:root {
  --black: #030405;
  --white: #f0f1ee;
  --muted: #8b8e8e;
  --line: rgba(240, 241, 238, 0.22);
  --accent: #9fc8e0;
  --page-padding: clamp(1.25rem, 3vw, 3rem);
  --ease-cinematic: cubic-bezier(0.76, 0, 0.24, 1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--black);
}

body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  color: var(--white);
  background: var(--black);
  font-family: "Inter", "Helvetica Neue", Arial, sans-serif;
  font-weight: 300;
  -webkit-font-smoothing: antialiased;
}

body.is-loading {
  overflow: hidden;
}

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

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

:focus-visible {
  outline: 1px solid var(--accent);
  outline-offset: 0.35rem;
}

.noscript-message {
  position: fixed;
  z-index: 100;
  inset: auto 1rem 1rem;
  padding: 0.75rem 1rem;
  background: var(--white);
  color: var(--black);
  text-align: center;
  font-size: 0.875rem;
}

/* Wordmark shared by the preserved Journey hero. */
.wordmark { margin: 0; text-transform: uppercase; }
.wordmark span { display: block; }

/* Shared atmospheric layers */
.starfield {
  position: fixed;
  z-index: 0;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 2.2s ease 0.15s;
}

body.is-ready .starfield {
  opacity: 1;
}

.space-haze {
  position: fixed;
  z-index: 1;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 50% 47%, rgba(83, 108, 122, 0.09), transparent 34%),
    linear-gradient(to bottom, rgba(3, 4, 5, 0.2), transparent 40%, rgba(3, 4, 5, 0.7));
}

.space-haze::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.12;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 160 160' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.22'/%3E%3C/svg%3E");
  mix-blend-mode: soft-light;
}

/* Header */
.site-header {
  position: fixed;
  z-index: 10;
  top: 0;
  left: 0;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  width: 100%;
  padding: 1.5rem var(--page-padding);
  opacity: 0;
  transform: translateY(-0.75rem);
  transition:
    opacity 1.2s ease 1s,
    transform 1.2s ease 1s;
}

body.is-ready .site-header {
  opacity: 1;
  transform: none;
}

.site-mark,
.site-header__status,
.menu-button {
  margin: 0;
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.18em;
}

.site-header__status {
  color: rgba(240, 241, 238, 0.5);
}

.menu-button {
  justify-self: end;
  padding: 0;
  border: 0;
  color: inherit;
  background: none;
  font-family: inherit;
  opacity: 0.65;
  cursor: pointer;
}

/* Opening hero */
.hero {
  position: relative;
  z-index: 2;
  display: grid;
  min-height: 100svh;
  place-items: center;
  overflow: hidden;
  padding: 7rem var(--page-padding) 5rem;
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 50%;
  pointer-events: none;
}

.hero::before {
  width: min(68vw, 63rem);
  aspect-ratio: 1;
}

.hero::after {
  width: min(48vw, 44rem);
  aspect-ratio: 1;
}

.hero__content {
  text-align: center;
  will-change: transform, opacity;
}

.hero__eyebrow {
  margin: 0 0 1.5rem;
  color: rgba(240, 241, 238, 0.58);
  font-size: clamp(0.58rem, 0.7vw, 0.7rem);
  letter-spacing: 0.32em;
  opacity: 0;
  transform: translateY(0.75rem);
  transition: 1.2s ease 1.05s;
}

.wordmark--hero {
  font-size: clamp(4rem, 12.7vw, 12rem);
  font-weight: 300;
  line-height: 0.77;
  letter-spacing: -0.065em;
}

.wordmark--hero span {
  opacity: 0;
  transform: translateY(0.55em);
  transition:
    opacity 1.25s ease,
    transform 1.5s var(--ease-cinematic);
}

.wordmark--hero span:last-child {
  margin-top: 0.22em;
  font-size: 0.46em;
  letter-spacing: 0.48em;
  transform: translate(0.24em, 1em);
}

body.is-ready .wordmark--hero span {
  opacity: 1;
  transform: none;
  transition-delay: 0.35s;
}

body.is-ready .wordmark--hero span:last-child {
  transform: translateX(0.24em);
  transition-delay: 0.48s;
}

body.is-ready .hero__eyebrow,
body.is-ready .hero__intro,
body.is-ready .hero__coordinates,
body.is-ready .scroll-cue {
  opacity: 1;
  transform: none;
}

