@import url("https://fonts.googleapis.com/css2?family=Noto+Serif+SC:wght@400;500;600;700&family=Space+Grotesk:wght@400;500;600&display=swap");

:root {
  color-scheme: dark;
  --ink: #07100e;
  --ink-soft: #0c1815;
  --paper: #e8e0ce;
  --paper-dim: #a8a18f;
  --jade: #66d8b5;
  --jade-deep: #194d41;
  --bronze: #c79358;
  --line: rgba(225, 214, 190, 0.18);
  --panel: rgba(8, 18, 15, 0.74);
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.34);
  font-family: "Space Grotesk", "Noto Serif SC", sans-serif;
  background: var(--ink);
  color: var(--paper);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 1100px;
  min-height: 100vh;
  margin: 0;
  background:
    radial-gradient(circle at 72% 8%, rgba(30, 96, 77, 0.18), transparent 33rem),
    radial-gradient(circle at 10% 45%, rgba(143, 96, 50, 0.12), transparent 27rem),
    var(--ink);
  color: var(--paper);
}

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

button,
select {
  font: inherit;
}

.site-header,
.viewer-header {
  position: relative;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-header {
  width: min(1500px, calc(100% - 96px));
  margin: 0 auto;
  padding: 30px 0;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  letter-spacing: 0.06em;
}

.brand-mark {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  border: 1px solid rgba(199, 147, 88, 0.65);
  border-radius: 50%;
  color: var(--bronze);
  font-family: "Noto Serif SC", serif;
  font-size: 13px;
}

.brand-name {
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
}

.catalog-count {
  color: var(--paper-dim);
  font-size: 13px;
}

.catalog-count strong {
  margin: 0 6px;
  color: var(--jade);
  font-size: 18px;
}

.hero {
  position: relative;
  display: grid;
  min-height: 610px;
  align-content: center;
  justify-items: center;
  overflow: hidden;
  text-align: center;
}

.hero::before,
.hero::after {
  position: absolute;
  width: 420px;
  height: 420px;
  border: 1px solid rgba(102, 216, 181, 0.1);
  border-radius: 50%;
  content: "";
}

.hero::before {
  top: 64px;
  transform: rotate(18deg) scaleX(1.75);
}

.hero::after {
  top: 105px;
  transform: rotate(-12deg) scaleX(1.3);
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--bronze);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.28em;
  text-transform: uppercase;
}

.hero h1 {
  z-index: 1;
  margin: 0;
  font-family: "Noto Serif SC", serif;
  font-size: clamp(100px, 11vw, 178px);
  font-weight: 500;
  letter-spacing: 0.12em;
  line-height: 1;
  text-indent: 0.12em;
  text-shadow: 0 14px 70px rgba(96, 214, 180, 0.1);
}

.hero h1 ruby rt {
  color: var(--bronze);
  font-family: "Space Grotesk", sans-serif;
  font-size: 0.11em;
  letter-spacing: 0.08em;
}

.hero-copy {
  z-index: 1;
  width: 540px;
  margin: 30px auto 0;
  color: var(--paper-dim);
  font-family: "Noto Serif SC", serif;
  font-size: 17px;
  line-height: 1.9;
}

.hero-copy small,
.section-heading > p small {
  display: block;
  color: var(--bronze);
  font-family: "Space Grotesk", sans-serif;
  font-size: 10px;
  letter-spacing: 0.04em;
}

.hero-link {
  z-index: 1;
  margin-top: 38px;
  padding: 13px 24px;
  border: 1px solid rgba(102, 216, 181, 0.36);
  border-radius: 999px;
  color: var(--jade);
  font-size: 12px;
  letter-spacing: 0.14em;
  transition: 180ms ease;
}

.hero-link small {
  display: block;
  margin: 0 0 3px;
  font-size: 9px;
  letter-spacing: 0.03em;
}

.hero-link:hover {
  border-color: var(--jade);
  background: rgba(102, 216, 181, 0.08);
  transform: translateY(-2px);
}

.catalog-section {
  width: min(1500px, calc(100% - 96px));
  margin: 0 auto;
  padding: 110px 0 130px;
  border-top: 1px solid var(--line);
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  margin-bottom: 40px;
}

.section-heading h2 {
  margin: 0;
  font-family: "Noto Serif SC", serif;
  font-size: 44px;
  font-weight: 500;
}

