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

:root {
  --bg:        #faf8f5;
  --bg-subtle: #f5f3ef;
  --text:      #2c2c2c;
  --text-sec:  #737373;
  --text-ter:  #9a9a9a;
  --accent:    #8a7355;
  --accent-lt: #a99478;
  --border:    #e5e0d8;
  --border-lt: #ebe7e0;
  --link:      #6b8a94;
}

html { font-size: 17px; scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: "Crimson Pro", Georgia, serif;
  font-size: 1rem;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: "Cormorant Garamond", Georgia, serif;
  font-weight: 300;
  letter-spacing: 0.02em;
  line-height: 1.25;
}

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

code {
  font-family: "SF Mono", "Fira Code", Consolas, monospace;
  font-size: 0.83em;
  background: var(--bg-subtle);
  border: 1px solid var(--border-lt);
  border-radius: 2px;
  padding: 0 3px;
}

nav {
  border-bottom: 1px solid var(--border-lt);
  padding: 0 2rem;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  background: var(--bg);
  z-index: 100;
}

.nav-title {
  font-family: "Cormorant Garamond", Georgia, serif;
  font-weight: 300;
  font-size: 1.15rem;
  color: var(--text);
  letter-spacing: 0.04em;
}

.nav-links { display: flex; gap: 1.5rem; align-items: center; }

.nav-links a {
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-ter);
}

.nav-links a:hover { color: var(--accent); }

.container { max-width: 860px; margin: 0 auto; padding: 0 2rem; }

section { padding: 3.5rem 0; border-bottom: 1px solid var(--border-lt); }
section:last-of-type { border-bottom: none; }

.hero {
  padding: 5.5rem 0 4.5rem;
  text-align: center;
  border-bottom: 1px solid var(--border-lt);
}

.hero h1 {
  font-size: 3.4rem;
  font-weight: 300;
  color: var(--accent);
  letter-spacing: 0.04em;
  margin-bottom: 0.5rem;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-sec);
  font-style: italic;
  margin-bottom: 0.6rem;
}

.hero-desc {
  font-size: 0.97rem;
  color: var(--text-sec);
  max-width: 620px;
  margin: 0 auto 1rem;
  line-height: 1.7;
}

.hero-note { font-size: 0.95rem; opacity: 0.9; }

.hero-btns { display: flex; justify-content: center; gap: 0.9rem; flex-wrap: wrap; }

.btn {
  font-family: "Crimson Pro", Georgia, serif;
  font-size: 0.84rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  padding: 0.5rem 1.4rem;
  border-radius: 2px;
  transition: all 0.18s;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  cursor: pointer;
}

.btn-primary { background: var(--accent); color: #fff; border: 1px solid var(--accent); }
.btn-primary:hover { background: var(--accent-lt); border-color: var(--accent-lt); color: #fff; }
.btn-outline { background: transparent; color: var(--accent); border: 1px solid var(--border); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }

.pill-btn { border-radius: 999px; }

.pill-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

.pill-icon svg { width: 100%; height: 100%; fill: currentColor; }

.hero-note-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.4rem 1.1rem;
  max-width: 620px;
  margin: 0 auto 1rem;
  padding: 0;
  font-size: 0.95rem;
  color: var(--text-sec);
  opacity: 0.9;
}

.hero-note-list li { position: relative; padding-left: 0.9rem; }

.hero-note-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent-lt);
}

.section-title { font-size: 1.75rem; color: var(--text); margin-bottom: 1.4rem; }
.subsection-title { font-size: 1.2rem; color: var(--text); margin: 1.75rem 0 0.6rem; font-weight: 400; }

.prose p { margin-bottom: 1rem; color: var(--text-sec); font-size: 0.97rem; line-height: 1.75; }
.prose p:last-child { margin-bottom: 0; }
.prose strong { color: var(--text); font-weight: 500; }
.prose ul, .prose ol { padding-left: 1.2rem; margin-bottom: 1rem; }
.prose li { color: var(--text-sec); font-size: 0.95rem; margin-bottom: 0.35rem; line-height: 1.65; }
.prose li strong { color: var(--text); font-weight: 500; }

table { width: 100%; border-collapse: collapse; font-size: 0.93rem; margin: 1rem 0; }

