:root {
            --primary: #4a4e9c;   /* 深蓝紫色 - 声学主题色 */
            --secondary: #6a5acd; /* 紫罗兰色 - 辅助色 */
            --accent: #5d7afb;   /* 亮蓝色 - 强调色 */
            --dark: #1a1a2e;     /* 深蓝色 - 用于深色区域 */
            --light: #f0f4ff;    /* 浅蓝色背景 */
            --section-bg: #ffffff;
            --section-alt: #f8f9ff;
            --header-bg: #4a4e9c; /* 头部声学色 */
            --footer-bg: #4a4e9c; /* 底部声学色 */
            --text-dark: #1a1a2e;
        }
        a {text-decoration: none;}
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        /* 移除 ul/ol 的默认内边距和外边距，避免缩进 */
        ul, ol {
          padding: 0;
          margin: 0;
          list-style: none; /* 移除列表符号（如圆点、数字） */
        }
        
        /* 单独针对 li 元素的样式重置（可选，确保无残留样式） */
        li {
          list-style-type: none; /* 强制移除列表符号 */
          margin: 0; /* 移除默认外边距 */
          padding: 0; /* 移除默认内边距 */
          /* 可选：添加自定义样式（如间距、字体等） */
          line-height: 1.5; /* 调整行高 */
        }
        
        body {
            font-family: 'Noto Sans SC', sans-serif;
            background: linear-gradient(to bottom, var(--light), #ffffff);
            color: #333;
            line-height: 1.6;
            overflow-x: hidden;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
        }
        
        /* 头部样式 - 声学色背景 */
        header {
            background: var(--header-bg);
            padding: 15px 0 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
        }
        
        .logo-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 10px 0 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        
        .logo {
            display: flex;
            align-items: center;
        }
        
        .logo img {
            height: 60px;
            margin-right: 15px;
        }
        
        .logo-text {
            display: flex;
            flex-direction: column;
        }
        
        .logo h1 {
            color: white;
            font-family: 'Playfair Display', serif;
            font-size: 1.8rem;
            letter-spacing: 1px;
            margin-left: 20px;
            text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
        }
        
        
        .contact-info {
            display: flex;
            align-items: center;
        }
        
        .contact-item {
            display: flex;
            align-items: center;
            margin-left: 25px;
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.15rem;
        }
        
        .contact-item i {
            margin-right: 8px;
            color: var(--accent);
        }
        
        nav {
            padding: 15px 0;
        }
        
        nav ul {
            display: flex;
            list-style: none;
            justify-content: flex-start;
        }
        
        nav li {
            margin: 0 10px 0 8px;
        }
        
        nav a {
            color: #fff;
            text-decoration: none;
            font-weight: 500;
            font-size: 1.15rem;
            padding: 5px 3px;
            transition: all 0.3s ease;
            position: relative;
        }
        
        nav a:hover, nav a.active {
            color: white;
        }
        
        nav a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent);
            transition: width 0.3s ease;
        }
        
        nav a:hover::after, nav a.active::after {
            width: 100%;
        }
        
        /* 特色区域 */
        .featured-section {
            background: var(--section-bg);
            padding: 30px 0;
        }
        
        .featured-container {
            display: flex;
            gap: 20px;
            background: var(--section-bg);
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            height: 500px;
        }
        
        /* 轮播图样式 */
        .carousel-container {
            flex: 1;
            position: relative;
            border-radius: 15px 0 0 15px;
            overflow: hidden;
            box-shadow: 5px 0 15px rgba(0, 0, 0, 0.08);
        }
        
        .carousel-slide {
            position: relative;
            width: 100%;
            height: 100%;
        }
        
        .carousel-item {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            opacity: 0;
            transition: opacity 1s ease;
            background-size: cover;
            background-position: center;
        }
        
        .carousel-item.active {
            opacity: 1;
        }
        
        .carousel-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 30px 25px;
            background: linear-gradient(transparent, rgba(0, 0, 0, 0.85));
            color: white;
        }
        
