:root {
  color-scheme: dark;
  --space: #070b17;
  --surface: rgba(15, 21, 39, 0.82);
  --surface-raised: rgba(19, 28, 49, 0.91);
  --border: rgba(178, 193, 239, 0.14);
  --text: #f1f3fc;
  --muted: #a7aec6;
  --soft: #777f9b;
  --violet: #a99aff;
  --cyan: #92dce9;
  --gold: #f2d29a;
  --serif: Georgia, "Noto Serif TC", "Songti TC", serif;
  --sans: "Noto Sans TC", "Microsoft JhengHei", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  margin: 0;
  overflow-x: hidden;
  background: var(--space);
  color: var(--text);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}

button,
a {
  font: inherit;
}

a {
  color: inherit;
}

a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
}

.space-backdrop {
  position: fixed;
  z-index: -1;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  background:
    radial-gradient(ellipse at 76% 7%, rgba(56, 48, 101, 0.19), transparent 34rem),
    radial-gradient(ellipse at 10% 47%, rgba(27, 79, 105, 0.14), transparent 36rem),
    linear-gradient(155deg, #090d1c 0%, #080b17 48%, #0c1020 100%);
  background-repeat: no-repeat;
  background-size: 100% 100%, 100% 100%, 100% 100%;
}

.space-glow {
  position: absolute;
  top: -34rem;
  left: 50%;
  width: min(105rem, 130vw);
  aspect-ratio: 1;
  transform: translateX(-50%);
  border-radius: 50%;
  background: radial-gradient(ellipse, rgba(89, 80, 153, 0.13), transparent 68%);
}

.space-stars,
.space-stars::before,
.space-stars::after {
  position: absolute;
  inset: 0;
  content: "";
  pointer-events: none;
}

.space-stars {
  opacity: 0.55;
  background-image:
    radial-gradient(1px 1px at 12% 18%, #dce8ff 55%, transparent),
    radial-gradient(1px 1px at 72% 21%, #dce8ff 55%, transparent),
    radial-gradient(1.5px 1.5px at 39% 63%, #dce8ff 55%, transparent),
    radial-gradient(1px 1px at 84% 73%, #dce8ff 55%, transparent),
    radial-gradient(1px 1px at 28% 87%, #dce8ff 55%, transparent),
    radial-gradient(1.5px 1.5px at 94% 43%, #c3ccff 55%, transparent);
}

.space-stars::before {
  opacity: 0.4;
  background-image:
    radial-gradient(1px 1px at 18% 72%, #dce8ff 55%, transparent),
    radial-gradient(1px 1px at 63% 49%, #dce8ff 55%, transparent),
    radial-gradient(1px 1px at 48% 12%, #dce8ff 55%, transparent),
    radial-gradient(1px 1px at 88% 13%, #dce8ff 55%, transparent);
}

.site-header {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1320px, calc(100% - 64px));
  min-height: 76px;
  margin: 0 auto;
  border-bottom: 1px solid rgba(195, 204, 239, 0.09);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  text-decoration: none;
  font-size: 0.94rem;
  font-weight: 600;
  letter-spacing: 0.12em;
}

.brand-mark {
  display: grid;
  width: 31px;
  height: 31px;
  place-items: center;
  border: 1px solid rgba(169, 154, 255, 0.45);
  border-radius: 50%;
  color: var(--violet);
  box-shadow: 0 0 20px rgba(169, 154, 255, 0.12);
}

.header-note,
.header-return {
  color: var(--muted);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
}

.header-return {
  text-decoration: none;
  transition: color 180ms ease;
}

.header-return:hover,
.breadcrumbs a:hover {
  color: var(--cyan);
}

.home-main,
.explorer-main {
  width: min(1180px, calc(100% - 64px));
  margin: 0 auto;
}

.home-hero {
  display: flex;
  min-height: 330px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 66px 0 54px;
  text-align: center;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  color: var(--cyan);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.home-hero .eyebrow {
  justify-content: center;
}

.eyebrow-line {
  width: 22px;
  height: 1px;
  background: var(--cyan);
  opacity: 0.7;
}

.home-hero h1,
.page-title {
  margin: 0;
  font-family: var(--serif);
  font-weight: 400;
  letter-spacing: 0.06em;
}

.home-hero h1 {
  font-size: clamp(2.4rem, 6vw, 4.6rem);
  line-height: 1.25;
}

.home-hero h1 span {
  display: block;
  color: #c8c0ff;
}

.hero-copy,
.page-intro {
  color: var(--muted);
  line-height: 1.9;
}

.hero-copy {
  max-width: 560px;
  margin: 20px 0 0;
  font-size: 1rem;
}

.start-cue {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  margin-top: 37px;
  color: var(--gold);
  font-size: 0.83rem;
  text-decoration: none;
  transition: color 180ms ease, transform 180ms ease;
}

.start-cue:hover {
  color: #fff0cf;
  transform: translateY(2px);
}

.start-cue-icon {
  display: grid;
  width: 29px;
  height: 29px;
  place-items: center;
  border: 1px solid rgba(242, 210, 154, 0.4);
  border-radius: 50%;
}

.galaxy-section,
.catalog-section {
  padding: 22px 0 0;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 24px;
}

.section-heading .eyebrow {
  margin-bottom: 8px;
}

.section-heading h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  font-weight: 400;
  letter-spacing: 0.06em;
}

.section-hint {
  margin: 0 0 4px;
  color: var(--soft);
  font-size: 0.82rem;
}

.galaxy-grid,
.catalog-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 17px;
}

