/* Base theme + animated background */
:root { --bg:#0b0d12; --panel:#121620; --muted:#1a2030; --text:#e8ebf3; --sub:#b8c0d9; --brand:#7aa2ff; --shadow:rgba(0,0,0,.4); --radius:16px; --maxw:1100px; }
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans;color:var(--text);
  background: radial-gradient(1200px 600px at 80% -10%, rgba(122,162,255,.18), transparent 60%),
             radial-gradient(900px 500px at -5% 10%, rgba(180,107,255,.15), transparent 55%),
             var(--bg);
  line-height:1.55; animation:bgfloat 24s linear infinite;}
@keyframes bgfloat{
  0%{background-position: 0 0, 0 0, 0 0}
  50%{background-position: 0 -30px, -20px 20px, 0 0}
  100%{background-position: 0 0, 0 0, 0 0}
}
a{color:var(--brand);text-decoration:none} a:hover{text-decoration:underline}
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.section{padding:72px 0}
.grid2{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.card{background:linear-gradient(180deg, rgba(255,255,255,.03), rgba(255,255,255,.02));border:1px solid rgba(255,255,255,.06);border-radius:var(--radius);box-shadow:0 10px 30px var(--shadow);transition: transform .18s ease, box-shadow .25s ease;}
.card:hover { transform: translateY(-2px); box-shadow:0 16px 40px var(--shadow); }
.card-body{padding:20px}
.btns{display:flex;flex-wrap:wrap;gap:10px}
.btn{display:inline-flex;align-items:center;gap:8px;background:linear-gradient(180deg, var(--brand), #5e84ff);color:#0b0d12;font-weight:700;border:0;padding:10px 14px;border-radius:999px;cursor:pointer;box-shadow:0 6px 16px rgba(122,162,255,.35);transition: transform .18s ease;}
.btn.secondary{background:linear-gradient(180deg,#2a3145,#1d2333);color:#e8ebf3;border:1px solid rgba(255,255,255,.06)}
.btn:hover { transform: translateY(-1px) }
.nav{position:sticky;top:0;z-index:50;backdrop-filter:saturate(1.2) blur(10px);background:rgba(11,13,18,.6);border-bottom:1px solid rgba(255,255,255,.06)}
.nav .inner{display:flex;align-items:center;justify-content:space-between;min-height:68px}
.nav .brand{display:flex;align-items:center;gap:10px;color:var(--text);font-weight:800}
.nav .links{display:flex;gap:28px;align-items:center;flex-wrap:wrap}
.nav .links a{padding:8px 12px;border-radius:10px}
.nav .links a:hover, .nav .links a.active{background:rgba(255,255,255,.06);text-decoration:none}
.brand-logo { border-radius:8px; box-shadow: 0 0 0 1px rgba(255,255,255,.08), 0 4px 12px rgba(0,0,0,.35); }
.hero{padding:96px 0 48px}
.hero-logo { display:block; margin:10px 0 12px; border-radius:14px; box-shadow:0 6px 18px rgba(0,0,0,.35); }
h1{ line-height:1.2; margin: 0 0 8px }
.lead{max-width:720px;color:var(--sub); margin: 6px 0 16px }
.break{display:block}
.authors{margin-top:18px}
.row-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:8px}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.chip{background:#1a2136;color:#d5dbf1;padding:6px 10px;border-radius:999px;font-size:12px;border:1px solid rgba(255,255,255,.06)}
.hidden{display:none}
.stats{display:grid;gap:12px;grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}
.stat .k{font-size:26px;font-weight:800}
.stat .l{color:var(--sub);font-size:12px}
.subhead{margin-top:24px}
.list{margin:0 0 0 18px;padding:0;display:grid;gap:10px}
.scroll{overflow:auto}
.media-img{width:100%;height:auto;border-radius:12px;border:1px solid rgba(255,255,255,.08);box-shadow:0 10px 25px var(--shadow);background:linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.03));padding:10px}
.media-img.framed{background: radial-gradient(120px 80px at 20% 10%, rgba(122,162,255,.12), transparent 40%), rgba(255,255,255,.04); border:1px solid rgba(255,255,255,.10);}
/* Stack skills cards vertically */
#skills .grid2{ grid-template-columns: 1fr; gap: 24px; }
table{width:100%;border-collapse:collapse}
thead{background:#161b2a;position:sticky;top:64px;z-index:10}
th,td{padding:12px 14px;text-align:left;border-bottom:1px solid rgba(255,255,255,.06);white-space:nowrap}
tbody tr:nth-child(odd){background:rgba(255,255,255,.02)}
tbody.baseline tr{background:rgba(255,255,255,.04)}
tbody.baseline tr td{font-weight:600}
.controls{display:flex;align-items:center;gap:8px;margin-bottom:10px}
.controls .sep{opacity:.4}
.badge{display:inline-flex;gap:8px;align-items:center;padding:6px 10px;border-radius:999px;background:#182036;color:#a9b4d7;font-size:12px;border:1px solid rgba(255,255,255,.06)}
.muted{color:var(--sub)}
.small{font-size:12px}
pre.bib{white-space:pre-wrap;font-size:12px}
.copy-status{margin-left:10px;opacity:0;transition:opacity .3s ease}
.copy-status.visible{opacity:1}
footer{padding:40px 0;color:var(--sub);font-size:12px}
/* Reveal on scroll */
.reveal-on-scroll{opacity:0;transform:translateY(12px);transition:opacity .5s ease, transform .5s ease}
.reveal-on-scroll.revealed{opacity:1;transform:none}
.delay-1{transition-delay:.08s}.delay-2{transition-delay:.16s}.delay-3{transition-delay:.24s}
/* Medal animation */
.medal{display:inline-block;margin-left:6px;transform:scale(.8);animation:medal-pop .35s ease-out forwards}
@keyframes medal-pop{from{transform:scale(.8);opacity:.6}to{transform:scale(1);opacity:1}}
/* Back to top */
#to-top{position:fixed;right:18px;bottom:18px;border:1px solid rgba(255,255,255,.16);background:#1a2136;color:#e8ebf3;border-radius:999px;padding:10px 12px;cursor:pointer;box-shadow:0 6px 18px rgba(0,0,0,.35);display:none}
#to-top.show{display:block}
@media (prefers-reduced-motion: reduce) {
  body{animation:none}
  .card, .btn, .reveal-on-scroll{transition:none!important}
  .reveal-on-scroll{opacity:1;transform:none}
}
@media (max-width:800px){ th,td{white-space:normal} }

/* Centered hero with small logo, big title, and subtitle */
.hero-center{display:flex;flex-direction:column;align-items:center;text-align:center}
.hero-mark{width:76px;height:auto;border-radius:12px;box-shadow:0 6px 18px rgba(0,0,0,.35);margin:6px 0 10px;background:rgba(255,255,255,.05);padding:6px;border:1px solid rgba(255,255,255,.08)}
.hero-title{font-size:56px;font-weight:850;margin:6px 0 8px;letter-spacing:.5px}
.hero-sub{font-size:22px;color:var(--sub);max-width:950px;margin:0 0 16px}
@media (max-width: 720px){
  .hero-title{font-size:36px}
  .hero-sub{font-size:18px}
  .hero-mark{width:60px}
}
/* Keep two-column grid for first row */
.grid2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

/* Make Examples card span both columns (full combined width) */
.examples-card {
  grid-column: 1 / -1;
}

.examples-card img {
  display: block;
  max-width: 100%;
  height: auto;
}