:root {
  --concept-bg: #f4f4ef;
  --concept-ink: #11110f;
  --concept-muted: #77776f;
  --concept-accent: #ff4d00;
  --concept-line: rgba(17, 17, 15, 0.2);
}

html:has(.concept-catalogue) {
  background: var(--concept-bg);
}

.concept-catalogue {
  margin: 0;
  color: var(--concept-ink);
  background: var(--concept-bg);
  font-family: Helvetica, Arial, sans-serif;
}

.concept-catalogue main {
  width: min(100% - 32px, 1600px);
  margin: 0 auto;
}

.concept-header {
  min-height: 74vh;
  display: grid;
  grid-template-rows: auto 1fr;
}

.concept-meta {
  display: flex;
  justify-content: center;
  padding: 18px 0;
  font-size: 12px;
  line-height: 1;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.concept-meta p {
  margin: 0;
}

.concept-jupiter {
  position: fixed;
  top: 28%;
  left: 77%;
  z-index: 100;
  display: block;
  width: 38px;
  line-height: 0;
  transform: translate(-50%, -50%);
  transition: transform 180ms ease;
}

.concept-jupiter:hover,
.concept-jupiter:focus-visible {
  transform: translate(-50%, -50%) scale(1.12) rotate(8deg);
  outline: none;
}

.concept-jupiter img {
  display: block;
  width: 100%;
  height: auto;
}

.concept-title-row {
  align-self: end;
  display: block;
  padding: 80px 0 48px;
}

.concept-title-row h1 {
  margin: 0 0 0 -0.055em;
  font-size: clamp(74px, 13.5vw, 216px);
  font-weight: 500;
  line-height: 0.72;
  letter-spacing: -0.085em;
}

.concept-controls {
  position: sticky;
  top: 0;
  z-index: 10;
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 24px;
  padding: 12px 0;
  border-top: 1px solid var(--concept-ink);
  border-bottom: 1px solid var(--concept-ink);
  background: color-mix(in srgb, var(--concept-bg) 94%, transparent);
  backdrop-filter: blur(14px);
}

.concept-filters {
  display: flex;
  gap: 6px;
  align-items: center;
}

.concept-filters button {
  min-height: 36px;
  padding: 0 14px;
  border: 1px solid var(--concept-line);
  border-radius: 999px;
  color: inherit;
  background: transparent;
  font: inherit;
  font-size: 12px;
  cursor: pointer;
}

.concept-filters button:hover,
.concept-filters button:focus-visible,
.concept-filters button.is-active {
  border-color: var(--concept-ink);
  color: var(--concept-bg);
  background: var(--concept-ink);
  outline: none;
}

.concept-search {
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--concept-line);
}

.concept-search:focus-within {
  border-color: var(--concept-ink);
}

.concept-search input {
  width: 100%;
  min-height: 36px;
  padding: 0;
  border: 0;
  outline: 0;
  color: inherit;
  background: transparent;
  font: inherit;
  font-size: 13px;
}

.concept-search input::placeholder {
  color: var(--concept-muted);
}

.concept-search span:last-child {
  font-size: 22px;
}

.concept-index {
  padding: 80px 0 160px;
}

.concept-index-head {
  display: block;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--concept-ink);
  color: var(--concept-muted);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.concept-index-head p {
  margin: 0;
}

.concept-list {
  counter-reset: catalogue-record;
}

.concept-list .catalogue-row {
  counter-increment: catalogue-record;
  position: relative;
  display: block;
  padding: 0;
  border: 0;
}

.concept-list .catalogue-row[hidden] {
  display: none;
}

.concept-list .catalogue-link,
.concept-list .catalogue-static {
  min-height: 86px;
  display: grid;
  grid-template-columns: minmax(72px, 0.6fr) minmax(0, 2fr) 56px;
  gap: 24px;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--concept-line);
  transition: padding 180ms ease, color 180ms ease, background 180ms ease;
}

.concept-list .catalogue-row::before {
  content: counter(catalogue-record, decimal-leading-zero);
  position: absolute;
  top: 14px;
  right: 0;
  color: var(--concept-muted);
  font-size: 9px;
  letter-spacing: 0.08em;
  pointer-events: none;
}

.concept-list .catalogue-date {
  font-size: 12px;
  letter-spacing: 0.08em;
  white-space: nowrap;
}

.concept-list .catalogue-title {
  font-size: clamp(23px, 3.2vw, 52px);
  line-height: 0.95;
  letter-spacing: -0.045em;
}

.concept-list .catalogue-symbol {
  width: auto;
  justify-self: start;
  color: var(--concept-muted);
  font-family: Helvetica, Arial, sans-serif;
  font-size: 11px;
  font-weight: 400;
  line-height: 1;
  opacity: 0.45;
  transform: translateY(-0.35em);
}

.concept-list .catalogue-link .catalogue-symbol {
  color: inherit;
}

.concept-list .catalogue-symbol.is-special {
  color: var(--concept-accent);
  font-size: 12px;
  opacity: 0.82;
}

.concept-list .catalogue-link:hover,
.concept-list .catalogue-link:focus-visible {
  margin: 0 -16px;
  padding-right: 16px;
  padding-left: 16px;
  color: var(--concept-bg);
  background: var(--concept-ink);
  text-decoration: none;
  outline: none;
}

.concept-list .catalogue-link:hover .catalogue-symbol,
.concept-list .catalogue-link:focus-visible .catalogue-symbol {
  color: var(--concept-bg);
}

