:root{color-scheme:light}*{box-sizing:border-box}body,html{margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;background:#f3f5f7;color:#18201d}a{color:inherit;text-decoration:none}