:root {
  --paper: #e7e1d2;
  --ink: #171712;
  --dim: #625f55;
  --rule: #b6ae9e;
  --surface: #d9d2c1;
  --surface-alt: #f0ebe0;
  --yellow: #d4b800;
  --yellow-bg: rgb(212 184 0 / 0.12);
  --gold: #b38b00;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--paper);
  color: var(--ink);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.skip {
  position: absolute;
  left: -999px;
}

.skip:focus {
  left: 12px;
  top: 12px;
  z-index: 5;
  background: var(--ink);
  color: var(--paper);
  padding: 10px;
}

.masthead,
footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 15px max(20px, calc((100vw - 1440px) / 2));
  border-bottom: 1px solid var(--rule);
  font: 700 10px/1.3 ui-monospace, monospace;
  letter-spacing: 0.08em;
}

.masthead a {
  text-decoration: none;
}

.masthead span,
footer {
  color: var(--dim);
}

.masthead__brand,
.masthead__nav {
  display: flex;
  align-items: center;
  gap: 18px;
}

.masthead__home,
.masthead__article {
  color: var(--dim);
  text-decoration: none;
  transition: color 150ms ease;
}

.masthead__home:hover,
.masthead__home:focus-visible,
.masthead__article:hover,
.masthead__article:focus-visible {
  color: var(--ink);
  text-decoration: underline;
}

main {
  max-width: 1440px;
  margin: auto;
  padding: 0 20px 56px;
}

.hero {
  padding: 78px 0 40px;
  border-bottom: 1px solid var(--rule);
}

.eyebrow,
.meta,
.card p,
.card span,
.score span,
.dimensions span,
dt,
figcaption {
  font: 700 10px/1.4 ui-monospace, monospace;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.eyebrow {
  color: var(--dim);
  margin: 0 0 15px;
}

.hero h1 {
  max-width: 800px;
  margin: 0;
  font-size: clamp(48px, 8vw, 112px);
  line-height: 0.9;
  letter-spacing: -0.06em;
}

.hero > p:not(.eyebrow) {
  max-width: 660px;
  margin: 25px 0 0;
  font-size: 18px;
  line-height: 1.55;
}

.hero dl {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  max-width: 800px;
  margin: 42px 0 0;
  border-top: 1px solid var(--rule);
}

.hero dl div {
  padding: 15px 12px 0;
  border-right: 1px solid var(--rule);
}

.hero dl div:first-child {
  padding-left: 0;
}

.hero dd {
  margin: 8px 0 0;
  font-size: 40px;
  font-weight: 800;
  letter-spacing: -0.05em;
}

.archive-note {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 30px;
  padding: 24px 0;
  border-bottom: 1px solid var(--rule);
  font-size: 14px;
  line-height: 1.6;
}

.archive-note p {
  margin: 0;
}

.archive-note a {
  display: inline-block;
  margin: 0 14px 6px 0;
  font: 700 10px/1.4 ui-monospace, monospace;
  text-transform: uppercase;
}

/* ─── Benchmark Navigation Bar ─────────────────────────────────────────────── */
.benchmark-nav-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  padding: 16px 0;
  border-bottom: 1px solid var(--rule);
}

.benchmark-nav-bar__label {
  font: 700 10px/1.4 ui-monospace, monospace;
  letter-spacing: 0.1em;
  color: var(--dim);
  text-transform: uppercase;
}

.benchmark-nav-chip {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  border: 1px solid var(--rule);
  border-radius: 3px;
  background: var(--surface);
  color: var(--ink);
  font: 700 11px/1.2 ui-monospace, monospace;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
  transition: background 140ms ease, border-color 140ms ease, transform 140ms ease;
}

.benchmark-nav-chip:hover,
.benchmark-nav-chip:focus-visible {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
  transform: translateY(-1px);
}

