html {
    font-size: calc(100vw / 750);
}

@media (min-width: 750px) {
    html {
        font-size: 1px;
    }
}

body {
    font-size: 16rem;
    max-width: 750px;
    width: 100%;
    margin: auto;
    font-family: '微软雅黑';
    position: relative;
}

body.no-scroll {
    overflow: hidden;
    height: 100vh;
}

a {
    text-decoration: none;
    color: inherit;
}

.header_logo {
    height: 130rem;
    padding: 0 20rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header_logo .logo {
    height: 60rem;
}

.header_logo .menu_btu {
    width: 60rem;
    height: 45rem;
    position: relative;
}

.header_logo .menu_btu .icon {
    position: absolute;
    left: 0;
    width: 60rem;
    height: 6rem;
    background-color: #a60000;
    border-radius: 6rem;
    transition: all 0.3s ease;
}

.header_logo .menu_btu .icon:nth-child(1) {
    top: 0;
}

.header_logo .menu_btu .icon:nth-child(2) {
    top: 50%;
    transform: translateY(-50%);
}

.header_logo .menu_btu .icon:nth-child(3) {
    top: 100%;
    transform: translateY(-100%);
}

.header_logo .menu_btu.active .icon:nth-child(2) {
    display: none;
}

.header_logo .menu_btu.active .icon:nth-child(1) {
    width: 72rem;
    top: 50%;
    transform: translateY(-50%) translateX(-6rem) rotate(-36.87deg);
}

.header_logo .menu_btu.active .icon:nth-child(3) {
    width: 72rem;
    top: 50%;
    transform: translateY(-50%) translateX(-6rem) rotate(36.87deg);
}

.header_menu {
    width: 100%;
    max-width: 750px;
    height: calc(100vh - 130rem);
    position: fixed;
    top: 130rem;
    background-color: rgba(255, 255, 255, .9);
    z-index: 3;
    display: none;
}

.header_menu.active {
    display: block;
}

.header_menu .title {
    font-size: 30rem;
    font-weight: bold;
    text-align: center;
    line-height: 100%;
    padding-top: 50rem;
    color: #a60000;
}

.header_menu .list {
    padding: 30rem 40rem;
}

.header_menu .list .item {
    display: block;
    color: #565456;
    font-size: 28rem;
    line-height: 80rem;
    border-bottom: 1px solid #cccccc;
}

.header_menu .list .item.active {
    color: #a60000;
    font-size: 30rem;
}


.banner .img {
    width: 100%;
}

.footer_bj {
    background-color: #a60000;
    font-size: 28rem;
    color: #ffffff;
    padding: 30rem 30rem 120rem 30rem;
}

.footer {
    display: flex;
}

.footer_nav {
    padding-right: 20rem;
    border-right: 1px solid #ffffff;
    margin-right: 20rem;
}

.footer_nav .link {
    margin-bottom: 20rem;
    font-size: 28rem;
    display: block;
}

.footer_nav .link:last-child {
    margin-bottom: 0;
}

.footer_con {
    flex: 1;
    display: flex;
    justify-content: space-between;
    flex-direction: column;
}

.footer_con .item {
    font-size: 26rem;
    display: flex;
    align-items: center;
}

.footer_con .item img {
    width: 29rem;
    height: 29rem;
    object-fit: contain;
    margin-right: 4rem;
}

.footer_bj .icp {
    display: block;
    font-size: 28rem;
    line-height: 36rem;
    padding-top: 25rem;
}

.footer_menu {
    position: fixed;
    bottom: 0;
    z-index: 4;
    background-color: #ffffff;
    width: 100%;
    max-width: 750px;
    height: 90rem;
    font-size: 26rem;
    display: flex;
}

.footer_menu .home {
    color: #565456;
    padding: 0 40rem;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}
.footer_menu .home img{
    width: 40rem;
    height: 40rem;
}
.footer_menu .menu {
    flex: 1;
    display: flex;
}
.footer_menu .menu .item {
    width: 50%;
    height: 100%;
    color: #ffffff;
    display: flex;
    justify-content: center;
    align-items: center;
}
.footer_menu .menu .item:nth-child(1) {
    background-color: #ff9a00;
}
.footer_menu .menu .item:nth-child(2){
    background-color: #a61f26;
}