:root {
  color-scheme: dark;
  --ink: #d8ded8;
  --ink-soft: #a7b0aa;
  --ink-dim: #707975;
  --ground: #060909;
  --ground-raised: #0a0f0f;
  --panel: #0c1212;
  --panel-deep: #080d0d;
  --line: #283030;
  --line-soft: #1a2222;
  --amber: #e7aa4e;
  --amber-soft: #be8741;
  --amber-faint: rgb(231 170 78 / 11%);
  --cyan: #9ddbe0;
  --cyan-soft: #74afb5;
  --cyan-faint: rgb(157 219 224 / 9%);
  --fact: #cbd1ca;
  --fiction: #7d8782;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --page-width: calc(100vw - 2rem);
  --page-max: 120rem;
  --font-mono: "IBM Plex Mono", "Cascadia Mono", "SFMono-Regular", Consolas,
    "Liberation Mono", monospace;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  background: var(--ground);
  scroll-behavior: smooth;
  scroll-padding-top: 4.5rem;
}

body {
  min-width: 20rem;
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background:
    radial-gradient(circle at 80% 4%, rgb(231 170 78 / 4%), transparent 28rem),
    radial-gradient(circle at 14% 96%, rgb(157 219 224 / 3%), transparent 30rem),
    var(--ground);
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  line-height: 1.55;
}

body::before {
  position: fixed;
  z-index: 20;
  inset: 0;
  pointer-events: none;
  content: "";
  opacity: 0.22;
  background-image:
    radial-gradient(circle at 18% 23%, rgb(255 255 255 / 4%) 0 0.04rem, transparent 0.05rem),
    radial-gradient(circle at 72% 68%, rgb(255 255 255 / 3%) 0 0.035rem, transparent 0.045rem);
  background-size: 4.7rem 5.3rem, 6.1rem 4.3rem;
}

a {
  color: inherit;
}

button,
summary {
  font: inherit;
}

button {
  color: inherit;
}

::selection {
  color: var(--ground);
  background: var(--amber);
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.5rem;
  left: 0.5rem;
  padding: 0.55rem 0.8rem;
  border: 1px solid var(--amber);
  color: var(--amber);
  background: var(--ground);
  font-size: 0.75rem;
  transform: translateY(-150%);
}

.skip-link:focus {
  transform: translateY(0);
}

:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 3px;
}

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

.site-header,
main,
.site-footer {
  width: var(--page-width);
  max-width: var(--page-max);
  margin-inline: auto;
}

.site-header {
  position: relative;
  z-index: 10;
  display: grid;
  grid-template-columns: minmax(8.5rem, auto) minmax(0, 1fr) minmax(7.5rem, auto);
  align-items: center;
  min-height: 4.25rem;
  border-block: 1px solid var(--line);
  background: rgb(6 9 9 / 94%);
}

.wordmark {
  display: flex;
  align-items: baseline;
  gap: 0.45rem;
  min-width: 9.5rem;
  color: #f1f1e9;
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-decoration: none;
}

.wordmark__zero {
  color: var(--amber);
  font-size: 1.1rem;
  text-shadow: 0 0 0.65rem rgb(231 170 78 / 25%);
}

.station-status {
  display: grid;
  grid-template-columns: auto minmax(9.5rem, 1.25fr) repeat(2, minmax(10.5rem, 1fr)) minmax(5rem, 0.55fr);
  align-items: center;
  gap: clamp(0.5rem, 1vw, 1rem);
  min-width: 0;
  padding-inline: clamp(0.5rem, 1vw, 1rem);
  font-size: 0.75rem;
  letter-spacing: 0.055em;
}

.status-pair {
  display: grid;
  gap: 0.1rem;
  min-width: 0;
}

.status-label {
  color: var(--ink-dim);
  font-size: 0.75rem;
}

.status-value {
  overflow: hidden;
  color: var(--ink);
  font-size: 0.75rem;
  line-height: 1.3;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.status-pulse {
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 0.55rem rgb(231 170 78 / 50%);
}

.station-clock {
  display: flex;
  justify-content: flex-end;
  gap: 0.55rem;
  min-width: 9.5rem;
  color: var(--ink-soft);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
}

.station-clock span {
  color: var(--ink-dim);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) clamp(9.375rem, 12vw, 11rem);
  min-height: 10rem;
  border-inline: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(110deg, rgb(13 18 18 / 97%), rgb(7 11 11 / 94%));
}

