A股三大股指午后走弱，深证成指跌超2%，沪指跌超1%，创业板指现跌2.58%。

Group 1 - The three major A-share indices weakened in the afternoon, with the Shenzhen Component Index dropping over 2% [1] - The Shanghai Composite Index fell by more than 1% [1] - The ChiNext Index experienced a decline of 2.58% [1]