:root{--font-family-title:DFKai-GBOtf-W5,Kaiti SC,SimSun,serif;--font-family-main:Helvetica Neue,Arial,Hiragino Sans GB,PingFang SC,Microsoft YaHei,Noto Sans CJK,sans-serif;--font-family-title-zh-change-main-en:DFKai-GBOtf-W5,Kaiti SC,SimSun,serif;--font-weight-bold:700;--font-weight-zh-bold:500;--font-weight-normal:400}