* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    min-width: 1240px;
    overflow-x: auto;
    margin: 0;
    padding: 0;
}

/* 修改最小宽度设置 */
@media screen and (min-width: 1240px) {
    body {
        min-width: 1240px;
        overflow-x: auto;
    }
}

/* 修改容器样式 */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    box-sizing: border-box;
}

.logo-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    background-color: white;
    width: 100%;
}

.logo, .university-logo {
    height: 60px;
}

.lab-name {
    height: 40px;
}

.main-nav {
    display: flex;
    background-color: #f8f9fa;
    border-bottom: 1px solid #ddd;
    align-items: center;
}

.nav-wrapper {
    background-color: #f8f9fa;
    border-bottom: 1px solid #ddd;
    position: sticky;
    top: 0;
    z-index: 100;
    width: 100%;
}

.nav-menu {
    display: flex;
    flex-direction: row;
    align-items: center;
    background-color: #f8f9fa;
}

.nav-item {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: #333;
    padding: 8px 15px;
    margin: 0 5px;
    border-radius: 4px;
    transition: background-color 0.3s;
}

.nav-item:hover {
    background-color: #e9ecef;
}

.nav-item img {
    width: 24px;
    height: 24px;
    margin-right: 8px;
}

.language-switch {
    margin-left: auto;
}

.language-switch a {
    color: #0056b3;
    text-decoration: none;
}

.search-box {
    display: flex;
    justify-content: flex-end;
    padding: 10px 0;
}

.search-box input {
    padding: 5px 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    margin-right: 5px;
}

.search-box button {
    padding: 5px 15px;
    background-color: #0056b3;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.search-box button:hover {
    background-color: #004494;
}

/* 主要内容样式 */
main {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 0;
    box-sizing: border-box;
}

.lab-intro {
    margin-bottom: 40px;
}

.lab-intro h2, .news h2 {
    color: #333;
    border-bottom: 2px solid #0056b3;
    padding-bottom: 10px;
    margin-bottom: 20px;
}

.intro-content {
    display: flex;
    gap: 30px;
}

.intro-text {
    flex: 2;
}

.intro-text p {
    margin-bottom: 15px;
    text-align: justify;
}

.intro-text ul {
    margin-left: 20px;
    margin-bottom: 15px;
}

.intro-text li {
    margin-bottom: 10px;
}

.intro-image {
    flex: 1;
}

.intro-image img {
    width: 100%;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

/* 新闻部分样式 */
.news-list {
    background-color: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
}

.news-item {
    display: flex;
    align-items: baseline;
    gap: 1rem;
    margin-bottom: 0.5em;
}

.news-item .news-date {
    min-width: 100px;
    flex-shrink: 0;
}

.news-item a {
    flex: 1;
    text-decoration: none;
    color: #333;
}

.news-item a:hover {
    text-decoration: underline;
}

.more-news {
    display: block;
    text-align: right;
    color: #0056b3;
    text-decoration: none;
    margin-top: 10px;
}

.more-news:hover {
    text-decoration: underline;
}

/* 成员页面样式 */
.members-section {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.members-section h2 {
    color: #333;
    border-bottom: 2px solid #0056b3;
    padding-bottom: 10px;
    margin: 40px 0 20px;
}

.members-section h2:first-child {
    margin-top: 0;
}

.members-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
    width: 100%;
}

.professor-grid {
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
}

.member-card {
    text-decoration: none;
    color: inherit;
    text-align: center;
    margin: 0 auto;
    width: 100%;
}

.member-card:hover {
    transform: translateY(-5px);
}

.member-photo {
    width: 100%;
    aspect-ratio: 3/4;
    margin: 0 auto 10px;
    overflow: hidden;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    background-color: #f8f9fa;
}

.member-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
    display: block;
}

