/* 关于我们页面样式 */

/* 页面通用样式 */
.about-page {
    max-width: 1400px;
    margin: 0 auto;
    padding: 80px 20px;
}

/* 标题样式 */
.about-section {
    width: 100%;
    padding: 60px 0;
    margin: 0;
    position: relative;
    background-color: transparent;
    overflow: hidden;
}

.about-section:first-of-type {
    padding-top: 40px;
}

.about-section:last-of-type {
    padding-bottom: 40px;
}

.about-section-title {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 40px;
    height: 80px;
    width: 100%;
}

.about-section-title img {
    width: auto;
    height: 100%;
    object-fit: contain;
    max-width: 100%;
}

/* 隐藏文字 */
.about-section-title h2 {
    display: none;
}

.about-section-title h2::after {
    content: 'GROUP PROFILE';
    font-size: 16px;
    color: #99B5DB;
    margin-top: 5px;
}

/* 集团简介样式 */
.about-intro {
    max-width: 1400px;
    margin: 0 auto 40px;
    padding: 40px 20px;
    background: #fff;
    border-radius: 15px;
}

.intro-stats {
    display: flex;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 40px;
}

.stat-item {
    flex: 1;
    text-align: center;
    padding: 30px 40px;
    border-radius: 20px;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.8));
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

/* 不同背景色的统计项 */
.stat-item:nth-child(1) {
    background: #E8F4FF;  /* 浅蓝色背景 */
}

.stat-item:nth-child(2) {
    background: #FFF6E8;  /* 浅黄色背景 */
}

.stat-item:nth-child(3) {
    background: #E8FFF8;  /* 浅绿色背景 */
}

.stat-number {
    font-size: 48px;
    color: #003B90;
    font-weight: bold;
    margin-bottom: 10px;
    display: flex;
    align-items: baseline;
    justify-content: center;
}

.stat-number span {
    font-size: 24px;
    margin-left: 5px;
    color: #003B90;
}

.stat-label {
    color: #003B90;
    font-size: 16px;
}

.intro-text {
    font-size: 16px;
    line-height: 1.8;
    color: #333;
    margin: 0;
    text-align: justify;
}

/* 企业文化样式 */
.culture-grid {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.culture-item {
    text-align: center;
    padding: 2rem;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

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

.culture-item img {
    width: 80px;
    height: 80px;
    margin-bottom: 1.5rem;
}

.culture-item h3 {
    font-size: 1.5rem;
    color: #333;
    margin-bottom: 1rem;
}

.culture-item p {
    color: #666;
    line-height: 1.6;
    font-size: 1rem;
}

/* 发展历程样式 */
.timeline-section {
    width: 100%;
    position: relative;
    overflow: hidden;
}

.timeline-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100vw;
    height: 100%;
    background: linear-gradient(180deg, #0066CC 0%, #003B90 100%);
    z-index: -1;
}

/* 时间轴导航 */
.timeline-nav {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 50px;
    margin-bottom: 60px;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

.timeline-years {
    display: flex;
    align-items: center;
    gap: 20px;
    max-width: 1200px;
    overflow: hidden;
    position: relative;
}

/* 年份标签样式 */
.year-tag {
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: pointer;
    position: relative;
    transition: all 0.3s ease;
}

.year-dot {
    width: 12px;
    height: 12px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    margin-bottom: 10px;
    transition: all 0.3s ease;
}

.year-line {
    width: 2px;
    height: 40px;
    background: rgba(255, 255, 255, 0.3);
    margin-bottom: 10px;
    transition: all 0.3s ease;
}

.year-text {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    transition: all 0.3s ease;
}

/* 激活状态 */
.year-tag.active {
    transform: scale(1.1);
}

.year-tag.active .year-dot {
    background: #fff;
    transform: scale(1.2);
}

.year-tag.active .year-line {
    background: #fff;
    height: 60px;
}

.year-tag.active .year-text {
    color: #fff;
    font-weight: bold;
}

/* 导航箭头 */
.nav-arrow {
    width: 40px;
    height: 40px;
    border: none;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    transition: all 0.3s ease;
}

