@charset "UTF-8";
:root {
  --paper: #f1ede4;
  --card: #faf8f2;
  --ink: #383e39;
  --muted: #7c7e72;
  --line: #dcdcd0;
  --accent: #82704d;
  --accent-soft: #eee7d7;
  --mono: 'Consolas', 'SFMono-Regular', monospace;
  --sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --radius: 20px;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 24px;
}
body {
  margin: 0;
  color: var(--ink);
  font: 14px/1.8 var(--sans);
  background-color: var(--paper);
  background-image:
    linear-gradient(#85795408 1px, transparent 1px),
    linear-gradient(90deg, #85795408 1px, transparent 1px);
  background-size: 112px 112px;
}
button,
a {
  -webkit-tap-highlight-color: transparent;
}
button {
  font: inherit;
  cursor: pointer;
  color: inherit;
}
a {
  color: inherit;
  text-decoration: none;
}
button,
a {
  touch-action: manipulation;
}
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 5px;
}
button {
  border: 0;
}
h1,
h2,
h3,
p {
  margin: 0;
}
img {
  display: block;
  max-width: 100%;
}
[hidden] {
  display: none !important;
}
::selection {
  background: #d9d6be;
}
.site-shell {
  width: min(1480px, calc(100% - 104px));
  margin: auto;
}
.sr-only,
.skip:not(:focus) {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}
.skip:focus {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 100;
  background: var(--card);
  padding: 12px;
}
.masthead {
  height: 108px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--line);
  gap: 50px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 13px;
  font: 12px/1.7 var(--mono);
  letter-spacing: 0.08em;
  font-weight: 700;
}
.brand svg {
  width: 38px;
  height: 38px;
  fill: none;
  stroke: var(--accent);
  stroke-width: 1.2;
}
.brand svg circle {
  fill: var(--accent);
  stroke: none;
}
.brand-sub {
  display: block;
  color: var(--muted);
  font-size: 9px;
  font-weight: 400;
  letter-spacing: 0.14em;
}
.masthead nav {
  display: flex;
  align-self: stretch;
  gap: 36px;
  margin-left: auto;
  font-size: 12px;
}
.masthead nav a {
  display: flex;
  align-items: center;
  position: relative;
  color: var(--muted);
}
.masthead nav a:hover,
.masthead nav a:focus-visible {
  color: var(--ink);
}
.masthead .nav-current {
  color: var(--ink);
}
.nav-current::after {
  content: '';
  position: absolute;
  bottom: -1px;
  height: 2px;
  background: var(--accent);
  width: 100%;
}
.edition {
  font: 10px var(--mono);
  letter-spacing: 0.06em;
  color: var(--muted);
  border-left: 1px solid var(--line);
  padding-left: 32px;
}
.edition > span,
.slash {
  margin: 0 9px;
  color: #aeafa1;
}
.intro {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  padding: 42px 0 37px;
  gap: 25px;
}
.eyebrow {
  font: 10px/1.6 var(--mono);
  letter-spacing: 0.13em;
  color: var(--accent);
}
h1 {
  display: flex;
  align-items: baseline;
  gap: 25px;
  font-size: clamp(36px, 4vw, 54px);
  font-weight: 550;
  letter-spacing: 0.06em;
  line-height: 1.7;
}
h1 > span {
  font:
    normal clamp(15px, 1.8vw, 24px) / 1.3 Georgia,
    'Times New Roman',
    serif;
  letter-spacing: 0.11em;
  color: var(--accent);
}
.intro-copy {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin-top: 3px;
}
.intro-note {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 3px;
}
.small-orbit {
  font:
    44px/1 Georgia,
    serif;
  color: #a3987e;
}
.intro-note p {
  font-size: 11px;
  line-height: 2;
