/* ====== 404页面独享CSS ====== */
        
        /* 主内容区域 */
        .main-content {
            margin-top: 80px;
            min-height: calc(100vh - 80px - 400px); /* 减去导航栏和页脚高度 */
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        /* 404区域 - 水平居中 */
        .error-section {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 80px 0;
        }
        
        .error-container {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            text-align: center;
            max-width: 800px;
            width: 100%;
            margin: 0 auto;
        }
        
        /* 404数字动画 */
        .error-number {
            position: relative;
            margin-bottom: 40px;
        }
        
        .number-wrapper {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 20px;
            margin-bottom: 30px;
        }
        
        .number-digit {
            font-size: 180px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
            position: relative;
            text-shadow: 0 10px 30px rgba(26, 54, 93, 0.2);
        }
        
        .digit-4 {
            animation: float 3s ease-in-out infinite;
        }
        
        .digit-0 {
            animation: float 3s ease-in-out infinite 0.5s;
        }
        
        .digit-4-2 {
            animation: float 3s ease-in-out infinite 1s;
        }
        
        @keyframes float {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-20px); }
        }
        
        .error-glow {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(0, 168, 232, 0.2) 0%, rgba(0, 168, 232, 0.1) 30%, transparent 70%);
            z-index: -1;
            border-radius: 50%;
        }
        
        /* 破碎效果 */
        .broken-effect {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: -1;
            opacity: 0.3;
        }
        
        .broken-piece {
            position: absolute;
            width: 40px;
            height: 40px;
            background-color: var(--accent);
            border-radius: 8px;
            opacity: 0.5;
        }
        
        .piece-1 {
            top: 10%;
            left: 15%;
            animation: floatPiece 8s ease-in-out infinite;
        }
        
        .piece-2 {
            top: 30%;
            right: 20%;
            animation: floatPiece 10s ease-in-out infinite 1s;
        }
        
        .piece-3 {
            bottom: 20%;
            left: 25%;
            animation: floatPiece 9s ease-in-out infinite 2s;
        }
        
        .piece-4 {
            bottom: 10%;
            right: 15%;
            animation: floatPiece 7s ease-in-out infinite 3s;
        }
        
        @keyframes floatPiece {
            0%, 100% { transform: translate(0, 0) rotate(0deg); }
            25% { transform: translate(10px, -15px) rotate(90deg); }
            50% { transform: translate(-5px, 10px) rotate(180deg); }
            75% { transform: translate(15px, 5px) rotate(270deg); }
        }
        
        /* 错误内容 */
        .error-content {
            margin-bottom: 50px;
        }
        
        .error-content h1 {
            font-size: 42px;
            color: var(--primary);
            margin-bottom: 20px;
            line-height: 1.2;
        }
        
        .error-content p {
            font-size: 18px;
            color: var(--gray);
            max-width: 600px;
            margin: 0 auto 30px;
            line-height: 1.7;
        }
        
        /* 按钮区域 */
        .error-actions {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
            justify-content: center;
            margin-bottom: 50px;
        }
        
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 16px 32px;
            font-weight: 600;
            font-size: 16px;
            border-radius: var(--radius);
            transition: var(--transition);
            cursor: pointer;
            border: none;
            outline: none;
            gap: 10px;
        }
        
        .btn-primary {
            background-color: var(--accent);
            color: var(--white);
            box-shadow: 0 4px 12px rgba(0, 168, 232, 0.3);
        }
        
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(0, 168, 232, 0.4);
            background-color: #0097d1;
        }
        
        .btn-secondary {
            background-color: transparent;
            color: var(--primary);
            border: 2px solid var(--light-gray);
        }
        
        .btn-secondary:hover {
            border-color: var(--accent);
            color: var(--accent);
            transform: translateY(-3px);
        }
        
        /* 搜索区域 */
        .error-search {
            width: 100%;
            max-width: 500px;
            margin: 0 auto 40px;
        }
        
        .search-box {
            position: relative;
            width: 100%;
        }
        
        .search-input {
            width: 100%;
            padding: 18px 24px 18px 50px;
            border: 2px solid var(--light-gray);
            border-radius: 50px;
            font-size: 16px;
            font-family: 'Inter', sans-serif;
            transition: var(--transition);
            background-color: var(--white);
        }
        
