/* Labels, feedback, and a reading path for the Europa laboratory. */
.model-labels button {
  min-height: 36px;
  padding: 7px 11px;
  font-size: 11px;
  color: #496c61;
  border-color: #7e9f92;
  background: #f7faf0;
}
@media (max-width: 760px) {
  .model-labels button {
    min-height: 34px;
    font-size: 10px;
  }
}
.header-utility {
  flex-shrink: 0;
}
.header-utility .music-button {
  white-space: nowrap;
}
.page-header > div:first-child {
  min-width: 0;
}
@media (max-width: 760px) {
  .page-header > div:first-child {
    flex: 1;
  }
  .page-header .eyebrow {
    font-size: 8px;
    letter-spacing: 0.05em;
  }
  .reading-position > span:last-child {
    display: none;
  }
  .reading-position::after {
    content: '目录可左右滑动';
    font-size: 9px;
    white-space: nowrap;
    color: #7c8775;
  }
}
:root .view-switch button[data-view][aria-pressed='true']::before {
  content: '';
  display: inline-block;
  width: 11px;
  height: 11px;
  margin-right: 3px;
  background: center/contain no-repeat
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'%3E%3Cpath d='m2 6 2.5 2.5L10 3' fill='none' stroke='%2347757b' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
}
:root {
  --muted: #756e61;
  --reading-offset: 118px;
  --focus: #477c83;
}
html {
  scroll-padding-top: var(--reading-offset);
}
[hidden] {
  display: none !important;
}
a:focus-visible,
button:focus-visible,
summary:focus-visible,
input:focus-visible,
select:focus-visible,
canvas:focus-visible,
[tabindex='0']:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 4px;
}
button:disabled {
  opacity: 0.5;
  cursor: wait;
  box-shadow: none;
}
.page-header {
  align-items: center;
  margin-bottom: 0;
  padding-bottom: 21px;
}
.header-utility {
  display: flex;
  align-items: flex-end;
  flex-direction: column;
  gap: 12px;
}
.edition-label {
  font-size: 11px;
  letter-spacing: 0.09em;
  color: var(--muted);
}
.header-utility .music-button {
  position: static;
  display: flex;
  align-items: center;
  gap: 9px;
  width: auto;
  height: auto;
  min-height: 40px;
  padding: 8px 13px;
  font-size: 11px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: #faf7f0;
  color: #5a635c;
  box-shadow: none;
}
.music-button > span {
  font-size: 20px;
  line-height: 1;
}
.music-button strong {
  font-size: 10px;
  font-weight: 500;
  background: #eeeadd;
  border-radius: 5px;
  padding: 1px 6px;
}
.header-utility .music-button[aria-pressed='true'] {
  background: #dce9e5;
  border-color: #88aaa7;
  color: #365f64;
}
.music-button[aria-pressed='true'] strong {
  background: #c4ddd6;
}
.label-tag {
  font-size: 10px;
  line-height: 1.6;
  padding: 4px 9px;
  border: 1px solid #86a5a64d;
  border-radius: 6px;
  color: #47777d;
  background: #e4ece640;
  display: inline-block;
  white-space: nowrap;
  letter-spacing: 0.03em;
}
.reading-intro {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 25px;
  padding: 24px 3px 25px;
}
.reading-intro > div:first-child > p {
  display: inline;
  margin-left: 13px;
  font-size: 16px;
  letter-spacing: 0.03em;
}
.reading-intro small {
  display: block;
  font-size: 11px;
  color: var(--muted);
  margin-top: 9px;
}
.reading-actions {
  display: flex;
  gap: 18px;
  align-items: center;
  flex-shrink: 0;
}
.guide-link {
  display: inline-flex;
  align-items: center;
