/* Botón rectangular fijo */
        #promoButton {
            position: fixed;
            top: 10px;
            left: 10px;
            background-color: #ff7b00;
            color: white;
            border: none;
            padding: 10px 20px;
            font-size: 1em;
            cursor: pointer;
            border-radius: 5px;
            z-index: 1000;
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
        }

        #promoButton:hover {
            background-color: #30b300;
        }

        /* Estilos del modal */
        .modal-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.7);
            display: flex;
            justify-content: center;
            align-items: center;
            z-index: 9999;
        }

        .modal-content {
            position: relative;
            width: 80%;
            max-width: 600px;
            background: white;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
        }

        iframe {
            width: 100%;
            height: 500px;
            border: none;
        }

        /* Botón de cerrar (X) */
        .close-btn {
            position: absolute;
            top: 10px;
            right: 10px;
            background-color: #ff0000;
            color: white;
            border: none;
            border-radius: 50%;
            width: 30px;
            height: 30px;
            cursor: pointer;
            font-size: 1.5em;
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .close-btn:hover {
            background-color: #cc0000;
        }

        /* Botón verde de cerrar */