body {
    font-family: 'Roboto';
    line-height: 1.5;
    margin: 0;
    padding-top: 85px;  /* 调整顶部内边距以匹配更小的header高度 */
    color: #333;
    background-color: #edeff1;
}

.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    overflow: hidden;
}

header {
    background: #133d47;
    color: #ffffff;
    padding: 10px 0;
    min-height: 40px;
    border-bottom: #133d47 0px solid;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    z-index: 1000;
}

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

.header-content {
    display: flex;
    align-items: center;
}

/* 亮点区块样式（已移出嵌套） */
.highlight {
    text-align: center;
    background: #b0b1b1;
    color: #222;
    border-radius: 10px;
    padding: 24px 18px;
    box-shadow: 0 0 10px rgba(0,0,0,0.06);
    width: 30%;
}

.highlight i {
    font-size: 2em;
    color: #666;
    margin-bottom: 10px;
}

.highlight h3 {
    margin: 10px 0;
    color: #222;
    font-size: 1.5em;
    font-weight: 600;
}

.highlight p {
    color: #444;
}

.school-logo {
    height: 65px !important;
    width: 65px !important;
    object-fit: contain;
    margin-right: 15px;
    display: block;
}

.header-logo {
    height: 63px;
    width: auto;
    margin-right: 15px;
    display: block;
}

header nav {
    display: flex;
    align-items: center;
}

header nav ul {
    margin: 0;
    padding: 0;
    list-style: none;
    display: flex;
    align-items: center;
}

header nav ul li {
    margin-left: 35px;
    position: relative;
}


/* 当前页面导航项的悬停效果（增强版） */
.index header nav ul li a[href="index.html"]:hover,
.about header nav ul li a[href="about.html"]:hover,
.team header nav ul li a[href="team.html"]:hover,
.research-achievements header nav ul li a[href="research_achievements.html"]:hover,
.news header nav ul li a[href="news.html"]:hover,
.recruitment header nav ul li a[href="recruitment.html"]:hover {
    background-color: rgba(255, 238, 0, 0.25);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(255, 238, 0, 0.4);
    border-color: rgb(255, 200, 0);
    color: #ffffff;
}

/* 当前页面导航项悬停时下划线效果增强 */
.index header nav ul li a[href="index.html"]:hover::after,
.about header nav ul li a[href="about.html"]:hover::after,
.team header nav ul li a[href="team.html"]:hover::after,
.research-achievements header nav ul li a[href="research_achievements.html"]:hover::after,
.news header nav ul li a[href="news.html"]:hover::after,
.recruitment header nav ul li a[href="recruitment.html"]:hover::after {
    width: 100%;
    height: 4px;
    box-shadow: 0 3px 6px rgba(255, 238, 0, 0.6);
    background: linear-gradient(to right, rgb(255, 238, 0), rgb(255, 180, 0));
}

/* 非当前页面的导航项基础样式 */
header nav ul li a {
    color: #ffffff;
    text-decoration: none;
    font-size: 1.2em;
    letter-spacing: 0.5px;
    padding: 6px 8px;
    display: block;
    position: relative;
    white-space: nowrap;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    border-radius: 4px;
}

/* 非当前页面导航项的悬停效果 */
header nav ul li a:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(255, 255, 255, 0.2);
    color: #ffffff;
}

/* 非当前页面导航项悬停时的下划线效果 */
header nav ul li a:hover::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 2px;
    background: rgba(255, 255, 255, 0.6);
    border-radius: 1px;
    transition: all 0.3s ease;
}

.section {
    width: 100%;
    max-width: 1400px;
    margin: 20px auto;
    padding: 10px 20px 40px 20px;
    background: #F2F2F2;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    border-radius: 10px;
}

/* 统一的标题样式 */
.section-title, 
.slide-content h2 {
    font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
    font-size: 3rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 1rem;
    padding-bottom: 0.75rem;
    position: relative;
    text-align: center;
    letter-spacing: 1px;
}

/* 标题下划线装饰 */
.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: linear-gradient(to right, #3498db, #2980b9);
    border-radius: 3px;
}

/* 轮播图标题特殊样式（因为在深色背景上） */
.slide-content h2 {
    color: #ffffff !important;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    margin-bottom: 1rem;
    padding-bottom: 0;
}

.slide-content h2::after {
    display: none;
}

/* 确保所有区块标题的容器有足够的上下间距 */
section {
    padding: 3rem 0;
}

.team-members {
    width: 100%;
    max-width: 1400px;
    margin: 20px auto;
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 0px;
}

/* 成员卡片样式优化 */
.member {
    text-align: center;
    background: #ffffff;
    padding: 20px;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    width: 200px;
    margin: 15px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.member:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.12);
}

.member img {
    width: 160px;
    height: 200px;
    object-fit: cover;
    border-radius: 10px;
    margin-bottom: 15px;
    transition: transform 0.3s ease;
}

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

.member h4 {
    color: #2c3e50;
    font-size: 1.3em;
    margin: 10px 0 5px;
    font-weight: 600;
}

.member p {
    color: #666;
    font-size: 0.95em;
    margin: 5px 0;
    line-height: 1.4;
}

/* 研究方向样式 */
.research-direction {
    background: #f0f8ff;
    border-left: 3px solid #1e88e5;
    padding: 8px 10px;
    margin-top: 10px;
    text-align: left;
    font-size: 0.9em;
    color: #333;
    line-height: 1.5;
    border-radius: 0 4px 4px 0;
}

.research-direction i {
    color: #1e88e5;
    margin-right: 5px;
}

/* 成员类别标题样式优化 */
.member-category {
    margin-top: 20px;
    margin-bottom: 20px;
    position: relative;
}

.member-category h3 {
    color: #2c3e50;
    font-size: 1.8em;
    margin-bottom: 10px;
    padding-bottom: 10px;
    position: relative;
    display: inline-block;
}