.section-heading h2 ruby rt {
  color: var(--bronze);
  font-size: 0.24em;
}

.section-heading > p {
  margin: 0 0 5px;
  color: var(--paper-dim);
  font-size: 13px;
}

.collection-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 26px;
}

.collection-card {
  display: block;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: rgba(13, 28, 23, 0.52);
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(18px);
  animation: card-in 560ms calc(var(--card-index) * 70ms) ease forwards;
  transition: border-color 180ms ease, transform 180ms ease;
}

.collection-card:hover {
  border-color: rgba(102, 216, 181, 0.45);
  transform: translateY(-5px);
}

.collection-card-media {
  position: relative;
  height: 360px;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 44%, rgba(102, 216, 181, 0.24), transparent 24%),
    linear-gradient(145deg, #172a23, #090f0d 68%);
}

.collection-card-media::after {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(4, 9, 7, 0.55));
  content: "";
}

.collection-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.88) contrast(1.03);
  transition: transform 500ms ease, filter 500ms ease;
}

.collection-card:hover img {
  filter: saturate(1) contrast(1.06);
  transform: scale(1.025);
}

.collection-card-media.is-fallback img {
  display: none;
}

.collection-ordinal {
  position: absolute;
  top: 20px;
  right: 22px;
  z-index: 1;
  color: rgba(232, 224, 206, 0.54);
  font-size: 11px;
  letter-spacing: 0.18em;
}

.collection-card-content {
  position: relative;
  display: flex;
  min-height: 126px;
  align-items: start;
  justify-content: space-between;
  padding: 24px 26px;
}

.collection-card-content p {
  margin: 0 0 7px;
  color: var(--bronze);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.collection-card-content h3 {
  margin: 0;
  font-family: "Noto Serif SC", serif;
  font-size: 26px;
  font-weight: 500;
}

.collection-card-pinyin {
  display: block;
  margin-bottom: 4px;
  color: var(--bronze);
  font-size: 10px;
  letter-spacing: 0.08em;
}

.collection-card-subtitle-pinyin {
  display: block;
  margin-bottom: 3px;
  color: var(--bronze);
  font-size: 9px;
  letter-spacing: 0.04em;
}

.collection-card-content .collection-summary {
  position: absolute;
  right: 26px;
  bottom: 22px;
  left: 26px;
  overflow: hidden;
  margin: 0;
  color: var(--paper-dim);
  font-size: 12px;
  letter-spacing: 0;
  text-overflow: ellipsis;
  text-transform: none;
  white-space: nowrap;
}

.card-arrow {
  color: var(--jade);
  font-size: 22px;
}

.empty-state {
  position: relative;
  display: grid;
  min-height: 300px;
  place-items: center;
  align-content: center;
  border: 1px dashed rgba(102, 216, 181, 0.25);
  background: rgba(10, 23, 19, 0.36);
  text-align: center;
}

.empty-state[hidden] {
  display: none;
}

.empty-state h3 {
  margin: 20px 0 8px;
  font-family: "Noto Serif SC", serif;
  font-size: 26px;
  font-weight: 500;
}

.empty-state p {
  margin: 0;
  color: var(--paper-dim);
}

.empty-state code {
  color: var(--jade);
}

.empty-orbit {
  width: 54px;
  height: 54px;
  border: 1px solid rgba(102, 216, 181, 0.46);
  border-radius: 50%;
  box-shadow: inset 0 0 24px rgba(102, 216, 181, 0.08);
}

.site-footer {
  display: flex;
  width: min(1500px, calc(100% - 96px));
  align-items: center;
  justify-content: space-between;
  margin: 0 auto;
  padding: 28px 0 36px;
  border-top: 1px solid var(--line);
  color: var(--paper-dim);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* Child-friendly catalog */

.home-page.kid-home {
  color-scheme: light;
  background:
    radial-gradient(circle at 83% 8%, rgba(255, 208, 105, 0.58), transparent 23rem),
    radial-gradient(circle at 10% 48%, rgba(130, 222, 195, 0.44), transparent 25rem),
    linear-gradient(180deg, #e9f7ec 0%, #fff9e7 58%, #f9e9bd 100%);
  color: #173c35;
}

.home-page.kid-home .site-header {
  border-color: rgba(35, 91, 76, 0.18);
}

.home-page.kid-home .brand-mark {
  border: 2px solid #d8793d;
  background: #ffd56a;
  box-shadow: 0 5px 0 rgba(216, 121, 61, 0.7);
  color: #6b371d;
  font-weight: 700;
}