.map-section {
  margin-bottom: 48px;
}

.map-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 275px;
  gap: 15px;
}

.map-host,
.exploration-map-section {
  min-width: 0;
}

.map-console {
  min-width: 0;
}

.interactive-map {
  position: relative;
  min-height: 430px;
  overflow: hidden;
  border: 1px solid rgba(164, 173, 229, 0.18);
  border-radius: 17px;
  isolation: isolate;
  background:
    radial-gradient(ellipse at 48% 50%, rgba(84, 71, 146, 0.18), transparent 25%),
    radial-gradient(ellipse at 43% 47%, rgba(42, 87, 124, 0.17), transparent 48%),
    linear-gradient(140deg, rgba(10, 15, 30, 0.96), rgba(11, 16, 33, 0.91));
}

.interactive-map::before,
.interactive-map::after {
  position: absolute;
  z-index: -1;
  top: 50%;
  left: 50%;
  width: 52%;
  height: 22%;
  content: "";
  border-radius: 50%;
  transform: translate(-50%, -50%) rotate(-24deg);
  background: radial-gradient(ellipse, rgba(167, 146, 255, 0.17), rgba(94, 146, 185, 0.08) 30%, transparent 70%);
  filter: blur(8px);
}

.interactive-map::after {
  width: 70%;
  height: 1px;
  transform: translate(-50%, -50%) rotate(-24deg);
  background: linear-gradient(90deg, transparent, rgba(190, 185, 239, 0.16), transparent);
  filter: none;
}

.map-console-universe .interactive-map {
  min-height: 480px;
  background:
    radial-gradient(ellipse at 48% 50%, rgba(109, 86, 182, 0.24), transparent 22%),
    radial-gradient(ellipse at 51% 47%, rgba(48, 115, 156, 0.19), transparent 52%),
    linear-gradient(140deg, rgba(9, 14, 29, 0.97), rgba(11, 15, 31, 0.94));
}

.map-sector {
  position: absolute;
  z-index: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  padding: 14px 15px;
  overflow: hidden;
  border: 1px solid rgba(163, 177, 229, 0.14);
  border-radius: 12px;
  background:
    radial-gradient(ellipse at 50% 50%, var(--sector-glow), transparent 72%),
    rgba(14, 20, 39, 0.23);
  pointer-events: none;
}

.map-sector::after {
  position: absolute;
  right: 12px;
  bottom: 11px;
  width: 7px;
  height: 7px;
  content: "";
  border: 1px solid var(--sector-accent);
  border-radius: 50%;
  background: var(--sector-accent);
  box-shadow: 0 0 12px var(--sector-accent);
  opacity: 0.55;
}

.map-sector-0 {
  --sector-accent: #bb9cff;
  --sector-glow: rgba(130, 102, 210, 0.14);
}

.map-sector-1 {
  --sector-accent: #83d8e6;
  --sector-glow: rgba(70, 155, 181, 0.12);
}

.map-sector-2 {
  --sector-accent: #f0c68d;
  --sector-glow: rgba(196, 139, 86, 0.12);
}

.map-sector-3 {
  --sector-accent: #cf91d5;
  --sector-glow: rgba(170, 104, 189, 0.12);
}

.map-sector-index {
  color: var(--sector-accent);
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.map-sector-name {
  width: fit-content;
  max-width: 100%;
  margin-top: 4px;
  overflow: hidden;
  color: rgba(236, 237, 250, 0.76);
  font-family: var(--serif);
  font-size: clamp(0.82rem, 1.35vw, 1rem);
  font-weight: 400;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.map-console-solar-system .interactive-map {
  min-height: 500px;
  background:
    radial-gradient(ellipse at 50% 50%, rgba(236, 166, 98, 0.15), transparent 14%),
    radial-gradient(ellipse at 50% 50%, rgba(55, 68, 122, 0.13), transparent 62%),
    linear-gradient(140deg, rgba(9, 14, 28, 0.98), rgba(11, 16, 31, 0.95));
}

.map-star {
  position: absolute;
  width: var(--star-size);
  height: var(--star-size);
  border-radius: 50%;
  background: #dce5ff;
  opacity: var(--star-opacity);
  box-shadow: 0 0 5px rgba(205, 217, 255, 0.3);
}

.map-core {
  position: absolute;
  top: 50%;
  left: 50%;
  display: grid;
  width: 28px;
  height: 28px;
  place-items: center;
  transform: translate(-50%, -50%);
  border: 1px solid rgba(215, 199, 255, 0.5);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(250, 228, 191, 0.95), rgba(182, 150, 247, 0.55) 34%, rgba(109, 86, 185, 0.16) 72%, transparent);
  box-shadow: 0 0 34px rgba(188, 162, 255, 0.5), 0 0 100px rgba(133, 129, 223, 0.25);
  color: #e6dcff;
  font-size: 0.58rem;
  white-space: nowrap;
}

.map-core > span {
  position: absolute;
  top: calc(100% + 13px);
  left: 50%;
  transform: translateX(-50%);
  color: #aab2ce;
  font-size: 0.64rem;
}

.map-core-sun {
  display: none;
}

.orbit-layer {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
  pointer-events: none;
}

.orbit-line {
  fill: none;
  stroke: rgba(165, 177, 225, 0.16);
  stroke-width: 0.16;
  stroke-dasharray: 0.6 0.55;
}

.map-node {
  position: absolute;
  z-index: 2;
  display: grid;
  min-width: 32px;
  min-height: 32px;
  place-items: center;
  padding: 0;
  transform: translate(-50%, -50%);
  border: 0;
  border-radius: 50%;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  text-decoration: none;
  -webkit-tap-highlight-color: transparent;
}