.member-category h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(to right, #1e88e5, #4caf50);
    border-radius: 1.5px;
}

/* 已毕业生额外样式 */
.member .destination {
    color: #6c9bcf;
    font-size: 0.9em;
    margin-top: 5px;
    font-style: italic;
}

/* 导师板块特殊样式 */
.mentor-container {
    margin: 30px 0;
}

.mentor-row {
    display: flex;
    align-items: flex-start;
    background: #ffffff;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
    margin: 20px 0;
    transition: all 0.3s ease;
}

.mentor-row:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 25px rgba(0, 0, 0, 0.15);
}

.mentor-photo {
    flex: 0 0 auto;
    margin-right: 40px;
}

.mentor-photo img {
    width: 220px;
    height: 280px;
    object-fit: cover;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.mentor-row:hover .mentor-photo img {
    transform: scale(1.02);
}

.mentor-info {
    flex: 1;
    padding-top: 10px;
}

.mentor-info h4 {
    color: #2c3e50;
    font-size: 1.8em;
    margin: 0 0 20px 0;
    position: relative;
    padding-bottom: 15px;
    display: inline-block;
}

.mentor-info h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background: linear-gradient(to right, #1e88e5, #4caf50);
    border-radius: 1.5px;
}

.mentor-info h4 a {
    color: #2c3e50;
    text-decoration: none;
    transition: color 0.3s ease;
}

.mentor-info h4 a:hover {
    color: #1e88e5;
}

.mentor-info p {
    color: #555;
    font-size: 1.1em;
    line-height: 1.8;
    margin: 0;
    text-align: justify;
}

/* 响应式调整 */
@media (max-width: 992px) {
    .mentor-row {
        flex-direction: column;
        align-items: center;
        padding: 30px;
    }
    
    .mentor-photo {
        margin-right: 0;
        margin-bottom: 30px;
    }
    
    .mentor-info h4 {
        text-align: center;
        margin: 0 auto 20px;
        display: block;
    }
    
    .mentor-info h4::after {
        left: 50%;
        transform: translateX(-50%);
    }
}

.highlights {
    display: flex;
    justify-content: space-around;
    margin-top: 30px;
}

.news {
    /* margin-top: 40px; 移除这个属性 */
}

.news-item {
    background: #F2F2F2;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 20px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

.news-item h3 {
    color: #2c3e50; /* 深蓝色，与浅灰色背景形成对比 */
    font-size: 1.5em; /* 增大字体 */
    font-weight: 600; /* 加粗字体 */
}

.news-item p {
    color: #666;
}

footer {
    background: #133d47;
    color: #fff;
    margin-top: 10px;
}

.footer-top {
    padding: 40px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 30px;
}

.footer-logo {
    flex: 1;
    min-width: 300px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.logo-wrapper {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    margin-bottom: 15px;
}

.logo-container {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
}

.logo-divider {
    height: 40px;
    width: 1px;
    background-color: rgba(255, 255, 255, 0.3);
    margin: 0 15px;
}

.school-logo-footer,
.rsit-logo-footer {
    height: 60px;
    width: auto;
    object-fit: contain;
}

.team-name {
    color: #fff;
    font-size: 1.5em;
    margin: 0;
    font-weight: 600;
    letter-spacing: 1px;
}

.team-slogan {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95em;
    margin: 0;
    line-height: 1.6;
    max-width: 300px;
}

.footer-contact {
    flex: 1;
    min-width: 250px;
}

.footer-contact h3 {
    color: #fff;
    font-size: 1.4em;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
    font-weight: 600;
}

.footer-contact h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 2px;
    background: #1e88e5;
}

.footer-contact p {
    color: rgba(255, 255, 255, 0.8);
    margin: 15px 0;
    display: flex;
    align-items: center;
    gap: 15px;
}

.footer-contact i {
    color: #1e88e5;
    font-size: 1.2em;
    width: 20px;
    text-align: center;
}

.footer-links {
    flex: 1;
    min-width: 250px;
}

.footer-links h3 {
    color: #fff;
    font-size: 1.4em;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
    font-weight: 600;
}

.footer-links h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 2px;
    background: #1e88e5;
}

.footer-links ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links ul li {
    margin: 10px 0;
}

.footer-links ul li a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s ease;
    display: block;
    padding: 5px 0;
}

.footer-links ul li a:hover {
    color: #1e88e5;
}

.footer-bottom {
    padding: 10px 0;
    text-align: center;
}

.copyright {
    color: rgba(255, 255, 255, 0.6);
    margin: 0;
    font-size: 0.9em;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .footer-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .footer-logo, .footer-contact, .footer-links {
        width: 100%;
        align-items: center;
    }
    
    .logo-container {
        justify-content: center;
    }
    
    .logo-wrapper {
        align-items: center;
    }
    
    .team-slogan {
        text-align: center;
        max-width: 100%;
    }
    
    .school-logo-footer,
    .rsit-logo-footer {
        height: 50px;
    }
    
    .footer-contact h3::after,
    .footer-links h3::after {
        left: 50%;
        transform: translateX(-50%);
    }
    
    .footer-contact p {
        justify-content: center;
    }
}

/* 轮播图样式 - 重新设计背景 */
.slider-section {
    position: relative;
    width: 100%;
    padding: 10px 0;
    background: linear-gradient(135deg, #a2f9ff 0%, #f6caff 50%, #fdf7d4 100%);  /* 渐变背景 */
    overflow: hidden;
}

/* 添加动态背景效果 */
.slider-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(215, 214, 233, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(231, 215, 226, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 40% 40%, rgba(120, 219, 255, 0.2) 0%, transparent 50%);
    animation: backgroundShift 8s ease-in-out infinite;
}

