/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #374151;
    background-color: #ffffff;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: #1e3a8a;
    margin-left: -60px;
    white-space: nowrap;
}

.nav-logo i {
    margin-right: 10px;
    font-size: 1.8rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    margin-left: 455px;
}

.nav-link {
    text-decoration: none;
    color: #374151;
    font-weight: 500;
    font-size: 1rem;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: #1e3a8a;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #1e3a8a;
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

/* 下拉菜单样式 */
.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    min-width: 120px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    border-radius: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    list-style: none;
    padding: 4px 0;
    margin: 0;
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li {
    margin: 0;
}

.dropdown-menu a {
    display: block;
    padding: 6px 12px;
    color: #1e3a8a;
    text-decoration: none;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.dropdown-menu a:hover {
    background: rgba(30, 58, 138, 0.1);
    color: #1e3a8a;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background: #374151;
    margin: 3px 0;
    transition: 0.3s;
}

/* 首页横幅 */
.hero {
    height: 65vh;
    min-height: 400px;
    max-height: 550px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-content {
    max-width: 800px;
    padding: 0 20px;
    color: #374151;
    position: relative;
    z-index: 5;
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    animation: fadeInUp 1s ease;
    color: #374151;
}

.hero-subtitle {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    opacity: 0.9;
    animation: fadeInUp 1s ease 0.2s both;
    color: #374151;
}

.cta-button {
    display: inline-block;
    padding: 15px 30px;
    background: #1e3a8a;
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s ease;
    animation: fadeInUp 1s ease 0.4s both;
}

.cta-button:hover {
    background: #1e40af;
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(30, 58, 138, 0.3);
}

/* Hero Carousel Styles */
.hero-carousel {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
    image-rendering: pixelated;
    opacity: 0;
    transition: opacity 1s ease-in-out;
}

.hero-slide.active {
    opacity: 1;
}

.hero-dots {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}

.hero-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all 0.3s ease;
}

.hero-dot.active {
    background: #1e3a8a;
    transform: scale(1.2);
}

/* 课题组简介 */
.about-section {
    padding: 140px 0 100px 0;
    background: #f8fafc;
}

.about-section .container {
    max-width: 1280px;
    margin-left: 40px;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 60px;
    align-items: center;
    margin-bottom: 80px;
}

.about-content h2 {
    font-size: 2.5rem;
    color: #1e3a8a;
    margin-bottom: 1.5rem;
}

.about-content p {
    font-size: 1.12rem;
    margin-bottom: 1.5rem;
    color: #000;
    text-align: justify;
    line-height: 1.9;
}

.about-image {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 400px;
}

.about-image img {
    width: 100%;
    border-radius: 15px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.about-carousel {
    position: relative;
    width: 100%;
    height: 320px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    border-radius: 16px;
    box-shadow: 0 8px 24px rgba(30,58,138,0.10);
    background: #fff;
}

.carousel-img {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 0.6s;
    z-index: 1;
}
.carousel-img.active {
    opacity: 1;
    z-index: 2;
}

.carousel-dots {
    position: absolute;
    bottom: 16px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 3;
}
.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #e5e7eb;
    border: 2px solid #1e3a8a;
    cursor: pointer;
    transition: background 0.3s;
}
.dot.active {
    background: #1e3a8a;
}

.carousel-dots-alt {
    position: absolute;
    left: 50%;
    bottom: 12px;
    transform: translateX(-50%);
    display: flex;
    gap: 14px;
    z-index: 10;
    pointer-events: auto;
}
.about-carousel-alt.fade-mode {
    position: relative;
    width: 400px;
    height: 270px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 16px;
    box-shadow: 0 8px 24px rgba(30,58,138,0.10);
    overflow: hidden;
    background: none;
    pointer-events: auto;
}
.about-carousel-alt.fade-mode .carousel-img-list {
    width: 100%;
    height: 100%;
    position: relative;
}
.about-carousel-alt.fade-mode .carousel-img-alt {
    position: absolute;
    left: 0; top: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    border-radius: 16px;
    z-index: 1;
    transition: opacity 0.7s;
}
.about-carousel-alt.fade-mode .carousel-img-alt.active {
    opacity: 1;
    z-index: 2;
}
.carousel-dot {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: #222;
    border: 1.5px solid #222;
    cursor: pointer;
    transition: background 0.3s, border 0.3s;
    pointer-events: auto;
}
.carousel-dot.active {
    background: #000;
    border: 1.5px solid #000;
}
@media (max-width: 600px) {
    .about-carousel-alt.fade-mode {
        width: 98vw;
        min-width: 0;
        height: 38vw;
        max-width: 100vw;
        max-height: 60vw;
    }
    .carousel-dots-alt {
        bottom: 6px;
        gap: 10px;
    }
    .carousel-dot {
        width: 11px;
        height: 11px;
    }
}