.concept-empty {
  margin: 0;
  padding: 80px 0;
  color: var(--concept-muted);
  font-size: clamp(24px, 4vw, 48px);
  letter-spacing: -0.04em;
}

.concept-footer {
  min-height: 240px;
  display: flex;
  justify-content: center;
  align-items: start;
  padding: 22px 0 80px;
  border-top: 1px solid var(--concept-ink);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.concept-footer p {
  margin: 0;
}

@media (max-width: 720px) {
  .concept-catalogue main {
    width: min(100% - 24px, 1600px);
  }

  .concept-header {
    min-height: 62vh;
  }

  .concept-meta {
    justify-content: center;
  }

  .concept-title-row {
    padding-bottom: 36px;
  }

  .concept-title-row h1 {
    font-size: clamp(66px, 22vw, 110px);
  }

  .concept-controls {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .concept-filters {
    overflow-x: auto;
    scrollbar-width: none;
  }

  .concept-index {
    padding: 56px 0 100px;
  }

  .concept-list .catalogue-link,
  .concept-list .catalogue-static {
    min-height: 78px;
    grid-template-columns: 62px minmax(0, 1fr) 24px;
    gap: 10px;
  }

  .concept-list .catalogue-title {
    font-size: clamp(22px, 7vw, 34px);
  }

  .concept-list .catalogue-row::before {
    display: none;
  }

  .concept-footer {
    justify-content: center;
  }
}

/* One-row catalogue preview prototype: zeichnung only. */
.search-only-catalogue .concept-list .has-preview:not(.is-preview-open) .catalogue-link {
  border-bottom: 1px solid var(--concept-line);
}

.search-only-catalogue .concept-list .has-preview.is-preview-open .catalogue-link {
  border-bottom: 0;
}

.catalogue-preview {
  margin-left: 191px;
  padding: 12px 0 28px;
  border-bottom: 1px solid var(--concept-line);
}

.catalogue-preview[hidden] {
  display: none;
}

.catalogue-preview p {
  margin: 0;
}

.catalogue-preview-line {
  display: flex;
  gap: 36px;
  align-items: baseline;
}

.catalogue-preview-line + .catalogue-preview-line {
  margin-top: 5px;
}

.catalogue-preview-chapters {
  width: min(100%, 760px);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
  margin: 0 0 46px;
}

.catalogue-preview-chapters.is-three-part {
  width: min(100%, 1160px);
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.catalogue-preview-chapters.is-four-part {
  width: 100%;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.catalogue-preview-kicker {
  margin-bottom: 7px !important;
  font-family: Helvetica, Arial, sans-serif;
  font-size: 10px;
  line-height: 1;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.catalogue-preview-chapters a,
.catalogue-preview-chapters > .is-unassigned {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  align-items: baseline;
  padding: 9px 8px 10px;
  border-top: 1px solid var(--concept-line);
  border-bottom: 1px solid var(--concept-line);
  color: #000;
  font-family: Helvetica, Arial, sans-serif;
  font-size: 12px;
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: 0.03em;
  text-decoration: none;
  text-transform: uppercase;
  transition: background-color 120ms ease;
}

.catalogue-preview-chapters > .is-unassigned {
  cursor: default;
  opacity: 0.5;
}

.catalogue-preview-chapters a:hover,
.catalogue-preview-chapters a:focus-visible {
  color: #000;
  background: rgba(0, 0, 0, 0.045);
  outline: 0;
}

.catalogue-preview-chapters a span:last-child {
  transition: transform 120ms ease;
}

/* Draw the outbound arrow so Safari cannot substitute a coloured emoji. */
.text-arrow-up-right {
  position: relative;
  display: inline-block;
  width: 0.72em;
  height: 0.72em;
  flex: 0 0 auto;
}

.text-arrow-up-right::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 0.48em;
  height: 0.48em;
  border-top: 1px solid currentColor;
  border-right: 1px solid currentColor;
}

.text-arrow-up-right::after {
  content: "";
  position: absolute;
  left: 0.04em;
  bottom: 0.04em;
  width: 0.78em;
  height: 1px;
  background: currentColor;
  transform: rotate(-45deg);
  transform-origin: left center;
}

.catalogue-preview-chapters a:hover span:last-child,
.catalogue-preview-chapters a:focus-visible span:last-child {
  transform: translate(3px, -3px);
}

.catalogue-preview-meta,
.catalogue-preview-open {
  color: #000;
  font-family: Helvetica, Arial, sans-serif;
  font-size: 10px;
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.catalogue-preview-meta {
  display: inline-block;
  text-decoration: none;
}

.catalogue-preview-meta:hover,
.catalogue-preview-meta:focus-visible {
  text-decoration: underline;
  text-underline-offset: 0.22em;
  outline: 0;
}

.catalogue-preview-open {
  display: inline-block;
  margin-top: 0;
  text-decoration: none;
}

.catalogue-preview-open:hover,
.catalogue-preview-open:focus-visible {
  text-decoration: underline;
  text-underline-offset: 0.22em;
  outline: 0;
}

@media (max-width: 720px) {
  .catalogue-preview {
    margin-left: 114px;
    padding-top: 10px;
    padding-bottom: 24px;
  }

  .catalogue-preview-chapters {
    width: calc(100vw - 142px);
    grid-template-columns: 1fr;
    gap: 8px;
    margin-bottom: 42px;
  }

