.ya_banner{position: relative;}
.ya_banner>img{width: 100%;transition: .3s;}

.ya_base{display: flex;justify-content: space-between;padding: 80px 0 50px;}
.ya_base_r{padding: 30px 60px;}
.ya_base_r>h1{font-size: 22px;color: #333;font-weight: 600;margin: 20px 0 ;}
.ya_base_r>p{color: #666;line-height: 2;}
.ya_base_w{display: flex;justify-content: space-between;align-items: center;padding: 0 30px;margin-top: 60px;}
.ya_base_i{text-align: center;}
.ya_base_i>h1{font-size: 40px;font-weight: bold;color: #333;}
.ya_base_i>span{color: #999;}

.ya_desc{background-color: #f6f6f6;padding: 100px calc(50vw - var(--lg) / 2);}
.ya_desc>p{color: #666;line-height: 2;}


@media screen and (max-width: 766px) {
    .ya_banner>img{height: 18rem;object-fit: cover;}


}