/* DeepResearch Benchmark v3.8 — editorial/academic style with own identity
   Distinguishing motifs:
   - 8×8 matrix as visual signature (logos, hero, brand mark)
   - 20–35% pass-band ribbon recurring across score visualizations
   - Deep teal accent (not pure black) — #0f766e
   - Warm cream background — #fcfaf6 (lighter than ARL's #F7F7F5)
   - Inter for body (not mono); JetBrains Mono ONLY for numbers/IDs
*/

:root {
  --bg: #fcfaf6;
  --bg-card: #ffffff;
  --bg-subtle: #f4f1ea;
  --bg-band: rgba(15, 118, 110, 0.07);
  --border: #1a1714;
  --border-soft: #e7e2d8;
  --border-faint: #ede9df;
  --text: #0c0f17;
  --text-muted: #5e636b;
  --text-faint: #989ba1;
  --accent: #0f766e;       /* deep teal — our signature */
  --accent-soft: #d4eae6;
  --accent-strong: #0a4f4a;
  --gold: #b45309;         /* used sparingly */
  --link: #0f766e;
  --pass: #047857;
  --pass-bg: #d1fae5;
  --pass-border: #6ee7b7;
  --easy: #1d4ed8;
  --easy-bg: #dbeafe;
  --hard: #b91c1c;
  --hard-bg: #fee2e2;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "PingFang SC", "Helvetica Neue", sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  line-height: 1.55;
}
.mono, code, pre, kbd, samp {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.01em;
}

::selection { background: var(--accent); color: var(--bg); }
a { color: inherit; text-decoration: none; }
a:hover { text-decoration: none; }

/* ─────────────── Page chrome ─────────────── */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(252, 250, 246, 0.85);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s, background 0.2s;
}
body.scrolled .topbar { border-bottom-color: var(--border-soft); background: rgba(252, 250, 246, 0.96); }

.topbar-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 600;
}
.brand-mark {
  /* Our signature: matrix dot grid */
  width: 24px;
  height: 24px;
  display: inline-block;
  background-image:
    radial-gradient(circle, var(--text) 1.2px, transparent 1.2px);
  background-size: 6px 6px;
  background-position: 0 0;
}
.brand-mark.brand-mark-active {
  background-image:
    radial-gradient(circle, var(--accent) 1.4px, transparent 1.4px);
}
.brand-text {
  font-size: 14px;
  letter-spacing: -0.01em;
  display: flex;
  align-items: baseline;
  gap: 6px;
}
.brand-text-ver {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--text-muted);
}

.topbar-nav { display: flex; gap: 4px; align-items: center; }
.topbar-link {
  padding: 6px 12px;
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
  border-radius: 3px;
}
.topbar-link:hover { color: var(--text); background: rgba(15, 118, 110, 0.06); }
.topbar-link.active {
  color: var(--accent-strong);
  background: var(--accent-soft);
}

.topbar-actions { display: flex; gap: 6px; align-items: center; }

.kbd {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  padding: 1px 5px;
  background: rgba(0, 0, 0, 0.04);
  border: 1px solid var(--border-faint);
  color: var(--text-muted);
  border-radius: 3px;
}

/* ─────────────── Layout ─────────────── */
.container { max-width: 1200px; margin: 0 auto; padding: 0 28px; }
.container-narrow { max-width: 820px; margin: 0 auto; padding: 0 28px; }

.section { padding: 56px 0; }
.section:first-of-type { padding-top: 32px; }
.section + .section { border-top: 1px solid var(--border-faint); }

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--accent);
  margin-bottom: 12px;
  letter-spacing: 0.05em;
}
.section-eyebrow::before {
  content: '';
  width: 24px;
  height: 1.5px;
  background: var(--accent);
}

.section-title {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.025em;
  margin: 0 0 14px;
  color: var(--text);
}
.section-title-sm {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.015em;
  margin: 0 0 12px;
}
.section-lede {
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 680px;
  margin: 0 0 32px;
}

/* ─────────────── Hero ─────────────── */
.hero {
  padding: 80px 0 64px;
  position: relative;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 64px;
  align-items: center;
}
.hero-tagline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 10px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  margin-bottom: 24px;
  border-radius: 4px;
}
.hero-tagline-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}
.hero-title {
  font-size: 60px;
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: -0.035em;
  margin: 0 0 20px;
  color: var(--text);
}
.hero-title .accent-word {
  position: relative;
  display: inline-block;
  color: var(--accent);
}
.hero-lede {
  font-size: 17px;
  line-height: 1.6;
  color: var(--text-muted);
  max-width: 540px;
  margin: 0 0 32px;
}
.hero-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