.hero__copy {
  display: grid;
  grid-template-columns: minmax(20rem, 1.45fr) minmax(17rem, 0.8fr);
  grid-template-rows: auto minmax(0, 1fr) auto;
  gap: 0 var(--space-5);
  align-items: center;
  min-width: 0;
  padding: var(--space-4) var(--space-5);
}

.eyebrow {
  grid-column: 1 / -1;
  align-self: start;
  margin: 0;
  color: var(--amber-soft);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
}

.hero h1 {
  grid-row: 2 / 4;
  min-width: 0;
  margin: 0;
  color: #e5e7df;
  font-size: clamp(1.9rem, 2.45vw, 2.375rem);
  font-weight: 400;
  line-height: 1.08;
  letter-spacing: -0.045em;
}

.hero h1 span {
  display: block;
  color: var(--amber);
}

.hero__intro {
  grid-column: 2;
  grid-row: 2;
  align-self: end;
  min-width: 0;
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.8125rem;
  line-height: 1.55;
}

.frequency-nav {
  grid-column: 2;
  grid-row: 3;
  display: flex;
  align-self: end;
  justify-content: flex-start;
  gap: 1.1rem;
  min-width: 0;
  margin-top: var(--space-2);
}

.frequency-nav a {
  display: inline-flex;
  gap: 0.45rem;
  padding-bottom: 0.2rem;
  border-bottom: 1px solid transparent;
  color: var(--ink-soft);
  font-size: 0.75rem;
  letter-spacing: 0.09em;
  text-decoration: none;
}

.frequency-nav a:first-child,
.frequency-nav a[aria-current="true"] {
  border-color: currentColor;
  color: var(--amber);
}

.frequency-nav a:last-child[aria-current="true"] {
  color: var(--cyan);
}

.frequency-nav a span {
  color: var(--ink-dim);
}

.hero__instrument {
  display: grid;
  grid-template-rows: 1fr auto;
  min-height: 10rem;
  border-left: 1px solid var(--line);
  background: var(--panel-deep);
}

.orbital-array {
  position: relative;
  width: 7.5rem;
  height: 7.5rem;
  margin: 0.55rem auto 0;
}

.orbit,
.orbit-axis,
.orbit-object,
.orbit-core {
  position: absolute;
  display: block;
}

.orbit {
  top: 50%;
  left: 50%;
  border: 1px solid rgb(231 170 78 / 26%);
  border-radius: 50%;
  transform: translate(-50%, -50%) rotate(-18deg);
}

.orbit--outer {
  width: 7rem;
  height: 4.5rem;
}

.orbit--middle {
  width: 5.1rem;
  height: 3rem;
  transform: translate(-50%, -50%) rotate(23deg);
}

.orbit--inner {
  width: 3.05rem;
  height: 3.05rem;
}

.orbit-axis {
  top: 50%;
  left: 50%;
  background: rgb(231 170 78 / 12%);
  transform: translate(-50%, -50%);
}

.orbit-axis--x {
  width: 7.5rem;
  height: 1px;
}

.orbit-axis--y {
  width: 1px;
  height: 7.5rem;
}

.orbit-core {
  top: 50%;
  left: 50%;
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 0.8rem rgb(231 170 78 / 55%);
  transform: translate(-50%, -50%);
}

.orbit-object {
  top: 1.75rem;
  right: 1.05rem;
  width: 0.3rem;
  height: 0.3rem;
  border-radius: 50%;
  background: #f6d9a0;
  box-shadow: 0 0 0.5rem rgb(246 217 160 / 65%);
}

.instrument-readout {
  display: flex;
  justify-content: space-between;
  padding: 0.4rem 0.55rem;
  border-top: 1px solid var(--line-soft);
  color: var(--ink-dim);
  font-size: 0.5625rem;
  letter-spacing: 0.04em;
}

.signal-notice {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  min-height: 2.625rem;
  padding-inline: var(--space-4);
  border-inline: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  color: var(--ink-soft);
  background: #090e0e;
  font-size: 0.75rem;
  letter-spacing: 0.035em;
}

.signal-notice p {
  min-width: 0;
  margin: 0 var(--space-4);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.signal-notice__mark {
  color: var(--amber);
  font-weight: 700;
}

.signal-notice__mark::before {
  content: "[ ";
}

.signal-notice__mark::after {
  content: " ]";
}

.signal-notice__code {
  color: var(--ink-dim);
}

.frequency {
  --accent: var(--amber);
  --accent-soft: var(--amber-soft);
  --accent-faint: var(--amber-faint);
  --interpretation: #d4a45f;
  border-inline: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--ground-raised);
}

