.sa_banner{}
.sa_banner_i{position: relative;}
.sa_banner_i>img{width: 100%;object-fit: cover;height: 80vh;}
.sa_banner_w{position: absolute;left: 0;right: 0;top: 46%;transform: translateY(-50%);text-align: center;}
.sa_banner_w>h1{font-size: 3rem;font-weight: 600;color: #fff;line-height: 2;}

.ban_dot{position: absolute;bottom: 100px;text-align: center;left: 50%;transform: translateX(-50%);}
.ban_dot>li{display: inline-block;width: 54px;height: 8px;font-size: 0;outline: 0;margin-right: 20px;transition: all .5s;cursor: pointer;border: 1px solid #fff;border-radius: 5px;}
.ban_dot>li:last-child{margin-right: 0;}
.ban_dot>.slick-active{background-color: #fff;;}
.ban_dot>li button{display: none;}

/* .sa_about{position: relative;padding: 100px 0;}
.sa_about>img{width: 100%;}
.sa_wow>h1{font-size: 60px;color: var(--base);font-weight: 600;margin-top: 40px;}
.sa_wow>p{font-size: 22px;padding: 20px 0 0;}
.sa_vision{position: absolute;left: 120px;top: 45%;background-color: #fff;border-radius: 20px;box-shadow: 0px 0px 15px rgba(0, 0, 0, 0.1);padding: 8rem;}
.sa_vision>h1{font-size: 4rem;border-bottom: 1px solid #aaa;margin: 0 0 40px;padding: 0 0 40px;}
.sa_vision>p{line-height: 2;font-size: 22px;}
.sa_brief{position: absolute;right: 120px;top: 74%;max-width: 46%;background-color: #fff;border-radius: 20px;box-shadow: 0px 0px 15px rgba(0, 0, 0, 0.1);padding: 6rem;}
.sa_brief>h1{font-size: 4rem;border-bottom: 1px solid #aaa;margin: 0 0 40px;padding: 0 0 40px;}
.sa_brief>p{line-height: 2;font-size: 1.2rem;text-indent: 2em;} */

.sa_about{display: flex;justify-content: space-between;align-items: center;padding: 100px 0;}
.sa_about_l{width: 48%;}
.sa_about_l>h1{border-bottom: 1px solid #ddd;padding: 0 0 3rem;margin: 0 0 3rem;font-size: 3rem;font-weight: 600;}
.sa_about_l>p{line-height: 2;font-size: 1.2rem;}
.sa_about_r{width: 48%;}
.sa_about_r>img{width: 100%;}


@media screen and (max-width: 1200px) {
    .sa_banner_i>img{height: calc(100vh - 6rem);}
    
    .ban_dot{bottom: 12rem;}
    .ban_dot>li{width: 3rem;height: .5rem;margin-right: 1rem;}
    
    /* .aa_item{padding: 8rem 0;} */

    .sa_about{flex-direction: column;gap: 2rem;padding: 10rem 0 4rem;}
    .sa_about_l{width: 100%;}
    .sa_about_r{width: 100%;}

    .sy_about>a{display: block;margin: 4rem 2rem 10rem;background-color: var(--base);line-height: 6rem;height: 6rem;text-align: center;color: #fff;border-radius: 20px;}
}<!--0.00020408630371094-->