  gap: 25px;
  padding: 10px 17px;
  border-radius: 10px;
  border: 1px solid #639195;
  color: #355f64;
  text-decoration: none;
  background: #dce8e2;
  font-size: 12px;
}
.guide-link:hover {
  background: #cfdfd8;
}
.reading-actions > .text-link {
  font-size: 11px;
}
.reading-nav {
  position: sticky;
  top: 10px;
  z-index: 22;
  border: 1px solid #b4aea074;
  border-radius: 15px;
  background: #faf7f0ef;
  box-shadow: 0 10px 26px -22px #354d46a0;
  backdrop-filter: blur(16px);
  margin-bottom: 24px;
  overflow: hidden;
}
.chapter-links {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 4px;
  padding: 8px;
}
.chapter-links > a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 9px 13px;
  color: #6e6d60;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: 10px;
  min-height: 57px;
}
.chapter-links > a:hover {
  background: #edf0e8;
}
.chapter-number {
  font: 11px var(--mono);
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border: 1px solid #aaa59350;
  border-radius: 50%;
  flex-shrink: 0;
}
.chapter-links strong {
  font-size: 12px;
  font-weight: 500;
  display: block;
  white-space: nowrap;
}
.chapter-links small {
  font-size: 10px;
  display: block;
  color: #858273;
  white-space: nowrap;
}
.chapter-links > a[aria-current] {
  background: #e0ebe5;
  border-color: #7c9d9859;
  color: #2e6065;
}
.chapter-links > a[aria-current] .chapter-number {
  border-color: #5d8b8d;
  background: #639193;
  color: #fff;
}
.chapter-links > a[aria-current] small {
  color: #527373;
}
.reading-position {
  display: flex;
  align-items: center;
  gap: 15px;
  padding: 6px 18px 9px;
  border-top: 1px solid var(--line);
  font-size: 10px;
  color: #6e786d;
}
.reading-position > span:first-child {
  min-width: 144px;
}
.reading-position > span:last-child {
  font: 9px var(--mono);
  min-width: 28px;
  text-align: right;
}
.reading-position progress {
  flex: 1;
  min-width: 0;
  width: auto;
  height: 3px;
  border: 0;
  border-radius: 3px;
  appearance: none;
  background: #e4e1d5;
  color: #709896;
}
.reading-position progress::-webkit-progress-bar {
  background: #e4e1d5;
  border-radius: 3px;
}
.reading-position progress::-webkit-progress-value {
  background: #709896;
  border-radius: 3px;
}
.reading-position progress::-moz-progress-bar {
  background: #709896;
  border-radius: 3px;
}
.view-switch {
  gap: 10px;
  padding: 14px 22px;
  background: #f7f5ec;
}
.view-switch button {
  min-height: 46px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 15px;
  border: 1px solid #b6b0a74a;
  font-size: 12px;
  background: #faf8f0;
}
.view-switch small {
  margin: 0;
  font-family: inherit;
  font-size: 10px;
  color: #77796b;
}
.view-switch button[data-view][aria-pressed='true'] {
  border-color: #779b9c;
  background: #dce9e4;
  color: #2e646b;
  box-shadow: inset 0 -2px #86aaa3;
}
.view-switch button[data-view][aria-pressed='true']::before {
  content: '✓';
  font-size: 11px;
}
.view-switch button:hover {
  border-color: #7c9c9b;
  background: #e8eee6;
}
.view-switch button small {
  display: inline;
}
.interaction-line {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: center;
  padding: 10px 25px;
  border-bottom: 1px solid var(--line);
  background: #f5f5ec70;
}
.interaction-line p {
  font-size: 11px;
  color: #707365;
