/* ============================================================
   OckBench — Concept B: "The Paper"
   A scholarly, letterpress-inspired treatment: warm paper ground,
   serif typography, hairline rules, one oxblood accent.
   ============================================================ */

:root {
  --paper:        #f6f3ec;
  --paper-raised: #fcfaf5;
  --ink:          #211d17;
  --ink-soft:     #554e41;
  --ink-mute:     #837a68;
  --line:         #ddd6c6;
  --line-strong:  #b3a98f;
  --accent:       #7a2e2a;
  --accent-deep:  #5c211e;
  --accent-tint:  rgba(122, 46, 42, 0.055);

  --serif:   "Source Serif 4", "Source Serif Pro", Georgia, "Times New Roman", serif;
  --display: "Newsreader", "Source Serif 4", Georgia, "Times New Roman", serif;
  --mono:    ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;

  --ease: 150ms ease;
}

/* ── Reset ─────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body, h1, h2, h3, h4, p, ol, ul, figure, blockquote, pre { margin: 0; }
img { max-width: 100%; height: auto; }
button { font: inherit; color: inherit; background: none; border: 0; padding: 0; cursor: pointer; }

/* ── Base ──────────────────────────────────────────────────── */
body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 1.0625rem;
  line-height: 1.72;
  font-feature-settings: "kern" 1, "liga" 1;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

::selection { background: rgba(122, 46, 42, 0.16); }

.container {
  width: min(100% - 3rem, 42.5rem);
  margin-inline: auto;
}

/* ── Accessibility ─────────────────────────────────────────── */
.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 10;
  background: var(--ink);
  color: var(--paper);
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
  text-decoration: none;
  transition: top var(--ease);
}
.skip-link:focus-visible { top: 1rem; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 1px;
}

/* ── Masthead ──────────────────────────────────────────────── */
.masthead {
  text-align: center;
  padding-top: 3.75rem;
}

.kicker {
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin-bottom: 1.6rem;
}

.device {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  display: inline-block;
}

.title {
  font-family: var(--display);
  font-weight: 500;
  font-size: clamp(3rem, 9vw, 4.5rem);
  line-height: 1.02;
  letter-spacing: -0.015em;
  margin-top: 0.9rem;
}

.tagline {
  font-family: var(--display);
  font-style: italic;
  font-size: clamp(1.12rem, 3.2vw, 1.42rem);
  line-height: 1.35;
  color: var(--ink-soft);
  margin-top: 0.65rem;
}

.authors {
  margin-top: 1.9rem;
  font-size: 1.04rem;
}
.authors sup, .affiliations sup, .equal sup {
  font-size: 0.62em;
  line-height: 0;
}
.equal {
  font-size: 0.8rem;
  color: var(--ink-mute);
  margin-top: 0.35rem;
}
.affiliations {
  font-size: 0.9rem;
  color: var(--ink-soft);
  margin-top: 0.55rem;
}
.affiliations .dot { color: var(--line-strong); margin-inline: 0.35em; }

.links {
  margin-top: 1.9rem;
  padding-bottom: 2.4rem;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.4rem 2.1rem;
}
.links a {
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ink);
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: color var(--ease), border-color var(--ease);
}
.links a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* Classic thin-over-thick masthead rule */
.rule-double {
  border-top: 1px solid var(--ink);
  height: 5px;
  border-bottom: 2.5px solid var(--ink);
}

/* ── Sections ──────────────────────────────────────────────── */
.section { margin-top: 4.25rem; }

.sec-head {
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.42rem;
  line-height: 1.25;
  letter-spacing: 0.005em;
  display: flex;
  align-items: baseline;
  gap: 0.9rem;
  margin-bottom: 1.7rem;
}
.sec-head::after {
  content: "";
  flex: 1;
  border-top: 1px solid var(--line-strong);
  transform: translateY(-0.28em);
}
.sec-num {
  color: var(--accent);
  font-weight: 500;
}

.sub-head {
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.08rem;
  margin: 2.9rem 0 1.1rem;
}

/* ── Prose ─────────────────────────────────────────────────── */
p { margin: 1.05rem 0; }
strong { font-weight: 650; }

.section > .container > p,
.domain-list,
.contributions,
.findings {
  text-wrap: pretty;
}

