:root {
  --black: #000000;
  --panel: #101010;
  --panel-2: #151515;
  --white: #ffffff;
  --muted: #8a8a8a;
  --line: #252525;
  --lilac: #9e8bff;
  --cyan: #62d8ff;
  --peach: #ff9b72;
  --green: #61f58b;
  --yellow: #ffd85a;
  --red: #ff6e7c;
  --model-stage-color: #000000;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--black); }
body {
  margin: 0;
  background: var(--black);
  color: var(--white);
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.45;
}
button, input { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button:focus-visible, a:focus-visible, input:focus-visible {
  outline: 2px solid var(--white);
  outline-offset: 4px;
}
.skip-link {
  position: fixed;
  top: -80px;
  left: 16px;
  z-index: 1000;
  padding: 10px 14px;
  background: var(--white);
  color: var(--black);
  font-weight: 700;
}
.skip-link:focus { top: 16px; }

.immersive-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 80;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: start;
  min-height: 72px;
  padding: 18px 20px;
  pointer-events: none;
}
.immersive-header > * { pointer-events: auto; }
.sound-toggle {
  justify-self: start;
  border: 0;
  padding: 0;
  background: transparent;
  color: #666;
  cursor: pointer;
  font-size: .72rem;
  letter-spacing: -.08em;
}
.sound-toggle.is-on { color: var(--white); }
.minimal-brand {
  display: grid;
  justify-items: center;
  color: var(--white);
  text-decoration: none;
  opacity: .86;
}
.minimal-brand strong { font-size: .78rem; font-weight: 600; }
.minimal-brand span { margin-top: 2px; color: #666; font-size: .62rem; }
.minimal-actions {
  justify-self: end;
  display: flex;
  align-items: center;
  gap: 18px;
}
.minimal-actions a,
.minimal-actions button {
  border: 0;
  padding: 0;
  background: transparent;
  color: #747474;
  text-decoration: none;
  font-size: .7rem;
  cursor: pointer;
}
.minimal-actions a:hover,
.minimal-actions button:hover { color: var(--white); }
.minimal-actions button span {
  display: inline-grid;
  place-items: center;
  min-width: 18px;
  min-height: 18px;
  margin-left: 4px;
  border-radius: 50%;
  background: #202020;
  color: var(--white);
  font-size: .58rem;
}