.member-card:hover .member-photo img {
    transform: scale(1.05);
}

.member-name {
    font-size: 1.1em;
    margin-top: 8px;
    color: #333;
}

/* 成员详情页样式 */
.member-profile {
    padding: 40px 0;
}

.profile-header {
    display: flex;
    gap: 40px;
    margin-bottom: 40px;
}

.profile-photo {
    flex: 0 0 300px;
}

.profile-photo img {
    width: 100%;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.profile-info {
    flex: 1;
}

.profile-info h1 {
    font-size: 2em;
    margin-bottom: 10px;
    color: #333;
}

.profile-title {
    font-size: 1.2em;
    color: #666;
    margin-bottom: 20px;
}

.profile-contact {
    line-height: 1.8;
}

.profile-content h2 {
    color: #333;
    border-bottom: 2px solid #0056b3;
    padding-bottom: 10px;
    margin: 30px 0 20px;
}

.profile-content ul {
    list-style: none;
    padding-left: 0;
}

.profile-content li {
    margin-bottom: 10px;
    padding-left: 20px;
    position: relative;
}

.profile-content li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: #0056b3;
}

/* 教授简介页面特殊样式 */
.profile-text {
    line-height: 1.8;
    text-align: justify;
    margin-bottom: 30px;
}

.profile-text p {
    text-indent: 2em;
    margin-bottom: 1em;
    line-height: 1.6;
}

.profile-text a {
    color: #007bff;
    text-decoration: none;
}

.profile-text a:hover {
    text-decoration: underline;
}

.profile-contact ol {
    margin-left: 20px;
    margin-top: 10px;
}

.profile-contact li {
    margin-bottom: 10px;
    line-height: 1.6;
}

.education-list {
    list-style: none;
    padding-left: 0;
}

.education-list li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 15px;
    line-height: 1.6;
}

.education-list li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: #0056b3;
}

.article-list {
    list-style: none;
    padding-left: 0;
    counter-reset: pub-counter; 
}

.article-list li {
    position: relative;
    padding-left: 40px; 
    margin-bottom: 15px;
    line-height: 1.6;
    counter-increment: pub-counter; 
}

/* 3. 使用计数器显示编号 */
.article-list li::before {
    content: "[" counter(pub-counter) "]";
    position: absolute;
    left: 0;
    color: #070707; 
    font-weight: normal;
    width: 30px; 
    text-align: right;
}


header {
    width: 100%;
    background-color: white;
}

.news-detail {
    padding: 2rem 0;
    max-width: 800px;
    margin: 0 auto;
}

.news-content {
    padding: 0 20px;
}

.news-content h1 {
    font-size: 24px;
    color: #333;
    text-align: center;
    margin-bottom: 10px;
    font-weight: normal;
}

.news-date {
    text-align: center;
    color: #666;
    font-size: 14px;
    margin-bottom: 30px;
}

.news-text {
    margin-bottom: 20px;
}

.news-text p {
    text-indent: 2em;
    margin-bottom: 1em;
    text-align: justify;
    line-height: 1.8;
    font-size: 16px;
    color: #333;
}

.news-images {
    margin-bottom: 30px;
}

.news-figure {
    text-align: center;
    margin: 0 auto;
}

.news-figure img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
}

.news-figure figcaption {
    margin-top: 10px;
    color: #666;
    font-size: 14px;
    text-align: center;
    line-height: 1.4;
}

.news-archive {
    padding: 2rem 0;
}

.archive-year {
    margin-bottom: 3rem;
}

.archive-year h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #eee;
}

.archive-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.archive-item {
    display: flex;
    align-items: baseline;
    gap: 1rem;
}

.archive-item .news-date {
    min-width: 100px;
    color: #666;
}

.archive-item a {
    color: #333;
    text-decoration: none;
}

.archive-item a:hover {
    color: #007bff;
    text-decoration: underline;
}

.research-fields {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid #eee;
}

.research-description {
    text-indent: 2em;
    margin-bottom: 1em;
    line-height: 1.6;
}

.project-list {
    list-style: none;
    padding: 0;
}

.project-list li {
    margin-bottom: 1.5em;
    padding-bottom: 1.5em;
    border-bottom: 1px solid #eee;
}

