/* ====== 404页面独享CSS部分 ====== */
        /* 几何背景元素 */
        .error-shape {
            position: absolute;
            border-radius: 50%;
            background: var(--gradient-accent);
            opacity: 0.05;
            z-index: -1;
            animation: floatShape 20s ease-in-out infinite;
        }
        
        .error-shape-1 {
            width: 800px;
            height: 800px;
            top: -400px;
            right: -400px;
            animation-delay: 0s;
        }
        
        .error-shape-2 {
            width: 600px;
            height: 600px;
            bottom: -200px;
            left: -300px;
            animation-delay: 5s;
        }
        
        .error-shape-3 {
            width: 400px;
            height: 400px;
            top: 30%;
            left: 10%;
            animation-delay: 10s;
        }
        
        @keyframes floatShape {
            0%, 100% { 
                transform: translateY(0) rotate(0deg); 
                opacity: 0.05;
            }
            25% { 
                transform: translateY(-40px) rotate(5deg); 
                opacity: 0.07;
            }
            50% { 
                transform: translateY(20px) rotate(-5deg); 
                opacity: 0.06;
            }
            75% { 
                transform: translateY(-20px) rotate(3deg); 
                opacity: 0.08;
            }
        }
        
        /* 404内容区域 - 水平居中显示 */
        .error-hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            overflow: hidden;
            padding: 120px 0 80px;
        }
        
        .error-container {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            text-align: center;
            max-width: 800px;
            width: 100%;
            margin: 0 auto;
            position: relative;
            z-index: 2;
        }
        
        .error-badge {
            display: inline-block;
            background: var(--gradient-accent);
            color: white;
            padding: 12px 30px;
            border-radius: 50px;
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 40px;
            box-shadow: 0 8px 20px rgba(0, 180, 216, 0.2);
            animation: pulseBadge 3s ease-in-out infinite;
        }
        
        @keyframes pulseBadge {
            0%, 100% { 
                transform: scale(1);
                box-shadow: 0 8px 20px rgba(0, 180, 216, 0.2);
            }
            50% { 
                transform: scale(1.05);
                box-shadow: 0 12px 30px rgba(0, 180, 216, 0.3);
            }
        }
        
        .error-code {
            font-size: 15rem;
            font-weight: 900;
            line-height: 1;
            margin-bottom: 20px;
            color: var(--primary);
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .error-digit {
            display: inline-block;
            position: relative;
            animation: bounceDigit 2s ease-in-out infinite;
        }
        
        .error-digit:nth-child(1) {
            animation-delay: 0s;
        }
        
        .error-digit:nth-child(2) {
            animation-delay: 0.1s;
        }
        
        .error-digit:nth-child(3) {
            animation-delay: 0.2s;
        }
        
        @keyframes bounceDigit {
            0%, 100% { 
                transform: translateY(0); 
            }
            30% { 
                transform: translateY(-40px); 
            }
            60% { 
                transform: translateY(10px); 
            }
        }
        
        .error-code:after {
            content: '';
            position: absolute;
            width: 100%;
            height: 10px;
            background: var(--gradient-accent);
            bottom: 30px;
            left: 0;
            border-radius: 5px;
            opacity: 0.3;
            filter: blur(8px);
            animation: glowLine 4s ease-in-out infinite;
        }
        
        @keyframes glowLine {
            0%, 100% { 
                opacity: 0.3;
                width: 100%;
            }
            50% { 
                opacity: 0.5;
                width: 110%;
                left: -5%;
            }
        }
        
        .error-title {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            color: var(--primary);
            margin-bottom: 25px;
        }
        
        .error-title span {
            background: var(--gradient-accent);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        
        .error-description {
            font-size: 1.2rem;
            color: #666;
            margin-bottom: 50px;
            max-width: 600px;
            line-height: 1.8;
        }
        
        .error-actions {
            display: flex;
            gap: 20px;
            margin-bottom: 60px;
            flex-wrap: wrap;
            justify-content: center;
        }
        
        .btn-primary {
            background: var(--gradient-accent);
            color: white;
            padding: 18px 40px;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            transition: var(--transition);
            box-shadow: 0 10px 30px rgba(0, 180, 216, 0.2);
            display: inline-flex;
            align-items: center;
            gap: 12px;
        }
        