.home-page.kid-home .brand-name {
  display: grid;
  color: #173c35;
  font-family: "Noto Serif SC", serif;
  font-size: 16px;
  text-transform: none;
}

.home-page.kid-home .brand-name small {
  color: #638079;
  font-family: "Space Grotesk", sans-serif;
  font-size: 9px;
  font-weight: 500;
}

.home-page.kid-home .catalog-count {
  padding: 10px 18px;
  border: 2px solid rgba(35, 91, 76, 0.15);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.7);
  color: #51756d;
}

.home-page.kid-home .catalog-count strong {
  color: #d66f37;
}

.home-page.kid-home .hero {
  min-height: 500px;
}

.home-page.kid-home .hero::before,
.home-page.kid-home .hero::after {
  border-width: 3px;
  border-color: rgba(42, 137, 109, 0.14);
}

.home-page.kid-home .eyebrow {
  color: #9e542f;
  font-family: "Noto Serif SC", serif;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: none;
}

.home-page.kid-home .eyebrow small {
  display: block;
  margin: 0 0 3px;
  color: #638079;
  font-family: "Space Grotesk", sans-serif;
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.04em;
}

.home-page.kid-home .hero h1 {
  color: #173c35;
  font-size: clamp(94px, 9vw, 144px);
  font-weight: 700;
  text-shadow: 0 10px 0 rgba(255, 255, 255, 0.72);
}

.home-page.kid-home .hero h1 ruby rt,
.home-page.kid-home .section-heading h2 ruby rt {
  color: #bd6234;
}

.home-page.kid-home .hero-copy {
  margin-top: 26px;
  color: #294f47;
  font-size: 18px;
  font-weight: 600;
}

.home-page.kid-home .hero-copy small,
.home-page.kid-home .section-heading > p small {
  color: #638079;
}

.home-page.kid-home .hero-link {
  min-width: 216px;
  margin-top: 28px;
  padding: 14px 26px 12px;
  border: 2px solid #c66b39;
  border-radius: 18px;
  background: linear-gradient(135deg, #ffe388, #ffbd62);
  box-shadow: 0 7px 0 #d8793d;
  color: #63361f;
  font-family: "Noto Serif SC", serif;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0;
}

.home-page.kid-home .hero-link:hover {
  border-color: #c66b39;
  background: linear-gradient(135deg, #ffe99f, #ffc978);
  transform: translateY(-2px);
}

.home-page.kid-home .catalog-section {
  padding: 70px 0 110px;
  border-color: rgba(35, 91, 76, 0.18);
}

.home-page.kid-home .section-heading h2 {
  color: #173c35;
  font-weight: 700;
}

.home-page.kid-home .section-heading > p {
  color: #294f47;
  font-size: 14px;
  font-weight: 600;
}

.home-page.kid-home .collection-card {
  overflow: hidden;
  border: 4px solid rgba(255, 255, 255, 0.92);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: 0 18px 0 rgba(96, 177, 151, 0.28), 0 25px 56px rgba(57, 112, 95, 0.18);
}

.home-page.kid-home .collection-card:hover {
  border-color: #fff;
}

.home-page.kid-home .collection-card-media {
  height: 330px;
  background: linear-gradient(145deg, #caefdf, #fbe5a8);
}

.home-page.kid-home .collection-card-media::after {
  background: linear-gradient(180deg, transparent 76%, rgba(20, 70, 57, 0.14));
}

.home-page.kid-home .collection-card-media img {
  filter: saturate(1.08) contrast(1.02);
}

.home-page.kid-home .collection-ordinal {
  padding: 7px 10px;
  border-radius: 12px;
  background: rgba(255, 249, 231, 0.82);
  color: #8a5637;
}

.home-page.kid-home .collection-card-content {
  min-height: 150px;
}

.home-page.kid-home .collection-card-content p {
  color: #a95a30;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: none;
}

.home-page.kid-home .collection-card-content h3 {
  color: #173c35;
  font-size: 32px;
  font-weight: 700;
}

.home-page.kid-home .collection-card-pinyin,
.home-page.kid-home .collection-card-content .collection-summary {
  color: #638079;
}

.home-page.kid-home .card-arrow {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 50%;
  background: #8de0c6;
  color: #174c40;
}