.carousel-arrow {
    background: rgba(30,58,138,0.7);
    color: #fff;
    border: none;
    border-radius: 50%;
    width: 36px;
    height: 36px;
    font-size: 1.3rem;
    cursor: pointer;
    position: relative;
    z-index: 3;
    margin: 0 8px;
    transition: background 0.2s;
}
.carousel-arrow:hover {
    background: #1e3a8a;
}

/* 数据统计 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.stat-card {
    background: white;
    padding: 40px 30px;
    text-align: center;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.stat-card i {
    font-size: 2.5rem;
    color: #1e3a8a;
    margin-bottom: 1rem;
}

.stat-card h3 {
    font-size: 2.5rem;
    color: #1e3a8a;
    margin-bottom: 0.5rem;
}

.stat-card p {
    color: #000;
    font-weight: 500;
}

/* 研究方向 */
.research-section {
    padding: 100px 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    color: #1e3a8a;
    margin-bottom: 60px;
}

.research-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    align-items: stretch;
}

.research-card {
    background: white;
    padding: 40px 30px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid #e5e7eb;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.research-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.research-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #1e3a8a, #3b82f6);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.research-icon i {
    font-size: 2rem;
    color: white;
}

.research-card h3 {
    font-size: 1.3rem;
    color: #1e3a8a;
    margin-bottom: 1rem;
}

.research-card p {
    color: #000;
    margin-bottom: 1.5rem;
    line-height: 1.6;
    flex-grow: 1;
    text-align: justify;
}

.research-link {
    color: #1e3a8a;
    text-decoration: none;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: gap 0.3s ease;
}

.research-link:hover {
    gap: 1rem;
}

/* 团队成员 */
.team-section {
    padding: 100px 0;
    background: #f8fafc;
}

.team-category {
    margin-bottom: 60px;
}

.team-category h3 {
    font-size: 1.8rem;
    color: #1e3a8a;
    margin-bottom: 30px;
    text-align: center;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.team-grid-phd {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}

.team-card, .pi-card {
    background: #fff;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    padding: 30px;
    text-align: center;
}
.team-card:hover, .pi-card:hover {
    transform: scale(1.035);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.team-avatar {
    width: 190px;
    height: 240px;
    border-radius: 16px;
    border: none !important;
    box-shadow: none !important;
    background: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    margin: 0 auto 1.5rem;
}

.team-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 0;
}

.team-card h4 {
    font-size: 1.3rem;
    color: #1e3a8a;
    margin-bottom: 0.5rem;
}

.team-title {
    color: #000;
    font-weight: 500;
    margin-bottom: 1rem;
}

.team-bio {
    color: #000;
    margin-bottom: 1rem;
    line-height: 1.6;
}

.team-tags {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.team-tags span {
    background: #e0e7ff;
    color: #1e3a8a;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

.team-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

.team-links a {
    color: #6b7280;
    font-size: 1.2rem;
    transition: color 0.3s ease;
}

.team-links a:hover {
    color: #1e3a8a;
}

/* 重要成果 */
.achievements-section {
    padding: 100px 0;
}

.achievements-timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

/* 删除重要成果区域的中轴线样式 */
.achievements-timeline:before {
    display: none !important;
}

.achievement-item {
    display: flex;
    align-items: center;
    margin-bottom: 50px;
    position: relative;
}

.achievement-item:nth-child(odd) {
    flex-direction: row;
}

.achievement-item:nth-child(even) {
    flex-direction: row-reverse;
}

.achievement-icon {
    width: 60px;
    height: 60px;
    background: #1e3a8a;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    z-index: 2;
    position: relative;
}

.achievement-content {
    background: white;
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    margin: 0 30px;
    flex: 1;
    transition: transform 0.3s ease;
}

