<span class="radikalwp-mirror-text" data-text="نسخه طلایی">نسخه طلایی<//span>

.radikalwp-mirror-text {
  position: relative;
  display: inline-block;
  font-size: 40px;
  font-weight: 900;
  line-height: 1.4;
  color: #0f172a;
}
.radikalwp-mirror-text::after {
  content: attr(data-text);
  position: absolute;
  top: 100%;
  right: 0;
  width: 100%;
  color: #64748b;
  opacity: .25;
  transform: scaleY(-1);
  -webkit-mask-image: linear-gradient(180deg, transparent 30%, #000 100%);
  mask-image: linear-gradient(180deg, transparent 30%, #000 100%);
  pointer-events: none;
  transition: opacity .3s ease;
}
.radikalwp-mirror-text:hover::after { opacity: .45; }