body{
    font-family: Roboto, "Noto Sans", "Noto Sans JP", "Noto Sans KR", "Noto Naskh Arabic", "Noto Sans Thai", "Noto Sans Hebrew", "Noto Sans Bengali", sans-serif;
    font-size: 16px;
    line-height:24px;
}
a{
    color:rgb(32, 33, 36);
}
a:hover{
    text-decoration:none;
}
ul{
    padding:0;
    margin:0;
}
ul li{
    list-style: none;
}
h2{
    font-size:22px;
    line-height:32px;
}
.gc_body{
    background: rgb(232, 234, 237);
}
.gc-wrapper{
    display: flex;
}
.devsite-article{
    background-color:rgb(255, 255, 255);
    /* border:2px solid rgb(32, 33, 36); */
    border-radius:2px;
    box-shadow:rgba(60, 64, 67, 0.3) 0px 1px 2px 0px, 
    rgba(60, 64, 67, 0.15) 0px 1px 3px 1px;
    padding: 40px;
    width: 936px;
    /* margin-top:25px; */
    /* margin:25px 25px 0 25%; */
}
.breadcrumb-item+.breadcrumb-item::before{
    content: ">";
    margin-top: -1px;
    color: #000;
}
.breadcrumb-item+.breadcrumb-item{
    padding-left: 10px;
}
.breadcrumb-item+.breadcrumb-item::before{
    padding-right: 10px;
}
.gc_breadcrumb{
    background-color: transparent;
    margin-bottom:0;
    padding:0;
}
.gc_breadcrumb li a{
    font-size:13px;
    color:rgb(95, 99, 104);

}
.gc_breadcrumb li a:hover{
    color:rgb(26, 115, 232);
}
.gc_title{
    font-size:32px;
    line-height:40px;
}
.devsite-article-body p{
    font-size:16px;
    line-height:24px;
    color:rgb(32, 33, 36);
    margin:16px 0;
	text-align: justify;
}
.devsite-nav-list{
    padding-left:12px;
    border-left:4px solid rgb(3, 155, 229);
}

.devsite-nav-list li{
    margin-bottom:8px;
}
.devsite-nav-list li:not(:first-child).active a{
    color:rgb(24, 90, 188);
}
.devsite-nav-list >li a{
    font-size: 12px;
    line-height:16px;
    display: block;
    color:rgba(0, 0, 0, 0.8);
}
.devsite-nav-list >li:first-child a{
    cursor: default;
}
.devsite-nav-list li:not(:first-child) a:hover{
    color:rgb(26, 115, 232);
}
.leve2_ul{
    padding-left: 12px;
    margin-top: 7px;
}
.lt_side_menu{
    bottom: 0;
    display: block;
    position: fixed;
    top: 0;
    z-index: 1;
    width: 270px;
    background:rgb(255, 255, 255);
    box-shadow: rgb(60 64 67 / 30%) 0px 1px 2px 0px, rgb(60 64 67 / 15%) 0px 1px 3px 1px;

}

.lt_sider_cont{
    position: fixed;
    top: 25px;
    right: 0;
}
.gc-wrapper .col-md-3{
    padding-left:0;
}
.lt_sider_cont{
    padding:0 25px;
}
.book_list{
    padding:20px 0 10px;
}
.book_list li a{
    font-size: 12px;
    line-height: 16px;
    display: block;
    color: rgba(0, 0, 0, 0.8);
    padding:5px 25px;
    width: 95%;
    border-top-right-radius: 25px;
    border-bottom-right-radius: 25px;
}
.book_list li:hover a{
    background: rgb(241, 243, 244);
}
.book_list li.active a{
    color: rgb(24, 90, 188);
    background:rgb(232, 240, 254);
}
.gc_breadcrumb_cont{
    display: flex;
    justify-content: space-between;
    margin-bottom:16px;
}
.rt_like_cont{
    display: flex;
}
.like_up,.like_down{
    cursor: pointer;
    width: 30px;
    height: 30px;
    border-radius: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.like_up:hover,.like_down:hover{
    background: rgb(232, 240, 254);
}
.like_up svg,.like_down svg{
    width: 18px;
}
.like_up.active,.like_down.active{
    fill:rgb(24, 90, 188);
}
.nav_level1 >li{
    padding-top:7px;
    padding-bottom:7px;
    border-top:1px solid rgb(218, 220, 224);
    /* border-bottom:1px solid rgb(218, 220, 224); */
}
.nav_level1 li a{
    font-size: 12px;
    line-height: 16px;
    display: block;
    color: rgba(0, 0, 0, 0.8);
}
.nav_level2{
    display: none;
}
.nav_level1 >li >a{
    padding:7px 15px 7px 25px;
}
.nav_level1 .level1 >a{
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.nav_level1 .level1 i.icon-xiala{
    font-weight: bold;
    color: rgb(95, 99, 104);
    font-size: 18px;
}
.nav_level1 .level1.active i{
    transform:rotate(180deg);
}
.nav_level1 >li.active .nav_level2{
    display: block;
}
.nav_level2 >li a{
    padding: 5px 15px 5px 35px;
    width: 95%;
        border-top-right-radius: 25px;
    border-bottom-right-radius: 25px;
}
.nav_level2 >li>a:hover{
    background: rgb(241, 243, 244);
}
.nav_level2 li.level2 >a{
    padding-left: 20px;
}
.level2 i{
    font-size: 14px;
}
.nav_level3,.nav_level4{
    display: none;
}
.nav_level2 .level2.active .nav_level3,
.nav_level3 .level3.active .nav_level4{
    display: block;
}

