/* 默认样式 */
:root {
    --primary-color: #3560cd;
    --header-text-color: #fff;
    --header-border-color: rgba(255, 255, 255, 0.58);
    --header-dropdown-bgcolor: #fff;
    --section-bgcolor: #f2f3f8;
    --research-item-bgcolor: #fff;
    --resource-text-color: #fff;
    --primary-bdcolor: #e5e5e5;
    --title-text-color: #000;
    --main-text-color: #333;
    --desc-text-color: #666;
    --inner-header-bdcolor: #ffca14;
    --inner-bgcolor: #f4f4f4;
    --inner-left-bgcolor: #f1f5ff;
    --inner-submenu-bgcolor: #f1f5ff;
    --footer-bgcolor: #3bdaed;
    --footer-text-color: #fff;
}
::-webkit-scrollbar {
    width: 8px;
    height: 1px;
    transition: all 0.3s linear;
}
::-webkit-scrollbar-thumb {
    box-shadow: inset 0 0 5px rgba (0, 0, 0, 0.2);
    background: var(--primary-color);
    cursor: pointer;
}
::-webkit-scrollbar-track {
    box-shadow: inset 0 0 5px rgba (0, 0, 0, 0.2);
    background: #ededed;
}
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-touch-callout: none;
    -webkit-tap-highlight-color: transparent;
}
html,
body {
    scroll-behavior: smooth;
}
html {
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
}
body {
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-family: 'PingFang SC', 'Microsoft YaHei', '微软雅黑', system-ui, -apple-system, sans-serif;
}
ul,
ol {
    list-style: none;
}
img {
    display: block;
    max-width: 100%;
}
a,
a:link,
a:visited,
a:hover,
a:active {
    color: inherit;
    outline: none;
    text-decoration: none;
}
a:hover,
a.active {
    color: var(--link-hover-color);
}
@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}
/* header style */
.index_header {
    width: 100%;
    height: 700px;
    position: relative;
    overflow: hidden;
}
.search_header {
    min-height: auto;
    height: 450px;
    display: flex;
    justify-content: center;
    align-items: end;
    transition: all 0.3s ease;
    background: url('../images/banner.jpg') center no-repeat;
    background-size: cover;
}
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 99;
    width: 100%;
    height: 115px;
    background: linear-gradient(to bottom, rgba(53, 96, 205, 1) 0%, rgba(53, 96, 205, 0.5) 65%, rgba(53, 96, 205, 0.1) 100%);
    color: var(--header-text-color);
    transition: height 0.3s ease;
}
.navbar .container {
    width: 100%;
    height: 100%;
    max-width: 1760px;
    border-bottom: 1px solid var(--header-border-color);
    display: flex;
    justify-content: space-between;
}
.logo {
    max-height: 90px;
    margin-top: 12px;
    margin-left: 10px;
    white-space: nowrap;
    font-size: 18px;
    transition: margin 0.3s ease;
}
.logo img {
    height: 100%;
    max-width: none;
    display: inline-block;
    vertical-align: middle;
}
.menu {
    display: block;
    position: relative;
    height: 100%;
}
.infos {
    position: absolute;
    right: 10px;
    top: 20px;
    font-size: 14px;
    line-height: 16px;
    display: flex;
}
.info {
    display: block;
    padding-right: 20px;
    margin-right: 20px;
    cursor: pointer;
    border-right: 1px solid var(--header-border-color);
}
.info:last-child {
    border-right: none;
    margin-right: 0;
    padding-right: 0;
}
.info.search {
    width: 36px;
    height: 16px;
    background: url('../images/icon_search.png') center no-repeat;
}
.info.wx-qr {
    position: relative;
}
.qr-box {
    display: none;
    position: absolute;
    right: initial;
    left: 50%;
    transform: translateX(-50%);
    top: calc(100% + 15px);
    width: 168px;
    height: 168px;
    z-index: 100;
}
.qr-box::before {
    content: '';
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 0;
    border-bottom: 12px solid #fff;
    border-left: 12px solid transparent;
    border-right: 12px solid transparent;
    z-index: 100;
}
.wx-qr:hover .qr-box {
