:root {
  --void: #081a27;
  --instrument: #e7e9df;
  --signal: #f05a28;
  --oxide: #547b88;
  --lunar: #9ca39f;
  --paper-signal: #d8d3b8;
}

.orbit-page {
  margin: 0;
  background: var(--void);
  color: var(--instrument);
  font-family: "Archivo", sans-serif;
  overflow-x: hidden;
}

.orbit-intro {
  min-height: 100svh;
  position: relative;
  display: grid;
  align-content: center;
  padding: 7rem clamp(1.2rem, 6vw, 7rem) 4rem;
  background:
    linear-gradient(rgba(231,233,223,.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(231,233,223,.055) 1px, transparent 1px),
    var(--void);
  background-size: 4.5rem 4.5rem;
  overflow: hidden;
}

.intro-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(17rem, .45fr);
  align-items: end;
  gap: clamp(2rem, 6vw, 7rem);
}

.intro-note,
.intro-side p {
  margin: 0;
}

.intro-note {
  margin-bottom: clamp(2rem, 8vh, 6rem);
  max-width: 28rem;
  color: var(--lunar);
  font-size: clamp(.9rem, 1.1vw, 1.1rem);
}

.orbit-intro h1 {
  margin: 0;
  max-width: 9.6ch;
  font-size: clamp(4.2rem, 10.4vw, 12rem);
  font-weight: 285;
  font-stretch: 76%;
  line-height: .78;
  letter-spacing: -.07em;
}

.intro-side {
  padding-bottom: .8rem;
}

.intro-side p {
  font-size: clamp(1rem, 1.25vw, 1.28rem);
  line-height: 1.5;
  color: rgba(231,233,223,.75);
}

.enter-link {
  display: inline-block;
  margin-top: 2rem;
  padding: .85rem 0;
  color: var(--signal);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.launch-diagram {
  position: absolute;
  right: -8vw;
  top: 2vh;
  width: min(52vw, 48rem);
  aspect-ratio: 1;
  border: 1px solid rgba(231,233,223,.1);
  border-radius: 50%;
  opacity: .65;
}

.launch-axis,
.launch-vector,
.launch-disc {
  position: absolute;
}

.launch-axis {
  width: 140%;
  height: 1px;
  left: -20%;
  top: 50%;
  background: rgba(231,233,223,.14);
  transform: rotate(-28deg);
}

.launch-vector {
  width: 45%;
  height: 1px;
  left: 22%;
  top: 50%;
  background: var(--signal);
  transform: rotate(-28deg);
  transform-origin: left;
}

.launch-disc {
  width: 13%;
  aspect-ratio: 1;
  left: 53%;
  top: 29%;
  border: 1px solid var(--paper-signal);
  border-radius: 50%;
  box-shadow: 0 0 0 1.4rem rgba(216,211,184,.035);
}

.orbital-shell {
  height: 100svh;
  position: relative;
  overflow: hidden;
  isolation: isolate;
  background: var(--void);
  cursor: grab;
}

.orbital-shell:active {
  cursor: grabbing;
}

.starfield {
  position: absolute;
  z-index: -3;
  inset: 0;
  width: 100%;
  height: 100%;
}

.orbital-shell::after {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 50% 50%, transparent 0 35%, rgba(8,26,39,.16) 70%, rgba(8,26,39,.72) 100%),
    linear-gradient(90deg, rgba(84,123,136,.05), transparent 25% 75%, rgba(84,123,136,.05));
}

.orbital-track {
  position: absolute;
  z-index: 1;
  inset: 0 auto 0 0;
  height: 100%;
  will-change: transform;
}

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

.trajectory-shadow,
.trajectory-line {
  fill: none;
  vector-effect: non-scaling-stroke;
}

.trajectory-shadow {
  stroke: rgba(216,211,184,.27);
  stroke-width: 1;
  stroke-dasharray: 5 9;
}

.trajectory-line {
  stroke: var(--signal);
  stroke-width: 1.8;
  filter: drop-shadow(0 0 7px rgba(240,90,40,.45));
}

.orbit-event {
  position: absolute;
  width: min(34rem, 58vw);
  min-height: 12rem;
  transform: translateY(-50%);
  color: var(--instrument);
  pointer-events: none;
}