.achievement-content:hover {
    transform: translateY(-5px);
}

.achievement-content h3 {
    color: #1e3a8a;
    margin-bottom: 1rem;
}

.achievement-content p {
    color: #000;
    margin-bottom: 1rem;
}

.achievement-date {
    color: #9ca3af;
    font-size: 0.9rem;
    display: block;
    margin-bottom: 1rem;
}

.achievement-link {
    color: #1e3a8a;
    text-decoration: none;
    font-weight: 600;
}

.achievement-link:hover {
    text-decoration: underline;
}

/* 新闻动态 */
.news-section {
    padding: 100px 0;
    background: #f8fafc;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.news-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.news-date {
    background: #1e3a8a;
    color: white;
    padding: 20px;
    text-align: center;
    min-width: 100px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.news-date .day {
    font-size: 2rem;
    font-weight: 700;
    display: block;
}

.news-date .month {
    font-size: 0.9rem;
    opacity: 0.8;
}

.news-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 20px;
}

.news-content h3 {
    margin-bottom: 0.5rem;
    color: #1e3a8a;
}

.news-content p {
    margin-bottom: 1rem;
    color: #6b7280;
    flex: 1;
}

.news-link {
    color: #1e3a8a;
    text-decoration: none;
    font-weight: 600;
    align-self: flex-end;
}

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

.news-more {
    text-align: center;
}

.more-button {
    display: inline-block;
    padding: 15px 30px;
    background: #1e3a8a;
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.more-button:hover {
    background: #1e40af;
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(30, 58, 138, 0.3);
}

/* 合作伙伴 */
.partners-section {
    padding: 100px 0;
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    align-items: center;
}

.partner-logo {
    text-align: center;
    padding: 30px;
    background: white;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.partner-logo:hover {
    transform: translateY(-5px);
}

.partner-logo i {
    font-size: 3rem;
    color: #1e3a8a;
    margin-bottom: 1rem;
    display: block;
}

.partner-logo span {
    color: #000;
    font-weight: 600;
}

/* 页脚 */
.footer {
    background-image: linear-gradient(rgba(30, 58, 138, 0.8), rgba(30, 58, 138, 0.8)), url('cityu.jpg');
    background-size: cover;
    background-position: center 75%;
    color: white;
    padding: 20px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 20px;
    justify-content: space-between;
    margin-left: auto;
    margin-right: -50px;
    max-width: 1600px;
}

.footer-section h3 {
    margin-bottom: 1.5rem;
    font-size: 1.3rem;
}

.footer-section p {
    margin-bottom: 0.8rem;
    opacity: 0.9;
}

.footer-section p:nth-child(2) {
    margin-top: 10px;
}

.footer-section i {
    margin-right: 0.5rem;
    color: white;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.8rem;
}

.footer-section ul li a {
    color: white;
    text-decoration: none;
    opacity: 0.9;
    transition: opacity 0.3s ease;
}

.footer-section ul li a:hover {
    opacity: 1;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: background 0.3s ease;
}

.social-links a:hover {
    background: #f59e0b;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.8;
}

/* 动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: transparent;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        padding: 1rem 0;
        z-index: 999;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-logo {
        margin-left: 0;
        font-size: 1.3rem;
    }

    .nav-logo i {
        font-size: 1.5rem;
    }

    .hero-title {
        font-size: 2.2rem;
        padding: 0 15px;
    }

    .hero-subtitle {
        font-size: 1rem;
        padding: 0 15px;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 30px;
        margin-bottom: 40px;
    }

    .about-image {
        justify-content: center;
        min-width: auto;
    }

    .about-content h2 {
        font-size: 1.8rem;
        text-align: center;
    }

    .about-content p {
        font-size: 1rem;
        text-align: justify;
        padding: 0 10px;
    }

    .section-title {
        font-size: 1.8rem;
        margin-bottom: 40px;
    }

    .research-images {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 15px;
    }

    .research-images img {
        width: 280px !important;
        height: auto !important;
        margin: 5px !important;
        max-width: 100% !important;
    }

    .achievements-timeline::before {
        left: 30px;
    }

    .achievement-item {
        flex-direction: row !important;
    }

    .achievement-content {
        margin-left: 60px;
        margin-right: 0;
        padding: 20px;
    }