.home-page.kid-home .site-footer {
  border-color: rgba(35, 91, 76, 0.18);
  color: #638079;
  text-transform: none;
}

.home-page.kid-home .footer-copy {
  display: grid;
  gap: 4px;
}

.home-page.kid-home .footer-copy small {
  font-size: 10px;
  font-weight: 500;
}

.home-page.kid-home .footer-copy b {
  color: #294f47;
  font-family: "Noto Serif SC", serif;
  font-size: 13px;
}

/* Individual collection viewer */

.collection-page {
  overflow: hidden;
  background: #070c0b;
}

.kid-guide {
  display: none;
}

.hanzi-line,
.pinyin-line {
  display: block;
}

.pinyin-line,
ruby rt {
  font-family: "Space Grotesk", sans-serif;
  font-weight: 500;
  letter-spacing: 0.04em;
}

ruby {
  ruby-position: over;
}

ruby rt {
  font-size: 0.26em;
}

.bilingual-button small,
.voice-copy small,
.viewer-controls label small,
.mouse-hint small {
  display: block;
  font-size: 10px;
  line-height: 1.3;
}

.voice-button,
.voice-status,
.action-message {
  display: none;
}

.collection-page[data-preview-mode="true"] .viewer-header,
.collection-page[data-preview-mode="true"] .creature-panel,
.collection-page[data-preview-mode="true"] .viewer-controls,
.collection-page[data-preview-mode="true"] .mouse-hint {
  display: none;
}

/* Child-friendly collection experience */

.collection-page[data-kid-mode="true"] {
  --kid-ink: #173c35;
  --kid-muted: #51756d;
  --kid-cream: rgba(255, 249, 231, 0.95);
  --kid-yellow: #ffd56a;
  --kid-orange: #ee8a4c;
  --kid-mint: #8de0c6;
  --kid-line: rgba(35, 91, 76, 0.2);
}

.collection-page[data-kid-mode="true"] .kid-guide {
  position: fixed;
  top: 24px;
  left: 50%;
  z-index: 18;
  display: flex;
  gap: 10px;
  pointer-events: none;
  transform: translateX(-50%);
}

.collection-page[data-kid-mode="true"] .kid-guide div {
  display: grid;
  min-width: 132px;
  grid-template-columns: auto 1fr;
  column-gap: 8px;
  align-items: center;
  padding: 9px 14px;
  border: 2px solid rgba(255, 255, 255, 0.64);
  border-radius: 18px;
  background: var(--kid-cream);
  box-shadow: 0 10px 28px rgba(15, 53, 43, 0.2);
  color: var(--kid-ink);
  backdrop-filter: blur(14px);
}

.collection-page[data-kid-mode="true"] .kid-guide div > span {
  grid-row: 1 / span 2;
  font-size: 22px;
}

.collection-page[data-kid-mode="true"] .kid-guide b {
  font-family: "Noto Serif SC", serif;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.25;
}

.collection-page[data-kid-mode="true"] .kid-guide small {
  color: var(--kid-muted);
  font-size: 9px;
}

.collection-page[data-kid-mode="true"] .back-link {
  display: grid;
  min-width: 122px;
  padding: 9px 16px;
  border: 2px solid rgba(255, 255, 255, 0.58);
  border-radius: 18px;
  background: var(--kid-cream);
  color: var(--kid-ink);
  text-align: center;
}

.collection-page[data-kid-mode="true"] .back-link small {
  color: var(--kid-muted);
}

.collection-page[data-kid-mode="true"] .creature-panel {
  bottom: 28px;
  left: 28px;
  width: 410px;
  max-height: calc(100vh - 150px);
  overflow: auto;
  padding: 26px 28px 24px;
  border: 3px solid rgba(255, 255, 255, 0.6);
  border-radius: 28px;
  background: var(--kid-cream);
  box-shadow: 0 24px 70px rgba(8, 42, 34, 0.26);
  color: var(--kid-ink);
  scrollbar-width: thin;
}

.collection-page[data-kid-mode="true"] .creature-panel .eyebrow {
  margin-bottom: 11px;
  color: #ae5f2d;
  letter-spacing: 0.04em;
  text-transform: none;
}

.collection-page[data-kid-mode="true"] .creature-panel .eyebrow .hanzi-line {
  font-family: "Noto Serif SC", serif;
  font-size: 14px;
  font-weight: 700;
}

