:root{
  --bg:#ffffff; --text:#202124; --muted:#5f6368; --accent:#3f7a8c; --accent-dark:#2f5e6c;
  --rule:#e3e6ea; --nav-bg:rgba(255,255,255,.92);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"Lato","Helvetica Neue",Arial,sans-serif;font-size:17px;line-height:1.6;color:var(--text);background:var(--bg)}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}

/* top nav */
.nav{position:absolute;top:0;left:0;right:0;z-index:5;background:var(--nav-bg);backdrop-filter:blur(6px)}
.nav .inner{max-width:1100px;margin:0 auto;padding:10px 24px;display:flex;justify-content:flex-end;gap:26px;flex-wrap:wrap}
.nav a{color:#333;font-size:14px;letter-spacing:.2px}
.nav a.active{font-weight:700;color:#111}

/* banner */
.hero{position:relative;height:300px;background:url("assets/banner.jpg") center 42%/cover no-repeat;display:flex;align-items:center;justify-content:center}
.hero::after{content:"";position:absolute;inset:0;background:linear-gradient(rgba(255,255,255,.25),rgba(255,255,255,.05))}
.hero h1{position:relative;z-index:1;font-weight:300;font-size:46px;margin:0;color:#2b2b2b;text-align:center;padding:0 16px;letter-spacing:.5px}
.hero.tall{height:360px}
.hero.tall h1{font-size:52px}

/* layout */
.wrap{max-width:1100px;margin:0 auto;padding:40px 24px 60px}
h2{font-weight:300;font-size:32px;color:var(--accent);margin:36px 0 14px}
h2:first-child{margin-top:0}
h3{font-weight:700;font-size:19px;margin:28px 0 6px}
p{margin:0 0 12px}
.small{font-size:15px;color:var(--muted)}
hr{border:0;border-top:1px solid var(--rule);margin:36px 0}

/* home */
.home{display:grid;grid-template-columns:1fr 300px;gap:40px;align-items:start}
.home img{width:100%;border-radius:4px;box-shadow:0 2px 10px rgba(0,0,0,.12)}
.links{margin-top:28px;font-size:16px}
.links a + span{margin:0 8px;color:var(--muted)}

/* research */
.paper{margin:0 0 26px;padding-bottom:22px;border-bottom:1px solid var(--rule)}
.paper:last-child{border-bottom:0}
.paper .title{font-weight:700;font-size:17px;margin:0 0 4px}
.paper .tag{display:inline-block;font-size:13px;background:#eef3f5;color:var(--accent-dark);border-radius:3px;padding:1px 8px;margin-left:6px;vertical-align:middle}
.paper .meta{font-size:16px;color:var(--muted);margin:2px 0}
.paper .meta b{color:#333}
details{margin-top:8px}
summary{cursor:pointer;color:var(--accent);font-weight:700;font-size:15px;list-style:none;display:inline}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";margin-left:2px}
details[open] summary::after{content:"\2212"}
details .abstract{margin:10px 0 0;padding:12px 16px;background:#f7f9fa;border-left:3px solid var(--accent);font-size:15.5px;text-align:justify}
.paper .wp{font-size:15px;margin-left:14px}

/* teaching */
.course{margin:6px 0}
.awards li{margin:8px 0}
.notes{columns:2;column-gap:40px;padding-left:20px}
.notes li{break-inside:avoid;margin:4px 0}

footer{border-top:1px solid var(--rule);padding:22px 24px;text-align:center;font-size:13px;color:var(--muted)}

@media (max-width:760px){
  .home{grid-template-columns:1fr}
  .home img{max-width:280px}
  .hero{height:220px}.hero h1{font-size:30px}.hero.tall{height:260px}.hero.tall h1{font-size:34px}
  .notes{columns:1}
  .nav .inner{justify-content:center;gap:18px}
  body{font-size:16px}
}