/* 公告栏样式 */
        .announcement {
            width: 100%;
            background-color: #fff;
            padding: 1rem;
            margin: 2rem auto;
            max-width: 1200px;
            border-radius: 8px;
            box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
            text-align: center;
            border-left: 4px solid #4CAF50;
        }
    

        /* 主容器 */
        .container {
            max-width: 1200px;
            margin: 1rem auto;
            padding: 0 1rem;
            width: 100%;
        }
        
        .container h2 {
            text-align: center;
            margin-bottom: 2rem;
            font-size: 2rem;
            color: #2c3e50;
            position: relative;
        }
        
        .container h2::after {
            content: '';
            display: block;
            width: 80px;
            height: 3px;
            background: linear-gradient(90deg, #1e88e5, #4CAF50);
            margin: 0.5rem auto 0;
        }
        
        .article-content {
            line-height: 2.5rem;
            padding: 2rem;
        }


        @media (max-width: 768px) {
            .package-selection {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 480px) {
            .package-card {
                padding: 1rem;
            }

            .announcement {
                padding: 0.8rem;
                font-size: 0.7rem;
            }
        }