/* 头部导航 */
.header {
    width: 100%;
    min-width: 1200px;
}

.header-bg {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    height: 98px;
    background: #800f0a url(../images/bg_header.png) no-repeat left -46px center;
    background-size: auto 100%;
    padding: 0 150px;
    box-sizing: border-box;
}

.header-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'FZQKBYSJW', sans-serif;
}

.header-logo h1 {
    font-size: 40px;
    color: #fff;
}

.header-logo h2 {
    font-size: 26px;
    color: #fff;
}

.header-btn {
    display: flex;
    align-items: center;
    justify-content: center;
}

.header-btn a {
    display: block;
    height: 26px;
    line-height: 26px;
    margin-left: 8px;
    font-size: 16px;
    color: #fff;
    text-align: center;
    padding: 0 8px;
    border-radius: 4px;
    background: rgba(255, 255, 255, 0.19);
}

.header-btn a:hover {
    background: rgba(167, 28, 28, 1);
}

.mobile-menu {
    display: none;
}

.nav-menu ul {
    display: flex;
    justify-content: center;
    height: 58px;
    line-height: 58px;
    background: #fff;
    margin: 0 auto;
}

.nav-menu li {
    display: inline-block;
    position: relative;
}

.nav-menu a {
    display: block;
    width: 100%;
    height: 100%;
    color: #000;
    font-size: 24px;
    padding: 0 32px;
}

.nav-menu a:hover {
    background-color: #bb0000;
    color: #fff;
}

.dropdown {
    display: none;
    width: 100%;
    height: auto !important;
    height: 40px;
    min-height: 40px;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: #fff;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
    z-index: 1;
}

.dropdown dd {
    display: block;
    position: relative;
}

.dropdown-third {
    display: none;
    position: absolute;
    left: 100%;
    top: 0;
    width: 160px;
    background-color: #fff;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
    z-index: 2;
}

.dropdown dd:hover > .dropdown-third {
    display: block;
    animation: fadeIn 0.3s;
}

.dropdown dd:hover > a {
    background-color: #bb0000;
    color: #fff;
}

.dropdown-third dd:hover > a {
    background-color: #bb0000;
    color: #fff;
}

.dropdown a {
    width: 100%;
    padding: 0 6px;
    box-sizing: border-box;
    font-size: 20px;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.nav-menu li:hover .dropdown {
    display: block;
    animation: fadeIn 0.3s;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.header video {
    width: 100%;
    height: 690px;
    object-fit: cover;
}

/* 主要内容区域 */
.main-content {
    width: 100%;
    margin: 0 auto;
}

.nav-1 {
    min-width: 1200px;
    height: 608px;
    background: url(../images/bg_1.png) no-repeat center center;
    background-size: cover;
}

.nav-box {
    width: 1600px;
    height: 100%;
    margin: 0 auto;
    padding: 40px 0;
    box-sizing: border-box;
    display: flex;
    justify-content: space-between;
}

/* 通知公告 */
.notice-section {
    width: 670px;
    height: 100%;
}

.title-box,
.title-box-2 {
    display: block;
    width: 100%;
    height: 86px;
    padding: 10px 0 20px;
    box-sizing: border-box;
    position: relative;
}

.title-box-2 {
    text-align: center;
}

.title-box h2,
.title-box-2 h2 {
    font-size: 36px;
    font-family: FZCCHJW;
    color: #bb0000;
}

.title-box span,
.title-box-2 span {
    font-size: 16px;
    color: #999;
}

.title-box a,
.title-box-2 a {
    position: absolute;
    right: 0;
    bottom: 18px;
    font-size: 14px;
    color: #bb0000;
    background: url(../images/icon_r.png) no-repeat right center;
    background-size: 10px 10px;
    padding-right: 14px;
}

.title-box-2 a {
    color: rgb(153, 153, 153);
}

.notice-list {
    width: 100%;
}

.notice-item {
    display: block;
    width: 100%;
    height: 105px;
    padding: 16px 10px;
    box-sizing: border-box;
    margin-bottom: 10px;
    background: #fff;
}

.notice-item a {
    display: flex;
    align-items: center;
    width: 100%;
}

.notice-item .date {
    min-width: 80px;
    text-align: center;
}

.notice-item .date h1 {
    font-size: 34px;
    font-weight: bold;
    color: #bb0000;
}

