body{
background: linear-gradient(135deg,#8f5cff,#2ee6a6);
font-family:Arial, Helvetica, sans-serif;
margin:0;
color:#111;
}

.container{
max-width:900px;
margin:auto;
padding:40px 20px;
text-align:center;
}

h1{
font-size:40px;
margin-bottom:10px;
color:#111;
}

.subtitle{
opacity:0.8;
margin-bottom:30px;
}

.hero{
background:white;
padding:40px;
border-radius:16px;
margin-bottom:40px;
box-shadow:0 10px 30px rgba(0,0,0,0.1);
}

.refbox{
display:flex;
justify-content:center;
align-items:center;
gap:10px;
margin:20px 0;
}

#refcode{
background:#f2f2f2;
padding:12px 24px;
border-radius:10px;
font-size:18px;
}

button{
background:#6c5cff;
border:none;
padding:10px 20px;
border-radius:10px;
color:white;
cursor:pointer;
font-weight:bold;
}

.signup{
display:inline-block;
margin-top:20px;
background:#20c997;
color:white;
padding:14px 28px;
border-radius:10px;
text-decoration:none;
font-weight:bold;
}

.article{
text-align:left;
background:white;
padding:30px;
border-radius:16px;
box-shadow:0 10px 30px rgba(0,0,0,0.1);
}

footer{
margin-top:40px;
opacity:0.8;
color:#111;
}