body {
            font-family: 'Open Sans', sans-serif;
            background-color: #f9f9f9;
            margin: 0;
            padding: 0;
            line-height: 1.6;
        }

        .container {
            width: 90%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px;
        }

        .header {
            text-align: center;
            padding: 20px 0;
            color: #333;
        }

        .header h1 {
            font-size: 36px;
        }

        .image-section {
            text-align: center;
            margin-bottom: 20px;
        }

        .image-section img {
            width: 100%;
            aspect-ratio: 16 / 9; /* 固定比例为16:9 */
            border-radius: 10px;
            object-fit: cover; /* 保持图像的填充 */
        }

        .text-section {
            margin: 20px 0;
        }

        .text-section h2 {
            font-size: 28px;
            color: #333;
            margin-bottom: 10px;
        }

        .text-section p, .text-section ul {
            font-size: 16px;
            color: #555;
            margin-bottom: 15px;
        }

        footer {
            text-align: center;
            padding: 20px 0;
            color: #777;
        }