header {
    height: 120px;
    padding-top: 30px;
    position: absolute;
    top: 0; left: 0; right: 0;
    z-index: 1024;
    -webkit-transition: .3s;
    -moz-transition: .3s;
    -o-transition: .3s;
    transition: .3s;
}

.p-nav { display: flex; width: 100%; }
.m-nav { display: none; }

header .logo {
    width: 315px;
    height: 100%;
    background-color: #FFFFFF;
    background-image: url(../images/public/logo.png);
    background-repeat: no-repeat;
    background-position: center;
    background-size: 68.571428% auto;
}

.justify-content-evenly {
    -ms-flex-pack: space-evenly !important;
    justify-content: space-evenly !important;
}

.rounded-left-0 {
    border-top-left-radius: 0rem !important;
    border-bottom-left-radius: 0rem !important;
}

.nav-wrapper { padding-right: 50px; }

.nav-wrapper .nav-item { position: relative; }

.nav-wrapper .nav-item + .nav-item { margin-left: 36px; }

.nav-wrapper a,
.nav-wrapper span {
    color: var(--font-white); font-family: system-ui, -apple-system, BlinkMacSystemFont, segoe ui, Roboto, Helvetica, Arial, sans-serif;
}

.nav-wrapper .nav-link:hover,
.nav-wrapper .nav-link:hover span {
    color: var(--font-brown);
    transition: color .15s;
}

.nav-wrapper a.active,
.nav-wrapper .nav-item.active a {
    color: var(--font-brown);
}

header.active-yellow .nav-wrapper .nav-item.active a,
header.active-yellow .nav-wrapper .nav-link.active,
header.active-yellow .nav-wrapper .nav-link:hover,
header.active-yellow .nav-wrapper .nav-link:hover span {
    color: var(--font-yellow);
}

.nav-wrapper .top-language,
.nav-wrapper .top-language i {
    font-size: 16px;
    font-weight: 500;
}

.top-language .nav-link:nth-child(2) { position: relative; }

.top-language .nav-link:nth-child(2)::after {
    content: "";
    position: absolute;
    top: 50%; right: 0;
    width: 1px; height: 50%;
    background-color: var(--font-white);
    -webkit-transform: translateY(-50%);
    -moz-transform: translateY(-50%);
    -ms-transform: translateY(-50%);
    -o-transform: translateY(-50%);
    transform: translateY(-50%);
}
.nav-wrapper .nav-list { font-size: 18px; font-weight: 500; }

/* 下拉菜单 样式一 */
.p-nav-dropdown {
    display: none;
    position: absolute; z-index: -1;
    top: 120px; left: 0; right: 0;
}

.p-nav-dropdown.animation {
    -webkit-animation-name: dropdownAnimation;
    -moz-animation-name: dropdownAnimation;
    -ms-animation-name: dropdownAnimation;
    -o-animation-name: dropdownAnimation;
    animation-name: dropdownAnimation;
    -webkit-animation-duration: 0.3s;
    -moz-animation-duration: 0.3s;
    -ms-animation-duration: 0.3s;
    -o-animation-duration: 0.3s;
    animation-duration: 0.3s;
    -webkit-animation-fill-mode: both;
    -moz-animation-fill-mode: both;
    -ms-animation-fill-mode: both;
    -o-animation-fill-mode: both;
    animation-fill-mode: both;
}

.p-nav-dropdown-mask {
    position: absolute;
    bottom: 0; left: 50%;
    width: 200%; height: 300%;
    background-color: #1b1b21;
    border-radius: 50%; overflow: hidden;
    transform: translate3d(-50%, 6.8%, 0);
}

.p-nav-dropdown-mask::after {
    content: "";
    position: absolute;
    opacity: 0.05;
    width: 100%; height: 100%;
    background-image: url(../images/service/service-description-decoration.png);
    background-size: 18% auto;
    background-repeat: no-repeat;
    background-position: center bottom;
    -webkit-transform: translateY(17%);
    -moz-transform: translateY(17%);
    -ms-transform: translateY(17%);
    -o-transform: translateY(17%);
    transform: translateY(17%);
}

.p-nav-dropdown-container {
    padding-top: 30px;
    position: relative;
    z-index: 1;
}

