/* 关于研究院 */
        .about-section1 {
            padding: 60px 0;
        }
        
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }
        
        .section-title {
            font-size: 36px;
            color: var(--primary);
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }
        
        .section-title::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: var(--accent);
            border-radius: 2px;
        }
        
        .section-subtitle {
            font-size: 18px;
            color: var(--gray);
            max-width: 700px;
            margin: 20px auto 0;
            line-height: 1.8;
        }
        
        .about-content1 {
            display: flex;
            gap: 40px;
            align-items: center;
        }
        
        .about-text {
            flex: 1;
        }
        
        .about-text p {
            margin-bottom: 20px;
            font-size: 17px;
            line-height: 1.8;
            color: #444;
        }
        
        .about-image {
            flex: 1;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
        }
        
        .about-image img {
            height: auto;
            display: block;
            transition: transform 0.5s;
            float: left;
        }
        
        .about-image:hover img {
            transform: scale(1.05);
        }
        
        /* 研究院使命 */
        .mission-section {
            background: linear-gradient(135deg, var(--primary-light), #ffffff);
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }
        
        .mission-section::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -100px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(0, 86, 179, 0.05);
        }
        
        .mission-cards {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        
        .mission-card {
            background: white;
            border-radius: 10px;
            padding: 40px 30px;
            text-align: center;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
            transition: all 0.4s;
            position: relative;
            overflow: hidden;
            z-index: 1;
        }
        
        .mission-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 5px;
            background: var(--primary);
            transition: height 0.4s;
            z-index: -1;
        }
        
        .mission-card:hover::before {
            height: 100%;
        }
        
        .mission-card:hover {
            transform: translateY(-10px);
            color: white;
        }
        
        .mission-card:hover h3,
        .mission-card:hover p,
        .mission-card:hover .mission-icon {
            color: white;
        }
        
        .mission-icon {
            font-size: 48px;
            color: var(--primary);
            margin-bottom: 20px;
            transition: all 0.4s;
        }
        
        .mission-card h3 {
            font-size: 24px;
            margin-bottom: 15px;
            color: var(--primary-dark);
            transition: all 0.4s;
        }
        
        .mission-card p {
            color: var(--gray);
            line-height: 1.7;
            transition: all 0.4s;
        }
        
        /* 发展历程 */
        .timeline-section {
            padding: 80px 0;
        }
        
        .timeline {
            position: relative;
            max-width: 900px;
            margin: 0 auto;
        }
        
        .timeline::before {
            content: '';
            position: absolute;
            top: 0;
            bottom: 0;
            width: 4px;
            background: var(--primary-light);
            left: 50%;
            margin-left: -2px;
        }
        
        .timeline-item {
            position: relative;
            margin-bottom: 50px;
            width: 100%;
        }
        
        .timeline-item:nth-child(odd) {
            padding-right: calc(50% + 30px);
            text-align: right;
        }
        
        .timeline-item:nth-child(even) {
            padding-left: calc(50% + 30px);
        }
        
        .timeline-content {
            background: white;
            border-radius: 10px;
            padding: 30px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
            position: relative;
        }
        
        .timeline-content::before {
            content: '';
            position: absolute;
            width: 20px;
            height: 20px;
            background: var(--primary);
            border-radius: 50%;
            top: 40px;
        }
        
        .timeline-item:nth-child(odd) .timeline-content::before {
            right: -40px;
        }
        
        .timeline-item:nth-child(even) .timeline-content::before {
            left: -40px;
        }
        
        .timeline-year {
            font-size: 24px;
            color: var(--primary);
            margin-bottom: 10px;
            font-weight: 700;
        }
        
        .timeline-title {
            font-size: 20px;
            margin-bottom: 15px;
            color: var(--primary-dark);
        }
        
        /* 领导团队 */
        .team-section {
            background: linear-gradient(135deg, #f5f7fa 0%, #e6f0ff 100%);
            padding: 80px 0;
        }
        
        .team-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
        }
        
        .team-member {
            background: white;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
            transition: all 0.4s;
            text-align: center;
        }
        
        .team-member:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 86, 179, 0.2);
        }
        
        .team-img {
            height: 280px;
            background: var(--primary);
            position: relative;
            overflow: hidden;
        }
        
        .team-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s;
        }
        
        .team-member:hover .team-img img {
            transform: scale(1.1);
        }
        
        .team-info {
            padding: 25px;
        }
        
        .team-name {
            font-size: 20px;
            color: var(--primary-dark);
            margin-bottom: 5px;
        }
        
        .team-position {
            color: var(--primary);
            margin-bottom: 15px;
            font-weight: 600;
        }
        
        .team-contact {
            display: flex;
            justify-content: center;
            gap: 15px;
            margin-top: 15px;
        }
        
        .team-contact a {
            color: var(--gray);
            transition: all 0.3s;
        }
        
        .team-contact a:hover {
            color: var(--primary);
        }
      
        /* 响应式设计 */
        @media (max-width: 992px) {
            .about-content {
                flex-direction: column;
            }
            
            .timeline::before {
                left: 30px;
            }
            
            .timeline-item {
                padding-left: calc(50% + 30px);
                padding-right: 0;
                text-align: left;
            }
            
            .timeline-item:nth-child(odd) {
                padding-right: 0;
                text-align: left;
            }
            
            .timeline-item:nth-child(odd) .timeline-content::before {
                left: -40px;
                right: auto;
            }
        }
        
        @media (max-width: 768px) {
            .header-content {
                flex-direction: column;
            }
            
            .nav-menu {
                margin-top: 15px;
                flex-wrap: wrap;
                justify-content: center;
            }
            
            .search-box {
                margin: 15px 0 0;
                width: 100%;
            }
            
            .search-box input {
                width: 100%;
            }
            
            .section-title {
                font-size: 28px;
            }
            
            .page-header h1 {
                font-size: 36px;
            }
        }