/* Hero matrix visualization (our signature 8x8 grid) */
.hero-matrix {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  padding: 24px;
  border-radius: 6px;
}
.hero-matrix-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--text-muted);
  margin-bottom: 14px;
  display: flex;
  justify-content: space-between;
  letter-spacing: 0.04em;
}
.hero-matrix-grid {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 4px;
}
.hero-matrix-cell {
  aspect-ratio: 1;
  background: var(--bg-subtle);
  border-radius: 2px;
  position: relative;
  transition: all 0.4s ease;
}
.hero-matrix-axis {
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  color: var(--text-faint);
  margin-top: 10px;
  display: flex;
  justify-content: space-between;
}

/* ─────────────── Stats row ─────────────── */
.stat-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border-faint);
  border-top: 1px solid var(--border-faint);
  border-bottom: 1px solid var(--border-faint);
}
.stat-cell {
  background: var(--bg);
  padding: 28px 20px;
  text-align: center;
}
.stat-cell .num {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1;
  color: var(--text);
}
.stat-cell .num .unit {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-muted);
  margin-left: 2px;
}
.stat-cell .lbl {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-top: 8px;
  font-weight: 500;
}
.stat-cell .sub {
  font-size: 12px;
  color: var(--text-faint);
  margin-top: 6px;
}

/* ─────────────── Cards ─────────────── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: 4px;
}
.card-hover { transition: border-color 0.15s, transform 0.15s; }
.card-hover:hover { border-color: var(--accent); }
.card-pad { padding: 22px 24px; }
.card-pad-lg { padding: 28px 32px; }

/* ─────────────── Pass-band ribbon (signature motif) ─────────────── */
.bandbar {
  position: relative;
  height: 8px;
  background: var(--bg-subtle);
  border: 1px solid var(--border-faint);
  border-radius: 4px;
  overflow: hidden;
}
.bandbar-band {
  position: absolute;
  inset-block: 0;
  background: var(--accent-soft);
  border-left: 1.5px dashed var(--accent);
  border-right: 1.5px dashed var(--accent);
}
.bandbar-fill {
  position: absolute;
  inset-block: 0;
  left: 0;
  background: var(--text);
  border-radius: 4px 0 0 4px;
}
.bandbar-fill.in-band { background: var(--accent); }
.bandbar-fill.above-band { background: var(--easy); }
.bandbar-fill.below-band { background: var(--hard); }

/* Inline "band note" */
.band-note {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.band-note::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--accent-soft);
  border-left: 1px dashed var(--accent);
  border-right: 1px dashed var(--accent);
}

/* ─────────────── Buttons ─────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  border: 1px solid var(--border-soft);
  background: var(--bg-card);
  color: var(--text);
  border-radius: 4px;
  transition: all 0.12s;
  text-decoration: none;
}
.btn:hover { border-color: var(--text); }
.btn-primary {
  background: var(--accent);
  color: var(--bg-card);
  border-color: var(--accent);
}
.btn-primary:hover { background: var(--accent-strong); border-color: var(--accent-strong); color: var(--bg-card); }
.btn-secondary { background: var(--bg-card); border-color: var(--border-soft); color: var(--text); }
.btn-secondary:hover { background: var(--bg-subtle); }
.btn-ghost { background: transparent; border-color: transparent; color: var(--text-muted); }
.btn-ghost:hover { background: var(--bg-subtle); color: var(--text); border-color: transparent; }
.btn-sm { padding: 5px 10px; font-size: 12px; }

/* ─────────────── Tabs ─────────────── */
.tabs-row {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--border-soft);
  margin-bottom: 32px;
  overflow-x: auto;
}
.tab-btn {
  position: relative;
  padding: 10px 16px;
  background: transparent;
  border: none;
  font-family: inherit;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  white-space: nowrap;
  transition: color 0.1s;
}
.tab-btn:hover { color: var(--text); }
.tab-btn.active { color: var(--accent); font-weight: 600; }
.tab-btn.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 8px;
  right: 8px;
  height: 2px;
  background: var(--accent);
}

/* ─────────────── Inputs ─────────────── */
.input {
  width: 100%;
  padding: 8px 12px;
  font-size: 13px;
  border: 1px solid var(--border-soft);
  background: var(--bg-card);
  color: var(--text);
  font-family: inherit;
  outline: none;
  border-radius: 4px;
  transition: border-color 0.12s, box-shadow 0.12s;
}
.input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.input::placeholder { color: var(--text-faint); }