/* 添加浮动粒子效果 */
.slider-section::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 25% 25%, rgba(255, 255, 255, 0.1) 1px, transparent 1px),
        radial-gradient(circle at 75% 75%, rgba(255, 255, 255, 0.1) 1px, transparent 1px);
    background-size: 50px 50px, 30px 30px;
    background-position: 0 0, 25px 25px;
    animation: particleFloat 20s linear infinite;
}

@keyframes backgroundShift {
    0%, 100% {
        opacity: 0.7;
        transform: scale(1);
    }
    50% {
        opacity: 1;
        transform: scale(1.05);
    }
}

@keyframes particleFloat {
    0% {
        transform: translateY(0px) rotate(0deg);
    }
    100% {
        transform: translateY(-100px) rotate(360deg);
    }
}

.slider-container {
    position: relative;
    width: 95%;
    max-width: 1400px;
    margin: 0 auto;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 
        0 20px 60px rgba(0, 0, 0, 0.3),
        0 0 0 1px rgba(255, 255, 255, 0.1);  /* 添加边框光效 */
    aspect-ratio: 21/9;
    background: #000;
    position: relative;
    z-index: 2;
}

/* 为轮播图容器添加光晕效果 */
.slider-container::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, #667eea, #764ba2, #f093fb, #667eea);
    border-radius: 22px;
    z-index: -1;
    opacity: 0.3;
    animation: borderGlow 4s ease-in-out infinite;
}

@keyframes borderGlow {
    0%, 100% {
        opacity: 0.3;
    }
    50% {
        opacity: 0.6;
    }
}

.slider {
    position: relative;
    width: 100%;
    height: 100%;
}

.slide {
    position: absolute;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    transform: scale(1.05);
}

.slide.active {
    opacity: 1;
    transform: scale(1);
}

.slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.85) contrast(1.1) saturate(1.1);
}

.slide-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 50px 40px 30px;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.85));
    color: white;
    text-align: center;
    transform: translateY(100%);
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.slide.active .slide-content {
    transform: translateY(0);
}

.slide-content h2 {
    font-size: 2.2em;
    font-weight: 700;
    margin-bottom: 12px;
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.8);
    letter-spacing: 1px;
}

.slide-content p {
    font-size: 1.2em;
    margin: 0;
    text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.8);
    opacity: 0.95;
    line-height: 1.5;
    max-width: 700px;
    margin: 0 auto;
}

/* 轮播图导航按钮 - 调整箭头位置向中间移动 */
.slider-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 100%;  /* 改回100%，让箭头在图片区域内 */
    z-index: 10;
    pointer-events: none;
    left: 0;
    right: 0;
}

.slider-nav button {
    position: absolute;
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.4);
    width: 65px;
    height: 65px;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: auto;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.25);
}

.slider-nav button:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.7);
    transform: scale(1.15);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.35);
}

.slider-nav .prev {
    left: 40px;  /* 向中间移动，距离左边缘40px */
}

.slider-nav .next {
    right: 40px;  /* 向中间移动，距离右边缘40px */
}

.slider-nav i {
    color: white;
    font-size: 28px;
    text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.6);
    font-weight: 600;
}

/* 响应式调整 - 确保箭头在图片区域内完全显示 */
@media (max-width: 1400px) {
    .slider-nav .prev {
        left: 35px;
    }
    
    .slider-nav .next {
        right: 35px;
    }
    
    .slider-nav button {
        width: 60px;
        height: 60px;
    }
    
    .slider-nav i {
        font-size: 26px;
    }
}

@media (max-width: 1200px) {
    .slider-nav .prev {
        left: 30px;
    }
    
    .slider-nav .next {
        right: 30px;
    }
    
    .slider-nav button {
        width: 55px;
        height: 55px;
    }
    
    .slider-nav i {
        font-size: 24px;
    }
}

@media (max-width: 768px) {
    .slider-nav .prev {
        left: 20px;
    }
    
    .slider-nav .next {
        right: 20px;
    }
    
    .slider-nav button {
        width: 50px;
        height: 50px;
    }
    
    .slider-nav i {
        font-size: 22px;
    }
}

@media (max-width: 480px) {
    .slider-nav .prev {
        left: 15px;
    }
    
    .slider-nav .next {
        right: 15px;
    }
    
    .slider-nav button {
        width: 45px;
        height: 45px;
    }
    
    .slider-nav i {
        font-size: 20px;
    }
}

/* 轮播图指示器 - 优化样式 */
.slider-indicators {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}

.slider-indicators button {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.6);
    background: transparent;
    cursor: pointer;
    padding: 0;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.slider-indicators button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 0;
    height: 0;
    background: white;
    border-radius: 50%;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.slider-indicators button.active {
    border-color: white;
    transform: scale(1.2);
}

.slider-indicators button.active::before {
    width: 4px;
    height: 4px;
}

/* 研究成果页面样式 */
.achievement-category {
    margin-bottom: 40px;
    background: #F2F2F2;
    padding: 5px;
    border-radius: 10px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.achievement-category h3 {
    color: #2c3e50;
    font-size: 1.6em;
    margin-bottom: 15px;
    border-bottom: 2px solid #6c9bcf;
    padding-bottom: 10px;
}

.achievement-category h3 i {
    margin-right: 10px;
    color: #6c9bcf;
}

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

.achievement-item {
    background: #F2F2F2;
    padding: 5px;
    border-radius: 8px;
    transition: transform 0.3s ease;
}

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

.achievement-item h4 {
    color: #2c3e50;
    font-size: 1.3em;
    margin-bottom: 5px
}

.achievement-item p {
    color: #666;
    margin-bottom: 5px;
}

.achievement-date {
    color: #6c9bcf !important;
    font-weight: bold;
    font-size: 0.9em;
}

.achievement-details {
    list-style: none;
    padding-left: 0;
    margin-top: 10px;
}

.achievement-details li {
    color: #666;
    margin-bottom: 5px;
    padding-left: 20px;
    position: relative;
}

