:root {
  color-scheme: light;
  --paper: #faf8f1;
  --paper-2: #f1f6ee;
  --ink: #26312b;
  --muted: #66716b;
  --line: #d8dfd5;
  --accent: #2f7c75;
  --accent-2: #c96f4a;
  --accent-3: #4d6fa8;
  --sun: #f3bd55;
  --rose: #d68b86;
  --white: #ffffff;
  --shadow: 0 18px 55px rgba(75, 82, 70, 0.13);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 10% 0%, rgba(243, 189, 85, 0.15), transparent 28rem),
    linear-gradient(180deg, #fbfaf4 0%, #f5f7f0 46%, #fbfaf4 100%);
  color: var(--ink);
}

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

button,
input,
select {
  font: inherit;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(216, 223, 213, 0.75);
  background: rgba(250, 248, 241, 0.9);
  backdrop-filter: blur(18px);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: min(1180px, calc(100% - 2rem));
  min-height: 66px;
  margin: 0 auto;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-weight: 760;
  letter-spacing: 0;
}

.brand-mark {
  width: 1.25rem;
  height: 1.25rem;
  border: 2px solid var(--accent);
  border-radius: 50%;
  box-shadow:
    0 0 0 0.33rem rgba(47, 124, 117, 0.12),
    inset 0.34rem -0.12rem 0 var(--sun);
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.35rem;
}

.nav-links a {
  padding: 0.55rem 0.75rem;
  border-radius: 999px;
  color: var(--muted);
}

.nav-links a:hover {
  background: rgba(47, 124, 117, 0.08);
  color: var(--ink);
}

main {
  overflow: hidden;
}

.intro-band,
.control-band,
.distance-band,
.surface-band,
.earth-band,
.sources-band {
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
}

.intro-band {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(21rem, 34rem);
  gap: clamp(1.5rem, 5vw, 4rem);
  align-items: center;
  min-height: calc(100vh - 66px);
  padding: clamp(2rem, 7vw, 5.5rem) 0 3rem;
}

.intro-copy {
  max-width: 45rem;
}

.eyebrow {
  margin: 0 0 0.85rem;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 760;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  letter-spacing: 0;
}

h1 {
  max-width: 13ch;
  font-size: clamp(3rem, 8vw, 6.8rem);
  line-height: 0.95;
}

h2 {
  font-size: clamp(2rem, 4.5vw, 4rem);
  line-height: 1;
}

h3 {
  font-size: 1.08rem;
  line-height: 1.2;
}

.lede {
  max-width: 42rem;
  margin: 1.35rem 0 1.6rem;
  color: #4f5d56;
  font-size: clamp(1.02rem, 2vw, 1.25rem);
  line-height: 1.75;
}

.search-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 0.75rem;
  max-width: 48rem;
}

.search-row input,
.catalog-meta select {
  min-height: 3rem;
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  background: rgba(255, 255, 255, 0.82);
  color: var(--ink);
  box-shadow: 0 8px 24px rgba(75, 82, 70, 0.06);
}

.search-row input {
  width: 100%;
  padding: 0 1rem;
}

.search-row button,
.chip,
.mission-card button,
.dialog-links a {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--white);
  color: var(--ink);
  cursor: pointer;
}

.search-row button {
  padding: 0 1rem;
}

.search-row button:hover,
.chip:hover,
.mission-card button:hover,
.dialog-links a:hover {
  border-color: rgba(47, 124, 117, 0.4);
  background: rgba(47, 124, 117, 0.08);
}

.portrait-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  min-height: 31rem;
  align-items: stretch;
}

.portrait-tile {
  position: relative;
  overflow: hidden;
  min-height: 9rem;
  border-radius: 0.5rem;
  background: linear-gradient(135deg, rgba(77, 111, 168, 0.15), rgba(201, 111, 74, 0.14));
  box-shadow: var(--shadow);
}

.portrait-tile:nth-child(2),
.portrait-tile:nth-child(5) {
  transform: translateY(2rem);
}

.portrait-tile:nth-child(3n) {
  transform: translateY(-1rem);
}

.portrait-tile img,
.mission-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.portrait-tile::after {
  content: attr(data-label);
  position: absolute;
  left: 0.55rem;
  right: 0.55rem;
  bottom: 0.55rem;
  padding: 0.35rem 0.5rem;
  border-radius: 999px;
  background: rgba(250, 248, 241, 0.84);
  color: #25312a;
  font-size: 0.72rem;
  font-weight: 760;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.metrics-band {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  border-block: 1px solid var(--line);
  background: var(--line);
}

