:root {
  --obsidian: #0a0f0e;
  --night: #111817;
  --jade-deep: #162824;
  --jade-soft: #2b4943;
  --bronze: #8e6a3e;
  --bronze-soft: #c29a63;
  --ash-gold: #e1d0b4;
  --mist: #aeb4a7;
  --paper: #f1eadf;
  --line: rgba(225, 208, 180, 0.14);
  --line-strong: rgba(194, 154, 99, 0.36);
  --panel: rgba(17, 24, 23, 0.86);
  --panel-strong: rgba(11, 16, 15, 0.94);
  --shadow: 0 30px 100px rgba(0, 0, 0, 0.28);
  --shadow-soft: 0 20px 46px rgba(0, 0, 0, 0.22);
  --radius-xl: 36px;
  --radius-lg: 28px;
  --radius-md: 20px;
  --radius-sm: 14px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --rail-width: 316px;
}

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

html {
  min-height: 100%;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 18% 10%, rgba(43, 73, 67, 0.26), transparent 22%),
    radial-gradient(circle at 82% 4%, rgba(194, 154, 99, 0.16), transparent 18%),
    linear-gradient(180deg, #070a09 0%, #101615 44%, #171d1c 100%);
  color: var(--paper);
  font-family: "Noto Sans SC", "IBM Plex Sans", sans-serif;
}

body::before,
body::after {
  position: fixed;
  inset: 0;
  z-index: -3;
  pointer-events: none;
  content: "";
}

body::before {
  background:
    linear-gradient(90deg, rgba(225, 208, 180, 0.03) 1px, transparent 1px),
    linear-gradient(180deg, rgba(225, 208, 180, 0.025) 1px, transparent 1px);
  background-size: 68px 68px;
  opacity: 0.35;
}

body::after {
  z-index: -2;
  background:
    radial-gradient(circle at center, transparent 0 44%, rgba(0, 0, 0, 0.36) 100%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(0, 0, 0, 0.12));
}

button,
textarea,
input {
  font: inherit;
}

button {
  border: 0;
  cursor: pointer;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
}

h1,
h2,
h3,
.rail-brand-copy strong,
.caption-card strong,
.hero-figure figcaption,
.rail-metric strong,
.ledge-card strong {
  font-family: "Noto Serif SC", serif;
}

#snow-canvas,
#gold-canvas {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.6;
}

.floating-entry {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 60;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  min-width: 138px;
  padding: 12px 20px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(10, 15, 14, 0.78);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(18px);
  transition: transform 180ms var(--ease), border-color 180ms var(--ease);
}

.floating-entry:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
}

.museum-shell {
  display: grid;
  grid-template-columns: var(--rail-width) minmax(0, 1fr);
  gap: 18px;
  width: min(1500px, calc(100% - 28px));
  margin: 14px auto 40px;
}

.control-rail {
  position: sticky;
  top: 14px;
  display: grid;
  align-content: start;
  gap: 14px;
  height: calc(100vh - 28px);
  overflow: auto;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 30px;
  background:
    radial-gradient(circle at 50% 0%, rgba(194, 154, 99, 0.14), transparent 20%),
    linear-gradient(180deg, rgba(12, 17, 16, 0.96), rgba(15, 21, 20, 0.88));
  box-shadow: var(--shadow);
  backdrop-filter: blur(22px);
}

.control-rail::-webkit-scrollbar {
  width: 8px;
}

.control-rail::-webkit-scrollbar-thumb {
  border-radius: 999px;
  background: rgba(194, 154, 99, 0.28);
}

.rail-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.rail-brand-mark {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border: 1px solid rgba(225, 208, 180, 0.18);
  border-radius: 18px;
  background:
    radial-gradient(circle at 32% 28%, rgba(255, 243, 216, 0.9), transparent 28%),
    linear-gradient(145deg, rgba(26, 40, 36, 0.96), rgba(194, 154, 99, 0.96));
  color: #111412;
  font-family: "ZCOOL XiaoWei", serif;
  font-size: 1.2rem;
}

