/* qmentropy.com 自定义样式 */

/* ===== 阅读进度条 ===== */
#reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(90deg, #4fc3f7, #26c6da);
  z-index: 9999;
  transition: width 0.1s ease-out;
}

/* ===== 返回顶部按钮 ===== */
#back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: none;
  background: #1a237e;
  color: #e3f2fd;
  font-size: 20px;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all 0.3s ease;
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
  z-index: 9998;
}
#back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
#back-to-top:hover {
  background: #0d47a1;
}

/* ===== 暗色主题下代码块微调 ===== */
html[data-skin="dark"] pre,
html[data-skin="dark"] code {
  background: #1a1a2e;
}