html, body{
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    background-color: #F0F2F5;
    font-family: "Microsoft YaHei";
}
section{
    width: 85vw;
    max-width: 1500px;
    margin: 0 auto;
}

.header .header-top{
    background-color: #000;
}
.header-top-inner{
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}
.header .header-top li{
    list-style: none;
    padding: 0 20px;;
    font-size: 16px;
    float: left;
    border-right: 1px solid #fff;
}
.top-btn{
    background-color: #2E54DB;
    border-radius: 50px;
    color: #fff;
    padding: 5px 15px;
    margin-left: 15px;
}
.header .header-top li:first-child{
    padding-left: 0;
}
.header .header-top li:last-child{
    border-right: none;
}
.header .header-top a{
    text-decoration: none;
    color: #fff;
}
.header .header-top .btn-join{
    background-color: #ec1313;
    color: #fff;
    padding: 5px 15px;
    font-size: 20px;
    font-weight: bold;
    margin: 0 15px;
}
.header .header-top .btn-login{
    background-color: #60b9ff;
    color: #fff;
    padding: 5px 15px;
    font-size: 20px;
    font-weight: bold;
    margin: 0 15px;
}

.nav ul li{
    float: left;
    margin-left: 2vw;
}
.nav ul li a{
    color: #3d3d3d;
    font-size: 17px;
}

.header .logo{
    display: flex;
    align-items: center;
}
.header .logo img{
    width: 120px;
    margin-right: 10px;
}
.header .title{
    color: #333;
    width: 275px;
    text-align: justify
}
.header .title h1{
    font-size: 22px;
    font-weight: bold;
    text-align-last: justify
}
.header .title h2{
    font-size: 12px;
    text-align-last: justify;
    margin-top: 2px;
}

.banner img{
    width: 100%;
    height: 45vh;
}

.main-panel{
    margin-top: 30px;
    position: relative;
}
.main-panel h2{
    display: inline-block;
    font-size: 26px;
    color: #2E54DB;
    background: linear-gradient(to right, #2E54DB, #60b9ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    border: none;
    padding: 10px 0;
    margin-bottom: 10px;
    position: relative;
    font-weight: 600;
}

.main-panel h2::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 80px;
    height: 4px;
    background: linear-gradient(to right, #2E54DB, #60b9ff);
    border-radius: 2px;
}

.more-link {
    position: absolute;
    right: 0;
    top: 15px;
    color: #8a8a8a;
    font-size: 14px;
    transition: all 0.3s ease;
    text-decoration: none;
}

.more-link:hover {
    color: #2E54DB;
    transform: translateX(5px);
}

.more-link .layui-icon {
    font-size: 12px;
    margin-left: 2px;
}

.list-inner{
    margin-top: 15px;
}
.list-inner .list-content{
    border-radius: 5px;
    overflow: hidden;
}
.list-inner .list_img{
    width: 100%;
    height: 150px;
}
.list-inner .list-content .list-info{
    padding: 10px;
    background-color: #fff;
    
}
.list-inner .list-content .list-info a{
    line-height: 24px;
    font-weight: bold;
    min-height: 48px;
    font-size: 16px;
    overflow: hidden;
    height: 48px;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}
.list-inner .list-content .list-bottom{
    background-color: #fff;
    padding: 10px;
    border-top: 1px solid #eee;
    display: flex;
    justify-content: space-between;
    color: #868686;
}

.footer{
    background-color: #fff;
    padding: 15px 0;
    margin-top: 50px;
}
.footer .footer-inner{
    display: flex;
    align-items: center;
    justify-content: left;
}
.footer .footer-logo{
    width: 100px;
    margin-right: 20px;
    opacity: 0.7;
}
.footer .footer-info{
    font-size: large;
    color: #333
}
.footer .footer-copyright{
    color: #868686;
    font-size: 12px;
    margin-top: 10px;
}

section.sub-section{
    width: 60vw;
    margin: 0 auto;
    min-height: 65vh;
}
.sub-section-title{
    display: inline-block;
    padding: 8px 20px;
    background-color: #228cf9;
    color: #fff;
    font-size: 22px;
    margin-top: 20px;
}
.sub-section-content{
    width: 60vw;
    margin: 20px auto;
    background-color: #fff;
    padding: 30px;
    border-radius: 5px;
    min-height: 47vh;
}
.sub-section-content .content-title{
    font-size: 24px;
    text-align: center;
}
.sub-section-content .content-subtitle{
    margin-top: 15px;
    font-size: 18px;
    color: #333;
    text-align: center;
    padding-bottom: 20px;
    border-bottom: 1px solid #ccc;
    margin-bottom: 20px;
}
.sub-section-content p{
    font-size: 20px;
    line-height: 38px;
    text-indent: 2em;
}

ul.mine-list li{
    display: flex;
    align-items: center;
    background-color: #ededed;
    margin-bottom: 15px;
}
ul.mine-list .list_img{
    width: 130px;
    height: 100px
}
ul.mine-list .list-info{
    width: calc(100% - 130px);
    height: 100px;
    padding: 15px;
    box-sizing: border-box;
}
ul.mine-list .list-info .list-title{
    font-size: 18px;
    color: #333;
}

.list-content {
    list-style: none;
    padding: 0;
    margin: 20px 0 0 0;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
}

.list-content li {
    padding: 16px 24px;
    border-bottom: 1px solid #f0f0f0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
}

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

.list-content li:hover {
    background-color: #f8f9fa;
    transform: translateX(5px);
}

.list-content li a {
    color: #333;
    text-decoration: none;
    flex: 1;
    margin-right: 20px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 15px;
    line-height: 1.5;
}

.list-content li .list-time {
    color: #999;
    font-size: 14px;
    padding-left: 15px;
    border-left: 1px solid #eee;
}

/* 文件列表样式 */
.file-list {
    margin-top: 20px;
}

.file-item {
    display: flex;
    padding: 20px;
    background-color: #fff;
    border-radius: 8px;
    margin-bottom: 15px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    align-items: center;
    transition: all 0.3s ease;
}

.file-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.file-icon {
    width: 60px;
    height: 60px;
    background-color: #f6f8fa;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 20px;
    position: relative;
}

.file-icon .layui-icon {
    display: none;
}

/* 纯CSS文件图标 */
.file-icon::before {
    content: "";
    position: absolute;
    width: 36px;
    height: 42px;
    background-color: #e53935;
    border-radius: 3px;
    display: block;
}

.file-icon::after {
    content: "PDF";
    position: absolute;
    color: white;
    font-size: 12px;
    font-weight: bold;
    top: 30px;
    letter-spacing: 1px;
}

/* 文件图标的折角效果 */
.file-icon .corner {
    position: absolute;
    top: 0;
    right: 8px;
    width: 0;
    height: 0;
    border-style: solid;
    border-width: 8px 8px 0 0;
    border-color: white transparent transparent transparent;
    z-index: 2;
}

.file-info {
    flex: 1;
}

.file-name {
    font-size: 18px;
    font-weight: 600;
    color: #333;
    margin-bottom: 5px;
}

.file-desc {
    font-size: 14px;
    color: #666;
}

.file-size {
    margin: 0 30px;
    font-size: 14px;
    color: #888;
}

.file-download {
    margin-left: 10px;
}

.download-btn {
    display: inline-block;
    padding: 8px 20px;
    background: linear-gradient(to right, #2E54DB, #60b9ff);
    color: #fff;
    border-radius: 30px;
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s ease;
}

.download-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 10px rgba(46, 84, 219, 0.2);
}

.download-btn .layui-icon {
    margin-right: 5px;
}