/* ─────────────── Tables ─────────────── */
.tbl { width: 100%; border-collapse: collapse; font-size: 13px; }
.tbl thead th {
  text-align: left;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  font-weight: 600;
  padding: 12px 14px;
  background: var(--bg-subtle);
  border-bottom: 1px solid var(--border-soft);
  white-space: nowrap;
}
.tbl tbody td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-faint);
  vertical-align: middle;
}
.tbl tbody tr:hover { background: var(--bg-subtle); }
.tbl tbody tr:last-child td { border-bottom: none; }
.tbl .best-score { font-weight: 700; color: var(--accent); }

/* Pills */
.pill {
  display: inline-flex;
  align-items: center;
  font-family: 'JetBrains Mono', monospace;
  font-variant-numeric: tabular-nums;
  font-size: 11px;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: 3px;
  letter-spacing: -0.01em;
}
.pill-pass { background: var(--pass-bg); color: var(--pass); }
.pill-easy { background: var(--easy-bg); color: var(--easy); }
.pill-hard { background: var(--hard-bg); color: var(--hard); }
.pill-neutral { background: var(--bg-subtle); color: var(--text-muted); }
.pill-accent { background: var(--accent-soft); color: var(--accent-strong); }

/* Badges (verdict markers) */
.badge {
  display: inline-flex;
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 3px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.badge-pass { background: var(--pass); color: white; }
.badge-easy { background: var(--easy); color: white; }
.badge-hard { background: var(--hard); color: white; }

/* Tier markers */
.tier {
  display: inline-flex;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 3px;
  border: 1px solid;
}
.tier-1 { color: var(--accent-strong); border-color: var(--accent); background: var(--accent-soft); }
.tier-2 { color: var(--easy); border-color: var(--easy); background: var(--easy-bg); }
.tier-3 { color: var(--text-muted); border-color: var(--text-faint); background: var(--bg-subtle); }
.tier-4 { color: var(--hard); border-color: var(--hard); background: var(--hard-bg); }

/* ─────────────── Case card ─────────────── */
.case-card {
  display: block;
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  padding: 16px 18px;
  border-radius: 4px;
  cursor: pointer;
  color: inherit;
  transition: all 0.12s;
  position: relative;
  overflow: hidden;
}
.case-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 32px;
  height: 2px;
  background: var(--accent);
  transition: width 0.2s;
}
.case-card:hover { border-color: var(--accent); transform: translateY(-1px); }
.case-card:hover::before { width: 100%; }
.case-card-id {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--accent);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-weight: 600;
}
.case-card-title {
  font-size: 15px;
  font-weight: 600;
  margin: 6px 0 8px;
  line-height: 1.35;
  letter-spacing: -0.01em;
}
.case-card-entities {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 14px;
  line-height: 1.45;
}
.case-card-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 11px;
  color: var(--text-muted);
  font-family: 'JetBrains Mono', monospace;
}

/* ─────────────── Matrix / Heatmap cells ─────────────── */
.matrix-cell {
  font-family: 'JetBrains Mono', monospace;
  font-variant-numeric: tabular-nums;
  min-width: 38px;
  height: 28px;
  font-size: 11px;
  font-weight: 700;
  text-align: center;
  cursor: pointer;
  position: relative;
  transition: transform 0.12s;
}
.matrix-cell:hover {
  transform: scale(1.6);
  z-index: 10;
  border-radius: 4px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
}

/* ─────────────── Markdown ─────────────── */
.markdown { color: var(--text); line-height: 1.7; font-size: 14px; }
.markdown h1 { font-size: 22px; font-weight: 700; margin: 24px 0 12px; letter-spacing: -0.02em; }
.markdown h2 { font-size: 18px; font-weight: 700; margin: 22px 0 10px; padding-bottom: 6px; border-bottom: 1px solid var(--border-faint); letter-spacing: -0.01em; }
.markdown h3 { font-size: 15px; font-weight: 600; margin: 18px 0 8px; color: var(--accent-strong); }
.markdown h4 { font-size: 14px; font-weight: 600; margin: 14px 0 6px; color: var(--text-muted); }
.markdown p { margin: 8px 0; }
.markdown ul, .markdown ol { margin: 8px 0 8px 22px; }
.markdown li { margin: 3px 0; }
.markdown table { border-collapse: collapse; margin: 14px 0; font-size: 12.5px; width: 100%; background: var(--bg-card); }
.markdown th, .markdown td { border: 1px solid var(--border-faint); padding: 7px 10px; text-align: left; vertical-align: top; }
.markdown th { background: var(--bg-subtle); font-weight: 600; font-size: 11px; text-transform: uppercase; letter-spacing: 0.04em; color: var(--text-muted); }
.markdown code { background: var(--bg-subtle); color: var(--accent-strong); padding: 1px 5px; font-size: 12px; font-family: 'JetBrains Mono', monospace; border-radius: 3px; }
.markdown pre { background: #0c0f17; color: #f0eee8; padding: 16px; overflow-x: auto; font-size: 12px; line-height: 1.6; margin: 12px 0; border-radius: 4px; }
.markdown pre code { background: transparent; padding: 0; color: inherit; }
.markdown strong { font-weight: 700; }
.markdown blockquote { border-left: 3px solid var(--accent); padding: 6px 16px; color: var(--text-muted); margin: 12px 0; background: var(--bg-subtle); border-radius: 0 4px 4px 0; }
.markdown a { color: var(--link); text-decoration: underline; text-underline-offset: 2px; }