.collection-page[data-kid-mode="true"] .creature-panel .pinyin-line {
  margin-top: 3px;
  color: var(--kid-muted);
  font-size: 10px;
  line-height: 1.45;
}

.collection-page[data-kid-mode="true"] .creature-panel h1 {
  margin-bottom: 20px;
  color: var(--kid-ink);
  font-size: 48px;
  line-height: 1.05;
}

.collection-page[data-kid-mode="true"] .creature-panel h1 rt {
  color: #bf6c38;
}

.collection-page[data-kid-mode="true"] .creature-panel > p:not(.eyebrow):not(.voice-status) {
  color: var(--kid-ink);
  font-size: 14px;
  line-height: 1.75;
}

.collection-page[data-kid-mode="true"] #creature-summary .pinyin-line {
  margin-top: 7px;
  color: var(--kid-muted);
  font-family: "Space Grotesk", sans-serif;
  font-size: 10px;
  line-height: 1.55;
}

.collection-page[data-kid-mode="true"] .voice-button {
  display: flex;
  width: 100%;
  min-height: 58px;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-top: 16px;
  border: 0;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--kid-yellow), #ffb95f);
  box-shadow: 0 8px 0 #d8793d, 0 14px 26px rgba(178, 93, 41, 0.2);
  color: #5e321d;
  cursor: pointer;
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.collection-page[data-kid-mode="true"] .voice-button:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 10px 0 #d8793d, 0 18px 30px rgba(178, 93, 41, 0.24);
}

.collection-page[data-kid-mode="true"] .voice-button:active:not(:disabled) {
  transform: translateY(5px);
  box-shadow: 0 3px 0 #d8793d;
}

.collection-page[data-kid-mode="true"] .voice-button:disabled {
  cursor: wait;
  filter: grayscale(0.45);
  opacity: 0.62;
}

.collection-page[data-kid-mode="true"] .voice-icon {
  font-size: 25px;
}

.collection-page[data-kid-mode="true"] .voice-copy {
  display: grid;
  text-align: left;
}

.collection-page[data-kid-mode="true"] .voice-copy b {
  font-family: "Noto Serif SC", serif;
  font-size: 16px;
}

.collection-page[data-kid-mode="true"] .voice-copy small {
  color: rgba(94, 50, 29, 0.72);
}

.collection-page[data-kid-mode="true"] .voice-status {
  display: block;
  margin: 13px 0 0;
  color: var(--kid-muted);
  font-size: 10px;
  line-height: 1.45;
  text-align: center;
}

.collection-page[data-kid-mode="true"] .creature-facts {
  gap: 11px 16px;
  margin-top: 16px;
  padding-top: 16px;
  border-color: var(--kid-line);
  font-size: 12px;
}

.collection-page[data-kid-mode="true"] .creature-facts dt {
  color: #a7562b;
  font-weight: 700;
}

.collection-page[data-kid-mode="true"] .creature-facts dd {
  color: var(--kid-ink);
}

.collection-page[data-kid-mode="true"] .creature-facts .pinyin-line {
  max-width: 220px;
  margin-top: 2px;
  color: var(--kid-muted);
  font-size: 9px;
  line-height: 1.35;
}

.collection-page[data-kid-mode="true"] .viewer-controls {
  right: 28px;
  bottom: 28px;
  width: 318px;
  gap: 11px;
  padding: 22px;
  border: 3px solid rgba(255, 255, 255, 0.6);
  border-radius: 28px;
  background: var(--kid-cream);
  box-shadow: 0 24px 70px rgba(8, 42, 34, 0.26);
  color: var(--kid-ink);
}

.collection-page[data-kid-mode="true"] .viewer-controls label {
  color: var(--kid-ink);
  font-family: "Noto Serif SC", serif;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: none;
}

.collection-page[data-kid-mode="true"] .viewer-controls label small {
  margin-top: 3px;
  color: var(--kid-muted);
  font-family: "Space Grotesk", sans-serif;
  font-weight: 500;
}

.collection-page[data-kid-mode="true"] .viewer-controls select,
.collection-page[data-kid-mode="true"] .viewer-controls button {
  min-height: 54px;
  border: 2px solid var(--kid-line);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--kid-ink);
  font-size: 14px;
  font-weight: 600;
}