.rail-brand-copy {
  display: grid;
  gap: 2px;
}

.rail-brand-copy strong {
  font-size: 1.12rem;
}

.rail-brand-copy small,
.eyebrow,
.rail-card-head small,
.rail-metric span,
.caption-card small,
.archive-panel small,
.ledge-card small,
.stage-card-status small {
  color: var(--mist);
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.rail-status-card,
.rail-voice-card,
.rail-metrics,
.caption-card,
.ledge-card,
.stage-card,
.timeline-node,
.theme-card,
.prompt-card,
.journey-card,
.segment-card,
.route-card,
.archive-panel,
.archive-metric {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.03);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.02);
}

.rail-status-card,
.rail-voice-card {
  display: grid;
  gap: 12px;
  padding: 16px;
}

.rail-status-head,
.stage-card-status {
  display: flex;
  align-items: center;
  gap: 10px;
}

.status-dot,
.status-icon {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 14px currentColor;
}

.rail-status-card[data-status="offline"] {
  color: var(--mist);
}

.rail-status-card[data-status="loading"] {
  color: var(--bronze-soft);
}

.rail-status-card[data-status="online"] {
  color: #7ab594;
}

.rail-status-card[data-status="error"] {
  color: #d48f84;
}

.rail-status-card p,
.system-status,
.chapter-summary,
.chapter-intro p:last-child,
.ledge-card p,
.caption-card p,
.journey-card p,
.theme-card p,
.prompt-card p,
.route-list li,
.archive-list,
.archive-panel,
.hero-figure figcaption,
.intro-ledge p {
  color: var(--mist);
  line-height: 1.8;
}

.rail-actions,
.voice-actions {
  display: grid;
  gap: 10px;
}

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

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

.action-button {
  min-height: 46px;
  padding: 11px 16px;
  border-radius: 999px;
  font-weight: 700;
  transition:
    transform 180ms var(--ease),
    box-shadow 180ms var(--ease),
    border-color 180ms var(--ease),
    opacity 180ms var(--ease);
}

.action-button:hover {
  transform: translateY(-1px);
}

.action-button:disabled {
  opacity: 0.42;
  cursor: not-allowed;
  transform: none;
}

.action-button.primary {
  background: linear-gradient(145deg, #b69162, #6f5536);
  color: #fff6eb;
  box-shadow: 0 12px 26px rgba(142, 106, 62, 0.24);
}

.action-button.secondary,
.action-button.ghost {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
  color: var(--paper);
}

.action-button.wide {
  width: 100%;
}

.voice-status-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  width: fit-content;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(194, 154, 99, 0.08);
  color: var(--ash-gold);
  font-size: 0.82rem;
}

.voice-status-badge[data-voice-status="listening"] {
  color: #86d0ab;
  border-color: rgba(134, 208, 171, 0.24);
}

.voice-status-badge[data-voice-status="error"] {
  color: #d48f84;
  border-color: rgba(212, 143, 132, 0.26);
}

.rail-qa-form {
  display: grid;
  gap: 12px;
}

textarea,
input[type="range"] {
  accent-color: var(--bronze-soft);
}

textarea {
  width: 100%;
  min-height: 134px;
  resize: vertical;
  padding: 15px 16px;
  border: 1px solid var(--line);
  border-radius: 22px;
  outline: none;
  background: rgba(255, 255, 255, 0.04);
  color: var(--paper);
}

textarea::placeholder {
  color: rgba(241, 234, 223, 0.42);
}

textarea:focus {
  border-color: var(--line-strong);
  box-shadow: 0 0 0 4px rgba(194, 154, 99, 0.12);
}

