body{
font-family:system-ui;
margin:0;
background:#0f0f0f;
color:#fff;
}

.header{
background:#111;
border-bottom:1px solid #222;
}

.container{
max-width:1100px;
margin:auto;
display:flex;
justify-content:space-between;
align-items:center;
padding:20px;
}

nav a{
margin-left:20px;
color:#bbb;
text-decoration:none;
}

.hero{
text-align:center;
padding:120px 20px;
}

.btn{
background:#16a34a;
padding:12px 24px;
border-radius:8px;
color:#fff;
text-decoration:none;
}

.section{
padding:60px 20px;
text-align:center;
}

.grid{
display:grid;
grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
gap:20px;
max-width:1000px;
margin:auto;
}

.card{
background:#1a1a1a;
padding:30px;
border-radius:10px;
}