    .news-card {
        flex-direction: column;
    }

    .news-date {
        min-width: auto;
        flex-direction: row;
        gap: 1rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
        margin-left: 0;
        margin-right: 0;
    }

    .team-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 20px;
    }

    .team-grid-phd {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }

    .team-card, .pi-card {
        padding: 20px;
        min-width: auto;
        max-width: none;
    }

    .team-avatar {
        width: 150px;
        height: 200px;
    }

    .stats-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .stat-card {
        padding: 30px 20px;
    }

    .research-card {
        padding: 25px 20px;
    }

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

    .partner-logo {
        padding: 20px;
    }
}

@media (max-width: 900px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    .about-image {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 10px;
    }

    .nav-container {
        padding: 0 15px;
    }

    .hero-title {
        font-size: 1.8rem;
        padding: 0 10px;
    }

    .hero-subtitle {
        font-size: 0.9rem;
        padding: 0 10px;
    }

    .cta-button {
        padding: 10px 20px;
        font-size: 0.9rem;
    }

    .about-section {
        padding: 100px 0 60px 0;
    }

    .about-content h2 {
        font-size: 1.6rem;
        text-align: center;
    }

    .about-content p {
        font-size: 0.95rem;
        padding: 0 5px;
    }

    .section-title {
        font-size: 1.6rem;
        margin-bottom: 30px;
    }

    .research-images {
        gap: 10px;
    }

    .research-images img {
        width: 250px !important;
        height: auto !important;
        margin: 3px !important;
    }

    .stat-card {
        padding: 25px 15px;
    }

    .stat-card h3 {
        font-size: 2rem;
    }

    .research-card {
        padding: 20px 15px;
    }

    .team-card {
        padding: 15px;
        min-width: auto;
        max-width: none;
    }

    .team-grid-phd {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .team-avatar {
        width: 120px;
        height: 160px;
    }

    .pi-card {
        font-size: 1rem;
    }
    .pi-card .team-avatar {
        width: 200px !important;
        height: 260px !important;
        min-width: 200px !important;
        min-height: 260px !important;
    }
    .pi-card .team-bio {
        text-align: justify;
        font-size: 0.9rem;
    }

    .achievement-content {
        padding: 15px;
        margin-left: 40px;
        font-size: 0.9rem;
    }

    .achievement-icon {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }

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

    .news-content {
        padding: 15px;
    }

    .news-content h3 {
        font-size: 1rem;
    }

    .news-content p {
        font-size: 0.9rem;
    }

    .partners-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .partner-logo {
        padding: 15px;
    }

    .partner-logo i {
        font-size: 2.5rem;
    }

    .footer-content {
        padding: 0 10px;
    }

    .footer-section p {
        font-size: 0.9rem;
    }
}

/* 移动端图片优化 */
@media (max-width: 768px) {
    .about-carousel-alt.fade-mode {
        width: 90vw;
        height: 60vw;
        max-width: 350px;
        max-height: 250px;
    }

    .carousel-dots-alt {
        bottom: 8px;
        gap: 8px;
    }

    .carousel-dot {
        width: 8px;
        height: 8px;
    }
}

@media (max-width: 480px) {
    .about-carousel-alt.fade-mode {
        width: 85vw;
        height: 65vw;
        max-width: 280px;
        max-height: 200px;
    }

    .carousel-dots-alt {
        bottom: 6px;
        gap: 6px;
    }

    .carousel-dot {
        width: 6px;
        height: 6px;
    }
}

/* 移动端导航优化 */
@media (max-width: 768px) {
    .nav-menu li {
        margin: 10px 0;
    }

    .nav-link {
        font-size: 1.1rem;
        padding: 10px 0;
        color: #1e3a8a !important;
        font-weight: 600;
        text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    }

    .dropdown-menu {
        position: static;
        background: transparent;
        box-shadow: none;
        opacity: 1;
        visibility: visible;
        transform: none;
        padding: 0;
        margin-top: 10px;
    }

    .dropdown-menu a {
        color: #6b7280;
        padding: 5px 0;
        font-size: 0.9rem;
    }
}

/* 移动端间距优化 */
@media (max-width: 768px) {
    .about-section {
        padding: 120px 0 80px 0;
    }

