*{
margin:0;
padding:0;
box-sizing:border-box;
font-family:Arial,sans-serif;
}
body{background:#f5f7fa;color:#222}
.header{
display:flex;
justify-content:space-between;
align-items:center;
padding:15px 20px;
background:#111;
color:#fff;
}
.menu-btn{font-size:24px;cursor:pointer;display:none}
.nav a{color:#fff;margin-left:20px;text-decoration:none}
.hero{
text-align:center;
padding:60px 20px;
background:linear-gradient(135deg,#4f46e5,#9333ea);
color:#fff;
}
.hero button{
margin-top:20px;
padding:12px 25px;
border:none;
border-radius:6px;
cursor:pointer;
}
.content{
display:grid;
grid-template-columns:repeat(3,1fr);
gap:20px;
padding:40px 20px;
}
.card{
background:#fff;
padding:30px;
border-radius:10px;
text-align:center;
box-shadow:0 10px 25px rgba(0,0,0,.08)
}
.footer{
text-align:center;
padding:20px;
background:#111;
color:#aaa
}
@media(max-width:768px){
.menu-btn{display:block}
.nav{
position:absolute;
top:60px;
left:0;
width:100%;
background:#111;
display:none;
flex-direction:column
}
.nav a{
padding:15px;
border-top:1px solid #222
}
.content{grid-template-columns:1fr}
}