.metric {
  padding: clamp(1rem, 3vw, 1.75rem);
  background: rgba(255, 255, 255, 0.62);
}

.metric span {
  display: block;
  color: var(--accent-2);
  font-size: clamp(2rem, 5vw, 4.25rem);
  font-weight: 820;
  line-height: 1;
}

.metric small {
  display: block;
  margin-top: 0.35rem;
  color: var(--muted);
}

.control-band,
.distance-band,
.surface-band,
.earth-band,
.sources-band {
  padding: clamp(3rem, 8vw, 6rem) 0;
  scroll-margin-top: 5.5rem;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.4rem;
}

.section-note {
  max-width: 24rem;
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.5;
  text-align: right;
}

.distance-layout {
  display: grid;
  grid-template-columns: minmax(17rem, 0.34fr) minmax(0, 1fr);
  gap: clamp(1rem, 4vw, 2rem);
  align-items: stretch;
  padding: clamp(1rem, 3vw, 1.5rem);
  border-block: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.58);
}

.distance-copy p {
  margin: 0 0 1rem;
  color: #516058;
  line-height: 1.75;
}

.distance-highlights {
  display: grid;
  gap: 0.65rem;
}

.distance-highlights div {
  padding: 0.75rem 0;
  border-top: 1px solid var(--line);
}

.distance-highlights span,
.distance-highlights small {
  display: block;
  color: var(--muted);
  font-size: 0.82rem;
}

.distance-highlights strong {
  display: block;
  margin: 0.18rem 0;
  color: var(--accent-2);
  font-size: 1.08rem;
  line-height: 1.25;
}

.cosmic-map {
  position: relative;
  min-height: 31rem;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  background:
    linear-gradient(90deg, rgba(47, 124, 117, 0.08), transparent 27%),
    repeating-linear-gradient(0deg, transparent, transparent 4.85rem, rgba(216, 223, 213, 0.45) 4.9rem),
    rgba(250, 248, 241, 0.78);
}

.map-axis {
  position: absolute;
  left: 4%;
  right: 4%;
  top: 50%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-3), var(--accent-2));
  opacity: 0.4;
}

.map-tick {
  position: absolute;
  top: 0.7rem;
  bottom: 1rem;
  width: 1px;
  color: var(--muted);
  font-size: 0.72rem;
}

.map-tick i {
  position: absolute;
  inset: 1.35rem 0 1.2rem;
  border-left: 1px dashed rgba(102, 113, 107, 0.28);
}

.map-tick b {
  position: absolute;
  left: 0.35rem;
  top: 0;
  min-width: 4.5rem;
  font-weight: 680;
  line-height: 1.25;
}

.map-tick.is-edge b {
  right: 0.35rem;
  left: auto;
  text-align: right;
}

.map-lane {
  position: absolute;
  left: 0.75rem;
  padding: 0.18rem 0.4rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.74);
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 720;
  transform: translateY(-50%);
}

.map-marker {
  position: absolute;
  width: 0.8rem;
  height: 0.8rem;
  padding: 0;
  border: 2px solid rgba(255, 255, 255, 0.92);
  border-radius: 50%;
  background: var(--accent-3);
  box-shadow: 0 0 0 1px rgba(77, 111, 168, 0.45), 0 4px 12px rgba(75, 82, 70, 0.18);
  cursor: pointer;
  scroll-margin-top: 5.5rem;
  transform: translate(-50%, -50%);
}

.map-marker.is-major {
  width: 1rem;
  height: 1rem;
}

.map-marker.active,
.map-marker.extended,
.map-marker.en-route {
  background: var(--accent);
  box-shadow: 0 0 0 1px rgba(47, 124, 117, 0.5), 0 4px 12px rgba(75, 82, 70, 0.18);
}

.map-marker.returned {
  background: var(--sun);
}

.map-marker.defunct,
.map-marker.crashed {
  background: var(--accent-2);
}

.map-marker:hover,
.map-marker:focus-visible {
  z-index: 3;
  outline: 2px solid rgba(38, 49, 43, 0.28);
  outline-offset: 3px;
}

.map-empty {
  display: grid;
  min-height: 31rem;
  place-items: center;
  color: var(--muted);
}