th {
  text-align: left;
  font-family: "Crimson Pro", Georgia, serif;
  font-weight: 500;
  font-size: 0.78rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--text-ter);
  border-bottom: 1px solid var(--border);
  padding: 0.45rem 0.75rem;
}

td {
  padding: 0.65rem 0.75rem;
  border-bottom: 1px solid var(--border-lt);
  vertical-align: top;
  color: var(--text);
  font-size: 0.93rem;
}

td:first-child { font-weight: 500; white-space: nowrap; width: 32%; }
td:last-child { color: var(--text-sec); }
tr:last-child td { border-bottom: none; }

pre[class*="language-"], pre {
  background: var(--bg) !important;
  border: 1px solid var(--border-lt) !important;
  border-radius: 2px !important;
  padding: 0.75rem 1rem !important;
  font-size: 0.76rem !important;
  line-height: 1.6 !important;
  overflow-x: auto;
  margin: 1rem 0;
  box-shadow: none !important;
  text-shadow: none !important;
}

code[class*="language-"], pre[class*="language-"] *, pre code {
  background: none !important;
  border: none !important;
  padding: 0 !important;
  font-size: inherit !important;
  font-family: "SF Mono", "Fira Code", Consolas, monospace !important;
  color: var(--text-sec) !important;
  text-shadow: none !important;
}

pre[class*="language-"] .token.comment,
pre[class*="language-"] .token.prolog { color: var(--text-ter) !important; font-style: italic; }
pre[class*="language-"] .token.keyword,
pre[class*="language-"] .token.builtin { color: var(--accent) !important; font-weight: 600; }
pre[class*="language-"] .token.string,
pre[class*="language-"] .token.attr-value,
pre[class*="language-"] .token.number,
pre[class*="language-"] .token.boolean { color: #6e8c6a !important; }
pre[class*="language-"] .token.function { color: var(--text) !important; }
pre[class*="language-"] .token.operator { color: var(--text-sec) !important; }
pre[class*="language-"] .token.punctuation { color: var(--text-ter) !important; }

.callout {
  border-left: 2px solid var(--accent);
  padding: 0.75rem 1rem;
  margin: 1.25rem 0;
  background: var(--bg-subtle);
  font-size: 0.93rem;
  color: var(--text-sec);
  line-height: 1.6;
}

.callout strong { color: var(--text); font-weight: 500; }

.flowchart {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  margin: 1.75rem 0;
}

.flow-step {
  width: 100%;
  max-width: 420px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg-subtle);
  padding: 0.85rem 1.1rem;
  text-align: center;
}

.flow-step-label {
  font-size: 0.72rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.2rem;
}

.flow-step-title {
  font-family: "Cormorant Garamond", Georgia, serif;
  font-size: 1.15rem;
  color: var(--text);
}

.flow-step-detail {
  font-size: 0.82rem;
  color: var(--text-sec);
  margin-top: 0.3rem;
  line-height: 1.5;
}

.flow-step-detail code { font-size: 0.9em; }

.flow-arrow {
  width: 2px;
  height: 1.75rem;
  background: var(--border);
  position: relative;
}

.flow-arrow::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 50%;
  transform: translateX(-50%);
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 7px solid var(--border);
}

.flow-branch {
  display: flex;
  gap: 1.25rem;
  width: 100%;
  max-width: 620px;
  justify-content: center;
  flex-wrap: wrap;
}

.flow-branch .flow-step { max-width: 280px; flex: 1 1 260px; }

.muted-note,
.docs-intro {
  margin-top: 1rem;
  font-size: 0.9rem;
  color: var(--text-ter);
}

.learn-more-wrap {
  margin-top: 1.4rem;
  display: flex;
  justify-content: flex-start;
}

.docs-list { list-style: none; padding: 0; }

.docs-list li {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border-lt);
  font-size: 0.95rem;
  display: flex;
  gap: 0.75rem;
  align-items: baseline;
}

.docs-list li:last-child { border-bottom: none; }
.docs-list li a { color: var(--accent); font-weight: 500; }
.docs-list li a:hover { color: var(--accent-lt); }
.docs-list li span { color: var(--text-sec); font-size: 0.9rem; }

.publish-note { max-width: 540px; margin: 0 auto; }

footer {
  padding: 2.5rem 0;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-ter);
}

footer a { color: var(--text-ter); }
footer a:hover { color: var(--accent); }
.footer-links { display: flex; justify-content: center; gap: 1.5rem; margin-bottom: 0.75rem; }
footer .footnote { font-size: 0.78rem; margin-top: 0.35rem; }