.system-status {
  min-height: 44px;
  font-size: 0.88rem;
}

.rail-nav {
  display: grid;
  gap: 8px;
}

.rail-nav a {
  padding: 12px 14px;
  border: 1px solid transparent;
  border-radius: 16px;
  color: var(--mist);
  transition: color 180ms var(--ease), border-color 180ms var(--ease), transform 180ms var(--ease);
}

.rail-nav a:hover {
  color: var(--paper);
  border-color: var(--line-strong);
  transform: translateX(2px);
}

.rail-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  padding: 14px;
}

.rail-metric {
  display: grid;
  gap: 6px;
  padding: 12px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.04);
}

.rail-metric strong {
  font-size: 1.25rem;
}

.exhibition {
  display: grid;
  gap: 18px;
}

.chapter {
  position: relative;
  padding: clamp(22px, 4vw, 54px);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(circle at 50% 0%, rgba(194, 154, 99, 0.08), transparent 18%),
    linear-gradient(180deg, rgba(18, 24, 23, 0.92), rgba(12, 17, 16, 0.88));
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.chapter::before {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px),
    linear-gradient(180deg, rgba(255, 255, 255, 0.01) 1px, transparent 1px);
  background-size: 120px 120px;
  opacity: 0.28;
  pointer-events: none;
  content: "";
}

.chapter > * {
  position: relative;
  z-index: 1;
}

.chapter-prologue {
  display: grid;
  grid-template-columns: minmax(280px, 0.95fr) minmax(360px, 1.05fr);
  gap: 32px;
  align-items: center;
  min-height: calc(100vh - 28px);
}

.chapter-copy {
  display: grid;
  gap: 18px;
}

.eyebrow {
  color: var(--bronze-soft);
}

.chapter-copy h1 {
  max-width: 11ch;
  font-size: clamp(3.4rem, 7vw, 6.2rem);
  line-height: 0.98;
  letter-spacing: -0.06em;
}

.chapter-summary {
  max-width: 620px;
  font-size: 1.02rem;
}

.chapter-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-figure {
  display: grid;
  gap: 14px;
  justify-items: end;
}

.hero-frame {
  width: min(100%, 720px);
  padding: clamp(18px, 2.4vw, 34px);
  border-radius: 30px;
  background:
    radial-gradient(circle at 50% 18%, rgba(255, 255, 255, 0.08), transparent 30%),
    linear-gradient(145deg, rgba(29, 36, 35, 0.96), rgba(12, 16, 15, 0.92));
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.04),
    0 26px 90px rgba(0, 0, 0, 0.28);
}

.hero-image {
  width: 100%;
  aspect-ratio: 1.1 / 1;
  object-fit: contain;
  filter: drop-shadow(0 26px 40px rgba(0, 0, 0, 0.28));
}

.hero-figure figcaption {
  width: min(100%, 600px);
  text-align: right;
}

.chapter-intro {
  display: grid;
  gap: 10px;
  max-width: 760px;
  margin-bottom: 24px;
}

.chapter-intro h2 {
  max-width: 12ch;
  font-size: clamp(2.2rem, 4vw, 4rem);
  line-height: 1;
  letter-spacing: -0.04em;
}

.chapter-stage .chapter-intro h2,
.chapter-dialogue .chapter-intro h2,
.chapter-archive .chapter-intro h2 {
  max-width: 16ch;
}

.stage-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(260px, 0.55fr);
  gap: 18px;
}

.stage-card {
  display: grid;
  gap: 14px;
  padding: 14px;
}

.stage-card-head {
  display: grid;
  gap: 8px;
  padding: 14px 16px;
  border: 1px solid rgba(255, 255, 255, 0.04);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.03);
}

.stage-card-head[data-avatar-state="connecting"] .status-icon,
.stage-card-head[data-avatar-state="loading"] .status-icon {
  color: var(--bronze-soft);
}

.stage-card-head[data-avatar-state="online"] .status-icon,
.stage-card-head[data-avatar-state="speaking"] .status-icon {
  color: #7ab594;
}

