.tab-bar {
  position: fixed;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: min(100vw, 430px);
  height: calc(110 * var(--rpx));
  background: #ffffff;
  display: flex;
  justify-content: space-around;
  align-items: center;
  padding-bottom: env(safe-area-inset-bottom);
  border-top: calc(1 * var(--rpx)) solid #eef2f6;
  box-shadow: 0 calc(-4 * var(--rpx)) calc(12 * var(--rpx)) rgba(0,0,0,0.03);
  z-index: 30;
  box-sizing: content-box;
}
.tab-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  opacity: 0.6;
  background: none;
  border: none;
  font-family: inherit;
  padding: 8px 0;
  min-height: 52px;
  cursor: pointer;
}
.tab-item.active { opacity: 1; }
.tab-icon { font-size: calc(48 * var(--rpx)); margin-bottom: calc(6 * var(--rpx)); line-height: 1; }
.tab-text { font-size: calc(26 * var(--rpx)); color: #64748b; font-weight: 500; }
.tab-item.active .tab-text { color: #f97316; font-weight: bold; }