:root{
  --bg: #ffffff;
  --fg: #111827;
  --muted: #4b5563;
  --muted2:#6b7280;
  --border:#e5e7eb;
  --soft:#f9fafb;
  --link:#0f766e;
  --linkHover:#115e59;
  --radius: 14px;
}

*{ box-sizing:border-box; }
html, body { height:100%; }
body{
  margin:0;
  font-family: 'Inter', ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, "Noto Sans", Arial, sans-serif;
  color:var(--fg);
  background:var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a{ color:var(--link); text-decoration:none; }
a:hover{ color:var(--linkHover); text-decoration:underline; }

.container{
  width: min(980px, calc(100% - 40px));
  margin: 0 auto;
}

.skip-link{
  position:absolute;
  left:-999px;
  top:8px;
  padding:10px 12px;
  border-radius: 10px;
  background: var(--soft);
  border:1px solid var(--border);
}
.skip-link:focus{ left:12px; z-index:1000; }

.site-header{
  position:sticky;
  top:0;
  z-index:50;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding: 14px 0;
}

.brand{
  display:flex;
  flex-direction:column;
  gap:2px;
  text-decoration:none !important;
}
.brand-title{
  font-weight: 750;
  color: var(--fg);
  letter-spacing: -0.02em;
  font-size: 20px;
  line-height: 1.15;
}
.brand-subtitle{ font-size:12px; color:var(--muted2); }

.site-nav{
  display:flex;
  align-items:center;
  gap: 12px;
}
.site-nav a{
  padding: 8px 10px;
  border-radius: 10px;
  color: var(--fg);
  text-decoration:none !important;
}
.site-nav a:hover{
  background: var(--soft);
  text-decoration:none;
}

.nav-dropdown{
  position: relative;
}
.nav-dropdown-toggle{
  border: none;
  background: transparent;
  color: var(--fg);
  padding: 8px 10px;
  border-radius: 10px;
  cursor: pointer;
  font: inherit;
}
.nav-dropdown-toggle:hover{
  background: var(--soft);
}
.nav-dropdown-menu{
  display:none;
  position:absolute;
  top: calc(100% + 10px);
  left: 0;
  background: rgba(255,255,255,0.98);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 12px 30px rgba(0,0,0,0.08);
  padding: 12px;
  min-width: 260px;
  z-index: 200;
  gap: 10px;
}
.nav-dropdown[data-open="true"] .nav-dropdown-menu{
  display: grid;
  grid-template-columns: 1fr;
}
.nav-dropdown-col{
  display:flex;
  flex-direction:column;
  gap: 6px;
  padding: 0 6px;
}
.nav-dropdown-title{
  font-weight: 700;
  font-size: 13px;
  color: var(--fg);
  margin-bottom: 2px;
}
.nav-dropdown-preprints{
  margin-top: 4px;
  padding-top: 10px;
  border-top: 1px solid var(--border);
}
.nav-dropdown-menu a{
  padding: 6px 8px;
  border-radius: 10px;
  color: var(--fg);
  text-decoration:none !important;
}
.nav-dropdown-menu a:hover{
  background: var(--soft);
  text-decoration:none;
}

.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:42px;
  height:42px;
  border-radius: 12px;
  border:1px solid var(--border);
  background: var(--bg);
  cursor:pointer;
}
.nav-toggle-lines{
  width:18px;
  height:12px;
  position:relative;
}
.nav-toggle-lines::before,
.nav-toggle-lines::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  height:2px;
  border-radius: 99px;
  background: var(--fg);
}
.nav-toggle-lines::before{ top:1px; }
.nav-toggle-lines::after{ bottom:1px; }

.page{
  padding: 34px 0 60px;
}

h1, h2, h3{
  letter-spacing: -0.02em;
}
h1{ font-size: clamp(28px, 3.2vw, 40px); margin: 0 0 10px; }
h2{ font-size: 20px; margin: 26px 0 10px; }
h3{ font-size: 16px; margin: 18px 0 8px; }
p{ margin: 0 0 12px; line-height:1.65; color: #111827; }
small{ color: var(--muted2); }

.lede{ color: var(--muted); max-width: 72ch; }
.muted{ color: var(--muted); }

.panel{
  border:1px solid var(--border);
  border-radius: var(--radius);
  background: var(--soft);
  padding: 16px;
}

.grid{
  display:grid;
  gap:14px;
}
.grid-2{ grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3{ grid-template-columns: repeat(3, minmax(0, 1fr)); }

.highlight-grid{
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 12px;
}
.highlight-item{
  display:block;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow:hidden;
  background: var(--bg);
}
.highlight-item img{
  width: 100%;
  height: auto;
  display:block;
}
@media (max-width: 760px){
  .highlight-grid{ grid-template-columns: 1fr; }
}

.news-list{
  padding-left: 1.1rem;
  margin: 10px 0 0;
  line-height: 1.65;
}
.news-list li{
  margin: 0 0 6px;
  overflow-wrap: anywhere;
}
.news-date{
  color: var(--muted2);
  margin-right: 6px;
  white-space: nowrap;
}
.tile{
  display:block;
  border:1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  padding: 16px;
  color: inherit;
  text-decoration:none !important;
}
.tile:hover{
  background: var(--soft);
}

