.home-scroll-top {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 90;
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  border: 1px solid rgba(89, 215, 192, 0.55);
  border-radius: 50%;
  background: linear-gradient(145deg, #0c8b7f, #075f59);
  color: #fff;
  box-shadow: 0 12px 30px rgba(5, 52, 48, 0.28);
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px);
  pointer-events: none;
  cursor: pointer;
  transition: opacity 180ms ease, transform 180ms ease, visibility 180ms ease, box-shadow 180ms ease;
}
.home-scroll-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0); pointer-events: auto; }

.home-scroll-top:hover { transform: translateY(-3px); box-shadow: 0 16px 34px rgba(5, 52, 48, 0.35); }
.home-scroll-top:focus-visible { outline: 3px solid #ffc94d; outline-offset: 3px; }
.home-scroll-top span { font-size: 1.55rem; font-weight: 900; line-height: 1; }
@media (max-width: 620px) {
  .home-scroll-top { right: 14px; bottom: 14px; width: 44px; height: 44px; }

}
@media (prefers-reduced-motion: reduce) { .home-scroll-top { transition: none; } }