body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #ffffff;
    margin: 0;
    padding: 0;
    color: #222;
}
header {
    text-align: center;
    padding: 20px;
    background: #f4f4f4;
}
.logo {
    max-width: 180px;
}
.slogan {
    font-size: 1.5rem;
    color: #cc0000;
    margin-top: 10px;
}
nav {
    background: #003366;
    color: white;
    padding: 10px;
    text-align: center;
}
nav a {
    color: white;
    margin: 0 15px;
    text-decoration: none;
    font-weight: bold;
}
main {
    padding: 20px;
}
footer {
    background: #f4f4f4;
    text-align: center;
    padding: 10px;
    font-size: 0.9rem;
    margin-top: 20px;
}
form {
    max-width: 500px;
    margin: auto;
}
input, textarea {
    width: 100%;
    padding: 10px;
    margin-bottom: 10px;
}
input[type="submit"] {
    background: #cc0000;
    color: white;
    border: none;
    cursor: pointer;
}