.nav-arrow:hover {
    background: rgba(255, 255, 255, 0.2);
}

.nav-arrow.prev {
    left: 20px;
}

.nav-arrow.next {
    right: 20px;
}

/* 时间轴内容 */
.timeline-contents {
    position: relative;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 60px;
}

.timeline-content-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 50%;
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    z-index: 2;
}

.timeline-content-nav:hover {
    background: rgba(255, 255, 255, 0.2);
}

.timeline-content-nav.prev {
    left: 10px;
}

.timeline-content-nav.next {
    right: 10px;
}

.timeline-grid-wrapper {
    overflow: hidden;
    position: relative;
    max-width: 1400px;
    margin: 0 auto;
}

.timeline-grid {
    display: flex;
    gap: 0;
    transition: transform 0.3s ease;
    width: 100%;
}

.timeline-content {
    flex: 0 0 12.5%;
    min-width: 12.5%;
}

.timeline-card {
    padding: 30px 20px;
    border-radius: 0;
    color: white;
    text-align: center;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: 200px;
    background: linear-gradient(90deg, #0066CC 0%, #003B90 100%); /* 默认背景色 */
    opacity: 0.5; /* 默认透明度 */
    transition: all 0.3s ease;
}

/* 激活状态的卡片样式 */
.timeline-content.active .timeline-card {
    background: linear-gradient(90deg, #00A0E9 0%, #0066CC 100%); /* 激活时的背景色 */
    opacity: 1; /* 激活时的透明度 */
}

.timeline-card .year {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 15px;
}

.timeline-card .event {
    font-size: 20px;
    margin-bottom: 10px;
    font-weight: 500;
}

.timeline-card .description {
    font-size: 16px;
    line-height: 1.6;
    opacity: 0.9;
}

/* 响应式调整 */
@media (max-width: 1200px) {
    .timeline-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 992px) {
    .timeline-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .timeline-grid {
        grid-template-columns: 1fr;
    }
}

/* 荣誉资质样式 */
.honors-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.honor-item {
    text-align: center;
}

.honor-item img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    margin-bottom: 1rem;
    transition: transform 0.3s ease;
}

.honor-item:hover img {
    transform: scale(1.05);
}

.honor-item h4 {
    font-size: 1.1rem;
    color: #333;
    margin-bottom: 0.5rem;
}

/* 响应式调整 */
@media (max-width: 1024px) {
    .culture-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .honors-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .culture-grid,
    .honors-grid {
        grid-template-columns: 1fr;
    }
    
    .timeline-item {
        flex-direction: column;
        text-align: center;
    }
    
    .timeline-year {
        width: auto;
        padding-right: 0;
        margin-bottom: 1rem;
    }
}

/* 页面头部样式 */
.about-header {
    position: relative;
    height: 400px;
    background: url('../images/20241228162603.png') no-repeat center center;
    background-size: cover;
    display: flex;
    align-items: center;
    padding: 0 2rem;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
    position: relative;
    z-index: 2;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.mascot {
    width: 120px;
    height: auto;
}

.header-left h1 {
    font-size: 3rem;
    color: white;
    font-weight: normal;
}

.header-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
}

/* 移动端适配 */
@media screen and (max-width: 768px) {
    .about-header {
        height: 300px;
    }

    .header-content {
        padding: 80px 15px 0;
    }

    .mascot {
        width: 80px;
    }

    .header-left h1 {
        font-size: 36px;
    }

    .header-bg {
        height: 100px;
    }
}

/* 导航栏样式 */
.header {
    position: absolute;
    width: 100%;
    top: 0;
    left: 0;
    z-index: 1000;
    background: transparent;
    padding: 1rem 0;
    transition: all 0.3s ease;
}

.header nav {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* 导航菜单文字颜色 */
.nav-menu > li > a {
    color: #fff;
}