  .catalogue-preview-chapters.is-three-part {
    width: calc(100vw - 142px);
    grid-template-columns: 1fr;
  }

  .catalogue-preview-chapters.is-four-part {
    width: calc(100vw - 142px);
    grid-template-columns: 1fr;
  }

}

/* Supplied transparent catalogue heart artwork. */
.concept-catalogue .catalogue-symbol.is-heart {
  width: 18px;
  height: 18px;
  overflow: hidden;
  color: transparent;
  background: url("images/heart-bk.svg") center / contain no-repeat;
  font-size: 0 !important;
  line-height: 0;
}

/* Search is pinned to the title's lowercase l. */
.concept-title-lockup {
  position: relative;
  width: max-content;
  max-width: 100%;
}

.concept-catalogue .concept-title-row .concept-search {
  left: 46%;
  top: 0;
  bottom: auto;
  width: min(170px, 22vw);
  transform: translate(0.35em, -0.08em);
}

.concept-catalogue .concept-title-row .concept-search input,
.concept-catalogue .concept-title-row .concept-search input::placeholder {
  color: #000;
  opacity: 1;
}

@media (max-width: 720px) {
  .concept-catalogue .concept-title-row .concept-search {
    left: 46%;
    top: 0;
    bottom: auto;
    width: 30vw;
    transform: translate(0.28em, -0.08em);
  }
}

/* Search appears within the masthead on hover. */
.concept-title-row {
  position: relative;
}

.concept-title-row .concept-search {
  position: absolute;
  left: 56%;
  bottom: 46px;
  width: min(280px, 32vw);
  display: block;
  opacity: 0;
  pointer-events: none;
  transition: opacity 120ms ease;
}

.concept-title-row:hover .concept-search,
.concept-title-row:focus-within .concept-search,
.concept-title-row.has-search-query .concept-search {
  opacity: 1;
  pointer-events: auto;
}

.concept-title-row .concept-search input {
  position: static;
  width: 100%;
  height: auto;
  min-height: 1.2em;
  padding: 0;
  overflow: visible;
  clip-path: none;
  opacity: 1;
  border: 0;
  outline: 0;
  color: #000;
  background: transparent;
  font-family: Helvetica, Arial, sans-serif;
  font-size: 16px;
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.01em;
  text-transform: none;
}

.concept-title-row .concept-search:focus-within {
  outline: 0;
}

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

@media (max-width: 720px) {
  .concept-title-row .concept-search {
    left: 58%;
    bottom: 34px;
    width: 38vw;
  }

  .concept-title-row .concept-search input {
    font-size: 14px;
  }

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

/* Static record count */
.concept-controls {
  grid-template-columns: auto minmax(150px, 1fr) auto;
  gap: 34px;
}

.concept-filters {
  gap: 26px;
}

.concept-control-count {
  margin: 0;
  justify-self: end;
}

.concept-search {
  width: min(210px, 100%);
  justify-self: start;
}

@media (max-width: 720px) {
  .concept-controls {
    grid-template-columns: 1fr auto;
    gap: 12px 20px;
  }

  .concept-filters {
    grid-column: 1;
    gap: 20px;
  }

  .concept-control-count {
    grid-column: 2;
    grid-row: 1;
    margin: 0;
  }

  .concept-search {
    grid-column: 1 / -1;
    grid-row: 2;
    width: 100%;
  }
}

/* Final masthead-search placement. */
.concept-catalogue .concept-title-row {
  position: relative;
}

.concept-catalogue .concept-title-row .concept-search {
  position: absolute;
  left: 56%;
  bottom: 46px;
  width: min(280px, 32vw);
  display: block;
  grid-column: auto;
  grid-row: auto;
  opacity: 0;
  pointer-events: none;
  transition: opacity 120ms ease;
}

.concept-catalogue .concept-title-row:hover .concept-search,
.concept-catalogue .concept-title-row:focus-within .concept-search,
.concept-catalogue .concept-title-row.has-search-query .concept-search {
  opacity: 1;
  pointer-events: auto;
}

.concept-catalogue .concept-title-row .concept-search input {
  position: static;
  width: 100%;
  height: auto;
  min-height: 1.2em;
  padding: 0;
  overflow: visible;
  clip-path: none;
  opacity: 1;
  border: 0;
  outline: 0;
  color: #000;
  background: transparent;
  font-family: Helvetica, Arial, sans-serif;
  font-size: 16px;
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.01em;
  text-transform: none;
}

.concept-catalogue .concept-title-row .concept-search:focus-within {
  outline: 0;
}

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

@media (max-width: 720px) {
  .concept-catalogue .concept-title-row .concept-search {
    left: 58%;
    bottom: 34px;
    width: 38vw;
  }

  .concept-catalogue .concept-title-row .concept-search input {
    font-size: 14px;
  }
}

/* Contextual counts and expanded toolbar rhythm */
.concept-controls {
  grid-template-columns: minmax(0, 1fr) minmax(180px, 240px);
  gap: clamp(48px, 8vw, 120px);
}

.concept-filters {
  gap: clamp(30px, 4vw, 64px);
}

.concept-control-count {
  margin-left: calc(clamp(30px, 4vw, 64px) * -0.62);
  margin-right: calc(clamp(30px, 4vw, 64px) * -0.58);
  justify-self: auto;
}