/* ─────────────── Code block ─────────────── */
.code-block {
  background: #0c0f17;
  color: #f0eee8;
  padding: 18px 20px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12.5px;
  line-height: 1.6;
  overflow-x: auto;
  border-radius: 4px;
}
.code-block .comment { color: #767879; }
.code-block .keyword { color: #84d4cd; }
.code-block .string { color: #fbbf24; }

/* ─────────────── Cmd+K ─────────────── */
.cmdk-overlay {
  position: fixed;
  inset: 0;
  background: rgba(12, 15, 23, 0.55);
  backdrop-filter: blur(8px);
  z-index: 100;
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding-top: 12vh;
}
.cmdk-overlay.open { display: flex; animation: fade-in 0.15s; }
.cmdk-modal {
  background: var(--bg-card);
  border-radius: 8px;
  width: 92%;
  max-width: 600px;
  box-shadow: 0 24px 64px rgba(12, 15, 23, 0.3);
  border: 1px solid var(--border-soft);
  overflow: hidden;
}
.cmdk-input {
  width: 100%;
  border: none;
  outline: none;
  padding: 16px 20px;
  font-size: 15px;
  background: transparent;
  border-bottom: 1px solid var(--border-soft);
  font-family: inherit;
  color: var(--text);
}
.cmdk-list { max-height: 50vh; overflow-y: auto; }
.cmdk-item {
  padding: 10px 20px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  border-bottom: 1px solid var(--border-faint);
}
.cmdk-item:last-child { border-bottom: none; }
.cmdk-item:hover, .cmdk-item.selected { background: var(--bg-subtle); }
.cmdk-item .case-id { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--text-faint); }
.cmdk-foot {
  padding: 8px 20px;
  border-top: 1px solid var(--border-soft);
  font-size: 11px;
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
  background: var(--bg-subtle);
}

/* ─────────────── Scrollbars ─────────────── */
.styled-scroll::-webkit-scrollbar { width: 8px; height: 8px; }
.styled-scroll::-webkit-scrollbar-thumb { background: var(--border-soft); border-radius: 4px; }
.styled-scroll::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }
.styled-scroll::-webkit-scrollbar-track { background: transparent; }

/* ─────────────── Animations ─────────────── */
@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }
@keyframes slide-up { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }
@keyframes matrix-pulse { 0%, 100% { background: var(--bg-subtle); } 50% { background: var(--accent); } }
.animate-fade-in { animation: fade-in 0.25s ease-out; }
.animate-slide-up { animation: slide-up 0.3s cubic-bezier(.4,0,.2,1); animation-fill-mode: backwards; }

/* Matrix-pulse: cells that are "pass" highlight */
.matrix-pulse-cell { animation: matrix-pulse 3s ease-in-out infinite; }

/* ─────────────── Range / score viz ─────────────── */
.range-track {
  position: relative;
  height: 10px;
  background: var(--bg-subtle);
  border: 1px solid var(--border-soft);
  border-radius: 5px;
}
.range-pass-band {
  position: absolute;
  top: -1px;
  bottom: -1px;
  background: var(--accent-soft);
  border-left: 1.5px dashed var(--accent);
  border-right: 1.5px dashed var(--accent);
}
.range-marker {
  position: absolute;
  top: 50%;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  border: 2px solid var(--bg-card);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.15);
}