.achievement-details li:before {
    content: "•";
    color: #6c9bcf;
    position: absolute;
    left: 0;
    font-weight: bold;
}

/* 研究方向样式 */
.research-directions {
    padding-top: 22px !important;
    margin-top: 2 !important;
    width: 100%;
    background: #fff;
}

.research-directions .container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 
  这个旧的规则优先级较低，可能会引起混淆，建议删除或注释掉
.research-directions h2 {
    text-align: center;
    color: #2c3e50;
    font-size: 2.5em;
    margin-bottom: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
} 
*/

.word-cloud {
    width: 100%;
    margin: 20px auto 0; /* 减小上边距 */
    padding: 60px;
    background: #fdf6f6;
    border-radius: 30px;
    box-shadow: 0 10px 10px rgba(0, 0, 0, 0.05);
    min-height: 550px;
    position: relative;
    overflow: hidden;
}

.word {
    position: absolute;
    padding: 10px 15px;  /* 增加内边距 */
    border-radius: 6px;
    transition: all 0.3s ease;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.9);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    text-align: center;
    line-height: 1.2;
    transform-origin: center;
    max-width: calc(100% - 160px);  /* 增加最大宽度限制 */
}

/* 随机分布的词云位置 */
.word:nth-child(1) { top: 40%; left: 33%; } 
.word:nth-child(2) { top: 21%; left: 26%; } 
.word:nth-child(3) { top: 73%; left: 28%; } 
.word:nth-child(4) { top: 16%; left: 52%; } 
.word:nth-child(5) { top: 59%; left: 18%; }  
.word:nth-child(6) { top: 12%; left: 67%; }  
.word:nth-child(7) { top: 75%; left: 46%; } 
.word:nth-child(8) { top: 30%; left: 13%; } 
.word:nth-child(9) { top: 67%; left: 54%; }  
.word:nth-child(10) { top: 32%; left: 75%; } 
.word:nth-child(11) { top: 79%; left: 61%; } 
.word:nth-child(12) { top: 42%; left: 21%; } 
.word:nth-child(13) { top: 88%; left: 33%; } 
.word:nth-child(14) { top: 8%; left: 41%; } 
.word:nth-child(15) { top: 52%; left: 63%; }
.word:nth-child(16) { top: 91%; left: 47%; }
.word:nth-child(17) { top: 28%; left: 58%; } 
.word:nth-child(18) { top: 63%; left: 42%; }
.word:nth-child(19) { top: 37%; left: 62%; } 
.word:nth-child(20) { top: 10%; left: 24%; }
.word:nth-child(21) { top: 48%; left: 12%; }
.word:nth-child(22) { top: 82%; left: 19%; } 
.word:nth-child(23) { top: 24%; left: 40%; }
.word:nth-child(24) { top: 55%; left: 32%; }
.word:nth-child(25) { top: 71%; left: 69%; }
.word:nth-child(26) { top: 65%; left: 32%; }

/* 调整hover效果，确保不会与其他词重叠 */
.word:hover {
    transform: scale(1.08);
    background: #ffffff;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
    z-index: 10;
}

.weight-20 { 
    font-size: 3em; 
    font-weight: 700; 
    color: #2c3e50;
    background: linear-gradient(135deg, #ffffff, #f8f9fa);
    z-index: 5;
}

.weight-19 { 
    font-size: 2.5em; 
    font-weight: 700; 
    color: #3498db;
    background: linear-gradient(135deg, #ffffff, #e3f2fd);
    z-index: 4;
}

.weight-18 { 
    font-size: 2.3em; 
    font-weight: 600; 
    color: #e74c3c;
    background: linear-gradient(135deg, #ffffff, #ffebee);
    z-index: 4;
}

.weight-17 { 
    font-size: 2.1em; 
    font-weight: 600; 
    color: #9b59b6;
    background: linear-gradient(135deg, #ffffff, #f3e5f5);
    z-index: 3;
}

.weight-16 { 
    font-size: 1.9em; 
    font-weight: 500; 
    color: #16a085;
    background: linear-gradient(135deg, #ffffff, #e0f2f1);
    z-index: 3;
}

.weight-15 { 
    font-size: 1.7em; 
    font-weight: 500; 
    color: #f1c40f;
    background: linear-gradient(135deg, #ffffff, #fff3e0);
    z-index: 2;
}

.weight-14 { 
    font-size: 1.5em; 
    font-weight: 400; 
    color: #e67e22;
    background: linear-gradient(135deg, #ffffff, #fff3e0);
    z-index: 2;
}

.weight-13{ 
    font-size: 1.5em; 
    font-weight: 400; 
    color: #c7bc20;
    background: linear-gradient(135deg, #ffffff, #fff3e0);
    z-index: 2;
}

@media (max-width: 1200px) {
    .research-directions .container {
        max-width: 95%;
    }
    .word-cloud {
        width: 95%;
        min-height: 400px;
        padding: 25px;
    }
    .weight-20 { font-size: 2.4em; }
    .weight-19 { font-size: 2.2em; }
    .weight-18 { font-size: 2.0em; }
    .weight-17 { font-size: 1.8em; }
    .weight-16 { font-size: 1.6em; }
    .weight-15 { font-size: 1.4em; }
    .weight-14 { font-size: 1.2em; }
}

@media (max-width: 768px) {
    .research-directions .container {
        max-width: 100%;
        padding: 0 15px;
    }
    .word-cloud {
        width: 100%;
        min-height: 320px;
        padding: 20px;
    }
}

/* 最新成果板块样式 */
.latest-achievements {
    margin-top: 40px;
    background: #f8f9fa;
    padding: 40px 0;
    border-radius: 10px;
}