  color: #777a6d;
}
.intro-note p span {
  font-size: 10px;
  color: #929386;
}
.observatory {
  border: 1px solid #d9d9cd;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--card);
  box-shadow: 0 14px 32px -22px #726b5140;
}
.panel-top {
  height: 63px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
  padding: 0 26px;
  gap: 16px;
}
.panel-top h2,
.section-heading h2 {
  font-size: 13px;
  font-weight: 550;
  letter-spacing: 0.09em;
}
.section-number {
  font: 10px var(--mono);
  color: #9a9b88;
  margin-right: 14px;
}
.micro {
  font: 10px/1.7 var(--mono);
  color: #85877b;
  letter-spacing: 0.035em;
}
.explorer-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 330px;
  min-height: 573px;
}
.map-panel {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
  overflow: hidden;
  background: radial-gradient(ellipse at 45% 54%, #eae5d538, transparent 65%);
}
.map-caption {
  position: absolute;
  left: 27px;
  top: 24px;
  z-index: 1;
  pointer-events: none;
}
.map-caption .eyebrow {
  font-size: 9px;
  color: #898c7d;
}
.map-caption p {
  font-size: 11px;
  color: #909183;
  margin-top: 3px;
}
.star-map {
  position: relative;
  width: 100%;
  aspect-ratio: 920/630;
}
.orbit-chart {
  width: 100%;
  height: 100%;
  display: block;
  overflow: visible;
}
.axis {
  stroke: #e3e2d8;
  stroke-width: 1;
  stroke-dasharray: 2 6;
}
.orbital-paths ellipse {
  fill: none;
  stroke: #d7d6c9;
  stroke-width: 1;
  transition:
    stroke 0.35s,
    stroke-width 0.35s;
}
.orbital-paths ellipse.selected {
  stroke: var(--accent);
  stroke-width: 1.5;
  stroke-dasharray: 4 5;
}
.orbital-paths .belt {
  stroke: #bfbba4;
  stroke-width: 15;
  stroke-dasharray: 1 8;
  opacity: 0.35;
}
.map-registration {
  stroke: #bdbfad;
  stroke-width: 1;
  fill: none;
  opacity: 0.7;
}
.map-zone {
  fill: #a1a18f;
  font: 9px var(--sans);
  letter-spacing: 2px;
}
.map-zone.english {
  font: 7px var(--mono);
  letter-spacing: 1px;
}
.sun {
  position: absolute;
  left: 48.913%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 37px;
  text-align: center;
}
.sun-disc {
  display: block;
  width: 37px;
  height: 37px;
  border: 1px solid #ddbe7d;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #f9eab9, #e9c577 60%, #d9b269);
  box-shadow:
    0 0 0 7px #e6c97614,
    0 0 0 16px #e6c9760c;
}
.sun-name {
  display: block;
  position: absolute;
  top: 42px;
  left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
  color: #90815e;
  font-size: 10px;
}
.sun-name small {
  font: 7px var(--mono);
  letter-spacing: 0.13em;
  display: block;
  opacity: 0.7;
}
.body-point {
  position: absolute;
  transform: translate(-50%, -50%);
  width: var(--hit);
  height: var(--hit);
  min-width: 44px;
  min-height: 44px;
  border-radius: 50%;
  background: transparent;
  padding: 0;
  display: grid;
  place-items: center;
  isolation: isolate;
}
.body-point::before {
  content: '';
  position: absolute;
  width: calc(var(--size) + 13px);
  height: calc(var(--size) + 13px);
  border: 1px solid transparent;
  border-radius: 50%;
  transition:
    border-color 0.25s,
    background 0.25s;
  z-index: -1;
}
.body-point:hover::before,
.body-point:focus-visible::before {
  border-color: #b4ae97;
  background: #eee8d459;
}
.body-point[aria-pressed='true']::before {
  border-color: var(--accent);
  background: #e9e2cf39;
  box-shadow: 0 0 0 5px #baab810b;
