/* ====== 404页面独享CSS ====== */
        
        /* 404页面主内容区 */
        .error-main {
            flex: 1;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 8rem 0 6rem;
            position: relative;
            overflow: hidden;
        }
        
        .error-container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            text-align: center;
        }
        
        /* 404数字特效 */
        .error-number {
            position: relative;
            margin-bottom: 2rem;
        }
        
        .error-digits {
            font-size: clamp(8rem, 20vw, 15rem);
            font-weight: 900;
            background: linear-gradient(90deg, var(--primary), var(--secondary), var(--accent));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            line-height: 1;
            position: relative;
            z-index: 2;
            text-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
        }
        
        .error-number::before {
            content: '404';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            font-size: clamp(10rem, 22vw, 17rem);
            font-weight: 900;
            color: rgba(13, 27, 42, 0.03);
            z-index: 1;
            white-space: nowrap;
        }
        
        /* 404内容区域 */
        .error-content {
            max-width: 700px;
            margin: 0 auto;
            position: relative;
            z-index: 3;
        }
        
        .error-content h1 {
            margin-bottom: 1.5rem;
            color: var(--primary);
        }
        
        .error-content p {
            font-size: 1.2rem;
            margin-bottom: 2.5rem;
            color: var(--gray);
        }
        
        /* 搜索和操作区域 */
        .error-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            justify-content: center;
            margin-top: 3rem;
            margin-bottom: 4rem;
        }
        
        .error-search {
            position: relative;
            max-width: 500px;
            width: 100%;
            margin: 0 auto 3rem;
        }
        
        .error-search input {
            width: 100%;
            padding: 1.2rem 2rem;
            padding-right: 70px;
            border: 2px solid rgba(141, 153, 174, 0.3);
            border-radius: 50px;
            font-size: 1.1rem;
            font-family: 'Space Grotesk', sans-serif;
            transition: var(--transition);
            background-color: white;
            box-shadow: var(--shadow-sm);
        }
        
        .error-search input:focus {
            outline: none;
            border-color: var(--accent);
            box-shadow: 0 10px 25px rgba(78, 205, 196, 0.2);
        }
        
        .search-btn {
            position: absolute;
            right: 10px;
            top: 50%;
            transform: translateY(-50%);
            width: 50px;
            height: 50px;
            background-color: var(--secondary);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            border: none;
            cursor: pointer;
            transition: var(--transition);
        }
        
        .search-btn:hover {
            background-color: var(--primary);
            transform: translateY(-50%) scale(1.1);
        }
        
        /* 快速链接 */
        .quick-links {
            margin-top: 4rem;
            width: 100%;
        }
        
        .quick-links h3 {
            margin-bottom: 2rem;
            color: var(--primary);
        }
        
        .links-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 2rem;
            max-width: 1000px;
            margin: 0 auto;
        }
        
        .link-card {
            background: white;
            border-radius: var(--border-radius);
            padding: 2.5rem;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            text-align: center;
            border: 1px solid rgba(141, 153, 174, 0.1);
        }
        
        .link-card:hover {
            transform: translateY(-10px);
            box-shadow: var(--shadow-lg);
            border-color: var(--accent);
        }
        
        .link-icon {
            width: 80px;
            height: 80px;
            background-color: rgba(78, 205, 196, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            color: var(--accent);
            margin: 0 auto 1.5rem;
            transition: var(--transition);
        }
        
        .link-card:hover .link-icon {
            background-color: var(--secondary);
            color: white;
            transform: rotate(15deg) scale(1.1);
        }
        
        .link-card h4 {
            margin-bottom: 1rem;
            color: var(--primary);
        }
        
        .link-card p {
            font-size: 1rem;
            margin-bottom: 1.5rem;
        }
        
        /* 404图形元素 */
        .error-graphic {
            position: absolute;
            z-index: 1;
            opacity: 0.7;
        }
        
        .error-circle {
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: radial-gradient(circle, var(--accent) 0%, transparent 70%);
            top: 15%;
            right: 10%;
            filter: blur(30px);
            animation: float 8s ease-in-out infinite;
        }
        
        .error-square {
            width: 200px;
            height: 200px;
            border-radius: 30px;
            background: radial-gradient(circle, var(--secondary) 0%, transparent 70%);
            bottom: 20%;
            left: 10%;
            filter: blur(30px);
            animation: float 10s ease-in-out infinite reverse;
        }
        
        /* 响应式设计 */
        @media (max-width: 1200px) {
            .links-grid {
                grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            }
        }
        
        @media (max-width: 992px) {
            .error-main {
                padding: 10rem 0 4rem;
            }
            
            .error-circle {
                width: 200px;
                height: 200px;
                right: 5%;
            }
            
            .error-square {
                width: 150px;
                height: 150px;
                left: 5%;
            }
        }
        
        @media (max-width: 768px) {
            .container {
                padding: 0 1.5rem;
            }
            
            .error-main {
                padding: 8rem 0 3rem;
            }
            
            .nav-menu {
                position: fixed;
                top: 0;
                right: -100%;
                width: 80%;
                height: 100vh;
                flex-direction: column;
                background-color: white;
                padding: 6rem 2rem 2rem;
                transition: var(--transition);
                box-shadow: var(--shadow-lg);
                z-index: 1000;
            }
            
            .nav-menu.active {
                right: 0;
            }
            
            .mobile-menu-btn {
                display: block;
            }
            
            .phone-link {
                display: none;
            }
            
            .error-actions {
                flex-direction: column;
                align-items: center;
            }
            
            .error-actions .btn {
                width: 100%;
                max-width: 300px;
            }
            
            .links-grid {
                grid-template-columns: 1fr;
            }
            
            .error-circle, .error-square {
                display: none;
            }
        }
        
        @media (max-width: 576px) {
            h1 {
                font-size: 2.5rem;
            }
            
            h2 {
                font-size: 2rem;
            }
            
            .error-digits {
                font-size: 6rem;
            }
            
            .error-number::before {
                font-size: 7rem;
            }
            
            .error-content p {
                font-size: 1.1rem;
            }
            
            .link-card {
                padding: 2rem;
            }
        }
        
        @media (max-width: 400px) {
            .error-digits {
                font-size: 5rem;
            }
            
            .error-number::before {
                font-size: 6rem;
            }
        }