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.safe-area{height:auto;min-height:calc(420px * var(--preview-scale))}.safe-area:before{content:"有效排版区域";color:#0d776e7a;font-size:8px;position:absolute;top:4px;right:5px}.safe-area.align-left{justify-content:flex-start}.safe-area.align-center{justify-content:center}.safe-area.align-right{justify-content:flex-end}.paper-ruler{color:#9b6d45;z-index:2;font-size:8px;position:absolute}.paper-ruler.top{width:var(--safe-margin);text-align:center;border-left:1px solid #c7905d;border-right:1px solid #c7905d;height:12px;top:8px;left:50%;transform:translate(-50%)}.paper-ruler.left{width:14px;height:var(--safe-margin);border-top:1px solid #c7905d;border-bottom:1px solid #c7905d;top:50%;left:6px;transform:translateY(-50%)}.paper-ruler.left span{position:absolute;top:50%;left:-4px;transform:translate(-100%,-50%)rotate(-90deg)}.paper-dimension{color:#8e999f;white-space:nowrap;font-size:8px;position:absolute;bottom:8px;left:50%;transform:translate(-50%)}.page-stamp{right:calc(31px * 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