* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: url('../images/background.jpg') no-repeat center center fixed;
    background-size: cover;
    color: #003b46;
    line-height: 1.6;
}
header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: rgba(0, 96, 100, 0.9);
    padding: 15px 30px;
    flex-wrap: wrap;
}
.logo {
    height: 70px;
    margin-bottom: 10px;
}
nav ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}
nav ul li a {
    color: #ffffff;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s;
}
nav ul li a:hover {
    color: #e0f7fa;
}
.hero img {
    width: 100%;
    height: 350px;
    object-fit: cover;
    display: block;
}
main {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
    padding: 40px 5%;
}
.tile {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 10px;
    overflow: hidden;
    text-align: center;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    transition: transform 0.2s ease-in-out;
}
.tile:hover {
    transform: translateY(-5px);
}
.tile img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-bottom: 2px solid #ddd;
}
.tile h2 {
    padding: 15px;
    font-size: 1.2rem;
}
footer {
    background-color: rgba(0, 77, 64, 0.95);
    color: #ffffff;
    text-align: center;
    padding: 15px;
    font-size: 0.9rem;
}
@media (max-width: 600px) {
    header {
        flex-direction: column;
        text-align: center;
    }
    .logo {
        margin-bottom: 15px;
    }
}