.stage-card-head[data-avatar-state="error"] .status-icon {
  color: #d48f84;
}

.stage-wrapper {
  position: relative;
  min-height: clamp(420px, 58vh, 760px);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 30px;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 18%, rgba(194, 154, 99, 0.16), transparent 28%),
    linear-gradient(180deg, #0d1312 0%, #121918 100%);
}

.stage-wrapper::before,
.stage-wrapper::after {
  position: absolute;
  left: 14%;
  right: 14%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(194, 154, 99, 0.62), transparent);
  content: "";
}

.stage-wrapper::before {
  top: 18px;
}

.stage-wrapper::after {
  bottom: 18px;
}

#sdk {
  position: absolute;
  inset: 0;
  z-index: 3;
}

#sdk > .sdk-session {
  position: absolute !important;
  inset: 0 !important;
  width: 100% !important;
  height: 100% !important;
  overflow: hidden !important;
}

#sdk > .sdk-session > canvas {
  width: 100% !important;
  height: 100% !important;
  max-width: none !important;
  max-height: none !important;
  object-fit: contain !important;
}

.stage-overlay-art,
.stage-glow,
.avatar-placeholder {
  position: absolute;
}

.stage-overlay-art {
  inset: 0;
  z-index: 1;
  display: grid;
  place-items: center;
}

.stage-overlay-art img {
  width: min(320px, 36vw);
  opacity: 0.16;
  filter: saturate(0.85) sepia(0.22);
}

.stage-glow {
  inset: 12%;
  z-index: 1;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(194, 154, 99, 0.18), transparent 64%);
  filter: blur(20px);
}

.avatar-placeholder {
  inset: 24px;
  z-index: 4;
  display: grid;
  place-content: center;
  gap: 10px;
  padding: 24px;
  border: 1px dashed rgba(225, 208, 180, 0.12);
  border-radius: 22px;
  background: rgba(7, 10, 9, 0.5);
  text-align: center;
  backdrop-filter: blur(8px);
}

.avatar-placeholder[hidden] {
  display: none;
}

.avatar-placeholder strong {
  font-size: 1.4rem;
}

.intro-ledge {
  display: grid;
  gap: 14px;
}

.ledge-card {
  display: grid;
  gap: 8px;
  padding: 18px;
}

.map-stage {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(260px, 0.5fr);
  gap: 18px;
  align-items: stretch;
}

.map-board {
  position: relative;
  min-height: 560px;
  border: 1px solid var(--line);
  border-radius: 30px;
  background:
    radial-gradient(circle at 50% 18%, rgba(194, 154, 99, 0.12), transparent 26%),
    linear-gradient(160deg, rgba(14, 22, 20, 0.98), rgba(21, 31, 29, 0.9));
  overflow: hidden;
}

.map-board::before {
  position: absolute;
  inset: 7% 10%;
  border: 1px dashed rgba(225, 208, 180, 0.12);
  border-radius: 32% 41% 38% 34%;
  opacity: 0.7;
  content: "";
}

.map-board::after {
  position: absolute;
  inset: 14% 18%;
  border: 1px dashed rgba(194, 154, 99, 0.16);
  border-radius: 40% 32% 42% 28%;
  content: "";
}

.map-node {
  position: absolute;
  left: var(--x);
  top: var(--y);
  display: grid;
  gap: 6px;
  width: min(230px, 32vw);
  padding: 14px 16px;
  border: 1px solid rgba(225, 208, 180, 0.12);
  border-radius: 22px;
  background: rgba(9, 13, 12, 0.72);
  text-align: left;
  transform: translate(-50%, -50%);
  transition: transform 180ms var(--ease), border-color 180ms var(--ease), box-shadow 180ms var(--ease);
}

.map-node::before {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--bronze-soft);
  box-shadow: 0 0 18px rgba(194, 154, 99, 0.6);
  content: "";
}