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

.project-list span {
    display: block;
    margin-bottom: 0.3em;
}

.project-title {
    font-weight: bold;
    color: #333;
}

.project-type {
    color: #666;
    font-size: 0.95em;
}

.project-period, .project-role {
    color: #666;
    font-size: 0.9em;
}

.indent {
    text-indent: 2em;
    display: inline-block;
}

.intro-text p {
    margin-bottom: 1em;
    line-height: 1.6;
}

.news-item {
    display: flex;
    align-items: baseline;
    gap: 1rem;
    margin-bottom: 0.5em;
}

.news-item .news-date {
    min-width: 100px;
    flex-shrink: 0;
}

.news-item a {
    flex: 1;
    text-decoration: none;
    color: #333;
}

.news-item a:hover {
    text-decoration: underline;
}

/* 平板电脑适配 (768px 及以下) */
@media screen and (max-width: 768px) {
    body {
        min-width: auto;
    }

    .container {
        width: 95%;
        padding: 0 10px;
    }
    
    .nav-menu {
        flex-direction: column;
        text-align: center;
    }
    
    .nav-item {
        margin: 10px 0;
        justify-content: center;
    }
}

/* 手机适配 (480px 及以下) */
@media screen and (max-width: 480px) {
    .header {
        padding: 10px 0;
    }
    
    .logo {
        max-width: 200px;
    }
    
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: #f8f9fa;
        padding: 10px 0;
        box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    }
    
    .nav-menu.active {
        display: flex;
        flex-direction: column;
    }
    
    .menu-toggle {
        display: block;
        font-size: 24px;
    }
    
    .search-box {
        flex-direction: column;
        gap: 10px;
    }
    
    .search-box input {
        width: 100%;
    }
}

/* 添加汉堡菜单样式 */
.menu-toggle {
    display: none;
    cursor: pointer;
    padding: 10px;
}

@media screen and (max-width: 480px) {
    .menu-toggle {
        display: block;
    }
    
    .nav-menu.active {
        display: flex;
    }
}

/* 成员列表响应式样式 */
@media screen and (max-width: 768px) {
    .members-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
}

@media screen and (max-width: 480px) {
    .members-grid {
        grid-template-columns: 1fr;
    }
    
    .member-card {
        margin: 10px 0;
    }
    
    .member-photo {
        width: 150px;
        height: 150px;
    }
}

/* 添加响应式样式 */
@media screen and (max-width: 768px) {
    .logo-container {
        flex-wrap: wrap;
        gap: 10px;
        justify-content: center;
    }
    
    .logo, .university-logo {
        height: 40px;
    }
    
    .lab-name {
        height: 30px;
    }
    
    .intro-content {
        flex-direction: column;
    }
    
    .intro-image {
        order: -1;
    }
}

@media screen and (max-width: 480px) {
    .logo-container {
        flex-direction: column;
    }
    
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: #f8f9fa;
        padding: 10px 0;
        box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    }
    
    .nav-menu.active {
        display: flex;
        flex-direction: column;
    }
    
    .menu-toggle {
        display: block;
        font-size: 24px;
    }
    
    .search-box {
        flex-direction: column;
        gap: 10px;
    }
    
    .search-box input {
        width: 100%;
    }
}

/* 移动端适配 */
@media screen and (max-width: 768px) {
    .news-detail {
        padding: 1rem;
    }

    .news-header h1 {
        font-size: 1.5rem;
    }
}

@media screen and (max-width: 768px) {
    .news-figure img {
        max-width: 100%;
    }
}

/* 相册样式 */
.album-container {
    padding: 2rem 0;
}

.album-section {
    margin-bottom: 3rem;
}

.album-section h2 {
    color: #333;
    border-bottom: 2px solid #0056b3;
    padding-bottom: 10px;
    margin-bottom: 2rem;
}

.month-section {
    margin-bottom: 2rem;
}

.month-section h3 {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 1rem;
    padding-left: 10px;
    border-left: 3px solid #0056b3;
}

