/* 关于我们页面独享CSS */
        main {
            margin-top: 80px;
            padding: 40px 0;
        }
        
        .page-header {
            text-align: center;
            margin-bottom: 60px;
            animation: fadeInUp 0.6s ease forwards;
            opacity: 0;
            transform: translateY(30px);
        }
        
        .page-header h1 {
            font-size: 36px;
            color: var(--primary-color);
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }
        
        .page-header h1::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 3px;
            background: linear-gradient(90deg, var(--secondary-color), var(--accent-color));
        }
        
        .page-header p {
            color: #666;
            max-width: 700px;
            margin: 0 auto;
            font-size: 18px;
        }
        
        .about-container {
            background-color: white;
            border-radius: 15px;
            box-shadow: var(--shadow);
            overflow: hidden;
            margin-bottom: 60px;
            animation: fadeInUp 0.6s ease forwards;
            opacity: 0;
            transform: translateY(30px);
            animation-delay: 0.2s;
        }
        
        .about-header {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: white;
            padding: 40px 30px;
            text-align: center;
        }
        
        .about-header h2 {
            font-size: 32px;
            margin-bottom: 15px;
        }
        
        .brand-slogan {
            font-size: 20px;
            font-weight: 300;
            margin-bottom: 10px;
            opacity: 0.9;
        }
        
        .about-header p {
            opacity: 0.9;
            max-width: 800px;
            margin: 0 auto;
            line-height: 1.6;
        }
        
        .about-content {
            padding: 50px 30px;
        }
        
        .company-intro {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
            margin-bottom: 60px;
        }
        
        .intro-text h3 {
            font-size: 28px;
            color: var(--primary-color);
            margin-bottom: 20px;
        }
        
        .intro-text p {
            margin-bottom: 20px;
            line-height: 1.8;
            color: #555;
        }
        
        .intro-image {
            position: relative;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        
        .intro-image img {
            width: 100%;
            height: auto;
            display: block;
            transition: var(--transition);
        }
        
        .intro-image:hover img {
            transform: scale(1.05);
        }
        
        .stats-section {
            background: linear-gradient(135deg, #f8f9fa, #e9ecef);
            padding: 50px 40px;
            border-radius: 15px;
            margin: 60px 0;
            text-align: center;
        }
        
        .stats-section h3 {
            font-size: 28px;
            color: var(--primary-color);
            margin-bottom: 40px;
        }
        
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 25px;
        }
        
        .stat-item {
            padding: 30px 20px;
            background-color: white;
            border-radius: 10px;
            box-shadow: var(--shadow);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        
        .stat-item::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 5px;
            height: 100%;
            background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
        }
        
        .stat-item:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
        }
        
        .stat-number {
            font-size: 42px;
            font-weight: 700;
            margin-bottom: 10px;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        
        .stat-text {
            font-size: 16px;
            color: #666;
        }
        
        .brand-values {
            margin: 50px 0 40px;
        }
        
        .section-title {
            font-size: 28px;
            color: var(--primary-color);
            margin-bottom: 35px;
            padding-bottom: 15px;
            border-bottom: 2px solid var(--light-color);
            position: relative;
        }
        
        .section-title::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100px;
            height: 2px;
            background: linear-gradient(90deg, var(--secondary-color), var(--accent-color));
        }
        
        .values-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        
        .value-card {
            background-color: white;
            padding: 35px 30px;
            border-radius: 10px;
            box-shadow: var(--shadow);
            text-align: center;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
            animation: fadeInUp 0.6s ease forwards;
            opacity: 0;
            transform: translateY(30px);
        }
        
        .value-card:nth-child(1) { animation-delay: 0.3s; }
        .value-card:nth-child(2) { animation-delay: 0.4s; }
        .value-card:nth-child(3) { animation-delay: 0.5s; }
        .value-card:nth-child(4) { animation-delay: 0.6s; }
        
        .value-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 5px;
            background: linear-gradient(90deg, var(--secondary-color), var(--accent-color));
        }
        
        .value-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
        }
        
        .value-icon {
            width: 80px;
            height: 80px;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 25px;
            color: white;
            font-size: 32px;
        }
        
        .value-card h4 {
            font-size: 20px;
            margin-bottom: 15px;
            color: var(--primary-color);
        }
        