.frequency--cyan {
  --accent: var(--cyan);
  --accent-soft: var(--cyan-soft);
  --accent-faint: var(--cyan-faint);
  --interpretation: #8fcbd0;
}

.frequency__header {
  display: grid;
  grid-template-columns: 4.75rem minmax(0, 1fr) auto;
  align-items: stretch;
  min-height: 6.25rem;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(90deg, var(--accent-faint), transparent 40%);
}

.frequency__number {
  display: grid;
  place-items: center;
  border-right: 1px solid var(--line);
  color: var(--accent);
  font-size: 2.4rem;
  font-weight: 300;
  line-height: 1;
  letter-spacing: -0.08em;
  text-shadow: 0 0 1.1rem color-mix(in srgb, var(--accent) 20%, transparent);
}

.frequency__identity {
  align-self: center;
  min-width: 0;
  padding: var(--space-3) var(--space-4);
}

.frequency__channel,
.transmission__kind,
.approach-index__channel {
  margin: 0;
  color: var(--accent-soft);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.frequency__header h2 {
  margin: 0.2rem 0 0;
  overflow: hidden;
  color: #e0e4dd;
  font-size: clamp(1.75rem, 2.1vw, 2rem);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.035em;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.frequency__source {
  display: flex;
  align-items: center;
  align-self: center;
  gap: 0;
  margin: 0;
  padding: 0 var(--space-4);
  color: var(--ink-soft);
  font-size: 0.75rem;
  letter-spacing: 0.075em;
  white-space: nowrap;
}

.frequency__source > span + span::before {
  margin-inline: 0.55rem;
  color: var(--line);
  content: "·";
}

.live-tag {
  color: var(--accent);
  font-weight: 700;
}

.signal-index {
  border-bottom: 1px solid var(--line);
  background: var(--panel-deep);
}

.approach-index__header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  min-height: 3.5rem;
  padding: 0.55rem var(--space-4);
  border-bottom: 1px solid var(--line-soft);
}

.approach-index__header h3 {
  margin: 0.12rem 0 0;
  color: var(--ink);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.05em;
}

.approach-index__header > p {
  margin: 0;
  color: var(--ink-dim);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
}

.approach-index__viewport {
  max-width: 100%;
  overflow-x: auto;
  scrollbar-color: var(--accent-soft) var(--panel-deep);
  scrollbar-width: thin;
}

.approach-index table {
  width: 100%;
  min-width: 58rem;
  border-collapse: collapse;
  table-layout: fixed;
}

.approach-index th,
.approach-index td {
  height: 2.3rem;
  padding: 0.3rem var(--space-4);
  overflow: hidden;
  border-right: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  text-align: left;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.approach-index th:last-child,
.approach-index td:last-child {
  border-right: 0;
}

.approach-index th {
  height: 2rem;
  color: var(--ink-dim);
  background: rgb(255 255 255 / 1.4%);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
}

.approach-index td {
  color: var(--ink-soft);
  font-size: 0.875rem;
  font-variant-numeric: tabular-nums;
}

.approach-index tbody tr {
  transition: background-color 140ms ease, box-shadow 140ms ease;
}

.approach-index tbody tr[hidden] {
  display: none;
}

.approach-index tbody tr:hover,
.approach-index tbody tr:focus-within {
  background: var(--accent-faint);
}

.approach-index tbody tr[data-selected="true"] {
  background: var(--accent-faint);
  box-shadow: inset 0.18rem 0 var(--accent);
}

.approach-index__select {
  width: 100%;
  padding: 0;
  overflow: hidden;
  border: 0;
  color: var(--accent);
  background: transparent;
  font-size: inherit;
  text-align: left;
  text-decoration: underline;
  text-decoration-color: transparent;
  text-underline-offset: 0.22rem;
  text-overflow: ellipsis;
  white-space: nowrap;
  cursor: pointer;
}

.approach-index__select:hover,
.approach-index__select:focus-visible,
.approach-index__select[aria-pressed="true"] {
  text-decoration-color: currentColor;
}

