/* ----------------------------------------------------------------------------
   HapticVLA — paper site
   Aesthetic: editorial-bold scientific. Near-black canvas, Instrument Serif
   italic display, IBM Plex Sans body, JetBrains Mono for technical text and
   figure captions. One red accent drawn from the tactile heatmap.
---------------------------------------------------------------------------- */

:root {
  --bg:         #0a0a0b;
  --bg-elev:    #121214;
  --bg-paper:   #f5f5f0;   /* for white-bg paper figures set against dark */
  --fg:         #ededea;
  --fg-muted:   #8f8f8c;
  --fg-dim:     #5a5a58;
  --hair:       rgba(255, 255, 255, 0.08);
  --hair-bold:  rgba(255, 255, 255, 0.16);
  --accent:     #ff3b30;
  --accent-dim: #a3251e;

  --serif:  'Instrument Serif', 'Cormorant Garamond', Georgia, serif;
  --sans:   'IBM Plex Sans', -apple-system, 'Segoe UI', sans-serif;
  --mono:   'JetBrains Mono', 'IBM Plex Mono', ui-monospace, monospace;

  --maxw: 1320px;
  --pad-x: clamp(1.5rem, 4vw, 3.5rem);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  font-feature-settings: 'ss01', 'cv11';
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

/* grain overlay — adds tactile depth to the dark canvas, reinforces the theme */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1000;
  background-image:
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' seed='3'/><feColorMatrix values='0 0 0 0 0.05  0 0 0 0 0.05  0 0 0 0 0.05  0 0 0 0.25 0'/></filter><rect width='100%' height='100%' filter='url(%23n)' opacity='1'/></svg>");
  opacity: 0.35;
  mix-blend-mode: overlay;
}

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

/* ----------------------------------------------------------------------------
   Layout primitives
---------------------------------------------------------------------------- */

.shell {
  max-width: var(--maxw);
  margin: 0 auto;
  padding-left: var(--pad-x);
  padding-right: var(--pad-x);
}

.hairline {
  border: 0;
  border-top: 1px solid var(--hair);
  margin: 0;
}

/* ----------------------------------------------------------------------------
   Top bar
---------------------------------------------------------------------------- */

.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10, 10, 11, 0.82);
  backdrop-filter: saturate(140%) blur(14px);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  border-bottom: 1px solid var(--hair);
}
.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 52px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--fg-muted);
}
.topbar .lab {
  text-transform: uppercase;
}
.topbar .lab .dot {
  color: var(--accent);
  margin: 0 8px;
}
.topbar .crumb {
  color: var(--fg);
}
.topbar-nav {
  display: flex;
  gap: 28px;
}
.topbar-nav a {
  color: var(--fg-muted);
  transition: color 120ms ease;
}
.topbar-nav a:hover { color: var(--fg); }
@media (max-width: 780px) {
  .topbar-nav { display: none; }
}

/* ----------------------------------------------------------------------------
   Hero
---------------------------------------------------------------------------- */

.hero {
  padding-top: clamp(3rem, 6vw, 5rem);
  padding-bottom: clamp(3rem, 6vw, 5rem);
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: clamp(2rem, 5vw, 5rem);
  align-items: center;
}
@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; }
}

.hero-copy .tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-muted);
  padding: 6px 10px 6px 0;
  border-left: 2px solid var(--accent);
  padding-left: 10px;
  margin-bottom: 2.2rem;
}
.hero-copy .tag .blink {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
  animation: blink 2s infinite ease-in-out;
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero-copy h1 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(3rem, 8vw, 6.5rem);
  line-height: 0.95;
  letter-spacing: -0.015em;
  margin: 0;
  color: var(--fg);
}
.hero-copy h1 .ital {
  font-style: italic;
  color: var(--accent);
}

.hero-copy .tagline {
  font-family: var(--serif);
  font-style: italic;
  font-size: clamp(1.15rem, 1.8vw, 1.45rem);
  line-height: 1.4;
  color: var(--fg-muted);
  margin: 1.8rem 0 2.4rem 0;
  max-width: 34ch;
}
.hero-copy .tagline em {
  font-style: normal;
  color: var(--fg);
  font-family: var(--sans);
  font-weight: 500;
  font-size: 0.88em;
  padding: 0 0.2em;
}

