/* Hot Cupons — voltar ao topo */
.back-to-top{
  position:fixed;
  right:24px;
  bottom:24px;
  z-index:120;
  width:48px;
  height:48px;
  display:grid;
  place-items:center;
  border:0;
  border-radius:50%;
  background:var(--orange,#ff5a1f);
  color:#fff;
  box-shadow:0 10px 28px rgba(35,24,17,.22);
  cursor:pointer;
  opacity:0;
  visibility:hidden;
  pointer-events:none;
  transform:translateY(10px) scale(.94);
  transition:opacity .18s ease,transform .18s ease,visibility .18s ease,background-color .18s ease;
}
.back-to-top.is-visible{
  opacity:1;
  visibility:visible;
  pointer-events:auto;
  transform:translateY(0) scale(1);
}
.back-to-top:hover{
  background:var(--orange-dark,#e54810);
  transform:translateY(-2px) scale(1);
}
.back-to-top:focus-visible{
  outline:3px solid rgba(255,90,31,.25);
  outline-offset:3px;
}
.back-to-top svg{
  width:22px;
  height:22px;
  display:block;
  fill:none;
  stroke:currentColor;
  stroke-width:2.4;
  stroke-linecap:round;
  stroke-linejoin:round;
}
@media(max-width:620px){
  .back-to-top{
    right:16px;
    bottom:18px;
    width:44px;
    height:44px;
  }
  .back-to-top svg{width:20px;height:20px}
}
@media(prefers-reduced-motion:reduce){
  .back-to-top{transition:none}
}