.approach-index__time-col {
  width: 19%;
}

.approach-index__object-col {
  width: 21%;
}

.approach-index__distance-col {
  width: 12%;
}

.approach-index__velocity-col {
  width: 12%;
}

.approach-index__diameter-col {
  width: 11%;
}

.approach-index__orbit-col {
  width: 8%;
}

.approach-index__lifecycle-col {
  width: 17%;
}

.lifecycle-badge {
  display: inline-block;
  max-width: 100%;
  overflow: hidden;
  color: var(--ink-dim);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.035em;
  line-height: 1.25;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.lifecycle-badge--upcoming {
  color: var(--cyan);
}

.lifecycle-badge--approach-window {
  color: var(--amber);
}

.lifecycle-badge--passed-pending-confirmation {
  color: var(--amber-soft);
}

.lifecycle-badge--finalized {
  color: var(--ink-dim);
}

.lifecycle-badge--time-model-review-required {
  padding: 0.1rem 0.3rem;
  border: 1px solid var(--amber-soft);
  color: var(--amber);
  background: var(--amber-faint);
}

.approach-index__footer {
  display: flex;
  justify-content: flex-end;
  min-height: 2.3rem;
  padding: 0 var(--space-4);
}

.approach-index__archive {
  align-self: center;
  margin: 0;
  border: 0;
  color: var(--ink-dim);
  background: transparent;
  font-size: 0.625rem;
  letter-spacing: 0.07em;
}

.approach-index__archive:disabled {
  cursor: not-allowed;
  opacity: 0.72;
}

.approach-index__scroll-cue {
  display: none;
  margin: 0;
  padding: 0.35rem var(--space-4);
  color: var(--accent-soft);
  font-size: 0.625rem;
  letter-spacing: 0.08em;
}

.observation-index .approach-index__viewport {
  border-bottom: 0;
}

.frequency__body {
  display: grid;
  grid-template-columns: 34fr 38fr 28fr;
  align-items: stretch;
}

.transmission {
  min-width: 0;
  padding: var(--space-4);
  border-right: 1px solid var(--line);
  background: var(--panel);
}

.transmission:last-child {
  border-right: 0;
}

.transmission--raw {
  background: #0a1010;
}

.transmission--fact {
  background: #0d1212;
}

.transmission--fiction {
  background:
    linear-gradient(145deg, var(--accent-faint), transparent 60%),
    #0b1010;
}

.transmission--fiction .transmission__kind,
.transmission--fiction .transmission__header h3 {
  color: var(--interpretation);
}

.transmission__header {
  display: grid;
  grid-template-columns: 2.5rem minmax(0, 1fr);
  min-height: 3rem;
  margin-bottom: var(--space-3);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--line-soft);
}

.transmission__index {
  margin: 0;
  color: var(--accent-soft);
  font-size: 0.6875rem;
}

.transmission__kind {
  font-size: 0.75rem;
}

.transmission__header h3 {
  margin: 0.08rem 0 0;
  color: var(--ink);
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.2;
}

.observation-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  margin: 0;
}

.observation-grid > div {
  display: grid;
  grid-template-columns: minmax(7.5rem, 0.9fr) minmax(0, 1.1fr);
  gap: var(--space-3);
  align-items: baseline;
  min-height: 2rem;
  padding: 0.32rem 0;
  border-bottom: 1px solid var(--line-soft);
}

.observation-grid > div:last-child {
  border-bottom: 0;
}

.observation-grid dt {
  color: var(--ink-dim);
  font-size: 0.75rem;
}

.observation-grid dd {
  min-width: 0;
  margin: 0;
  overflow-wrap: anywhere;
  color: var(--accent);
  font-size: 0.875rem;
  line-height: 1.35;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.observation-grid dd span {
  color: var(--ink-soft);
  font-size: 0.75rem;
}

.transmission--fact > p {
  margin: 0 0 var(--space-3);
  color: var(--ink-soft);
  font-size: 0.9375rem;
  line-height: 1.58;
}

.transmission--fact .fact-lead {
  color: var(--fact);
  font-size: 1rem;
  line-height: 1.5;
}

.transmission--fact .translation-note {
  margin-top: var(--space-4);
  margin-bottom: 0;
  padding-top: var(--space-2);
  border-top: 1px solid var(--line-soft);
  color: var(--ink-dim);
  font-size: 0.75rem;
}

.transmission--fiction blockquote {
  margin: 0;
  color: var(--interpretation);
  font-size: 1.125rem;
  line-height: 1.58;
  white-space: pre-line;
}

.transmission--fiction > footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-2);
  margin-top: var(--space-5);
  padding-top: var(--space-2);
  border-top: 1px solid var(--line-soft);
  color: var(--ink-dim);
  font-size: 0.75rem;
  letter-spacing: 0.055em;
}

