*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body,html{font-size:14px;color:#303133}#app,body,html{width:100%;overflow-x:hidden}#app{font-family:Helvetica Neue,Helvetica,PingFang SC,Microsoft YaHei,Arial,sans-serif;min-height:100vh;-webkit-font-smoothing:antialiased}.el-card{border-radius:8px}.el-button{border-radius:4px}.main-content-bg{background:#f5f7fa}