/* ─── Structured Dimension Sections ───────────────────────────────────────── */
.benchmark-section {
  padding: 48px 0 36px;
  border-bottom: 1px solid var(--rule);
}

.benchmark-section:target {
  animation: benchmark-target-flash 1.2s ease;
}

@keyframes benchmark-target-flash {
  0% { background: rgb(212 184 0 / 0.25); }
  100% { background: transparent; }
}

.benchmark-section__head {
  margin-bottom: 28px;
}

.benchmark-section__head h2 {
  margin: 0 0 10px;
  font-size: clamp(24px, 3.5vw, 42px);
  letter-spacing: -0.04em;
  line-height: 1.05;
}

.benchmark-section__sub {
  max-width: 720px;
  margin: 0;
  font-size: 15px;
  color: var(--dim);
  line-height: 1.55;
}

/* ─── Information Cards Grid ──────────────────────────────────────────────── */
.benchmark-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.benchmark-info-card {
  display: flex;
  flex-direction: column;
  padding: 22px;
  border: 1px solid var(--rule);
  background: var(--surface);
}

.benchmark-info-card__meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}

.benchmark-tag {
  display: inline-block;
  padding: 2px 6px;
  border: 1px solid var(--ink);
  font: 700 9px/1.2 ui-monospace, monospace;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: var(--ink);
  color: var(--paper);
}

.benchmark-score {
  font: 700 10px/1.2 ui-monospace, monospace;
  letter-spacing: 0.06em;
  color: var(--dim);
}

.benchmark-info-card h3 {
  margin: 0 0 10px;
  font-size: 18px;
  letter-spacing: -0.02em;
}

.benchmark-info-card p {
  margin: 0 0 16px;
  font-size: 13px;
  line-height: 1.5;
  color: #383630;
}

.benchmark-info-card__rules {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--rule);
  font: 11px/1.55 ui-monospace, monospace;
  color: var(--dim);
}

.benchmark-info-card__rules strong {
  color: var(--ink);
}

/* ─── Tables ──────────────────────────────────────────────────────────────── */
.benchmark-prompt-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--rule);
  background: var(--surface);
}

.benchmark-data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  text-align: left;
}

.benchmark-data-table th,
.benchmark-data-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
}

.benchmark-data-table th {
  background: var(--surface-alt);
  font: 700 10px/1.3 ui-monospace, monospace;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--dim);
}

.benchmark-data-table tr:last-child td {
  border-bottom: none;
}

.benchmark-data-table tr:hover td {
  background: rgb(255 255 255 / 0.35);
}

.benchmark-pill {
  display: inline-block;
  padding: 2px 6px;
  border: 1px solid var(--rule);
  font: 700 9px/1.2 ui-monospace, monospace;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: var(--paper);
}

/* ─── Rubric Grid ─────────────────────────────────────────────────────────── */
.benchmark-rubric-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.benchmark-rubric-item {
  padding: 18px;
  border: 1px solid var(--rule);
  background: var(--surface);
}

.benchmark-rubric-item__head {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 8px;
}

.benchmark-rubric-item__head span {
  font: 700 10px/1 ui-monospace, monospace;
  color: var(--dim);
}

.benchmark-rubric-item__head strong {
  font-size: 15px;
  letter-spacing: -0.01em;
}

.benchmark-rubric-item__head b {
  margin-left: auto;
  font: 700 11px/1 ui-monospace, monospace;
  color: var(--gold);
}

.benchmark-rubric-item p {
  margin: 0;
  font-size: 12px;
  line-height: 1.5;
  color: var(--dim);
}

/* ─── Records Grid ────────────────────────────────────────────────────────── */
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  border-left: 1px solid var(--rule);
}

.card {
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.card a {
  display: block;
  height: 100%;
  text-decoration: none;
}

.card img {
  display: block;
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
  filter: saturate(0.88);
}