.achievement-grid {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 20px;
}

.achievement-card {
    background: #ffffff;
    padding: 10px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.achievement-card h3 {
    color: #2c3e50;
    font-size: 1.3em;
    margin-bottom: 10px;
}

.achievement-card p {
    color: #666;
    margin-bottom: 15px;
}

.achievement-card .date {
    color: #6c9bcf;
    font-size: 0.9em;
    font-weight: bold;
}

/* 新闻动态改进样式 */
.news-grid {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.news-card {
    background: #f8f9fa;
    border-left: 4px solid #4caf50;
    padding: 1.5rem;
    border-radius: 8px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.news-card:hover {
    transform: translateX(5px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.news-date {
    display: inline-block;
    background: #4caf50;
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
}

.news-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: #2c3e50;
    margin: 0.5rem 0;
    line-height: 1.4;
}

.news-content {
    color: #666;
    font-size: 0.95rem;
    margin: 0.5rem 0;
    line-height: 1.6;
}

.read-more {
    display: inline-block;
    color: #4caf50;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    margin-top: 0.5rem;
    transition: color 0.3s ease;
}

.read-more:hover {
    color: #388e3c;
}

/* 代表论文和近期动态容器 */
.content-columns {
    background: #fff;  /* 添加白色背景 */
    width: 100%;      /* 设置为全宽 */
    padding: 0rem 0;  /* 上下内边距 */
}

.content-columns > .container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.publications,
.news-section {
    flex: 1;
    min-width: 300px;
    padding: 1rem;
}

/* 代表论文样式 */
.publication-grid {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.publication-card {
    background: #f8f9fa;
    border-left: 4px solid #1e88e5;
    padding: 1.5rem;
    border-radius: 8px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.publication-card:hover {
    transform: translateX(5px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.pub-date {
    display: inline-block;
    background: #1e88e5;
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
}

.pub-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: #2c3e50;
    margin: 0.5rem 0;
    line-height: 1.4;
}

.pub-journal {
    color: #666;
    font-style: italic;
    margin: 0.25rem 0;
    font-size: 0.95rem;
}

.pub-authors {
    color: #555;
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

/* 近期动态样式 */
.news-grid {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.news-card {
    background: #f8f9fa;
    border-left: 4px solid #4caf50;
    padding: 1.5rem;
    border-radius: 8px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.news-card:hover {
    transform: translateX(5px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.news-date {
    display: inline-block;
    background: #4caf50;
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 4px;
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
}

.news-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: #2c3e50;
    margin: 0.5rem 0;
    line-height: 1.4;
}

.news-content {
    color: #666;
    font-size: 0.95rem;
    margin: 0.5rem 0;
    line-height: 1.6;
}

.read-more {
    display: inline-block;
    color: #4caf50;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    margin-top: 0.5rem;
    transition: color 0.3s ease;
}

.read-more:hover {
    color: #388e3c;
}

.section-title {
    color: #2c3e50;
    font-size: 3rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #eee;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 60px;
    height: 2px;
    background: #1e88e5;
}

.rsit-intro-list {
    font-size: 1.3em;         /* 字体更大 */
    line-height: 1.5;          /* 行高更紧凑 */
    color: #000000;            /* 深色更大气 */
    font-family: 'Roboto', 'Microsoft YaHei', Arial, sans-serif;
    margin: 24px 0 32px 32px;  /* 上下留白，左缩进 */
    font-weight: 400;
    letter-spacing: 0.8px;
}

.rsit-intro-list li {
    margin-bottom: 12px;
    padding-left: 4px;
}

h2 {
    font-size: 2em;
    font-weight: 700;
    color: #000000;
    letter-spacing: 1px;
    margin-bottom: 2px;
}

/* 滑入动画 */
@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translateY(-40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 首行缩进2em */
.indent {
    text-indent: 2em;
}

/* 为研究方向标题设置独立的、高优先级的样式 */
.research-directions .section-title {
    font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
    font-size: 2.6em !important;  /* 使用 !important 强制应用此样式 */
    font-weight: 800;
    color: #2c3e50;
    text-align: center;
    margin: 0 auto 2rem; /* 调整垂直间距以容纳大字体 */
    padding: 0 0 2rem 0; /* 调整垂直间距以容纳大字体 */
    position: relative;
    letter-spacing: 2px;
    line-height: 1.2;
}

/* 其他主要板块标题统一样式 */
.team-showcase .section-title,
.publications .section-title,
.news-section .section-title {
    font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
    font-size: 28px;
    font-weight: 600;
    color: #333333;
    text-align: center;
    margin: 0 0 2rem 0;
    padding: 0 0 1rem 0;
    position: relative;
    letter-spacing: 2px;
}

/* 主要板块标题装饰线 */
.research-directions .section-title::after,
.team-showcase .section-title::after,
.publications .section-title::after,
.news-section .section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: #1e88e5;
    border-radius: 1.5px;
}

/* 主要板块间距控制 */
.research-directions,
.team-showcase,
.content-columns {
    padding: 4rem 0;
    background: #ffffff;
}

/* 团队风采样式 */
.team-showcase {
    margin: 30px 0;
    padding: 20px 0;
}

.team-showcase h2 {
    text-align: center;
    color: #2c3e50;
    margin-bottom: 20px;
}

.showcase-grid {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    padding: 20px 0;
}

.showcase-item {
    position: relative;
    overflow: hidden;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(168, 164, 164, 0.1);
    aspect-ratio: 3/4;  /* 保持固定的宽高比 */
    width: 100%;        /* 填充网格单元 */
    max-width: 400px;   /* 增加最大宽度 */
    margin: 0 auto;     /* 居中显示 */
}

.showcase-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;  /* 保持图片比例，覆盖容器 */
}

.showcase-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8), rgba(0,0,0,0));
    padding: 20px;
    color: #fff;
}