.avara-hero {
  position: relative;
  min-height: 100svh;
  overflow: hidden;
  background: var(--black);
  isolation: isolate;
}
.avara-hero::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: min(68vw, 960px);
  height: min(68vw, 960px);
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,.025), transparent 64%);
  pointer-events: none;
}
.hero-introduction {
  position: absolute;
  left: 28px;
  bottom: 25px;
  z-index: 5;
}
.hero-introduction p,
.hero-introduction span {
  margin: 0;
  color: #656565;
  font-size: .66rem;
}
.hero-introduction h1 {
  margin: 3px 0 1px;
  font-size: .92rem;
  font-weight: 500;
}
.object-orbit {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  transition: width .7s cubic-bezier(.22,.72,.25,1), transform .7s cubic-bezier(.22,.72,.25,1);
}
.avara-hero.panel-open .object-orbit {
  width: calc(100% - min(31vw, 500px));
  transform: translateX(-2vw);
}
.orbit-object {
  position: absolute;
  display: grid;
  justify-items: center;
  gap: 7px;
  border: 0;
  padding: 0;
  background: transparent;
  color: var(--white);
  cursor: pointer;
  transition: transform .65s cubic-bezier(.22,.72,.25,1), opacity .45s ease, filter .45s ease;
}
.orbit-object small {
  color: transparent;
  font-size: .62rem;
  transition: color .25s ease;
}
.orbit-object:hover small,
.orbit-object:focus-visible small,
.orbit-object.is-active small { color: #aaa; }
.orbit-object:hover { z-index: 8; transform: scale(1.09); }
.avara-hero.panel-open .orbit-object:not(.is-active) {
  opacity: .17;
  filter: grayscale(1) brightness(.55);
  transform: scale(.72);
}
.avara-hero.panel-open .orbit-object.is-active {
  z-index: 10;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%) scale(2.05);
}
.orbit-object-1 { left: 38%; top: 39%; transform: rotate(-5deg); }
.orbit-object-2 { left: 48%; top: 43%; transform: rotate(5deg); }
.orbit-object-3 { left: 55%; top: 40%; transform: rotate(-2deg); }
.orbit-object-4 { left: 60%; top: 48%; transform: rotate(7deg); }
.orbit-object-5 { left: 43%; top: 51%; transform: rotate(-8deg); }
.orbit-sticker {
  position: relative;
  display: grid;
  place-items: center;
  width: clamp(96px, 8.6vw, 150px);
  height: clamp(88px, 7.8vw, 138px);
  border: 4px solid currentColor;
  filter: drop-shadow(0 8px 0 rgba(0,0,0,.45));
}
.orbit-sticker::before {
  content: "";
  position: absolute;
  inset: 7px;
  border: 2px solid rgba(0,0,0,.7);
  border-radius: inherit;
}
.orbit-sticker i {
  position: relative;
  z-index: 2;
  font-style: normal;
  font-size: clamp(3.6rem, 5vw, 5.6rem);
  filter: saturate(.92) contrast(1.08);
}
.sticker-lilac { color: #7e6ae9; background: #ece8ff; border-radius: 45% 55% 51% 49% / 59% 43% 57% 41%; }
.sticker-cyan { color: #44c6f1; background: #dff7ff; border-radius: 52% 48% 58% 42% / 42% 59% 41% 58%; }
.sticker-peach { color: #ff8d68; background: #fff1e8; border-radius: 44% 56% 43% 57% / 58% 45% 55% 42%; }
.sticker-green { color: #31df6a; background: #dfffe8; border-radius: 50%; }
.sticker-yellow { color: #ffd34c; background: #fff7ce; border-radius: 35% 65% 40% 60% / 56% 40% 60% 44%; }

.hero-detail-panel {
  position: absolute;
  inset: 4px 4px 4px auto;
  z-index: 30;
  display: flex;
  flex-direction: column;
  width: min(31vw, 500px);
  padding: 34px 38px 22px;
  background: #101010;
  border-left: 1px solid #1d1d1d;
  transform: translateX(calc(100% + 10px));
  transition: transform .7s cubic-bezier(.22,.72,.25,1);
  overflow-y: auto;
}
.avara-hero.panel-open .hero-detail-panel { transform: translateX(0); }
.panel-close {
  position: absolute;
  top: 18px;
  right: 18px;
  border: 0;
  background: transparent;
  color: #777;
  font-size: 1.3rem;
  cursor: pointer;
}
.panel-close:hover { color: var(--white); }
.panel-copy { margin-top: 4px; }
.panel-copy > p:first-child {
  margin: 0 0 10px;
  color: #777;
  font-size: .66rem;
  text-transform: uppercase;
  letter-spacing: .06em;
}
.panel-copy h2 {
  margin: 0;
  font-size: clamp(2.4rem, 3.2vw, 4rem);
  line-height: .98;
  font-weight: 400;
  letter-spacing: -.05em;
  overflow-wrap: anywhere;
}
.panel-copy > p:last-child {
  margin: 16px 0 0;
  color: #d2d2d2;
  font-size: .88rem;
}
.panel-meta {
  display: grid;
  margin: 44px 0 26px;
}
.panel-meta div {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 18px;
  padding: 12px 0;
  border-bottom: 1px solid #202020;
}
.panel-meta dt { color: #666; font-size: .66rem; }
.panel-meta dd { margin: 0; text-align: right; font-size: .72rem; }
.panel-open-button {
  min-height: 48px;
  border: 1px solid #333;
  border-radius: 999px;
  background: var(--white);
  color: var(--black);
  cursor: pointer;
  font-size: .75rem;
  font-weight: 700;
}
.panel-footer {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  margin-top: auto;
  padding-top: 20px;
  color: #555;
  font-size: .58rem;
}
.hero-nav {
  position: absolute;
  left: 50%;
  bottom: 20px;
  z-index: 15;
  display: flex;
  overflow: hidden;
  border-radius: 999px;
  background: #1b1b1b;
  transform: translateX(-50%);
}
.hero-nav button {
  width: 38px;
  height: 30px;
  border: 0;
  background: transparent;
  color: #777;
  cursor: pointer;
  font-size: 1.15rem;
}
.hero-nav button:hover { color: var(--white); }
.hero-archive-link {
  position: absolute;
  right: 28px;
  bottom: 24px;
  z-index: 16;
  display: grid;
  color: #666;
  text-align: right;
  text-decoration: none;
}
.hero-archive-link span { font-size: .6rem; }
.hero-archive-link strong { margin-top: 2px; color: #a0a0a0; font-size: .72rem; font-weight: 500; }
.hero-archive-link:hover strong { color: var(--white); }
.hero-instruction {
  position: absolute;
  top: 50%;
  left: 22px;
  z-index: 5;
  margin: 0;
  color: #383838;
  font-size: .58rem;
  writing-mode: vertical-rl;
  transform: translateY(-50%) rotate(180deg);
}