.p-nav-dropdown-list {
    padding: 30px 100px;
    border-top: 1px solid rgba(243, 237, 224, .1);
    display: -ms-flexbox;
    display: flex;
    -ms-flex-pack: justify;
    justify-content: space-between;
}

.p-nav-dropdown-item {
    padding: 0 20px 0 20px;
}

.p-nav-dropdown-item + .p-nav-dropdown-item {
    border-left: 1px solid rgba(243, 237, 224, .1);
}

.p-nav-dropdown-item:first-child { padding-left: 0; }
.p-nav-dropdown-item:last-child { padding-right: 0; }

.p-nav-dropdown-item a:first-child {
    font-size: 18px; margin-bottom: 30px;
}

.p-nav-dropdown-item a + a { margin-top: 15px; }

.p-nav-dropdown-item a {
    display: block; font-size: 16px;
    color: var(--font-white);
}
.p-nav-dropdown-item a:hover { color: var(--font-brown); }
header.active-yellow .p-nav-dropdown-item a:hover { color: var(--font-yellow); }

@keyframes dropdownAnimation {
    0% {
        opacity: 0;
        transform: translate3d(0, -30px, 0);
    }
    100% {
        opacity: 1;
        transform: translate3d(0, 0px, 0);
    }
}

/* 样式二 */
.nav-item-dropdown-list {
    display: none;
    width: max-content;
    position: absolute;
    top: calc(100% + 10px); left: 0;
    padding: 20px 30px;
	background-color: rgba(0, 0, 0, .6);
    /*background-color: #1b1b21;*/
	/*background-color: rgba(20, 12, 7, 0.85);*/
    /*box-shadow: 0px 0px 10px rgba(20, 12, 7, 0.9), 0px 0px 20px rgba(20, 12, 7, 0.8);*/
}
.nav-wrapper .nav-item:last-child .nav-item-dropdown-list {
    left: unset; right: 0;
}
.nav-item-dropdown-list::before {
    content: "";
    position: absolute;
    top: -20px;
    left: 0;
    right: 0;
    height: 20px;
    background-color: transparent;
}
.nav-item-dropdown-list a {
    display: block;
    font-size: 16px;
    line-height: 40px;
}
.nav-item-dropdown-list a:hover { color: var(--font-brown); }
header.active-yellow .nav-item-dropdown-list a:hover { color: var(--font-yellow); }

/* 移动端导航 */
.m-nav { position: relative; }
.m-nav .logo { width: 200px; background-size: 75% auto; }
.m-nav, .m-nav-top { width: 100%; height: 100%; }
.m-nav-top { padding: 0 15px 0 0; font-family: system-ui, -apple-system, BlinkMacSystemFont, segoe ui, Roboto, Helvetica, Arial, sans-serif;}
.m-nav a, .m-toggle-nav { flex-shrink: 0; }
.m-nav a, .m-toggle-nav svg { color: var(--font-white); fill: var(--font-white); }
.m-toggle-nav svg { width: 25px; height: 25px; cursor: pointer; }
.m-toggle-nav { padding: .5rem 1rem; }
.m-nav .top-language .nav-link:nth-child(2)::after { background-color: var(--font-white); }
.m-nav-top .logo { height: 100%; }
.m-dropdown {
    position: absolute;
    top: 70px; left: 0;
    display: none;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, segoe ui, Roboto, Helvetica, Arial, sans-serif;
}
header.m-show .m-nav-list .nav-item { width: 100%; }
header.m-show, header.m-show .m-nav-list {
    background-color: #1b1b21;
}
header.m-show .m-dropdown { display: flex; width: 100%; }
header.m-show .m-nav-list {
    display: -ms-flexbox;
    display: flex;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
    padding: 0 50px 50px;
    overflow: auto;
}
.m-nav-dropdown {
    display: none;
    -ms-flex-direction: column;
    flex-direction: column;
    padding-left: 30px;
}
.m-dropdown .m-nav-dropdown li {
    border-bottom: 1px solid rgba(243, 237, 224, .5);
}
.m-nav .nav-item.has-child-dropdown > .nav-link-wrap {
    position: relative;
}
.m-nav .nav-item.has-child-dropdown:first-child > .nav-link-wrap::after {
    content: none;
}
.m-nav .nav-item.has-child-dropdown > .nav-link-wrap::after {
    content: "";
    position: absolute;
    top: 50%; right: 15px;
    margin-top: -5px;
    width: 10px; height: 10px;
    border-width: 0px 2px 2px 0px;
    border-style: solid;
    border-color: rgba(243, 237, 224, .5);
    -webkit-transform: rotate(45deg);
    -moz-transform: rotate(45deg);
    -ms-transform: rotate(45deg);
    -o-transform: rotate(45deg);
    transform: rotate(45deg);
    -webkit-transition: transform .3s;
    -moz-transition: transform .3s;
    -o-transition: transform .3s;
    transition: transform .3s;
}
.m-nav .nav-item.show-child-dropdown > .nav-link-wrap::after {
    -webkit-transform: rotate(225deg);
    -moz-transform: rotate(225deg);
    -ms-transform: rotate(225deg);
    -o-transform: rotate(225deg);
    transform: rotate(225deg);
}
.m-dropdown .nav-item a {
    height: 60px;
    line-height: 60px;
    padding: 15px;
    display: inline-flex;
    align-items: center;
    justify-content: space-between;
}
header.m-show .m-nav-list .nav-link-wrap {
    border-bottom: 1px solid rgba(243, 237, 224, .5);
}
.m-nav-icon { display: block; }
.m-close-icon { display: none; }
header.m-show .m-nav-icon { display: none; }
header.m-show .m-close-icon { display: block; }