.epigraph {
  text-align: center;
  margin: 2.4rem auto 2.6rem;
  max-width: 34rem;
}
.epigraph p {
  font-family: var(--display);
  font-style: italic;
  font-size: 1.3rem;
  line-height: 1.45;
  color: var(--ink);
  margin: 0;
}
.epigraph cite {
  display: block;
  margin-top: 0.8rem;
  font-style: normal;
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

/* Contributions: roman-numeral list, hanging indent */
.contributions {
  list-style: none;
  padding: 0;
  margin: 1.3rem 0 1.5rem;
  counter-reset: contrib;
}
.contributions li {
  counter-increment: contrib;
  position: relative;
  padding-left: 2.6rem;
  margin: 0.7rem 0;
}
.contributions li::before {
  content: counter(contrib, lower-roman) ".";
  position: absolute;
  left: 0.4rem;
  color: var(--accent);
  font-family: var(--display);
  font-style: italic;
}

/* ── Figure ────────────────────────────────────────────────── */
.figure { margin: 2.6rem 0 0; }
.figure img {
  display: block;
  width: 100%;
  border: 1px solid var(--line);
  background: #fff;
  padding: 0.5rem;
}
.figure figcaption {
  margin: 0.9rem auto 0;
  max-width: 36rem;
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--ink-mute);
  padding-left: 4.4rem;
  text-indent: -4.4rem;
}
.fig-label {
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 0.02em;
}

/* ── Observations ──────────────────────────────────────────── */
.observations {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 0.4rem;
}
.obs {
  border-top: 1px solid var(--ink);
  padding-top: 0.9rem;
}
.obs h4 {
  font-family: var(--display);
  font-weight: 600;
  font-size: 1rem;
  line-height: 1.3;
  margin-bottom: 0.5rem;
}
.obs p {
  font-size: 0.88rem;
  line-height: 1.62;
  color: var(--ink-soft);
  margin: 0;
}

/* ── Leaderboard ───────────────────────────────────────────── */
.lb-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin: 1.9rem 0 2.2rem;
}

#license-filter, #heat-metric {
  display: flex;
  gap: 1.6rem;
}
#license-filter button, #heat-metric button {
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-mute);
  padding: 0.3rem 0.05rem;
  border-bottom: 1px solid transparent;
  transition: color var(--ease), border-color var(--ease);
}
#license-filter button:hover, #heat-metric button:hover { color: var(--accent); }
#license-filter button.is-active, #heat-metric button.is-active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

#toggle-models-btn {
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-soft);
  border: 1px solid var(--line-strong);
  border-radius: 2px;
  padding: 0.45em 1.1em;
  transition: color var(--ease), border-color var(--ease), background-color var(--ease);
}
#toggle-models-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-tint);
}

.table-caption {
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--ink-mute);
  max-width: 36rem;
  margin: 0 0 0.9rem;
  padding-left: 4.4rem;
  text-indent: -4.4rem;
}

.table-wrap { overflow-x: auto; }

.lb-table {
  width: 100%;
  min-width: 37rem;
  border-collapse: collapse;
  font-size: 0.87rem;
  line-height: 1.45;
}
.lb-table th, .lb-table td {
  padding: 0.5rem 0.55rem;
  vertical-align: middle;
}
.lb-table thead th {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 0.68rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--ink-mute);
  white-space: nowrap;
  border-top: 1.5px solid var(--ink);
  border-bottom: 1px solid var(--line-strong);
  padding-top: 0.65rem;
  padding-bottom: 0.6rem;
}
.th-num { text-align: right; width: 6.7rem; }
.th-rank { text-align: right; width: 2.3rem; }
.th-license { text-align: center; width: 7.2rem; }

th[data-sort] { cursor: pointer; user-select: none; -webkit-user-select: none; }
th[data-sort]:hover { color: var(--accent); }
th[data-sort]::after {
  content: "\25BE";
  display: inline-block;
  margin-left: 0.45em;
  font-size: 0.85em;
  opacity: 0;
  transition: opacity var(--ease);
}
th[data-sort].sort-desc::after { content: "\25BE"; opacity: 1; }
th[data-sort].sort-asc::after  { content: "\25B4"; opacity: 1; }
th[data-sort].sort-asc, th[data-sort].sort-desc { color: var(--accent); }