  margin: 0;
}
.camera-state {
  font-size: 10px;
  color: #4d7976;
  white-space: nowrap;
}
.camera-state::before {
  content: '';
  display: inline-block;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  margin-right: 7px;
  background: #82a69b;
}
.camera-state[data-state='flying'] {
  color: #906d43;
}
.camera-state[data-state='flying']::before {
  background: #b88c54;
  animation: camera-pulse 1s ease-in-out infinite;
}
.camera-state[data-state='error'] {
  color: #936b4c;
}
.model-controls {
  right: 76px;
}
.model-controls button {
  font-size: 11px;
  min-height: 38px;
  padding: 7px 13px;
}
.model-controls [aria-pressed='true'] {
  border-color: #7da19b;
  background: #e1ebe4;
  color: #376b6b;
}
.profile summary {
  color: #4d6b65;
  font-size: 12px;
}
.profile details > div {
  font-size: 12px;
  line-height: 1.9;
}
.profile-europa {
  font-size: 12px;
}
.model-caption p {
  font-size: 11px;
}
.model-caption small {
  font-size: 9px;
}
.model-guide {
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  padding: 23px 27px;
  background: #f4f3e94d;
}
.model-guide p {
  font-size: 12px;
  color: #6b6e61;
  line-height: 1.9;
  margin: 9px 0;
}
.model-guide details summary {
  font-size: 11px;
  color: #547c7b;
  text-decoration: underline;
  text-underline-offset: 4px;
  width: fit-content;
}
.model-guide details[open] {
  margin-top: 10px;
}
.model-guide details[open] p {
  max-width: 540px;
}
kbd {
  display: inline-block;
  font: 10px var(--mono);
  border: 1px solid #bbb5a4;
  border-radius: 4px;
  padding: 1px 5px;
  background: #faf8f0;
}
.chapter-next {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 22px;
  border-top: 1px solid #9aada14d;
  padding: 22px 2px 0;
  margin-top: 30px;
}
.chapter-next > div > span {
  font-size: 10px;
  color: #688882;
  letter-spacing: 0.06em;
}
.chapter-next p {
  font-size: 14px;
  margin: 6px 0 0;
  color: #4f5d50;
}
.chapter-next > a {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  border: 1px solid #86a29866;
  border-radius: 10px;
  padding: 10px 15px;
  font-size: 12px;
  color: #416e6d;
  text-decoration: none;
  background: #e6ece150;
  white-space: nowrap;
}
.chapter-next > a:hover {
  background: #dde8e0;
  border-color: #81a198;
}
.model-panel > .chapter-next,
.orbit-panel > .chapter-next {
  margin: 0;
  padding: 22px 27px;
  background: #edf0e340;
}
.surface-intro p,
.terrain-card p:not(.eyebrow),
.europa-hero-copy > p:not(.eyebrow):not(.europa-caption),
.evidence-grid p,
.orbit-readout > p:not(.eyebrow):not(.note),
.mission-grid p,
.clipper-feature-intro p:not(.eyebrow) {
  font-size: 14px;
  line-height: 1.95;
  color: #646559;
}
.europa-hero-copy > p:not(.eyebrow):not(.europa-caption) {
  color: #d0dfd8;
}
.terrain-card .eyebrow {
  font-size: 10px;
}
.terrain-card .image-credit {
  font-size: 10px !important;
}
.photo-tag {
  font:
    10px/1.6 'Segoe UI',
    'Microsoft YaHei',
    sans-serif;
  padding: 5px 9px;
  letter-spacing: 0.04em;
}
.expand {
  width: auto;
  min-width: 94px;
  height: 35px;
  font-size: 11px;
  border-radius: 8px;
  padding: 0 12px;
}
.photo-button:hover .expand,
.europa-photo:hover .expand {
  background: #d8e8df;
  color: #345b58;
}
.europa-mark {
  font-size: 10px;
}
.panel-heading .micro {
  font-size: 10px;
  letter-spacing: 0.03em;
