.snd_banner>img{width: 100%;height: 450px;object-fit: cover;}

.spd_nav{background-color: var(--base);color: #fff;width: 1200px;margin: -66px auto 0;height: 66px;border-radius: 10px 10px 0 0;padding: 0 40px;position: relative;z-index: 1;}
.spd_nav_c{display: flex;align-items: center;height: 100%;}
.spd_nav_c>img{margin-right: 16px;width: 18px;height: 18px;}
.spd_nav_c>a{color: #747474;font-size: 16px;margin-right: 10px;color: #e7e7e7;}
.spd_nav_c>span{margin-right: 10px;color: #747474;font-size: 20px;color: #e7e7e7;}

.snd_main{padding: 40px 0;}
.snd_title{text-align: center;margin-top: 30px;}
.snd_title>h1{font-size:30px;color: #333;}
.snd_title>span{display: inline-block;width: 20px;height: 6px;background-color: var(--base);}
.snd_main_c{width: 1200px;margin: 0 auto;background-color: #fff;padding: 0 0 50px;}
.snd_main_c>h2{line-height: 30px;color: #787878;text-align: center;font-size: 14px;margin: 18px 0 40px;}

@media screen and (max-width: 766px) {
    .snd_banner>img{height: 130px;}

    .spd_nav{margin: 0 auto;border-radius: 0;white-space: nowrap;overflow-x: auto;}
    .spd_nav::-webkit-scrollbar{ display:none; }     
    .spd_nav_c{width: 200vw;}
    .spd_nav_c>a{font-size: 1.4rem;}
    .spd_nav_c>span{font-size: 1.6rem;}

    .snd_title>h1{font-size: 2rem;}
}