.photo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.photo-item {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    background-color: #fff;
    transition: transform 0.3s ease;
}

.photo-item:hover {
    transform: translateY(-5px);
}

.photo-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
}

.photo-desc {
    padding: 10px;
    color: #666;
    font-size: 14px;
    text-align: center;
    background-color: #fff;
}

/* 响应式设计 */
@media screen and (max-width: 768px) {
    .photo-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: 1rem;
    }

    .photo-item img {
        height: 150px;
    }

    .month-section {
        margin-bottom: 1.5rem;
    }

    .month-section h3 {
        font-size: 1.1rem;
    }
}

@media screen and (max-width: 480px) {
    .photo-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: 0.8rem;
    }

    .photo-item img {
        height: 120px;
    }

    .photo-desc {
        padding: 8px;
        font-size: 12px;
    }
}

/* 组会资料样式 */
.materials-list {
    display: grid;
    gap: 1rem;
    margin: 2rem 0;
}

.material-item {
    display: flex;
    align-items: center;
    padding: 1rem;
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 8px;
}

/* 管理员界面样式 */
.login-form {
    max-width: 400px;
    margin: 4rem auto;
    padding: 2rem;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.admin-nav {
    display: flex;
    gap: 1rem;
    padding: 1rem 0;
    border-bottom: 1px solid #ddd;
    margin-bottom: 2rem;
}

.admin-nav a {
    text-decoration: none;
    color: #333;
    padding: 0.5rem 1rem;
    border-radius: 4px;
}

.admin-nav a.active {
    background: #0056b3;
    color: white;
}

.upload-section {
    margin-bottom: 3rem;
}

/* 管理员新闻管理样式 */
.news-list-admin {
    margin-top: 2rem;
}

.admin-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

.admin-table th,
.admin-table td {
    padding: 0.75rem;
    border: 1px solid #ddd;
    text-align: left;
}

.admin-table th {
    background-color: #f8f9fa;
}

.admin-table tr:hover {
    background-color: #f8f9fa;
}

.admin-table .action-buttons {
    display: flex;
    gap: 0.5rem;
}

.admin-table button {
    padding: 0.25rem 0.5rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.admin-table .edit-btn {
    background-color: #ffc107;
    color: #000;
}

.admin-table .delete-btn {
    background-color: #dc3545;
    color: #fff;
}

/* 富文本编辑器样式 */
#news-content {
    min-height: 200px;
    padding: 1rem;
}

/* 新闻类型切换相关样式 */
.external-url-group {
    transition: all 0.3s ease;
}

/* 图片上传预览样式 */
.image-preview-item {
    position: relative;
    margin: 20px 0;
    padding: 15px;
    border: 1px solid #ddd;
    border-radius: 4px;
    background-color: #f8f9fa;
}

.image-preview-item img {
    display: block;
    width: 30%;
    margin: 0 auto 10px;
    border-radius: 4px;
}

.image-description {
    width: 100%;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    margin-top: 10px;
}

.delete-image-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    padding: 5px 10px;
    background-color: #dc3545;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.delete-image-btn:hover {
    background-color: #c82333;
}

/* 内容段落样式 */
.content-section {
    background-color: #f8f9fa;
    padding: 20px;
    margin-bottom: 20px;
    border-radius: 4px;
    border: 1px solid #ddd;
}

.content-section .form-group {
    margin-bottom: 15px;
}

/* 添加段落按钮样式 */
#add-section-btn {
    background-color: #6c757d;
    color: white;
    padding: 8px 16px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    margin: 10px 0;
    display: block;
    width: 100%;
}

#add-section-btn:hover {
    background-color: #5a6268;
}

/* 文本区域样式 */
.news-content-part {
    width: 100%;
    min-height: 100px;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    resize: vertical;
}

/* 图片上传容器样式 */
.image-upload-container {
    margin-top: 10px;
}

.image-descriptions {
    margin-top: 10px;
}

@media screen and (max-width: 768px) {
    .content-section {
        gap: 1.5rem;
    }

