* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
        }
        
        .error-container {
            text-align: center;
            background: rgba(255, 255, 255, 0.95);
            padding: 60px 40px;
            border-radius: 24px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
            backdrop-filter: blur(10px);
            max-width: 500px;
            width: 100%;
            animation: fadeIn 0.8s ease-out;
        }
        
        .error-emoji {
            font-size: 100px;
            margin-bottom: 30px;
            animation: float 3s ease-in-out infinite;
        }
        
        .error-title {
            font-size: 32px;
            font-weight: 600;
            color: #2d3748;
            margin-bottom: 16px;
        }
        
        .error-message {
            font-size: 18px;
            color: #718096;
            line-height: 1.6;
            margin-bottom: 40px;
        }
        
        .error-detail {
            background: #f7fafc;
            padding: 16px;
            border-radius: 12px;
            border-left: 4px solid #e53e3e;
            margin-bottom: 30px;
            text-align: left;
        }
        
        .error-detail p {
            color: #4a5568;
            font-size: 14px;
            font-family: 'Monaco', 'Consolas', monospace;
        }
        
        .action-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        
        .btn {
            padding: 12px 24px;
            border: none;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-block;
        }
        
        .btn-primary {
            background: #4299e1;
            color: white;
        }
        
        .btn-primary:hover {
            background: #3182ce;
            transform: translateY(-2px);
        }
        
        .btn-secondary {
            background: #e2e8f0;
            color: #4a5568;
        }
        
        .btn-secondary:hover {
            background: #cbd5e0;
            transform: translateY(-2px);
        }
        
        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        @keyframes float {
            0%, 100% {
                transform: translateY(0px);
            }
            50% {
                transform: translateY(-10px);
            }
        }
        
        @media (max-width: 480px) {
            .error-container {
                padding: 40px 24px;
            }
            
            .error-emoji {
                font-size: 80px;
            }
            
            .error-title {
                font-size: 28px;
            }
            
            .error-message {
                font-size: 16px;
            }
            
            .action-buttons {
                flex-direction: column;
            }
            
            .btn {
                width: 100%;
            }
        }