.authors-line {
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--fg-muted);
  letter-spacing: 0.01em;
  max-width: 48rem;
}
.authors-line .a {
  color: var(--fg);
  transition: color 120ms ease;
}
.authors-line .star {
  color: var(--accent);
}
.authors-line small {
  display: block;
  margin-top: 0.6rem;
  font-size: 10.5px;
  color: var(--fg-dim);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 2.2rem;
}
.hero-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  border: 1px solid var(--hair-bold);
  border-radius: 2px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--fg);
  transition: border-color 160ms ease, color 160ms ease, background 160ms ease;
}
.hero-link:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(255, 59, 48, 0.05);
}
.hero-link .arrow { opacity: 0.5; }
.hero-link:hover .arrow { opacity: 1; transform: translateX(2px); }
.hero-link .arrow { transition: transform 160ms ease, opacity 160ms ease; }

/* --- Hero visualization — the animated haptic grid ------------------------ */

.hero-viz {
  position: relative;
  aspect-ratio: 1 / 1;
  width: 100%;
  max-width: 520px;
  justify-self: end;
  border: 1px solid var(--hair-bold);
  background:
    linear-gradient(145deg, rgba(255,255,255,0.03), rgba(255,255,255,0)) ,
    radial-gradient(ellipse at top right, rgba(255,59,48,0.05), transparent 70%),
    #0c0c0e;
  overflow: hidden;
}
@media (max-width: 960px) {
  .hero-viz { justify-self: stretch; margin-top: 1rem; }
}
.hero-viz canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.hero-viz .viz-corner {
  position: absolute;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-muted);
  pointer-events: none;
}
.hero-viz .viz-corner.tl { top: 12px; left: 14px; }
.hero-viz .viz-corner.tr { top: 12px; right: 14px; color: var(--fg-dim); }
.hero-viz .viz-corner.bl { bottom: 12px; left: 14px; color: var(--fg-dim); }
.hero-viz .viz-corner.br {
  bottom: 12px; right: 14px;
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--fg-muted);
}
.hero-viz .viz-corner.br .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent);
  animation: blink 1.6s infinite ease-in-out;
}

/* ----------------------------------------------------------------------------
   Section scaffolding
---------------------------------------------------------------------------- */

section.sec {
  padding-top: clamp(4rem, 7vw, 7rem);
  padding-bottom: clamp(4rem, 7vw, 7rem);
  border-top: 1px solid var(--hair);
}

.sec-head {
  display: flex;
  align-items: baseline;
  gap: 1.2rem;
  margin-bottom: 2.8rem;
}
.sec-head .n {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--accent);
  padding-top: 4px;
}
.sec-head h2 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(2rem, 3.4vw, 2.9rem);
  letter-spacing: -0.015em;
  margin: 0;
  line-height: 1;
}
.sec-head h2 em { font-style: italic; color: var(--accent); }

.sec-sub {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin-left: auto;
}

.prose {
  max-width: 62ch;
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--fg);
}
.prose p + p { margin-top: 1.1em; }
.prose em { color: var(--fg); }
.prose strong { color: var(--fg); font-weight: 600; }

/* Abstract prose sits centered in the shell with breathing room on both
   sides — wider than the default .prose measure but still single-column
   so it reads easily. */
#abstract .prose {
  max-width: 78ch;
  margin-left: auto;
  margin-right: auto;
  font-size: 1.05rem;
}

/* ----------------------------------------------------------------------------
   Abstract + Results chart (grouped bar chart)
---------------------------------------------------------------------------- */

.results-chart {
  margin: 2.8rem 0 0 0;
  padding: 1.6rem 1.8rem 1.4rem 1.8rem;
  border: 1px solid var(--hair);
  background: linear-gradient(180deg, rgba(255,255,255,0.015), transparent);
}
.results-chart .chart-title,
.results-chart .chart-note {
  display: block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.results-chart .chart-title {
  color: var(--fg);
  margin: 0 0 1.2rem 0;
}
.results-chart .chart-note {
  color: var(--fg-dim);
  margin-top: 1rem;
  line-height: 1.7;
  letter-spacing: 0.04em;
  text-transform: none;
  font-size: 11px;
}

.chart-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  /* subtle fade to hint scrollability when clipped */
  margin: 0 -0.25rem;
}
.chart-wrap::-webkit-scrollbar { height: 6px; }
.chart-wrap::-webkit-scrollbar-thumb {
  background: var(--hair-bold);
  border-radius: 3px;
}