.collection-section {
  min-height: 100vh;
  padding: 110px clamp(20px, 5vw, 78px) 100px;
  border-top: 1px solid #151515;
  background: var(--black);
}
.collection-heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(250px, .3fr);
  gap: 60px;
  align-items: end;
}
.section-label {
  margin: 0 0 10px;
  color: #666;
  font-size: .64rem;
  letter-spacing: .1em;
  text-transform: uppercase;
}
.collection-heading h2,
.story-heading h3,
.related-section h3 {
  margin: 0;
  font-size: clamp(3.1rem, 6.5vw, 7.5rem);
  line-height: .88;
  font-weight: 400;
  letter-spacing: -.07em;
}
.collection-description {
  max-width: 650px;
  margin: 22px 0 0;
  color: #888;
  font-size: .9rem;
}
.progress-card {
  padding: 18px 0 0;
  border-top: 1px solid #2a2a2a;
}
.progress-card > span { color: #666; font-size: .62rem; text-transform: uppercase; }
.progress-card strong { display: block; margin-top: 5px; font-size: 1rem; font-weight: 500; }
.progress-track { height: 2px; margin-top: 14px; background: #202020; }
.progress-track span { display: block; width: 0; height: 100%; background: var(--white); transition: width .25s ease; }
.collection-tools {
  display: grid;
  grid-template-columns: minmax(250px, .36fr) 1fr;
  gap: 20px;
  margin-top: 64px;
  padding: 18px 0;
  border-top: 1px solid #222;
  border-bottom: 1px solid #222;
}
.search-box { display: flex; align-items: center; gap: 8px; }
.search-box span { color: #666; }
.search-box input {
  width: 100%;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--white);
  font-size: .78rem;
}
.search-box input::placeholder { color: #555; }
.category-row { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 7px; }
.category-button {
  min-height: 30px;
  padding: 5px 10px;
  border: 1px solid #292929;
  border-radius: 999px;
  background: transparent;
  color: #777;
  cursor: pointer;
  font-size: .62rem;
}
.category-button:hover,
.category-button.is-active { border-color: #777; color: var(--white); }
.results-row { display: flex; justify-content: space-between; margin: 18px 0 14px; }
.results-row p,
.text-button { margin: 0; color: #666; font-size: .65rem; }
.text-button { border: 0; background: transparent; cursor: pointer; text-decoration: underline; }
.object-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; background: #202020; }
.object-card {
  position: relative;
  min-width: 0;
  overflow: hidden;
  background: #050505;
  transition: background .25s ease;
}
.object-card:hover { background: #0d0d0d; }
.object-open {
  display: grid;
  width: 100%;
  min-height: 330px;
  padding: 18px;
  border: 0;
  background: transparent;
  color: var(--white);
  text-align: left;
  cursor: pointer;
}
.object-card-top { display: flex; justify-content: space-between; gap: 12px; }
.object-index,
.object-space { color: #5e5e5e; font-size: .58rem; text-transform: uppercase; }
.object-card-emoji {
  display: grid;
  place-items: center;
  min-height: 160px;
  font-size: 6rem;
  filter: saturate(.9) drop-shadow(0 12px 20px rgba(0,0,0,.5));
  transition: transform .45s cubic-bezier(.22,.72,.25,1), filter .25s ease;
}
.object-card:hover .object-card-emoji { transform: scale(1.12) rotate(-4deg); filter: saturate(1.1) drop-shadow(0 18px 24px rgba(0,0,0,.6)); }
.object-card h3 { margin: auto 0 5px; font-size: 1.55rem; font-weight: 400; letter-spacing: -.04em; }
.object-card p { margin: 0; color: #777; font-size: .7rem; }
.object-badges { display: flex; gap: 5px; margin-top: 14px; }
.object-badges span { padding: 3px 6px; border: 1px solid #2b2b2b; border-radius: 999px; color: #666; font-size: .54rem; }
.favorite-toggle {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 30px;
  height: 30px;
  border: 1px solid #292929;
  border-radius: 50%;
  background: #090909;
  color: #777;
  cursor: pointer;
}
.favorite-toggle.is-favorite { color: var(--white); border-color: #777; }
.explored-stamp { position: absolute; right: 14px; bottom: 14px; color: #4e4e4e; font-size: .52rem; text-transform: uppercase; }
.empty-state { padding: 100px 20px; text-align: center; }
.empty-state > span { color: #555; font-size: 3rem; }
.empty-state h3 { margin: 14px 0 4px; font-weight: 400; }
.empty-state p { margin: 0 0 20px; color: #666; }
.archive-reset { border: 1px solid #333; border-radius: 999px; padding: 10px 16px; background: transparent; color: var(--white); cursor: pointer; }
.museum-note {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  padding: 35px clamp(20px, 5vw, 78px);
  border-top: 1px solid #1c1c1c;
  color: #555;
  font-size: .62rem;
}
.museum-note p { max-width: 740px; margin: 0; }
.site-footer { display: none; }

