/* 独享CSS - 关于我们页面主体部分 */
        main {
            margin-top: 80px;
        }

        /* 页面标题区域 */
        .page-header {
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            color: var(--text-light);
            padding: 60px 0;
            text-align: center;
        }

        .page-header h1 {
            font-size: 36px;
            margin-bottom: 15px;
        }

        .page-header p {
            font-size: 18px;
            max-width: 700px;
            margin: 0 auto;
            opacity: 0.9;
        }

        /* 关于我们内容区域 */
        .section {
            padding: 80px 0;
        }

        .section-title {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-title h2 {
            font-size: 36px;
            color: var(--primary-color);
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }

        .section-title h2::after {
            content: '';
            position: absolute;
            left: 50%;
            bottom: -10px;
            transform: translateX(-50%);
            width: 80px;
            height: 3px;
            background-color: var(--accent-color);
        }

        .section-title p {
            color: #666;
            max-width: 700px;
            margin: 0 auto;
        }

        /* 公司介绍区域 */
        .about-content {
            display: flex;
            align-items: center;
            gap: 50px;
            margin-bottom: 60px;
        }

        .about-text {
            flex: 1;
        }

        .about-text h3 {
            font-size: 28px;
            color: var(--primary-color);
            margin-bottom: 20px;
        }

        .about-text p {
            margin-bottom: 15px;
        }

        .about-image {
            flex: 1;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }

        .about-image img {
            width: 100%;
            height: auto;
            display: block;
            transition: var(--transition);
        }

        .about-image:hover img {
            transform: scale(1.05);
        }

        /* 公司历程 */
        .company-history {
            background-color: #f5f7fa;
            padding: 60px 0;
            margin: 60px 0;
        }

        .history-timeline {
            position: relative;
            max-width: 800px;
            margin: 0 auto;
        }

        .history-timeline::before {
            content: '';
            position: absolute;
            top: 0;
            bottom: 0;
            left: 50%;
            width: 3px;
            background-color: var(--accent-color);
            transform: translateX(-50%);
        }

        .history-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 50px;
            position: relative;
        }

        .history-item:nth-child(odd) {
            flex-direction: row-reverse;
        }

        .history-content {
            width: 45%;
            padding: 25px;
            background-color: white;
            border-radius: 8px;
            box-shadow: var(--shadow);
            position: relative;
        }

        .history-item:nth-child(odd) .history-content {
            text-align: right;
        }

        .history-content::after {
            content: '';
            position: absolute;
            top: 50%;
            width: 20px;
            height: 20px;
            background-color: var(--accent-color);
            border-radius: 50%;
            transform: translateY(-50%);
        }

        .history-item:nth-child(even) .history-content::after {
            right: -60px;
        }

        .history-item:nth-child(odd) .history-content::after {
            left: -60px;
        }

        .history-year {
            font-size: 24px;
            font-weight: bold;
            color: var(--primary-color);
            margin-bottom: 10px;
        }

        .history-title {
            font-size: 20px;
            color: var(--secondary-color);
            margin-bottom: 10px;
        }

        /* 核心优势区域 */
        .advantages {
            background-color: var(--light-color);
        }

        .advantage-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }

        .advantage-card {
            background-color: var(--text-light);
            padding: 30px;
            border-radius: 8px;
            box-shadow: var(--shadow);
            text-align: center;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .advantage-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 5px;
            background-color: var(--accent-color);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform 0.5s ease;
        }

        .advantage-card:hover::before {
            transform: scaleX(1);
        }

        .advantage-card:hover {
            transform: translateY(-10px);
        }

        .advantage-icon {
            font-size: 40px;
            color: var(--secondary-color);
            margin-bottom: 20px;
        }

        .advantage-card h3 {
            font-size: 20px;
            margin-bottom: 15px;
            color: var(--primary-color);
        }

        /* 服务流程区域 */
        .process {
            background-color: var(--primary-color);
            color: var(--text-light);
        }

        .process .section-title h2 {
            color: var(--text-light);
        }

        .process .section-title p {
            color: rgba(255, 255, 255, 0.8);
        }

        .process-steps {
            display: flex;
            justify-content: space-between;
            position: relative;
            max-width: 1000px;
            margin: 0 auto;
        }

        .process-steps::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 0;
            width: 100%;
            height: 3px;
            background-color: var(--accent-color);
            z-index: 1;
        }

        .process-step {
            text-align: center;
            position: relative;
            z-index: 2;
            flex: 1;
            padding: 0 15px;
        }

        .step-icon {
            width: 80px;
            height: 80px;
            background-color: var(--accent-color);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 30px;
            color: var(--text-color);
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0% { box-shadow: 0 0 0 0 rgba(212, 175, 55, 0.7); }
            70% { box-shadow: 0 0 0 15px rgba(212, 175, 55, 0); }
            100% { box-shadow: 0 0 0 0 rgba(212, 175, 55, 0); }
        }

        .step-title {
            font-size: 18px;
            margin-bottom: 10px;
            font-weight: bold;
        }

        /* 响应式设计 */
        @media (max-width: 992px) {
            .about-content {
                flex-direction: column;
            }
            
            .history-timeline::before {
                left: 30px;
            }
            
            .history-item {
                flex-direction: row !important;
                justify-content: flex-start;
            }
            
            .history-content {
                width: calc(100% - 80px);
                margin-left: 80px;
                text-align: left !important;
            }
            
            .history-item:nth-child(even) .history-content::after,
            .history-item:nth-child(odd) .history-content::after {
                left: -60px;
            }
            
            .process-steps {
                flex-direction: column;
                gap: 40px;
            }
            
            .process-steps::before {
                display: none;
            }
        }

        @media (max-width: 768px) {
            .mobile-menu-btn {
                display: block;
            }
            
            .nav-menu {
                position: fixed;
                top: 70px;
                left: -100%;
                width: 100%;
                flex-direction: column;
                background-color: var(--primary-color);
                transition: var(--transition);
                padding: 20px 0;
                box-shadow: 0 10px 10px rgba(0, 0, 0, 0.1);
            }
            
            .nav-menu.active {
                left: 0;
            }
            
            .nav-item {
                margin: 10px 0;
                text-align: center;
            }
            
            .page-header h1 {
                font-size: 28px;
            }
            
            .page-header p {
                font-size: 16px;
            }
        }