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

$module: #{$prefix}-anchor;

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

        &-slide {
            right: $spacing-anchor_slide-left;
            left: auto;
        }

        &-link {
            padding-left: auto;
        }
    }
}