}
.body-point img {
  position: absolute;
  width: var(--size);
  height: var(--size);
  max-width: none;
  object-fit: contain;
  filter: drop-shadow(2px 5px 3px #6e624e16);
  transition: transform 0.3s;
}
.body-point:hover img {
  transform: scale(1.09);
}
.body-point[data-select='saturn'] img {
  width: calc(var(--size) * 1.5);
  height: calc(var(--size) * 1.5);
}
.body-label {
  position: absolute;
  top: calc(50% + var(--size) / 2 + 9px);
  left: 50%;
  transform: translateX(-50%);
  font-size: 11px;
  line-height: 1.6;
  white-space: nowrap;
  color: #656e62;
  transition: color 0.25s;
}
.body-label small {
  display: block;
  font: 7px/1.7 var(--mono);
  letter-spacing: 0.1em;
  color: #9c9f90;
}
.body-point[aria-pressed='true'] .body-label {
  color: var(--accent);
  font-weight: 600;
}
.body-point[aria-pressed='true'] .body-label::before {
  content: '';
  width: 4px;
  height: 4px;
  background: var(--accent);
  display: inline-block;
  margin: 0 5px 2px 0;
  border-radius: 50%;
}
.body-point.unavailable .body-label {
  color: #979b8d;
}
.body-point.unavailable .body-label small {
  font: 8px/1.7 var(--sans);
  letter-spacing: 0.06em;
}
.schematic-planet {
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: #bcc8bf;
  box-shadow: inset -4px -2px 3px #728d8038;
  opacity: 0.75;
  border: 1px solid #90a89966;
}
.schematic-planet.uranus {
  width: 25px;
  height: 25px;
  background: #c9dddd;
  box-shadow: inset -6px -3px 5px #93b5b642;
  border-color: #a9c7c766;
}
.map-bottom {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  padding: 0 25px 20px;
  color: #929485;
  font-size: 9px;
  line-height: 1.6;
  margin-top: auto;
}
.map-bottom > span:first-child {
  display: flex;
  align-items: center;
  white-space: nowrap;
}
.legend-line {
  width: 15px;
  border-top: 1px solid #aba993;
  display: inline-block;
  margin-right: 7px;
}
.legend-dot {
  height: 4px;
  width: 4px;
  background: #9a9f88;
  display: inline-block;
  border-radius: 50%;
  margin: 0 7px 0 17px;
}
.destination {
  border-left: 1px solid var(--line);
  background: linear-gradient(145deg, #f8f6ef, #f4f1e8);
  padding: 25px 25px 20px;
  display: flex;
  flex-direction: column;
  --accent: #82704d;
}
.destination-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 9px;
}
.destination-top .eyebrow {
  font-size: 9px;
  letter-spacing: 0.1em;
}
.type-tag {
  font-size: 9px;
  color: var(--accent);
  padding: 2px 7px;
  border: 1px solid #b3aa8b5c;
  border-radius: 4px;
  white-space: nowrap;
}
.planet-portrait {
  position: relative;
  display: grid;
  place-items: center;
  isolation: isolate;
  aspect-ratio: 1.5;
  margin-top: 3px;
}
.planet-portrait::before {
  content: '';
  width: 134px;
  height: 134px;
  border-radius: 50%;
  border: 1px solid #c6c4b42b;
  position: absolute;
  z-index: -1;
}
.planet-portrait img {
  width: 220px;
  height: 220px;
  object-fit: contain;
  max-width: 100%;
  filter: drop-shadow(0 12px 7px #81765711);
  animation: arrive 0.5s both;
}
.planet-portrait[data-body='saturn'] img {
  width: 265px;
  height: 215px;
  max-width: 120%;
}
.portrait-word {
  font:
    54px/0.9 Georgia,
    serif;
  letter-spacing: 0.05em;
  color: #8e886f0c;
  position: absolute;
  top: 45%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: -1;
  white-space: nowrap;
}
.portrait-cross {
  position: absolute;
  bottom: 5px;