.hero__intro {
  margin: 2.6rem 0 0;
  color: rgba(240, 241, 238, 0.62);
  font-size: clamp(0.85rem, 1.1vw, 1.05rem);
  line-height: 1.65;
  letter-spacing: 0.02em;
  opacity: 0;
  transform: translateY(0.75rem);
  transition: 1.2s ease 1.1s;
}

.hero__coordinates {
  position: absolute;
  bottom: 2rem;
  left: var(--page-padding);
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  color: rgba(240, 241, 238, 0.3);
  font-size: 0.6rem;
  letter-spacing: 0.15em;
  opacity: 0;
  transform: translateY(0.75rem);
  transition: 1.2s ease 1.35s;
}

.scroll-cue {
  position: absolute;
  bottom: 0;
  left: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.8rem;
  color: rgba(240, 241, 238, 0.55);
  font-size: 0.57rem;
  letter-spacing: 0.24em;
  opacity: 0;
  transform: translate(-50%, 0.75rem);
  transition: opacity 1.2s ease 1.5s, transform 1.2s ease 1.5s;
}

.scroll-cue__line {
  position: relative;
  display: block;
  width: 1px;
  height: 2.75rem;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.16);
}

.scroll-cue__line::after {
  content: "";
  position: absolute;
  top: -100%;
  left: 0;
  width: 100%;
  height: 55%;
  background: var(--white);
  animation: scroll-pulse 2.4s ease-in-out infinite 2.4s;
}

/* First scrollytelling transition */
.departure {
  position: relative;
  z-index: 2;
  height: 4200svh;
  background: transparent;
}

.journey-viewport {
  position: sticky;
  top: 0;
  height: 100svh;
  overflow: hidden;
  isolation: isolate;
  background: linear-gradient(to bottom, rgba(3, 4, 5, 0.04), rgba(3, 4, 5, 0.5));
}

.journey-canvas {
  position: absolute;
  z-index: -1;
  inset: 0;
  width: 100%;
  height: 100%;
}

.departure__copy {
  position: absolute;
  z-index: 2;
  top: 34%;
  left: var(--page-padding);
  max-width: 35rem;
  opacity: var(--departure-copy-opacity, 0);
  transform: translateY(var(--departure-copy-y, 3rem));
  will-change: transform, opacity;
}

.departure__index {
  margin: 0 0 1.4rem;
  color: var(--accent);
  font-size: 0.63rem;
  font-weight: 400;
  letter-spacing: 0.24em;
}

.departure h2 {
  margin: 0;
  font-size: clamp(2.9rem, 8vw, 8rem);
  font-weight: 300;
  line-height: 0.92;
  letter-spacing: -0.055em;
}

.departure__copy > p:last-child {
  margin: 1.5rem 0 0;
  color: rgba(240, 241, 238, 0.52);
  font-size: 0.95rem;
  letter-spacing: 0.06em;
}

.departure__guide {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1px;
  background: linear-gradient(transparent, var(--line) 30%, transparent 80%);
  opacity: var(--guide-opacity, 0.12);
}

.scale-label {
  position: absolute;
  z-index: 3;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  pointer-events: none;
  opacity: 0;
  will-change: transform, opacity;
}

.scale-label::before {
  content: "";
  position: absolute;
  top: 0.35rem;
  right: calc(100% + 0.75rem);
  width: clamp(1.5rem, 5vw, 5rem);
  height: 1px;
  background: var(--line);
}

.scale-label--earth {
  top: 21%;
  right: var(--page-padding);
  text-align: right;
  opacity: var(--earth-label-opacity, 0);
  transform: translateX(calc((1 - var(--earth-label-opacity, 0)) * 1rem));
}

.scale-label--moon {
  top: 23%;
  left: var(--page-padding);
  opacity: var(--moon-label-opacity, 0);
  transform: translateY(calc((1 - var(--moon-label-opacity, 0)) * 1rem));
}

.scale-label--moon::before {
  right: auto;
  left: calc(100% + 0.75rem);
}

.scale-index {
  position: fixed;
  z-index: 20;
  inset: 0;
  display: grid;
  grid-template-rows: auto 1fr;
  padding: 1.65rem var(--page-padding) 2rem;
  background: rgba(3, 4, 5, 0.96);
  opacity: 0;
  visibility: hidden;
  transition: opacity 320ms ease, visibility 0s linear 320ms;
}

.scale-index.is-open {
  opacity: 1;
  visibility: visible;
  transition-delay: 0s;
}

.scale-index__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
  color: rgba(240, 241, 238, 0.44);
  font-size: 0.58rem;
  letter-spacing: 0.2em;
}

