.header {
    position: absolute;
    width: 100vw;
    height: 80px;
    top: 20px;
    z-index: 100;
    transition: all .3s;
}

.is-fix {
    position: fixed;
    top: 0;
    background-color: #692323;
    box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
}

.header .header_container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.header_container .logo {
    display: flex;
    align-items: center;
    margin-left: 0.7rem;
}


.header_container .header_right {
    display: flex;
    align-items: center;
    padding-right: 0.9rem;
}

.header_right .navbar {
    height: 100%;
}

.navbar .navbar_nav {
    position: relative;
    display: flex;
    align-items: center;
    margin-bottom: 0;
    padding: 0;
    height: 100%;
}

.navbar_nav .nav_item {
    margin-right: .28rem;
    position: relative;
    color: #fff;
    font-size: 14px;
}

.nav_item .item_text {
    height: 33px;
    line-height: 33px;
    cursor: pointer;
}

.nav_item .item_text::after {
    content: "";
    position: absolute;
    bottom: 0px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: #fff;
    transform: scaleX(0);
    /* 设置过渡效果 */
    transition: .2s
}

.navbar_nav .nav_item::before{
    content: "";
    position: absolute;
    left: -100vw;
    top: 56px;
    width: 200vw;
    height: 0;
    background-color: rgba(0, 0, 0,0.5);
    transition: all .2s;
    /* backdrop-filter: blur(6px) */
}

.navbar_nav .nav_item:hover::before {
    height: 47px;
}

.navbar_nav .nav_item:hover .item_text::after {
    transform: scaleX(1)
}

.navbar_nav .nav_item:hover .item_childs {
    height: 47px;
    /* display: block; */
    display: flex;
} 


.nav_item .item_childs {
    position: absolute;
    /* padding-top: 10px; */
    padding-top: 22px;
    display: none;
    top: 34px;
    width: 850px;
    height: 0;
    /* line-height: 69px; */
    transition: .3s;
    align-items: center;
}

.item_childs .child_box {
    display: flex;
    align-items: center;
}

.child_box a{
    line-height: 20px;
    margin-right: .2rem;
}

.child_box .child_item {
    display: flex;
    align-items: center;
    cursor: pointer;
}

.child_item .icon {
    display: block;
    width: 4px;
    height: 14px;
    background-color: #fff;
    transform: rotate(15deg);
}

.child_item .child_text {
    margin-left: 6px;
    font-size: 14px;
}

.item_childs .child_box .child_item :hover {
    color: #cb0f22;
}

.item_childs .child_box .child_item :hover .icon {
    background-color: #cb0f22;
}

.header_right .search-input {
    width: 140px;
    height: 18px;
    margin-right: .3rem;
}


.chinese_change {
    color: #fff;
    font-size: 14px;
}

.chinese_change .change_btn {
    color: #fff;
    cursor: pointer;
}
.chinese_change .change_btn.active {
    color: #cb0f22;
}



.screen_container {
    position: relative;
    height: 100%;
    justify-content: space-between;
}
.screen_container .screen-logo {
    display: flex;
    align-items: center;
    margin-left: 1rem;
}

.screen-logo img{
    width: 90px;
}

.screen_container .screen-right {
    display: flex;
    align-items: center;
}

.screen-right .search-input {
    width: 120px;
    margin-right: 8px;
}

.screen-right .line-btn {
    position: relative;
    margin: 0 16px;
    width: 30px;
    height: 30px;
    border-radius: 8px;
    border: 2px solid #fff;
    /* background-color: #fff; */
}

.line-btn .line {
    position: absolute;
    left: 2px;
    width: 26px;
    height: 2px;
    background-color: #fff;
}

.line-btn .line:nth-child(1) {
    top: 6px;
}

.line-btn .line:nth-child(2) {
    top: 14px;
}

.line-btn .line:nth-child(3) {
    top: 22px;
}

.screen_container .screen-nav-list {
    position: absolute;
    right: -100vw;
    top: 40px;
    padding: 6px 10px;
    width: 100%;
    height: calc(100vh - 40px);
    background-color: #fff;
    transition: all 0.3s;
    box-sizing: border-box;
}

.screen-nav-list .nav-list-title {
    display: flex;
    justify-content: space-between;
    padding: 16px 0;
    padding-right: 18px;
    border-bottom: 1px solid #E3E3E3;
}

.nav-list-title .add {
    font-size: 20px;
    font-weight: bold;
}
.screen-nav-list .sub-list {
    /* height: 0; */
    /* display: grid; */
    grid-template-rows: 0fr;
    overflow: hidden;
    transition: all .3s;
    max-height: 0;
}

.sub-list .sub-item {
    font-size: 16px;
    color: #747474;
    
}
.sub-item > a {
    padding: 10px 6px;
    display: block;
    width: 100%;
}

@media screen and (max-width:1200px) {
	.navbar_nav .nav_item {
        font-size: 12px;
    }
    .child_item .child_text {
        font-size: 12px;
    }
}

@media screen and (min-width:1000px) {
    .header {
        height: 80px;
    }
	.header .header_container {
        display: flex;
    }
    .header .screen_container {
        display: none;
    }
}

@media screen and (max-width:1000px) {
    .header {
        height: 40px;
    }
	.header .header_container {
        display: none;
    }
    .header .screen_container {
        display: flex;
    }
}