.frequency__provenance {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(16rem, 30%);
  align-items: start;
  border-top: 1px solid var(--line);
  background: var(--panel-deep);
}

.provenance__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1.25rem;
  min-width: 0;
  padding: 0.7rem var(--space-4);
  color: var(--ink-dim);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
}

.provenance__facts strong {
  color: var(--ink-soft);
  font-weight: 400;
}

.snapshot-age {
  color: var(--accent-soft);
}

.machine-payload {
  min-width: 0;
  border-left: 1px solid var(--line);
}

.machine-payload summary {
  display: flex;
  justify-content: space-between;
  min-height: 2.55rem;
  padding: 0.7rem var(--space-4);
  color: var(--accent-soft);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  list-style: none;
  cursor: pointer;
}

.machine-payload summary::-webkit-details-marker {
  display: none;
}

.machine-payload[open] summary {
  border-bottom: 1px solid var(--line);
}

.machine-payload[open] summary span:last-child {
  transform: rotate(45deg);
}

.machine-payload pre {
  max-height: 28rem;
  margin: 0;
  padding: var(--space-4);
  overflow: auto;
  color: var(--ink-soft);
  background: #060a0a;
  font: 0.75rem/1.55 var(--font-mono);
  white-space: pre;
  scrollbar-color: var(--accent-soft) var(--panel-deep);
  scrollbar-width: thin;
}

.site-footer {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  min-height: 5rem;
  padding: var(--space-4);
  border-inline: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  color: var(--ink-dim);
  background: #070b0b;
  font-size: 0.6875rem;
}

.site-footer p {
  margin: 0;
}

.site-footer > div:first-child > span {
  color: var(--ink-soft);
  font-weight: 700;
  letter-spacing: 0.1em;
}

.protocol-key {
  display: flex;
  gap: var(--space-4);
}

.protocol-key span {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.protocol-dot {
  display: block;
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 50%;
  background: var(--ink-dim);
}

.protocol-dot--fact {
  background: var(--fact);
}

.protocol-dot--fiction {
  background: var(--fiction);
}

.site-footer__note {
  justify-self: end;
  text-align: right;
}

@media (min-width: 124rem) {
  .site-header,
  main,
  .site-footer {
    width: calc(100vw - 4rem);
    max-width: none;
  }
}

@media (max-width: 78rem) {
  .site-header {
    grid-template-columns: auto minmax(0, 1fr) auto;
  }

  .station-status {
    grid-column: 1 / -1;
    grid-row: 2;
    grid-template-columns: auto minmax(9.5rem, 1.25fr) repeat(2, minmax(10rem, 1fr)) minmax(5rem, 0.55fr);
    width: 100%;
    padding-block: 0.45rem;
    border-top: 1px solid var(--line-soft);
  }

  .wordmark,
  .station-clock {
    padding-block: 0.55rem;
  }
}

@media (max-width: 68.75rem) {
  .frequency__header {
    grid-template-columns: 4.25rem minmax(0, 1fr);
  }

  .frequency__source {
    grid-column: 2;
    align-self: start;
    padding: 0 var(--space-4) var(--space-3);
  }

  .frequency__number {
    grid-row: 1 / span 2;
  }

  .frequency__body {
    grid-template-columns: 1fr;
  }

  .transmission {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .transmission:last-child {
    border-bottom: 0;
  }

  .frequency__provenance {
    grid-template-columns: 1fr;
  }

  .machine-payload {
    border-top: 1px solid var(--line);
    border-left: 0;
  }
}

@media (max-width: 56.25rem) {
  .hero {
    grid-template-columns: minmax(0, 1fr) 9.375rem;
    min-height: 12.5rem;
  }

  .hero__copy {
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: auto auto auto auto;
    gap: var(--space-2);
  }

  .hero h1,
  .hero__intro,
  .frequency-nav {
    grid-column: 1;
  }

  .hero h1 {
    grid-row: 2;
  }

  .hero__intro {
    grid-row: 3;
    align-self: start;
  }

  .frequency-nav {
    grid-row: 4;
    margin-top: 0;
  }

  .hero__instrument {
    min-height: 12.5rem;
  }
}

@media (max-width: 48rem) {
  :root {
    --page-width: calc(100vw - 1rem);
  }

  body {
    font-size: 0.875rem;
  }

  .site-header {
    grid-template-columns: auto minmax(0, 1fr) auto;
    min-height: 3.25rem;
  }

