#tn-scroll-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  width: 50px;
  height: 50px;
  padding: 0;
  border: none;
  border-radius: 8px;
  background: #f7f7f7;
  color: #1f2a35;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.28);
  cursor: pointer;
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease, background 0.2s ease;
}

#tn-scroll-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

#tn-scroll-top:hover {
  background: #ffffff;
}

#tn-scroll-top svg {
  display: block;
  width: 32px;
  height: 32px;
  fill: currentColor;
}

@media (max-width: 768px) {
  #tn-scroll-top {
    right: 14px;
    bottom: 14px;
    width: 46px;
    height: 46px;
  }

  #tn-scroll-top svg {
    width: 29px;
    height: 29px;
  }
}