.map-node:hover,
.map-node.is-active {
  transform: translate(-50%, -52%);
  border-color: var(--line-strong);
  box-shadow: 0 22px 40px rgba(0, 0, 0, 0.24);
}

.map-node strong,
.journey-card strong,
.theme-card strong,
.prompt-card strong,
.segment-card strong,
.route-card strong {
  display: block;
  color: var(--paper);
}

.map-node span,
.journey-card small,
.theme-card small,
.prompt-card small,
.segment-card small {
  color: var(--ash-gold);
  font-size: 0.82rem;
}

.caption-card {
  display: grid;
  gap: 12px;
  align-content: start;
  padding: 20px;
}

.caption-card strong {
  font-size: 1.65rem;
  line-height: 1.25;
}

.timeline-list {
  display: grid;
  gap: 14px;
}

.timeline-node {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr) auto;
  gap: 16px;
  align-items: start;
  padding: 18px;
  transition: transform 180ms var(--ease), border-color 180ms var(--ease), background 180ms var(--ease);
}

.timeline-node:hover,
.timeline-node.is-active {
  transform: translateY(-2px);
  border-color: var(--line-strong);
  background: rgba(194, 154, 99, 0.06);
}

.timeline-year {
  font-family: "ZCOOL XiaoWei", serif;
  font-size: 2rem;
  color: var(--bronze-soft);
  line-height: 1;
}

.timeline-copy strong {
  display: block;
  margin-bottom: 6px;
  font-size: 1.15rem;
}

.timeline-node .action-button {
  min-width: 112px;
}

.timeline-caption {
  margin-top: 18px;
}

.gallery-grid,
.prompt-grid,
.journey-list,
.audience-grid,
.archive-grid {
  display: grid;
  gap: 14px;
}

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

.theme-card {
  display: grid;
  gap: 10px;
  padding: 18px;
  transition: transform 180ms var(--ease), border-color 180ms var(--ease);
}

.theme-card:hover,
.theme-card.is-active {
  transform: translateY(-2px);
  border-color: var(--line-strong);
}

.spotlight-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(200px, 280px);
  gap: 18px;
  align-items: center;
  margin-top: 18px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.03);
}

.spotlight-copy {
  display: grid;
  gap: 10px;
}

.spotlight-image {
  justify-self: end;
  width: min(100%, 240px);
  filter: drop-shadow(0 20px 36px rgba(0, 0, 0, 0.24));
}

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

.prompt-card {
  display: grid;
  gap: 10px;
  padding: 18px;
  text-align: left;
  transition: transform 180ms var(--ease), border-color 180ms var(--ease);
}

.prompt-card:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
}

.chat-ledger {
  display: grid;
  gap: 10px;
  margin-top: 18px;
  max-height: 360px;
  overflow: auto;
  padding-right: 6px;
}

.chat-ledger::-webkit-scrollbar {
  width: 8px;
}

.chat-ledger::-webkit-scrollbar-thumb {
  border-radius: 999px;
  background: rgba(194, 154, 99, 0.22);
}

.message {
  width: min(100%, 860px);
  padding: 12px 14px;
  border-radius: 20px;
  line-height: 1.75;
}

.message.user {
  justify-self: end;
  background: linear-gradient(145deg, rgba(43, 73, 67, 0.94), rgba(22, 40, 36, 0.94));
}

.message.assistant {
  justify-self: start;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
}

.filter-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  align-items: end;
  margin-bottom: 18px;
}

.filter-row label {
  display: grid;
  gap: 10px;
  color: var(--mist);
  font-weight: 700;
}

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

.journey-card {
  display: grid;
  gap: 10px;
  padding: 18px;
}

.journey-card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
}

.journey-score {
  color: var(--bronze-soft);
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 0.84rem;
  font-weight: 600;
}

.audience-grid {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.segment-card {
  display: grid;
  gap: 8px;
  min-height: 132px;
  padding: 18px;
  text-align: left;
  transition: transform 180ms var(--ease), border-color 180ms var(--ease), background 180ms var(--ease);
}