.hf-cta {
  margin-top: 1rem;
  padding: 1.5rem;
  border: 1px solid var(--border-lt);
  border-radius: 3px;
  background: var(--bg-subtle);
  text-align: center;
}

.hf-cta p { margin-bottom: 1rem; }

.example-pair {
  display: flex;
  gap: 1.25rem;
  margin: 1.25rem 0;
  flex-wrap: wrap;
}

.example-pair figure {
  flex: 1 1 260px;
  min-width: 0;
  margin: 0;
}

.example-pair img {
  display: block;
  width: 100%;
  height: 220px;
  object-fit: contain;
  background: #fff;
  border: 1px solid var(--border-lt);
}

.example-pair figcaption {
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-ter);
  margin-top: 0.4rem;
  text-align: center;
}

.public-example-list {
  display: grid;
  gap: 1.75rem;
  margin-top: 1rem;
}

.public-example {
  border-top: 1px solid var(--border-lt);
  padding-top: 1.1rem;
  min-width: 0;
}

.public-example-meta {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.35rem;
}

.public-example-cat {
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text);
}

.public-example-id {
  color: var(--text-ter);
  font-weight: 400;
  letter-spacing: 0.02em;
}

.public-example-diff {
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-ter);
}

.public-example-prompt { margin: 0.5rem 0 0.85rem; }

.public-example-img {
  display: block;
  width: 100%;
  height: 260px;
  object-fit: contain;
  background: #fff;
  border: 1px solid var(--border-lt);
  cursor: zoom-in;
  transition: opacity 0.15s ease;
}

.public-example-img:hover { opacity: 0.8; }

.public-example-img-pair {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.public-example-img-pair figure {
  flex: 1 1 260px;
  min-width: 0;
  margin: 0;
}

.public-example-img-pair img {
  height: 220px;
}

.public-example-img-pair figcaption {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-ter);
  margin-top: 0.3rem;
  text-align: center;
}

.lightbox-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(20, 18, 15, 0.92);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 2.5rem;
}

.lightbox-overlay.active { display: flex; }

.lightbox-overlay img {
  max-width: 100%;
  max-height: 100%;
  background: #fff;
  border-radius: 3px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
}

.lightbox-close {
  position: fixed;
  top: 1.25rem;
  right: 1.75rem;
  font-size: 2.4rem;
  line-height: 1;
  color: #fff;
  background: none;
  border: none;
  cursor: pointer;
  font-family: Georgia, serif;
  opacity: 0.85;
}

.lightbox-close:hover { opacity: 1; }

/* Leaderboard */

.lb-disclaimer {
  font-size: 0.85rem;
  color: var(--text-ter);
  border-left: 2px solid var(--border);
  padding: 0.6rem 0.9rem;
  margin-bottom: 1.5rem;
  background: var(--bg-subtle);
}

.lb-empty {
  font-size: 0.9rem;
  color: var(--text-ter);
  padding: 1.5rem 0;
}

.info-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-family: "Crimson Pro", Georgia, serif;
  font-size: 0.85rem;
  color: var(--text-sec);
  background: var(--bg-subtle);
  border: 1px solid var(--border-lt);
  border-radius: 3px;
  padding: 0.45rem 0.8rem;
  margin-top: 0.6rem;
  cursor: help;
}

.info-btn:hover,
.info-btn:focus-visible {
  color: var(--text);
  border-color: var(--border);
}

.info-tooltip {
  position: absolute;
  top: calc(100% + 0.5rem);
  left: 0;
  z-index: 20;
  width: min(30rem, 90vw);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 3px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.12);
  padding: 0.85rem 1rem;
  text-align: left;
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--text-sec);
  visibility: hidden;
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity 0.12s ease, transform 0.12s ease;
}

.info-btn:hover .info-tooltip,
.info-btn:focus-visible .info-tooltip,
.info-btn:focus-within .info-tooltip {
  visibility: visible;
  opacity: 1;
  transform: translateY(0);
}