/* 滚动时的导航栏样式 */
.header.scrolled {
    position: fixed;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.header.scrolled .nav-menu > li > a {
    color: var(--text-color);
}

/* 移动端适配 */
@media screen and (max-width: 768px) {
    .nav-menu {
        display: none;
    }

    .nav-menu.active {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: var(--header-height);
        left: 0;
        width: 100%;
        background: #fff;
        padding: 20px;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    }

    .mobile-menu-btn {
        display: flex;
    }
}

/* 移动端适配 */
@media screen and (max-width: 768px) {
    .about-section-title {
        height: 60px;
        margin-bottom: 30px;
    }

    .about-section-title img {
        width: 60px;
        height: 60px;
    }

    .about-section-title h2 {
        font-size: 28px;
    }

    .intro-stats {
        flex-direction: column;
        gap: 15px;
    }

    .stat-item {
        padding: 20px;
    }

    .stat-number {
        font-size: 36px;
    }

    .stat-number span {
        font-size: 18px;
    }
}

/* 集团宣传片样式 */
.video-section {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    gap: 2rem;
    margin-top: 2rem;
}

.video-main {
    flex: 1;
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    background: #000;
}

.video-display {
    width: 100%;
    position: relative;
    padding-top: 56.25%; /* 16:9 比例 */
}

.video-preview {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: none;
}

.video-preview.active {
    display: block;
}

.video-list {
    width: 300px;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.video-item {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 1.5rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.video-item.active {
    background: #E8F4FF;
}

.item-number {
    font-size: 24px;
    font-weight: bold;
    color: #003B90;
}

.item-title {
    font-size: 16px;
    color: #333;
}

.video-item:hover {
    transform: translateX(-5px);
}

/* 响应式调整 */
@media (max-width: 1440px) {
    .video-section {
        padding: 0 40px;
    }
}

@media (max-width: 1024px) {
    .video-section {
        flex-direction: column;
    }
    
    .video-list {
        width: 100%;
        flex-direction: row;
        overflow-x: auto;
        padding-bottom: 1rem;
    }
    
    .video-item {
        min-width: 250px;
    }
}

@media (max-width: 768px) {
    .video-section {
        padding: 0 20px;
    }
}

/* 发展历程样式 */
.timeline-section {
    background: linear-gradient(180deg, #0066CC 0%, #003B90 100%);
    padding: 60px 0;
    position: relative;
    overflow: hidden;
    border-radius: 12px;
}

.timeline-header {
    position: relative;
    margin-bottom: 3rem;
}

.timeline-dots {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    margin: 0 auto;
    max-width: 1200px;
}

.timeline-dots::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 2px;
    background: rgba(255, 255, 255, 0.3);
    z-index: 1;
}

.dot {
    width: 12px;
    height: 12px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    position: relative;
    z-index: 2;
    cursor: pointer;
    transition: all 0.3s ease;
}

.dot.active {
    background: #fff;
    transform: scale(1.2);
}

.timeline-years {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1rem;
    max-width: 1200px;
    margin: 1rem auto 0;
}

.year {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
    text-align: center;
    transform: translateX(-50%);
}

.timeline-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 1rem;
}

.timeline-item {
    text-align: center;
    opacity: 0.7;
    transition: all 0.3s ease;
}

.timeline-item.active {
    opacity: 1;
}

.year-block {
    font-size: 18px;
    font-weight: bold;
    margin-bottom: 1rem;
    color: #76C5F0;
}

.event {
    font-size: 14px;
    line-height: 1.4;
    color: white;
}

/* 响应式调整 */
@media (max-width: 1024px) {
    .timeline-content {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 768px) {
    .timeline-content {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .timeline-dots,
    .timeline-years {
        display: none;
    }
    
    .timeline-section {
        padding: 2rem 1rem;
    }
}

/* 奖项荣誉样式 */
.awards-section {
    margin: 0 -50vw;
    padding: 60px calc(50vw - 700px);
    position: relative;
}

.awards-columns {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    max-width: 1400px;
    margin: 0 auto;
}

