mini-starter/mini-demo/custom-tab-bar/index.wxss

.tab-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 50px;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  display: flex;
  border-top: 1px solid rgba(229, 229, 229, 0.6);
  box-shadow: 0 -2px 20px rgba(0, 0, 0, 0.08);
  z-index: 9999;
}

.tab-item {
  flex: 1;
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 6px 0 4px 0;
  transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.tab-item:active {
  transform: scale(0.95);
}

.tab-icon {
  width: 26px;
  height: 26px;
  margin-bottom: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.icon-text {
  font-size: 20px;
  color: #8E8E93;
  font-weight: 300;
  letter-spacing: 0.5px;
  transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.tab-item-active .icon-text {
  color: #4A90C2;
  font-weight: 400;
  transform: scale(1.1);
}

.tab-text {
  font-size: 10px;
  color: #8E8E93;
  font-weight: 500;
  letter-spacing: 0.2px;
  transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.tab-item-active .tab-text {
  color: #4A90C2;
  font-weight: 600;
}