.filters {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.25rem;
  padding: 1rem 0 1.25rem;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.filter-label {
  display: block;
  margin-bottom: 0.55rem;
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 760;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.chip {
  min-height: 2.25rem;
  padding: 0 0.8rem;
  color: #4f5d56;
  font-size: 0.9rem;
}

.chip.is-active {
  border-color: var(--accent);
  background: #dcece5;
  color: #183d38;
}

.catalog-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
  color: var(--muted);
}

.catalog-meta select {
  padding: 0 0.8rem;
}

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

.mission-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-height: 31rem;
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  background: rgba(255, 255, 255, 0.74);
  box-shadow: 0 16px 45px rgba(75, 82, 70, 0.08);
}

.mission-media {
  position: relative;
  height: 12.5rem;
  background:
    linear-gradient(135deg, rgba(243, 189, 85, 0.2), rgba(77, 111, 168, 0.18)),
    var(--paper-2);
}

.mission-media .fallback-title {
  position: absolute;
  inset: auto 1rem 1rem;
  color: rgba(38, 49, 43, 0.68);
  font-size: 0.95rem;
  font-weight: 760;
}

.mission-content {
  display: flex;
  flex: 1;
  flex-direction: column;
  gap: 0.75rem;
  padding: 1rem;
}

.mission-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  color: var(--muted);
  font-size: 0.82rem;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  min-height: 1.7rem;
  padding: 0 0.55rem;
  border-radius: 999px;
  background: rgba(77, 111, 168, 0.12);
  color: #30496d;
  white-space: nowrap;
}

.status-pill.active,
.status-pill.extended,
.status-pill.en-route {
  background: rgba(47, 124, 117, 0.13);
  color: #1e5b55;
}

.status-pill.defunct,
.status-pill.crashed {
  background: rgba(201, 111, 74, 0.13);
  color: #7a3d27;
}

.mission-card p {
  margin: 0;
  color: #516058;
  line-height: 1.62;
}

.distance-badge {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.55rem;
  padding: 0.65rem 0.75rem;
  border: 1px solid rgba(47, 124, 117, 0.18);
  border-radius: 0.5rem;
  background: rgba(241, 246, 238, 0.78);
}

.distance-badge span,
.distance-badge small {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 680;
  white-space: nowrap;
}

.distance-badge strong {
  min-width: 0;
  color: #183d38;
  font-size: 0.92rem;
  overflow-wrap: anywhere;
}

.mission-facts {
  display: grid;
  gap: 0.35rem;
  margin-top: auto;
  padding-top: 0.5rem;
  color: var(--muted);
  font-size: 0.88rem;
}

.mission-facts span {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 1px dashed rgba(216, 223, 213, 0.9);
  padding-bottom: 0.35rem;
}

.mission-facts strong {
  color: var(--ink);
  font-weight: 720;
  text-align: right;
}

.mission-card button {
  width: fit-content;
  min-height: 2.35rem;
  margin-top: 0.25rem;
  padding: 0 0.9rem;
}

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

.body-lane {
  padding: 1.1rem;
  border-left: 5px solid var(--accent);
  background: rgba(255, 255, 255, 0.68);
  box-shadow: 0 12px 36px rgba(75, 82, 70, 0.07);
}

.body-lane:nth-child(2n) {
  border-left-color: var(--accent-2);
}

.body-lane:nth-child(3n) {
  border-left-color: var(--accent-3);
}

.body-lane h3 {
  margin-bottom: 0.45rem;
}

.body-lane p {
  margin: 0 0 0.85rem;
  color: var(--muted);
  line-height: 1.6;
}

.body-lane ol {
  display: grid;
  gap: 0.5rem;
  margin: 0;
  padding-left: 1.2rem;
}

.body-lane li {
  line-height: 1.45;
}

.earth-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(18rem, 30rem);
  gap: clamp(1rem, 5vw, 4rem);
  align-items: center;
  padding: clamp(1.2rem, 4vw, 2.5rem);
  border-block: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.58);
}

.earth-copy p {
  max-width: 46rem;
  margin: 0 0 1.25rem;
  color: #516058;
  font-size: 1.05rem;
  line-height: 1.75;
}

.earth-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.earth-stats span {
  padding: 0.8rem 0;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.earth-stats strong {
  display: block;
  color: var(--accent-2);
  font-size: 1.55rem;
}