.lb-table tbody td { border-bottom: 1px solid var(--line); }
.lb-table tbody tr:last-child td { border-bottom: 1.5px solid var(--ink); }
.lb-table tbody tr { transition: background-color var(--ease); }
.lb-table tbody tr:hover { background: var(--accent-tint); }

td.col-rank {
  text-align: right;
  color: var(--ink-mute);
  font-feature-settings: "tnum" 1;
  font-size: 0.82rem;
}
td.col-model { font-weight: 500; padding-left: 0.4rem; padding-right: 0.4rem; }
td.col-model .model-logo {
  width: 16px;
  height: 16px;
  border-radius: 3px;
  vertical-align: -3px;
  margin-right: 0.5em;
}
td.col-license { text-align: center; }
td.col-num {
  text-align: right;
  font-feature-settings: "tnum" 1, "lnum" 1;
  white-space: nowrap;
}
td.col-score { font-weight: 600; }

.badge {
  display: inline-block;
  font-size: 0.63rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
  padding: 0.22em 0.6em;
  border: 1px solid;
  border-radius: 2px;
}
.badge-commercial {
  color: var(--accent);
  border-color: rgba(122, 46, 42, 0.4);
}
.badge-open {
  color: var(--ink-mute);
  border-color: var(--line-strong);
}

td.lb-notice {
  text-align: center;
  color: var(--ink-mute);
  padding: 2.5rem 1rem;
  font-style: italic;
}

.table-note {
  margin-top: 0.9rem;
  font-size: 0.82rem;
  color: var(--ink-mute);
  font-style: italic;
}

/* ── Scatter chart (Figure 2) ──────────────────────────────── */
.chart-figure { margin: 0 0 2.6rem; }

.chart-wrap {
  position: relative;
  border: 1px solid var(--line);
  background: var(--paper-raised);
}
.chart-wrap svg {
  display: block;
  width: 100%;
  height: auto;
}

.chart-grid { stroke: var(--line); stroke-width: 1; }
.chart-axis { stroke: var(--line-strong); stroke-width: 1; }
.chart-tick {
  font-family: var(--mono);
  font-size: 11.5px;
  fill: var(--ink-mute);
}
.chart-axis-title {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  fill: var(--ink-mute);
}
.chart-legend-note {
  font-family: var(--mono);
  font-size: 9.5px;
  letter-spacing: 0.12em;
  fill: var(--ink-mute);
}
.chart-note {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  fill: var(--ink-mute);
}

.chart-ladder { stroke: var(--ink-mute); stroke-width: 1; opacity: 0.16; }
.chart-pareto {
  stroke: var(--ink);
  stroke-width: 1;
  stroke-dasharray: 4 3;
  fill: none;
  opacity: 0.55;
}

/* Family palette: muted inks that read on the paper ground.
   Filled = commercial, hollow = open-source (see Figure 2 caption). */
.chart-pt { fill: var(--ink-mute); stroke: var(--ink-mute); stroke-width: 1; }
.chart-pt.f-openai   { fill: #46685a; stroke: #46685a; }
.chart-pt.f-claude   { fill: #9c5a38; stroke: #9c5a38; }
.chart-pt.f-gemini   { fill: #54668c; stroke: #54668c; }
.chart-pt.f-deepseek { fill: #6b5b8a; stroke: #6b5b8a; }
.chart-pt.f-glm      { fill: #807838; stroke: #807838; }
.chart-pt.f-kimi     { fill: #8a5470; stroke: #8a5470; }
.chart-pt.f-qwen     { fill: #5c7a46; stroke: #5c7a46; }
.chart-pt.f-minimax  { fill: #3e7a86; stroke: #3e7a86; }
.chart-pt.f-mimo     { fill: #a3703a; stroke: #a3703a; }
.chart-pt.f-gemma    { fill: #7d7264; stroke: #7d7264; }
.chart-pt.is-open { fill: var(--paper-raised); stroke-width: 1.75; }
.chart-pt.is-hot { stroke: var(--accent); stroke-width: 2.25; }

