.datecontainer {
            padding: 2rem;
            border-radius: 20px;
            background-image: linear-gradient(0deg, #fbfbfb, #ffffff);
            border: 2px solid #ffffff;
            box-shadow: 0 0px 8px rgb(0 0 0 / 10%);
            max-width: 1800px;
             margin: 20px auto;

        }

        h1 {
            text-align: center;
            color: #333333;
            margin-bottom: 2rem;
            font-size: 2rem;
            font-weight: bold;
        }

        .sections {
            display: flex;
            flex-wrap: wrap;
            gap: 2rem;
            justify-content: space-between;
        }

        .section {
            flex: 1 1 45%;
            background: #fff;
            padding: 1.5rem;
            border-radius: 8px;
            box-shadow: 0 0px 8px rgb(0 0 0 / 10%);
        }

        .section-title {
            font-size: 1.25rem;
            color: #333333;
            margin-bottom: 1rem;
            border-bottom: 2px solid #e0e0e0;
            padding-bottom: 0.25rem;
            font-weight: bold;
        }

        .form-group {
            margin-bottom: 1rem;
            display: flex;
            flex-direction: column;
        }

        .form-group label {
            margin-bottom: 0.5rem;
            font-weight: 600;
            color: #555555;
        }

        .form-group input[type="number"],
        .form-group select {
            padding: 0.5rem;
            border: 1px solid #ccc;
            border-radius: 6px;
            font-size: 1rem;
            transition: border-color 0.3s;
        }

        .form-group input[type="number"]:focus,
        .form-group select:focus {
            border-color: #007BFF;
            outline: none;
        }

        .button-group {
            display: flex;
            justify-content: flex-start;
            align-items: center;
            gap: 1rem;
            margin-top: 1rem;
        }

        .button-group input[type="button"] {
            background-color: #2655ff;
            color: #ffffff;
            border: none;
            padding: 0.75rem 1.5rem;
            border-radius: 6px;
            cursor: pointer;
            font-size: 1rem;
            transition: background-color 0.3s;
        }

        .button-group input[type="button"]:hover {
            background-color: #2655ff;
        }

        .result {
            margin-top: 1rem;
            font-weight: bold;
            color: #28a745;
            min-height: 1.5rem;
        }

        #nongli {
            color: #ff5722;
            font-weight: bold;
        }

        @media (max-width: 900px) {
            .section {
                flex: 1 1 100%;
            }
        }

        @media (max-width: 600px) {
            .container {
                padding: 1rem;
            }

            h1 {
                font-size: 1.5rem;
            }

            .button-group {
                flex-direction: column;
                align-items: stretch;
            }

            .button-group input[type="button"] {
                width: 100%;
            }
        }
        
            .dataca-vip-alert {
            border: 3px solid #1e1e1e;
            background-color: #fcf8e3;
            color:#1e1e1e;
            padding: 15px;
            margin: 20px auto;
            width:100%;
            border-radius: 10px;
            text-align: center;
            display: block;
        }