/* ---------- Minimal, modern academic site ---------- */
:root{
  /* Light theme palette */
  --bg:#f6f8f9;        /* page background */
  --panel:#f8f9fb;     /* nav/header background */
  --card:#ffffff;      /* cards and list items */
  --text:#111827;      /* primary text (near-black) */
  --muted:#323742;     /* secondary text (gray-500) */
  --accent:#457ecf;    /* primary accent (blue-600) */
  --accent-2:#ffffff;  /* secondary accent (cyan-500) */
  --ring:#e5e7eb;      /* borders/dividers (gray-200) */
  --shadow: 0 10px 30px rgba(0,0,0,.10); /* lighter shadow on white */
}

p{
  text-align: justify;
  text-justify: inter-word; /* mostly ignored by modern browsers, harmless */
  hyphens: auto;            /* improves spacing */
}

*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";}
a{color:var(--accent);text-decoration:none}
a:hover{color:var(--accent-2)}
img{max-width:100%;display:block}
.container{max-width:1080px;margin:0 auto;padding:24px}

.nav{
  position:sticky; top:0; z-index:10;
  backdrop-filter:saturate(180%) blur(8px);
  background: rgba(255,255,255,.9);        /* was a dark rgba(...) */
  border-bottom:1px solid var(--ring);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:10px 0;}
.brand{display:flex;align-items:center;gap:12px}
.brand .avatar{width:44px;height:44px;border-radius:9999px;border:1px solid rgba(255,255,255,.1);box-shadow:var(--shadow);}
.brand .name{font-size:18px;font-weight:700}
.menu{display:flex;gap:18px;flex-wrap:wrap}
.menu a{padding:8px 10px;border-radius:10px}
.menu a.active, .menu a:hover{background:rgba(148,163,184,.1)}

.hero{display:grid;grid-template-columns:1.2fr .8fr;gap:28px;align-items:center;margin-top:24px}
.card{background:linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.02));border:1px solid rgba(148,163,184,.15);border-radius:18px;padding:22px;box-shadow:var(--shadow)}
.kicker{font-size:14px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.h1{font-size:40px;line-height:1.1;margin:6px 0 12px;font-weight:800}
.lead{ font-size:18px; color: var(--muted); line-height:1.6 }

.grid{display:grid;gap:18px}
.grid.cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid.cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}

.badge{font-size:12px;color:#0f172a;background:linear-gradient(90deg,var(--accent),var(--accent-2));padding:6px 10px;border-radius:9999px;display:inline-block;font-weight:700}

.section{margin:38px 0}
.section h2{margin:0 0 10px;font-size:24px}
.section p{color:var(--muted)}

.list{display:grid;gap:14px}
.item{padding:16px;border:1px solid rgba(148,163,184,.12);border-radius:14px;background:var(--card)}
.item h3{margin:0 0 6px}
.item .meta{color:var(--muted);font-size:14px}
.item .paper-img{
  width:100%;
  height:auto;
  display:block;
  border-radius:14px;
  border:1px solid var(--ring);
  box-shadow: var(--shadow);
  margin:12px 0 8px;
  object-fit:cover;
}

.footer{margin-top:40px;padding:24px 0;border-top:1px solid rgba(148,163,184,.15);color:var(--muted);font-size:14px}
.social{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 14px;border:1px solid rgba(148,163,184,.25);border-radius:12px}
.btn:hover{border-color:var(--accent)}

blockquote{margin:0;padding:12px 16px;border-left:3px solid var(--accent);background:rgba(56,189,248,.06);border-radius:10px}

@media (max-width:900px){
  .hero{grid-template-columns:1fr;gap:16px}
  .grid.cols-3{grid-template-columns:1fr}
  .grid.cols-2{grid-template-columns:1fr}
  .h1{font-size:32px}
}