  color: #66827c;
}
.tab-guide {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}
.tab-guide > span:last-child {
  font: 10px var(--mono);
  color: #6d867e;
}
.layer-tabs {
  gap: 7px;
  margin-bottom: 22px;
}
.layer-tabs button {
  min-height: 44px;
  font-size: 12px;
}
.layer-tabs button[aria-selected='true'] {
  border-color: #769c9a;
  background: #dceae3;
  color: #2f646b;
  box-shadow: inset 0 -3px #81a5a0;
  font-weight: 600;
}
.layer-tabs button:hover {
  border-color: #86a59c;
}
.cutaway-labels text {
  font-size: 11px;
  fill: #787967;
}
.cutaway-labels .selected-layer {
  fill: #315f64;
  font-weight: 700;
  text-decoration: underline;
}
.cutaway-wrap .note {
  font-size: 11px;
  max-width: 340px;
}
#layer-copy,
.instrument-study #instrument-copy {
  font-size: 14px;
  line-height: 1.95;
  color: #626b5d;
  min-height: 112px;
}
.research-update p {
  font-size: 12px;
}
.research-update a {
  font-size: 11px;
}
.evidence-label {
  font-size: 10px;
  padding: 3px 7px;
  background: #e1e9de70;
  border-radius: 5px;
}
.phase-explanation {
  padding: 15px 16px;
  border: 1px solid #8aa69d59;
  border-radius: 12px;
  background: #e5ede460;
  margin: 19px 0;
}
.phase-explanation p {
  font-size: 12px;
  color: #557366;
  line-height: 1.9;
  margin: 9px 0 0;
}
.orbit-reading {
  font-size: 12px;
  padding: 11px 0;
}
.orbit-reading strong {
  font-size: 18px;
}
.experiment-guide {
  display: flex;
  align-items: center;
  gap: 13px;
  margin-bottom: 21px;
}
.experiment-guide p {
  font-size: 12px;
  color: #647364;
  margin: 0;
}
.timeline-head {
  font-size: 12px;
}
.phase-presets {
  gap: 9px;
}
.phase-presets button {
  font-size: 11px;
  min-height: 42px;
  padding: 7px 13px;
}
.phase-presets [aria-pressed='true'] {
  color: #2f656a;
  background: #deebe3;
  border-color: #7e9d95;
  box-shadow: inset 0 -2px #85a59d;
}
.timeline-actions button {
  min-height: 44px;
}
.interaction-feedback {
  margin: 16px 0 0;
  padding-left: 11px;
  border-left: 2px solid #8eafa4;
  font-size: 11px;
  color: #628076;
  line-height: 1.8;
}
.model-note {
  font-size: 11px;
  line-height: 1.9;
  padding-top: 10px;
}
.journey li.future > span {
  color: #806b50;
}
.journey strong {
  font-size: 15px;
}
.journey p {
  font-size: 12px;
}
.journey-source {
  font-size: 12px;
}
.mission-grid article > span {
  font-size: 10px;
}
.text-link {
  font-size: 12px;
}
.back-top {
  right: 22px;
  bottom: 22px;
  width: 38px;
  height: 38px;
  min-height: 38px;
}
.action-toast {
  position: fixed;
  z-index: 40;
  left: 50%;
  bottom: 25px;
  transform: translate(-50%, 8px);
  width: max-content;
  max-width: calc(100% - 70px);
  padding: 11px 18px;
  border: 1px solid #95aca0;
  border-radius: 12px;
  background: #f6faf1f5;
  box-shadow: 0 10px 35px #30473b23;
  font-size: 12px;
  line-height: 1.75;
  color: #3e6156;
  opacity: 0;
  pointer-events: none;
  transition:
    opacity 0.2s,
    transform 0.2s;
}
.action-toast.shown {
  opacity: 1;
  transform: translate(-50%, 0);
}
dialog[open] {
  align-items: start;
  grid-template-columns: 1.25fr 1fr;
}
.dialog-toolbar {
  grid-column: 1/-1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 13px;
  position: sticky;
  top: 0;
  z-index: 3;
  padding: 12px 17px;
  border-bottom: 1px solid var(--line);