.notice-item .date h2 {
    font-size: 18px;
    color: #999;
}

.notice-item .notice-content {
    width: calc(100% - 80px);
    padding-left: 10px;
    box-sizing: border-box;
}

.notice-item .notice-content h1 {
    font-size: 22px;
    font-weight: bold;
    color: rgb(30, 27, 27);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 6px;
}

.notice-item .notice-content p {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 18px;
    color: #999;
}

/* 新闻资讯 */
.news-section {
    width: calc(100% - 702px);
    height: 100%;
}

.news-box {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 450px;
}

.news-img {
    width: 468px;
    height: 100%;
    position: relative;
}

.news-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 10px;
}

.news-img p {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    color: #fff;
    font-size: 20px;
    text-align: center;
    height: 52px;
    line-height: 52px;
    padding: 0 16px;
    box-sizing: border-box;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    border-radius: 0 0 10px 10px;
}

.news-list {
    width: calc(100% - 486px);
    height: 100%;
}

.news-item {
    display: block;
    width: 100%;
    margin-bottom: 10px;
    padding: 0 16px;
    background: url(../images/icon_01.png) no-repeat left top 10px;
    background-size: 8px 8px;
    margin-bottom: 24px;
    -webkit-transition: -webkit-transform 800ms ease-in-out;
    transition: transform 800ms ease-in-out;
}

.news-item:hover {
    transform: translateY(-10px);
}

.news-item a {
    display: block;
    width: 100%;
}

.news-item a h1 {
    font-size: 22px;
    font-weight: bold;
    color: rgb(19, 27, 38);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 12px;
}

.news-item a p {
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 30px;
    font-size: 18px;
    color: rgb(153, 153, 153);
}

/* 本科生工作 */
.work-section {
    width: calc(50% - 20px);
    height: 416px;
}

.work-section:first-child {
    margin-right: 40px;
}

.work-list {
    width: 100%;
    height: 240px;
    margin-top: 24px;
    background: #fff;
}

.work-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    height: 50px;
    line-height: 50px;
    background: url(../images/icon_01.png) no-repeat left top 15px;
    background-size: 8px 8px;
    padding: 0 0 0 16px;
    box-sizing: border-box;
}

.work-item a {
    display: block;
    width: 100%;
    height: 100%;
    font-size: 20px;
    color: rgb(19, 27, 38);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.work-item span {
    display: inline-block;
    width: 116px;
    text-align: right;
    font-size: 16px;
    color: rgb(153, 153, 153);
}

/* 团学风采 */
.nav-3 {
    min-width: 1200px;
    height: 910px;
    background: url(../images/bb.png) no-repeat center center;
    background-size: cover;
}

.nav-3 .nav-box:first-child {
    height: 610px;
    padding: 20px 0;
}

.nav-3 .nav-box:last-child {
    height: 286px;
    padding: 20px 0;
}

.calendar-list {
    display: block;
    width: 100%;
}

.calendar-item {
    display: block;
    width: 100%;
    padding: 16px 10px;
    margin-bottom: 10px;
    border-radius: 6px;
    background: #fff;
    box-shadow: rgba(36, 41, 51, 0.1) 0rem 0.04167rem 0.09375rem 0rem;
}

.calendar-item:hover {
    border-bottom: 3px solid #bb0000;
}

.calendar-item a {
    display: flex;
    align-items: center;
    width: 100%;
    position: relative;
}

.calendar-item .date {
    min-width: 80px;
    text-align: center;
}

.calendar-item .date h1 {
    font-size: 34px;
    font-weight: bold;
    color: #bb0000;
}

.calendar-item .date h2 {
    font-size: 18px;
    color: #999;
}

.calendar-item .calendar-content {
    width: calc(100% - 150px);
    padding-left: 10px;
    box-sizing: border-box;
}

.calendar-item .calendar-content h1 {
    font-size: 22px;
    font-weight: bold;
    color: rgb(30, 27, 27);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 6px;
}

.calendar-item .calendar-content p {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: 18px;
    color: #999;
}

.calendar-item a>span {
    font-size: 12px;
    color: rgb(242, 121, 61);
    border: 1px solid rgb(242, 121, 61);
    border-radius: 4px 0 4px 0;
    padding: 0 4px;
    position: absolute;
    right: 20px;
    top: 0;
}