    .news-images {
        max-width: 100%;
    }

    .news-figure {
        max-width: 100%;
    }
}

@media screen and (max-width: 768px) {
    .news-detail {
        padding: 1rem;
        max-width: 100%;
    }

    .news-header h1 {
        font-size: 1.5rem;
    }

    .content-section {
        margin-bottom: 1.5rem;
    }

    .news-images {
        margin: 1rem 0;
    }
}

.news-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

.section {
    margin-bottom: 40px;
}

.header {
    margin-bottom: 20px;
    text-align: center;
}

.title {
    font-size: 24px;
    margin: 0;
    margin-bottom: 10px;
    font-weight: normal;
}

.time {
    color: #666;
    font-size: 14px;
    margin: 0;
}

.content {
    line-height: 1.6;
    margin-bottom: 20px;
}

.content p {
    text-indent: 2em;
    margin-bottom: 1em;
    text-align: justify;
    line-height: 1.8;
    font-size: 16px;
    color: #333;
}

.image-container {
    text-align: center;
    margin: 20px 0;
}

.image-container img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
}

.image-desc {
    color: #666;
    font-size: 14px;
    margin: 10px 0;
    text-align: center;
}

/* 响应式设计 */
@media screen and (max-width: 768px) {
    .news-container {
        padding: 10px;
    }
    
    .title {
        font-size: 20px;
    }

    .section {
        margin-bottom: 30px;
    }

    .content {
        margin-bottom: 15px;
    }

    .image-container {
        margin: 15px 0;
    }
}

/* 照片管理样式 */
.photo-previews {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.photo-preview-item {
    position: relative;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    background-color: #f8f9fa;
}

.photo-preview-item img {
    width: 100%;
    height: 150px;
    object-fit: cover;
    border-radius: 4px;
    margin-bottom: 10px;
}

.photo-description {
    width: 100%;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
}

.photo-category {
    margin-bottom: 2rem;
}

.photo-category h4 {
    color: #333;
    font-size: 1.2rem;
    margin-bottom: 1rem;
    padding-bottom: 5px;
    border-bottom: 2px solid #0056b3;
}

.month-group {
    margin-bottom: 1.5rem;
}

.month-group h5 {
    color: #666;
    font-size: 1rem;
    margin-bottom: 1rem;
    padding-left: 10px;
    border-left: 3px solid #0056b3;
}

#uploaded-photos .photo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

#uploaded-photos .photo-item {
    position: relative;
    border: 1px solid #ddd;
    border-radius: 4px;
    overflow: hidden;
    background-color: #fff;
}

#uploaded-photos .photo-item img {
    width: 100%;
    height: 150px;
    object-fit: cover;
    display: block;
}

#uploaded-photos .photo-desc {
    padding: 8px;
    color: #666;
    font-size: 14px;
    text-align: center;
    background-color: #fff;
    margin: 0;
}

#uploaded-photos .delete-btn {
    position: absolute;
    top: 5px;
    right: 5px;
    padding: 5px 10px;
    background-color: rgba(220, 53, 69, 0.9);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
    opacity: 0;
    transition: opacity 0.3s;
}

#uploaded-photos .photo-item:hover .delete-btn {
    opacity: 1;
}

#uploaded-photos .delete-btn:hover {
    background-color: #dc3545;
}

@media screen and (max-width: 768px) {
    .photo-previews {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }

    #uploaded-photos .photo-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }

    .photo-preview-item img,
    #uploaded-photos .photo-item img {
        height: 120px;
    }
}

@media screen and (max-width: 480px) {
    .photo-previews {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }

    #uploaded-photos .photo-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }

    .photo-preview-item img,
    #uploaded-photos .photo-item img {
        height: 100px;
    }
}

/* 照片放大模态框样式 */
.photo-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    z-index: 1000;
    overflow: auto;
}

.photo-modal.active {
    display: flex;
    justify-content: center;
    align-items: center;
}