.card div {
  padding: 15px;
}

.card p {
  margin: 0;
  color: var(--dim);
}

.card h2 {
  margin: 8px 0 20px;
  font-size: 17px;
  line-height: 1.15;
}

.card strong {
  font-size: 36px;
  letter-spacing: -0.05em;
}

.card strong small {
  font-size: 12px;
  letter-spacing: 0;
}

.card span {
  display: block;
  margin-top: 6px;
  color: var(--dim);
}

.card a:hover h2,
.card a:focus-visible h2 {
  text-decoration: underline;
}

/* ─── Data Viewer Dialog ──────────────────────────────────────────────────── */
dialog.data-viewer {
  width: min(1000px, 94vw);
  max-height: 86vh;
  padding: 24px;
  border: 1px solid var(--rule);
  background: var(--paper);
  color: var(--ink);
}

dialog.data-viewer::backdrop {
  background: rgb(0 0 0 / 0.6);
  backdrop-filter: blur(3px);
}

.data-viewer__head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 20px;
}

.data-viewer__head h2 {
  margin: 4px 0 0;
  font-size: 22px;
}

.viewer-close {
  border: 1px solid var(--rule);
  background: var(--surface);
  font-size: 20px;
  padding: 2px 10px;
  cursor: pointer;
}

.viewer-tabs {
  display: flex;
  gap: 6px;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 16px;
}

.viewer-tabs button {
  padding: 8px 14px;
  border: 1px solid transparent;
  border-bottom: none;
  background: transparent;
  font: 700 11px/1 ui-monospace, monospace;
  text-transform: uppercase;
  cursor: pointer;
}

.viewer-tabs button[aria-selected="true"] {
  background: var(--surface);
  border-color: var(--rule);
}

.viewer-panels {
  overflow-y: auto;
  max-height: 56vh;
}

.viewer-panels table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}

.viewer-panels th,
.viewer-panels td {
  padding: 8px 10px;
  border-bottom: 1px solid var(--rule);
  text-align: left;
}

.viewer-panels th {
  background: var(--surface);
  font: 700 10px/1 ui-monospace, monospace;
  text-transform: uppercase;
}

/* ─── Breadcrumbs ─────────────────────────────────────────────────────────── */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 20px 0 16px;
  font: 700 10px/1.4 ui-monospace, monospace;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--dim);
}

.breadcrumbs a {
  color: var(--dim);
  text-decoration: none;
}

.breadcrumbs a:hover,
.breadcrumbs a:focus-visible {
  color: var(--ink);
  text-decoration: underline;
}

.breadcrumbs span.current {
  color: var(--ink);
}

.breadcrumbs span.sep {
  color: var(--rule);
}

/* ─── Record Detail Page ─────────────────────────────────────────────────── */
.record {
  max-width: 1100px;
  margin: auto;
  padding-top: 16px;
}

.back {
  display: inline-block;
  margin-bottom: 20px;
  font: 700 10px/1.4 ui-monospace, monospace;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--dim);
  text-decoration: none;
  transition: color 140ms ease;
}

.back:hover,
.back:focus-visible {
  color: var(--ink);
  text-decoration: underline;
}

.record h1 {
  max-width: 850px;
  margin: 12px 0 10px;
  font-size: clamp(34px, 5.5vw, 64px);
  line-height: 1.0;
  letter-spacing: -0.05em;
}

.meta {
  color: var(--dim);
  margin: 0 0 22px;
}

.static-page {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin: 0 0 28px;
  padding: 6px 12px;
  border: 1px solid var(--rule);
  border-radius: 3px;
  background: var(--surface);
  color: var(--ink);
  font: 700 11px/1.2 ui-monospace, monospace;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
  transition: background 140ms ease, border-color 140ms ease, transform 140ms ease;
}

.static-page:hover,
.static-page:focus-visible {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
  transform: translateY(-1px);
}

.score {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: end;
  gap: 24px;
  padding: 20px 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.score strong {
  font-size: 72px;
  line-height: 0.8;
  letter-spacing: -0.07em;
}