/* ─────────────── Pipeline timeline (our signature) ─────────────── */
.pipeline-track {
  display: flex;
  gap: 0;
  position: relative;
  margin: 32px 0 16px;
  flex-wrap: wrap;
}
.pipeline-stage {
  flex: 1 1 0;
  min-width: 70px;
  position: relative;
  padding: 10px 4px 0;
  text-align: center;
}
.pipeline-stage::before {
  content: '';
  position: absolute;
  top: 4px;
  left: 50%;
  width: 100%;
  height: 1.5px;
  background: var(--border-soft);
}
.pipeline-stage:last-child::before { display: none; }
.pipeline-stage-dot {
  width: 9px;
  height: 9px;
  background: var(--bg-card);
  border: 2px solid var(--accent);
  border-radius: 50%;
  margin: 0 auto 8px;
  position: relative;
  z-index: 2;
}
.pipeline-stage-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--text);
  font-weight: 600;
  margin-bottom: 4px;
}
.pipeline-stage-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 9px;
  color: var(--text-faint);
}

/* ─────────────── Footer ─────────────── */
.footer {
  border-top: 1px solid var(--border-soft);
  padding: 40px 0 32px;
  margin-top: 64px;
  background: var(--bg-subtle);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 32px;
}
.footer-brand { color: var(--text); }
.footer-brand-text { font-size: 14px; font-weight: 600; margin-top: 10px; }
.footer-brand-sub { font-size: 12px; color: var(--text-muted); margin-top: 6px; }
.footer-col h4 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin: 0 0 10px;
}
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col li { margin: 4px 0; font-size: 13px; }
.footer-col a { color: var(--text); }
.footer-col a:hover { color: var(--accent); }
.footer-bottom {
  padding-top: 20px;
  border-top: 1px solid var(--border-soft);
  font-size: 11px;
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

/* ─────────────── Author byline (paper-style) ─────────────── */
.byline {
  font-size: 13px;
  color: var(--text);
  line-height: 1.6;
  margin: 18px 0 6px;
}
.byline .author { white-space: nowrap; }
.byline .author.eq::after { content: "*"; color: var(--accent); margin-left: 1px; }
.byline .author.cor::after { content: "†"; color: var(--accent); margin-left: 1px; }
.byline-affil { font-size: 12px; color: var(--text-muted); font-style: italic; margin: 4px 0 0; }
.byline-note { font-size: 11px; color: var(--text-muted); margin-top: 6px; }
.byline-note .mark { color: var(--accent); font-weight: 600; }

/* Capability family pills */
.cap {
  display: inline-flex;
  align-items: center;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: 3px;
  letter-spacing: 0.02em;
}
.cap-retrieval { background: #e0e7ff; color: #3730a3; }
.cap-derivation { background: #d1fae5; color: #047857; }
.cap-reasoning { background: #fef3c7; color: #92400e; }
.cap-calibration { background: #fce7f3; color: #be185d; }

/* T-level tags */
.tlevel {
  display: inline-flex;
  align-items: center;
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 3px;
  letter-spacing: 0;
}
.tlevel-1 { background: #d1fae5; color: #065f46; border: 1px solid #6ee7b7; }
.tlevel-2 { background: #dbeafe; color: #1e40af; border: 1px solid #93c5fd; }
.tlevel-3 { background: #fef3c7; color: #92400e; border: 1px solid #fcd34d; }
.tlevel-4 { background: #fee2e2; color: #991b1b; border: 1px solid #fca5a5; }

/* Correlation heatmap cell */
.corr-cell {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10.5px;
  text-align: center;
  width: 46px;
  height: 28px;
  padding: 0;
  vertical-align: middle;
  font-weight: 600;
}

/* Citation card */
.citation {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  background: var(--bg-card);
  border-left: 3px solid var(--accent);
  padding: 14px 18px;
  line-height: 1.55;
  color: var(--text);
  border-radius: 0 4px 4px 0;
}
.citation .field { color: var(--text-muted); }

/* ─────────────── Skeleton ─────────────── */
@keyframes shimmer { 0% { background-position: -200% 0; } 100% { background-position: 200% 0; } }
.skeleton { background: linear-gradient(90deg, #f4f1ea 0%, #ede9df 50%, #f4f1ea 100%); background-size: 200% 100%; animation: shimmer 1.4s infinite; }

/* ─────────────── Responsive ─────────────── */
@media (max-width: 800px) {
  .hero-grid { grid-template-columns: 1fr; gap: 32px; }
  .hero-title { font-size: 38px; }
  .stat-row { grid-template-columns: repeat(2, 1fr); }
  .topbar-nav { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .container, .container-narrow { padding: 0 16px; }
  .topbar-inner { padding: 12px 16px; }
}

/* Smooth scroll to anchor */
html { scroll-behavior: smooth; }
.section { scroll-margin-top: 80px; }