.team-section {
    width: 520px;
    height: 100%;
}

.calendar-section {
    width: calc(100% - 552px);
    height: 100%;
}

.student-section {
    width: 100%;
    height: 100%;
    background: #fff;
    border-radius: 8px;
    padding: 10px 20px;
    box-sizing: border-box;
}

.student-list {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.student-item {
    display: inline-block;
    width: calc((100% - 16px * (4 - 1)) / 4);
    height: 126px;
    background: rgb(255, 244, 242);
    border: 1px solid #E9E9E9;
    border-radius: 8px;
    padding: 10px 20px;
    box-sizing: border-box;
    margin-right: 16px;
    -webkit-transition: -webkit-transform 800ms ease-in-out;
    transition: transform 800ms ease-in-out;
}

.student-item:hover {
    transform: translateY(-10px);
}

.student-item:last-child {
    margin-right: 0;
}

.student-item a {
    display: flex;
    align-items: center;
    width: 100%;
    height: 100%;
}

.student-item a img {
    width: 50px;
    height: 50px;
    margin-right: 16px;
}

.student-item a p {
    font-size: 24px;
    font-weight: bold;
    color: rgb(51, 51, 51);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.nav-4 {
    width: 100%;
    height: 380px;
    background: url(../images/bg_3.png) no-repeat center bottom;
    background-size: cover;
}

.nav-5 {
    width: 100%;
    height: 880px;
    background: url(../images/bg_4.png) no-repeat center bottom;
    background-size: cover;
}

.brand-section {
    width: 100%;
    height: 100%;
}

.brand-section .title-box-2 h2,
.brand-section .title-box-2 span {
    color: #fff;
}

.brand-list {
    display: block;
    width: 100%;
    font-size: 0;
}

.brand-item {
    display: inline-block;
    width: calc((100% - 47px * (3 - 1)) / 3);
    height: 208px;
    margin: 12px 46px 12px 0;
    border-radius: 10px;
    -webkit-transition: -webkit-transform 800ms ease-in-out;
    transition: transform 800ms ease-in-out;
}

.brand-item:hover {
    transform: translateY(-10px);
}

.brand-item:nth-of-type(3n) {
    margin: 12px 0;
}

.brand-item a {
    display: block;
    width: 100%;
    height: 100%;
}

.brand-item a img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 10px;
}

/* 学术讲座 */
.nav-6 {
    min-width: 1200px;
    height: 560px;
    background: url(../images/bg_6.png) no-repeat center center;
    background-size: cover;
}

.title-box-3 {
    display: block;
    width: 100%;
    height: 76px;
    padding: 10px 0;
    box-sizing: border-box;
    position: relative;
}

.chair-section {
    width: 100%;
}

.title-box-3 {
    height: 56px;
    text-align: center;
    background: url(../images/bg_5.png) no-repeat center center;
    background-size: auto 100%;
}

.title-box-3 h2 {
    font-size: 36px;
    font-family: FZCCHJW;
    color: #bb0000;
}

.chair-list {
    display: block;
    width: 100%;
    height: 384px;
    margin: 20px 0;
    font-size: 0;
}

.chair-item {
    display: inline-block;
    width: calc((100% - 31px * (3 - 1)) / 3);
    height: 100%;
    margin: 0 10px;
}

.chair-item a {
    display: block;
    width: 100%;
    height: 100%;
    position: relative;
}

.chair-item a img {
    width: 100%;
    height: 346px;
    object-fit: cover;
    border-radius: 6px;
}

.chair-item a p {
    font-size: 22px;
    font-weight: bold;
    color: rgb(51, 51, 51);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    position: absolute;
    bottom: 0;
    left: 5%;
    width: 90%;
    height: 120px;
    line-height: 28px;
    padding: 28px 16px;
    box-sizing: border-box;
    background: #fff;
    border-radius: 2px;
    z-index: 1;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

/* 优质资源 */
.nav-7 {
    min-width: 1200px;
    height: 740px;
    background: url(../images/bg_7.png) no-repeat center center;
    background-size: 100% auto;
}

.resource-section {
    width: 100%;
}

.resource-list {
    display: block;
    width: 100%;
    height: 580px;
    margin: 30px auto;
    margin-bottom: 20px;
    position: relative;
}

.resource-list ul li {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 140px;
    height: 560px;
    position: relative;
    overflow: hidden;
    float: left;
}

