<span class="radikalwp-gtip"><button type="button">راهنما<//button><span class="radikalwp-gtip-bubble">برای فعال‌سازی کامل امکانات، اشتراک حرفه‌ای لازم است.<//span><//span>

.radikalwp-gtip { position: relative; display: inline-block; }
.radikalwp-gtip > button {
  padding: 10px 26px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 700;
  color: #4f46e5;
  background: #eef2ff;
  border: 1.5px solid #c7d2fe;
  border-radius: 12px;
  cursor: pointer;
}
.radikalwp-gtip-bubble {
  position: absolute;
  bottom: calc(100% + 12px);
  right: 50%;
  width: 210px;
  padding: 10px 14px;
  font-size: 12px;
  line-height: 1.9;
  color: #312e81;
  text-align: right;
  border: 2px solid transparent;
  border-radius: 12px;
  background: linear-gradient(#fff, #fff) padding-box, linear-gradient(120deg, #8b5cf6, #ec4899) border-box;
  opacity: 0;
  visibility: hidden;
  transform: translateX(50%) translateY(6px);
  transition: opacity .25s ease, transform .25s ease, visibility .25s;
  pointer-events: none;
  z-index: 5;
}
.radikalwp-gtip:hover .radikalwp-gtip-bubble {
  opacity: 1;
  visibility: visible;
  transform: translateX(50%) translateY(0);
}
.radikalwp-gtip-bubble::after {
  content: '';
  position: absolute;
  bottom: -7px;
  right: 50%;
  width: 12px;
  height: 12px;
  background: linear-gradient(120deg, #8b5cf6, #ec4899);
  transform: translateX(50%) rotate(45deg);
  clip-path: polygon(100% 0, 0 100%, 100% 100%);
}