/* 底部导航 - 极致紧凑 无留白 */
        /* ============= 底部导航 ============= */
        .bottom-tab {
            position: fixed;
            bottom: 0;
            left: 0;
            width: 100%;
            background: #FFFFFF;
            display: flex;
            justify-content: space-around;
            align-items: center;
            height: 58px;
            box-shadow: 0 -1px 2px rgba(0, 0, 0, 0.03);
            z-index: 999;
            border-top: 1px solid #f5f5f5;
            z-index: 1000;
            /* 比 top-fixed 高 */
        }

        .bottom-tab .tab-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            font-size: 10px;
            color: #999;
            flex: 1;
            padding: 0;
        }

        .bottom-tab .tab-item.active {
            color: #FF2442;
        }