: var(--primary-color);
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(10, 36, 99, 0.2);
        }

        .error-action-btn.secondary {
            background-color: var(--secondary-color);
            color: white;
            border: 2px solid var(--secondary-color);
        }

        .error-action-btn.secondary:hover {
            background-color: transparent;
            color: var(--secondary-color);
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(212, 175, 55, 0.2);
        }

        .error-action-btn.outline {
            background-color: transparent;
            color: var(--primary-color);
            border: 2px solid var(--primary-color);
        }

        .error-action-btn.outline:hover {
            background-color: var(--primary-color);
            color: white;
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(10, 36, 99, 0.2);
        }

        /* 搜索区域 */
        .error-search {
            margin-top: 50px;
            width: 100%;
            max-width: 600px;
            animation: fadeIn 1s ease 1.3s both;
        }

        .error-search h4 {
            font-size: 1.4rem;
            color: var(--primary-color);
            margin-bottom: 20px;
            font-weight: 700;
        }

        .search-box {
            display: flex;
            background-color: white;
            border-radius: var(--border-radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

        .search-box:focus-within {
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
            transform: translateY(-5px);
        }

        .search-input {
            flex-grow: 1;
            padding: 15px 20px;
            border: none;
            font-size: 1rem;
            outline: none;
        }

        .search-button {
            background-color: var(--primary-color);
            color: white;
            border: none;
            padding: 0 25px;
            cursor: pointer;
            transition: var(--transition);
            font-weight: 600;
        }

        .search-button:hover {
            background-color: var(--secondary-color);
        }

        /* 热门链接区域 */
        .popular-links {
            margin-top: 60px;
            animation: fadeIn 1s ease 1.5s both;
        }

        .popular-links h4 {
            font-size: 1.4rem;
            color: var(--primary-color);
            margin-bottom: 25px;
            font-weight: 700;
        }

        .links-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
        }

        .link-card {
            background-color: white;
            border-radius: var(--border-radius);
            padding: 25px;
            box-shadow: var(--shadow);
            transition: var(--transition);
            text-align: center;
        }

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

        .link-icon {
            width: 60px;
            height: 60px;
            background-color: rgba(10, 36, 99, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 1.8rem;
            color: var(--primary-color);
            transition: var(--transition);
        }

        .link-card:hover .link-icon {
            background-color: var(--primary-color);
            color: white;
            transform: scale(1.1);
        }

        .link-card h5 {
            font-size: 1.2rem;
            color: var(--primary-color);
            margin-bottom: 10px;
            font-weight: 700;
        }

        .link-card a {
            color: var(--gray-color);
            text-decoration: none;
            transition: var(--transition);
            font-weight: 600;
        }

        .link-card:hover a {
            color: var(--secondary-color);
        }

        /* 响应式设计 */
        @media (max-width: 992px) {
            .error-number {
                font-size: 12rem;
            }
            
            .error-title {
                font-size: 2.5rem;
            }
            
            .error-subtitle {
                font-size: 1.3rem;
            }
            
            .footer-content {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .hamburger {
                display: block;
            }
            
            .nav-menu {
                position: fixed;
                top: 70px;
                right: -100%;
                flex-direction: column;
                background-color: white;
                width: 100%;
                text-align: center;
                transition: 0.3s;
                box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
                padding: 20px 0;
                z-index: 999;
            }
            
            .nav-menu.active {
                right: 0;
            }
            
            .nav-menu li {
                margin: 15px 0;
            }
            
            .error-number {
                font-size: 9rem;
            }
            
            .error-title {
                font-size: 2rem;
            }
            
            .error-subtitle {
                font-size: 1.1rem;
            }
            
            .error-icons {
                gap: 15px;
            }
            
            .error-icon {
                width: 60px;
                height: 60px;
                font-size: 2rem;
            }
            
            .error-message {
                padding: 30px 20px;
            }
            
            .error-actions {
                flex-direction: column;
                align-items: center;
            }
            
            .error-action-btn {
                width: 100%;
                max-width: 300px;
            }
            
            .search-box {
                flex-direction: column;
            }
            
            .search-input {
                padding: 15px;
            }
            
            .search-button {
                padding: 15px;
            }
            
            .footer-content {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 576px) {
            .error-main {
                padding: 60px 0;
                margin-top: 80px;
            }
            
            .error-number {
                font-size: 7rem;
            }
            
            .error-title {
                font-size: 1.7rem;
            }
            
            .error-subtitle {
                font-size: 1rem;
            }
            
            .error-icon {
                width: 50px;
                height: 50px;
                font-size: 1.6rem;
            }
            
            .error-message {
                padding: 25px 15px;
            }
            
            .error-message h3 {
                font-size: 1.5rem;
            }
            
            .links-grid {
                grid-template-columns: 1fr;
            }
        }