        .carousel-overlay h3 {
            font-size: 1.8rem;
            margin-bottom: 10px;
            font-weight: 700;
            text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
        }
        
        .carousel-overlay p {
            color: rgba(255, 255, 255, 0.9);
            font-size: 1.05rem;
            max-width: 90%;
        }
        
        .carousel-indicators {
            position: absolute;
            bottom: 20px;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            gap: 8px;
        }
        
        .indicator {
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.5);
            cursor: pointer;
            transition: all 0.3s ease;
        }
        
        .indicator.active {
            background: var(--accent);
            transform: scale(1.2);
        }
        
        /* 右侧文章列表 */
        .featured-tabs {
            flex: 1;
            display: flex;
            flex-direction: column;
            background: var(--section-bg);
        }
        
        .tabs-header {
            display: flex;
            border-bottom: 2px solid #f0f0f0;
        }
        
        .tab-title {
            flex: 1;
            padding: 15px 20px;
            cursor: pointer;
            font-weight: 500;
            color: #777;
            text-align: center;
            position: relative;
            transition: all 0.3s ease;
        }
        
        .tab-title.active, .tab-title:hover {
            color: var(--primary);
        }
        
        .tab-title.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--primary);
        }
        
        .tab-content {
            flex: 1;
            overflow-y: auto;
            padding: 0 15px;
        }
        
        .tab-panel {
            display: none;
            height: 100%;
        }
        
        .tab-panel.active {
            display: block;
            animation: fadeIn 0.5s ease;
        }
        
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }
        
        .article-list {
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        
        .article-item {
            padding: 15px 0;
            border-bottom: 1px dashed #e0e0e0;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        /*.article-item:last-child {
            border-bottom: none;
        }*/
        
        .article-item h3 {
            font-size: 1rem;
            font-weight: normal;
            margin-right: 15px;
            transition: color 0.3s ease;
            flex: 1;
        }
        .article-item h3 a {color:#000;}
        
        .article-item:hover h3 {
            color: var(--primary);
        }
        
        .article-date {
            color: #6c757d;
            font-size: 0.9rem;
            min-width: 100px;
            text-align: right;
        }
        
        /* 内容区域 */
        .section-title {
            text-align: center;
            margin-bottom: 40px;
            position: relative;
        }
        
        .section-title h2 {
            font-family: 'Playfair Display', serif;
            font-size: 2.3rem;
            color: var(--primary);
            display: inline-block;
            padding-bottom: 12px;
            position: relative;
        }
        
        .section-title h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 3px;
            background: var(--primary);
        }
        
        .section-title .more-link {
            position: absolute;
            right: 0;
            top: 50%;
            transform: translateY(-50%);
            font-size: 1rem;
            color: var(--primary);
            font-weight: 500;
            text-decoration: none;
        }
        
        .section-title .more-link:hover {
            text-decoration: underline;
        }
        
        /* 研究领域 */
        .research-section {
            background: var(--section-alt);
            padding: 60px 0;
        }
        
        .research-container {
            background: var(--section-alt);
            border-radius: 15px;
            padding: 30px;
            position: relative;
            overflow: hidden;
            box-shadow: 0 5px 25px rgba(0, 0, 0, 0.08);
        }
        
        .research-container::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 5px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
        }
        
        .research-intro {
            text-align: center;
            max-width: 1100px;
            margin: 0 auto 30px;
        }
        
        .research-intro p {
            color: #555;
            font-size: 1.1rem;
            line-height: 1.8;
        }
        
        .research-cards {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
        }
        
        .research-card {
            background: #fff;
            border-radius: 10px;
            padding: 25px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            text-align: center;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
            border: 1px solid rgba(0, 0, 0, 0.05);
        }
        
        .research-card::before {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: var(--primary);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.4s ease;
        }
        
        .research-card:hover::before {
            transform: scaleX(1);
        }
        
        .research-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
        }
        
        .research-icon {
            font-size: 2.8rem;
            color: var(--primary);
            margin-bottom: 15px;
            transition: color 0.3s ease;
        }
        
