.scroll-to-top {
  position: fixed;
  right: clamp(16px, 2.5vw, 34px);
  bottom: clamp(16px, 2.5vw, 34px);
  z-index: 1000;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-width: 92px;
  min-height: 48px;
  padding: 12px 16px;
  border: 1px solid rgba(255,255,255,.25);
  background: #090909;
  color: #fff;
  box-shadow: 0 12px 32px rgba(0,0,0,.24);
  font: 900 11px/1 Arial, sans-serif;
  letter-spacing: .08em;
  text-transform: uppercase;
  cursor: pointer;
  transition: opacity .2s ease, transform .2s ease, background .2s ease;
}

.scroll-to-top span:first-child { color: #ed1c24; font-size: 18px; line-height: .7; }
.scroll-to-top:hover, .scroll-to-top:focus-visible { background: #ed1c24; outline: 3px solid rgba(237,28,36,.25); outline-offset: 3px; }
.scroll-to-top:hover span:first-child, .scroll-to-top:focus-visible span:first-child { color: #fff; }
.scroll-to-top[hidden] { display: none !important; }

img {
  -webkit-user-drag: none;
  user-select: none;
  -webkit-user-select: none;
}

@media (max-width: 560px) {
  .scroll-to-top { min-width: 50px; width: 50px; padding: 12px; justify-content: center; }
  .scroll-to-top span:last-child { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
}

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