/* 基础样式重置与变量定义 */
:root {
    --primary-blue: #1a73e8;
    --ai-blue: #2962ff;
    --ai-light-blue: #e3f2fd;
    --ai-dark-blue: #0d47a1;
    --gray-100: #f8f9fa;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-600: #6c757d;
    --gray-800: #343a40;
    --white: #ffffff;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Microsoft YaHei", "Segoe UI", Roboto, sans-serif;
}

body {
    background-color: var(--gray-100);
    color: var(--gray-800);
    line-height: 1.6;
    position: relative;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

.clearfix::after {
    content: "";
    display: table;
    clear: both;
}

/* 顶部区域样式 */
.topWrap {
    background: linear-gradient(135deg, var(--ai-dark-blue) 0%, var(--ai-blue) 100%);
    padding: 0;
    box-shadow: var(--shadow);
}

.topDiv {
    max-width: 1200px;
    margin: 0 auto;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img {
    height: 70px;
    width: auto;
}

.topR {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.topR_t {
    margin-bottom: 10px;
    font-size: 14px;
}

.topR_t a {
    padding: 0 8px;
    color: var(--white);
    position: relative;
}

.topR_t a:hover {
    color: rgba(255, 255, 255, 0.8);
}

.topR_t a:not(:last-child)::after {
    content: "|";
    position: absolute;
    right: -3px;
}

.Search {
    position: relative;
}

.search_text {
    border: none;
    padding: 8px 15px;
    border-radius: 20px;
    width: 220px;
    font-size: 14px;
    outline: none;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.1);
}

.fdj {
    position: absolute;
    right: 5px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--ai-blue);
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.fdj:before {
    content: "";
    width: 16px;
    height: 16px;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'%3E%3Cpath d='M15.5 14h-.79l-.28-.27C15.41 12.59 16 11.11 16 9.5 16 5.91 13.09 3 9.5 3S3 5.91 3 9.5 5.91 16 9.5 16c1.61 0 3.09-.59 4.23-1.57l.27.28v.79l5 4.99L20.49 19l-4.99-5zm-6 0C7.01 14 5 11.99 5 9.5S7.01 5 9.5 5 14 7.01 14 9.5 11.99 14 9.5 14z'/%3E%3C/svg%3E") center no-repeat;
}

/* 导航菜单样式 */
.navWrap {
    background: var(--white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav {
    max-width: 1200px;
    margin: 0 auto;
}

.nav>ul {
    display: flex;
    justify-content: space-around;
}

.nav>ul>li {
    position: relative;
    padding: 15px 0;
}

.nav>ul>li>a {
    padding: 15px 20px;
    font-weight: 500;
    color: var(--gray-800);
    position: relative;
}

.nav>ul>li>a:hover {
    color: var(--ai-blue);
}

.nav>ul>li>a::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 3px;
    background: var(--ai-blue);
    transition: var(--transition);
    transform: translateX(-50%);
}

.nav>ul>li:hover>a::after {
    width: 80%;
}

.nav>ul>li>dl {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--white);
    min-width: 180px;
    box-shadow: var(--shadow);
    border-radius: 0 0 4px 4px;
    display: none;
    z-index: 100;
}

.nav>ul>li:hover>dl {
    display: block;
}

.nav>ul>li>dl dd {
    padding: 12px 20px;
    border-bottom: 1px solid var(--gray-200);
}

.nav>ul>li>dl dd:hover {
    background: var(--ai-light-blue);
}

/* 轮播图样式 */
.bannerWrap {
    max-width: 1200px;
    margin: 30px auto;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.slideBox {
    position: relative;
}

.slideBox .bd li {
    position: relative;
}

.slideBox .bd img {
    width: 100%;
    display: block;
}

.slideBox .hd {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
}

.slideBox .hd ul {
    display: flex;
}

.slideBox .hd li {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    margin: 0 5px;
    cursor: pointer;
}

.slideBox .hd li.on {
    background: var(--white);
}

.slideBox .prev,
.slideBox .next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 10;
    opacity: 0;
    transition: var(--transition);
}

.slideBox:hover .prev,
.slideBox:hover .next {
    opacity: 1;
}

.slideBox .prev {
    left: 20px;
}

.slideBox .next {
    right: 20px;
}

.slideBox .prev::before,
.slideBox .next::before {
    content: "";
    width: 15px;
    height: 15px;
    border-top: 3px solid var(--white);
    border-left: 3px solid var(--white);
}

