水球外的阴影怎么去掉求助

[mcx1230]

echarts@^5.0.1
echarts-liquidfill@3.1.0

series: [{
type: 'liquidFill', radius: '190', emphasis: {itemStyle: {opacity: 0.2}}, backgroundStyle: {color: 'transparent'}, data: [0.5],
color: [{type: 'linear', x: 0, y: 1, x2: 0, y2: 0, colorStops: [{offset: 1, color: ['#6a7feb']}, {offset: 0.5, color: ['#27e5f1']}]}],
outline: {borderDistance: 0, itemStyle: {borderColor: '#8EC0F0', borderWidth: 4}}
}]

(http://gallery.echartsjs.com/editor.html?c=xr1XplzB4e) 已经无法打开

如上图所示，球的外围有明显的阴影

[mcx1230]

不劳专家出手了，自己解决了