* {
    margin: 0;
    padding: 0;
}
ul li {
    list-style-type: none;
}
body{
    background-color: #F5F5F5;
}
a {
    text-decoration: none;
}

.nav_ul::-webkit-scrollbar {
    display: none;
}

.nav-height {
    position: relative;
}

.nav_ul {
    display: flex;
    white-space: nowrap;
    overflow-y: hidden;
    width: 100%;
}

.t1 {
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 1;
}

.t2 {
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
}

.t3 {
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3;
}

.t4 {
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 4;
}

html {
    overflow-y: scroll;
}

:root {
    overflow-y: auto;
    overflow-x: hidden;
}

:root body {
    position: absolute;
}

body {
    width: 100vw;
    overflow: hidden;
}
.top{
    background-color: #E87F18;
}
.head{
    width: 100%;
    padding: .3rem;
    box-sizing: border-box;
    display: flex;
    align-items: end;
    background-color: #E87F18;
}
.logo{
    width: 1.61rem;
    height: .52rem;
}
.logo a{
    display: flex;
    height: .52rem;
}
.logo img{
    height: .52rem;
}
.inp_ss {
    width: 4rem;
    height: .6rem;
    display: flex;
    background-color: #fff;
    border-radius: .1rem;
    margin-left: 10%;
}
.inp_ss .search{
    width: 3.4rem;
    height: .6rem;
    outline: none;
    border: 0;  
    text-indent: 1em;
    background: #FFFFFF;
    border-radius: .1rem 0 0 .1rem;
}
::-webkit-input-placeholder {
    color: #ccc;
}
.inp_ss .button{
    border: 0;
    background: #fff;
    border-radius: 0 .1rem .1rem 0;
    display: flex;
    justify-content: center;
    align-items: center;
    width: .6rem;
    height: .6rem;
}
.inp_ss .button img{
    width: .4rem;
}
.head .click {
    margin-left: 4%;
}
.head .click a{
    display: flex;
    width: .35rem;
    height: .6rem;
    align-items: center;
}
.head .click img{
    width: .35rem;
    height: .28rem;
}
.nav{
    height: .88rem;
    line-height: .88rem;
    background-color: #fff;
    box-shadow: 0rem .02rem .1rem 0rem rgba(51,51,51,0.3);
}

.nav_ul{
    display: flex;
    align-items: center;
}
.nav_ul li{
    height: .88rem;
    display: flex;
}
.nav_ul li a{
    display: inline-block;
    height: .88rem;
    font-size: .28rem;
    font-family: PingFang SC;
    font-weight: 400;
    color: #333333;
    margin: 0 .15rem;
} 
.nav_ul li a::after{
    content: "丨";
    color: #CCCCCC;
    margin-left: .30rem;
}
.nav_ul li:last-child a::after{
    content: none;
}
.nav_ul li:first-child a{
    margin-left: .30rem;
}
.nav_ul li.active a{
    position: relative;
}
.nav_ul li.active a::before{
    content: "";
    display: inline-block;
    width: .55rem;
    height: .05rem;
    background: #E87F18;
    position: absolute;
    bottom: .11rem;
}