<button class="radikalwp-btn-gold">خرید اشتراک ویژه<//button>

.radikalwp-btn-gold {
  position: relative; padding: 14px 38px; border: 0; border-radius: 14px; cursor: pointer;
  background: linear-gradient(120deg, #f59e0b, #f97316, #f59e0b); background-size: 200% auto;
  color: #fff; font-size: 14px; font-weight: 800; font-family: inherit;
  box-shadow: 0 8px 22px rgba(245,158,11,.4); transition: background-position .5s, transform .2s;
}
.radikalwp-btn-gold:hover { background-position: right center; transform: translateY(-2px); }