        .research-card:hover .research-icon {
            color: var(--secondary);
        }
        
        .research-card h3 {
            font-size: 1.3rem;
            margin-bottom: 12px;
            color: var(--text-dark);
        }
        
        .research-card p {
            color: #666;
            font-size: 0.95rem;
        }
        
        /* 实验室图片展示区 */
        .gallery-section {
            background: var(--section-bg);
            padding: 60px 0;
        }
        
        .gallery-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
            gap: 20px;
        }
        
        .gallery-item {
            position: relative;
            height: 260px;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
            transition: all 0.4s ease;
        }
        
        .gallery-item img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        
        .gallery-item:hover {
            transform: translateY(-8px);
            box-shadow: 0 12px 25px rgba(0, 0, 0, 0.15);
        }
        
        .gallery-item:hover img {
            transform: scale(1.05);
        }
        
        .gallery-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 15px;
            background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
            color: white;
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        
        .gallery-item:hover .gallery-overlay {
            opacity: 1;
        }
        
        .gallery-overlay h3 {
            font-size: 1.1rem;
            margin-bottom: 5px;
        }
        
        .gallery-overlay p {
            font-size: 0.85rem;
            opacity: 0.9;
        }
        
        /* 专家团队 */
        .team-section {
            background: linear-gradient(135deg, var(--dark) 0%, var(--primary) 100%);
            padding: 60px 0;
            color: white;
        }
        
        .team-container {
            max-width: 1200px;
            margin: 0 auto;
        }
        
        .team-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
            margin-top: 30px;
        }
        
        .team-card {
            background: rgba(255, 255, 255, 0.1);
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
            transition: all 0.4s ease;
            backdrop-filter: blur(5px);
        }
        
        .team-card:hover {
            transform: translateY(-10px);
            background: rgba(255, 255, 255, 0.15);
        }
        
        .team-img {
            height: 250px;
            width: 100%;
            overflow: hidden;
        }
        
        .team-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        
        .team-card:hover .team-img img {
            transform: scale(1.05);
        }
        
        .team-info {
            padding: 20px;
            text-align: center;
        }
        
        .team-info h3 {
            font-size: 1.4rem;
            margin-bottom: 5px;
        }
        
        .team-info .position {
            color: var(--accent);
            font-weight: 500;
            margin-bottom: 10px;
            display: block;
        }
        
        .team-info p {
            font-size: 0.95rem;
            opacity: 0.9;
            margin-bottom: 15px;
        }
        
        .team-social {
            display: flex;
            justify-content: center;
            gap: 10px;
        }
        
        .team-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            color: white;
            transition: all 0.3s ease;
        }
        
        .team-social a:hover {
            background: var(--accent);
            transform: translateY(-3px);
        }
        
        /* 教育计划 */
        .education-section {
            background: var(--section-bg);
            padding: 60px 0;
        }
        
        .education-container {
            display: flex;
            flex-wrap: wrap;
            gap: 30px;
        }
        
        .education-card {
            flex: 1;
            min-width: 300px;
            background: white;
            border-radius: 10px;
            padding: 30px;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
            transition: all 0.4s ease;
        }
        
        .education-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
        }
        
        .edu-icon {
            font-size: 3rem;
            margin-bottom: 20px;
            color: var(--primary);
        }
        
        .education-card h3 {
            font-size: 1.5rem;
            margin-bottom: 15px;
            color: var(--dark);
        }
        
        .education-card p {
            color: #555;
            margin-bottom: 20px;
            line-height: 1.8;
        }
        
        /* 实习生招募 */
        .volunteer-section {
            background: var(--section-alt);
            padding: 60px 0;
        }
        
        .volunteer-container {
            display: flex;
            gap: 30px;
            background: white;
            border-radius: 15px;
            overflow: hidden;
            box-shadow: 0 5px 25px rgba(0, 0, 0, 0.08);
        }
        
        .volunteer-image {
            flex: 1;
            min-height: 380px;
            background: url('/images/lou.jpg') center/cover no-repeat;
            border-radius: 15px 0 0 15px;
        }
        
