body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: #f0f2f5;
    color: #333;
}
header {
    background: #003366;
    color: white;
    text-align: center;
    padding: 30px 10px;
}
header h1 {
    margin: 0;
    font-size: 2em;
}
header p {
    margin: 5px 0 0 0;
    font-size: 1.1em;
}
nav {
    background: #0055a5;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
}
nav a {
    color: white;
    text-decoration: none;
    padding: 15px 25px;
    font-weight: bold;
}
nav a:hover {
    background: #004080;
}
section {
    padding: 50px 20px;
    max-width: 1000px;
    margin: auto;
}
section h2 {
    color: #003366;
    margin-bottom: 20px;
}
ul {
    list-style-type: square;
    padding-left: 20px;
}
.btn-whatsapp {
    display: inline-block;
    background: #25d366;
    color: white;
    padding: 12px 25px;
    text-decoration: none;
    border-radius: 6px;
    font-weight: bold;
    margin-top: 15px;
}
.btn-whatsapp:hover {
    background: #1ebe5d;
}
form {
    display: flex;
    flex-direction: column;
    gap: 15px;
    max-width: 500px;
    margin: auto;
}
input, textarea {
    padding: 10px;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-size: 1em;
    width: 100%;
}
input[type="submit"] {
    background: #003366;
    color: white;
    font-weight: bold;
    cursor: pointer;
}
input[type="submit"]:hover {
    background: #0055a5;
}
.qr-code {
    text-align: center;
    margin-top: 20px;
}
.qr-code img {
    width: 150px;
    height: 150px;
}
iframe {
    width: 100%;
    height: 300px;
    border: none;
    margin-top: 20px;
}
footer {
    background: #003366;
    color: white;
    text-align: center;
    padding: 25px 10px;
}