  background: #f7f4e9f5;
  backdrop-filter: blur(10px);
}
.dialog-toolbar > span:nth-child(2) {
  margin-right: auto;
  font: 11px var(--mono);
  color: #6b7e72;
}
.dialog-toolbar > div {
  display: flex;
  gap: 7px;
}
.dialog-toolbar button {
  width: 40px;
  height: 40px;
  min-height: 40px;
  padding: 0;
  font-size: 18px;
  border-radius: 9px;
}
.dialog-toolbar .dialog-close {
  position: static;
  border-radius: 9px;
  font-size: 24px;
  background: #f4eee2;
}
.dialog-visual {
  position: relative;
  min-height: 240px;
  background: #111615;
  display: flex;
  align-items: center;
  align-self: stretch;
}
#dialog-image {
  display: block;
  max-height: 70dvh;
  width: 100%;
  object-fit: contain;
  align-self: center;
  transition: opacity 0.2s;
}
#dialog-image.loading {
  opacity: 0.2;
}
.photo-state {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 30px;
  color: #e4eee4;
  font-size: 13px;
  text-align: center;
}
.dialog-visual > #photo-retry {
  position: absolute;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
  font-size: 12px;
}
.dialog-copy {
  padding: 29px;
}
.dialog-copy h2 {
  font-size: 24px;
  line-height: 1.6;
  margin: 12px 0 20px;
}
.dialog-copy > p:not(.eyebrow) {
  font-size: 14px;
  line-height: 1.95;
  color: #666a5d;
}
.dialog-copy .dialog-hint {
  font-size: 11px !important;
  line-height: 1.9 !important;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  margin-top: 25px;
  color: #7c8878 !important;
}
@keyframes camera-pulse {
  50% {
    opacity: 0.35;
  }
}
@media (max-width: 1100px) {
  .chapter-links > a {
    padding: 9px;
    gap: 8px;
  }
  .chapter-links small {
    font-size: 9px;
  }
  .reading-intro {
    gap: 17px;
  }
  .reading-intro > div:first-child > p {
    font-size: 14px;
  }
  .reading-actions {
    gap: 12px;
  }
  .view-switch {
    gap: 8px;
  }
  .view-switch small {
    font-size: 9px;
  }
  .model-guide {
    gap: 25px;
  }
  .model-controls {
    right: 65px;
  }
  .dialog-copy {
    padding: 25px;
  }
}
@media (max-width: 760px) {
  .page-header {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    margin: 0;
    padding: 0 2px 19px;
  }
  .header-utility {
    gap: 8px;
    padding-top: 7px;
  }
  .edition-label {
    display: none;
  }
  .header-utility .music-button {
    font-size: 10px;
    gap: 6px;
    padding: 6px 9px;
    min-height: 36px;
  }
  .music-button > span {
    font-size: 16px;
  }
  .reading-intro {
    display: block;
    padding: 21px 2px;
  }
  .reading-intro > div:first-child > p {
    font-size: 14px;
    margin-left: 10px;
  }
  .reading-intro small {
    font-size: 11px;
    line-height: 1.8;
    max-width: 330px;
    margin: 10px 0 15px;
  }
  .reading-actions {
    gap: 15px;
  }
  .guide-link {
    padding: 8px 13px;
    gap: 18px;
    font-size: 11px;
    min-height: 40px;
  }
  .reading-actions > .text-link {
    font-size: 10px;
  }
  .reading-nav {
    top: 7px;
    border-radius: 12px;
    margin-bottom: 18px;
  }
  .chapter-links {
    display: flex;
    gap: 4px;
    overflow-x: auto;
    overscroll-behavior-x: contain;
    scrollbar-width: thin;
    padding: 6px;
    scrollbar-color: #a3b8a9 transparent;
  }
  .chapter-links > a {
    flex: 0 0 auto;
    min-width: 104px;
    gap: 8px;
    padding: 8px 9px;
    min-height: 56px;
  }