  right: 3px;
  color: #b5b5a3;
  font: 15px var(--mono);
}
.portrait-placeholder {
  width: 110px;
  height: 110px;
  border: 1px dashed #a4bcb0;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #e2e9dc, #a2b5a94d);
  position: relative;
}
.portrait-placeholder::after {
  content: '档案待补充';
  position: absolute;
  top: 120%;
  left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
  font-size: 10px;
  color: #8a958a;
}
.destination-title {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin: 3px 0;
}
.destination-title h3 {
  font-size: 29px;
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: 0.08em;
}
.destination-title > span {
  font: 10px var(--mono);
  letter-spacing: 0.16em;
  color: var(--accent);
}
.destination-poem {
  font-size: 12px;
  color: var(--accent);
  margin-top: 9px;
}
.destination-description {
  font-size: 11px;
  color: #828577;
  line-height: 1.95;
  margin-top: 8px;
  min-height: 65px;
}
.destination-facts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid var(--line);
  padding-top: 15px;
  margin: 15px 0 19px;
}
.destination-facts div + div {
  padding-left: 16px;
  border-left: 1px solid var(--line);
}
.destination-facts dt {
  font-size: 9px;
  color: #8a8d7d;
}
.destination-facts dd {
  font: 22px/1.6 var(--mono);
  margin: 2px 0 0;
  letter-spacing: -0.05em;
}
.destination-facts small {
  font: 9px var(--sans);
  letter-spacing: 0;
  margin-left: 6px;
  color: #969987;
}
.enter-link {
  background: var(--accent);
  color: #fcfbf6;
  border: 1px solid var(--accent);
  border-radius: 8px;
  min-height: 45px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 15px;
  font-size: 12px;
  letter-spacing: 0.08em;
  transition:
    filter 0.2s,
    transform 0.2s;
}
.enter-link:hover {
  filter: brightness(0.9);
  transform: translateY(-1px);
}
.enter-link svg {
  width: 16px;
  height: 16px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1;
  opacity: 0.7;
}
.entry-note {
  font-size: 9px;
  letter-spacing: 0.04em;
  color: #999a89;
  text-align: center;
  margin-top: 9px;
}
.unavailable-note {
  padding: 12px 14px;
  background: #e8eadd;
  border: 1px solid #d4d9c7;
  border-radius: 8px;
  font-size: 11px;
  color: #74806c;
}
.catalog {
  margin-top: 32px;
}
.section-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 17px;
  gap: 20px;
}
.planet-catalog {
  display: grid;
  grid-template-columns: repeat(8, minmax(0, 1fr));
  gap: 10px;
}
.planet-card {
  position: relative;
  min-width: 0;
  padding: 13px 10px 12px;
  border: 1px solid #dadbcf;
  background: #f8f6ef9c;
  border-radius: 12px;
  text-align: left;
  transition:
    background 0.2s,
    border-color 0.2s,
    transform 0.2s;
}
.planet-card:hover {
  transform: translateY(-3px);
  background: #fdfcf7;
  border-color: #b4b9a4;
}
.planet-card[aria-pressed='true'] {
  border-color: var(--accent);
  background: var(--accent-soft);
  box-shadow: 0 2px 8px #7166490c;
}
.planet-card[aria-pressed='true'] .card-marker {
  background: var(--accent);
  color: var(--card);
  border-color: var(--accent);
}
.card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font: 8px var(--mono);
  color: #a3a38e;
}
.card-marker {
  display: grid;
  place-items: center;
  width: 13px;
  height: 13px;
  border: 1px solid #c1c4b3;
  border-radius: 50%;
  font-size: 9px;
  color: transparent;
}
.card-image {
