.back-to-top {
  position: fixed;
  right: 28px;
  bottom: 28px;
  z-index: 15;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  width: 68px;
  height: 68px;
  min-height: 68px;
  padding: 8px;
  border: 1px solid #fff5e9;
  border-radius: 50%;
  background: #ff6600;
  color: #242421;
  box-shadow: 0 4px 18px #24242126;
  font-family: inherit;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: .03em;
  cursor: pointer;
  transition: transform .2s, box-shadow .2s;
}

.back-to-top svg {
  width: 24px;
  height: 24px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.back-to-top:hover {
  transform: translateY(-3px);
  box-shadow: 0 7px 20px #24242133;
}

.back-to-top:focus-visible {
  outline: 3px solid #163d36;
  outline-offset: 4px;
  border-radius: 50%;
}

.back-to-top[hidden] { display: none; }

@media (max-width: 1023px) {
  .back-to-top { display: none; }
}

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