    display: block;
}
.nav-menu {
    margin-top: 74px;
    margin-right: 10px;
    height: 42px;
    display: flex;
    position: relative;
    transition: all 0.3s ease;
}
.nav-item {
    display: block;
    width: 108px;
    text-align: center;
    font-size: 16px;
    line-height: 20px;
    font-weight: bold;
    cursor: pointer;
    position: relative;
}
.nav-item.active {
    border-bottom: 4px solid var(--header-text-color);
}
.nav-item a {
    display: block;
}
.dropdown-menu {
    position: absolute;
    opacity: 0;
    visibility: hidden;
    width: 108px;
    top: calc(100% - 4px);
    border-top: 4px solid var(--primary-color);
    left: 50%;
    padding: 5px 8px;
    background: var(--header-dropdown-bgcolor);
    transform: translate(-50%, 10px);
    transition: all 0.3s ease;
}
.dropdown-menu li {
    color: var(--main-text-color);
    text-align: center;
    height: 36px;
    line-height: 36px;
    font-size: 14px;
    font-weight: normal;
    border-bottom: 1px dashed var(--primary-bdcolor);
}
.dropdown-menu li:last-child {
    border-bottom: none;
}
.dropdown-menu li:hover {
    color: var(--primary-color);
    font-weight: bold;
}
.nav-item:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translate(-50%, 0);
}
.navbar-mini {
    height: 101px;
    background: rgba(53, 96, 205, 0.6);
    backdrop-filter: blur(5px) saturate(120%);
}
.navbar-mini .logo {
    margin-top: 5px;
}
.navbar-mini .infos {
    display: none;
}
.navbar-mini .nav-menu {
    margin-top: 60px;
}
.m-menu-btn {
    display: none;
}
.m-nav {
    display: none;
}
/* 内页头部 */
.inner_header {
    width: 100%;
    height: 500px;
    position: relative;
}
.inner_banner {
    width: 100%;
    height: 100%;
}
.inner_banner img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.inner_infos {
    width: 100%;
    position: absolute;
    left: 0;
    bottom: 0;
}
.inner_infos .container {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
}
.inner_title {
    width: 248px;
    height: 151px;
    border-top: 6px solid var(--inner-header-bdcolor);
    background: var(--primary-color) url('../images/inner_title_bg.png') left bottom no-repeat;
    display: flex;
    align-items: center;
    justify-content: center;
}
.inner_title h3 {
    height: 100px;
    font-size: 30px;
    overflow: hidden;
    line-height: 70px;
    color: var(--header-text-color);
}
.inner_breadcrumbs {
    margin-bottom: 10px;
    display: flex;
}
.inner_breadcrumbs a {
    display: block;
    height: 20px;
    line-height: 20px;
    padding-right: 15px;
    margin-right: 15px;
    color: var(--header-text-color);
    position: relative;
    font-size: 14px;
    text-shadow: 0 0 3px rgba(0, 0, 0, 0.5);
}
.inner_breadcrumbs a:hover {
    color: rgba(255, 255, 255, 0.7);
}
.inner_breadcrumbs a:after {
    content: '';
    display: block;
    height: 13px;
    width: 1px;
    background: var(--header-text-color);
    rotate: 30deg;
    position: absolute;
    top: 3px;
    right: 0;
}
.inner_breadcrumbs a:first-child {
    padding-left: 20px;
    background: url('../images/icon_home.png') 0 0 no-repeat;
}
.inner_breadcrumbs a:last-child {
    margin-right: 0;
    padding-right: 0;
}
.inner_breadcrumbs a:last-child:after {
    display: none;
}
.container {
    max-width: 1400px;
    width: calc(100% - 80px);
    margin: 0 auto;
    transition: all 0.3s ease;
}
footer {
    width: 100%;
    background: linear-gradient(to left, var(--primary-color), var(--primary-color) 50%, var(--footer-bgcolor));
    overflow: hidden;
    position: relative;
    color: var(--footer-text-color);
}
footer::after {
    content: '';
    display: block;
    width: 356px;
    height: 345px;
    position: absolute;
    bottom: 0;
    right: 0;
    background: url('../images/footer_bg.png') no-repeat;