.collection-page[data-kid-mode="true"] .viewer-controls select {
  padding: 0 14px;
  border-color: rgba(235, 137, 74, 0.42);
  background: #fffdf5;
}

.collection-page[data-kid-mode="true"] .viewer-controls button {
  display: grid;
  place-content: center;
}

.collection-page[data-kid-mode="true"] .viewer-controls button small {
  margin-top: 2px;
  color: var(--kid-muted);
}

.collection-page[data-kid-mode="true"] .viewer-controls button:first-of-type {
  border-color: rgba(36, 135, 108, 0.25);
  background: linear-gradient(135deg, #c5f2e4, var(--kid-mint));
}

.collection-page[data-kid-mode="true"] .action-message {
  display: block;
  min-height: 76px;
  padding: 12px 14px;
  border: 2px dashed rgba(233, 132, 68, 0.34);
  border-radius: 16px;
  background: rgba(255, 226, 145, 0.28);
  color: var(--kid-ink);
  font-family: "Noto Serif SC", serif;
  font-size: 13px;
  line-height: 1.55;
}

.collection-page[data-kid-mode="true"] .action-message .pinyin-line {
  margin-top: 4px;
  color: var(--kid-muted);
  font-family: "Space Grotesk", sans-serif;
  font-size: 9px;
  line-height: 1.35;
}

.collection-page[data-kid-mode="true"] .mouse-hint {
  top: auto;
  right: auto;
  bottom: 26px;
  left: 50%;
  display: flex;
  gap: 12px;
  color: var(--kid-ink);
  font-size: 11px;
  letter-spacing: 0;
  transform: translateX(-50%);
}

.collection-page[data-kid-mode="true"] .mouse-hint > span {
  min-width: 124px;
  padding: 8px 12px;
  border: 2px solid rgba(255, 255, 255, 0.56);
  border-radius: 14px;
  background: rgba(255, 249, 231, 0.86);
  box-shadow: 0 8px 24px rgba(8, 42, 34, 0.15);
  text-align: center;
  backdrop-filter: blur(10px);
}

.collection-page[data-kid-mode="true"] .mouse-hint small {
  margin-top: 2px;
  color: var(--kid-muted);
  font-size: 8px;
}

.collection-page[data-kid-mode="true"] .loading-state,
.collection-page[data-kid-mode="true"] .viewer-error {
  background:
    radial-gradient(circle at 50% 44%, rgba(141, 224, 198, 0.22), transparent 22rem),
    #102c26;
}

.collection-page[data-kid-mode="true"] .loading-state strong,
.collection-page[data-kid-mode="true"] .viewer-error strong {
  font-size: 30px;
}

.collection-page[data-kid-mode="true"] .loading-state small,
.collection-page[data-kid-mode="true"] .viewer-error small {
  color: var(--kid-yellow);
  font-size: 11px;
}

/* Refined child-readable educational layout */

.collection-page[data-kid-mode="true"] {
  --kid-ink: #183d36;
  --kid-muted: #55746d;
  --kid-cream: rgba(250, 248, 239, 0.96);
  --kid-yellow: #d6aa63;
  --kid-orange: #a85d36;
  --kid-mint: #8fc5b5;
  --kid-line: rgba(30, 77, 65, 0.2);
}

.collection-page[data-kid-mode="true"] .kid-guide {
  gap: 8px;
}

.collection-page[data-kid-mode="true"] .kid-guide div {
  min-width: 146px;
  padding: 9px 14px;
  border: 1px solid rgba(255, 255, 255, 0.78);
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(15, 53, 43, 0.16);
}

.collection-page[data-kid-mode="true"] .kid-guide div > span {
  font-size: 18px;
  font-weight: 700;
}

.collection-page[data-kid-mode="true"] .kid-guide b {
  font-size: 14px;
}

.collection-page[data-kid-mode="true"] .kid-guide small {
  margin-bottom: 2px;
  font-size: 10px;
}

.collection-page[data-kid-mode="true"] .back-link {
  min-width: 132px;
  border-width: 1px;
  border-radius: 12px;
}

.collection-page[data-kid-mode="true"] .back-link small,
.collection-page[data-kid-mode="true"] .bilingual-button small,
.collection-page[data-kid-mode="true"] .viewer-controls label small,
.collection-page[data-kid-mode="true"] .mouse-hint small {
  margin: 0 0 3px;
  color: var(--kid-muted);
  font-size: 11px;
  line-height: 1.25;
}

