option = {
    polar: {
        radiusAxis: {
            type: 'category',
            data: ['A', 'B', 'C', 'D', 'E'],
            axisPointer: {
                show: true,
                type: 'line',
                label: {
                    show: true,
                    formatter: '{value}',
                    precision: 2,
                    backgroundColor: 'rgba(0,0,0,0.7)',
                    color: '#fff',
                    padding: [5, 10],
                    borderRadius: 3,
                    shadowBlur: 5,
                    shadowColor: 'rgba(0, 0, 0, 0.5)',
                    textStyle: {  // 文字样式配置
                        fontSize: 12,
                        fontWeight: 'bold',
                        fontStyle: 'italic',
                        color: 'yellow',
                        // 其他文字样式配置...
                    },
                    // 其他样式配置...
                },
                // 其他配置...
            },
            // 其他配置...
        },
        // 其他配置...
    },
    // 其他配置...
};