/* Global styles */
        body {
            font-family: "Arial", "Microsoft Yahei", sans-serif;
            color: #333;
            background-color: #f8f9fa;
            line-height: 1.6;
        }
        a {
            text-decoration: none;
            color: #B9B9B9;
            transition: all 0.3s ease;
        }
        a:hover {
            color: #0F3E99;
        }
        .container {
            max-width: 1200px;
        }
        /* Title style */
        .section-title {
            position: relative;
            margin-bottom: 40px;
        }
        .section-title h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #222;
            text-align: center;
        }
        .section-title::after {
            content: "";
            display: block;
            width: 80px;
            height: 3px;
            background-color: #0056B3;
            margin: 15px auto 0;
        }
        /* Introduction area */
        .intro-area {
            padding: 60px 0;
            background-color: #fff;
        }
        .intro-content {
            font-size: 1.1rem;
            padding: 20px 0;
            text-align: left; /* Left align content */
        }
        .intro-content p {
            font-size: 1.05rem;
            margin-bottom: 15px;
            color: #555;
        }
        /* Video container - smaller size for coordination */
        .intro-video {
            border-radius: 8px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            width: 100%;
            max-width: 570px; /* Limit max width */
            height: 570px;
            margin: 0 auto; /* Center video */
        }
        /* Business area */
        .business-area {
            padding: 60px 0;
            background-color: #f5f7fa;
        }
        .business-card {
            height: 400px;
            background-color: #fff;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.08);
            padding: 30px 20px;
            margin-bottom: 30px;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .business-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 20px rgba(0,0,0,0.12);
        }
        .business-card .icon {
            width: 40px;
            height: 40px;
            margin-bottom: 20px;
        }
        .business-card h3 {
            font-size: 1.4rem;
            font-weight: 600;
            margin-bottom: 15px;
            color: #222;
        }
        .business-card p {
            color: #666;
            font-size: 1rem;
        }
        /* Advantage area */
        .advantage-area {
            padding: 60px 0;
            background-color: #fff;
        }
        .advantage-item {
            text-align: center;
            padding: 20px;
        }
        .advantage-item .icon {
            width: 45px;
            height: 45px;
            margin-bottom: 20px;
        }
        .advantage-item h4 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 10px;
            color: #222;
        }
        .advantage-item p {
            color: #666;
            font-size: 0.95rem;
        }
        /* Philosophy area */
        .philosophy-area {
            padding: 60px 0;
            background-color: #0056B3;
            color: #fff;
            text-align: center;
        }
        .philosophy-area h2 {
            color: #fff;
        }
        .philosophy-area .section-title::after {
            background-color: #fff;
        }
        .philosophy-content {
            font-size: 1.2rem;
            font-weight: 500;
            max-width: 1200px;
            margin: 0 auto;
            line-height: 1.8;
        }

        /* Responsive adaptation */
        @media (max-width: 768px) {
            .section-title h2 {
                font-size: 1.6rem;
            }
            .intro-video {
                margin-top: 30px;
                max-width: 100%; /* Full width on mobile */
            }
            .business-card {
                padding: 20px 15px;
            }
            .philosophy-content {
                font-size: 1.05rem;
            }
        }