        .btn-primary:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 40px rgba(0, 180, 216, 0.3);
        }
        
        .btn-secondary {
            background: transparent;
            color: var(--primary);
            padding: 18px 40px;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            transition: var(--transition);
            border: 2px solid rgba(15, 26, 54, 0.1);
            display: inline-flex;
            align-items: center;
            gap: 12px;
        }
        
        .btn-secondary:hover {
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-5px);
        }
        
        /* 错误原因与解决方案 */
        .error-info {
            padding: 80px 0;
            background: rgba(248, 249, 255, 0.5);
            position: relative;
        }
        
        .section-header {
            text-align: center;
            max-width: 800px;
            margin: 0 auto 80px;
        }
        
        .section-subtitle {
            display: inline-block;
            color: var(--accent);
            font-weight: 600;
            font-size: 1rem;
            letter-spacing: 2px;
            margin-bottom: 20px;
            text-transform: uppercase;
        }
        
        .section-title {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 20px;
            line-height: 1.2;
        }
        
        .section-desc {
            font-size: 1.1rem;
            color: #666;
            line-height: 1.8;
        }
        
        .error-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 30px;
        }
        
        .error-card {
            background: white;
            border-radius: var(--border-radius);
            padding: 40px;
            transition: var(--transition);
            box-shadow: var(--shadow);
            position: relative;
            overflow: hidden;
            text-align: center;
        }
        
        .error-card:hover {
            transform: translateY(-10px);
            box-shadow: var(--shadow-hover);
        }
        
        .error-card:before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 5px;
            background: var(--gradient-accent);
            transform: scaleX(0);
            transform-origin: left;
            transition: var(--transition);
        }
        
        .error-card:hover:before {
            transform: scaleX(1);
        }
        
        .error-icon-wrapper {
            width: 80px;
            height: 80px;
            background: rgba(0, 180, 216, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 30px;
            color: var(--accent);
            font-size: 2.5rem;
            transition: var(--transition);
        }
        
        .error-card:hover .error-icon-wrapper {
            background: var(--gradient-accent);
            color: white;
            transform: rotate(15deg);
        }
        
        .error-card h3 {
            font-size: 1.5rem;
            color: var(--primary);
            margin-bottom: 20px;
        }
        
        .error-card p {
            color: #666;
            margin-bottom: 25px;
            line-height: 1.7;
        }
        
        /* 热门页面推荐 */
        .popular-pages {
            padding: 100px 0;
        }
        
        .pages-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 30px;
        }
        
        .page-card {
            background: white;
            border-radius: var(--border-radius);
            padding: 35px 30px;
            transition: var(--transition);
            box-shadow: var(--shadow);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        
        .page-card:hover {
            transform: translateY(-10px);
            box-shadow: var(--shadow-hover);
        }
        
        .page-card:before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 5px;
            background: var(--gradient-accent);
            transform: scaleX(0);
            transform-origin: left;
            transition: var(--transition);
        }
        
        .page-card:hover:before {
            transform: scaleX(1);
        }
        
        .page-icon {
            width: 60px;
            height: 60px;
            background: rgba(0, 180, 216, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 25px;
            color: var(--accent);
            font-size: 1.8rem;
            transition: var(--transition);
        }
        
        .page-card:hover .page-icon {
            background: var(--gradient-accent);
            color: white;
            transform: rotate(15deg);
        }
        
        .page-card h3 {
            font-size: 1.4rem;
            color: var(--primary);
            margin-bottom: 15px;
        }
        
        .page-card p {
            color: #666;
            margin-bottom: 25px;
            font-size: 0.95rem;
            line-height: 1.6;
        }
        
        .page-link {
            color: var(--accent);
            text-decoration: none;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }
        
        .page-link:hover {
            gap: 12px;
        }
        
        /* 搜索框 */
        .search-section {
            padding: 60px 0;
            background: var(--gradient-primary);
            color: white;
            position: relative;
            overflow: hidden;
        }
        