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 4px -5px;
}
.card-image img {
  width: 80px;
  height: 80px;
  object-fit: contain;
  filter: drop-shadow(0 5px 4px #7e715911);
}
.planet-card[data-select='saturn'] img {
  width: 113px;
  max-width: none;
  height: 90px;
}
.card-image .schematic-planet {
  width: 39px;
  height: 39px;
  border-style: dashed;
  opacity: 0.55;
  box-shadow: inset -8px -6px 12px #63847236;
}
.planet-card h3 {
  font-size: 12px;
  font-weight: 500;
  line-height: 1.8;
}
.card-english {
  font: 8px var(--mono);
  letter-spacing: 0.08em;
  color: #8f9485;
  margin-top: 2px;
}
.card-status {
  font-size: 9px;
  line-height: 1.8;
  color: #959984;
  margin-top: 9px;
  border-top: 1px solid #d8dac956;
  padding-top: 7px;
  white-space: nowrap;
}
.planet-card.unavailable {
  background: #eeefe568;
  border-style: dashed;
}
.planet-card.unavailable .card-marker {
  width: auto;
  border: 0;
  color: #9d9f90;
  font: 8px var(--sans);
}
.planet-card.unavailable[aria-pressed='true'] {
  background: #e5ebdf;
}
.satellite-note {
  display: flex;
  align-items: center;
  gap: 24px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin-top: 25px;
  padding: 18px 5px;
}
.moon-thumbnail {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  flex-shrink: 0;
  background: #e6e7d780;
}
.moon-thumbnail img {
  width: 88px;
  height: 88px;
}
.satellite-copy .eyebrow {
  font-size: 8px;
}
.satellite-copy .eyebrow > span {
  padding: 0 8px;
  color: #a4ac99;
}
.satellite-copy h3 {
  font-size: 18px;
  font-weight: 500;
  letter-spacing: 0.05em;
  margin-top: 4px;
}
.satellite-copy h3 > span {
  font: 10px var(--mono);
  color: #8a9784;
  letter-spacing: 0.13em;
  margin-left: 12px;
}
.satellite-copy > p:last-child {
  color: #8a8f7d;
  font-size: 10px;
  margin-top: 2px;
}
.moon-select {
  margin-left: auto;
  padding: 10px 19px;
  border: 1px solid #c5cebb;
  border-radius: 8px;
  background: transparent;
  text-align: left;
  font-size: 11px;
  transition: background 0.2s;
}
.moon-select span {
  display: block;
  font: 8px/1.8 var(--sans);
  color: #9ba38c;
  letter-spacing: 0.02em;
  margin-top: 3px;
}
.moon-select:hover,
.moon-select[aria-pressed='true'] {
  background: #e2e7d7;
}
.moon-entry {
  font-size: 11px;
  border-bottom: 1px solid #b8c1a9;
  line-height: 2.3;
  margin: 0 20px;
  color: #6d7d63;
}
.moon-entry:hover {
  color: #374a2c;
  border-color: #374a2c;
}
footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: center;
  padding: 30px 0 35px;
  font: 8px/1.8 var(--mono);
  color: #a0a18e;
  letter-spacing: 0.055em;
}
footer p span {
  padding: 0 8px;
}
footer > p:nth-child(2) {
  font: 9px var(--sans);
  letter-spacing: 0.03em;
}
footer a {
  font: 10px var(--sans);
  color: #828970;
  white-space: nowrap;
}
.no-script {
  margin: 25px 0;
  padding: 20px;
  border: 1px solid var(--line);
}
.no-script a {
  display: inline-block;
  padding: 10px;
  text-decoration: underline;
}
@keyframes arrive {
  from {
    opacity: 0;
    transform: translateY(5px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
@media (min-width: 1500px) {
  .explorer-layout {
    grid-template-columns: minmax(0, 1fr) 370px;
  }
  .destination {
    padding: 27px 30px 24px;
    justify-content: space-between;
  }
  .planet-portrait {
    margin-top: 8px;
    max-height: 260px;
    flex: 1;
  }
  .planet-portrait img {
