*{box-sizing:border-box;margin:0;padding:0}body{background:var(--theme-bg);color:var(--theme-text);height:100vh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,PingFang SC,Microsoft YaHei,sans-serif;transition:background .3s,color .3s;overflow:hidden}#app{height:100vh}