.orbit-ring {
  position: relative;
  width: min(100%, 28rem);
  aspect-ratio: 1;
  margin: 0 auto;
  overflow: hidden;
}

.ring,
.earth-dot {
  position: absolute;
  border-radius: 50%;
}

.ring {
  inset: 10%;
  border: 1px solid rgba(47, 124, 117, 0.25);
}

.ring-a {
  transform: rotate(18deg) scaleX(1.05);
}

.ring-b {
  inset: 20%;
  border-color: rgba(201, 111, 74, 0.25);
  transform: rotate(-32deg) scaleX(1.28);
}

.ring-c {
  inset: 4%;
  border-color: rgba(77, 111, 168, 0.25);
  transform: rotate(58deg) scaleX(0.82);
}

.earth-dot {
  inset: 39%;
  background:
    radial-gradient(circle at 35% 35%, #b8d8bd, #4d9aa0 43%, #4d6fa8 44%, #31588c 100%);
  box-shadow: 0 0 0 0.8rem rgba(77, 111, 168, 0.08);
}

.source-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.source-item {
  display: block;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  background: rgba(255, 255, 255, 0.62);
}

.source-item strong {
  display: block;
  margin-bottom: 0.3rem;
}

.source-item span {
  color: var(--muted);
  line-height: 1.5;
}

.mission-dialog {
  width: min(920px, calc(100% - 2rem));
  max-height: min(840px, calc(100vh - 2rem));
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  background: var(--paper);
  color: var(--ink);
  box-shadow: var(--shadow);
}

.mission-dialog::backdrop {
  background: rgba(38, 49, 43, 0.35);
  backdrop-filter: blur(4px);
}

.dialog-close {
  position: absolute;
  top: 0.7rem;
  right: 0.7rem;
  z-index: 2;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.86);
  cursor: pointer;
  font-size: 1.4rem;
  line-height: 1;
}

.dialog-hero {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
}

.dialog-hero .mission-media {
  height: 100%;
  min-height: 26rem;
}

.dialog-copy {
  padding: clamp(1.25rem, 4vw, 2.4rem);
}

.dialog-copy h2 {
  margin-bottom: 0.65rem;
  font-size: clamp(2rem, 5vw, 3.6rem);
}

.dialog-copy p {
  color: #4f5d56;
  line-height: 1.75;
}

.dialog-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.dialog-links a {
  padding: 0.6rem 0.85rem;
}

.empty-state {
  grid-column: 1 / -1;
  padding: 3rem;
  border: 1px dashed var(--line);
  color: var(--muted);
  text-align: center;
}

@media (max-width: 980px) {
  .intro-band,
  .distance-layout,
  .earth-layout,
  .dialog-hero {
    grid-template-columns: 1fr;
  }

  .intro-band {
    min-height: 0;
  }

  .portrait-grid {
    min-height: 20rem;
  }

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

@media (max-width: 720px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
    padding: 0.8rem 0;
  }

  .nav-links {
    justify-content: flex-start;
  }

  h1 {
    max-width: 11ch;
  }

  .search-row,
  .metrics-band,
  .mission-grid,
  .filters,
  .body-lanes,
  .earth-stats,
  .source-list {
    grid-template-columns: 1fr;
  }

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

  .portrait-tile:nth-child(n) {
    transform: none;
  }

  .section-heading,
  .catalog-meta {
    align-items: flex-start;
    flex-direction: column;
  }

  .section-note {
    text-align: left;
  }

  .cosmic-map {
    min-height: 35rem;
  }

  .map-tick b {
    min-width: 3.5rem;
    max-width: 3.5rem;
    font-size: 0.66rem;
    transform: rotate(-28deg);
    transform-origin: left top;
  }

  .map-tick.is-edge b {
    transform-origin: right top;
  }

  .map-tick.is-minor b {
    display: none;
  }

  .map-tick.is-minor i {
    opacity: 0.55;
  }

  .distance-badge {
    grid-template-columns: 1fr;
    gap: 0.25rem;
  }

  .ring-a {
    transform: rotate(18deg) scaleX(0.96);
  }

  .ring-b {
    transform: rotate(-32deg) scaleX(0.96);
  }

  .ring-c {
    transform: rotate(58deg) scaleX(0.82);
  }

  .dialog-hero .mission-media {
    min-height: 17rem;
  }
}