.lb-table tbody tr.is-hot { background: var(--accent-tint); }

.chart-tip {
  position: absolute;
  z-index: 2;
  pointer-events: none;
  background: var(--paper-raised);
  border: 1px solid var(--line-strong);
  border-radius: 2px;
  padding: 0.55rem 0.75rem 0.6rem;
  box-shadow: 0 2px 8px rgba(33, 29, 23, 0.1);
}
.chart-tip .tip-name {
  margin: 0;
  font-family: var(--serif);
  font-weight: 600;
  font-size: 0.92rem;
  line-height: 1.3;
}
.chart-tip .tip-meta {
  margin: 0.15rem 0 0;
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.chart-tip .tip-stats {
  margin: 0.3rem 0 0;
  font-family: var(--mono);
  font-size: 0.72rem;
  line-height: 1.5;
  color: var(--ink-soft);
  white-space: nowrap;
}

/* ── Per-domain heatmap (Figure 3) ─────────────────────────── */
/* Cell shading is computed in JS (ock.js): a single-pigment ramp from
   paper toward the accent (accuracy) or ink (tokens, log-mapped). The
   legend strips below use the same endpoints as the JS depth range. */
.heat-figure { margin: 2.2rem 0 0; }

.heat-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-bottom: 1.1rem;
}

.heat-legend {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin: 0;
}
.heat-legend-label {
  font-family: var(--mono);
  font-size: 0.66rem;
  color: var(--ink-mute);
  font-feature-settings: "tnum" 1;
  white-space: nowrap;
}
.heat-strip {
  width: 7.5rem;
  height: 0.55rem;
  border: 1px solid var(--line-strong);
  border-radius: 1px;
}
.heat-strip.is-accuracy { background: linear-gradient(90deg, rgb(239,231,224), rgb(134,66,61)); }
.heat-strip.is-tokens   { background: linear-gradient(90deg, rgb(233,230,223), rgb(54,50,39)); }

.heat-stage { position: relative; }

.heat-table {
  width: 100%;
  min-width: 32rem;
  border-collapse: collapse;
  font-size: 0.87rem;
  line-height: 1.45;
}
.heat-table th, .heat-table td {
  padding: 0.45rem 0.55rem;
  vertical-align: middle;
}
.heat-table thead th {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 0.68rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--ink-mute);
  white-space: nowrap;
  border-top: 1.5px solid var(--ink);
  border-bottom: 1px solid var(--line-strong);
  padding-top: 0.65rem;
  padding-bottom: 0.6rem;
}
.heat-table tbody td { border-bottom: 1px solid var(--line); }
.heat-table tbody tr:last-child td { border-bottom: 1.5px solid var(--ink); }

td.heat-cell {
  text-align: right;
  font-family: var(--mono);
  font-size: 0.78rem;
  font-feature-settings: "tnum" 1;
  white-space: nowrap;
}
td.heat-cell + td.heat-cell { border-left: 1px solid var(--paper); }
td.heat-cell.is-empty { color: var(--ink-mute); }

.heat-table tbody tr.is-hot td.col-model { background: var(--accent-tint); }
.heat-table tbody tr.is-hot { outline: 1px solid rgba(122, 46, 42, 0.5); outline-offset: -1px; }

/* ── Stats ─────────────────────────────────────────────────── */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin: 2.2rem 0 0;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}
.stat {
  text-align: center;
  padding: 1.3rem 0.5rem 1.15rem;
}
.stat + .stat { border-left: 1px solid var(--line); }
.stat-n {
  display: block;
  font-family: var(--display);
  font-size: 1.9rem;
  line-height: 1.1;
  font-weight: 500;
}
.stat-l {
  display: block;
  margin-top: 0.4rem;
  font-size: 0.64rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--ink-mute);
}

/* ── Domain list ───────────────────────────────────────────── */
.domain-list {
  list-style: none;
  padding: 0;
  margin: 1.2rem 0 0;
}
.domain-list li {
  position: relative;
  padding-left: 1.6rem;
  margin: 0.75rem 0;
}
.domain-list li::before {
  content: "";
  position: absolute;
  left: 0.2rem;
  top: 0.72em;
  width: 0.55rem;
  border-top: 1px solid var(--accent);
}