        .search-section:before {
            content: '';
            position: absolute;
            width: 100%;
            height: 100%;
            top: 0;
            left: 0;
            background: url("data:image/svg+xml,%3Csvg width='100' height='20' viewBox='0 0 100 20' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M21.184 20c.357-.13.720-.264 1.088-.402l1.768-.661C33.64 15.347 39.647 14 50 14c10.271 0 15.362 1.222 24.629 4.928.955.383 1.869.74 2.75 1.072h6.225c-2.51-.73-5.139-1.691-8.233-2.928C65.888 13.278 60.562 12 50 12c-10.626 0-16.855 1.397-26.66 5.063l-1.767.662c-2.475.923-4.66 1.674-6.724 2.275h6.335zm0-20C13.258 2.892 8.077 4 0 4V2c5.744 0 9.951-.574 14.85-2h6.334zM77.38 0C85.239 2.966 90.502 4 100 4V2c-6.842 0-11.386-.542-16.396-2h-6.225zM0 14c8.44 0 13.718-1.21 22.272-4.402l1.768-.661C33.64 5.347 39.647 4 50 4c10.271 0 15.362 1.222 24.629 4.928C84.112 12.722 89.438 14 100 14v-2c-10.271 0-15.362-1.222-24.629-4.928C65.888 3.278 60.562 2 50 2 39.374 2 33.145 3.397 23.34 7.063l-1.767.662C13.223 10.84 8.163 12 0 12v2z' fill='%2300b4d8' fill-opacity='0.08' fill-rule='evenodd'/%3E%3C/svg%3E");
            opacity: 0.3;
        }
        
        .search-container {
            max-width: 700px;
            margin: 0 auto;
            text-align: center;
            position: relative;
            z-index: 2;
        }
        
        .search-title {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 15px;
            color: white;
        }
        
        .search-subtitle {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.9);
            margin-bottom: 40px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        
        .search-box {
            display: flex;
            background: white;
            border-radius: 50px;
            overflow: hidden;
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
        }
        
        .search-input {
            flex: 1;
            padding: 20px 30px;
            border: none;
            outline: none;
            font-size: 1.1rem;
            color: var(--primary);
        }
        
        .search-button {
            background: var(--gradient-accent);
            color: white;
            border: none;
            padding: 0 40px;
            font-weight: 600;
            font-size: 1.1rem;
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .search-button:hover {
            background: linear-gradient(135deg, #0077b6 0%, #005b8e 100%);
        }
        
        /* 响应式设计 */
        @media (max-width: 1200px) {
            .error-code {
                font-size: 12rem;
            }
            
            .error-title {
                font-size: 2.5rem;
            }
        }
        
        @media (max-width: 992px) {
            .error-hero {
                min-height: auto;
                padding: 150px 0 80px;
            }
            
            .error-code {
                font-size: 10rem;
            }
            
            .error-title {
                font-size: 2.2rem;
            }
            
            .section-title {
                font-size: 2.3rem;
            }
            
            .error-grid {
                grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            }
        }
        
        @media (max-width: 768px) {
            .error-code {
                font-size: 8rem;
            }
            
            .error-title {
                font-size: 1.9rem;
            }
            
            .error-actions {
                flex-direction: column;
                align-items: center;
            }
            
            .btn-primary, .btn-secondary {
                width: 100%;
                max-width: 300px;
                justify-content: center;
            }
            
            .section-title {
                font-size: 2rem;
            }
            
            .error-grid {
                grid-template-columns: 1fr;
            }
            
            .pages-grid {
                grid-template-columns: 1fr;
            }
            
            .search-box {
                flex-direction: column;
                border-radius: var(--border-radius);
            }
            
            .search-input {
                padding: 18px 25px;
                border-radius: var(--border-radius) var(--border-radius) 0 0;
            }
            
            .search-button {
                padding: 18px 25px;
                border-radius: 0 0 var(--border-radius) var(--border-radius);
                justify-content: center;
            }
        }
        
        @media (max-width: 480px) {
            .error-code {
                font-size: 6rem;
            }
            
            .error-title {
                font-size: 1.7rem;
            }
            
            .error-description {
                font-size: 1.1rem;
            }
            
            .section-title {
                font-size: 1.8rem;
            }
            
            .error-card, .page-card {
                padding: 30px 25px;
            }
        }