.nav_level2 .level2.active >a .icon-xiala3,
.nav_level3 .level3.active >a .icon-xiala3{
    transform: rotate(90deg);
    display: inline-block;
}
.nav_level3 .level3 a{
    padding-left: 35px;
}
.nav_level4 .level4 a{
    padding-left: 65px;
}
.nav_level3 .level3 a:hover{
    background: rgb(241, 243, 244);
}
.nav_level2 li.gaoliang a{
    color: rgb(24, 90, 188);
}
.nav_level4 li{
    padding-left: 20px;
}
.mobile_lt_sider{
    display: none;
}
.fold_menu{
    position: fixed;
    top:50%;
    transform: translateY(-50%);
    left:0;
    width: 25px;
    z-index:222;
    display: none;
    cursor: pointer;
}
.fold_menu i{
    font-size: 22px;
    color: #fff;
    background: rgb(24, 90, 188);
}



.gc-wrapper{
    padding-top:100px;
}
.lt_side_menu{
    top:70px;
}
.lt_sider_cont{
    top:100px;
}
.footer{
    position: relative;
    z-index:111;
}
.devsite-article{
    margin-bottom:50px;
}
@media (max-width:1250px) {
    .lt_sider_cont{
        display: none;
    }
    .mobile_lt_sider{
        display: block;
    }
    .devsite-article{
        -ms-flex: 0 0 73%;
    flex: 0 0 73%;
    max-width: 73%;
    }
    .mobile_lt_sider{
        margin-bottom:20px;
    }
}
@media (max-width:1200px) {
    .gc-wrapper .col-md-3{
        flex: 0 0 290px;
        max-width: 290px;
    }
    .devsite-article{
        flex: 0 0 calc(100% - 290px);
        max-width: calc(100% - 307px);
    }
}
@media (max-width:840px) {
    .devsite-article{
        flex: 0 0 100%;
        max-width: 100%;
    }
    .devsite-book-nav{
        transform: translate(-100%);
        padding-right: 0;
        transition: all .3s;
        z-index: 2;
    }
    .devsite-article{
        margin-top:0;
    }
    .fold_menu{
        display: block;
    }
    .devsite-book-nav.status{
        transform: translate(0px);
    }
    .gc-wrapper .col-md-3{
        flex: auto;
        max-width: none;
    }
    .lt_side_menu{
        -webkit-transition: left .2s linear;
        -o-transition: left .2s linear;
        transition: left .2s linear;
        left: -270px;
    }
    .devsite-book-nav.status .lt_side_menu{
        left: 0;
    }
    .gc-wrapper {
        padding-top: 63px;
        
    }
    .devsite-article{
        margin-bottom:0;
    }
    .lt_side_menu{
        z-index: 155;
    }
    .devsite-book-nav.status{
        transform: translate(0px);
    }
    .lt_side_menu {
        top: 0;
    }
}
@media (min-width:1800px) {
    .gc-wrapper .col-md-3,.gc-wrapper .col-md-2{
        max-width: 25%;
        flex: 0 0 25%;
    }
    .gc-wrapper .col-md-7{
        max-width: 50%;
        flex: 0 0 50%;
    }
}
@media (max-width:768px) {
    .gc_title {
        font-size: 24px;
        line-height: 33px;
    }
    h2 {
        font-size: 20px;
        line-height: 28px;
    }
}
@media (max-width:576px) {
    .gc_breadcrumb_cont{
        display: block;
    }
    .rt_like_cont{
        margin-top:10px;
    }
    .devsite-article{
        padding:25px;
    }
}