}
.footer-navbar {
    width: 100%;
    height: 64px;
    margin: 40px 0 10px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.footer-logo {
    display: flex;
    align-items: center;
    opacity: 0;
}
.friend-link {
    display: flex;
    align-items: center;
    opacity: 0;
}
.friend-link a {
    height: 14px;
    line-height: 14px;
    font-size: 14px;
    padding-right: 10px;
    border-right: 1px solid var(--footer-text-color);
    margin-right: 10px;
}
.friend-link a:last-child {
    border-right: none;
    margin-right: 0;
}
.friend-link a:hover {
    opacity: 0.7;
}
.footer-content {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.contact-infos {
    font-size: 14px;
    line-height: 40px;
    opacity: 0;
}
.info-row {
    display: flex;
}
.info-row p {
    margin-right: 50px;
}
.info-row p:last-child {
    margin-right: 0;
}
.footer_icon {
    vertical-align: middle;
    display: inline-block;
    width: 22px;
    height: 22px;
    background: url('../images/footer_icons.png') no-repeat;
    margin-right: 10px;
}
.footer_icon.icon_address {
    background-position: 0 0;
}
.footer_icon.icon_email {
    background-position: -22px 0;
}
.footer_icon.icon_phone {
    background-position: -44px 0;
}
.footer_icon.icon_qq {
    background-position: -66px 0;
}
.footer-qr {
    width: 120px;
    height: 120px;
    opacity: 0;
}
.footer-qr img {
    width: 100%;
}
.copyright {
    text-align: center;
    font-size: 14px;
    line-height: 20px;
    margin: 40px 0 30px 0;
    opacity: 0.58 !important;
}
.friend-link p {
    font-size: 16px;
    margin-right: 15px;
}
.friend-link a {
    height: 14px;
    line-height: 14px;
    font-size: 14px;
    padding-right: 15px;
    border-right: 1px solid var(--footer-text-color);
    margin-right: 15px;
}
@media screen and (max-width: 1920px) {
    .nav-item.active {
        border-bottom-width: 3px;
    }
    .dropdown-menu {
        top: calc(100% - 3px);
        border-top: 3px solid var(--primary-color);
    }
}
@media screen and (max-width: 1850px) {
    .qr-box {
        left: initial;
        transform: none;
        right: 0;
    }
    .qr-box::before {
        left: initial;
        transform: none;
        right: 24px;
    }
}
@media screen and (max-width: 1547px) {
    .nav-item {
        font-size: 14px;
        font-weight: normal;
        width: 90px;
    }
    .dropdown-menu {
        width: 90px;
    }
    .dropdown-menu li {
        font-size: 12px;
    }
}
@media screen and (max-width: 1440px) {
    .index_header {
        height: 550px;
    }
    .search_header {
        height: 450px;
    }
    .inner_header {
        height: 420px;
    }
}
@media screen and (max-width: 1366px) {
    .inner_header {
        height: 380px;
    }
    .infos {
        font-size: 12px;
    }
    .nav-item {
        width: 80px;
        font-size: 13px;
    }
    .dropdown-menu {
        width: 80px;
    }
    .friend-link p {
        font-size: 14px;
        margin-right: 10px;
    }
    .friend-link a {
        margin-right: 10px;
        padding-right: 10px;
    }
}
@media screen and (max-width: 1200px) {
    .index_header {
        height: 450px;
        margin-top: 80px;
    }
    .inner_header {
        height: 350px;
        margin-top: 79px;
    }
    .inner_title {
        width: 190px;
        height: 126px;
    }
    .inner_title h3 {
        font-size: 20px;
        height: 60px;
        line-height: 20px;
    }
    .navbar {
        height: 80px;
        background: rgba(53, 96, 205, 1);
        backdrop-filter: blur(20px) saturate(120%);
    }
    .navbar .container {
        border-bottom: none;
        align-items: center;
    }
    .logo {
        height: calc(100% - 20px);
        margin-top: 0;
    }
    .navbar-mini {
        background: rgba(53, 96, 205, 0.6);
    }
