    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: #f5f5f5;
            padding: 20px;
        }
        .container {
            max-width: 890px;
            margin: 0 auto;
            background: white;
            padding: 10px;
            border-radius: 10px;
            box-shadow: 0 0 20px rgba(0,0,0,0.1);
        }
        h1 {
            color: #2c3e50;
            text-align: center;
            margin-bottom: 30px;
            border-bottom: 3px solid #3498db;
            padding-bottom: 15px;
        }
        .curso-info {
            background: #ecf0f1;
            padding: 20px;
            border-radius: 8px;
            margin-bottom: 30px;
        }
        .curso-info h2 {
            color: #2c3e50;
            margin-bottom: 10px;
        }
        .curso-info ul {
            list-style: none;
            padding: 0;
        }
        .curso-info ul li {
            padding: 5px 0;
            border-bottom: 1px solid #dce1e3;
        }
        .curso-info ul li:last-child {
            border-bottom: none;
        }
        .curso-info .descarga {
            display: inline-block;
            margin-top: 15px;
            padding: 10px 20px;
            background: #3498db;
            color: white;
            text-decoration: none;
            border-radius: 5px;
        }
        .curso-info .descarga:hover {
            background: #2980b9;
        }
        .form-group {
            margin-bottom: 20px;
        }
        label {
            display: block;
            font-weight: 600;
            margin-bottom: 5px;
            color: #2c3e50;
        }
        input[type="text"],
        input[type="tel"],
        input[type="file"] {
            width: 90%;
            padding: 10px;
            border: 2px solid #ddd;
            border-radius: 5px;
            font-size: 16px;
        }
        input[type="text"]:focus,
        input[type="tel"]:focus {
            border-color: #3498db;
            outline: none;
        }
        input[type="file"] {
            padding: 8px;
            background: #f9f9f9;
        }
        input[type="checkbox"] {
            width: 20px;
            height: 20px;
            margin-right: 10px;
        }
        .checkbox-group {
            display: flex;
            align-items: center;
            margin: 20px 0;
        }
        .checkbox-group label {
            margin-bottom: 0;
            cursor: pointer;
        }
        .info-extra {
            background: #fef9e7;
            padding: 20px;
            border-left: 4px solid #f39c12;
            margin: 30px 0;
            border-radius: 5px;
        }
        .info-extra p {
            margin-bottom: 10px;
            line-height: 1.6;
        }
        .info-extra .telefono {
            font-weight: bold;
            color: #2980b9;
        }
        .btn-submit {
            width: 100%;
            padding: 15px;
            background: #27ae60;
            color: white;
            border: none;
            border-radius: 5px;
            font-size: 18px;
            font-weight: bold;
            cursor: pointer;
            transition: background 0.3s;
        }
        .btn-submit:hover {
            background: #229954;
        }
        .error {
            color: #e74c3c;
            font-size: 14px;
            margin-top: 5px;
        }
        .success {
            background: #d5f5e3;
            color: #1a7a42;
            padding: 15px;
            border-radius: 5px;
            margin-bottom: 20px;
            text-align: center;
        }
        .error-message {
            background: #fadbd8;
            color: #922b21;
            padding: 15px;
            border-radius: 5px;
            margin-bottom: 20px;
            text-align: center;
        }
        .required {
            color: #e74c3c;
        }
        @media (max-width: 890px) {
            .container {
                padding: 20px;
            }
        }
    </style>