.results-chart svg.chart {
  display: block;
  width: 100%;
  min-width: 760px;   /* keeps labels legible; smaller screens scroll */
  height: auto;
}

/* --- series palette ------------------------------------------------------ */
/*  s0 SmolVLA              · neutral gray
 *  s1 SmolVLA w/ SA-RWFM   · muted steel blue
 *  s2 X-VLA                · pale sky blue
 *  s3 VLA-0                · muted gold
 *  s4 HapticVLA (ours)     · accent red                                   */
:root {
  --s0: #8f8f8a;
  --s1: #6490c8;
  --s2: #a9c5e6;
  --s3: #d8ad4d;
  --s4: #ff3b30;  /* == var(--accent) */
}

.results-chart .bar      { transition: filter 180ms ease; }
.results-chart .bar.s0   { fill: var(--s0); }
.results-chart .bar.s1   { fill: var(--s1); }
.results-chart .bar.s2   { fill: var(--s2); }
.results-chart .bar.s3   { fill: var(--s3); }
.results-chart .bar.s4   { fill: var(--s4); }
.results-chart .grp:hover .bar { filter: brightness(1.08); }

.results-chart .sw.s0 { fill: var(--s0); }
.results-chart .sw.s1 { fill: var(--s1); }
.results-chart .sw.s2 { fill: var(--s2); }
.results-chart .sw.s3 { fill: var(--s3); }
.results-chart .sw.s4 { fill: var(--s4); }

.results-chart .legend .lbl {
  font-family: var(--mono);
  font-size: 11px;
  fill: var(--fg);
  letter-spacing: 0.02em;
  dominant-baseline: middle;
}
.results-chart .axes .axis { stroke: var(--hair-bold); }
.results-chart .axes .grid { stroke: var(--hair); stroke-dasharray: 2 4; }
.results-chart .ytick text {
  font-family: var(--mono);
  font-size: 10px;
  fill: var(--fg-dim);
  letter-spacing: 0.02em;
  dominant-baseline: middle;
}

.results-chart .val {
  font-family: var(--mono);
  font-size: 10px;
  fill: var(--fg-muted);
  text-anchor: middle;
  letter-spacing: 0.02em;
}
.results-chart .val.s4 { fill: var(--accent); font-weight: 500; }

.results-chart .xlbl {
  font-family: var(--mono);
  font-size: 11px;
  fill: var(--fg);
  text-anchor: middle;
  letter-spacing: 0.04em;
  font-weight: 500;
}

/* ----------------------------------------------------------------------------
   Method
---------------------------------------------------------------------------- */

.paper-figure {
  margin: 1rem 0 3rem 0;
  background: var(--bg-paper);
  padding: clamp(1.25rem, 3vw, 2.5rem);
  border: 1px solid var(--hair);
}
.paper-figure img {
  display: block;
  width: 100%;
  height: auto;
}
.paper-figure figcaption {
  display: block;
  margin-top: 1rem;
  font-family: var(--mono);
  font-size: 11.5px;
  color: #555;
  line-height: 1.6;
  letter-spacing: 0.02em;
}

.stages {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--hair);
  border: 1px solid var(--hair);
}
@media (max-width: 860px) {
  .stages { grid-template-columns: 1fr; }
}
.stage {
  background: var(--bg);
  padding: 2rem 1.8rem 2.2rem 1.8rem;
}
.stage .stage-num {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--accent);
  display: block;
  margin-bottom: 0.6rem;
}
.stage h3 {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  font-size: 1.55rem;
  margin: 0 0 0.8rem 0;
  letter-spacing: -0.005em;
}
.stage p {
  color: var(--fg-muted);
  font-size: 0.95rem;
  line-height: 1.65;
  margin: 0;
}

/* ----------------------------------------------------------------------------
   Hardware
---------------------------------------------------------------------------- */

.hw-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: stretch;
}
@media (max-width: 960px) {
  .hw-grid { grid-template-columns: 1fr; }
}
.hw-photo {
  background: var(--bg-paper);
  padding: clamp(1rem, 2vw, 2rem);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--hair);
}
.hw-photo img {
  max-width: 100%;
  height: auto;
  display: block;
}

