/* 联系客服入口：颜色与本站 .back-top 保持一致 */
.back-kefu{width:.72rem;height:.72rem;z-index:100;background-color:#4DA5DD;position:fixed;bottom:1.32rem;right:.5rem;text-align:center;line-height:.72rem;cursor:pointer}
.back-kefu svg{width:.36rem;height:.36rem;display:inline-block;vertical-align:middle}
/* 客服二维码弹层 */
.kefu-layer{display:none;position:fixed;left:0;top:0;width:100%;height:100%;z-index:9999;background:rgba(0,0,0,.6)}
.kefu-layer.active{display:block}
.kefu-box{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:3.4rem;padding:.3rem;background:#fff;text-align:center}
.kefu-box img{width:2.8rem;display:block;margin:0 auto}
.kefu-box p{margin-top:.16rem;font-size:.16rem;color:#666}
.kefu-close{position:absolute;right:.06rem;top:.02rem;font-size:.36rem;line-height:1;color:#999;cursor:pointer;font-family:Arial}

/* AI 推荐入口：叠在在线客服按钮正上方（仅首页） */
.ai-entry{position:fixed;right:.5rem;bottom:2.2rem;width:.88rem;z-index:100;pointer-events:none}
.ai-entry img{display:block;width:100%;height:auto}