body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    line-height: 1.6;
}
header {
    background: #2c3e50;
    color: white;
    text-align: center;
    padding: 1em;
}
header .logo img {
    max-width: 150px;
}
nav ul {
    list-style: none;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
}
nav ul li {
    margin: 0 1em;
}
nav ul li a {
    color: white;
    text-decoration: none;
}
.profile-grid, .review-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1em;
    padding: 1em;
}
.profile-card, .review-grid article {
    border: 1px solid #ddd;
    padding: 1em;
    text-align: center;
    background: #f9f9f9;
}
.profile-card img {
    max-width: 100%;
    height: auto;
}
.btn {
    display: inline-block;
    padding: 0.5em 1em;
    background: #e74c3c;
    color: white;
    text-decoration: none;
    border-radius: 5px;
}
section {
    padding: 2em;
}
footer {
    background: #2c3e50;
    color: white;
    text-align: center;
    padding: 1em;
}
@media (max-width: 768px) {
    .profile-grid, .review