        .volunteer-content {
            flex: 1;
            padding: 30px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        
        .volunteer-content h2 {
            font-size: 1.8rem;
            color: var(--primary);
            margin-bottom: 15px;
        }
        
        .volunteer-content p {
            color: #555;
            margin-bottom: 20px;
            line-height: 1.8;
            font-size: 0.95rem;
        }
        
        .btn {
            display: inline-block;
            padding: 12px 30px;
            background: var(--primary);
            color: white;
            text-decoration: none;
            border-radius: 50px;
            font-weight: 500;
            transition: all 0.3s ease;
            border: 2px solid var(--primary);
            text-align: center;
            max-width: 200px;
            font-size: 0.95rem;
            box-shadow: 0 4px 10px rgba(74, 78, 156, 0.3);
        }
        
        .btn:hover {
            background: transparent;
            color: var(--primary);
            transform: translateY(-3px);
            box-shadow: 0 7px 15px rgba(0, 0, 0, 0.15);
        }
        
        /* 最新新闻 */
        .news-section {
            background: var(--section-bg);
            padding: 60px 0;
        }
        
        .news-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 25px;
        }
        
        .news-card {
            background: white;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
            transition: all 0.4s ease;
        }
        
        .news-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 12px 25px rgba(0, 0, 0, 0.15);
        }
        
        .news-img {
            height: 200px;
            width: 100%;
            overflow: hidden;
        }
        
        .news-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        
        .news-card:hover .news-img img {
            transform: scale(1.05);
        }
        
        .news-content {
            padding: 20px;
        }
        
        .news-date {
            display: inline-block;
            background: var(--primary);
            color: white;
            padding: 5px 12px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
            margin-bottom: 12px;
        }
        
        .news-content h3 {
            font-size: 1rem;
            font-weight: normal;
            margin-bottom: 12px;
            color: var(--dark);
            transition: color 0.3s ease;
        }
        
        .news-card:hover .news-content h3 {
            color: var(--primary);
        }
        
        .news-content p {
            color: #555;
            margin-bottom: 15px;
            font-size: 0.95rem;
        }
        
        /* 页脚 - 声学色背景 */
        footer {
            background: var(--footer-bg);
            color: rgba(255, 255, 255, 0.8);
            padding: 60px 0 30px;
            margin-top: 60px;
        }
        
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            margin-bottom: 30px;
        }
        
        .footer-col h3 {
            color: white;
            font-size: 1.3rem;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 8px;
        }
        
        .footer-col h3::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 60px;
            height: 2px;
            background: var(--accent);
        }
        
        .footer-col p {
            margin-bottom: 15px;
            font-size: 0.95rem;
        }
        
        .footer-links {
            list-style: none;
        }
        
        .footer-links li {
            margin-bottom: 10px;
        }
        
        .footer-links a {
            color: rgba(255, 255, 255, 0.7);
            text-decoration: none;
            transition: all 0.3s ease;
            font-size: 0.95rem;
        }
        
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        
        .social-links {
            display: flex;
            margin-top: 15px;
        }
        
        .social-links a {
            display: flex;
            align-items: center;
            justify-content: center;
            height: 38px;
            width: 38px;
            background: rgba(255, 255, 255, 0.1);
            color: white;
            border-radius: 50%;
            margin-right: 12px;
            transition: all 0.3s ease;
            font-size: 1rem;
        }
        
        .social-links a:hover {
            background: var(--accent);
            transform: translateY(-3px);
        }
.research-link {
            display: inline-block;
            color: var(--primary);
            text-decoration: none;
            font-weight: 500;
            font-size: 0.95rem;
            margin-top: 15px;
            transition: all 0.3s ease;
        }
        
        .research-link:hover {
            color: var(--secondary);
            transform: translateX(5px);
        }
        
        .research-link i {
            margin-left: 8px;
            transition: transform 0.3s ease;
        }
        
