body{
    font-family: Arial, sans-serif;
    margin:0;
    background:#f4f6f9;
}
header{
    background:#0f172a;
    color:white;
    padding:15px 40px;
    display:flex;
    justify-content:space-between;
    align-items:center;
}
header a{
    color:white;
    margin-left:15px;
    text-decoration:none;
}
.hero{
    padding:80px 40px;
    background:linear-gradient(135deg,#0f172a,#2563eb);
    color:white;
    display:flex;
    justify-content:space-between;
    align-items:center;
}
.hero img{
    width:420px;
    border-radius:12px;
}
.container{
    padding:40px;
}
.card{
    background:white;
    padding:20px;
    border-radius:12px;
    margin:10px;
    box-shadow:0 2px 10px rgba(0,0,0,0.08);
}
.grid{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
    gap:15px;
}
footer{
    background:#0f172a;
    color:white;
    text-align:center;
    padding:20px;
    margin-top:40px;
}
.btn{
    background:#10b981;
    color:white;
    padding:12px 20px;
    border-radius:8px;
    text-decoration:none;
}