.exhibit-dialog {
  width: 100vw;
  max-width: none;
  height: 100vh;
  max-height: none;
  margin: 0;
  padding: 0;
  border: 0;
  background: var(--black);
  color: var(--white);
}
.exhibit-dialog::backdrop { background: var(--black); }
.exhibit-shell { position: relative; min-height: 100%; background: var(--black); }
.dialog-close {
  position: fixed;
  top: 18px;
  right: 22px;
  z-index: 100;
  width: 32px;
  height: 32px;
  border: 0;
  background: transparent;
  color: #777;
  font-size: 1.4rem;
  cursor: pointer;
}
.dialog-close:hover { color: var(--white); }
.exhibit-top {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 28vw);
  min-height: 100vh;
  background: var(--black);
}
.model-column {
  position: relative;
  display: grid;
  place-items: center;
  min-width: 0;
  min-height: 100vh;
  padding: 24px;
  background: var(--black);
}
.model-stage {
  position: relative;
  width: min(76vw, 1050px);
  height: min(78vh, 790px);
  overflow: hidden;
  background: #000;
  cursor: grab;
  touch-action: none;
}
.model-stage:active { cursor: grabbing; }
#modelCanvas { display: block; width: 100%; height: 100%; }
.model-fallback { position: absolute; inset: 0; display: grid; place-items: center; color: #777; font-size: .72rem; }
.model-object-label {
  position: absolute;
  left: 12px;
  bottom: 12px;
  display: grid;
  color: #606060;
}
.model-object-label span { font-size: .54rem; text-transform: uppercase; }
.model-object-label strong { color: #aaa; font-size: .74rem; font-weight: 500; }
.model-controls {
  position: absolute;
  left: 24px;
  bottom: 22px;
  display: flex;
  gap: 10px;
}
.model-controls button,
.random-exhibit,
.save-exhibit {
  border: 1px solid #292929;
  border-radius: 999px;
  background: #0c0c0c;
  color: #6f6f6f;
  cursor: pointer;
  font-size: .6rem;
}
.model-controls button { min-height: 30px; padding: 6px 10px; }
.model-controls button:hover,
.model-controls button.is-active { color: var(--white); border-color: #666; }
.model-help {
  position: absolute;
  left: 50%;
  top: 22px;
  margin: 0;
  color: #3f3f3f;
  font-size: .55rem;
  transform: translateX(-50%);
}
.floating-object-nav {
  position: absolute;
  left: 50%;
  bottom: 22px;
  display: flex;
  overflow: hidden;
  border-radius: 999px;
  background: #1b1b1b;
  transform: translateX(-50%);
}
.floating-object-nav button {
  width: 38px;
  height: 30px;
  border: 0;
  background: transparent;
  color: #777;
  cursor: pointer;
  font-size: 1.1rem;
}
.floating-object-nav button:hover { color: var(--white); }
.exhibit-copy {
  position: relative;
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 100vh;
  padding: 38px 38px 24px;
  border-left: 1px solid #1c1c1c;
  background: #101010;
}
.exhibit-room { margin: 0 0 14px; color: #6d6d6d; font-size: .62rem; text-transform: uppercase; letter-spacing: .06em; }
.exhibit-title-row { display: block; }
.exhibit-emoji { display: none; }
.exhibit-title-row > div { min-width: 0; }
.exhibit-title-row h2 {
  margin: 0;
  font-size: clamp(2.5rem, 4vw, 4.8rem);
  line-height: .94;
  font-weight: 400;
  letter-spacing: -.06em;
  overflow-wrap: anywhere;
}
.exhibit-title-row p { margin: 17px 0 0; color: #d0d0d0; font-size: .82rem; }
.exhibit-meta { display: grid; margin-top: 45px; }
.exhibit-meta article {
  display: grid;
  grid-template-columns: 1fr 1.35fr;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px solid #202020;
}