.hw-right {
  display: flex;
  flex-direction: column;
  gap: 1.4rem;
  min-width: 0;
}
.specs {
  border-top: 1px solid var(--hair-bold);
  width: 100%;
  border-collapse: collapse;
  font-family: var(--mono);
  font-size: 13px;
}
.specs tr {
  border-bottom: 1px solid var(--hair);
}
.specs td {
  padding: 0.75rem 0;
  vertical-align: baseline;
}
.specs td:first-child {
  color: var(--fg-muted);
  width: 38%;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 11px;
}
.specs td:last-child {
  color: var(--fg);
  line-height: 1.55;
  font-size: 12.5px;
}
.specs em {
  font-style: normal;
  color: var(--fg-muted);
  font-size: 11px;
  margin-left: 0.5em;
}

.hw-tactile {
  display: flex;
  gap: 1rem;
  align-items: stretch;
  margin-top: auto;   /* push to bottom so column height matches robot photo */
}
.hw-tactile figure {
  margin: 0;
  flex: 1 1 0;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}
.hw-tactile .frame {
  position: relative;
  background: var(--bg-paper);
  padding: 10px;
  border: 1px solid var(--hair-bold);
  box-shadow: 0 8px 24px -12px rgba(0,0,0,0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  /* corner ticks — subtle scientific detail */
}
.hw-tactile .frame::before,
.hw-tactile .frame::after {
  content: '';
  position: absolute;
  width: 8px; height: 8px;
  border-color: var(--fg-dim);
}
.hw-tactile .frame::before {
  top: -1px; left: -1px;
  border-top: 1px solid var(--accent);
  border-left: 1px solid var(--accent);
}
.hw-tactile .frame::after {
  bottom: -1px; right: -1px;
  border-bottom: 1px solid var(--accent);
  border-right: 1px solid var(--accent);
}
.hw-tactile .frame img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
}
.hw-tactile figcaption {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--fg-muted);
  text-transform: uppercase;
  line-height: 1.5;
}

/* ----------------------------------------------------------------------------
   Results (video)
---------------------------------------------------------------------------- */

.video-frame {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #000;
  border: 1px solid var(--hair-bold);
  overflow: hidden;
}
.video-frame iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* --- click-through thumbnail variant --- */
a.video-frame.video-link {
  display: block;
  cursor: pointer;
  transition: border-color 220ms ease;
}
a.video-frame.video-link:hover { border-color: var(--accent); }
a.video-frame.video-link img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.78;
  transition: opacity 220ms ease, transform 480ms cubic-bezier(.2,.65,.2,1);
}
a.video-frame.video-link::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(10,10,11,0.25) 0%,
    rgba(10,10,11,0.05) 40%,
    rgba(10,10,11,0.55) 100%
  );
  pointer-events: none;
  transition: background 220ms ease;
}
a.video-frame.video-link:hover img {
  opacity: 1;
  transform: scale(1.02);
}
a.video-frame.video-link .play-btn {
  position: absolute;
  top: 50%; left: 50%;
  width: clamp(70px, 9vw, 100px);
  height: clamp(70px, 9vw, 100px);
  transform: translate(-50%, -50%);
  pointer-events: none;
  filter: drop-shadow(0 6px 30px rgba(0,0,0,0.55));
}
a.video-frame.video-link .play-btn svg { width: 100%; height: 100%; display: block; }
a.video-frame.video-link .play-btn circle {
  fill: rgba(10,10,11,0.55);
  stroke: #fff;
  stroke-width: 1.5;
  transition: fill 220ms ease, stroke 220ms ease;
}
a.video-frame.video-link .play-btn polygon { fill: #fff; transition: fill 220ms ease; }
a.video-frame.video-link:hover .play-btn circle {
  fill: var(--accent);
  stroke: var(--accent);
}
a.video-frame.video-link:hover .play-btn polygon { fill: #fff; }

a.video-frame.video-link .video-tag {
  position: absolute;
  bottom: 14px;
  right: 14px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #fff;
  background: rgba(10,10,11,0.65);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  padding: 7px 11px;
  border: 1px solid rgba(255,255,255,0.14);
  transition: border-color 220ms ease, color 220ms ease;
}
a.video-frame.video-link:hover .video-tag {
  border-color: var(--accent);
  color: var(--accent);
}

.video-caption {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--fg-muted);
  margin-top: 0.9rem;
  text-transform: uppercase;
}

/* ----------------------------------------------------------------------------
   Ablation table
---------------------------------------------------------------------------- */