.map-node:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
}

.map-node-marker {
  position: relative;
  display: block;
  width: 12px;
  height: 12px;
  border: 1px solid rgba(245, 244, 255, 0.86);
  border-radius: 50%;
  background: radial-gradient(circle at 34% 30%, #fff8df, #d2b7ff 42%, #8273ce 76%);
  box-shadow: 0 0 12px rgba(181, 159, 255, 0.7), 0 0 27px rgba(133, 121, 218, 0.33);
  transition: transform 170ms ease, box-shadow 170ms ease;
}

.map-node[data-visual="earth"] .map-node-marker {
  background: radial-gradient(circle at 32% 28%, #d7f4ff, #4da9db 44%, #305391);
  box-shadow: 0 0 15px rgba(111, 189, 255, 0.65);
}

.map-node[data-visual="sun"] .map-node-marker {
  width: 22px;
  height: 22px;
  background: radial-gradient(circle at 35% 31%, #fff7ce, #ffca76 48%, #e87552 82%);
  box-shadow: 0 0 23px rgba(255, 193, 111, 0.85), 0 0 62px rgba(248, 152, 94, 0.35);
}

.map-node-galaxy[data-palette="0"] .map-node-marker {
  border-color: #e4d7ff;
  background: radial-gradient(circle at 34% 30%, #fff8df, #d6bcff 42%, #8a72d0 76%);
  box-shadow: 0 0 14px rgba(188, 156, 255, 0.8), 0 0 30px rgba(133, 121, 218, 0.38);
}

.map-node-galaxy[data-palette="1"] .map-node-marker {
  border-color: #d7fbff;
  background: radial-gradient(circle at 34% 30%, #efffff, #8bdde7 42%, #397f9c 76%);
  box-shadow: 0 0 14px rgba(131, 216, 230, 0.8), 0 0 30px rgba(69, 153, 182, 0.38);
}

.map-node-galaxy[data-palette="2"] .map-node-marker {
  border-color: #fff0d6;
  background: radial-gradient(circle at 34% 30%, #fff8df, #f1c48b 42%, #a66a56 76%);
  box-shadow: 0 0 14px rgba(240, 198, 141, 0.8), 0 0 30px rgba(196, 139, 86, 0.38);
}

.map-node-galaxy[data-palette="3"] .map-node-marker {
  border-color: #ffe4ff;
  background: radial-gradient(circle at 34% 30%, #fff5ff, #d79bdb 42%, #865caa 76%);
  box-shadow: 0 0 14px rgba(207, 145, 213, 0.8), 0 0 30px rgba(170, 104, 189, 0.38);
}

.map-node:hover .map-node-marker,
.map-node.is-selected .map-node-marker {
  transform: scale(1.38);
  box-shadow: 0 0 19px rgba(201, 188, 255, 0.95), 0 0 43px rgba(151, 132, 235, 0.55);
}

.map-node-label {
  position: absolute;
  top: calc(100% + 7px);
  left: 50%;
  display: flex;
  min-width: max-content;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 4px 7px;
  transform: translateX(-50%);
  border: 1px solid rgba(188, 195, 232, 0.13);
  border-radius: 7px;
  background: rgba(7, 11, 23, 0.81);
  color: #e6e8f4;
  font-size: 0.68rem;
  line-height: 1.3;
  pointer-events: none;
  transition: border-color 170ms ease, background 170ms ease;
}

.map-node-label strong {
  font-weight: 500;
}

.map-node-label .map-node-kicker {
  color: var(--sector-accent, var(--gold));
  font-size: 0.52rem;
  letter-spacing: 0.08em;
}

.map-console-universe .map-node-label {
  min-width: 0;
  padding: 5px 9px;
  border-color: var(--sector-accent);
  background: rgba(7, 11, 23, 0.94);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

.map-console-universe .map-node[data-palette="0"] {
  --sector-accent: #bb9cff;
}

.map-console-universe .map-node[data-palette="1"] {
  --sector-accent: #83d8e6;
}

.map-console-universe .map-node[data-palette="2"] {
  --sector-accent: #f0c68d;
}

.map-console-universe .map-node[data-palette="3"] {
  --sector-accent: #cf91d5;
}

.map-console-universe .map-node-label strong {
  white-space: nowrap;
}

.map-node-label small {
  color: var(--soft);
  font-size: 0.57rem;
}

.map-node:hover .map-node-label,
.map-node.is-selected .map-node-label {
  border-color: rgba(169, 154, 255, 0.45);
  background: rgba(15, 19, 38, 0.96);
}

.map-node.label-above .map-node-label {
  top: auto;
  bottom: calc(100% + 7px);
}

.map-caption {
  margin: 10px 0 0;
  color: var(--soft);
  font-size: 0.7rem;
  line-height: 1.7;
  text-align: right;
}

.map-focus {
  display: flex;
  min-height: 100%;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  padding: 25px 22px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: linear-gradient(160deg, rgba(18, 24, 44, 0.94), rgba(11, 15, 29, 0.89));
}

.map-focus .eyebrow {
  margin-bottom: 10px;
}

.map-focus h3 {
  margin: 0;
  font-family: var(--serif);
  font-size: 1.5rem;
  font-weight: 400;
}

.map-focus p:not(.eyebrow) {
  margin: 11px 0 0;
  color: var(--muted);
  font-size: 0.81rem;
  line-height: 1.75;
}

.map-focus .focus-type {
  color: var(--gold) !important;
  font-size: 0.74rem !important;
}

.focus-action {
  display: inline-flex;
  margin-top: 21px;
  padding: 10px 14px;
  border: 1px solid rgba(146, 220, 233, 0.34);
  border-radius: 999px;
  color: var(--cyan);
  font-size: 0.79rem;
  text-decoration: none;
  transition: background 180ms ease, border-color 180ms ease;
}