.exhibit-meta span { color: #666; font-size: .6rem; }
.exhibit-meta strong { text-align: right; font-size: .68rem; font-weight: 400; }
.save-exhibit,
.random-exhibit { min-height: 40px; margin-top: 18px; padding: 8px 14px; }
.save-exhibit { background: var(--white); color: var(--black); border-color: var(--white); }
.save-exhibit.is-favorite { background: #dadada; }
.random-exhibit { margin-top: 8px; }
.exhibit-panel-footer {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: auto;
  color: #4e4e4e;
  font-size: .54rem;
}
.story-section,
.learning-section,
.notice-section,
.related-section {
  border-top: 1px solid #1c1c1c;
  background: var(--black);
}
.story-section { padding: 100px clamp(22px, 6vw, 90px); }
.story-heading h3,
.related-section h3 { font-size: clamp(3rem, 6vw, 7rem); }
.timeline-layout { display: grid; grid-template-columns: minmax(230px, .32fr) 1fr; gap: 50px; margin-top: 48px; }
.timeline-buttons { display: grid; gap: 1px; background: #1e1e1e; }
.timeline-button {
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 12px;
  align-items: center;
  min-height: 64px;
  padding: 10px;
  border: 0;
  background: #090909;
  color: #666;
  text-align: left;
  cursor: pointer;
}
.timeline-button.is-active { background: #151515; color: var(--white); }
.timeline-button span { display: grid; place-items: center; width: 34px; height: 34px; border: 1px solid #2b2b2b; border-radius: 50%; font-size: .58rem; }
.timeline-button small,
.timeline-button strong { display: block; }
.timeline-button small { font-size: .54rem; text-transform: uppercase; }
.timeline-button strong { margin-top: 2px; font-size: .68rem; font-weight: 400; }
.timeline-story { min-height: 330px; padding: 40px; background: #101010; }
.timeline-story > span { color: #666; font-size: .62rem; text-transform: uppercase; }
.timeline-story h4 { margin: 14px 0 18px; font-size: clamp(2rem, 4vw, 4.6rem); line-height: .95; font-weight: 400; letter-spacing: -.05em; }
.timeline-story p { max-width: 760px; margin: 0; color: #b5b5b5; font-size: .9rem; }
.timeline-position { height: 1px; margin-top: 50px; background: #282828; }
.timeline-position span { display: block; width: 25%; height: 100%; background: var(--white); }
.learning-section { display: grid; grid-template-columns: repeat(3, 1fr); }
.learning-card { min-height: 330px; padding: 42px; border-right: 1px solid #1c1c1c; }
.learning-card:last-child { border-right: 0; }
.learning-card span { color: #666; font-size: .58rem; text-transform: uppercase; }
.learning-card h3 { margin: 14px 0 18px; font-size: 2rem; font-weight: 400; }
.learning-card p { margin: 0; color: #a0a0a0; font-size: .8rem; }
.notice-section { padding: 100px clamp(22px, 6vw, 90px); }
.notice-section blockquote { max-width: 980px; margin: 20px 0 0; font-size: clamp(2rem, 4vw, 4.8rem); line-height: 1.05; letter-spacing: -.04em; }
.related-section { display: grid; grid-template-columns: minmax(230px, .32fr) 1fr; gap: 50px; padding: 90px clamp(22px, 6vw, 90px); }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: #202020; }
.related-button { display: grid; min-height: 190px; padding: 18px; border: 0; background: #080808; color: var(--white); text-align: left; cursor: pointer; }
.related-button:hover { background: #111; }
.related-button span { font-size: 4rem; }
.related-button strong { align-self: end; font-size: 1.1rem; font-weight: 400; }
[hidden] { display: none !important; }