.info-tooltip ul {
  margin: 0;
  padding-left: 1.1rem;
}

.info-tooltip li {
  margin-bottom: 0.4rem;
}

.info-tooltip li:last-child {
  margin-bottom: 0;
}

.info-tooltip code {
  font-size: 0.78rem;
  white-space: normal;
}

.lb-tabs {
  display: inline-flex;
  gap: 0.3rem;
  padding: 0.3rem;
  border: 1px solid var(--border);
  border-radius: 3px;
  margin-bottom: 1.75rem;
  flex-wrap: wrap;
}

.lb-tab {
  font-family: "Crimson Pro", Georgia, serif;
  font-size: 0.88rem;
  letter-spacing: 0.02em;
  padding: 0.45rem 1.1rem;
  border: none;
  border-radius: 2px;
  background: none;
  color: var(--text-sec);
  cursor: pointer;
}

.lb-tab:hover { color: var(--text); }
.lb-tab.active { background: var(--accent); color: #fff; }

.lb-panel { display: none; }
.lb-panel.active { display: block; }

table.lb-table { width: 100%; border-collapse: collapse; font-size: 0.93rem; }

table.lb-table th {
  text-align: left;
  font-family: "Crimson Pro", Georgia, serif;
  font-weight: 500;
  font-size: 0.78rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--text-ter);
  border-bottom: 1px solid var(--border);
  padding: 0.6rem 0.9rem;
}

table.lb-table td {
  padding: 0.7rem 0.9rem;
  border-bottom: 1px solid var(--border-lt);
  color: var(--text);
}

table.lb-table tr.lb-row-rank1 td { background: var(--bg-subtle); }
table.lb-table td.lb-rank { font-weight: 500; color: var(--accent); width: 4rem; }

.lb-chart-card {
  background: var(--bg-subtle);
  border: 1px solid var(--border-lt);
  border-radius: 3px;
  padding: 1.75rem 1.75rem 1.25rem;
}

.lb-metric-toggle {
  display: inline-flex;
  gap: 0.25rem;
  padding: 0.2rem;
  border: 1px solid var(--border-lt);
  border-radius: 3px;
  background: var(--bg);
  margin-bottom: 1rem;
}

.lb-metric-btn {
  font-family: "Crimson Pro", Georgia, serif;
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  padding: 0.3rem 0.75rem;
  border: none;
  border-radius: 2px;
  background: none;
  color: var(--text-sec);
  cursor: pointer;
}

.lb-metric-btn:hover { color: var(--text); }
.lb-metric-btn.active { background: var(--accent); color: #fff; }

.lb-chart-card svg {
  display: block;
  width: 100%;
  height: auto;
  overflow: visible;
  font-family: "Crimson Pro", Georgia, serif;
}
.lb-chart-card .lb-axis-label { fill: var(--text-ter); font-size: 11px; letter-spacing: 0.02em; }
.lb-chart-card .lb-grid-line { stroke: var(--border-lt); stroke-width: 1; }
.lb-chart-card .lb-tick-label { fill: var(--text-ter); font-size: 11.5px; }

.lb-dot {
  stroke: var(--bg-subtle);
  stroke-width: 2;
  cursor: pointer;
}

.lb-whisker {
  stroke: var(--accent);
  stroke-width: 2;
  opacity: 0.45;
}

.lb-whisker-cap {
  stroke: var(--accent);
  stroke-width: 2;
  opacity: 0.45;
}

.lb-hit {
  fill: transparent;
  cursor: pointer;
}

.lb-tooltip {
  position: absolute;
  pointer-events: none;
  background: var(--accent);
  color: #fff;
  font-family: "Crimson Pro", Georgia, serif;
  font-size: 0.85rem;
  padding: 0.5rem 0.75rem;
  border-radius: 2px;
  box-shadow: 0 4px 14px rgba(44, 44, 44, 0.16);
  transform: translate(-50%, calc(-100% - 10px));
  white-space: nowrap;
  opacity: 0;
  transition: opacity 0.12s ease;
  z-index: 10;
}

.lb-tooltip.active { opacity: 1; }
.lb-tooltip strong { font-weight: 600; }
.lb-tooltip span { display: block; opacity: 0.85; font-size: 0.76rem; margin-top: 0.2rem; }

@media (max-width: 740px) {
  nav { padding: 0 1rem; }
  .container { padding: 0 1rem; }
  .hero { padding: 4.25rem 0 3.5rem; }
  .hero h1 { font-size: 2.65rem; }
  .docs-list li { display: block; }
  .lb-tabs { width: 100%; }
  .lb-tab { flex: 1; text-align: center; }
}