.score strong small {
  font-size: 18px;
  letter-spacing: 0;
}

.score b {
  font: 700 11px/1.4 ui-monospace, monospace;
  letter-spacing: 0.08em;
}

.evidence {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(160px, 0.31fr);
  gap: 18px;
  margin: 30px 0;
}

.evidence figure {
  margin: 0;
}

.evidence img {
  width: 100%;
  height: auto;
  display: block;
  border: 1px solid var(--rule);
}

figcaption {
  margin-top: 7px;
  color: var(--dim);
}

.dimensions,
.review,
.provenance {
  padding: 25px 0;
  border-top: 1px solid var(--rule);
}

.dimensions h2,
.review h2,
.provenance h2 {
  margin: 0 0 16px;
  font-size: 20px;
  letter-spacing: -0.02em;
}

.dimensions > div {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--rule);
  border-left: 1px solid var(--rule);
}

.dimensions > div > div {
  padding: 14px;
  border-right: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.dimensions strong {
  display: block;
  margin-top: 8px;
  font-size: 28px;
  letter-spacing: -0.05em;
}

.dimensions small {
  font-size: 12px;
  letter-spacing: 0;
}

.review {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.review p,
.review li {
  font-size: 15px;
  line-height: 1.6;
}

.review p {
  margin: 0;
}

.review ul {
  margin: 0;
  padding-left: 18px;
}

.provenance dl {
  display: grid;
  grid-template-columns: 170px 1fr;
  gap: 10px 20px;
  margin: 0;
}

.provenance dt {
  padding-top: 2px;
}

.provenance dd {
  margin: 0;
  font: 12px/1.5 ui-monospace, monospace;
  overflow-wrap: anywhere;
}

.provenance dd a {
  display: inline-block;
  margin-right: 8px;
}

.record-nav {
  display: flex;
  justify-content: space-between;
  margin: 36px 0;
  font: 700 11px/1.4 ui-monospace, monospace;
  text-transform: uppercase;
}

/* ─── Footer ──────────────────────────────────────────────────────────────── */
footer {
  border-top: 1px solid var(--rule);
  border-bottom: 0;
}

.footer__left,
.footer__right {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
}

.footer__left a,
.footer__right a {
  color: var(--dim);
  text-decoration: none;
}

.footer__left a:hover,
.footer__right a:hover {
  color: var(--ink);
  text-decoration: underline;
}

/* ─── Responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .masthead,
  footer {
    padding-inline: 16px;
    flex-direction: column;
    gap: 12px;
    align-items: flex-start;
  }

  .masthead span {
    display: none;
  }

  .masthead__brand,
  .masthead__nav {
    flex-wrap: wrap;
    gap: 10px;
  }

  main {
    padding-inline: 16px;
  }

  .hero {
    padding-top: 52px;
  }

  .hero dl {
    grid-template-columns: 1fr 1fr;
  }

  .hero dl div:nth-child(2) {
    border-right: 0;
  }

  .hero dl div:nth-child(-n + 2) {
    border-bottom: 1px solid var(--rule);
    padding-bottom: 12px;
  }

  .archive-note {
    grid-template-columns: 1fr;
  }

  .benchmark-cards-grid,
  .benchmark-rubric-grid,
  .grid {
    grid-template-columns: 1fr;
  }

  .review {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .evidence {
    grid-template-columns: minmax(0, 1fr) minmax(100px, 0.32fr);
    gap: 8px;
  }

  .dimensions > div {
    grid-template-columns: 1fr 1fr;
  }

  .score {
    grid-template-columns: 1fr auto;
  }

  .score span {
    grid-column: 1 / -1;
  }

  .score b {
    padding-bottom: 5px;
  }

  .provenance dl {
    grid-template-columns: 1fr;
    gap: 3px;
  }

  .provenance dd {
    margin-bottom: 12px;
  }
}