@media (max-width: 1050px) {
  .object-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .exhibit-top { grid-template-columns: 1fr; }
  .model-column { min-height: 72vh; }
  .exhibit-copy { min-height: auto; border-top: 1px solid #1c1c1c; border-left: 0; }
  .model-stage { width: 94vw; height: 64vh; }
}
@media (max-width: 800px) {
  .minimal-brand { display: none; }
  .immersive-header { grid-template-columns: 1fr 1fr; }
  .minimal-actions { gap: 12px; }
  .minimal-actions button:first-child { display: none; }
  .orbit-object-1 { left: 24%; top: 36%; }
  .orbit-object-2 { left: 43%; top: 40%; }
  .orbit-object-3 { left: 58%; top: 35%; }
  .orbit-object-4 { left: 61%; top: 54%; }
  .orbit-object-5 { left: 33%; top: 55%; }
  .avara-hero.panel-open .object-orbit { width: 100%; transform: translateY(-25vh); }
  .avara-hero.panel-open .orbit-object.is-active { left: 50%; top: 50%; transform: translate(-50%, -50%) scale(1.35); }
  .hero-detail-panel { inset: auto 4px 4px; width: calc(100% - 8px); height: 48vh; padding: 25px 24px 18px; transform: translateY(calc(100% + 10px)); }
  .avara-hero.panel-open .hero-detail-panel { transform: translateY(0); }
  .panel-meta { grid-template-columns: repeat(2, 1fr); gap: 0 18px; margin: 20px 0 16px; }
  .panel-meta div { grid-template-columns: 1fr; gap: 3px; }
  .panel-meta dd { text-align: left; }
  .panel-footer { display: none; }
  .hero-archive-link { display: none; }
  .collection-heading { grid-template-columns: 1fr; }
  .collection-tools { grid-template-columns: 1fr; }
  .category-row { justify-content: flex-start; }
  .object-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .timeline-layout,
  .related-section { grid-template-columns: 1fr; }
  .learning-section { grid-template-columns: 1fr; }
  .learning-card { border-right: 0; border-bottom: 1px solid #1c1c1c; }
}
@media (max-width: 520px) {
  .immersive-header { padding: 15px 14px; }
  .minimal-actions a { display: none; }
  .hero-introduction { left: 16px; bottom: 16px; }
  .hero-instruction { display: none; }
  .orbit-sticker { width: 84px; height: 78px; border-width: 3px; }
  .orbit-sticker i { font-size: 3.2rem; }
  .orbit-object-1 { left: 16%; top: 35%; }
  .orbit-object-2 { left: 39%; top: 42%; }
  .orbit-object-3 { left: 59%; top: 34%; }
  .orbit-object-4 { left: 61%; top: 55%; }
  .orbit-object-5 { left: 27%; top: 56%; }
  .hero-detail-panel { height: 54vh; }
  .panel-copy h2 { font-size: 2.4rem; }
  .object-grid { grid-template-columns: 1fr; }
  .object-open { min-height: 310px; }
  .museum-note { flex-direction: column; }
  .model-column { min-height: 65vh; padding: 10px; }
  .model-stage { width: 100%; height: 55vh; }
  .model-controls { left: 12px; bottom: 12px; gap: 4px; }
  .model-controls button { padding: 5px 7px; font-size: .52rem; }
  .floating-object-nav { bottom: 12px; }
  .exhibit-copy { padding: 28px 20px 20px; }
  .story-section,
  .notice-section,
  .related-section { padding: 70px 18px; }
  .timeline-story { padding: 24px; }
  .related-grid { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}


