body{
  margin:0;
  font-family:Arial,Helvetica,sans-serif;
  background:#f8fafc;
  color:#0f172a;
}
.header{
  padding:20px 40px;
  background:#0f2027;
  color:#fff;
  display:flex;
  justify-content:space-between;
  align-items:center;
}
.header a{color:#fff;margin-left:20px;text-decoration:none;}
.hero{
  padding:120px 40px;
  text-align:center;
  background:linear-gradient(135deg,#0f2027,#203a43,#2c5364);
  color:#fff;
}
.btn{
  display:inline-block;
  margin-top:25px;
  padding:14px 28px;
  background:#1e88e5;
  color:#fff;
  border-radius:6px;
}
.section{padding:80px 40px;text-align:center;}
.section.dark{background:#0f172a;color:#fff;}
.grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(200px,1fr));
  gap:25px;
  margin-top:40px;
}
.card{
  padding:30px;
  background:#fff;
  border-radius:10px;
  box-shadow:0 20px 40px rgba(0,0,0,.1);
}
form{
  max-width:500px;
  margin:0 auto;
  display:grid;
  gap:15px;
}
input,textarea{
  padding:12px;
  border-radius:6px;
  border:1px solid #cbd5e1;
}
button{
  padding:14px;
  background:#1e88e5;
  color:#fff;
  border:none;
  border-radius:6px;
  cursor:pointer;
}
footer{
  padding:30px;
  background:#020617;
  color:#94a3b8;
  text-align:center;
}