    width: 260px;
    height: 260px;
  }
  .planet-portrait[data-body='saturn'] img {
    width: 310px;
    height: 260px;
  }
  .destination-description {
    font-size: 12px;
  }
  .destination-title h3 {
    font-size: 33px;
  }
  .card-image {
    height: 78px;
  }
}
@media (max-width: 1100px) {
  .site-shell {
    width: calc(100% - 56px);
  }
  .masthead {
    height: 94px;
    gap: 28px;
  }
  .edition {
    padding-left: 22px;
  }
  .intro {
    padding: 30px 0;
  }
  .explorer-layout {
    grid-template-columns: minmax(0, 1fr) 300px;
  }
  .destination {
    padding: 22px;
  }
  .star-map {
    min-height: 425px;
  }
  .map-caption {
    top: 24px;
    left: 20px;
  }
  .map-caption p {
    max-width: 140px;
  }
  .map-bottom {
    flex-direction: column;
    gap: 7px;
    padding-inline: 20px;
  }
  .planet-catalog {
    gap: 7px;
  }
  .planet-card {
    padding-inline: 8px;
  }
  .card-status {
    font-size: 8px;
  }
  .body-label small {
    font-size: 6px;
  }
  .section-heading .micro {
    font-size: 9px;
  }
  .intro-note {
    gap: 12px;
  }
  .small-orbit {
    font-size: 34px;
  }
  .intro-note p {
    font-size: 10px;
  }
}
@media (max-width: 850px) {
  .site-shell {
    width: calc(100% - 40px);
  }
  .edition {
    display: none;
  }
  .masthead {
    height: 86px;
  }
  .intro-note {
    display: none;
  }
  .intro {
    padding: 27px 0;
  }
  .panel-top {
    padding: 0 20px;
    height: 57px;
  }
  .panel-top .micro {
    font-size: 8px;
  }
  .explorer-layout {
    grid-template-columns: 1fr;
  }
  .map-panel {
    min-height: 480px;
  }
  .star-map {
    min-height: 0;
    max-height: none;
  }
  .map-caption {
    top: 20px;
  }
  .map-bottom {
    flex-direction: row;
    padding-bottom: 17px;
  }
  .destination {
    border-left: 0;
    border-top: 1px solid var(--line);
    display: grid;
    grid-template-columns: 210px minmax(0, 1fr);
    column-gap: 23px;
    padding: 22px;
  }
  .destination-top {
    grid-column: 1/-1;
    margin-bottom: 12px;
  }
  .planet-portrait {
    align-self: center;
    margin-top: 0;
    grid-column: 1;
    grid-row: 2;
    aspect-ratio: 1;
  }
  .planet-portrait img {
    width: 210px;
    height: 210px;
  }
  .planet-portrait[data-body='saturn'] img {
    width: 230px;
    height: 230px;
    max-width: 115%;
  }
  .portrait-word {
    font-size: 43px;
  }
  .portrait-cross {
    bottom: 20px;
  }
  .destination-copy {
    grid-column: 2;
    grid-row: 2;
  }
  .destination-title h3 {
    font-size: 27px;
  }
  .destination-poem {
    margin-top: 7px;
  }
  .destination-description {
    min-height: 0;
    font-size: 11px;
  }
  .destination-facts {
    margin: 13px 0;
    padding-top: 10px;
  }
  .destination-facts dd {
    font-size: 20px;
  }
  .planet-catalog {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 10px;
  }
  .planet-card {
    padding: 12px 15px;
  }
  .card-image {
    height: 68px;
  }
  .card-image img {
    width: 85px;
    height: 85px;
  }
  .card-status {
    font-size: 9px;
  }
  .catalog {
    margin-top: 27px;
  }
  .section-heading .micro {
    display: none;
  }
  .satellite-note {
    gap: 16px;
  }
  .moon-entry {
    margin: 0 7px;
  }
  .satellite-copy .eyebrow {
    font-size: 7px;
    letter-spacing: 0.03em;
  }
  footer > p:nth-child(2) {
    max-width: 200px;
    line-height: 1.7;
    text-align: center;
