.reference-intro {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(260px, 0.8fr);
  gap: 24px;
  align-items: stretch;
}

.reference-boundary,
.reference-correlation,
.reference-controls,
.reference-status,
.reference-metrics article {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.reference-boundary {
  padding: 22px;
  color: var(--panel-ink);
}

.reference-boundary strong {
  color: var(--red);
}

.reference-boundary p {
  margin: 8px 0 0;
  color: var(--panel-muted);
}

.reference-metrics {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 12px;
  margin-top: 24px;
}

.reference-metrics article {
  padding: 18px;
  min-width: 0;
}

.reference-metrics strong,
.reference-metrics span {
  display: block;
}

.reference-metrics strong {
  color: var(--panel-ink);
  font-size: 1.7rem;
  line-height: 1;
}

.reference-metrics span {
  margin-top: 8px;
  color: var(--panel-muted);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.reference-controls {
  display: grid;
  grid-template-columns: minmax(260px, 2fr) repeat(5, minmax(145px, 1fr)) auto;
  gap: 12px;
  padding: 18px;
}

.reference-controls label {
  display: grid;
  gap: 6px;
  min-width: 0;
  color: var(--panel-muted);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.reference-controls input,
.reference-controls select {
  min-width: 0;
  width: 100%;
  min-height: 42px;
  padding: 9px 11px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg-elevated);
  color: var(--text);
  font: inherit;
}

.reference-controls .button {
  align-self: end;
  min-height: 42px;
  justify-content: center;
}

.reference-status {
  margin: 14px 0;
  padding: 12px 16px;
  color: var(--panel-muted);
}

.reference-status strong {
  color: var(--panel-ink);
}

.reference-analysis-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.reference-correlation {
  padding: 18px;
}

.reference-correlation h3,
.reference-correlation p {
  margin-top: 0;
}

.reference-correlation p {
  color: var(--panel-muted);
}

.reference-correlation-list {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.reference-correlation-list button {
  display: inline-flex;
  gap: 6px;
  align-items: center;
  padding: 6px 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--chip);
  color: var(--text);
  cursor: pointer;
}

.reference-correlation-list button:hover,
.reference-correlation-list button:focus-visible {
  border-color: var(--accent);
}

.reference-correlation-list small {
  color: var(--muted);
}

.reference-related-list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding-left: 24px;
}

.reference-related-list a {
  font-weight: 700;
}

.reference-related-list small {
  display: block;
  color: var(--panel-muted);
}

.reference-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.reference-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.reference-card[hidden] {
  display: none;
}

.reference-card-heading {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
}

.reference-context {
  color: var(--accent-dark);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.reference-related {
  border: 0;
  background: transparent;
  color: var(--accent);
  cursor: pointer;
  font: inherit;
  font-size: 0.8rem;
  font-weight: 800;
}

.reference-card h3,
.reference-card p {
  margin: 0;
}

.reference-card h3 {
  color: var(--panel-ink);
  font-size: 1.08rem;
  line-height: 1.35;
}

.reference-card h3 a {
  color: inherit;
}

.reference-card p {
  color: var(--panel-muted);
  font-size: 0.9rem;
}

.reference-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.reference-tag {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 5px;
  align-items: center;
  max-width: 100%;
  padding: 5px 8px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--chip);
  color: var(--text);
  cursor: pointer;
  font: inherit;
  font-size: 0.72rem;
  line-height: 1.25;
  text-align: left;
}

.reference-tag span {
  color: var(--muted);
  font-size: 0.62rem;
  font-weight: 800;
  text-transform: uppercase;
}

.reference-tag:hover,
.reference-tag:focus-visible,
.reference-tag[aria-pressed="true"] {
  border-color: var(--accent);
  background: var(--chip-strong);
}

.reference-more-tags summary {
  color: var(--accent);
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 800;
}

.reference-more-tags .reference-tags {
  margin-top: 10px;
}

.reference-empty {
  padding: 36px;
  border: 1px dashed var(--line);
  border-radius: 14px;
  color: var(--muted);
  text-align: center;
}

@media (min-width: 1280px) {
  .nav,
  .page-hero-inner,
  main,
  .footer-inner {
    width: min(1440px, calc(100% - 40px));
  }

  .reference-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 1180px) {
  .reference-controls {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .reference-controls label:first-child {
    grid-column: span 2;
  }
}

@media (max-width: 820px) {
  .reference-intro,
  .reference-analysis-grid,
  .reference-grid {
    grid-template-columns: 1fr;
  }

  .reference-metrics {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 620px) {
  .reference-controls {
    grid-template-columns: 1fr;
  }

  .reference-controls label:first-child {
    grid-column: auto;
  }

  .reference-metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}