.cd-top {
  display: inline-block;
  height: 44px;
  width: 44px;
  border-radius: 24px;
  position: fixed;
  bottom: 150px;
  right: 20px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.05);
  /* image replacement properties */
  overflow: visible;
  text-indent: 100%;
  white-space: nowrap;
  background: var(--primary) url(/public/assets/img/cd-top-arrow.svg) no-repeat center 50%;
  visibility: hidden;
  opacity: 0;
  z-index: 1001;
  -webkit-transition: opacity .3s 0s, visibility 0s .3s;
  -moz-transition: opacity .3s 0s, visibility 0s .3s;
  transition: opacity .3s 0s, visibility 0s .3s;
  /* 二㊨次㊤开㊋发㊟程序㊇搭㊔建㊤刷㊦单㊢资㊡金㊧盘㊣彩㊨票㊯盘㊉游㊎戏㊊理㊧财㊦TG：@aiziziyuan，TG：@laipiaozi www.laipiaozi.com（请自行忽略中间符号！)㊮ab㊭cdefg㊥hijklmn㊡opqr㊚stuvwxy㊃z */
  /* 保持fixed定位，进度指示器也使用fixed */
}

/* 进度指示器背景圆环 - 内圈轨道 */
.cd-top::before {
  content: '';
  position: fixed;
  bottom: 152px;
  right: 22px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.3);
  background: transparent;
  /* 二㊂次㊯开㊓发㊟程㊑序㊛搭㊡建㊧刷㊘单㊄资㊍金㊎盘㊆彩㊋票㊨盘㊠游㊍戏㊌理㊏财㊫TG：@aiziziyuan，TG：@laipiaozi www.laipiaozi.com（请自行忽略中间符号！)㊊abcdef㊁ghijklmnop㊣qrstuvwx㊖yz */
  z-index: 998;
  pointer-events: none;
}

/* 进度指示器 - 内圈动态进度 */
.cd-top::after {
  content: '';
  position: fixed;
  bottom: 150px;
  right: 20px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: conic-gradient(
    from -90deg,
    var(--hov-primary) 0deg,
    var(--hov-primary) var(--progress, 0deg),
    transparent var(--progress, 0deg)
  );
  mask: radial-gradient(circle, transparent 18px, black 20px, black 22px, transparent 24px);
  -webkit-mask: radial-gradient(circle, transparent 18px, black 20px, black 22px, transparent 24px);
  z-index: 999;
  pointer-events: none;
  transition: background 0.1s ease;
}



.cd-top.cd-is-visible, .cd-top.cd-fade-out, .no-touch .cd-top:hover {
  -webkit-transition: opacity .3s 0s, visibility 0s 0s;
  -moz-transition: opacity .3s 0s, visibility 0s 0s;
  transition: opacity .3s 0s, visibility 0s 0s;
}
.cd-top.cd-is-visible {
  /* the button becomes visible */
  visibility: visible;
  opacity: 1;
  z-index: 999;
}
.cd-top.cd-fade-out {
  /* if the user keeps scrolling down, the button is out of focus and becomes less visible */
  opacity: .5;
}
.no-touch .cd-top:hover {
  background-color: var(--primary);
  opacity: 1;
}
@media only screen and (min-width: 768px) {
  .cd-top {
    right: 20px;
    bottom: 20px;
  }
  
  /* 调整进度指示器位置 */
  .cd-top::before {
    bottom: 22px;
    right: 22px;
    width: 40px;
    height: 40px;
  }
  
  .cd-top::after {
    bottom: 20px;
    right: 20px;
    width: 44px;
    height: 44px;
  }
}
@media only screen and (min-width: 1024px) {
  .cd-top {
    height: 44px;
    width: 44px;
    border-radius: 24px;
    right: 20px;
    bottom: 80px;
  }
  
  .cd-top::before {
    bottom: 82px;
    right: 22px;
  }
  
  .cd-top::after {
    bottom: 80px;
    right: 20px;
  }
}

@media screen and (min-width:768px) and (max-width: 1023px){
  .cd-top {
    height: 44px;
    width: 44px;
    border-radius: 24px;
    right: 20px;
    bottom: 80px;
  }
  
  .cd-top::before {
    bottom: 82px;
    right: 22px;
  }
  
  .cd-top::after {
    bottom: 80px;
    right: 20px;
  }
}

@media screen and (min-width:1025px) and (max-width: 1366px){
  .cd-top {
    height: 44px;
    width: 44px;
    border-radius: 24px;
    right: 20px;
    bottom: 80px;
  }
  
  .cd-top::before {
    bottom: 82px;
    right: 22px;
  }
  
  .cd-top::after {
    bottom: 80px;
    right: 20px;
  }
}