  .chapter-links strong {
    font-size: 11px;
  }
  .chapter-links small {
    font-size: 9px;
  }
  .chapter-number {
    width: 25px;
    height: 25px;
    font-size: 10px;
  }
  .reading-position {
    padding: 7px 11px;
    gap: 9px;
    font-size: 9px;
  }
  .reading-position > span:first-child {
    min-width: 118px;
  }
  .interaction-line {
    display: block;
    padding: 11px 16px;
  }
  .interaction-line p {
    font-size: 11px;
    line-height: 1.8;
  }
  .camera-state {
    display: inline-block;
    margin-top: 7px;
    font-size: 10px;
  }
  .view-switch {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 5px;
    padding: 10px;
  }
  .view-switch button {
    display: block;
    min-height: 56px;
    padding: 6px 2px;
    font-size: 11px;
  }
  .view-switch button small {
    display: block;
    font-size: 9px;
    margin-top: 3px;
  }
  .view-switch button[data-view][aria-pressed='true']::before {
    font-size: 9px;
    margin-right: 3px;
  }
  .profile summary {
    font-size: 11px;
  }
  .model-controls {
    padding: 2px 52px 16px 14px;
    gap: 5px;
    flex-wrap: wrap;
  }
  .model-controls button {
    font-size: 10px;
    min-height: 38px;
    padding: 7px 10px;
  }
  .model-caption p {
    font-size: 10px;
  }
  .model-guide {
    grid-template-columns: 1fr;
    padding: 20px 18px;
    gap: 19px;
  }
  .model-guide p {
    font-size: 12px;
    margin: 8px 0;
  }
  .chapter-next {
    align-items: flex-start;
    flex-direction: column;
    padding-top: 20px;
    gap: 14px;
  }
  .chapter-next p {
    font-size: 13px;
    line-height: 1.9;
  }
  .chapter-next > a {
    font-size: 11px;
    min-height: 42px;
    padding: 8px 13px;
  }
  .model-panel > .chapter-next,
  .orbit-panel > .chapter-next {
    padding: 20px 18px;
  }
  .surface-intro p,
  .terrain-card p:not(.eyebrow),
  .europa-hero-copy > p:not(.eyebrow):not(.europa-caption),
  .evidence-grid p,
  .orbit-readout > p:not(.eyebrow):not(.note),
  .mission-grid p,
  .clipper-feature-intro p:not(.eyebrow) {
    font-size: 13px;
    line-height: 1.95;
  }
  .terrain-card .image-credit {
    font-size: 9px !important;
  }
  .photo-tag {
    font-size: 9px;
    left: 12px;
    top: 12px;
  }
  .expand {
    right: 12px;
    bottom: 12px;
    min-width: 85px;
    font-size: 10px;
  }
  .panel-heading .micro {
    font-size: 8px;
    max-width: 115px;
  }
  .tab-guide {
    margin-bottom: 11px;
  }
  .label-tag {
    font-size: 9px;
  }
  .layer-tabs button {
    min-height: 43px;
    font-size: 11px;
    padding: 7px 5px;
  }
  #layer-copy,
  .instrument-study #instrument-copy {
    font-size: 13px;
    min-height: 112px;
  }
  .cutaway-wrap .note {
    font-size: 10px;
  }
  .phase-explanation p {
    font-size: 12px;
  }
  .orbit-reading strong {
    font-size: 17px;
  }
  .orbit-reading {
    font-size: 11px;
  }
  .experiment-guide {
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 18px;
  }
  .experiment-guide p {
    font-size: 12px;
    line-height: 1.8;
  }
  .experiment-guide > .label-tag {
    margin-top: 2px;
  }
  .timeline-head {
    font-size: 11px;
  }
  .phase-presets {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
    margin-bottom: 19px;
  }
  .phase-presets button {
    font-size: 11px;
    padding: 7px 8px;
    min-height: 42px;
  }