  }
}
@media (max-width: 540px) {
  .site-shell {
    width: calc(100% - 28px);
  }
  .masthead {
    height: 76px;
    gap: 15px;
  }
  .brand {
    gap: 8px;
    font-size: 10px;
  }
  .brand svg {
    width: 31px;
    height: 31px;
  }
  .brand-sub {
    font-size: 7px;
    letter-spacing: 0.1em;
  }
  .masthead nav {
    gap: 18px;
    font-size: 10px;
  }
  .intro {
    padding: 22px 2px 26px;
  }
  .intro .eyebrow {
    font-size: 7px;
    letter-spacing: 0.1em;
  }
  h1 {
    font-size: 36px;
    gap: 16px;
    line-height: 1.75;
  }
  h1 > span {
    font-size: 14px;
    letter-spacing: 0.08em;
  }
  .intro-copy {
    font-size: 10px;
    letter-spacing: 0.035em;
  }
  .observatory {
    border-radius: 15px;
  }
  .panel-top {
    height: 52px;
    padding: 0 15px;
  }
  .panel-top h2 {
    font-size: 11px;
    letter-spacing: 0.04em;
  }
  .section-number {
    margin-right: 9px;
    font-size: 9px;
  }
  .panel-top .micro {
    font-size: 0;
  }
  .panel-top .micro::after {
    content: '点击星球，选择目的地';
    font: 8px var(--sans);
  }
  .panel-top .slash {
    display: none;
  }
  .map-panel {
    min-height: 340px;
    justify-content: center;
    padding-top: 34px;
  }
  .map-caption {
    left: 16px;
    top: 14px;
  }
  .map-caption .eyebrow {
    font-size: 7px;
  }
  .map-caption p {
    display: none;
  }
  .star-map {
    aspect-ratio: 920/700;
    margin: 14px 0 24px;
  }
  .orbit-chart {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
  }
  .body-point {
    --size: var(--mobile-size) !important;
  }
  .body-point img {
    max-width: 70px;
  }
  .body-label {
    font-size: 9px;
    top: calc(50% + var(--size) / 2 + 4px);
  }
  .body-label small {
    display: none;
  }
  .body-point.unavailable .body-label small {
    display: none;
  }
  .sun {
    width: 24px;
  }
  .sun-disc {
    width: 24px;
    height: 24px;
    box-shadow: 0 0 0 5px #e6c97614;
  }
  .sun-name {
    font-size: 8px;
    top: 29px;
  }
  .sun-name small {
    font-size: 6px;
  }
  .map-zone {
    font-size: 11px;
  }
  .map-zone.english {
    display: none;
  }
  .map-bottom {
    font-size: 7px;
    padding: 5px 15px 15px;
    gap: 5px;
  }
  .legend-dot {
    margin-left: 8px;
  }
  .legend-line {
    width: 10px;
    margin-right: 4px;
  }
  .destination {
    padding: 17px;
    grid-template-columns: 105px minmax(0, 1fr);
    column-gap: 13px;
  }
  .destination-top {
    margin-bottom: 12px;
  }
  .destination-top .eyebrow {
    font-size: 8px;
  }
  .type-tag {
    font-size: 8px;
  }
  .planet-portrait {
    align-self: start;
    position: relative;
    margin-top: 9px;
    width: 105px;
    height: 118px;
  }
  .planet-portrait::before {
    width: 92px;
    height: 92px;
  }
  .planet-portrait img {
    width: 126px;
    height: 126px;
    max-width: none;
  }
  .planet-portrait[data-body='saturn'] img {
    width: 155px;
    height: 155px;
    max-width: none;
  }
  .portrait-word {
    font-size: 22px;
    top: 80%;
    color: #8e886f12;
  }
  .portrait-cross {
    display: none;
  }
  .destination-title {
    gap: 9px;
    margin: 2px 0;
  }
  .destination-title h3 {
    font-size: 24px;
  }
  .destination-title > span {
    font-size: 8px;
    letter-spacing: 0.09em;
  }
  .destination-poem {
    font-size: 10px;
    margin-top: 8px;
  }
  .destination-description {
    font-size: 10px;
    margin-top: 6px;
