/* 公告栏样式 */
        .announcement {
            color: #555;
            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;
        }
        
        /* 套餐选择区域 */
        .package-selection {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 1.5rem;
            margin-top: 2rem;
        }
        
        /* 套餐卡片 */
        .package-card {
            background: white;
            border-radius: 10px;
            padding: 1.5rem;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: transform 0.3s, box-shadow 0.3s;
            text-align: center;
            border-top: 4px solid #1e88e5;
        }
        
        .package-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
        }
        
        .package-card h3 {
            font-size: 1.3rem;
            margin-bottom: 0.5rem;
            color: #2c3e50;
        }
        
        .package-card p {
            color: #7f8c8d;
            margin-bottom: 1rem;
            font-size: 0.95rem;
        }
        
        .price {
            font-size: 1.5rem;
            font-weight: bold;
            color: #e74c3c;
            margin: 1rem 0;
        }
        
        .btn {
            display: inline-block;
            background: linear-gradient(135deg, #1e88e5, #4CAF50);
            color: white;
            padding: 0.8rem 1.5rem;
            border-radius: 50px;
            font-weight: 600;
            transition: all 0.3s;
            box-shadow: 0 4px 10px rgba(30, 136, 229, 0.3);
        }
        
        .btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 15px rgba(30, 136, 229, 0.4);
        }


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

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

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