semi-design/packages/semi-foundation/checkbox/rtl.scss

$module: #{$prefix}-checkbox;
$inner-width: $width-icon-medium;

.#{$prefix}-rtl, 
.#{$prefix}-portal-rtl {
    .#{$module} {
        direction: rtl;

        input[type="checkbox"] {
            left: auto;
            right: 0;
        }

        &-addon {
            padding-left: 0;
            padding-right: $spacing-checkbox_label-paddingLeft;
        }

        &-extra {
            padding-left: 0;
            padding-right: $spacing-checkbox_extra-paddingLeft;
        }

        &-cardType {
            .#{$module}-inner {
                margin-right: 0;
                margin-left: $spacing-checkbox_cardType_inner-marginRight;
            }
    
            .#{$module}-addon {
                margin-right: 0;
                padding-right: 0;
            }

            .#{$module}-extra {
                padding-right: 0;
            }
        }
    }

    .#{$module}Group {
        direction: rtl;

        &-horizontal {
            .#{$module} {
                margin-right: 0;
                margin-left: $spacing-checkbox_group_horizontal-marginRight;
                &:last-of-type {
                    margin-left: 0;
                }
            }
        }
    }
}