        .search-input:focus {
            outline: none;
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(0, 168, 232, 0.1);
        }
        
        .search-icon {
            position: absolute;
            left: 20px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--gray);
            font-size: 18px;
        }
        
        .search-button {
            position: absolute;
            right: 6px;
            top: 50%;
            transform: translateY(-50%);
            background-color: var(--accent);
            color: var(--white);
            border: none;
            border-radius: 50px;
            padding: 12px 24px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        
        .search-button:hover {
            background-color: #0097d1;
        }
        
        /* 推荐链接 */
        .recommended-links {
            width: 100%;
            max-width: 800px;
            margin: 0 auto;
        }
        
        .recommended-links h3 {
            font-size: 20px;
            color: var(--primary);
            margin-bottom: 25px;
        }
        
        .links-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        
        .link-card {
            background-color: var(--white);
            border-radius: var(--radius);
            padding: 25px 20px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            border: 1px solid var(--light-gray);
            text-align: center;
        }
        
        .link-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
            border-color: var(--accent);
        }
        
        .link-icon {
            width: 50px;
            height: 50px;
            background-color: rgba(0, 168, 232, 0.1);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 15px;
            color: var(--accent);
            font-size: 20px;
            transition: var(--transition);
        }
        
        .link-card:hover .link-icon {
            background-color: var(--accent);
            color: var(--white);
        }
        
        .link-card h4 {
            font-size: 16px;
            color: var(--primary);
            margin-bottom: 10px;
        }
        
        .link-card p {
            color: var(--gray);
            font-size: 14px;
            line-height: 1.6;
        }
        
        /* 404地球动画 */
        .error-globe {
            width: 300px;
            height: 300px;
            margin: 40px auto 0;
            position: relative;
        }
        
        .globe-container {
            width: 100%;
            height: 100%;
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .globe-sphere {
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            position: relative;
            overflow: hidden;
            box-shadow: inset 0 0 50px rgba(0, 0, 0, 0.3);
            animation: rotateGlobe 20s linear infinite;
        }
        
        @keyframes rotateGlobe {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }
        
        .globe-sphere::before {
            content: '';
            position: absolute;
            width: 100%;
            height: 100%;
            border-radius: 50%;
            background: radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.2), transparent 70%);
        }
        
        .globe-crack {
            position: absolute;
            width: 100%;
            height: 100%;
            border-radius: 50%;
            overflow: hidden;
        }
        
        .crack-line {
            position: absolute;
            background-color: rgba(255, 255, 255, 0.7);
            transform-origin: center;
        }
        
        .crack-1 {
            width: 4px;
            height: 120%;
            top: -10%;
            left: 50%;
            transform: translateX(-50%);
        }
        
        .crack-2 {
            width: 4px;
            height: 120%;
            top: -10%;
            left: 50%;
            transform: translateX(-50%) rotate(60deg);
        }
        
        .crack-3 {
            width: 4px;
            height: 120%;
            top: -10%;
            left: 50%;
            transform: translateX(-50%) rotate(120deg);
        }
        
        /* 响应式设计 */
        @media (max-width: 1024px) {
            .number-digit {
                font-size: 150px;
            }
            
            .links-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        
        @media (max-width: 768px) {
            .error-section {
                padding: 60px 0;
            }
            
            .number-digit {
                font-size: 120px;
            }
            
            .error-content h1 {
                font-size: 32px;
            }
            
            .error-content p {
                font-size: 16px;
            }
            
            .error-actions {
                flex-direction: column;
                align-items: center;
            }
            
            .btn {
                width: 100%;
                max-width: 300px;
            }
            
            .links-grid {
                grid-template-columns: 1fr;
            }
            
            .error-globe {
                width: 250px;
                height: 250px;
            }
            
            .globe-sphere {
                width: 150px;
                height: 150px;
            }
        }
        
        @media (max-width: 480px) {
            .number-digit {
                font-size: 90px;
            }
            
            .number-wrapper {
                gap: 10px;
            }
            
            .error-glow {
                width: 300px;
                height: 300px;
            }
        }
        
        /* ====== 404页面独享CSS结束 ====== */