:root {
  --bg: #ffffff;
  --bg-soft: #f7f7f9;
  --bg-accent: #fff7ed;
  --text: #1a1a1f;
  --text-soft: #4a4a55;
  --text-muted: #6b6b75;
  --border: #e6e6ec;
  --primary: #5b4fb8;
  --primary-soft: #efeafb;
  --traits: #2d7a4f;
  --traits-soft: #e8f3ec;
  --danger: #b3261e;
  --warn: #c2410c;
  --max: 1040px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", "Helvetica Neue", Helvetica, Arial, system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--primary);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .15s ease;
}
a:hover { border-bottom-color: var(--primary); }

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

/* Hero */
.hero {
  padding: 64px 0 32px;
  text-align: center;
  border-bottom: 1px solid var(--border);
}
.hero .venue {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--primary);
  background: var(--primary-soft);
  padding: 4px 10px;
  border-radius: 999px;
  margin-bottom: 18px;
}
.hero h1 {
  font-size: clamp(28px, 4.2vw, 44px);
  line-height: 1.15;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 6px;
}
.hero h1 em {
  font-style: italic;
  color: var(--traits);
  font-weight: 700;
}
.hero .subtitle {
  font-size: 17px;
  color: var(--text-muted);
  margin: 10px auto 28px;
  max-width: 720px;
}

.authors {
  margin: 22px 0 6px;
  font-size: 17px;
  line-height: 1.9;
}
.authors .author { white-space: nowrap; }
.authors .equal {
  color: var(--text-muted);
  font-size: 13px;
  vertical-align: super;
}
.affil {
  color: var(--text-muted);
  font-size: 14.5px;
  margin-top: 8px;
}
.equal-note {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}

.links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin: 28px 0 8px;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: 999px;
  background: #1a1a1f;
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  border: 1px solid #1a1a1f;
  transition: transform .12s ease, background .15s ease;
}
.btn:hover { transform: translateY(-1px); background: #2f2f3a; border-bottom-color: #2f2f3a; }
.btn.ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}
.btn.ghost:hover { background: var(--bg-soft); border-bottom-color: var(--border); }
.btn .icon { width: 16px; height: 16px; }
.btn.disabled {
  opacity: .55;
  cursor: not-allowed;
  pointer-events: none;
}

/* Sections */
section { padding: 56px 0; border-bottom: 1px solid var(--border); }
section:last-of-type { border-bottom: none; }
section h2 {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 18px;
}
section h3 {
  font-size: 18px;
  font-weight: 600;
  margin: 28px 0 8px;
}
section p { color: var(--text-soft); margin: 0 0 14px; }

/* Teaser */
.teaser {
  background: var(--bg-soft);
  text-align: center;
}
.teaser img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 1px 2px rgba(0,0,0,0.04);
}
.teaser figcaption {
  font-size: 14.5px;
  color: var(--text-muted);
  margin-top: 16px;
  max-width: 820px;
  margin-left: auto;
  margin-right: auto;
  text-align: left;
}

/* TL;DR cards */
.tldr-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 14px;
  margin-top: 8px;
}
.card {
  padding: 18px 18px 16px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
}
.card .card-icon {
  font-size: 18px;
  margin-bottom: 6px;
  color: var(--primary);
  font-weight: 700;
}
.card h4 {
  margin: 0 0 4px;
  font-size: 15.5px;
  font-weight: 600;
}
.card p {
  margin: 0;
  font-size: 14px;
  color: var(--text-muted);
}

/* Highlight callout */
.callout {
  margin: 20px 0;
  padding: 18px 20px;
  background: var(--bg-accent);
  border-left: 3px solid var(--warn);
  border-radius: 4px;
  font-size: 15px;
  color: var(--text);
}
.callout strong { color: var(--warn); }

/* Traits grid */
.traits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 10px;
  margin: 14px 0 6px;
}
.trait {
  padding: 12px 14px;
  background: var(--traits-soft);
  border: 1px solid #cfe5d6;
  border-radius: 8px;
  font-size: 14px;
  color: #1f4d33;
  font-weight: 500;
}

/* Result tables */
.table-wrap {
  overflow-x: auto;
  margin: 12px 0 6px;
  border: 1px solid var(--border);
  border-radius: 8px;
}
table.results {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
  font-variant-numeric: tabular-nums;
}
table.results th, table.results td {
  padding: 9px 12px;
  text-align: right;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
table.results th.col-model,
table.results th.col-variant,
table.results td.model-name,
table.results td.variant {
  text-align: left;
}
table.results thead th {
  background: var(--bg-soft);
  font-weight: 600;
  font-size: 12.5px;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--text-muted);
}
table.results tbody td.model-name { font-weight: 600; }
table.results td.delta-up { color: var(--traits); font-weight: 600; }
table.results td.delta-down { color: var(--danger); font-weight: 600; }
table.results tbody tr.divider td { border-top: 2px solid var(--border); }
.table-caption {
  font-size: 13.5px;
  color: var(--text-muted);
  margin: 8px 2px 18px;
}

/* Figure */
figure.inline-fig {
  margin: 18px auto;
  text-align: center;
}
figure.inline-fig img {
  max-width: 100%;
  border-radius: 8px;
  border: 1px solid var(--border);
}
figure.inline-fig figcaption {
  font-size: 13.5px;
  color: var(--text-muted);
  margin-top: 10px;
  text-align: left;
}

/* BibTeX */
pre.bibtex {
  background: #0f0f14;
  color: #d6d6dc;
  padding: 18px 20px;
  border-radius: 8px;
  font-family: "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace;
  font-size: 13px;
  overflow-x: auto;
  line-height: 1.55;
}

/* Footer */
footer {
  padding: 28px 0 44px;
  text-align: center;
  color: var(--text-muted);
  font-size: 13.5px;
}
footer a { color: var(--text-muted); border-bottom: 1px dotted var(--text-muted); }

/* Responsive */
@media (max-width: 600px) {
  .hero { padding: 40px 0 24px; }
  section { padding: 40px 0; }
  .btn { padding: 7px 13px; font-size: 13.5px; }
}