body{
font-family:Arial, Helvetica, sans-serif;
margin:0;
background:#f5f7fa;
color:#333;
}

header{
background:#0f172a;
color:white;
padding:40px;
text-align:center;
}

nav{
background:#1e293b;
text-align:center;
padding:12px;
}

nav a{
color:white;
margin:0 15px;
text-decoration:none;
font-weight:bold;
}

.hero{
padding:80px 20px;
text-align:center;
background:white;
}

.section{
padding:60px 20px;
max-width:1100px;
margin:auto;
}

.cards{
display:flex;
gap:30px;
flex-wrap:wrap;
justify-content:center;
}

.card{
background:white;
padding:25px;
border-radius:10px;
box-shadow:0 4px 12px rgba(0,0,0,0.08);
width:260px;
}

footer{
background:#0f172a;
color:#ddd;
text-align:center;
padding:30px;
}