/* V5: reliable previews, stronger controls, and larger side-panel typography */
.object-card-visual{
  position:relative;
  display:grid;
  place-items:center;
  min-height:178px;
  overflow:hidden;
}
.object-card-preview{
  display:block;
  width:100%;
  height:178px;
  object-fit:contain;
  transform:scale(.92);
  filter:drop-shadow(0 18px 30px rgba(0,0,0,.75));
  transition:transform .5s cubic-bezier(.22,.72,.25,1),filter .3s ease;
}
.object-card:hover .object-card-preview{
  transform:scale(1.05) rotate(-2deg);
  filter:drop-shadow(0 24px 36px rgba(0,0,0,.88));
}
.object-card-fallback{
  display:grid;
  place-items:center;
  width:86px;
  height:86px;
  border:1px solid #555;
  border-radius:50%;
  color:#9b9b9b;
  font-size:1rem;
  letter-spacing:.1em;
}
.object-card h3{font-size:1.8rem}
.object-card p{font-size:.82rem;line-height:1.45}
.object-badges span{font-size:.62rem;padding:4px 8px}

.related-preview{display:grid;place-items:center;min-height:112px}
.related-preview img{display:block;width:100%;height:112px;object-fit:contain;filter:drop-shadow(0 14px 24px rgba(0,0,0,.75))}
.related-fallback{display:grid;place-items:center;width:68px;height:68px;border:1px solid #555;border-radius:50%;color:#999;font-size:.85rem;letter-spacing:.08em}
.related-button strong{font-size:1.3rem}

.hero-detail-panel{width:min(34vw,560px);padding:42px 44px 28px}
.avara-hero.panel-open .object-orbit{width:calc(100% - min(34vw,560px))}
.panel-copy>p:first-child{font-size:.8rem;margin-bottom:13px}
.panel-copy h2{font-size:clamp(3rem,4vw,5.2rem)}
.panel-copy>p:last-child{font-size:1.08rem;line-height:1.55}
.panel-meta{margin:48px 0 30px}
.panel-meta div{padding:15px 0;grid-template-columns:1fr 1.5fr}
.panel-meta dt{font-size:.8rem}
.panel-meta dd{font-size:.94rem;line-height:1.35}
.panel-open-button{min-height:54px;font-size:.9rem}
.panel-footer{font-size:.68rem}

.exhibit-copy{padding:48px 46px 30px}
.exhibit-room{font-size:.78rem;margin-bottom:18px}
.exhibit-title-row h2{font-size:clamp(3.2rem,4.5vw,5.6rem)}
.exhibit-title-row p{font-size:1.08rem;line-height:1.55}
.exhibit-meta{margin-top:48px}
.exhibit-meta article{padding:15px 0;grid-template-columns:1fr 1.45fr}
.exhibit-meta span{font-size:.78rem}
.exhibit-meta strong{font-size:.95rem;line-height:1.35}
.save-exhibit,.random-exhibit{min-height:48px;font-size:.82rem}
.exhibit-panel-footer{font-size:.68rem}

.model-controls{gap:8px;padding:6px;border:1px solid #242424;border-radius:999px;background:rgba(10,10,10,.88);backdrop-filter:blur(8px)}
.model-controls button{min-height:38px;padding:8px 14px;font-size:.72rem}
.model-controls button:nth-child(2){border-color:#555;color:#d6d6d6}
.model-controls button:nth-child(2).is-active{background:#fff;color:#000;border-color:#fff}
.model-help{font-size:.68rem;color:#686868}