.focus-action:hover {
  border-color: rgba(146, 220, 233, 0.6);
  background: rgba(146, 220, 233, 0.08);
}

.galaxy-card,
.catalog-card,
.body-card {
  position: relative;
  display: flex;
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: linear-gradient(145deg, rgba(19, 26, 47, 0.88), rgba(11, 16, 31, 0.93));
  text-decoration: none;
  isolation: isolate;
  transition: border-color 220ms ease, transform 220ms ease, box-shadow 220ms ease;
}

.galaxy-card {
  min-height: 242px;
  align-items: end;
  padding: 26px 28px;
}

.galaxy-card:hover,
.catalog-card:hover,
.body-card:hover {
  transform: translateY(-4px);
  border-color: rgba(169, 154, 255, 0.42);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.24), 0 0 32px rgba(117, 111, 198, 0.08);
}

.galaxy-art {
  position: absolute;
  z-index: -1;
  inset: 0;
  overflow: hidden;
  opacity: 0.88;
  background:
    radial-gradient(ellipse at 80% 34%, rgba(146, 220, 233, 0.13), transparent 34%),
    linear-gradient(120deg, rgba(13, 17, 34, 0.88), transparent 75%);
}

.galaxy-art::before,
.galaxy-artwork::before {
  position: absolute;
  top: 4%;
  right: -3%;
  width: 65%;
  height: 92%;
  content: "";
  border-radius: 50%;
  transform: rotate(-24deg);
  background:
    radial-gradient(ellipse at center, transparent 10%, rgba(205, 190, 255, 0.65) 11%, rgba(143, 126, 238, 0.18) 14%, transparent 28%),
    radial-gradient(ellipse at center, transparent 27%, rgba(143, 126, 238, 0.38) 28%, rgba(96, 93, 171, 0.12) 31%, transparent 45%),
    radial-gradient(ellipse at center, rgba(167, 146, 255, 0.27), rgba(59, 71, 135, 0.1) 35%, transparent 64%);
  filter: blur(1px);
}

.galaxy-art[data-visual="andromeda"]::before,
.galaxy-artwork[data-visual="andromeda"]::before {
  right: 0;
  width: 75%;
  transform: rotate(-47deg) scaleY(0.5);
  background:
    radial-gradient(ellipse, rgba(249, 218, 180, 0.75) 0%, rgba(171, 146, 198, 0.48) 7%, transparent 52%),
    radial-gradient(ellipse at center, transparent 28%, rgba(173, 151, 218, 0.4) 30%, transparent 35%);
}

.galaxy-art[data-visual="triangulum"]::before,
.galaxy-artwork[data-visual="triangulum"]::before {
  right: 5%;
  width: 58%;
  transform: rotate(-38deg) scaleY(0.74);
  background:
    radial-gradient(ellipse, rgba(224, 214, 188, 0.66), rgba(144, 150, 195, 0.2) 12%, transparent 48%),
    radial-gradient(ellipse at 40% 55%, rgba(142, 128, 233, 0.32), transparent 55%);
}

.galaxy-art[data-visual="magellanic-cloud"]::before,
.galaxy-artwork[data-visual="magellanic-cloud"]::before {
  top: 10%;
  right: 2%;
  width: 56%;
  height: 78%;
  transform: rotate(-28deg);
  background:
    radial-gradient(ellipse at 32% 38%, rgba(125, 219, 228, 0.44), transparent 30%),
    radial-gradient(ellipse at 64% 57%, rgba(195, 148, 225, 0.45), transparent 36%),
    radial-gradient(ellipse at center, rgba(106, 143, 193, 0.2), transparent 65%);
}

.galaxy-card-content,
.catalog-card-content {
  display: flex;
  max-width: 78%;
  flex-direction: column;
  align-items: flex-start;
}

.card-overline {
  color: var(--cyan);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.1em;
}

.galaxy-card-title,
.catalog-card-title,
.body-card-title {
  display: block;
  margin-top: 7px;
  font-family: var(--serif);
  font-size: 1.45rem;
  letter-spacing: 0.05em;
}

.galaxy-card-summary,
.catalog-card-summary,
.body-card-summary {
  display: block;
  margin-top: 8px;
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.65;
}

.card-footer {
  display: block;
  margin-top: 14px;
  color: var(--soft);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
}

.card-arrow {
  position: absolute;
  top: 20px;
  right: 22px;
  color: rgba(225, 226, 249, 0.73);
  font-size: 1.1rem;
  transition: transform 180ms ease, color 180ms ease;
}

.galaxy-card:hover .card-arrow,
.catalog-card:hover .card-arrow,
.body-card:hover .card-arrow {
  transform: translate(2px, -2px);
  color: var(--gold);
}

.home-footnote {
  margin: 33px 0 40px;
  color: var(--soft);
  font-size: 0.72rem;
  line-height: 1.7;
  text-align: center;
}

.loading-message,
.error-message {
  grid-column: 1 / -1;
  margin: 16px 0;
  color: var(--muted);
}

.error-message {
  color: #f0aaa7;
}

.explorer-main {
  padding-top: 29px;
  padding-bottom: 72px;
}

.breadcrumbs {
  margin-bottom: 31px;
}

.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.breadcrumbs li {
  color: var(--soft);
  font-size: 0.78rem;
}

.breadcrumbs li + li::before {
  margin-right: 8px;
  color: #555d78;
  content: "/";
}