    line-height: 1.9;
  }
  .destination-copy {
    display: contents;
  }
  .destination-title,
  .destination-poem,
  .destination-description {
    grid-column: 2;
  }
  .destination-title {
    grid-row: 2;
    align-self: start;
    height: 34px;
  }
  .destination-poem {
    grid-row: 2;
    align-self: start;
    margin-top: 41px;
  }
  .destination-description {
    grid-row: 2;
    align-self: start;
    margin-top: 69px;
    min-height: 70px;
  }
  .destination-facts {
    grid-column: 1/-1;
    margin-top: 20px;
    margin-bottom: 15px;
    gap: 12px;
    grid-row: 3;
  }
  .destination-facts dt {
    font-size: 9px;
  }
  .destination-facts dd {
    font-size: 21px;
  }
  .destination-facts div + div {
    padding-left: 25px;
  }
  .enter-link,
  .unavailable-note {
    grid-column: 1/-1;
    grid-row: 4;
    min-height: 44px;
    font-size: 11px;
  }
  .entry-note {
    grid-column: 1/-1;
    grid-row: 5;
    font-size: 8px;
  }
  .portrait-placeholder {
    width: 74px;
    height: 74px;
  }
  .portrait-placeholder::after {
    font-size: 8px;
  }
  .section-heading h2 {
    font-size: 11px;
    letter-spacing: 0.02em;
  }
  .catalog {
    margin-top: 26px;
  }
  .section-heading {
    margin-bottom: 14px;
  }
  .planet-catalog {
    gap: 8px;
  }
  .planet-card {
    padding: 10px 8px;
  }
  .card-top {
    font-size: 7px;
  }
  .card-image {
    height: 57px;
    margin: 3px -7px;
  }
  .card-image img {
    width: 68px;
    height: 68px;
  }
  .planet-card[data-select='saturn'] img {
    width: 90px;
    height: 80px;
  }
  .card-image .schematic-planet {
    width: 32px;
    height: 32px;
  }
  .planet-card h3 {
    font-size: 11px;
  }
  .card-english {
    font-size: 7px;
    letter-spacing: 0.02em;
  }
  .card-status {
    font-size: 8px;
    margin-top: 7px;
    padding-top: 6px;
    letter-spacing: -0.01em;
  }
  .planet-card.unavailable .card-marker {
    font-size: 7px;
  }
  .satellite-note {
    display: grid;
    grid-template-columns: 67px 1fr;
    gap: 10px 13px;
    padding: 18px 3px;
    margin-top: 23px;
  }
  .moon-thumbnail {
    width: 65px;
    height: 65px;
  }
  .moon-thumbnail img {
    width: 65px;
    height: 65px;
  }
  .satellite-copy .eyebrow {
    font-size: 7px;
  }
  .satellite-copy h3 {
    font-size: 16px;
    margin-top: 2px;
  }
  .satellite-copy h3 > span {
    font-size: 8px;
  }
  .satellite-copy > p:last-child {
    font-size: 9px;
  }
  .moon-select {
    grid-column: 1/-1;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 10px;
    padding: 10px 12px;
    min-height: 42px;
  }
  .moon-select span {
    margin: 0;
  }
  .moon-entry {
    grid-column: 1/-1;
    justify-self: center;
    font-size: 10px;
    margin-top: 3px;
  }
  footer {
    padding: 23px 0;
    gap: 12px;
    flex-wrap: wrap;
    font-size: 7px;
  }
  footer > p:nth-child(2) {
    order: 3;
    width: 100%;
    max-width: none;
    text-align: left;
    font-size: 8px;
  }
  footer a {
    font-size: 9px;
  }
}
@media (max-width: 540px) {
  .star-map {
    aspect-ratio: 920/630;
  }
  .body-point {
    width: max(44px, var(--mobile-size));
    height: max(44px, var(--mobile-size));
  }
  .planet-portrait img {
    width: 105px;
    height: 105px;
  }
  .planet-portrait[data-body='saturn'] img {
    width: 120px;
    height: 120px;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}