.collection-page[data-kid-mode="true"] .creature-panel {
  width: 430px;
  max-height: calc(100vh - 128px);
  padding: 24px 26px;
  border-width: 1px;
  border-radius: 18px;
  box-shadow: 0 18px 54px rgba(8, 42, 34, 0.22);
}

.collection-page[data-kid-mode="true"] .creature-panel .eyebrow .pinyin-line,
.collection-page[data-kid-mode="true"] .creature-panel .pinyin-line {
  margin: 0 0 4px;
  font-size: 11px;
  line-height: 1.35;
}

.collection-page[data-kid-mode="true"] .creature-panel h1 {
  margin: 8px 0 18px;
  font-size: 45px;
}

.collection-page[data-kid-mode="true"] .creature-panel h1 rt {
  font-size: 0.24em;
}

.collection-page[data-kid-mode="true"] .creature-panel > p:not(.eyebrow):not(.voice-status) {
  font-size: 15px;
  line-height: 1.72;
}

.collection-page[data-kid-mode="true"] #creature-summary .pinyin-line {
  margin: 0 0 8px;
  font-size: 11px;
  line-height: 1.48;
}

.collection-page[data-kid-mode="true"] .voice-button {
  min-height: 56px;
  margin-top: 15px;
  border: 1px solid rgba(133, 82, 41, 0.26);
  border-radius: 12px;
  background: linear-gradient(135deg, #e8c278, #dca75d);
  box-shadow: 0 4px 0 #aa6a3f, 0 10px 22px rgba(113, 70, 39, 0.18);
  color: #4f321f;
}

.collection-page[data-kid-mode="true"] .voice-button:hover:not(:disabled) {
  box-shadow: 0 5px 0 #aa6a3f, 0 13px 26px rgba(113, 70, 39, 0.2);
}

.collection-page[data-kid-mode="true"] .voice-button:active:not(:disabled) {
  transform: translateY(3px);
  box-shadow: 0 1px 0 #aa6a3f;
}

.collection-page[data-kid-mode="true"] .voice-copy small {
  margin-bottom: 2px;
  color: rgba(79, 50, 31, 0.72);
  font-size: 11px;
}

.collection-page[data-kid-mode="true"] .voice-copy b {
  font-size: 16px;
}

.collection-page[data-kid-mode="true"] .voice-status {
  font-size: 11px;
}

.collection-page[data-kid-mode="true"] .creature-facts {
  gap: 12px 16px;
  font-size: 12px;
}

.collection-page[data-kid-mode="true"] .creature-facts .pinyin-line {
  max-width: 238px;
  margin: 0 0 3px;
  font-size: 10px;
}

.collection-page[data-kid-mode="true"] .viewer-controls {
  width: 360px;
  gap: 10px;
  padding: 20px;
  border-width: 1px;
  border-radius: 18px;
  box-shadow: 0 18px 54px rgba(8, 42, 34, 0.22);
}

.collection-page[data-kid-mode="true"] .viewer-controls label {
  display: grid;
  font-size: 15px;
}

.collection-page[data-kid-mode="true"] .viewer-controls select,
.collection-page[data-kid-mode="true"] .viewer-controls button {
  min-height: 50px;
  border-width: 1px;
  border-radius: 11px;
  font-size: 14px;
}

.collection-page[data-kid-mode="true"] .action-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.collection-page[data-kid-mode="true"] .action-nav button {
  padding: 7px 9px;
  background: rgba(255, 255, 255, 0.78);
}

.collection-page[data-kid-mode="true"] .action-nav button:last-child {
  border-color: rgba(45, 126, 104, 0.32);
  background: rgba(196, 233, 221, 0.72);
}

.collection-page[data-kid-mode="true"] .action-message {
  display: grid;
  min-height: 120px;
  gap: 8px;
  padding: 12px 14px;
  border-width: 1px;
  border-radius: 11px;
  background: rgba(226, 205, 150, 0.2);
  font-size: 13px;
}

.collection-page[data-kid-mode="true"] .action-message-title,
.collection-page[data-kid-mode="true"] .action-message-detail {
  display: block;
}

.collection-page[data-kid-mode="true"] .action-message-title {
  color: #8e4c2d;
  font-size: 15px;
}

.collection-page[data-kid-mode="true"] .action-message-detail {
  font-family: "Noto Serif SC", serif;
  line-height: 1.5;
}