.event-node {
  position: absolute;
  z-index: 3;
  left: -.85rem;
  top: calc(50% - .85rem);
  width: 1.7rem;
  aspect-ratio: 1;
  padding: 0;
  border: 1px solid rgba(231,233,223,.72);
  border-radius: 50%;
  background: var(--void);
  color: inherit;
  cursor: pointer;
  pointer-events: auto;
}

.event-node::before,
.event-node::after {
  content: "";
  position: absolute;
  inset: 50% auto auto 50%;
  background: currentColor;
  transform: translate(-50%,-50%);
}

.event-node::before {
  width: .36rem;
  height: .36rem;
  border-radius: 50%;
}

.event-node::after {
  width: 2.8rem;
  height: 1px;
  opacity: .25;
}

.event-copy {
  margin-left: clamp(2.5rem, 5vw, 5rem);
  padding-left: clamp(1.2rem, 2vw, 2rem);
  border-left: 1px solid rgba(231,233,223,.18);
}

.event-year {
  display: block;
  margin-bottom: .25rem;
  color: var(--lunar);
  font-size: clamp(.85rem, 1vw, 1rem);
  font-weight: 500;
  letter-spacing: .08em;
}

.event-copy h2 {
  margin: 0;
  max-width: 11ch;
  font-size: clamp(2rem, 4.4vw, 5.4rem);
  font-weight: 330;
  font-stretch: 83%;
  line-height: .9;
  letter-spacing: -.055em;
}

.event-copy p {
  margin: 1rem 0 0;
  max-width: 34rem;
  color: rgba(231,233,223,.66);
  font-size: clamp(.88rem, 1vw, 1.02rem);
  line-height: 1.5;
}

.event-telemetry {
  display: grid;
  grid-template-columns: repeat(3, max-content);
  gap: 1.4rem;
  margin-top: 1.4rem;
  color: var(--oxide);
  font-size: .72rem;
}

.event-telemetry b {
  display: block;
  margin-top: .16rem;
  color: var(--paper-signal);
  font-size: .92rem;
  font-weight: 500;
}

.event-diagram {
  position: absolute;
  width: clamp(9rem, 15vw, 15rem);
  aspect-ratio: 1;
  left: clamp(4rem, 9vw, 9rem);
  top: 50%;
  opacity: .16;
  transform: translate(-50%,-50%);
  border: 1px solid currentColor;
  border-radius: 50%;
  pointer-events: none;
}

.event-diagram::before,
.event-diagram::after {
  content: "";
  position: absolute;
  border-radius: 50%;
}

.event-diagram::before {
  inset: 18%;
  border: 1px dashed currentColor;
}

.event-diagram::after {
  width: 12%;
  aspect-ratio: 1;
  right: 4%;
  top: 45%;
  background: currentColor;
}

.orbit-event.is-active .event-node {
  color: var(--signal);
  border-color: var(--signal);
  box-shadow: 0 0 0 .65rem rgba(240,90,40,.08);
}

.orbit-event.is-active .event-copy {
  border-color: rgba(240,90,40,.7);
}

.orbit-event.is-active .event-diagram {
  opacity: .34;
}

.orbit-reticle {
  position: absolute;
  z-index: 5;
  left: 50%;
  top: 50%;
  width: clamp(8rem, 13vw, 13rem);
  aspect-ratio: 1;
  transform: translate(-50%,-50%);
  pointer-events: none;
  color: var(--signal);
  mix-blend-mode: screen;
}

.reticle-ring {
  position: absolute;
  inset: 0;
  border: 1px solid currentColor;
  border-radius: 50%;
  opacity: .28;
}

.reticle-ring::after {
  content: "";
  position: absolute;
  inset: 12%;
  border: 1px dashed currentColor;
  border-radius: inherit;
  opacity: .45;
}

.reticle-cross {
  position: absolute;
  background: currentColor;
  opacity: .35;
}

.reticle-cross-x {
  width: 145%;
  height: 1px;
  top: 50%;
  left: -22.5%;
}

.reticle-cross-y {
  height: 145%;
  width: 1px;
  left: 50%;
  top: -22.5%;
}

.reticle-year {
  position: absolute;
  left: 50%;
  top: 50%;
  padding: .18rem .45rem;
  background: var(--void);
  transform: translate(-50%,-50%);
  font-size: clamp(.85rem, 1vw, 1rem);
  font-weight: 520;
}