.ablation {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--mono);
  font-size: 14px;
  font-feature-settings: 'tnum';
  margin-top: 1rem;
}
.ablation thead th {
  text-align: left;
  font-weight: 500;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-muted);
  padding: 0.9rem 1rem 0.9rem 0;
  border-bottom: 1px solid var(--hair-bold);
}
.ablation tbody td {
  padding: 1rem 1rem 1rem 0;
  border-bottom: 1px solid var(--hair);
  color: var(--fg);
}
.ablation tbody tr:last-child td { border-bottom: 1px solid var(--hair-bold); }
.ablation tbody td:first-child { color: var(--fg); }

.ablation-lead {
  margin-top: -1rem;
  margin-bottom: 1.8rem;
  color: var(--fg-muted);
  font-family: var(--sans);
  font-size: 0.95rem;
  letter-spacing: 0;
  text-transform: none;
  line-height: 1.65;
  max-width: 62ch;
}
.ablation-lead strong { color: var(--accent); font-weight: 500; }
.ablation-lead em { color: var(--fg); font-style: italic; }

.ablation-note {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--fg-dim);
  margin-top: 1rem;
  line-height: 1.7;
  max-width: 64ch;
}

/* ----------------------------------------------------------------------------
   Cards (code & weights)
---------------------------------------------------------------------------- */

.cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--hair);
  border: 1px solid var(--hair);
}
@media (max-width: 720px) {
  .cards { grid-template-columns: 1fr; }
}
.card {
  background: var(--bg);
  padding: 1.7rem 1.8rem 1.9rem 1.8rem;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  transition: background 160ms ease;
}
a.card:hover {
  background: #141416;
}
.card .card-label {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}
.card .card-title {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.45rem;
  line-height: 1.1;
  color: var(--fg);
}
.card .card-hint {
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--fg-muted);
  letter-spacing: 0.03em;
}
.card ul {
  list-style: none;
  margin: 0.4rem 0 0 0;
  padding: 0;
  font-family: var(--mono);
  font-size: 12.5px;
}
.card ul li {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.45rem 0;
  border-bottom: 1px dashed var(--hair);
}
.card ul li:last-child { border-bottom: 0; }
.card ul li a {
  color: var(--fg);
  transition: color 120ms ease;
}
.card ul li a:hover { color: var(--accent); }
.card ul li em {
  font-style: normal;
  color: var(--fg-dim);
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ----------------------------------------------------------------------------
   BibTeX
---------------------------------------------------------------------------- */

.bibtex {
  position: relative;
  background: var(--bg-elev);
  border: 1px solid var(--hair);
  padding: 1.5rem 1.75rem;
}
.bibtex pre {
  margin: 0;
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--fg);
  line-height: 1.7;
  overflow-x: auto;
  white-space: pre;
}
.bibtex .copy {
  position: absolute;
  top: 14px;
  right: 14px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  background: transparent;
  color: var(--fg-muted);
  border: 1px solid var(--hair-bold);
  padding: 6px 10px;
  cursor: pointer;
  transition: color 140ms ease, border-color 140ms ease;
}
.bibtex .copy:hover {
  color: var(--accent);
  border-color: var(--accent);
}
.bibtex .copy.ok {
  color: var(--accent);
  border-color: var(--accent);
}

/* ----------------------------------------------------------------------------
   Authors grid
---------------------------------------------------------------------------- */

.author-list {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1px;
  background: var(--hair);
  border: 1px solid var(--hair);
}
@media (max-width: 960px) { .author-list { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 600px) { .author-list { grid-template-columns: repeat(2, 1fr); } }
.author {
  background: var(--bg);
  padding: 1.3rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  min-height: 100px;
}
.author .name {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.1rem;
  line-height: 1.15;
  color: var(--fg);
}
.author .role {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-dim);
}
.author .star {
  color: var(--accent);
  margin-left: 0.2em;
}

.affil-line {
  margin-top: 1.8rem;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--fg-muted);
  text-align: center;
}
.affil-line .dot { color: var(--accent); margin: 0 10px; }

/* ----------------------------------------------------------------------------
   Footer
---------------------------------------------------------------------------- */

.footer {
  border-top: 1px solid var(--hair);
  padding: 2rem 0 3rem 0;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--fg-dim);
}
.footer .inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer a:hover { color: var(--accent); }

/* ----------------------------------------------------------------------------
   Selection
---------------------------------------------------------------------------- */

::selection {
  background: var(--accent);
  color: #0a0a0b;
}