.breadcrumbs a {
  color: var(--muted);
  text-decoration: none;
}

.breadcrumb-current {
  color: var(--text);
}

.galaxy-overview {
  position: relative;
  display: grid;
  min-height: 320px;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.08fr);
  align-items: center;
  gap: 34px;
  overflow: hidden;
  padding: 32px 38px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: linear-gradient(110deg, rgba(16, 22, 41, 0.97), rgba(13, 17, 33, 0.77));
}

.galaxy-artwork {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  opacity: 0.78;
  mask-image: linear-gradient(90deg, black 0%, black 47%, transparent 75%);
}

.galaxy-artwork::before {
  top: -8%;
  right: 5%;
  width: 52%;
  height: 115%;
}

.galaxy-overview-copy {
  position: relative;
  z-index: 1;
  grid-column: 2;
  max-width: 560px;
}

.page-title {
  font-size: clamp(2rem, 4.4vw, 3rem);
  line-height: 1.35;
}

.page-intro {
  max-width: 680px;
  margin: 14px 0 0;
  font-size: 0.93rem;
}

.distance-note {
  display: inline-flex;
  flex-direction: column;
  gap: 5px;
  margin: 22px 0 0;
  padding: 10px 15px;
  border-left: 1px solid rgba(242, 210, 154, 0.66);
  background: rgba(255, 255, 255, 0.025);
}

.distance-note span {
  color: var(--soft);
  font-size: 0.68rem;
}

.distance-note strong {
  color: var(--gold);
  font-size: 0.84rem;
  font-weight: 500;
}

.catalog-section {
  margin-top: 43px;
}

.exploration-map-section {
  margin: 30px 0 42px;
}

.exploration-map-section .section-heading {
  margin-bottom: 15px;
}

.map-console-galaxy .interactive-map {
  min-height: 440px;
}

.map-console-catalog .interactive-map {
  min-height: 420px;
}

.map-console-catalog.is-dense .interactive-map {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
  align-content: center;
  gap: 12px 8px;
  min-height: 0;
  padding: 28px 18px;
}

.map-console-catalog.is-dense .map-node {
  position: relative;
  top: auto;
  left: auto;
  display: flex;
  min-width: 0;
  min-height: 68px;
  flex-direction: column;
  gap: 7px;
  transform: none;
}

.map-console-catalog.is-dense .map-node-label {
  position: static;
  min-width: 0;
  max-width: 100%;
  padding: 0;
  transform: none;
  border: 0;
  background: transparent;
  text-align: center;
}

.map-console-catalog.is-dense .map-node-label small {
  display: none;
}

.catalog-card {
  min-height: 208px;
  align-items: end;
  padding: 23px 24px;
}

.catalog-card-content {
  position: relative;
  z-index: 1;
}

.catalog-art {
  position: absolute;
  z-index: -1;
  top: 0;
  right: 0;
  width: 56%;
  height: 100%;
  opacity: 0.7;
  background: radial-gradient(ellipse at 70% 20%, rgba(135, 115, 224, 0.19), transparent 67%);
}

.catalog-art::before,
.body-card-art::before,
.detail-art::before {
  position: absolute;
  top: 18%;
  right: 12%;
  width: 94px;
  aspect-ratio: 1;
  content: "";
  border: 1px solid rgba(209, 213, 244, 0.28);
  border-radius: 50%;
  background: radial-gradient(circle at 34% 30%, #e8e5fd, #8584b5 16%, #333b65 55%, #12172d 76%);
  box-shadow: 0 0 45px rgba(138, 126, 220, 0.18);
}

.catalog-art[data-visual="solar-system"]::before {
  top: 24%;
  right: 11%;
  width: 82px;
  background: radial-gradient(circle at 34% 30%, #fff0bd, #f8b96d 35%, #9d5b72 72%, #332d55);
  box-shadow: 0 0 40px rgba(242, 177, 115, 0.23);
}

.catalog-art[data-visual="nebula"]::before {
  width: 145px;
  height: 86px;
  border: 0;
  border-radius: 50%;
  background:
    radial-gradient(ellipse at 34% 49%, rgba(255, 195, 184, 0.84), transparent 29%),
    radial-gradient(ellipse at 62% 40%, rgba(157, 125, 221, 0.8), transparent 42%),
    radial-gradient(ellipse at 55% 60%, rgba(66, 157, 188, 0.55), transparent 55%);
  filter: blur(5px);
}

.catalog-art[data-visual="stars"]::before,
.catalog-art[data-visual="clusters"]::before {
  border: 0;
  background:
    radial-gradient(2px 2px at 20% 28%, #fff 60%, transparent),
    radial-gradient(3px 3px at 62% 43%, #f8dbbd 60%, transparent),
    radial-gradient(2px 2px at 83% 19%, #d3deff 60%, transparent),
    radial-gradient(2px 2px at 43% 79%, #fff 60%, transparent),
    radial-gradient(1.5px 1.5px at 74% 77%, #d3deff 60%, transparent);
  box-shadow: 0 0 45px rgba(185, 176, 255, 0.18);
}

.catalog-art[data-visual="black-hole"]::before {
  width: 104px;
  border: 0;
  background:
    radial-gradient(ellipse at center, #05050c 27%, transparent 30%),
    conic-gradient(from 25deg, transparent, rgba(244, 180, 121, 0.85), rgba(160, 115, 232, 0.58), transparent 66%);
  filter: drop-shadow(0 0 22px rgba(197, 138, 229, 0.25));
}

.catalog-art[data-visual="dwarf-planets"]::before {
  width: 108px;
  background:
    radial-gradient(circle at 30% 31%, #f1e7d4, #c99f8c 34%, #64556b 68%, #25243d);
  box-shadow: 0 0 40px rgba(196, 160, 194, 0.22);
}