    .research-section {
        padding: 80px 0;
    }

    .team-section {
        padding: 80px 0;
    }

    .achievements-section {
        padding: 80px 0;
    }

    .news-section {
        padding: 80px 0;
    }

    .partners-section {
        padding: 80px 0;
    }
}

@media (max-width: 480px) {
    .about-section {
        padding: 100px 0 60px 0;
    }

    .research-section {
        padding: 60px 0;
    }

    .team-section {
        padding: 60px 0;
    }

    .achievements-section {
        padding: 60px 0;
    }

    .news-section {
        padding: 60px 0;
    }

    .partners-section {
        padding: 60px 0;
    }
}

.achievements-timeline pre {
    width: 100vw;
    max-width: none;
    margin-left: calc(-1 * ((100vw - 100%) / 2));
    margin-right: 0;
    display: block;
    box-sizing: border-box;
    padding-left: 0;
    padding-right: 0;
}

/* 移动端图片优化 */
@media (max-width: 768px) {
    .research-images {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 15px;
    }

    .research-images img {
        width: 280px !important;
        height: auto !important;
        margin: 5px !important;
    }

    .team-grid-phd {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }

    .team-avatar {
        width: 150px;
        height: 200px;
    }
}

@media (max-width: 480px) {
    .research-images img {
        width: 250px !important;
        height: auto !important;
        margin: 3px !important;
        max-width: 100% !important;
    }

    .team-grid-phd {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .team-avatar {
        width: 120px;
        height: 160px;
    }
}

/* 确保所有图片在移动端都有合适的尺寸 */
@media (max-width: 768px) {
    img {
        max-width: 100%;
        height: auto;
    }
    
    .team-avatar img {
        object-fit: cover;
        width: 100%;
        height: 100%;
    }
    
    .about-image img {
        max-width: 100%;
        height: auto;
    }
}

/* 移动端触摸优化 */
@media (max-width: 768px) {
    .nav-link, .cta-button, .more-button, .research-link, .news-link, .achievement-link {
        min-height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .team-card, .research-card, .stat-card, .news-card, .partner-logo {
        cursor: pointer;
        -webkit-tap-highlight-color: transparent;
    }
    
    /* Principal Investigator mobile layout */
    .team-detail-card > div {
        flex-direction: column !important;
        gap: 20px !important;
        padding: 20px !important;
    }
    
    .team-detail-card .team-detail-avatar {
        width: 200px !important;
        height: 260px !important;
        min-width: auto !important;
        min-height: auto !important;
        order: 2 !important;
    }
    
    .team-detail-card > div > div:last-child {
        text-align: center !important;
        order: 1 !important;
    }
} 

/* 移动端优化增强 */
@media (max-width: 768px) {
    /* 导航栏优化 */
    .nav-menu li {
        margin: 10px 0;
    }

    .nav-link {
        font-size: 1.1rem;
        padding: 10px 0;
        color: #1e3a8a !important;
        font-weight: 600;
        text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    }

    .dropdown-menu {
        position: static;
        background: transparent;
        box-shadow: none;
        opacity: 1;
        visibility: visible;
        transform: none;
        padding: 0;
        margin-top: 10px;
    }

    .dropdown-menu a {
        color: #6b7280;
        padding: 5px 0;
        font-size: 0.9rem;
    }

    /* 图片优化 */
    .research-images {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 15px;
    }

    .research-images img {
        width: 280px !important;
        height: auto !important;
        margin: 5px !important;
        border-radius: 8px;
        box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    }

    /* 团队成员卡片优化 */
    .team-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 20px;
    }

    .team-grid-phd {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }

    .team-card, .pi-card {
        padding: 20px;
        min-width: auto;
        max-width: none;
    }

    .team-avatar {
        width: 150px;
        height: 200px;
    }

    /* 统计卡片优化 */
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .stat-card {
        padding: 30px 20px;
    }

    /* 研究方向卡片优化 */
    .research-card {
        padding: 25px 20px;
    }

    /* 合作伙伴优化 */
    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .partner-logo {
        padding: 20px;
    }

    /* 间距优化 */
    .about-section {
        padding: 120px 0 80px 0;
    }

    .research-section {
        padding: 80px 0;
    }

    .team-section {
        padding: 80px 0;
    }

    .achievements-section {
        padding: 80px 0;
    }

    .news-section {
        padding: 80px 0;
    }

    .partners-section {
        padding: 80px 0;
    }
}

@media (max-width: 480px) {
    /* 超小屏幕优化 */
    .container {
        padding: 0 10px;
    }