.collection-page[data-kid-mode="true"] .action-message .pinyin-line {
  margin: 0 0 3px;
  font-size: 10px;
}

.collection-page[data-kid-mode="true"] .viewer-controls button:first-of-type {
  background: rgba(255, 255, 255, 0.78);
}

.collection-page[data-kid-mode="true"] #toggle-roam {
  border-color: rgba(36, 116, 94, 0.25);
  background: linear-gradient(135deg, #d9eee7, #a8d6c8);
}

.collection-page[data-kid-mode="true"] .mouse-hint > span {
  display: grid;
  min-width: 126px;
  padding: 8px 12px;
  border-width: 1px;
  border-radius: 10px;
}

.collection-page[data-kid-mode="true"] .mouse-hint b {
  font-size: 11px;
}

.viewer-shell,
#scene-canvas {
  position: fixed;
  inset: 0;
}

#scene-canvas {
  width: 100%;
  height: 100%;
  outline: none;
}

.viewer-header {
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  padding: 26px 34px;
  pointer-events: none;
}

.viewer-header a {
  pointer-events: auto;
}

.viewer-brand .brand-mark {
  background: rgba(4, 10, 8, 0.28);
  backdrop-filter: blur(12px);
}

.back-link {
  padding: 10px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(5, 12, 10, 0.48);
  color: var(--paper-dim);
  font-size: 12px;
  backdrop-filter: blur(14px);
  transition: 180ms ease;
}

.back-link:hover {
  border-color: rgba(102, 216, 181, 0.4);
  color: var(--paper);
}

.creature-panel {
  position: fixed;
  bottom: 42px;
  left: 42px;
  z-index: 10;
  width: 330px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.creature-panel h1 {
  margin: 0 0 12px;
  font-family: "Noto Serif SC", serif;
  font-size: 42px;
  font-weight: 500;
}

.creature-panel > p:not(.eyebrow) {
  margin: 0;
  color: var(--paper-dim);
  font-family: "Noto Serif SC", serif;
  font-size: 13px;
  line-height: 1.85;
}

.creature-facts {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 8px 15px;
  margin: 20px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 11px;
}

.creature-facts dt {
  color: var(--bronze);
}

.creature-facts dd {
  margin: 0;
  color: var(--paper-dim);
}

.viewer-controls {
  position: fixed;
  right: 38px;
  bottom: 42px;
  z-index: 10;
  display: grid;
  width: 230px;
  gap: 9px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--panel);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.viewer-controls label {
  color: var(--paper-dim);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.viewer-controls select,
.viewer-controls button {
  min-height: 40px;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: rgba(232, 224, 206, 0.05);
  color: var(--paper);
  cursor: pointer;
}

.viewer-controls select {
  padding: 0 11px;
}

.viewer-controls button:hover:not(:disabled),
.viewer-controls select:hover:not(:disabled) {
  border-color: rgba(102, 216, 181, 0.48);
}

.viewer-controls button:disabled,
.viewer-controls select:disabled {
  cursor: wait;
  opacity: 0.5;
}

.mouse-hint {
  position: fixed;
  top: 50%;
  right: 30px;
  z-index: 8;
  display: flex;
  gap: 18px;
  color: rgba(232, 224, 206, 0.48);
  font-size: 10px;
  letter-spacing: 0.1em;
  pointer-events: none;
  transform: rotate(90deg) translateX(50%);
  transform-origin: right center;
}

.loading-state,
.viewer-error {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 12px;
  background: #07100e;
  text-align: center;
  transition: opacity 400ms ease, visibility 400ms ease;
}

.loading-state.is-hidden {
  visibility: hidden;
  opacity: 0;
}

.loading-state strong,
.viewer-error strong {
  font-family: "Noto Serif SC", serif;
  font-size: 26px;
  font-weight: 500;
}

.loading-state span,
.viewer-error span {
  color: var(--paper-dim);
  font-size: 12px;
}

.loading-ring {
  width: 54px;
  height: 54px;
  margin-bottom: 16px;
  border: 1px solid rgba(102, 216, 181, 0.2);
  border-top-color: var(--jade);
  border-radius: 50%;
  animation: spin 1.2s linear infinite;
}

.viewer-error[hidden] {
  display: none;
}

.viewer-error a {
  margin-top: 12px;
  color: var(--jade);
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes card-in {
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}