.resource-list ul li .imgTop {
    width: 140px;
    height: 100%;
    margin-right: -10px;
}

.resource-list ul li .imgTop img {
    width: 92%;
    height: 100%;
    /* opacity: 0.4; */
    cursor: pointer;
    object-fit: cover;
    border-radius: 10px;
}

.resource-list ul li .imgTop img.tm {
    opacity: 1;
}

.resource-list ul li .imgCon {
    display: none;
    width: calc(100% - 0px);
    height: 560px;
    background: #fad1b0;
    border-radius: 6px;
    padding: 60px 6px;
    box-sizing: border-box;
}

.resource-list ul li .imgCon .list {
    width: 100%;
    height: 100%;
}

.resource-list ul li .imgCon .list .list-item {
    display: inline-block;
    width: calc(100% / 2 - 28px);
    /* height: 100%; */
    height: 200px;
    width: 288px;
    margin: 0 12px;
}

.resource-list ul li .imgCon .list .list-item a {
    display: block;
    width: 100%;
    height: 100%;
}

.resource-list ul li .imgCon .list .list-item a img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 6px;
}

.resource-list ul li .imgCon .list .list-item a p {
    font-size: 20px;
    font-weight: bold;
    color: rgb(51, 51, 51);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    display: block;
    height: 58px;
}

.resource-list ul li .imgCon .list .list-item a span {
    font-size: 18px;
    color: #666
}

.resource-list ul li.first {
    width: 758px;
}

.resource-list ul li.fast {
    position: absolute;
    right: 0px;
    top: 0px;
}

.resource-list ul li.active .imgCon {
    display: block;
    padding-top: 14px;
}

/* 微视频 */
.nav-8 {
    min-width: 1200px;
    height: 810px;
    background: url(../images/bg_8.png) no-repeat center bottom;
    background-size: 100% auto;
}

.video-section {
    width: 100%;
}

/* 页脚 */
.footer {
    min-width: 1600px;
    background-color: #292929;
    color: rgba(189, 189, 189, 0.64);
    padding: 17px 0;
    text-align: center;
}

.footer-content {
    width: 1400px;
    margin: 0 auto;
    padding: 0 15px;
    text-align: left;
}

.footer h1 {
    display: block;
    margin: 12px 0;
    font-size: 22px;
}

.footer a {
    display: inline-block;
    margin-right: 30px;
    font-size: 15px;
}

/* 字体 */
@font-face {
    font-family: 'FZQKBYSJW';
    src: url('../fonts/FZQKBYSJW.TTF') format('truetype');
}

@font-face {
    font-family: 'FZCCHJW';
    src: url('../fonts/FZCCHJW.TTF') format('truetype');
}

/* 幻灯片 */
.slider-container {
    position: relative;
    width: 1600px;
    margin: 0 auto;
    overflow: hidden;
    padding: 50px 0;
}

.slider-track {
    display: flex;
    transition: transform 0.5s ease;
    height: 250px;
    align-items: center;
    width: max-content;
}

.slider-slide {
    width: 280px;
    height: 200px;
    transition: all 0.5s ease;
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    /* margin: 0 8px; */
    margin: -20px;
    flex-shrink: 0;
}

.slider-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: all 0.5s ease;
}

.slider-slide.center {
    width: 386px;
    height: 250px;
    z-index: 2;
}

.slider-slide.side-1 {
    width: 346px;
    height: 200px;
    z-index: 1;
}

.slider-slide.side-2 {
    width: 326px;
    height: 160px;
    z-index: 0;
}


.slider-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 25px;
    height: 25px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    z-index: 10;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
}

.slider-nav:hover {
    background-color: rgba(255, 255, 255, 0.9);
}

.slider-prev {
    left: 20px;
    background-image: url(../images/icon_l.png);
    background-repeat: no-repeat;
    background-position: center center;
    background-size: 12px 12px;
}

.slider-next {
    right: 20px;
    background-image: url(../images/icon_r.png);
    background-repeat: no-repeat;
    background-position: center center;
    background-size: 12px 12px;
}

.slider-dots {
    position: absolute;
    bottom: 2px;
    left: 0;
    right: 0;
    display: flex;
    justify-content: center;
    z-index: 10;
}

.slider-dot {
    width: 8px;
    height: 8px;
    margin: 0 5px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
}

.slider-dot.active {
    background: rgb(0, 122, 255);
    transform: scale(1.2);
}