  .timeline-actions label {
    font-size: 11px;
  }
  .timeline-actions button {
    font-size: 11px;
    min-height: 42px;
  }
  .interaction-feedback {
    font-size: 11px;
    margin-top: 17px;
  }
  .model-note {
    font-size: 10px;
  }
  .journey p {
    font-size: 12px;
  }
  .journey strong {
    font-size: 14px;
  }
  .journey span {
    font-size: 10px;
  }
  .back-top {
    right: 9px;
    bottom: 15px;
    width: 35px;
    height: 35px;
    min-height: 35px;
  }
  .action-toast {
    font-size: 11px;
    bottom: 17px;
    max-width: calc(100% - 65px);
    padding: 10px 14px;
  }
  .dialog-toolbar {
    gap: 10px;
    padding: 10px 12px;
  }
  .dialog-toolbar button {
    width: 36px;
    height: 36px;
    min-height: 36px;
  }
  .dialog-toolbar > span:nth-child(2) {
    font-size: 10px;
  }
  .dialog-toolbar > div {
    gap: 5px;
  }
  dialog[open] {
    display: block;
  }
  .dialog-visual {
    min-height: 180px;
  }
  #dialog-image {
    max-height: 52dvh;
  }
  .dialog-copy {
    padding: 23px;
  }
  .dialog-copy h2 {
    font-size: 21px;
  }
  .dialog-copy > p:not(.eyebrow) {
    font-size: 13px;
  }
  .dialog-copy .dialog-hint {
    font-size: 10px !important;
  }
}
@media (max-width: 370px) {
  .reading-intro > div:first-child > p {
    font-size: 13px;
    margin-left: 6px;
  }
  .header-utility .music-button {
    font-size: 9px;
    padding: 6px;
  }
  .header-utility .music-button > span {
    display: none;
  }
  .reading-actions {
    gap: 12px;
  }
  .view-switch button {
    font-size: 10px;
  }
  .view-switch button small {
    font-size: 8px;
  }
  .model-controls button {
    font-size: 9px;
    padding: 7px 8px;
  }
  .dialog-toolbar > .label-tag {
    font-size: 9px;
    padding: 3px 6px;
  }
  .dialog-toolbar button {
    width: 33px;
  }
  .dialog-toolbar {
    gap: 8px;
  }
  .model-guide {
    padding: 19px 16px;
  }
  .journey strong {
    font-size: 13px;
    margin-left: 8px;
  }
}

/* Expanded editorial copy: keep a comfortable measure and natural panel height. */
.exploration-essay {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 48px;
  margin: 42px 4px 8px;
  padding: 32px 0 20px;
  border-top: 1px solid #8da99d66;
}
.exploration-essay h3 {
  font-size: 27px;
  font-weight: 450;
  line-height: 1.65;
  margin: 12px 0 20px;
}
.exploration-essay > div:last-child {
  max-width: 710px;
}
.exploration-essay > div:last-child > p {
  font-size: 14px;
  line-height: 2.05;
  color: #646b5d;
  margin: 0 0 17px;
}
.surface-intro > div:first-child {
  max-width: 580px;
}
.terrain-card > div > p:not(.eyebrow):not(.image-credit) {
  margin: 12px 0;
}
.mission-grid article {
  display: flex;
  flex-direction: column;
}
.mission-grid article > .text-link,
.mission-grid article > a {
  margin-top: auto;
  padding-top: 10px;
}
@media (max-width: 760px) {
  .exploration-essay {
    grid-template-columns: 1fr;
    gap: 20px;
    margin: 32px 3px 8px;
    padding-top: 25px;
  }
  .exploration-essay h3 {
    font-size: 23px;
    margin: 10px 0 15px;
  }
  .exploration-essay h3 br {
    display: none;
  }
  .exploration-essay > div:last-child > p {
    font-size: 13px;
    line-height: 2.05;
  }
  .exploration-essay .eyebrow {
    font-size: 9px;
  }
  .clipper-feature-intro > p:not(.eyebrow) {
    margin-bottom: 16px;
  }
}