.orbit-hud {
  position: absolute;
  z-index: 7;
  left: clamp(1rem, 2.8vw, 2.8rem);
  top: 18%;
  bottom: 18%;
  width: 3rem;
  display: grid;
  grid-template-rows: auto 1fr auto;
  justify-items: start;
  gap: .8rem;
  color: var(--lunar);
  font-size: .7rem;
  pointer-events: none;
}

.hud-scale {
  grid-row: 2;
  width: 1px;
  height: 100%;
  margin-left: .25rem;
  background: rgba(231,233,223,.16);
  position: relative;
}

.hud-progress {
  position: absolute;
  left: 0;
  top: 0;
  width: 1px;
  height: 100%;
  background: var(--signal);
  transform: scaleY(0);
  transform-origin: top;
}

.hud-end {
  grid-row: 3;
}

.orbit-index {
  position: absolute;
  z-index: 8;
  right: clamp(1rem, 2.8vw, 2.8rem);
  top: 50%;
  display: grid;
  gap: .5rem;
  transform: translateY(-50%);
}

.index-dot {
  width: 2.7rem;
  min-height: 1.55rem;
  padding: 0;
  border: 0;
  border-right: 1px solid rgba(231,233,223,.23);
  background: transparent;
  color: rgba(231,233,223,.48);
  text-align: right;
  font: 500 .66rem/1 "Archivo", sans-serif;
  cursor: pointer;
}

.index-dot.is-active {
  color: var(--signal);
  border-color: var(--signal);
}

.gesture-hint {
  position: absolute;
  z-index: 7;
  right: clamp(1rem, 2.8vw, 2.8rem);
  bottom: 1.7rem;
  display: flex;
  align-items: center;
  gap: .75rem;
  color: rgba(231,233,223,.38);
  font-size: .68rem;
  pointer-events: none;
}

.gesture-line {
  width: 2.5rem;
  height: 1px;
  background: currentColor;
}

.orbit-outro {
  min-height: 55svh;
  display: grid;
  place-content: center;
  gap: 2rem;
  padding: 4rem 1.2rem;
  text-align: center;
  background: var(--instrument);
  color: var(--void);
}

.orbit-outro p {
  margin: 0;
  max-width: 22ch;
  font-size: clamp(2rem, 5vw, 5rem);
  font-weight: 320;
  line-height: .95;
  letter-spacing: -.05em;
}

.orbit-outro a {
  justify-self: center;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

.no-gsap .orbital-shell {
  overflow-x: auto;
  overflow-y: hidden;
}

@media (max-width: 720px) {
  .intro-grid {
    grid-template-columns: 1fr;
  }

  .orbit-intro h1 {
    max-width: 8.5ch;
  }

  .launch-diagram {
    width: 82vw;
    right: -40vw;
    opacity: .35;
  }

  .orbit-event {
    width: 76vw;
  }

  .event-copy h2 {
    font-size: clamp(2.2rem, 11vw, 4.8rem);
  }

  .event-telemetry {
    gap: .75rem;
  }

  .orbit-reticle {
    left: 47%;
    width: 7rem;
  }

  .orbit-index {
    right: .65rem;
  }

  .orbit-hud {
    left: .65rem;
  }

  .gesture-hint {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .orbit-page {
    overflow-x: hidden;
  }

  .orbital-shell {
    height: auto;
    min-height: 100svh;
    overflow: visible;
    cursor: default;
  }

  .starfield,
  .trajectory,
  .orbit-reticle,
  .orbit-hud,
  .gesture-hint {
    display: none;
  }

  .orbital-track {
    position: relative;
    width: 100% !important;
    height: auto;
    transform: none !important;
    padding: 6rem 1.2rem;
  }

  .orbit-events {
    display: grid;
    gap: 5rem;
  }

  .orbit-event {
    position: relative;
    left: auto !important;
    top: auto !important;
    width: min(46rem, 100%);
    min-height: 0;
    transform: none;
    margin-inline: auto;
  }

  .event-node {
    left: 0;
    top: .5rem;
  }

  .event-copy {
    margin-left: 2.4rem;
  }

  .event-diagram {
    display: none;
  }

  .orbit-index {
    display: none;
  }
}