.concept-search {
  width: 100%;
  justify-self: end;
}

.concept-search span:last-of-type {
  flex: 0 0 auto;
  font-size: 13px;
}

@media (max-width: 720px) {
  .concept-controls {
    grid-template-columns: minmax(0, 1fr) 90px;
    gap: 24px;
  }

  .concept-filters {
    grid-column: auto;
    gap: 24px;
    overflow-x: auto;
  }

  .concept-control-count {
    grid-column: auto;
    grid-row: auto;
    margin-right: -12px;
    margin-left: -12px;
  }

  .concept-search {
    grid-column: auto;
    grid-row: auto;
  }
}

/* Solid-black typography */
.concept-catalogue,
.concept-meta,
.concept-index-head,
.concept-filters button,
.concept-search input,
.concept-search input::placeholder,
.concept-search span:last-child,
.concept-list .catalogue-date,
.concept-list .catalogue-title,
.concept-list .catalogue-symbol,
.concept-list .catalogue-symbol.is-special,
.concept-empty,
.concept-footer {
  color: #000;
}

.concept-search input::placeholder,
.concept-list .catalogue-symbol,
.concept-list .catalogue-symbol.is-special {
  opacity: 1;
}

@media (prefers-reduced-motion: reduce) {
  .concept-list .catalogue-link,
  .concept-list .catalogue-static {
    transition: none;
  }
}

/* Option 3: expressive masthead, restrained index */
:root {
  --concept-bg: #f8f8f4;
  --concept-ink: #151512;
  --concept-muted: #85857e;
  --concept-line: rgba(21, 21, 18, 0.17);
}

.concept-catalogue main {
  width: min(100% - 40px, 1440px);
}

.concept-header {
  min-height: 64vh;
}

.concept-meta {
  color: var(--concept-muted);
  font-size: 11px;
}

.concept-title-row {
  padding-bottom: 42px;
}

.concept-title-row h1 {
  font-size: clamp(72px, 12vw, 184px);
  font-weight: 400;
  line-height: 0.78;
  letter-spacing: -0.08em;
}

.concept-controls {
  gap: 48px;
  padding: 15px 0 13px;
  border-top-color: var(--concept-ink);
  border-bottom-color: var(--concept-line);
  background: rgba(248, 248, 244, 0.94);
}

.concept-filters {
  gap: 26px;
}

.concept-filters button {
  position: relative;
  min-height: 30px;
  padding: 0 0 3px;
  border: 0;
  border-bottom: 1px solid transparent;
  border-radius: 0;
  color: var(--concept-muted);
  background: transparent;
  font-size: 11px;
}

.concept-filters button:hover,
.concept-filters button:focus-visible,
.concept-filters button.is-active {
  border-color: currentColor;
  color: var(--concept-ink);
  background: transparent;
}

.concept-search input {
  min-height: 30px;
  font-size: 11px;
}

.concept-search span:last-child {
  font-size: 17px;
}

.concept-index {
  padding: 64px 0 140px;
}

.concept-index-head {
  padding-bottom: 10px;
  font-size: 10px;
}

.concept-list {
  counter-reset: none;
}

.concept-list .catalogue-row {
  counter-increment: none;
}

.concept-list .catalogue-row::before {
  content: none;
}

.concept-list .catalogue-link,
.concept-list .catalogue-static {
  min-height: 64px;
  grid-template-columns: 108px minmax(0, 1fr) 28px;
  gap: 20px;
  padding: 9px 0;
  transition: opacity 150ms ease, transform 150ms ease;
}

.concept-list .catalogue-date {
  color: var(--concept-muted);
  font-family: "Courier New", Courier, monospace;
  font-size: 10px;
  letter-spacing: 0.03em;
}

.concept-list .catalogue-title {
  font-size: clamp(19px, 2.15vw, 32px);
  line-height: 1.02;
  letter-spacing: -0.038em;
}

.concept-list .catalogue-symbol,
.concept-list .catalogue-symbol.is-special,
.concept-list .catalogue-link .catalogue-symbol {
  color: var(--concept-ink);
  font-size: 10px;
  opacity: 0.66;
  transform: none;
}

.concept-list .catalogue-symbol.is-special {
  font-size: 11px;
  opacity: 0.9;
}

.concept-list .catalogue-symbol.is-default {
  font-family: "Courier New", Courier, monospace;
  font-size: 10px;
  font-weight: 400;
  line-height: 1;
  letter-spacing: 0.03em;
}

.concept-list .catalogue-link:hover,
.concept-list .catalogue-link:focus-visible {
  margin: 0;
  padding-right: 0;
  padding-left: 0;
  color: inherit;
  background: transparent;
  opacity: 1;
  transform: translateX(5px);
}

.concept-list .catalogue-link:hover .catalogue-symbol,
.concept-list .catalogue-link:focus-visible .catalogue-symbol {
  color: inherit;
}

.concept-footer {
  min-height: 190px;
  border-top-color: var(--concept-line);
  font-size: 10px;
}

@media (max-width: 720px) {
  .concept-catalogue main {
    width: calc(100% - 28px);
  }

  .concept-header {
    min-height: 56vh;
  }

  .concept-title-row h1 {
    font-size: clamp(66px, 21vw, 104px);
  }

  .concept-controls {
    gap: 9px;
  }

  .concept-list .catalogue-link,
  .concept-list .catalogue-static {
    min-height: 62px;
    grid-template-columns: 72px minmax(0, 1fr) 20px;
    gap: 10px;
  }