.slideBox .prev::before {
    transform: rotate(-45deg);
    margin-left: 5px;
}

.slideBox .next::before {
    transform: rotate(135deg);
    margin-right: 5px;
}

/* 主要内容区域 */
.vsb-box {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.dynamic {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--ai-blue);
}

.dynamic h2 {
    font-size: 22px;
    color: var(--ai-dark-blue);
    position: relative;
    padding-left: 15px;
}

.dynamic h2::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 5px;
    height: 20px;
    background: var(--ai-blue);
    border-radius: 3px;
}

.dynamic span a img {
    height: 7px;
}

/* 中心动态区域 */
.new_inforBox {
    background: var(--white);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 30px;
    box-shadow: var(--shadow);
}

.newBox {
    display: flex;
    gap: 20px;
}

.new_pic {
    flex: 1;
    border-radius: 6px;
    overflow: hidden;
}

.new_pic img {
    width: 100%;
    height: auto;
    transition: var(--transition);
}

.new_pic:hover img {
    transform: scale(1.03);
}

.new_list {

    flex: 1;
width:600px;
}

.dynamic_list li {
    padding: 12px 0;
    border-bottom: 1px dashed var(--gray-300);
}

.dynamic_list li:last-child {
    border-bottom: none;
}

.dynamic_list li a {
    display: flex;
    align-items: center;
}

.dynamic_list li a span {
    color: var(--gray-600);
    font-size: 14px;
    min-width: 70px;
}

.dynamic_list li a em {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.dynamic_list li a:hover {
    color: var(--ai-blue);
}

/* 通知公告和开放基金 */
.second-line {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
}

.second-line-bigbox {
    flex: 1;
}

.informBox {
    background: var(--white);
    border-radius: 8px;
    padding: 20px;
    box-shadow: var(--shadow);
    height: 100%;
}

.infor_list li {
    padding: 12px 0;
    border-bottom: 1px dashed var(--gray-300);
}

.infor_list li:last-child {
    border-bottom: none;
}

.infor_list li a {
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.infor_list li a:hover {
    color: var(--ai-blue);
}

/* 科研环境 */
.the-last {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
}

.last-line-box {
    flex: 2;
}

.last-line-title {
    background: var(--white);
    border-radius: 8px 8px 0 0;
    padding: 20px 20px 10px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

#u_u9_demo {
    background: var(--white);
    border-radius: 0 0 8px 8px;
    padding: 20px;
}

.titlestyle1030249 {
    margin-top: 10px;
    font-size: 14px;
    text-align: center;
    color: var(--gray-800);
}

/* 友情链接 */
.yqlj {
    flex: 1;
}

.yqlj-title {
    background: var(--white);
    border-radius: 8px 8px 0 0;
    padding: 20px 20px 10px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.yqlj-content {
    background: var(--white);
    border-radius: 0 0 8px 8px;
}

.lj-box {
    border-radius: 6px;
    transition: var(--transition);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.lj-box:hover {
    background: var(--ai-light-blue) !important;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

/* 页脚样式 */
.footWrap {
    background: linear-gradient(135deg, var(--ai-dark-blue) 0%, var(--ai-blue) 100%);
    color: var(--white);
    padding: 30px 0;
    margin-top: 50px;
}

.footDiv_one {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.foot_one p {
    margin-bottom: 10px;
    font-size: 14px;
}

/* AI主题装饰元素 */
.ai-node {
    position: absolute;
    width: 8px;
    height: 8px;
    background: var(--ai-blue);
    border-radius: 50%;
    z-index: -1;
}

.ai-connection {
    position: absolute;
    background: linear-gradient(to right, transparent, var(--ai-blue), transparent);
    height: 1px;
    z-index: -1;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .newBox {
        flex-direction: column;
    }

    .second-line {
        flex-direction: column;
    }

    .the-last {
        flex-direction: column;
    }

    .nav>ul {
        flex-wrap: wrap;
    }
}

@media (max-width: 768px) {
    .topDiv {
        flex-direction: column;
        text-align: center;
    }

    .topR {
        align-items: center;
        margin-top: 15px;
    }

    .nav>ul>li {
        padding: 10px 0;
    }

    .nav>ul>li>a {
        padding: 10px 15px;
        font-size: 14px;
    }
}