* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Microsoft YaHei", sans-serif;
}

body {
  margin-right: 80px;
  /* 为侧边栏预留空间，防止内容被遮挡 */
}

.sidebar {
  position: fixed;
  right: 0;
  top: 0;
  width: 80px;
  height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px 0;
  z-index: 1000;
  margin-right: 10px;
  margin-top: 5%;
}

.sidebar-btn {
  width: 60px;
  height: 60px;
  border-radius: 8px;
  margin-bottom: 15px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  color: white;
  font-size: 12px;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s ease;
}

.sidebar-btn:hover {
  transform: translateX(-5px);
}

.orange-btn {
  background-color: #FF6B00;
}

.purple-btn {
  background-color: #6A5ACD;
}

.sidebar-icon {
  font-size: 20px;
  margin-bottom: 5px;
}

.scroll-top {
  width: 60px;
  height: 20px;
  cursor: pointer;
}