body {
    margin: 0;
    font-family: 'Roboto', sans-serif;
    background-color: #F9F9F9;
    color: #333;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    background-color: #1A4F7A;
    color: white;
}

.header nav a {
    color: white;
    text-decoration: none;
    margin-left: 15px;
    font-weight: bold;
}

.header nav a:hover {
    color: #00BFA5;
}

.hero {
    text-align: center;
    padding: 60px 20px;
    background: linear-gradient(rgba(0,0,0,0.2), rgba(0,0,0,0.2)), url('assets/images/ai-banner.jpg') center/cover no-repeat;
    color: white;
    border-bottom-left-radius: 20px;
    border-bottom-right-radius: 20px;
}

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
}

.cards {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
    padding: 40px 20px;
}

.card {
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    width: 260px;
    padding: 25px;
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0,0,0,0.15);
}

.card h2 {
    margin-bottom: 10px;
    color: #1A4F7A;
}

.card p {
    font-size: 14px;
    color: #555;
    margin-bottom: 15px;
}

.btn {
    display: inline-block;
    padding: 10px 15px;
    background-color: #00BFA5;
    color: white;
    border-radius: 6px;
    text-decoration: none;
    font-weight: bold;
}

.btn:hover {
    background-color: #009881;
}

footer {
    text-align: center;
    padding: 20px;
    background-color: #1A4F7A;
    color: white;
}