  .wordmark,
  .station-clock {
    min-width: 0;
  }

  .wordmark {
    padding-left: 0.5rem;
    font-size: 0.75rem;
  }

  .station-clock {
    padding-right: 0.5rem;
  }

  .station-status {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.55rem 0.75rem;
    padding: 0.55rem;
  }

  .status-pulse {
    display: none;
  }

  .status-pair {
    padding-left: 0.4rem;
    border-left: 1px solid var(--line-soft);
  }

  .status-value {
    overflow: visible;
    text-overflow: clip;
    white-space: normal;
  }

  .hero {
    grid-template-columns: 1fr;
  }

  .hero__copy {
    display: block;
    min-height: 0;
    padding: var(--space-3) var(--space-4);
  }

  .hero h1 {
    margin-top: var(--space-1);
    font-size: clamp(1.75rem, 8.4vw, 2.1rem);
  }

  .hero__intro {
    font-size: 0.75rem;
    line-height: 1.45;
  }

  .frequency-nav {
    position: static;
    justify-content: space-between;
    margin-top: var(--space-3);
  }

  .hero__instrument {
    display: grid;
    grid-template-rows: 4.75rem;
    grid-template-columns: 5rem minmax(0, 1fr);
    min-height: 4.75rem;
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .orbital-array {
    width: 4.25rem;
    height: 4.25rem;
    margin: 0.25rem auto;
  }

  .orbit--outer {
    width: 4rem;
    height: 2.55rem;
  }

  .orbit--middle {
    width: 2.9rem;
    height: 1.7rem;
  }

  .orbit--inner {
    width: 1.75rem;
    height: 1.75rem;
  }

  .orbit-axis--x {
    width: 4.25rem;
  }

  .orbit-axis--y {
    height: 4.25rem;
  }

  .orbit-object {
    top: 1rem;
    right: 0.55rem;
  }

  .instrument-readout {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: center;
    height: 100%;
    border-top: 0;
    border-left: 1px solid var(--line-soft);
    text-align: center;
  }

  .signal-notice {
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-1);
    min-height: 2.75rem;
    padding-inline: var(--space-3);
  }

  .signal-notice p {
    margin: 0;
    padding-bottom: var(--space-2);
    overflow: visible;
    line-height: 1.4;
    text-overflow: clip;
    white-space: normal;
  }

  .signal-notice__code {
    display: none;
  }

  .frequency__header {
    grid-template-columns: 3.25rem minmax(0, 1fr);
    min-height: 7.1rem;
  }

  .frequency__number {
    font-size: 1.75rem;
  }

  .frequency__identity {
    padding: var(--space-3);
  }

  .frequency__header h2 {
    font-size: 1.55rem;
    white-space: normal;
  }

  .frequency__source {
    flex-wrap: wrap;
    padding: 0 var(--space-3) var(--space-3);
    white-space: normal;
  }

  .approach-index__header {
    display: block;
    padding-inline: var(--space-3);
  }

  .approach-index__header > p {
    margin-top: 0.35rem;
  }

  .approach-index__viewport {
    border-bottom: 1px solid var(--line-soft);
  }

  .approach-index__scroll-cue {
    display: block;
  }

  .approach-index__footer {
    padding-inline: var(--space-3);
  }

  .transmission {
    padding: var(--space-3);
  }

  .observation-grid > div {
    grid-template-columns: minmax(7.2rem, 0.9fr) minmax(0, 1.1fr);
  }

  .frequency__provenance {
    overflow: hidden;
  }

  .provenance__facts {
    display: grid;
    gap: 0.35rem;
    padding-inline: var(--space-3);
  }

  .site-footer {
    grid-template-columns: 1fr;
    gap: var(--space-3);
    padding: var(--space-3);
  }

  .protocol-key {
    flex-wrap: wrap;
    gap: var(--space-2) var(--space-4);
  }

  .site-footer__note {
    justify-self: start;
    text-align: left;
  }
}

@media (max-width: 24rem) {
  .station-clock {
    font-size: 0.75rem;
  }

  .status-pulse {
    display: none;
  }

  .hero__copy {
    min-height: 0;
  }

  .frequency-nav {
    gap: 0.5rem;
  }

  .frequency-nav a {
    font-size: 0.75rem;
  }

  .frequency__source > span + span::before {
    margin-inline: 0.35rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}