.y1{width: 100%; margin:50px auto 120px}
.y2{width: 80%;margin: 0 auto;}

.banner_pc{width: 100%;height: auto;display: block; }
.bigimg{width: 100%;overflow: hidden; aspect-ratio: 77 / 28; }
.bigimg .img{width: 100%; object-fit: cover;}
.group{width: 100%;margin: 40px 0 0;padding: 0; overflow: hidden;position: relative;}
.group .swiper-wrapper{width: 100%}
.group .swiper-slide{width: 100%;overflow: hidden;background:#f5f6f9}
.group .picimg{width: 100%;overflow: hidden;aspect-ratio: 77 / 28; }
.group .picimg .pic{width: 100%; object-fit: cover;}
.group  p{font-size: 18px;line-height: 60px;text-align: center;color: #333;margin: 0;}
.group .swiper-slide-active p{ color:#ea4523}
.group .swiper-button-prev, .group .swiper-button-next{width: 40px;height: 60px;background: rgba(0,0,0,0.6);box-sizing: border-box;background-size: 20px;background-repeat: no-repeat;background-position: 10px 12px;opacity: 0.6;margin: 0;}
.group .swiper-button-prev{left: 0;top:50%;transform:translateY(-50%);}
.group .swiper-button-next{right: 0;top:50%; transform:translateY(-50%);}

.banner_yd{width: 100%;display: none;overflow: hidden;aspect-ratio: 77 / 28; }
.banner_yd .swiper-wrapper, .banner_yd .swiper-slide, .banner_yd .picimg{width: 100%;aspect-ratio: 77 / 28}
.banner_yd .picimg .pic{width: 100%;object-fit: cover;}




/******** 手机版 ********/
@media (max-width:767px){
	
	.banner_pc{display: none;}
	.banner_yd{display: block;}
}

/******** 750px ********/
@media (min-width:768px) and (max-width:991px){
.y1{ margin:0px auto 70px}
.y2{width: 94%;}
.group .swiper-button-prev, .group .swiper-button-next{width: 30px;height: 40px; background-size:14px; background-position: 8px 9px;}
.group  p{font-size:14px; line-height: 36px;}

}


/******** 970px ********/
@media (min-width:992px) and (max-width:1199px){
.y1{ margin:10px auto 90px}
.y2{width: 90%;}


.group .swiper-button-prev, .group .swiper-button-next{width: 40px;height: 50px; background-size:16px; background-position: 10px 12px;}
.group  p{font-size:15px; line-height: 40px;}



}


/******** 1160px ********/
@media (min-width:1200px) and (max-width:1439px){
.y2{width: 90%;}
.group  p{font-size:17px; line-height: 55px;}

}