/* 删除hover效果 */
.showcase-item:hover {
    /* 删除transform效果 */
}

.showcase-item:hover .showcase-overlay {
    /* 删除transform效果 */
}

.showcase-item:hover img {
    /* 删除transform效果 */
}

.showcase-overlay h3 {
    margin: 0 0 5px 0;
    font-size: 1.2em;
    font-weight: 600;
}

.showcase-overlay p {
    margin: 0;
    font-size: 0.9em;
    opacity: 0.9;
}

/* 团队风采响应式样式 */
@media (max-width: 1200px) {
    .showcase-grid {
        grid-template-columns: repeat(3, 1fr);  /* 三列 */
        gap: 25px;
    }

    .showcase-item {
        max-width: 300px;
    }
}

@media (max-width: 992px) {
    .showcase-grid {
        grid-template-columns: repeat(2, 1fr);  /* 两列 */
        gap: 20px;
    }

    .showcase-item {
        max-width: 280px;
    }
}

@media (max-width: 576px) {
    .showcase-grid {
        grid-template-columns: repeat(1, 1fr);  /* 单列 */
        gap: 15px;
    }

    .showcase-item {
        max-width: 260px;
    }
}

/* 响应式调整 */
@media (max-width: 1200px) {
    .content-columns > .container {
        max-width: 95%;
    }
}

@media (max-width: 768px) {
    .content-columns > .container {
        max-width: 100%;
        padding: 0 15px;
        flex-direction: column;
    }
    
    .publications,
    .news-section {
        width: 100%;
        margin-bottom: 2rem;
    }
}

/* 统一各部分容器宽度 */
.research-directions .container,
.team-showcase .container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 团队风采网格 */
.showcase-grid {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    padding: 20px 0;
}

/* 响应式调整 */
@media (max-width: 1200px) {
    .research-directions .container,
    .team-showcase .container {
        max-width: 95%;
    }
}

@media (max-width: 768px) {
    .research-directions .container,
    .team-showcase .container {
        max-width: 100%;
        padding: 0 15px;
    }
}

.publication-grid,
.news-grid {
    padding: 1rem 0;
}

/* 研究成果页面的高亮标记 */
.highlight-badge {
    display: inline-block;
    background-color: #e74c3c;
    color: white;
    font-size: 0.7em;
    padding: 3px 8px;
    border-radius: 12px;
    margin-left: 10px;
    vertical-align: middle;
    font-weight: 600;
    letter-spacing: 0.5px;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(231, 76, 60, 0.4);
    }
    70% {
        box-shadow: 0 0 0 8px rgba(231, 76, 60, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(231, 76, 60, 0);
    }
}

/* 修改研究成果项目样式 */
.research-achievements .achievement-item {
    transition: all 0.3s ease;
    border-radius: 8px;
    overflow: hidden;
}

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

.research-achievements .achievement-category h3 {
    font-size: 1.6em;
    margin-bottom: 5px;
    color: #2c3e50;
    position: relative;
    padding-bottom: 10px;
}

.research-achievements .achievement-category h3::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 80px;
    height: 3px;
    background: linear-gradient(to right, #6c9bcf, transparent);
}

.recruitment-section {
    padding-top: 0.2 !important;
    margin-top: 0 !important;
}.recruitment-section .section-title {
    margin-top: 0 !important;
    padding-top: 0!important;
}

/* 当前页面的导航项常亮标识 */
body.index header nav ul li a[href="index.html"],
body.about header nav ul li a[href="about.html"],
body.team header nav ul li a[href="team.html"],
body.research-achievements header nav ul li a[href="research_achievements.html"],
body.news header nav ul li a[href="news.html"],
body.recruitment header nav ul li a[href="recruitment.html"] {
    background: linear-gradient(90deg, #ffe066 0%, #ffd700 100%);
    color: #222 !important;
    font-weight: 900 !important;
    border-radius: 6px;
    box-shadow: 0 2px 12px rgba(255, 215, 0, 0.18);
    border: 2px solid #ffd700;
    padding: 8px 18px;
    text-shadow: 0 1px 0 #fffbe6;
    transition: all 0.2s;
    z-index: 2;
}

/* 统一四个主要页面的大标题样式 */
.team .section-title,
.research-achievements .section-title,
.news .section-title,
.recruitment .section-title {
    font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
    font-size: 2.8rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    position: relative;
    text-align: center;
    letter-spacing: 1.2px;
    text-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

/* 四个主要页面的大标题下划线装饰 */
.team .section-title::after,
.research-achievements .section-title::after,
.news .section-title::after,
.recruitment .section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: linear-gradient(to right, #3498db, #2980b9);
    border-radius: 2px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

/* 课题组介绍图片样式 */
.group-intro-image {
    width: 75%;
    margin: 40px auto 20px;
    border-radius: 10px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.group-intro-image img {
    width: 100%;
    display: block;
    transition: transform 0.6s ease;
}

.group-intro-image:hover {
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.25);
    transform: translateY(-5px);
}

.group-intro-image:hover img {
    transform: scale(1.02);
}

.group-intro-image::before, 
.group-intro-image::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 4px;
    background: linear-gradient(to right, #3498db, #2980b9);
    transition: all 0.4s ease;
}

.group-intro-image::before {
    top: 0;
    left: -100%;
    animation: slide-right 2s ease-in-out infinite alternate;
}

.group-intro-image::after {
    bottom: 0;
    right: -100%;
    animation: slide-left 2s ease-in-out infinite alternate;
}

@keyframes slide-right {
    0% { left: -100%; }
    100% { left: 0; }
}

@keyframes slide-left {
    0% { right: -100%; }
    100% { right: 0; }
}

@media (max-width: 768px) {
    .group-intro-image {
        margin-top: 25px;
        margin-bottom: 10px;
    }
}