    .nav-container {
        padding: 0 15px;
    }

    .hero-title {
        font-size: 1.8rem;
        padding: 0 10px;
    }

    .hero-subtitle {
        font-size: 0.9rem;
        padding: 0 10px;
    }

    .cta-button {
        padding: 10px 20px;
        font-size: 0.9rem;
    }

    /* 内容区域优化 */
    .about-section {
        padding: 100px 0 60px 0;
    }

    .about-content h2 {
        font-size: 1.6rem;
        text-align: center;
    }

    .about-content p {
        font-size: 0.95rem;
        padding: 0 5px;
    }

    .section-title {
        font-size: 1.6rem;
        margin-bottom: 30px;
    }

    /* 研究图片优化 */
    .research-images {
        gap: 10px;
    }

    .research-images img {
        width: 250px !important;
        height: auto !important;
        margin: 3px !important;
    }

    /* 统计卡片优化 */
    .stat-card {
        padding: 25px 15px;
    }

    .stat-card h3 {
        font-size: 2rem;
    }

    /* 研究方向卡片优化 */
    .research-card {
        padding: 20px 15px;
    }

    /* 团队成员卡片优化 */
    .team-card {
        padding: 15px;
        min-width: auto;
        max-width: none;
    }

    .team-grid-phd {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .team-avatar {
        width: 120px;
        height: 160px;
    }

    .pi-card {
        font-size: 1rem;
    }
    
    .pi-card .team-avatar {
        width: 200px !important;
        height: 260px !important;
        min-width: 200px !important;
        min-height: 260px !important;
    }
    
    .pi-card .team-bio {
        text-align: justify;
        font-size: 0.9rem;
    }

    /* 成果展示优化 */
    .achievement-content {
        padding: 15px;
        margin-left: 40px;
        font-size: 0.9rem;
    }

    .achievement-icon {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }

    /* 新闻卡片优化 */
    .news-card {
        margin-bottom: 20px;
    }

    .news-content {
        padding: 15px;
    }

    .news-content h3 {
        font-size: 1rem;
    }

    .news-content p {
        font-size: 0.9rem;
    }

    /* 合作伙伴优化 */
    .partners-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .partner-logo {
        padding: 15px;
    }

    .partner-logo i {
        font-size: 2.5rem;
    }

    /* 页脚优化 */
    .footer-content {
        padding: 0 10px;
    }

    .footer-section p {
        font-size: 0.9rem;
    }

    /* 间距优化 */
    .about-section {
        padding: 100px 0 60px 0;
    }

    .research-section {
        padding: 60px 0;
    }

    .team-section {
        padding: 60px 0;
    }

    .achievements-section {
        padding: 60px 0;
    }

    .news-section {
        padding: 60px 0;
    }

    .partners-section {
        padding: 60px 0;
    }
}

/* 移动端图片轮播优化 */
@media (max-width: 768px) {
    .about-carousel-alt.fade-mode {
        width: 90vw;
        height: 60vw;
        max-width: 350px;
        max-height: 250px;
    }

    .carousel-dots-alt {
        bottom: 8px;
        gap: 8px;
    }

    .carousel-dot {
        width: 8px;
        height: 8px;
    }
}

@media (max-width: 480px) {
    .about-carousel-alt.fade-mode {
        width: 85vw;
        height: 65vw;
        max-width: 280px;
        max-height: 200px;
    }

    .carousel-dots-alt {
        bottom: 6px;
        gap: 6px;
    }

    .carousel-dot {
        width: 6px;
        height: 6px;
    }
}

/* 确保所有图片在移动端都有合适的尺寸 */
@media (max-width: 768px) {
    img {
        max-width: 100%;
        height: auto;
    }
    
    .team-avatar img {
        object-fit: cover;
        width: 100%;
        height: 100%;
    }
    
    .about-image img {
        max-width: 100%;
        height: auto;
    }
}

/* 移动端触摸优化 */
@media (max-width: 768px) {
    .nav-link, .cta-button, .more-button, .research-link, .news-link, .achievement-link {
        min-height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .team-card, .research-card, .stat-card, .news-card, .partner-logo {
        cursor: pointer;
        -webkit-tap-highlight-color: transparent;
    }
}