.modal-content {
    position: relative;
    max-width: 90%;
    max-height: 90vh;
    margin: auto;
}

.modal-image {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
}

.modal-desc {
    position: absolute;
    bottom: -40px;
    left: 0;
    width: 100%;
    padding: 10px;
    background-color: rgba(255, 255, 255, 0.9);
    color: #333;
    text-align: center;
    font-size: 16px;
}

.close-modal {
    position: absolute;
    top: 20px;
    right: 20px;
    color: #fff;
    font-size: 30px;
    font-weight: bold;
    cursor: pointer;
    z-index: 1001;
}

.close-modal:hover {
    color: #ccc;
}

.modal-prev,
.modal-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    color: #fff;
    font-size: 30px;
    font-weight: bold;
    cursor: pointer;
    padding: 20px;
    z-index: 1001;
}

.modal-prev {
    left: 20px;
}

.modal-next {
    right: 20px;
}

.modal-prev:hover,
.modal-next:hover {
    color: #ccc;
}

@media screen and (max-width: 768px) {
    .modal-content {
        max-width: 95%;
    }

    .close-modal,
    .modal-prev,
    .modal-next {
        font-size: 24px;
    }

    .modal-prev {
        left: 10px;
    }

    .modal-next {
        right: 10px;
    }
}

/* 资料管理样式 */
.materials-list {
    margin-top: 2rem;
}

.materials-list h3 {
    color: #333;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #0056b3;
}

.month-section {
    margin-bottom: 2rem;
}

.month-section h4 {
    color: #666;
    font-size: 1.2rem;
    margin-bottom: 1rem;
    padding-left: 10px;
    border-left: 3px solid #0056b3;
}

.materials-grid {
    display: grid;
    gap: 1rem;
}

.material-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 8px;
}

.material-info {
    flex: 1;
}

.material-title {
    font-size: 1.1rem;
    color: #000;
    margin-bottom: 0.5rem;
    border-left: 4px solid #1a3989;
    padding-left: 10px;
    font-weight: bold;
}

.material-desc {
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    padding-left: 14px;
}

.material-date {
    color: #666;
    font-size: 0.9rem;
    padding-left: 14px;
}

.material-actions {
    display: flex;
    gap: 0.5rem;
}

.download-btn,
.delete-btn {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.9rem;
    text-decoration: none;
    transition: background-color 0.3s;
    display: block;
}

.download-btn {
    background-color: #28a745;
    color: white;
}

.download-btn:hover {
    background-color: #218838;
}

.delete-btn {
    background-color: #dc3545;
    color: white;
}

.delete-btn:hover {
    background-color: #c82333;
}

#material-description {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    resize: vertical;
    min-height: 100px;
}

@media screen and (max-width: 768px) {
    .material-item {
        flex-direction: column;
        align-items: flex-start;
    }

    .material-actions {
        margin-top: 1rem;
        width: 100%;
        justify-content: flex-end;
    }

    .download-btn,
    .delete-btn {
        padding: 0.4rem 0.8rem;
        font-size: 0.8rem;
    }
}

@media screen and (max-width: 480px) {
    .material-title {
        font-size: 1rem;
    }

    .material-desc {
        font-size: 0.8rem;
    }

    .material-date {
        font-size: 0.7rem;
    }

    .material-actions {
        flex-direction: column;
        gap: 0.3rem;
    }
}

.footer {
    margin-top: 50px;
    padding: 20px 0;
    background-color: #f8f9fa;
    border-top: 1px solid #e9ecef;
    text-align: center;
    font-size: 14px;
    color: #666;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

.footer-text {
    margin: 5px 0;
}

.footer a {
    color: #666;
    text-decoration: none;
}

.footer a:hover {
    color: #333;
    text-decoration: underline;
}

.motto-box {
    padding: 5px 0;
    margin-bottom: 25px;
}

.motto-box p {
    margin: 0;
    color: #333;
    font-size: 1.1em;
    line-height: 1.6;
    text-align: left;
}