@media(max-width:1050px){
  .hero-detail-panel{width:min(40vw,560px)}
  .avara-hero.panel-open .object-orbit{width:calc(100% - min(40vw,560px))}
}
@media(max-width:800px){
  .hero-detail-panel{width:calc(100% - 8px);padding:30px 26px 22px}
  .avara-hero.panel-open .object-orbit{width:100%}
  .panel-copy>p:last-child{font-size:1rem}
  .panel-meta dt{font-size:.74rem}
  .panel-meta dd{font-size:.88rem}
  .exhibit-copy{padding:36px 26px 26px}
}
@media(max-width:520px){
  .object-card-preview{height:190px}
  .object-card-visual{min-height:190px}
  .model-controls{left:8px;right:8px;bottom:10px;justify-content:center;flex-wrap:wrap;border-radius:18px}
  .model-controls button{font-size:.68rem;padding:7px 10px}
  .floating-object-nav{bottom:72px}
  .exhibit-title-row p{font-size:1rem}
  .exhibit-meta span{font-size:.74rem}
  .exhibit-meta strong{font-size:.9rem}
}


/* V6: live featured 3D objects and prominent archive link */
.orbit-live-model{
  position:relative;
  display:grid;
  place-items:center;
  width:clamp(116px,10vw,176px);
  height:clamp(116px,10vw,176px);
  border-radius:50%;
  background:radial-gradient(circle,rgba(255,255,255,.075) 0%,rgba(255,255,255,.02) 46%,transparent 72%);
  transition:transform .35s ease,filter .35s ease;
}
.orbit-live-model canvas{
  position:relative;
  z-index:2;
  display:block;
  width:100%;
  height:100%;
  filter:drop-shadow(0 18px 22px rgba(0,0,0,.7));
}
.hero-model-fallback{
  position:absolute;
  inset:0;
  z-index:1;
  display:grid;
  place-items:center;
  font-size:clamp(3.7rem,5vw,5.6rem);
}
.orbit-object:hover .orbit-live-model,
.orbit-object:focus-visible .orbit-live-model{
  transform:translateY(-6px) scale(1.05);
  filter:brightness(1.15);
}
.orbit-object small{
  color:#777;
  font-size:.68rem;
  letter-spacing:.02em;
}
.orbit-object:hover small,
.orbit-object:focus-visible small,
.orbit-object.is-active small{color:#fff}

.hero-see-all{
  position:absolute;
  left:50%;
  top:calc(50% + clamp(132px,13vw,210px));
  z-index:18;
  display:flex;
  align-items:center;
  gap:14px;
  transform:translateX(-50%);
  padding:13px 20px;
  border:1px solid #3b3b3b;
  border-radius:999px;
  background:rgba(8,8,8,.92);
  color:#fff;
  text-decoration:none;
  box-shadow:0 10px 40px rgba(0,0,0,.4);
  transition:border-color .25s ease,background .25s ease,transform .25s ease;
  white-space:nowrap;
}
.hero-see-all span{
  font-size:.93rem;
  font-weight:600;
}
.hero-see-all strong{
  color:#9d9d9d;
  font-size:.76rem;
  font-weight:400;
}
.hero-see-all:hover,
.hero-see-all:focus-visible{
  transform:translateX(-50%) translateY(-3px);
  border-color:#fff;
  background:#151515;
}
.hero-see-all:hover strong{color:#fff}
.avara-hero.panel-open .hero-see-all{
  opacity:0;
  pointer-events:none;
  transform:translateX(-50%) translateY(12px);
}

@media(max-width:800px){
  .orbit-live-model{width:118px;height:118px}
  .hero-see-all{
    top:auto;
    bottom:66px;
    padding:12px 17px;
  }
  .hero-see-all span{font-size:.84rem}
  .hero-see-all strong{font-size:.68rem}
}
@media(max-width:520px){
  .orbit-live-model{width:92px;height:92px}
  .hero-model-fallback{font-size:3.2rem}
  .hero-see-all{
    bottom:58px;
    gap:8px;
    padding:11px 14px;
  }
  .hero-see-all strong{display:none}
}