.catalog-art[data-visual="exoplanets"]::before {
  width: 138px;
  height: 110px;
  border: 0;
  background:
    radial-gradient(circle at 50% 50%, #fff0c1 0 6%, rgba(245, 181, 111, 0.8) 7% 9%, transparent 10%),
    radial-gradient(ellipse at 50% 50%, transparent 24%, rgba(144, 185, 231, 0.5) 25% 26%, transparent 27%),
    radial-gradient(ellipse at 50% 50%, transparent 41%, rgba(177, 154, 240, 0.4) 42% 43%, transparent 44%);
  box-shadow: none;
}

.body-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.body-card {
  min-height: 122px;
  align-items: center;
  gap: 15px;
  padding: 17px;
}

.body-card-art {
  position: relative;
  display: grid;
  width: 64px;
  min-width: 64px;
  height: 64px;
  place-items: center;
  overflow: hidden;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(110, 108, 167, 0.12), transparent 70%);
}

.body-card-art::before {
  top: 50%;
  right: auto;
  width: 42px;
  transform: translateY(-50%);
}

.body-card-content {
  display: block;
  min-width: 0;
}

.body-card-title {
  margin-top: 4px;
  font-size: 1.1rem;
}

.body-card-summary {
  display: -webkit-box;
  overflow: hidden;
  margin-top: 5px;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.body-card .card-arrow {
  top: 13px;
  right: 14px;
  font-size: 0.9rem;
}

.empty-state,
.error-state {
  padding: 52px 24px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--surface);
  text-align: center;
}

.empty-orbit {
  display: inline-block;
  margin-bottom: 13px;
  color: var(--violet);
  font-size: 2.4rem;
}

.empty-state h2,
.error-state h1 {
  margin: 0;
  font-family: var(--serif);
  font-size: 1.5rem;
  font-weight: 400;
}

.empty-state p,
.error-state > p:not(.eyebrow) {
  max-width: 520px;
  margin: 12px auto 0;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.8;
}

.explorer-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 26px;
}

.explorer-heading .eyebrow {
  margin-bottom: 9px;
}

.explorer-heading .page-intro {
  max-width: 730px;
}

.back-link {
  display: inline-flex;
  flex-shrink: 0;
  align-items: center;
  gap: 7px;
  padding: 9px 13px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.78rem;
  text-decoration: none;
  transition: border-color 180ms ease, color 180ms ease;
}

.back-link:hover {
  border-color: rgba(146, 220, 233, 0.48);
  color: var(--cyan);
}

.body-detail {
  display: grid;
  grid-template-columns: minmax(220px, 0.7fr) minmax(0, 1.3fr);
  align-items: center;
  gap: 38px;
  margin-top: 34px;
  padding: 32px;
  border: 1px solid var(--border);
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(20, 27, 48, 0.84), rgba(12, 17, 32, 0.86));
}

.detail-art {
  position: relative;
  display: grid;
  min-height: 250px;
  place-items: center;
  overflow: hidden;
  border-radius: 14px;
  background:
    radial-gradient(ellipse at center, rgba(106, 108, 179, 0.15), transparent 62%),
    radial-gradient(1px 1px at 26% 25%, #dce8ff 55%, transparent),
    radial-gradient(1px 1px at 76% 68%, #dce8ff 55%, transparent);
}

.detail-art::before {
  top: 50%;
  right: auto;
  width: 148px;
  transform: translateY(-50%);
}

.detail-art[data-visual="sun"]::before,
.body-card-art[data-visual="sun"]::before {
  border: 0;
  background: radial-gradient(circle at 35% 33%, #fff6cf 0%, #ffd27b 30%, #ef885d 64%, #84384e 100%);
  box-shadow: 0 0 68px rgba(245, 160, 93, 0.43);
}

.detail-art[data-visual="mercury"]::before,
.body-card-art[data-visual="mercury"]::before {
  background: radial-gradient(circle at 34% 29%, #d8d1c7, #8b8b92 32%, #434758 73%, #1a2036);
}

.detail-art[data-visual="venus"]::before,
.body-card-art[data-visual="venus"]::before {
  background: radial-gradient(circle at 32% 27%, #ffebbf, #d89c64 39%, #8c4f54 76%, #35243e);
  box-shadow: 0 0 37px rgba(225, 152, 100, 0.22);
}

.detail-art[data-visual="earth"]::before,
.body-card-art[data-visual="earth"]::before {
  background:
    radial-gradient(ellipse at 56% 45%, transparent 0 24%, rgba(114, 166, 112, 0.9) 26% 34%, transparent 36%),
    radial-gradient(circle at 34% 28%, #b6ecff, #398bc5 38%, #174677 72%, #10172f);
  box-shadow: 0 0 46px rgba(68, 160, 222, 0.35);
}

.detail-art[data-visual="mars"]::before,
.body-card-art[data-visual="mars"]::before {
  background: radial-gradient(circle at 34% 30%, #ffc18d, #d16647 38%, #813d3d 72%, #2b263c);
}

.detail-art[data-visual="jupiter"]::before,
.body-card-art[data-visual="jupiter"]::before {
  background:
    radial-gradient(ellipse at 68% 58%, #9f4937 0 6%, transparent 7%),
    repeating-linear-gradient(0deg, #d9b78c 0 11%, #9d6d5f 13% 19%, #e2c99e 21% 30%, #746477 31% 34%);
}

.detail-art[data-visual="saturn"]::before,
.body-card-art[data-visual="saturn"]::before {
  border: 9px solid rgba(226, 198, 149, 0.6);
  background: repeating-linear-gradient(0deg, #c5a77c 0 14%, #a87963 17% 26%, #e3cda9 28% 40%);
  box-shadow: 0 0 0 4px rgba(186, 152, 116, 0.15), 0 0 32px rgba(230, 193, 137, 0.17);
}