  .concept-list .catalogue-title {
    font-size: clamp(18px, 6vw, 26px);
  }
}

/* Final colour lock: all typography is pure black. */
:root {
  --concept-ink: #000;
  --concept-muted: #000;
  --concept-accent: #000;
}

.concept-catalogue,
.concept-catalogue :where(h1, p, a, button, input, span),
.concept-meta,
.concept-index-head,
.concept-filters button,
.concept-filters button:hover,
.concept-filters button:focus-visible,
.concept-filters button.is-active,
.concept-search input,
.concept-search input::placeholder,
.concept-search span:last-child,
.concept-list .catalogue-date,
.concept-list .catalogue-title,
.concept-list .catalogue-symbol,
.concept-list .catalogue-symbol.is-special,
.concept-list .catalogue-link .catalogue-symbol,
.concept-list .catalogue-link:hover .catalogue-symbol,
.concept-list .catalogue-link:focus-visible .catalogue-symbol,
.concept-empty,
.concept-footer {
  color: #000;
}

.concept-search input::placeholder,
.concept-list .catalogue-symbol,
.concept-list .catalogue-symbol.is-special,
.concept-list .catalogue-link .catalogue-symbol {
  opacity: 1;
}

/* Consolidated utility controls and tertiary typography */
.concept-controls {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 26px;
  border-bottom: 0;
}

.concept-filters {
  gap: 26px;
}

.concept-search {
  position: relative;
  width: auto;
  display: inline-flex;
  flex: 0 0 auto;
  gap: 7px;
  border-bottom: 0;
  cursor: text;
}

.concept-search input {
  position: absolute;
  width: 1px;
  height: 1px;
  min-height: 0;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  opacity: 0;
}

.concept-meta,
.concept-index-head,
.concept-list .catalogue-date,
.concept-filters button,
.concept-search input,
.concept-search span:last-child {
  color: #000;
  font-family: "Courier New", Courier, monospace;
  font-size: 10px;
  font-weight: 400;
  line-height: 1;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.concept-meta,
.concept-index-head,
.concept-filters button,
.concept-search input,
.concept-search span:last-child {
  font-family: Helvetica, Arial, sans-serif;
  font-size: 10px;
  letter-spacing: 0.03em;
}

.concept-list .catalogue-date {
  font-family: "Courier New", Courier, monospace;
  font-size: 10px;
  letter-spacing: 0.03em;
}

.concept-index-head {
  padding-bottom: 10px;
}

.concept-list .catalogue-date {
  white-space: nowrap;
}

@media (max-width: 720px) {
  .concept-controls {
    gap: 20px;
    overflow-x: auto;
  }

  .concept-filters {
    flex: 0 0 auto;
    gap: 20px;
  }

}

/* Compact working toolbar */
.concept-controls {
  display: grid;
  grid-template-columns: auto minmax(150px, 1fr) auto;
  gap: 34px;
  padding-top: 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid #000;
}

.concept-search {
  position: static;
  width: min(210px, 100%);
  display: flex;
  align-items: center;
  gap: 8px;
  justify-self: start;
  cursor: text;
}

.concept-search input {
  position: static;
  width: 100%;
  height: auto;
  min-height: 24px;
  padding: 0;
  overflow: visible;
  clip-path: none;
  opacity: 1;
  border: 0;
  outline: 0;
  background: transparent;
}

.concept-search:focus-within {
  outline: 1px solid #000;
  outline-offset: 5px;
}

.concept-control-count {
  margin: 0;
  justify-self: end;
  white-space: nowrap;
}

.concept-control-count,
.concept-search input,
.concept-search span:last-of-type {
  color: #000;
  font-family: Helvetica, Arial, sans-serif;
  font-size: 10px;
  font-weight: 400;
  line-height: 1;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.concept-index {
  padding-top: 0;
}

.concept-list {
  border-top: 0;
}

@media (max-width: 720px) {
  .concept-controls {
    grid-template-columns: 1fr auto;
    gap: 12px 20px;
    overflow: visible;
  }

  .concept-filters {
    grid-column: 1;
  }

  .concept-control-count {
    grid-column: 2;
    grid-row: 1;
  }

  .concept-search {
    grid-column: 1 / -1;
    grid-row: 2;
    width: 100%;
  }
}

/* Search is revealed inside the masthead. */
.concept-catalogue .concept-title-row {
  position: relative;
}

.concept-catalogue .concept-title-row .concept-search {
  position: absolute;
  left: 56%;
  bottom: 46px;
  width: min(280px, 32vw);
  display: block;
  grid-column: auto;
  grid-row: auto;
  opacity: 0;
  pointer-events: none;
  transition: opacity 120ms ease;
}

.concept-catalogue .concept-title-row:hover .concept-search,
.concept-catalogue .concept-title-row:focus-within .concept-search,
.concept-catalogue .concept-title-row.has-search-query .concept-search {
  opacity: 1;
  pointer-events: auto;
}

.concept-catalogue .concept-title-row .concept-search input {
  position: static;
  width: 100%;
  height: auto;
  min-height: 1.2em;
  padding: 0;
  overflow: visible;
  clip-path: none;
  opacity: 1;
  border: 0;
  outline: 0;
  color: #000;
  background: transparent;
  font-family: Helvetica, Arial, sans-serif;
  font-size: 16px;
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.01em;
  text-transform: none;
}

