body{
font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;
margin:0;
color:#222;
line-height:1.6;
}

.hero{
height:70vh;
display:flex;
align-items:center;
justify-content:center;
position:relative;
overflow:hidden;
background:linear-gradient(120deg,#0f172a,#1e3a8a);
color:white;
text-align:center;
}

.hero-animation{
position:absolute;
width:200%;
height:200%;
background:radial-gradient(circle,rgba(255,255,255,0.08) 1px,transparent 1px);
background-size:50px 50px;
animation:move 40s linear infinite;
}

@keyframes move{
from{transform:translate(0,0)}
to{transform:translate(-200px,-200px)}
}

.hero-content{
position:relative;
z-index:2;
}

.profile{
width:240px;
height:240px;
border-radius:50%;
object-fit:cover;
border:4px solid white;
}

.tagline{
opacity:0.9;
margin-bottom:25px;
}

.buttons{
display:flex;
justify-content:center;
gap:15px;
flex-wrap:wrap;
}

.btn{
background:white;
color:#1e3a8a;
padding:10px 20px;
border-radius:6px;
text-decoration:none;
font-weight:600;
}

.btn-outline{
border:2px solid white;
color:white;
padding:8px 18px;
border-radius:6px;
text-decoration:none;
}

main{
max-width:900px;
margin:auto;
padding:60px 20px;
}

section{
margin-bottom:60px;
}

h2{
margin-bottom:20px;
border-bottom:2px solid #eee;
padding-bottom:8px;
}

.courses{
padding-left:20px;
}

#publications li{
margin-bottom:10px;
}

.publications{
display:flex;
flex-direction:column;
gap:25px;
}

.paper{
padding:20px;
border-radius:8px;
background:#fafafa;
border:1px solid #eee;
}

.paper h3{
margin-top:0;
margin-bottom:6px;
font-size:18px;
}

.authors{
margin:4px 0;
color:#444;
}

.venue{
margin:4px 0 12px 0;
color:#777;
font-size:14px;
}

.paper-links{
display:flex;
gap:10px;
}

.paper-btn{
background:#1e3a8a;
color:white;
padding:6px 14px;
border-radius:5px;
text-decoration:none;
font-size:14px;
}

.paper-btn-outline{
border:1px solid #1e3a8a;
color:#1e3a8a;
padding:6px 14px;
border-radius:5px;
text-decoration:none;
font-size:14px;
}

.paper-btn:hover{
opacity:0.9;
}

.paper-btn-outline:hover{
background:#1e3a8a;
color:white;
}

footer{
text-align:center;
padding:40px;
background:#f5f5f5;
}