.detail-art[data-visual="uranus"]::before,
.body-card-art[data-visual="uranus"]::before {
  background: radial-gradient(circle at 34% 28%, #d4fffc, #6bbac4 38%, #3b7d94 73%, #1a2c4b);
}

.detail-art[data-visual="neptune"]::before,
.body-card-art[data-visual="neptune"]::before {
  background:
    radial-gradient(ellipse at 62% 62%, #183f8e 0 8%, transparent 12%),
    radial-gradient(circle at 35% 29%, #9bbdff, #3e6ddd 42%, #1b367f 76%, #141b48);
}

.detail-art[data-visual="black-hole"]::before,
.body-card-art[data-visual="black-hole"]::before {
  border: 0;
  background:
    radial-gradient(ellipse at center, #03040a 23%, transparent 26%),
    conic-gradient(from 60deg, transparent, #efd29d, #9377d9, transparent 69%);
  box-shadow: 0 0 50px rgba(182, 136, 227, 0.24);
}

.detail-art[data-visual="orion"]::before,
.body-card-art[data-visual="orion"]::before {
  width: 180px;
  height: 125px;
  border: 0;
  border-radius: 46%;
  background:
    radial-gradient(ellipse at 40% 47%, rgba(244, 199, 183, 0.93), transparent 29%),
    radial-gradient(ellipse at 65% 40%, rgba(161, 133, 225, 0.83), transparent 46%),
    radial-gradient(ellipse at 48% 64%, rgba(83, 169, 190, 0.55), transparent 57%);
  filter: blur(7px);
}

.detail-art[data-visual="pleiades"]::before,
.body-card-art[data-visual="pleiades"]::before {
  border: 0;
  background:
    radial-gradient(2px 2px at 24% 26%, #fff 60%, transparent),
    radial-gradient(3px 3px at 66% 40%, #fff1d2 60%, transparent),
    radial-gradient(2px 2px at 78% 72%, #d7ddff 60%, transparent),
    radial-gradient(1.5px 1.5px at 39% 78%, #fff 60%, transparent),
    radial-gradient(2px 2px at 55% 15%, #d7ddff 60%, transparent),
    radial-gradient(circle, rgba(151, 142, 227, 0.22), transparent 68%);
  box-shadow: none;
}

.detail-art[data-visual="proxima"]::before,
.body-card-art[data-visual="proxima"]::before {
  background: radial-gradient(circle at 35% 28%, #ffdfb4, #d76d52 44%, #743554 78%, #241e3e);
  box-shadow: 0 0 38px rgba(219, 119, 89, 0.23);
}

.detail-art[data-visual="ceres"]::before,
.body-card-art[data-visual="ceres"]::before {
  background: radial-gradient(circle at 31% 29%, #e8dfd3, #a89d92 42%, #555363 76%, #28273b);
}

.detail-art[data-visual="pluto"]::before,
.body-card-art[data-visual="pluto"]::before {
  background:
    radial-gradient(ellipse at 58% 47%, rgba(243, 211, 176, 0.92) 0 21%, transparent 23%),
    radial-gradient(circle at 34% 29%, #e5c4a4, #b47d72 43%, #65506a 76%, #27263d);
}

.detail-art[data-visual="haumea"]::before,
.body-card-art[data-visual="haumea"]::before {
  width: 170px;
  height: 100px;
  border-radius: 50%;
  transform: translateY(-50%) rotate(-24deg);
  background: radial-gradient(ellipse, #f3eadc 0%, #c5b9b1 41%, #716b83 76%, #292b46);
}

.detail-art[data-visual="makemake"]::before,
.body-card-art[data-visual="makemake"]::before {
  background: radial-gradient(circle at 33% 29%, #e8c3a1, #a86e67 42%, #61415f 75%, #28243e);
}

.detail-art[data-visual="eris"]::before,
.body-card-art[data-visual="eris"]::before {
  background: radial-gradient(circle at 33% 29%, #f2efeb, #aaaab5 42%, #62657d 75%, #282b43);
}

.detail-art[data-visual="exoplanet-rocky"]::before,
.body-card-art[data-visual="exoplanet-rocky"]::before {
  background: radial-gradient(circle at 32% 28%, #f0c49d, #b77975 40%, #59446f 74%, #20223d);
  box-shadow: 0 0 40px rgba(183, 121, 169, 0.2);
}

.detail-art[data-visual="sirius"]::before {
  background: radial-gradient(circle at 38% 30%, #fff, #b5d5ff 50%, #6477c5 100%);
  box-shadow: 0 0 60px rgba(174, 202, 255, 0.45);
}

.body-detail-copy h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: 2rem;
  font-weight: 400;
}

.body-detail-copy .eyebrow {
  margin-bottom: 8px;
}

.detail-description {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.9;
}

.facts-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin: 14px 0 0;
}

.fact-item {
  min-width: 0;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: rgba(16, 22, 40, 0.76);
}

.fact-item dt {
  margin-bottom: 7px;
  color: var(--soft);
  font-size: 0.72rem;
}

.fact-item dd {
  margin: 0;
  color: #e8e9f4;
  font-size: 0.83rem;
  line-height: 1.65;
  overflow-wrap: anywhere;
}

.knowledge-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
  gap: 12px;
  margin-top: 13px;
}

.knowledge-section {
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: 13px;
  background: var(--surface);
}

.knowledge-heading {
  display: flex;
  align-items: center;
  gap: 10px;
}

.knowledge-heading h2 {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 500;
}