.concept-catalogue .concept-title-row .concept-search:focus-within {
  outline: 0;
}

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

@media (max-width: 720px) {
  .concept-catalogue .concept-title-row .concept-search {
    left: 58%;
    bottom: 34px;
    width: 38vw;
  }

  .concept-catalogue .concept-title-row .concept-search input {
    font-size: 14px;
  }
}

.concept-title-lockup {
  position: relative;
  width: 100%;
  max-width: 100%;
}

.concept-catalogue .concept-title-row .concept-search {
  position: absolute;
  left: 54.5%;
  top: -12px;
  bottom: auto;
  width: min(190px, 20vw);
  display: block;
  grid-column: auto;
  grid-row: auto;
  opacity: 0;
  pointer-events: none;
  transform: none;
}

.concept-catalogue .concept-title-row:hover .concept-search {
  opacity: 0;
  pointer-events: none;
}

.concept-catalogue .concept-title-row.is-search-hover-zone .concept-search,
.concept-catalogue .concept-title-row.has-search-session .concept-search,
.concept-catalogue .concept-title-row.has-search-query .concept-search {
  opacity: 1;
  pointer-events: auto;
}

.concept-catalogue .concept-title-row:not(.has-search-session):has(.catalogue-toggle:hover) .concept-search,
.concept-catalogue .concept-title-row:not(.has-search-session):has(.catalogue-live-filter:hover) .concept-search,
.concept-catalogue .concept-title-row:not(.has-search-session):has(.catalogue-selected-filter:hover) .concept-search,
.concept-catalogue .concept-title-row:not(.has-search-session):has(.catalogue-utility-zone:hover) .concept-search,
.concept-catalogue .concept-title-row.is-over-utility-control .concept-search {
  opacity: 0;
  pointer-events: none;
}

.concept-catalogue .concept-title-row .concept-search input {
  position: static;
  width: 100%;
  height: auto;
  min-height: 1.2em;
  padding: 0;
  overflow: visible;
  clip-path: none;
  opacity: 1;
  border: 0;
  outline: 0;
  color: #000;
  background: transparent;
  font-family: Helvetica, Arial, sans-serif;
  font-size: 10px;
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.concept-catalogue .concept-title-row .concept-search input::placeholder {
  color: #000;
  opacity: 1;
}

.concept-catalogue .concept-title-row .concept-search:focus-within {
  outline: 0;
}

@media (max-width: 720px) {
  .concept-catalogue .concept-title-row .concept-search {
    left: 56%;
    top: -10px;
    bottom: auto;
    width: 34vw;
    transform: none;
  }

  .concept-catalogue .concept-title-row .concept-search input {
    font-size: 10px;
  }
}

.search-only-catalogue main {
  width: min(calc(100% - 16px), calc(50% + 800px));
}

.search-only-catalogue .concept-header {
  min-height: 67vh;
}

.search-only-catalogue .concept-title-lockup {
  transform: translateY(-5vh);
}

.search-only-catalogue .concept-meta,
.search-only-catalogue .concept-meta p {
  font-size: 12px;
}

.search-only-catalogue #time-note {
  min-height: 1em;
}

.search-only-catalogue .concept-index {
  display: none;
  position: relative;
  z-index: 1;
  width: 100%;
  margin-top: -10vh;
  margin-left: 0;
  padding-top: clamp(40px, 4vw, 56px);
  transform: none;
}

.search-only-catalogue:has(.concept-title-row.has-search-query) .concept-index,
.search-only-catalogue:has(.concept-title-row.has-search-session) .concept-index {
  display: block;
}

.search-only-catalogue.show-all-records .concept-index {
  display: block;
}

.search-only-catalogue.show-live-records .concept-index {
  display: block;
}

.search-only-catalogue.show-selected-records .concept-index {
  display: block;
}

.search-only-catalogue .concept-title-row {
  position: relative;
  z-index: 2;
  width: 100%;
  margin-left: 0;
  border-bottom: 1px solid #000;
  transform: none;
}

.search-only-catalogue .concept-list {
  border-top: 0;
}

.search-only-catalogue .concept-list .catalogue-link,
.search-only-catalogue .concept-list .catalogue-static {
  min-height: 70px;
  grid-template-columns: 108px minmax(0, 1fr) 28px;
  gap: 20px;
  padding: 10px 0;
}

.search-only-catalogue .concept-list .catalogue-symbol {
  grid-column: 3;
  grid-row: 1;
  width: 28px;
  justify-self: end;
  color: #000;
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 16px;
  font-weight: 900;
  line-height: 1;
  opacity: 1;
}

.search-only-catalogue .concept-list .catalogue-symbol.is-heart-symbol {
  font-size: 15.2px;
}

.search-only-catalogue .concept-list .catalogue-symbol.is-star-symbol {
  font-size: 16.8px;
}

.search-only-catalogue .concept-list .catalogue-symbol.is-reference-symbol {
  font-size: 17px;
  font-weight: 400;
}

.search-only-catalogue .concept-list .catalogue-symbol.is-default {
  font-family: "Courier New", Courier, monospace;
  font-size: 13px;
  font-weight: 400;
}

.search-only-catalogue .concept-list .catalogue-title {
  grid-column: 2;
  grid-row: 1;
  padding-left: 0;
  font-size: clamp(20px, 2.35vw, 38px);
}

.search-only-catalogue .concept-list .catalogue-date {
  grid-column: 1;
  grid-row: 1;
  justify-self: start;
  text-align: left;
}