.segment-card:hover,
.segment-card.is-active {
  transform: translateY(-2px);
  border-color: var(--line-strong);
  background: linear-gradient(145deg, rgba(194, 154, 99, 0.09), rgba(22, 40, 36, 0.3));
}

.pathway-layout,
.archive-columns {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 18px;
  margin-top: 18px;
}

.route-card {
  display: grid;
  gap: 14px;
  padding: 20px;
}

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

.route-list {
  display: grid;
  gap: 10px;
  padding-left: 20px;
}

.archive-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.archive-metric {
  display: grid;
  gap: 8px;
  padding: 18px;
}

.archive-metric strong {
  font-family: "Noto Serif SC", serif;
  font-size: 1.2rem;
}

.archive-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 18px 0;
}

.archive-panel {
  display: grid;
  gap: 12px;
  min-height: 220px;
  padding: 20px;
}

.archive-list {
  display: grid;
  gap: 10px;
}

.archive-item {
  padding: 12px 14px;
  border: 1px solid rgba(255, 255, 255, 0.04);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.03);
}

.archive-item strong {
  display: block;
  margin-bottom: 4px;
  color: var(--paper);
}

.archive-item span {
  color: var(--mist);
  font-size: 0.86rem;
}

body[data-avatar-state="online"] .stage-overlay-art,
body[data-avatar-state="speaking"] .stage-overlay-art {
  opacity: 0;
}

body[data-avatar-state="speaking"] .stage-wrapper,
body[data-voice-state="listening"] .stage-wrapper {
  box-shadow:
    0 26px 80px rgba(0, 0, 0, 0.3),
    0 0 0 1px rgba(194, 154, 99, 0.18),
    0 0 42px rgba(194, 154, 99, 0.08);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

:focus-visible {
  outline: 3px solid rgba(194, 154, 99, 0.34);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
  }
}

@media (max-width: 1240px) {
  .museum-shell {
    grid-template-columns: 1fr;
  }

  .control-rail {
    position: relative;
    top: auto;
    height: auto;
  }

  .chapter-prologue,
  .stage-layout,
  .map-stage,
  .pathway-layout,
  .archive-columns,
  .spotlight-card {
    grid-template-columns: 1fr;
  }

  .gallery-grid,
  .prompt-grid,
  .journey-list {
    grid-template-columns: 1fr;
  }

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

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

@media (max-width: 900px) {
  .rail-actions,
  .filter-row,
  .voice-actions,
  .pathway-layout,
  .archive-columns,
  .archive-grid {
    grid-template-columns: 1fr;
  }

  .timeline-node {
    grid-template-columns: 1fr;
  }

  .audience-grid {
    grid-template-columns: 1fr;
  }

  .chapter-copy h1 {
    max-width: 100%;
  }

  .map-board {
    min-height: auto;
    display: grid;
    gap: 12px;
    padding: 18px;
  }

  .map-node {
    position: relative;
    left: auto;
    top: auto;
    width: 100%;
    transform: none;
  }

  .map-node:hover,
  .map-node.is-active {
    transform: translateY(-2px);
  }
}

@media (max-width: 680px) {
  .museum-shell {
    width: min(100%, calc(100% - 12px));
    margin: 6px auto 28px;
    gap: 12px;
  }

  .control-rail,
  .chapter {
    padding: 16px;
    border-radius: 24px;
  }

  .rail-actions {
    grid-template-columns: 1fr;
  }

  .chapter-prologue {
    min-height: auto;
    gap: 18px;
  }

  .chapter-copy h1 {
    font-size: clamp(2.6rem, 13vw, 4.2rem);
  }

  .chapter-intro h2 {
    font-size: 2rem;
  }

  .stage-wrapper {
    min-height: 420px;
  }

  .floating-entry {
    right: 12px;
    bottom: 12px;
  }
}