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

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

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

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

        &-buttonRadioGroup {
            &:not(:last-child) {
                padding-left: $spacing-radio_buttonRadioGroup-paddingRight;
            }
        }
    }

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