        .research-link:hover i {
            transform: translateX(5px);
        }
        
        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.6);
        }
        
        /* 声学特效 */
        .acoustic-wave {
            position: absolute;
            top: -35px;
            left: 0;
            width: 100%;
            height: 100px;
            background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 120" preserveAspectRatio="none"><path d="M0,0V46.29c47.79,22.2,103.59,32.17,158,28,70.36-5.37,136.33-33.31,206.8-37.5C438.64,32.43,512.34,53.67,583,72.05c69.27,18,138.3,24.88,209.4,13.08,36.15-6,69.85-17.84,104.45-29.34C989.49,25,1113-14.29,1200,52.47V0Z" opacity=".25" fill="%235d7afb"></path><path d="M0,0V15.81C13,36.92,27.64,56.86,47.69,72.05,99.41,111.27,165,111,224.58,91.58c31.15-10.15,60.09-26.07,89.67-39.8,40.92-19,84.73-46,130.83-49.67,36.26-2.85,70.9,9.42,98.6,31.56,31.77,25.39,62.32,62,103.63,73,40.44,10.79,81.35-6.69,119.13-24.28s75.16-39,116.92-43.05c59.73-5.85,113.28,22.88,168.9,38.84,30.2,8.66,59,6.17,87.09-7.5,22.43-10.89,48-26.93,60.65-49.24V0Z" opacity=".5" fill="%235d7afb"></path><path d="M0,0V5.63C149.93,59,314.09,71.32,475.83,42.57c43-7.64,84.23-20.12,127.61-26.46,59-8.63,112.48,12.24,165.56,35.4C827.93,77.22,886,95.24,951.2,90c86.53-7,172.46-45.71,248.8-84.81V0Z" fill="%235d7afb"></path></svg>');
            background-size: cover;
            background-repeat: no-repeat;
            z-index: -1;
        }
        
        /* 响应式设计 */
        @media (max-width: 992px) {
            .featured-container, .volunteer-container {
                flex-direction: column;
                height: auto;
            }
            
            .carousel-container, .volunteer-image {
                min-height: 350px;
                border-radius: 15px 15px 0 0 !important;
            }
            
            .featured-tabs {
                border-radius: 0 0 15px 15px;
            }
            
            .logo-container {
                flex-direction: column;
                text-align: center;
                padding-bottom: 15px;
            }
            
            .contact-info {
                margin-top: 15px;
                justify-content: center;
            }
            
            .contact-item {
                margin: 0 10px;
            }
            .footer-content {
                grid-template-columns: 1fr;
                padding:10px;
            }
        }
        
        @media (max-width: 768px) {
            nav ul {
                flex-wrap: wrap;
                justify-content: center;
            }
            
            nav li {
                margin: 0 15px 10px 0;
            }
            
            .research-cards,
            .gallery-container,
            .news-container,
            .team-grid {
                grid-template-columns: 1fr;
            }
            
            .section-title .more-link {
                position: relative;
                display: block;
                margin-top: 10px;
                text-align: center;
            }
            
            .article-item {
                flex-direction: column;
                align-items: flex-start;
            }
            
            .article-date {
                margin-top: 5px;
                text-align: left;
            }
            
            .education-container {
                flex-direction: column;
            }
            .footer-content {
                grid-template-columns: 1fr;
                padding:10px;
            }
        }
        
        @media (max-width: 576px) {
            .logo-text {display:none;}
            .section-title h2 {
                font-size: 1.8rem;
            }
            
            .footer-content {
                grid-template-columns: 1fr;
                padding:10px;
            }
            .list-section {padding:10px 0!important;}
            .breadcrumb {margin-bottom:0px!important;}
            
            .tabs-header {
                flex-wrap: wrap;
            }
            
            .tab-title {
                padding: 10px 15px;
                font-size: 0.9rem;
            }
            
            .volunteer-content {
                padding: 20px;
            }
            
            .logo h1 {
                font-size: 1.5rem;
            }
            
            nav a {
                font-size: 0.95rem;
            }
            .meta-item {display:none!important;}
        }