.awards-column {
    position: relative;
    padding: 20px 0;
}

.timeline-line {
    position: absolute;
    left: 6px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: #0066CC;
}

.award-items {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.award-item {
    position: relative;
    padding-left: 30px;
    transition: all 0.3s ease;
}

.award-dot {
    position: absolute;
    left: 0;
    top: 8px;
    width: 14px;
    height: 14px;
    background: #0066CC;
    border-radius: 50%;
    transform: translateX(-6px);
}

.award-content {
    background: #E8F4FF;
    padding: 20px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.award-year {
    color: #0066CC;
    font-size: 18px;
    font-weight: bold;
    margin-bottom: 8px;
}

.award-text {
    color: #333;
    font-size: 14px;
    line-height: 1.6;
}

/* 悬停效果 */
.award-item:hover .award-content {
    transform: translateX(10px);
    background: #D6EBFF;
}

/* 响应式调整 */
@media (max-width: 1024px) {
    .awards-columns {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .awards-columns {
        grid-template-columns: 1fr;
    }
    
    .award-items {
        gap: 30px;
    }
}

/* 科研成果样式 */
.research-stats {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 60px;
    max-width: 1400px;
    margin: 0 auto 60px;
    padding: 0 20px;
}

.stat-card {
    background: #fff;
    padding: 20px 40px;
    border-radius: 8px;
    text-align: center;
    transition: all 0.3s ease;
}

.stat-card:nth-child(1) {
    background: #E8F4FF;
}

.stat-card:nth-child(2) {
    background: #FFF6E8;
}

.stat-card:nth-child(3) {
    background: #E8FFF8;
}

.stat-card:nth-child(4) {
    background: #FFE8F4;
}

.stat-card:nth-child(5) {
    background: #F4E8FF;
}

.stat-card .stat-number {
    font-size: 36px;
    color: #0066CC;
    font-weight: bold;
    margin-bottom: 8px;
}

.stat-card .stat-number span {
    font-size: 16px;
    margin-left: 4px;
}

.stat-card .stat-label {
    color: #666;
    font-size: 14px;
}

/* 时间轴样式 */
.research-timeline {
    max-width: 800px;
    margin: 0 auto 60px;
    padding-left: 20px;
    border-left: 2px solid #0066CC;
}

.timeline-item {
    position: relative;
    padding: 20px 0;
    padding-left: 30px;
}

.timeline-dot {
    position: absolute;
    left: -41px;
    top: 28px;
    width: 16px;
    height: 16px;
    background: #0066CC;
    border-radius: 50%;
}

.timeline-content {
    background: #E8F4FF;
    padding: 20px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.timeline-content:hover {
    transform: translateX(10px);
    background: #D6EBFF;
}

.timeline-content .year {
    color: #0066CC;
    font-size: 18px;
    font-weight: bold;
    margin-bottom: 8px;
}

.timeline-content .description {
    color: #333;
    font-size: 14px;
    line-height: 1.6;
}

/* 图片展示区样式 */
.research-gallery {
    margin-top: 40px;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.gallery-grid img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.gallery-grid img:hover {
    transform: scale(1.05);
}

/* 响应式调整 */
@media (max-width: 1024px) {
    .research-stats {
        flex-wrap: wrap;
    }

    .stat-card {
        flex: 1 1 calc(33.333% - 20px);
    }

    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .research-stats {
        flex-direction: column;
    }

    .stat-card {
        width: 100%;
    }

    .gallery-grid {
        grid-template-columns: 1fr;
    }

    .timeline-content {
        padding: 15px;
    }
}

/* 科研成果内容区域左右布局样式 */
.research-content {
    display: flex;
    gap: 40px;
    margin-top: 60px;
    max-width: 1400px;
    margin: 60px auto 0;
    padding: 0 20px;
}

/* 左侧时间轴样式调整 */
.research-timeline {
    flex: 1;
    max-width: 50%;
    position: relative;
    margin: 0;
    padding: 0;
    border: none;
}

/* 时间轴垂直线 */
.research-timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: #0066CC;
}

