/* CATok section posters — shared style (matches project page v2) */

:root {
  --bg: #ffffff;
  --fg: #0f1115;
  --fg-80: rgba(15, 17, 21, 0.8);
  --muted: #6b7280;
  --faint: #9ca3af;
  --border: #e8eaed;
  --surface: #fafbfc;
  --accent: #4f74b8;
  --accent-strong: #3c5d99;
  --accent-soft: rgba(79, 116, 184, 0.08);
  --radius: 12px;
  --radius-sm: 8px;
  --sans: 'Geist Sans', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', Arial, sans-serif;
  --mono: 'Geist Mono', ui-monospace, 'SF Mono', Menlo, monospace;
  --shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.05);
  --shadow-md: 0 4px 12px rgba(16, 24, 40, 0.06);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: #f2f3f5;
  color: var(--fg);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.65;
  letter-spacing: -0.011em;
  -webkit-font-smoothing: antialiased;
}

img, video { max-width: 100%; display: block; }
a { color: var(--accent); text-decoration: none; }

/* ── poster canvas ──────────────────────────────────────────── */

.poster {
  width: 1200px;
  margin: 32px auto;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: 0 8px 30px rgba(16, 24, 40, 0.08);
  overflow: hidden;
}

.p-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 56px;
  border-bottom: 1px solid var(--border);
}

.p-brand { font-weight: 700; font-size: 19px; letter-spacing: -0.02em; }
.p-brand span { color: var(--accent); }

.p-meta {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.p-body { padding: 48px 56px 40px; }

.p-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 56px;
  border-top: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--faint);
}

/* ── type ───────────────────────────────────────────────────── */

.eyebrow {
  font-family: var(--mono);
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}

.p-title {
  font-size: 34px;
  font-weight: 650;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 22px;
  text-wrap: balance;
}

.hero-title {
  font-size: 44px;
  font-weight: 650;
  letter-spacing: -0.035em;
  line-height: 1.15;
  text-wrap: balance;
  max-width: 900px;
}
.hero-title .keep { white-space: nowrap; }

.hero-sub {
  margin-top: 16px;
  font-size: 17.5px;
  color: var(--fg-80);
  max-width: 760px;
  text-wrap: balance;
}

.subsection-title {
  font-size: 19px;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: 32px 0 12px;
}

.prose p { margin-bottom: 14px; color: var(--fg-80); }
.prose p strong, .prose li strong { color: var(--fg); }

.authors { margin-top: 26px; font-size: 15px; color: var(--fg-80); line-height: 1.9; }
.authors a { color: var(--fg); }
.authors sup { color: var(--faint); }
.affiliations { margin-top: 8px; font-size: 13.5px; color: var(--muted); }
.affiliations-note { margin-top: 2px; font-size: 12.5px; color: var(--faint); }

/* ── buttons (visual only) ──────────────────────────────────── */

.hero-actions { margin-top: 24px; display: flex; flex-wrap: wrap; gap: 10px; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 16px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--fg);
  font-size: 14px;
  font-weight: 500;
}

/* ── cards ──────────────────────────────────────────────────── */

.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.card-grid { display: grid; gap: 16px; margin: 24px 0; }
.cols-3 { grid-template-columns: repeat(3, 1fr); }
.cols-4 { grid-template-columns: repeat(4, 1fr); }
.cols-2 { grid-template-columns: repeat(2, 1fr); }

.feature { padding: 22px 22px 20px; }
.feature h3 { font-size: 16.5px; font-weight: 600; letter-spacing: -0.02em; margin-bottom: 8px; }
.feature p:last-child { font-size: 14px; color: var(--muted); line-height: 1.6; }
.feature-num {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}

.stat { padding: 20px 18px 16px; }
.stat-num { font-size: 36px; font-weight: 650; letter-spacing: -0.04em; line-height: 1.1; }
.stat-unit { font-size: 21px; color: var(--muted); font-weight: 550; }
.stat-label { margin-top: 6px; font-size: 13px; color: var(--muted); line-height: 1.45; }

.fig { margin: 24px 0; }
.fig img { width: 100%; background: #fff; }
.fig figcaption {
  padding: 14px 18px;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--muted);
  border-top: 1px solid var(--border);
}
.fig figcaption strong { color: var(--fg); font-weight: 600; }

.fig.task img { aspect-ratio: 4 / 3; object-fit: cover; }
.fig.task figcaption strong { display: block; font-size: 14.5px; margin-bottom: 3px; }
.fig.task figcaption span { font-size: 13px; }

.fig-note { margin: 12px 2px 0; font-size: 13.5px; color: var(--muted); }
.fig-note strong { color: var(--fg); }

.ticks { list-style: none; margin: 6px 0 14px; }
.ticks li { position: relative; padding-left: 24px; margin-bottom: 10px; color: var(--fg-80); }
.ticks li::before {
  content: '';
  position: absolute;
  left: 2px; top: 0.62em;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.85;
}

/* ── tables ─────────────────────────────────────────────────── */

.table-card { margin: 24px 0; overflow-x: auto; }
.table-card table { width: 100%; border-collapse: collapse; font-size: 13.5px; white-space: nowrap; }
.table-card th, .table-card td {
  padding: 9px 12px;
  text-align: center;
  border-bottom: 1px solid var(--border);
  font-variant-numeric: tabular-nums;
}
.table-card th {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  background: var(--surface);
}
.table-card th.group { color: var(--fg); }
.table-card td:first-child, .table-card th:first-child { text-align: left; }
.table-card tbody tr:last-child td { border-bottom: none; }
.table-card .ours td { background: var(--accent-soft); }
.table-card .ours td:first-child { font-weight: 600; }
.table-card .best { color: var(--accent-strong); font-weight: 650; }

.card-note {
  padding: 11px 16px;
  font-size: 12.5px;
  color: var(--muted);
  border-top: 1px solid var(--border);
}
.card-note .best { color: var(--accent-strong); font-weight: 650; }

/* ── demo matrix ────────────────────────────────────────────── */

.demo-matrix {
  display: grid;
  grid-template-columns: 132px repeat(3, 1fr);
  gap: 12px;
  margin-top: 16px;
  align-items: stretch;
}
.dm-corner { display: block; }
.dm-colhead, .dm-rowhead {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  align-self: center;
}
.dm-colhead { text-align: center; }
.dm-rowhead { line-height: 1.5; }
.dm-rowhead em {
  display: inline-block;
  margin-left: 6px;
  font-style: normal;
  font-size: 10px;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 999px;
  padding: 1px 8px;
  letter-spacing: 0.06em;
}
.dm-cell {
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  background: #000;
}
.dm-cell video, .dm-cell img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 4 / 3; }

/* ── bibtex ─────────────────────────────────────────────────── */

.code-card { position: relative; margin: 20px 0 8px; background: var(--surface); }
.code-card pre {
  padding: 20px 22px;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.7;
  color: var(--fg-80);
  overflow-x: auto;
  white-space: pre;
}

/* ── index page ─────────────────────────────────────────────── */

.idx { max-width: 1200px; margin: 0 auto; padding: 48px 24px; }
.idx h1 { font-size: 26px; letter-spacing: -0.02em; margin-bottom: 6px; }
.idx p { color: var(--muted); font-size: 14px; margin-bottom: 24px; }
.idx ul { list-style: none; }
.idx li { margin-bottom: 10px; }
.idx a {
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px 20px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--fg);
  font-weight: 550;
  box-shadow: var(--shadow-sm);
}
.idx a:hover { border-color: var(--accent); }
.idx a span { font-family: var(--mono); font-size: 12px; color: var(--faint); }