#app{font-family:system-ui,-apple-system,BlinkMacSystemFont,Helvetica Neue,Helvetica,Segoe UI,Arial,Roboto,PingFang SC,miui,Hiragino Sans GB,Microsoft Yahei,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;color:#2c3e50}body{margin:0;padding:0;min-height:100vh;background-color:#f7f8fa}.van-tabbar{z-index:100}