        .value-card p {
            color: #666;
            line-height: 1.6;
        }
        
        .services-overview {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: white;
            padding: 50px 40px;
            border-radius: 15px;
            margin-top: 60px;
            text-align: center;
        }
        
        .services-overview h3 {
            font-size: 30px;
            margin-bottom: 30px;
        }
        
        .services-overview p {
            margin-bottom: 20px;
            opacity: 0.9;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;

            line-height: 1.6;
        }
        
        .service-highlights {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
            margin-top: 40px;
        }
        
        .service-highlight {
            background: rgba(255, 255, 255, 0.1);
            padding: 25px;
            border-radius: 10px;
            transition: var(--transition);
        }
        
        .service-highlight:hover {
            background: rgba(255, 255, 255, 0.2);
            transform: translateY(-5px);
        }
        
        .service-highlight h4 {
            font-size: 18px;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
        }
        
        .service-highlight h4 i {
            color: var(--accent-color);
        }
        
        .timeline-section {
            margin-top: 60px;
        }
        
        .timeline {
            position: relative;
            max-width: 900px;
            margin: 40px auto 0;
        }
        
        .timeline::before {
            content: '';
            position: absolute;
            top: 0;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 4px;
            background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
            border-radius: 2px;
        }
        
        .timeline-item {
            position: relative;
            margin-bottom: 50px;
            width: 50%;
            padding-right: 40px;
            animation: fadeInUp 0.6s ease forwards;
            opacity: 0;
            transform: translateY(30px);
        }
        
        .timeline-item:nth-child(odd) {
            left: 0;
        }
        
        .timeline-item:nth-child(even) {
            left: 50%;
            padding-left: 40px;
            padding-right: 0;
        }
        
        .timeline-item:nth-child(1) { animation-delay: 0.3s; }
        .timeline-item:nth-child(2) { animation-delay: 0.4s; }
        .timeline-item:nth-child(3) { animation-delay: 0.5s; }
        .timeline-item:nth-child(4) { animation-delay: 0.6s; }
        .timeline-item:nth-child(5) { animation-delay: 0.7s; }
        .timeline-item:nth-child(6) { animation-delay: 0.8s; }
        
        .timeline-content {
            background-color: white;
            padding: 25px;
            border-radius: 10px;
            box-shadow: var(--shadow);
            position: relative;
        }
        
        .timeline-content::before {
            content: '';
            position: absolute;
            top: 20px;
            width: 20px;
            height: 20px;
            background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
            border-radius: 50%;
        }
        
        .timeline-item:nth-child(odd) .timeline-content::before {
            right: -50px;
        }
        
        .timeline-item:nth-child(even) .timeline-content::before {
            left: -50px;
        }
        
        .timeline-year {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary-color);
            margin-bottom: 10px;
        }
        
        .timeline-content h4 {
            font-size: 18px;
            color: var(--primary-color);
            margin-bottom: 10px;
        }
        
        .timeline-content p {
            color: #666;
            line-height: 1.5;
        }
        
        /* 动画关键帧 */
        @keyframes fadeInUp {
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        /* 响应式设计 */
        @media (max-width: 992px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            
            .service-highlights {
                grid-template-columns: repeat(2, 1fr);
            }
            
            .timeline::before {
                left: 30px;
            }
            
            .timeline-item {
                width: 100%;
                left: 0 !important;
                padding-left: 70px !important;
                padding-right: 0 !important;
            }
            
            .timeline-item:nth-child(odd) .timeline-content::before,
            .timeline-item:nth-child(even) .timeline-content::before {
                left: -40px;
            }
        }
        
        @media (max-width: 768px) {
            .company-intro {
                grid-template-columns: 1fr;
            }
            
            .values-grid {
                grid-template-columns: 1fr;
            }
            
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            
            .service-highlights {
                grid-template-columns: 1fr;
            }
        }
        
        @media (max-width: 576px) {
            .stats-grid {
                grid-template-columns: 1fr;
            }
            
            .page-header h1 {
                font-size: 30px;
            }
            
            .page-header p {
                font-size: 16px;
            }
            
            .about-header h2 {
                font-size: 26px;
            }
            
            .brand-slogan {
                font-size: 18px;
            }
            
            .section-title {
                font-size: 24px;
            }
        }