.lbt{margin-top: 0.75rem; width: 100%;  height: 5.67rem;    position: relative;}

.lbt .mySwiper {height: 100%;}
.lbt .swiper-slide img{width: 100%;}
.lbt .swiper-slide::before{width: 100%; content: ""; height: 2.28rem; display: block; background-image: url(../kjcyy/2.png); position: absolute; left: 0; bottom: 0; background-size: 100% 100%;}
.swiper_title{position: absolute; left: 50%; top: 50%;transform: translate(-50%,-50%); width: 100%; text-align: center;}
.swiper_title p:nth-child(1){ font-size:.65rem; font-family: JDLangZhengTi; color: #fff;}
.swiper_title p:nth-child(2){font-size: .22rem; color: #fff; margin-top: .16rem; font-weight: 400; font-family: JINGDONGLangZhengTi2Semilight; line-height: 1.5;}
.lbt .swiper-pagination .swiper-pagination-bullet{width: .6rem; height: 0.06rem; background-color: rgba(255,255,255,0.44); border-radius: .5rem; opacity: 1;}
.lbt .swiper-pagination .swiper-pagination-bullet-active{background-color: #E1251B;}


.banner_nav{display: flex;font-size: .16rem; color: #C2C0C0; margin-top: .42rem; font-family: JINGDONGLangZhengTi2Semilight; position: absolute;
    left: 50%;
    top: 0;
    transform: translate(-50%, 0);
    z-index: 99;}
.banner_nav a{font-size: .2rem; color: #C2C0C0;display: block;}
.banner_nav a:last-child{color: #fff; font-weight: bold;}
.banner_nav a:hover{color: #fff; font-weight: bold;} 

@media screen and (max-width: 768px) { 
       /* 轮播图 */
    .lbt{margin-top: 0; padding-top: 1rem; height: auto;  aspect-ratio: 16 / 9; }
    .banner_nav{width: 100%; display: none;}
     .mySwiper{width: 100%; height: 100%;}
     .swiper_title{width: 95%;}
    .swiper_title p:nth-child(1){font-size: .35rem;}
    .swiper_title p:nth-child(2){font-size: .18rem;}
    .lbt .swiper-slide img{height: 100%;}
    .advantage{ padding-top: 0; padding-bottom: .8rem; box-sizing: border-box; background: none; }
    .advantage_content_left_content ul li p{padding-left: 0;}
    .advantage_content_left_content ul li span{padding-left: 0;}
    .Productadvantages_contet ul li:nth-child(1)>p{padding-left: 0;}
}