@property --100vw{syntax:"<length>";inherits:false;initial-value:0}@property --vw-num{syntax:"<number>";inherits:false;initial-value:0}@layer lab{.vwBox:after{--100vw:100vw;--vw-num:calc(tan(atan2(var(--100vw), 1px)));counter-reset:vwnum calc(var(--vw-num));content:"100vw = " counter(vwnum)}.emWrap{border:2px dashed var(--accent-line);border-radius:14px;max-width:100%;padding:0;container-type:inline-size}.emBox{--w-em:calc(tan(atan2(100cqi, 1em)))}.emBox:after{counter-reset:wem calc(var(--w-em));content:"宽 ≈ " counter(wem) " em"}.msBox:after{--ms-num:calc(tan(atan2(var(--t,12) * 1s + 1ms, 1ms)));counter-reset:msnum calc(var(--ms-num));content:counter(msnum) " ms"}.tscroll{overflow-x:auto}}@property --w-em{syntax:"<number>";inherits:true;initial-value:0}@property --ms-num{syntax:"<number>";inherits:false;initial-value:0}