.site-footer{
  border-top:1px solid var(--border);
  background: var(--bg);
  padding: 18px 0;
}
.footer-inner{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap: 14px;
}
.footer-brand{ font-weight:700; }
.footer-muted{ font-size:12px; color: var(--muted2); margin-top: 2px; }
.footer-right{ display:flex; align-items:center; gap: 12px; flex-wrap:wrap; justify-content:flex-end; }

/* Modal for publication images */
.modal{
  display:none;
  position:fixed;
  inset:0;
  background: rgba(0,0,0,0.84);
  z-index:1000;
  place-items:center;
  padding: 24px;
}
.modal-content{
  max-width: min(900px, 92vw);
  max-height: 86vh;
  width:auto;
  height:auto;
  border-radius: 10px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.4);
}
.modal-close{
  position: fixed;
  top: 14px;
  right: 18px;
  border: none;
  background: transparent;
  color: rgba(255,255,255,0.92);
  font-size: 34px;
  cursor:pointer;
}
.modal-close:hover{ color: #ffffff; }

/* Publications list: keep existing markup readable */
ol.pub{
  list-style: none;
  counter-reset: item;
  padding-left: 0;
  margin: 0;
  line-height: 1.35em;
}
ol.pub>li{
  padding-left: 0;
  padding-bottom: 1em;
  counter-increment: item;
}

/* DAIR-like publications */
.pub-section-title{
  margin: 26px 0 10px;
  font-size: 18px;
  font-weight: 600;
  color: var(--fg);
}
.pub-list{
  margin: 0;
  padding-left: 1.25rem; /* keep numbers */
}
.pub-item{
  margin: 0 0 14px;
  padding: 0;
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: 14px;
  align-items: start;
}
.pub-thumb{
  border: 1px solid var(--border);
  background: var(--bg);
  padding: 0;
  border-radius: 10px;
  cursor: pointer;
  overflow: hidden;
}
.pub-thumb img{
  width: 100%;
  height: auto;
  display: block;
}
.pub-main{ min-width: 0; }
.pub-title{
  font-weight: 600;
  color: var(--fg);
  line-height: 1.35;
  margin-bottom: 2px;
  overflow-wrap: anywhere;
  word-break: normal;
}
.pub-title a{ color: inherit; text-decoration: none; }
.pub-title a:hover{ color: var(--linkHover); text-decoration: underline; }
.pub-authors{
  color: var(--muted);
  font-size: 16px;
  line-height: 1.5;
  margin-bottom: 2px;
  overflow-wrap: anywhere;
}
.pub-author-self{
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 2px;
}
.pub-venue{
  color: var(--muted2);
  font-size: 16px;
  line-height: 1.5;
  margin-bottom: 6px;
  overflow-wrap: anywhere;
}
.pub-remark{ color: var(--muted2); }
.pub-award{
  font-size: 15px;
  color: #92400e;
  margin: 6px 0 0;
  font-weight: 600;
}
.pub-links{
  font-size: 14px;
  color: var(--muted);
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}
.pub-links a{
  color: var(--link);
  text-decoration: none;
}
.pub-links a:hover{
  color: var(--linkHover);
  text-decoration: underline;
}
.pub-link-sep{
  color: var(--border);
}

@media (max-width: 760px){
  .pub-item{
    grid-template-columns: 1fr;
  }
  .pub-thumb{
    width: min(320px, 100%);
  }
}

/* People */
.people-group{ margin-top: 18px; }
.people-grid{
  display:grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}
.person{
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  padding: 14px;
  display:block;
}
.person img{
  width: 70%;
  height: 220px;
  object-fit: cover;
  border-radius: 12px;
  border: 1px solid var(--border);
  margin-bottom: 10px;
}
.person-name{ font-weight:700; margin:0 0 4px; }
.person-role{ font-size: 14px; color: var(--muted2); margin:0 0 4px; }
.person-affiliation{ font-size: 14px; color: var(--muted2); margin:0 0 6px; line-height: 1.45; }
.person-interest{ font-size: 13px; color: var(--muted); margin:0 0 8px; line-height: 1.55; }
.person-links{ font-size: 14px; color: var(--muted); display:flex; gap:10px; flex-wrap:wrap; }
.person-bio{ font-size: 14px; color: var(--muted); margin: 8px 0 0; line-height: 1.55; }

@media (max-width: 980px){
  .people-grid{ grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 760px){
  .nav-toggle{ display:inline-flex; }
  .site-nav{
    position:absolute;
    right:20px;
    top: 62px;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:6px;
    padding:10px;
    width: min(240px, calc(100vw - 40px));
    border-radius: 16px;
    border: 1px solid var(--border);
    background: rgba(255,255,255,0.96);
    box-shadow: 0 12px 30px rgba(0,0,0,0.10);
  }
  .site-nav[data-open="true"]{ display:flex; }
  .site-nav a{ width:100%; }
  .nav-dropdown-menu{
    position: static;
    box-shadow: none;
    min-width: 0;
    padding: 10px;
    margin-top: 8px;
  }
  .nav-dropdown[data-open="true"] .nav-dropdown-menu{
    grid-template-columns: 1fr;
  }
  .footer-inner{ flex-direction:column; }
  .footer-right{ justify-content:flex-start; }
  .people-grid{ grid-template-columns: 1fr; }
}