/* 课题组介绍图片标题样式 */
.image-title {
    text-align: center;
    margin: 30px 0 15px;
    font-size: 1.6rem;
    color: #2c3e50;
    font-weight: 600;
    position: relative;
    display: inline-block;
    left: 50%;
    transform: translateX(-50%);
    padding-bottom: 10px;
}

.image-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 10%;
    width: 80%;
    height: 2px;
    background: linear-gradient(to right, transparent, #3498db, #2980b9, transparent);
}

/* 课题组简介文本样式 */
.rsit-intro-text {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #333;
    margin-bottom: 1.2rem;
    text-align: justify;
}

/* 特点项目样式 */
.feature-item {
    display: flex;
    margin-bottom: 2rem;
    background-color: #f8f9fa;
    border-radius: 10px;
    padding: 1.5rem;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    font-size: 1.8rem;
    margin-right: 1.5rem;
    color: #3498db;
    flex-shrink: 0;
}

.feature-content {
    flex: 1;
}

.feature-content h4 {
    font-size: 1.4rem;
    margin-bottom: 0.8rem;
    color: #2c3e50;
    font-weight: 600;
}

.feature-content p {
    font-size: 1.05rem;
    line-height: 1.7;
    color: #444;
    margin: 0;
    text-align: justify;
}

/* 高亮文本样式 */
.rsit-intro-highlight {
    font-size: 1.3rem;
    font-weight: 600;
    color: #2980b9;
    text-align: center;
    margin: 2rem 0;
    padding: 1rem;
    background-color: rgba(52, 152, 219, 0.08);
    border-radius: 8px;
    border-left: 4px solid #3498db;
}

/* 研究方向盒子样式 */
.research-directions-box {
    background-color: #f8f9fa;
    border-radius: 10px;
    padding: 1.5rem 2rem;
    margin: 2rem 0;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.research-directions-box h4 {
    font-size: 1.3rem;
    color: #2c3e50;
    margin-bottom: 1rem;
    font-weight: 600;
}

/* 方向列表样式 */
.direction-list {
    list-style-type: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem 2rem;
}

.direction-list li {
    font-size: 1.05rem;
    line-height: 1.6;
    color: #444;
    flex: 0 0 calc(50% - 2rem);
    display: flex;
    align-items: center;
}

.check-icon {
    margin-right: 0.5rem;
    color: #27ae60;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .feature-item {
        flex-direction: column;
        padding: 1.2rem;
    }
    
    .feature-icon {
        margin-right: 0;
        margin-bottom: 1rem;
    }
    
    .direction-list li {
        flex: 0 0 100%;
    }
}

/* 课题组简介整体容器样式 */
#about .container {
    position: relative;
    padding: 2.5rem;
    background: linear-gradient(145deg, #ffffff, #f5f7fa);
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    overflow: hidden;
}

#about .container::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 150px;
    height: 150px;
    background: radial-gradient(circle, rgba(52, 152, 219, 0.1) 0%, rgba(255, 255, 255, 0) 70%);
    border-radius: 50%;
    z-index: 0;
}

#about .container::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(52, 152, 219, 0.08) 0%, rgba(255, 255, 255, 0) 70%);
    border-radius: 50%;
    z-index: 0;
}

/* 课题组简介标题样式 */
#about h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #2c3e50;
    margin-bottom: 2rem;
    text-align: center;
    position: relative;
    z-index: 1;
}

#about h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: linear-gradient(to right, #3498db, #2980b9);
    border-radius: 3px;
}

/* 课题组简介文本样式 */
.rsit-intro-text {
    font-size: 1.15rem;
    line-height: 1.8;
    color: #333;
    margin-bottom: 1.5rem;
    text-align: justify;
    position: relative;
    z-index: 1;
    animation: fadeIn 0.8s ease-out;
}

.rsit-intro-text:first-of-type {
    font-size: 1.3rem;
    font-weight: 500;
    color: #2c3e50;
    text-align: center;
}

/* 特点项目样式 */
.feature-item {
    display: flex;
    margin-bottom: 2.5rem;
    background: linear-gradient(145deg, #ffffff, #f8f9fa);
    border-radius: 12px;
    padding: 1.8rem;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.06);
    transition: all 0.4s ease;
    position: relative;
    z-index: 1;
    border-left: 4px solid #3498db;
    animation: slideUp 0.6s ease-out forwards;
    opacity: 0;
    transform: translateY(20px);
}

.feature-item:nth-child(1) {
    animation-delay: 0.2s;
}

.feature-item:nth-child(2) {
    animation-delay: 0.4s;
}

.feature-item:nth-child(3) {
    animation-delay: 0.6s;
}

.feature-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.12);
}

.feature-icon {
    font-size: 2rem;
    margin-right: 1.8rem;
    color: #3498db;
    flex-shrink: 0;
    background: rgba(52, 152, 219, 0.1);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.4s ease;
}

.feature-item:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
    background: rgba(52, 152, 219, 0.2);
}

.feature-content {
    flex: 1;
}

.feature-content h4 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #2c3e50;
    font-weight: 600;
    position: relative;
    padding-bottom: 0.5rem;
}

.feature-content h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: #3498db;
    transition: all 0.3s ease;
}

.feature-item:hover .feature-content h4::after {
    width: 80px;
}

.feature-content p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #444;
    margin: 0;
    text-align: justify;
}

/* 高亮文本样式 */
.rsit-intro-highlight {
    font-size: 1.4rem;
    font-weight: 600;
    color: #2980b9;
    text-align: center;
    margin: 2.5rem 0;
    padding: 1.5rem;
    background: linear-gradient(145deg, #f8f9fa, #e6f7ff);
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(52, 152, 219, 0.1);
    position: relative;
    z-index: 1;
    overflow: hidden;
    animation: pulse 2s infinite;
}

.rsit-intro-highlight::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: linear-gradient(to bottom, #3498db, #2980b9);
}