/* ── Benchmark composition bar ─────────────────────────────── */
.bench-bar {
  display: flex;
  margin: 1.7rem 0 0.5rem;
  border: 1px solid var(--line-strong);
  background: var(--paper-raised);
}
.bench-seg { padding: 0.5rem 0.75rem; }
.bench-seg + .bench-seg { border-left: 1px solid var(--paper-raised); }
.seg-math    { flex: 0 0 50%; background: #e3ddcc; }
.seg-coding  { flex: 0 0 30%; background: #d4ccb5; }
.seg-science { flex: 0 0 20%; background: #c4ba9d; }
.seg-label {
  font-family: var(--mono);
  font-size: 0.64rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-soft);
  white-space: nowrap;
}

/* ── Examples ──────────────────────────────────────────────── */
.examples {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.3rem 2.6rem;
  margin-top: 2rem;
}
.example {
  border-top: 1px solid var(--ink);
  padding-top: 0.85rem;
}
.ex-label { margin: 0 0 0.75rem; }
.ex-num {
  display: block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
}
.ex-src {
  display: block;
  margin-top: 0.2rem;
  font-size: 0.68rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--ink-mute);
}
.ex-q {
  font-family: var(--display);
  font-size: 1.02rem;
  line-height: 1.5;
  margin: 0;
}
.ex-note {
  margin-top: 0.8rem;
  font-size: 0.85rem;
  line-height: 1.6;
  font-style: italic;
  color: var(--ink-soft);
}

/* ── Findings ──────────────────────────────────────────────── */
.findings {
  list-style: none;
  padding: 0;
  margin: 0.4rem 0 0;
  counter-reset: finding;
}
.findings li {
  counter-increment: finding;
  position: relative;
  padding-left: 2.4rem;
  margin: 1.05rem 0;
}
.findings li::before {
  content: counter(finding) ".";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-family: var(--display);
  font-weight: 600;
}

/* ── Citation ──────────────────────────────────────────────── */
.bibtex-wrap { position: relative; margin-top: 1.6rem; }
.bibtex {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  padding: 1.3rem 1.5rem;
  overflow-x: auto;
  font-size: 0.8rem;
  line-height: 1.65;
}
.bibtex code {
  font-family: var(--mono);
  color: var(--ink-soft);
}
#copy-bibtex-btn {
  position: absolute;
  top: 0.6rem;
  right: 0.6rem;
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-mute);
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 0.35em 0.85em;
  transition: color var(--ease), border-color var(--ease), background-color var(--ease);
}
#copy-bibtex-btn:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-tint);
}

/* ── Footer ────────────────────────────────────────────────── */
.footer {
  margin-top: 5.5rem;
  border-top: 1px solid var(--line-strong);
  padding: 1.8rem 0 3rem;
  text-align: center;
}
.footer-line { font-size: 0.9rem; margin: 0; }
.colophon {
  margin-top: 0.5rem;
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  color: var(--ink-mute);
}

/* ── Responsive ────────────────────────────────────────────── */
@media (max-width: 720px) {
  .observations { grid-template-columns: 1fr; gap: 1.6rem; }
  .examples { grid-template-columns: 1fr; gap: 1.8rem; }
  .stats { grid-template-columns: 1fr 1fr; }
  .stat:nth-child(3) { border-left: 0; }
  .stat:nth-child(n+3) { border-top: 1px solid var(--line); }
  .lb-controls { flex-direction: column; align-items: stretch; gap: 1rem; }
  #license-filter { justify-content: center; }
  #toggle-models-btn { align-self: center; }
  .heat-controls { flex-direction: column; align-items: stretch; gap: 1rem; }
  #heat-metric, .heat-legend { justify-content: center; }
  .table-caption, .figure figcaption { padding-left: 0; text-indent: 0; }
  .bench-bar { flex-direction: column; }
  .bench-seg { flex: 1 1 auto; }
  .bench-seg + .bench-seg { border-left: 0; border-top: 1px solid var(--paper-raised); }
  .section { margin-top: 3.5rem; }
}

@media (max-width: 400px) {
  .container { width: calc(100% - 2.25rem); }
  .links { gap: 0.4rem 1.3rem; }
}

/* ── Motion & print ────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; }
}

@media print {
  .lb-controls, #heat-metric, #copy-bibtex-btn, .skip-link { display: none; }
  body { background: #fff; }
}