/* 时间轴项目样式重置和更新 */
.research-timeline .timeline-item {
    position: relative;
    padding-left: 40px;
    margin-bottom: 40px;
    display: block !important;
    opacity: 1 !important;
    text-align: left;
}

/* 时间轴圆点 */
.research-timeline .timeline-dot {
    position: absolute;
    left: -5px;
    top: 12px;
    width: 12px;
    height: 12px;
    background: #0066CC;
    border-radius: 50%;
    border: 2px solid #fff;
}

/* 内容样式重置和更新 */
.research-timeline .timeline-content {
    background: transparent;
    padding: 0;
    display: block !important;
    opacity: 1 !important;
    transform: none;
    text-align: left;
}

/* 年份样式 */
.research-timeline .timeline-content .year {
    color: #0066CC;
    font-size: 20px;
    font-weight: bold;
    margin-bottom: 12px;
    display: block;
}

/* 描述文字样式 */
.research-timeline .timeline-content .description {
    color: #333;
    font-size: 16px;
    line-height: 1.6;
    margin: 0;
    display: block;
}

/* 悬停效果 */
.research-timeline .timeline-item:hover {
    transform: translateX(10px);
    transition: transform 0.3s ease;
}

.research-timeline .timeline-item:hover .timeline-dot {
    background: #fff;
    border-color: #0066CC;
    transition: all 0.3s ease;
}

/* 移除可能冲突的样式 */
.research-timeline .timeline-content.active {
    display: block;
}

/* 响应式调整 */
@media (max-width: 1024px) {
    .research-timeline {
        max-width: 100%;
    }
}

@media (max-width: 768px) {
    .timeline-item {
        padding-left: 30px;
        margin-bottom: 30px;
    }
    
    .timeline-content .year {
        font-size: 18px;
    }
    
    .timeline-content .description {
        font-size: 14px;
    }
}

/* 右侧图片展示区样式调整 */
.research-gallery {
    flex: 1;
    max-width: 50%;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.gallery-grid img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.gallery-grid img:hover {
    transform: scale(1.05);
}

/* 响应式调整 */
@media (max-width: 1024px) {
    .research-content {
        flex-direction: column;
    }

    .research-timeline,
    .research-gallery {
        max-width: 100%;
    }

    .gallery-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .gallery-grid {
        grid-template-columns: 1fr;
    }
}

/* 合作伙伴版块样式更新 */
.partners-section {
    background: #F3F9FC;
    margin: 0 calc(-50vw + 50%);
    margin-bottom: 0;
    padding: 60px 0;
    position: relative;
    width: 100vw;
    left: 50%;
    right: 50%;
    transform: translateX(-50%);
}

/* 内容容器 */
.partners-section .about-section-title,
.partners-slogan,
.partners-grid {
    max-width: 1400px;
    margin-left: auto;
    margin-right: auto;
    padding: 0 20px;
}

/* 标语样式 */
.partners-slogan {
    text-align: center;
    font-size: 24px;
    color: #333;
    margin-bottom: 40px;
}

/* 合作伙伴网格布局 */
.partners-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
}

/* 合作伙伴项目样式 */
.partner-item {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    transition: all 0.3s ease;
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.partner-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.partner-item img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: all 0.3s ease;
}

/* 响应式调整 */
@media (max-width: 1440px) {
    .about-section > *,
    .timeline-nav,
    .timeline-contents,
    .awards-columns,
    .research-stats,
    .research-content,
    .partners-section .about-section-title,
    .partners-slogan,
    .partners-grid {
        padding: 0 40px;
    }
}

@media (max-width: 768px) {
    .about-section > *,
    .timeline-nav,
    .timeline-contents,
    .awards-columns,
    .research-stats,
    .research-content,
    .partners-section .about-section-title,
    .partners-slogan,
    .partners-grid {
        padding: 0 20px;
    }
}

/* 创始人寄语样式 */
.founder-message {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    gap: 60px;
    align-items: center;
}