.search-only-catalogue .concept-empty {
  border-top: 0;
}

.search-only-catalogue .catalogue-toggle {
  position: absolute;
  right: 0;
  top: -12px;
  bottom: auto;
  padding: 0;
  border: 0;
  color: #000;
  background: transparent;
  font-family: Helvetica, Arial, sans-serif;
  font-size: 12px;
  font-weight: 400;
  line-height: 1;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  cursor: pointer;
}

.search-only-catalogue .catalogue-live-filter {
  position: absolute;
  top: 36px;
  right: 0;
  padding: 0;
  border: 0;
  color: #000;
  background: transparent;
  font-family: Helvetica, Arial, sans-serif;
  font-size: 12px;
  font-weight: 400;
  line-height: 1;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  cursor: pointer;
}

.search-only-catalogue .catalogue-selected-filter {
  position: absolute;
  top: 12px;
  right: 0;
  padding: 0;
  border: 0;
  color: #000;
  background: transparent;
  font-family: Helvetica, Arial, sans-serif;
  font-size: 12px;
  font-weight: 400;
  line-height: 1;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  cursor: pointer;
}

.search-only-catalogue .catalogue-utility-zone {
  position: absolute;
  z-index: 3;
  top: -40px;
  right: 0;
  bottom: -42px;
  min-width: 150px;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 12px;
  padding: 28px 0 0 24px;
}

.search-only-catalogue .catalogue-utility-zone .catalogue-toggle,
.search-only-catalogue .catalogue-utility-zone .catalogue-selected-filter,
.search-only-catalogue .catalogue-utility-zone .catalogue-live-filter {
  position: static;
}

.search-only-catalogue .catalogue-live-filter:hover,
.search-only-catalogue .catalogue-live-filter:focus-visible,
.search-only-catalogue .catalogue-live-filter[aria-pressed="true"] {
  text-decoration: underline;
  text-underline-offset: 0.24em;
  outline: 0;
}

.search-only-catalogue .catalogue-selected-filter:hover,
.search-only-catalogue .catalogue-selected-filter:focus-visible,
.search-only-catalogue .catalogue-selected-filter[aria-pressed="true"] {
  text-decoration: underline;
  text-underline-offset: 0.24em;
  outline: 0;
}

.search-only-catalogue .catalogue-toggle:hover,
.search-only-catalogue .catalogue-toggle:focus-visible,
.search-only-catalogue .catalogue-toggle[aria-expanded="true"] {
  text-decoration: underline;
  text-underline-offset: 0.24em;
  outline: 0;
}

.search-only-catalogue .concept-title-row .concept-search input {
  font-size: 12px;
  line-height: 1;
  letter-spacing: 0.03em;
}

.search-only-catalogue .concept-title-row .concept-search {
  left: 52.5%;
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.search-only-catalogue .concept-title-row .concept-search input {
  min-width: 0;
  flex: 1 1 auto;
}

.search-only-catalogue .search-result-count {
  display: block;
  flex: 0 0 auto;
  margin: 0;
  color: #000;
  font-family: Helvetica, Arial, sans-serif;
  font-size: 13px;
  font-weight: 400;
  line-height: 1;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  white-space: nowrap;
}

.search-only-catalogue .search-result-count[hidden] {
  display: none;
}

.search-only-catalogue .concept-footer {
  position: relative;
  z-index: 4;
  min-height: 150px;
  flex-direction: column;
  justify-content: flex-start;
  align-items: stretch;
  pointer-events: none;
}

.search-only-catalogue .footer-biography {
  width: 100%;
  padding: clamp(40px, calc(6vw - 12px), 72px) 0 0;
}

.search-only-catalogue .footer-biography[hidden] {
  display: none;
}

.search-only-catalogue .footer-biography p {
  margin: 0;
  max-width: 1280px;
  font-family: Helvetica, Arial, sans-serif;
  font-size: clamp(18px, 1.55vw, 24px);
  font-weight: 400;
  line-height: 1.18;
  letter-spacing: -0.025em;
  text-transform: none;
}

.search-only-catalogue .biography-nowrap {
  white-space: nowrap;
}

.search-only-catalogue .footer-biography-toggle {
  position: relative;
  z-index: 1;
  align-self: center;
  padding: 0;
  border: 0;
  color: #000;
  background: transparent;
  font-family: Helvetica, Arial, sans-serif;
  font-size: 12px;
  font-weight: 400;
  line-height: 1;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  cursor: pointer;
  pointer-events: auto;
}

.search-only-catalogue .footer-biography-toggle:hover,
.search-only-catalogue .footer-biography-toggle:focus-visible,
.search-only-catalogue .footer-biography-toggle[aria-expanded="true"] {
  text-decoration: underline;
  text-underline-offset: 0.24em;
  outline: 0;
}

@media (max-width: 720px) {
  .search-only-catalogue main {
    width: calc(100% - 14px);
  }

  .search-only-catalogue .concept-header {
    min-height: 65vh;
  }

.search-only-catalogue .concept-index {
  position: relative;
  z-index: 1;
    width: 100%;
    padding-top: 32px;
    padding-bottom: 90px;
  }

  .search-only-catalogue .concept-title-row {
    width: 100%;
  }

  .search-only-catalogue .concept-list .catalogue-link,
  .search-only-catalogue .concept-list .catalogue-static {
    min-height: 62px;
    grid-template-columns: 72px minmax(0, 1fr) 24px;
    gap: 10px;
    padding: 9px 0;
  }