@media only screen and (min-width: 1px) and (max-width: 926px) {

    .header,
    .container,
    .footer-content,
    .slider-container {
        width: 100% !important;
        min-width: unset;
    }

    .header {
        padding: 0;
    }

    .header video {
        height: 15rem;
    }

    .main-content {
        padding: 0 0.5rem;
        background: #f3f3f4;
    }

    .nav-1,
    .nav-2,
    .nav-3,
    .nav-4,
    .nav-5,
    .nav-6,
    .nav-7,
    .nav-8 {
        display: block;
        width: 100% !important;
        height: auto !important;
        min-width: unset !important;
        padding: 0.3125rem 0;
        background: transparent !important;
    }

    .nav-box,
    .notice-section,
    .news-section,
    .brand-item,
    .chair-item,
    .work-section,
    .team-section,
    .calendar-section,
    .student-list {
        display: block;
        width: 100% !important;
        height: auto !important;
        padding: 0 !important;
    }

    .brand-list,
    .chair-list {
        height: auto !important;
        margin: 0.625rem 0 !important;
    }

    .resource-list {
        height: auto !important;
    }

    .resource-list ul li {
        float: none !important;
        display: inline-block;
        width: calc(50% - 3px) !important;
        height: auto !important;
        margin: 0.3125rem 0 !important;
        position: inherit !important;
    }

    .resource-list ul li:nth-of-type(n + 5),
    .brand-item:nth-of-type(n + 5) {
        display: none;
    }

    .header-logo {
        text-align: center;
        width: 100%;
    }

    .header-logo h1 {
        font-size: 1rem;
    }

    .header-bg {
        height: 2.5rem;
        position: relative;
    }

    .news-img,
    .header-btn,
    .resource-list ul li .imgCon,
    .header-logo h2 {
        display: none !important;
    }

    .news-list,
    .resource-list ul li .imgTop {
        width: 100% !important;
    }

    .student-item {
        display: flex;
        flex-direction: column;
        align-items: center;
        width: 100% !important;
        margin: 0.3125rem 0;
    }

    .brand-section .title-box-2 h2,
    .brand-section .title-box-2 span {
        color: #bb0000;
    }

    .work-list {
        background: transparent !important;
    }

    .slider-track {
        height: 6.25rem;
    }

    .slider-slide {
        width: 5.625rem !important;
        height: 5rem !important;
        margin: 0 0.15625rem !important;
    }

    .slider-slide.center {
        width: 6.25rem !important;
        height: 5.625rem !important;
    }

    .chair-item a p {
        font-size: 0.4375rem !important;
        padding: 0.46875rem !important;
        height: auto !important;
        line-height: 1.4 !important;
    }

    .title-box h2,
    .title-box-2 h2,
    .title-box-3 h2 {
        font-size: 1.5rem !important;
    }

    .chair-item {
        margin: 1rem 0;
    }

    .mobile-menu {
        display: block;
        position: absolute;
        left: 1rem;
        top: 50%;
        transform: translateY(-50%);
        width: 1rem;
        height: 1rem;
        background-image: url(../images/icon_menu.png);
        background-repeat: no-repeat;
        background-position: center center;
        background-size: 100% 100%;
        z-index: 10;
    }

    .mobile-menu.close {
        background-image: url(../images/icon_close.png);
    }

    .nav-menu {
        /* display: none; */
        width: 100%;
        height: auto !important;
        height: 2.5rem;
        min-height: 2.5rem;
        background: #fff;
        position: fixed;
        left: 0;
        top: 2.5rem;
        z-index: 9;
    }

    .nav-menu ul {
        display: block;
        width: 100%;
        height: 100%;
        font-size: 0;
    }

    .nav-menu ul li {
        display: inline-block;
        width: calc(50% - 1px);
        height: 2.5rem;
        line-height: 2.5rem;
        text-align: center;
    }

    .nav-menu a {
        font-size: 1.125rem;
    }

    .nav-menu dd a {
        font-size: 0.875rem;
    }

    .footer {
        min-width: unset !important;
        padding: 0.625rem 0.46875rem;
    }

    .footer h1 {
        font-size: 0.5rem !important;
    }

    .footer a {
        display: block;
        margin: 0.15625rem 0 !important;
    }

    .brand-item:hover {
        transform: none !important;
    }

    .slider-nav {
        display: none !important;
    }
}