.message-content {
    flex: 1;
    background: #fff;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.message-text {
    font-size: 16px;
    line-height: 1.8;
    color: #333;
    margin: 0;
}

.founder-image {
    width: 400px;
    flex-shrink: 0;
}

.founder-image img {
    width: 100%;
    height: auto;
    border-radius: 12px;
}

/* 响应式调整 */
@media (max-width: 1200px) {
    .founder-message {
        gap: 40px;
    }
    
    .founder-image {
        width: 300px;
    }
}

@media (max-width: 768px) {
    .founder-message {
        flex-direction: column-reverse;
        gap: 30px;
    }
    
    .founder-image {
        width: 100%;
        max-width: 400px;
        margin: 0 auto;
    }
    
    .message-content {
        padding: 30px;
    }
}

/* 响应式调整 */
@media (max-width: 1440px) {
    .about-intro {
        padding: 40px;
        margin: 0 40px 40px;
    }
}

@media (max-width: 768px) {
    .about-intro {
        padding: 30px 20px;
        margin: 0 20px 30px;
    }
    
    .intro-stats {
        flex-direction: column;
        gap: 15px;
    }
}


/* 响应式调整 */
@media screen and (max-width: 768px) {


    .submenu-content {
        flex-direction: column;
        padding: 0;
    }  
}

/* 新闻列表样式 */
.news-container {
    max-width: 1400px;
    margin: 60px auto 40px;
    padding: 0 20px;
}

.news-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.news-item {
    display: flex;
    gap: 30px;
    padding: 20px;
    background: #fff;
    transition: all 0.3s ease;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
}

.news-item:hover {
    background: #F5F9FF;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.news-image {
    flex: 0 0 300px;
    height: 200px;
    overflow: hidden;
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.news-item:hover .news-image img {
    transform: scale(1.05);
}

.news-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.news-title {
    font-size: 20px;
    font-weight: bold;
    color: #333;
    margin-bottom: 15px;
    line-height: 1.4;
}

.news-desc {
    font-size: 16px;
    color: #666;
    line-height: 1.6;
    margin-bottom: 20px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: #999;
    font-size: 14px;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .news-item {
        flex-direction: column;
        gap: 15px;
    }

    .news-image {
        flex: 0 0 auto;
        height: 200px;
    }

    .news-title {
        font-size: 18px;
    }

    .news-desc {
        font-size: 14px;
        -webkit-line-clamp: 2;
    }
} 

/* 分页模块样式 */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 40px;
    gap: 20px;
}

.pagination li {
    list-style: none;
}

.page-numbers {
    display: flex;
    align-items: center;
    gap: 8px;
}

.page-num,
.page-btn {
    min-width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid #E5E5E5;
    border-radius: 4px;
    color: #666;
    text-decoration: none;
    transition: all 0.3s ease;
}

.page-num:hover,
.page-btn:hover {
    color: #0066CC;
    border-color: #0066CC;
    background: #F5F9FF;
}

.page-num.active {
    background: #0066CC;
    color: #fff;
    border-color: #0066CC;
}

.page-ellipsis {
    color: #999;
    padding: 0 8px;
}

.page-jump {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #666;
    margin-left: 10px;
}

.jump-input {
    width: 50px;
    height: 32px;
    border: 1px solid #E5E5E5;
    border-radius: 4px;
    text-align: center;
    outline: none;
    transition: all 0.3s ease;
}

.jump-input:focus {
    border-color: #0066CC;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .pagination {
        flex-wrap: wrap;
        gap: 10px;
    }

    .page-jump {
        width: 100%;
        justify-content: center;
        margin-top: 10px;
    }
} 

/* 新闻标题样式 */
.news-section-title {
    font-size: 32px;
    color: #0066CC;
    font-weight: bold;
    margin-bottom: 30px;
    position: relative;
    display: inline-block;
}

.news-section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 40px;
    height: 4px;
    background: #0066CC;
    border-radius: 2px;
}
.image-grid img{ width: 31%; height:280px; margin: 0 10px;}