.knowledge-label {
  padding: 4px 8px;
  border: 1px solid rgba(146, 220, 233, 0.24);
  border-radius: 999px;
  color: var(--cyan);
  font-size: 0.64rem;
  white-space: nowrap;
}

.knowledge-label.unknown {
  border-color: rgba(242, 210, 154, 0.24);
  color: var(--gold);
}

.knowledge-label.inferred {
  border-color: rgba(169, 154, 255, 0.3);
  color: var(--violet);
}

.knowledge-label.fun-fact {
  border-color: rgba(242, 210, 154, 0.24);
  color: var(--gold);
}

.knowledge-list {
  display: grid;
  gap: 8px;
  margin: 13px 0 0;
  padding-left: 18px;
  color: var(--muted);
  font-size: 0.81rem;
  line-height: 1.75;
}

.knowledge-list li::marker {
  color: var(--violet);
}

.source-note {
  margin: 21px 0 0;
  color: var(--soft);
  font-size: 0.74rem;
  line-height: 1.8;
}

.source-link {
  color: var(--cyan);
  text-decoration-color: rgba(146, 220, 233, 0.35);
  text-underline-offset: 3px;
}

.source-link:hover {
  text-decoration-color: currentColor;
}

.error-state {
  max-width: 620px;
  margin: 48px auto;
}

.error-state .eyebrow {
  justify-content: center;
}

.button-link {
  display: inline-flex;
  margin-top: 22px;
  padding: 10px 16px;
  border: 1px solid rgba(146, 220, 233, 0.3);
  border-radius: 999px;
  color: var(--cyan);
  font-size: 0.82rem;
  text-decoration: none;
}

.button-link:hover {
  background: rgba(146, 220, 233, 0.08);
}

@media (max-width: 820px) {
  .site-header,
  .home-main,
  .explorer-main {
    width: min(100% - 40px, 680px);
  }

  .home-hero {
    min-height: 300px;
  }

  .galaxy-card {
    min-height: 225px;
    padding: 22px;
  }

  .galaxy-card-content {
    max-width: 86%;
  }

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

  .map-layout {
    grid-template-columns: 1fr;
  }

  .map-focus {
    min-height: 0;
  }

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

  .galaxy-overview {
    min-height: 290px;
    padding: 28px;
  }

  .body-detail {
    grid-template-columns: minmax(180px, 0.75fr) minmax(0, 1.25fr);
    gap: 24px;
    padding: 24px;
  }

  .detail-art {
    min-height: 215px;
  }

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

@media (max-width: 560px) {
  .site-header,
  .home-main,
  .explorer-main {
    width: calc(100% - 32px);
  }

  .site-header {
    min-height: 65px;
  }

  .brand {
    gap: 8px;
    font-size: 0.83rem;
  }

  .header-note {
    max-width: 48%;
    font-size: 0.68rem;
    text-align: right;
  }

  .header-return {
    font-size: 0.72rem;
  }

  .home-hero {
    min-height: 270px;
    padding: 50px 0 39px;
  }

  .home-hero h1 {
    font-size: clamp(2.05rem, 10vw, 3rem);
  }

  .hero-copy {
    max-width: 360px;
    font-size: 0.88rem;
  }

  .section-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }

  .section-hint {
    font-size: 0.75rem;
  }

  .galaxy-grid,
  .catalog-grid,
  .body-grid {
    grid-template-columns: 1fr;
  }

  .interactive-map,
  .map-console-galaxy .interactive-map,
  .map-console-catalog .interactive-map {
    min-height: 350px;
  }

  .map-console-solar-system .interactive-map {
    min-height: 390px;
  }

  .map-node-label {
    padding: 3px 5px;
    font-size: 0.6rem;
  }

  .map-node-label small {
    font-size: 0.52rem;
  }

  .map-console-catalog.is-dense .interactive-map {
    grid-template-columns: repeat(auto-fit, minmax(78px, 1fr));
    gap: 10px 5px;
    padding: 22px 10px;
  }

  .map-console-catalog.is-dense .map-node {
    min-height: 62px;
  }

  .galaxy-card {
    min-height: 202px;
    padding: 21px;
  }

  .galaxy-card-title,
  .catalog-card-title {
    font-size: 1.28rem;
  }

  .catalog-card {
    min-height: 180px;
  }

  .explorer-main {
    padding-top: 22px;
  }

  .breadcrumbs {
    margin-bottom: 23px;
  }

  .breadcrumbs li {
    font-size: 0.7rem;
  }

  .galaxy-overview {
    min-height: 380px;
    grid-template-columns: 1fr;
    align-content: end;
    padding: 24px 21px;
  }

  .galaxy-artwork {
    mask-image: linear-gradient(180deg, black 0%, transparent 78%);
  }

  .galaxy-artwork::before {
    top: -17%;
    right: -5%;
    width: 84%;
    height: 90%;
  }

  .galaxy-overview-copy {
    grid-column: 1;
    align-self: end;
  }

  .page-title {
    font-size: 2rem;
  }

  .page-intro {
    font-size: 0.84rem;
  }

  .explorer-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 16px;
  }

  .explorer-heading .back-link {
    order: 2;
  }

  .body-card {
    min-height: 110px;
  }

  .body-detail {
    grid-template-columns: 1fr;
    gap: 20px;
    margin-top: 22px;
    padding: 16px;
  }

  .detail-art {
    min-height: 205px;
  }

  .body-detail-copy h2 {
    font-size: 1.7rem;
  }

  .facts-grid {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }

  .fact-item {
    padding: 13px 11px;
  }

  .fact-item dt {
    font-size: 0.68rem;
  }

  .fact-item dd {
    font-size: 0.78rem;
  }

  .knowledge-section {
    padding: 16px;
  }
}

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