* {
	margin: 0;
	padding: 0; list-style: none;
}

body {
	padding: 1rem;
	padding-top: 0;
}
.kuangjia{ display: flex;}
.left_menu{width: 150px;position: sticky;left: 0;top: 0;height: 100vh;margin-right: 20px;}
.left_menu ul>li>a{
    display: flex;
    height: 70px;
    line-height: 70px;
    display: flex;
    justify-content: space-between;
    font-size: 18px;
    cursor: pointer;
    border-bottom: 1px solid #efefef;
    text-decoration: none;
    color: #bdbdbd;
    justify-content: center;
    border-radius: 5px;
    transition: all .3s;
}
.left_menu ul>li:last-child>a{
    border: none;
}
.left_menu ul>li>a b{
    font-weight: normal;
    color: #515151;
}
.left_menu ul>li>a:hover, .left_menu ul>li.active>a{
    background: #667eea;
}
.left_menu ul>li>a:hover b, .left_menu ul>li.active>a b{
   color:#fff
}

.left_menu ul>li>a span{}


.kuangjia_right{ flex: 1;}

.arc{}
.arc_1{
    display: flex;
    background: #f1f2f5;
    border-radius: 3px;
    padding: 1rem;
    flex-wrap: wrap;
    justify-content: center;
}
.arc_1_1{
    margin-right: 1rem;
    max-width: calc(100vw - 4rem);
    width: 350px;
}
.arc_1_1 img{
    width: 100%;
}
.arc_1_2{
    margin-right: auto;
    flex: 1;
    min-width: 300px;
}
.arc_1_2>h3{
    margin: 1rem 0;
}
.arc_1_2>h4{
    color: #676767;
    margin-bottom: .5rem;
}
.arc_1_2_arc{
    font-size: 14px;
}
.arc_1_2_arc p{
    margin: .5rem 0;
    line-height: 1.8;
    font-size: 15px;
}
.arc_2{
    padding: 1rem;
}
.arc_2>h4{
    text-align: center;
    margin-bottom: 1rem;
}
.arc_2_1{
    font-size: 14px;
}
.arc_2_1 img{
    max-width: calc(100vw - 4rem);
    height: auto !important;
    display: block;
    margin: auto;
}
.arc_2_1>p{
    margin: .5rem 0;
    line-height: 1.8;
    font-size: 14px;
}

.top{position: sticky;background: #fff;width: 100%;top: 0;display: flex;align-items: center;justify-content: space-between;padding: 10px;z-index: 111;box-sizing: border-box;}
.top_0{
    margin-left: auto;
}
.top_1{
    display: flex;
    align-items: center;
    background: #e3e3e3;
    border-radius: 10px;
    padding: 5px 10px;
    flex: 1;
}
.top_1>input{
    border: none;
    background: none;
    height: 35px;
    line-height: 35px;
    flex: 1;
    font-size: 16px;
}
.top_1>svg{}
.top_2{
    margin-left: 15px;
}
.top_2>svg{}
.top_2_1{
    display: none;
    position: fixed;
    top: 68px;
    right: 10px;
    background: #fff;
    box-shadow: 0 4px 32px 0 rgba(0,0,0,0.08),0 1px 4px 0 rgba(0,0,0,0.04);
    border-radius: 10px;
    padding: 13px;
    width: 40%;
    max-width: 250px;
    z-index: 111;
}
.top_2_1>li>a{
    display: flex;
    height: 40px;
    line-height: 40px;
    display: flex;
    justify-content: space-between;
    font-size: 18px;
    cursor: pointer;
    border-bottom: 1px solid #efefef;
    text-decoration: none;
    color: #bdbdbd;
    border-radius: 5px;
    padding: .5rem;
}
.top_2_1>li:last-child>a{ border: none;}
.top_2_1>li b{font-weight: normal;color: #515151;}
.top_2_1>li span{}

.top_2_1>li.active a{
    background: #667eea;
}
.top_2_1>li.active a span{
    color: #fff;
}
.top_2_1>li.active a b{
    color: #fff;
}
.top_3{ display: none;  margin-left: 15px;}

@media (min-width: 1000px) {
	.top_1{display: flex;}
	.top_0{display: none;}
	.top_2{ display: none;}
	.top_3{ display: none !important;}
}

@media (max-width: 1000px) {
	.top_1{display: none;}
	.top_0{display: block;}
	.top_2{ display: block;}
	.left_menu{ display: none;}

}
@media (max-width: 660px) {
	
}

@media (max-width: 547px) {
	
}

@media (max-width: 480px) {
	
}