  .search-only-catalogue .concept-list .catalogue-symbol {
    width: 24px;
    font-size: 15px;
  }

  .search-only-catalogue .concept-list .catalogue-symbol.is-default {
    font-size: 12px;
  }

  .search-only-catalogue .concept-list .catalogue-title {
    padding-left: 0;
    font-size: clamp(18px, 6vw, 26px);
  }

  .search-only-catalogue .concept-footer {
    min-height: 120px;
  }

  .search-only-catalogue .footer-biography {
    padding-top: 32px;
  }

  .search-only-catalogue .footer-biography p {
    font-size: 15px;
    line-height: 1.25;
    letter-spacing: -0.015em;
  }

  .search-only-catalogue .catalogue-toggle {
    top: -14px;
    bottom: auto;
  }

  .search-only-catalogue .catalogue-live-filter {
    top: 34px;
  }

  .search-only-catalogue .catalogue-selected-filter {
    top: 10px;
  }

  .search-only-catalogue .catalogue-utility-zone {
    top: -40px;
    padding-top: 26px;
  }

  .search-only-catalogue .concept-title-row .concept-search input {
    font-size: 12px;
  }

  .search-only-catalogue .concept-title-row .concept-search {
    left: 53.5%;
    top: -14px;
  }
}

/* Compact chronological index: date / symbol / title. */
.search-only-catalogue .concept-list .catalogue-link,
.search-only-catalogue .concept-list .catalogue-static {
  min-height: 62px;
  grid-template-columns: 120px 24px minmax(0, 1fr);
  column-gap: 18px;
  padding: 7px 0;
}

.search-only-catalogue .concept-list .catalogue-date {
  grid-column: 1;
  grid-row: 1;
  white-space: nowrap;
}

.search-only-catalogue .concept-list .catalogue-symbol,
.search-only-catalogue .concept-list .catalogue-symbol.is-heart {
  grid-column: 2;
  grid-row: 1;
  justify-self: center;
  width: 24px;
}

.search-only-catalogue .concept-list .catalogue-symbol.is-heart {
  width: 14.4px;
  height: 14.4px;
}

.search-only-catalogue .concept-list .catalogue-symbol.is-star {
  font-size: 17.6px;
}

.search-only-catalogue .concept-list .catalogue-title {
  grid-column: 3;
  grid-row: 1;
  padding-left: 11px;
  transition: transform 120ms ease;
}

.search-only-catalogue .concept-list .catalogue-link:hover .catalogue-title,
.search-only-catalogue .concept-list .catalogue-link:focus-visible .catalogue-title {
  transform: translateX(4px);
}

/* Keep the hover target stationary. Moving the entire link made the first
   visible row oscillate beneath the pointer at its exposed edge. */
.search-only-catalogue .concept-list .catalogue-link:hover,
.search-only-catalogue .concept-list .catalogue-link:focus-visible {
  transform: none;
}

@media (max-width: 720px) {
  .search-only-catalogue .concept-list .catalogue-link,
  .search-only-catalogue .concept-list .catalogue-static {
    min-height: 56px;
    grid-template-columns: 72px 18px minmax(0, 1fr);
    column-gap: 12px;
    padding: 7px 0;
  }

  .search-only-catalogue .concept-list .catalogue-symbol,
  .search-only-catalogue .concept-list .catalogue-symbol.is-heart {
    width: 18px;
    height: 18px;
  }

  .search-only-catalogue .concept-list .catalogue-symbol.is-heart {
    width: 14.4px;
    height: 14.4px;
  }

  .search-only-catalogue .concept-list .catalogue-symbol.is-star {
    font-size: 16.5px;
  }

  .search-only-catalogue .concept-list .catalogue-title {
    padding-left: 7px;
  }
}

/* Search belongs only to the minimal landing state, not the list modes. */
.search-only-catalogue.show-all-records .concept-search,
.search-only-catalogue.show-live-records .concept-search,
.search-only-catalogue.show-selected-records .concept-search {
  visibility: hidden;
  opacity: 0 !important;
  pointer-events: none !important;
}

/* Keep the archive modes quiet and separate from the Catalogue wordmark. */
.search-only-catalogue .catalogue-utility-zone {
  position: static;
  width: fit-content;
  min-width: 0;
  display: flex;
  flex-direction: row;
  align-items: baseline;
  justify-content: center;
  gap: clamp(18px, 2.2vw, 34px);
  margin-top: 60px;
  margin-left: auto;
  margin-right: auto;
  padding: 0;
}

.search-only-catalogue .catalogue-utility-zone .catalogue-toggle,
.search-only-catalogue .catalogue-utility-zone .catalogue-selected-filter,
.search-only-catalogue .catalogue-utility-zone .catalogue-live-filter {
  position: static;
  white-space: nowrap;
}

@media (max-width: 720px) {
  .search-only-catalogue .catalogue-utility-zone {
    gap: 21.6px;
    margin-top: 54px;
  }
}

/* The archive is intentionally pulled upward into the masthead's visual
   space. Keep its rows above that transparent masthead layer so the whole
   first title—not only its lower half—remains one stable click target. */
.search-only-catalogue.show-all-records .concept-index,
.search-only-catalogue.show-selected-records .concept-index,
.search-only-catalogue.show-live-records .concept-index {
  z-index: 3;
}