/* 响应式 */
@media (max-width: 1599px) {
    .nav-wrapper .nav-item + .nav-item { margin-left: 20px; }

    .p-nav-dropdown-item a:first-child,
    .nav-wrapper a, .nav-wrapper span { font-size: 17px; }
    .p-nav-dropdown-item a,
    .nav-item-dropdown-list a { font-size: 15px; }
    .p-nav-dropdown-list { padding: 30px 80px; }

    .p-nav-dropdown-mask::after {
        -webkit-transform: translateY(8%);
        -moz-transform: translateY(8%);
        -ms-transform: translateY(8%);
        -o-transform: translateY(8%);
        transform: translateY(8%);
    }
}

@media (max-width: 1399px) {
    .nav-wrapper .nav-item + .nav-item { margin-left: 0px; }

    .p-nav-dropdown-list { padding: 30px 30px; }

    .p-nav-dropdown-mask::after {
        -webkit-transform: translateY(5%);
        -moz-transform: translateY(5%);
        -ms-transform: translateY(5%);
        -o-transform: translateY(5%);
        transform: translateY(5%);
    }

    header {
        height: 100px;
        padding-top: 20px;
    }

    header .logo {
        width: 275px;
    }

    .p-nav-dropdown-item a:first-child, 
    .nav-wrapper a, .nav-wrapper span {
        font-size: 16px;
    }
}

@media (max-width: 1299px) {
    .nav-wrapper .nav-item + .nav-item { margin-left: 0; }
}

@media (max-width: 1199px) {
    .p-nav { display: none; }
    .m-nav { display: flex; }

    header {
        height: 80px; padding-top: 10px;
    }

    header.m-show .m-nav-list {
        max-height: calc(100vh - 80px);
    }
}

@media (max-width: 767px) {
	header { height: 70px; }

    .m-nav .logo {
        width: 170px;
    }
	
    .m-nav a {
        font-size: 16px;
    }

    .m-nav .nav-link, .m-toggle-nav { padding: .5rem .6rem; }
    header.m-show .m-nav-list {
        padding: 0 20px 20px;
    }
	
	.elder, .oa {
        display: none;
    }
	
    .m-dropdown { top: 60px; height: calc(100vh - 70px); }
}

@media (max-width: 567px) {
    header { height: 60px; }

    .m-nav .logo { width: 30%; }

    .m-nav a {
        font-size: 14px;
    }

    .m-toggle-nav svg { width: 20px; height: 20px; }

    .m-dropdown { top: 45px; height: calc(100vh - 55px); }

    header.m-show .m-nav-list {
        max-height: calc(100vh - 60px);
    }
}

@media (max-width: 480px) {
    header { height: 55px; }

    .m-nav .logo { width: 26%; }
}