/* 向上火箭按钮 */
.scroll-to-top {
  position: fixed !important;
  bottom: 110px !important;
  right: 20px !important;
  width: 50px !important;
  height: 50px !important;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%) !important;
  color: white !important;
  border: none !important;
  border-radius: 50% !important;
  font-size: 1.2rem !important;
  cursor: pointer !important;
  z-index: 99999 !important;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3) !important;
  opacity: 0 !important;
  visibility: hidden !important;
  transition: all 0.3s ease !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
}

.scroll-to-top.show {
  opacity: 1 !important;
  visibility: visible !important;
}

.scroll-to-top:hover {
  transform: translateY(-3px) !important;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.4) !important;
}

.scroll-to-top:active {
  transform: translateY(-1px) !important;
}