    .navbar-mini .logo {
        margin-top: 0;
    }
    .menu {
        display: none;
    }
    .m-menu-btn {
        display: flex;
        width: 30px;
        height: 30px;
        margin-top: 25px;
        margin-right: 20px;
        justify-content: center;
        flex-direction: column;
        gap: 8px;
        cursor: pointer;
    }
    .m-menu-btn div {
        width: 100%;
        height: 3px;
        background-color: #fff;
        transition: all 0.3s ease;
    }
    .close-btn div:nth-child(1) {
        rotate: 45deg;
    }
    .close-btn div:nth-child(2) {
        display: none;
    }
    .close-btn div:nth-child(3) {
        rotate: -45deg;
        margin-top: -11px;
    }
    .m-nav {
        position: fixed;
        padding: 100px 20px 20px 20px;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background: rgba(53, 96, 205, 0.7);
        backdrop-filter: blur(20px) saturate(120%);
        color: var(--header-text-color);
        z-index: 98;
    }
    .m-menu-item {
        position: relative;
    }
    .m-menu-item.on .m-submenu {
        max-height: 200px;
        border-bottom-width: 1px;
    }
    .m-menu-item.on .item-self span {
        rotate: -90px;
    }
    .item-self {
        display: flex;
        justify-content: space-between;
        height: 40px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.25);
    }
    .item-self a {
        flex: 1;
        font-size: 16px;
        line-height: 40px;
    }
    .item-self span {
        display: block;
        width: 40px;
        height: 40px;
        background: url('../images/icon_m_arrow.png') center center no-repeat;
        background-size: 16px auto;
        cursor: pointer;
        transition: all 0.8s ease;
    }
    .m-submenu {
        max-height: 0;
        padding-left: 10px;
        border-bottom: 0px solid rgba(255, 255, 255, 0.25);
        overflow: hidden;
        transition: max-height 0.3s ease;
    }
    .m-submenu li {
        height: 36px;
        line-height: 36px;
        font-size: 14px;
        opacity: 0.8;
    }
    .footer-navbar {
        flex-wrap: wrap;
        height: auto;
        row-gap: 20px;
    }
    .footer-qr {
        display: none;
    }
    .copyright {
        margin: 20px auto;
        font-size: 12px;
    }
}
@media screen and (max-width: 768px) {
    .index_header {
        height: 160px;
    }
    .search_header {
        height: 200px;
    }
    .m-menu-btn {
        margin-top: 0;
        margin-right: 10px;
        width: 20px;
        height: 24px;
        gap: 6px;
    }
    .m-menu-btn div {
        height: 2px;
    }
    .close-btn div:nth-child(3) {
        margin-top: -8px;
    }
    .inner_header {
        height: 200px;
    }
    .inner_title {
        height: 100px;
    }
    .inner_title h3 {
        font-size: 20px;
        width: 100%;
        height: 60px;
        text-align: center;
        line-height: 60px;
    }
    .inner_infos .container {
        width: 100%;
        display: block;
    }
    .inner_breadcrumbs {
        flex: 1;
        height: 40px;
        margin-bottom: 0;
        padding-left: 10px;
        background-color: var(--primary-color);
        align-items: center;
        justify-content: start;
    }
    .inner_breadcrumbs a {
        font-size: 12px;
        margin-right: 8px;
        padding-right: 8px;
    }
    .inner_breadcrumbs a:first-child {
        padding-left: 0;
        background: none;
    }
    .container {
        width: calc(100% - 30px);
    }
    .friend-link {
        display: block;
    }
    .friend-link p {
        font-weight: bold;
    }
    .friend-link p,
    .friend-link a {
        display: inline-block;
        border: none;
    }
    .info-row {
        flex-wrap: wrap;
    }
    .footer_icon {
        margin-right: 0;
    }
}