body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: linear-gradient(to bottom, #0b1f3a, #09172c);
    color: white;
    text-align: center;
}
header {
    padding: 40px 20px 20px;
}
.logo {
    width: 120px;
    height: auto;
}
h1 {
    margin: 10px 0 0;
    font-size: 36px;
}
h2 {
    margin: 5px 0 30px;
    font-size: 20px;
    font-weight: 400;
    color: #ccc;
}
section {
    padding: 20px 30px;
    max-width: 700px;
    margin: 0 auto;
}
a {
    color: #1e90ff;
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}
footer {
    margin-top: 40px;
    padding: 20px;
    font-size: 14px;
    background-color: rgba(255, 255, 255, 0.05);
}
.product img {
    width: 120px;
    margin-top: 10px;
}