.about-content {
            background: white;
            padding: 40px;
            box-shadow: 0 5px 25px rgba(0,0,0,0.05);
            border-radius: 5px;
            margin-bottom: 60px;
        }
        
        .about-img {
            border-radius: 8px;
            overflow: hidden;
            margin-bottom: 30px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.1);
        }
        
        .about-text {
            font-size: 16px;
            line-height: 1.8;
            margin-bottom: 25px;
        }
        
        .about-text p {
            margin-bottom: 0px;
        }
        
        /* 时间线样式 */
        .timeline {
            position: relative;
            max-width: 1200px;
            margin: 0 auto;
        }
        
        .timeline::after {
            content: '';
            position: absolute;
            width: 6px;
            background-color: var(--primary);
            top: 0;
            bottom: 0;
            left: 50%;
            margin-left: -3px;
            border-radius: 3px;
        }
        
        .timeline-item {
            padding: 10px 40px;
            position: relative;
            width: 50%;
            box-sizing: border-box;
        }
        
        .timeline-item::after {
            content: '';
            position: absolute;
            width: 25px;
            height: 25px;
            background-color: white;
            border: 4px solid var(--primary);
            top: 15px;
            border-radius: 50%;
            z-index: 1;
        }
        
        .timeline-left {
            left: 0;
        }
        
        .timeline-left::after {
            right: -17px;
        }
        
        .timeline-right {
            left: 50%;
        }
        
        .timeline-right::after {
            left: -17px;
        }
        
        .timeline-content {
            padding: 20px 30px;
            background-color: white;
            position: relative;
            border-radius: 6px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.08);
        }
        
        .timeline-year {
            color: var(--primary);
            font-weight: bold;
            font-size: 20px;
            margin-bottom: 10px;
        }
        
        /* 企业文化 */
        .culture-box {
            background: white;
            border-radius: 8px;
            padding: 30px;
            text-align: center;
            height: 100%;
            box-shadow: 0 5px 20px rgba(0,0,0,0.05);
            transition: transform 0.3s;
        }
        
        .culture-box:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0,0,0,0.1);
        }
        
        .culture-icon {
            width: 80px;
            height: 80px;
            background: rgba(0, 102, 179, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            color: var(--primary);
            font-size: 32px;
        }
        
        .culture-title {
            font-size: 20px;
            font-weight: bold;
            margin-bottom: 15px;
            color: var(--dark);
        }
        
        /* 荣誉资质 */
        .certificate-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 30px;
        }
        
        .certificate-item {
            background: white;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.08);
            transition: transform 0.3s;
        }
        
        .certificate-item:hover {
            transform: translateY(-10px);
            box-shadow: 0 10px 25px rgba(0,0,0,0.15);
        }
        
        .certificate-img {
            height: 250px;
            background-color: #f9f9f9;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
            border-bottom: 1px solid #eee;
        }
        
        .certificate-body {
            padding: 20px;
        }
        
        .certificate-title {
            font-size: 18px;
            font-weight: bold;
            margin-bottom: 10px;
            color: var(--dark);
        }
        
        .certificate-date {
            color: #777;
            font-size: 14px;
        }
        
        /* 页脚样式 */
        .footer {
            background: var(--dark);
            color: #aaa;
            padding: 60px 0 0;
            margin-top: 60px;
        }
        
        .footer-title {
            color: white;
            font-size: 18px;
            margin-bottom: 25px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--primary);
            display: inline-block;
        }
        
        .footer-links li {
            margin-bottom: 12px;
            list-style: none;
        }
        
        .footer-links a {
            color: #aaa;
            text-decoration: none;
            transition: color 0.3s;
        }
        
        .footer-links a:hover {
            color: white;
        }
        
        .contact-info li {
            margin-bottom: 15px;
            list-style: none;
        }
        
        .contact-info i {
            color: var(--primary);
            width: 20px;
            margin-right: 10px;
        }
        
        .copyright {
            background: #1a1a1a;
            padding: 20px 0;
            margin-top: 40px;
            text-align: center;
            font-size: 14px;
        }
        
        /* 响应式调整 */
        @media (max-width: 991px) {
            .nav-link {
                padding: 15px !important;
            }
            
            .timeline::after {
                left: 31px;
            }
            
            .timeline-item {
                width: 100%;
                padding-left: 70px;
                padding-right: 25px;
            }
            
            .timeline-item::after {
                left: 25px;
            }
            
            .timeline-right {
                left: 0%;
            }
        }
        
        @media (max-width: 767px) {
            .header-top {
                text-align: center;
            }
            
            .page-header {
                padding: 60px 0;
            }
            
            .page-title {
                font-size: 32px;
            }
            
            .about-content {
                padding: 30px 20px;
            }
        }