/* 研究方向盒子样式 */
.research-directions-box {
    background: linear-gradient(145deg, #ffffff, #f8f9fa);
    border-radius: 12px;
    padding: 2rem 2.5rem;
    margin: 2.5rem 0;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.07);
    position: relative;
    z-index: 1;
    border-top: 4px solid #3498db;
    animation: fadeIn 0.8s ease-out;
    animation-delay: 0.8s;
    animation-fill-mode: both;
}

.research-directions-box h4 {
    font-size: 1.4rem;
    color: #2c3e50;
    margin-bottom: 1.5rem;
    font-weight: 600;
    text-align: center;
    position: relative;
    padding-bottom: 0.8rem;
}

.research-directions-box h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 2px;
    background: #3498db;
}

/* 方向列表样式 */
.direction-list {
    list-style-type: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 1rem 2.5rem;
}

.direction-list li {
    font-size: 1.1rem;
    line-height: 1.7;
    color: #444;
    flex: 0 0 calc(50% - 2.5rem);
    display: flex;
    align-items: center;
    padding: 0.5rem 0;
    transition: all 0.3s ease;
    animation: fadeInRight 0.5s ease-out forwards;
    opacity: 0;
    transform: translateX(20px);
}

.direction-list li:nth-child(1) { animation-delay: 0.9s; }
.direction-list li:nth-child(2) { animation-delay: 1.0s; }
.direction-list li:nth-child(3) { animation-delay: 1.1s; }
.direction-list li:nth-child(4) { animation-delay: 1.2s; }
.direction-list li:nth-child(5) { animation-delay: 1.3s; }
.direction-list li:nth-child(6) { animation-delay: 1.4s; }
.direction-list li:nth-child(7) { animation-delay: 1.5s; }

.direction-list li:hover {
    transform: translateX(5px);
    color: #2980b9;
}

.check-icon {
    margin-right: 0.8rem;
    color: #27ae60;
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(39, 174, 96, 0.1);
    width: 28px;
    height: 28px;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.direction-list li:hover .check-icon {
    transform: scale(1.2);
    background: rgba(39, 174, 96, 0.2);
}

/* 动画关键帧 */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInRight {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0% {
        box-shadow: 0 5px 15px rgba(52, 152, 219, 0.1);
    }
    50% {
        box-shadow: 0 5px 25px rgba(52, 152, 219, 0.2);
    }
    100% {
        box-shadow: 0 5px 15px rgba(52, 152, 219, 0.1);
    }
}

/* 响应式调整 */
@media (max-width: 992px) {
    #about .container {
        padding: 2rem;
    }
    
    #about h2 {
        font-size: 2.2rem;
    }
    
    .rsit-intro-text:first-of-type {
        font-size: 1.2rem;
    }
    
    .feature-content h4 {
        font-size: 1.4rem;
    }
}

@media (max-width: 768px) {
    .feature-item {
        flex-direction: column;
        padding: 1.5rem;
    }
    
    .feature-icon {
        margin-right: 0;
        margin-bottom: 1.2rem;
    }
    
    .direction-list li {
        flex: 0 0 100%;
    }
    
    .rsit-intro-highlight {
        font-size: 1.3rem;
        padding: 1.2rem;
    }
    
    #about h2 {
        font-size: 2rem;
    }
    
    .research-directions-box {
        padding: 1.5rem;
    }
}

/* 团队负责人和使命部分样式 */
.team-leader-section {
    display: flex;
    justify-content: space-between;
    gap: 30px;
    margin: 30px 0;
    position: relative;
    z-index: 1;
}

.leader-info, .team-mission {
    flex: 1;
    background: linear-gradient(145deg, #ffffff, #f8f9fa);
    border-radius: 12px;
    padding: 25px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.06);
    position: relative;
    overflow: hidden;
    transition: all 0.4s ease;
}

.leader-info:hover, .team-mission:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
}

.leader-info::before, .team-mission::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(to right, #3498db, #2980b9);
}

.leader-title, .mission-header {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
}

.leader-title i, .mission-header i {
    font-size: 24px;
    color: #3498db;
    margin-right: 15px;
    padding: 12px;
    background: rgba(52, 152, 219, 0.1);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.leader-info:hover .leader-title i, .team-mission:hover .mission-header i {
    transform: rotate(360deg);
    background: rgba(52, 152, 219, 0.2);
}

.leader-title h3, .mission-header h3 {
    font-size: 1.4rem;
    color: #2c3e50;
    margin: 0;
    font-weight: 600;
}

.leader-name {
    font-size: 1.6rem;
    font-weight: 700;
    color: #2980b9;
    margin: 15px 0 0;
    padding-left: 65px;
}

.team-mission p {
    font-size: 1.1rem;
    line-height: 1.7;
    color: #444;
    margin: 15px 0 0;
    padding-left: 65px;
}

.team-vision {
    background: linear-gradient(145deg, #f8f9fa, #e6f7ff);
    border-radius: 10px;
    padding: 20px 30px;
    margin: 30px 0;
    position: relative;
    z-index: 1;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    border-left: 4px solid #3498db;
    animation: fadeIn 0.8s ease-out;
}

.team-vision p {
    font-size: 1.3rem;
    font-weight: 500;
    color: #2c3e50;
    margin: 0;
    position: relative;
    display: inline-block;
}

.team-vision p::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 10%;
    width: 80%;
    height: 2px;
    background: linear-gradient(to right, transparent, #3498db, #2980b9, transparent);
}

/* 响应式调整 */
@media (max-width: 992px) {
    .team-leader-section {
        flex-direction: column;
        gap: 20px;
    }
    
    .leader-name, .team-mission p {
        padding-left: 0;
        text-align: center;
    }
    
    .leader-title, .mission-header {
        flex-direction: column;
        text-align: center;
    }
    
    .leader-title i, .mission-header i {
        margin-right: 0;
        margin-bottom: 10px;
    }
}