.scale-index__close {
  padding: 0.8rem 0;
  border: 0;
  color: var(--white);
  background: transparent;
  font: inherit;
  letter-spacing: inherit;
  cursor: pointer;
}

.scale-index__list {
  display: grid;
  align-content: center;
  max-width: 78rem;
  width: 100%;
  margin: 0 auto;
  padding: 1rem 0;
  list-style: none;
}

.scale-index__list li {
  border-bottom: 1px solid rgba(240, 241, 238, 0.1);
}

.scale-index__list a {
  display: grid;
  grid-template-columns: 3rem 1fr auto;
  align-items: baseline;
  gap: 1rem;
  padding: clamp(0.65rem, 1.25vh, 1.1rem) 0;
  color: rgba(240, 241, 238, 0.42);
  text-decoration: none;
  transition: color 180ms ease, padding-left 180ms ease;
}

.scale-index__list a:hover,
.scale-index__list a:focus-visible,
.scale-index__list a[aria-current="true"] {
  padding-left: 0.65rem;
  color: var(--white);
}

.scale-index__list span,
.scale-index__list small {
  font-size: 0.56rem;
  font-weight: 400;
  letter-spacing: 0.18em;
}

.scale-index__list strong {
  font-size: clamp(1.15rem, 2.5vw, 2.2rem);
  font-weight: 300;
  letter-spacing: -0.025em;
}

.scale-index__list small {
  color: rgba(240, 241, 238, 0.3);
}

body.index-open {
  overflow: hidden;
}

.solar-copy {
  position: absolute;
  z-index: 2;
  top: 31%;
  left: var(--page-padding);
  opacity: var(--solar-copy-opacity, 0);
  transform: translateY(calc((1 - var(--solar-copy-opacity, 0)) * 1.5rem));
  pointer-events: none;
}

.outer-copy {
  position: absolute;
  z-index: 2;
  top: 31%;
  left: var(--page-padding);
  opacity: var(--outer-copy-opacity, 0);
  transform: translateY(calc((1 - var(--outer-copy-opacity, 0)) * 1.5rem));
  pointer-events: none;
}

.stellar-copy {
  position: absolute;
  z-index: 2;
  top: 31%;
  left: var(--page-padding);
  opacity: var(--stellar-copy-opacity, 0);
  transform: translateY(calc((1 - var(--stellar-copy-opacity, 0)) * 1.5rem));
  pointer-events: none;
}

.galactic-copy {
  position: absolute;
  z-index: 2;
  top: 31%;
  left: var(--page-padding);
  opacity: var(--galactic-copy-opacity, 0);
  transform: translateY(calc((1 - var(--galactic-copy-opacity, 0)) * 1.5rem));
  pointer-events: none;
}

.group-copy {
  position: absolute;
  z-index: 2;
  top: 31%;
  left: var(--page-padding);
  opacity: var(--group-copy-opacity, 0);
  transform: translateY(calc((1 - var(--group-copy-opacity, 0)) * 1.5rem));
  pointer-events: none;
}

.web-copy {
  position: absolute;
  z-index: 2;
  top: 31%;
  left: var(--page-padding);
  opacity: var(--web-copy-opacity, 0);
  transform: translateY(calc((1 - var(--web-copy-opacity, 0)) * 1.5rem));
  pointer-events: none;
}

.universe-copy {
  position: absolute;
  z-index: 2;
  top: 31%;
  left: var(--page-padding);
  opacity: var(--universe-copy-opacity, 0);
  transform: translateY(calc((1 - var(--universe-copy-opacity, 0)) * 1.5rem));
  pointer-events: none;
}

.solar-copy__title {
  margin: 0;
  font-size: clamp(2.5rem, 6vw, 6rem);
  font-weight: 300;
  line-height: 0.94;
  letter-spacing: -0.05em;
}

.scale-label--sun {
  top: 18%;
  right: var(--page-padding);
  text-align: right;
  opacity: var(--sun-label-opacity, 0);
}

.scale-label--au {
  left: var(--page-padding);
  bottom: 15%;
  opacity: var(--au-label-opacity, 0);
}

.scale-label--au::before {
  right: auto;
  left: calc(100% + 0.75rem);
}

.scale-label--neptune {
  right: var(--page-padding);
  bottom: 15%;
  text-align: right;
  opacity: var(--neptune-label-opacity, 0);
}

.scale-label--proxima {
  right: var(--page-padding);
  bottom: 15%;
  text-align: right;
  opacity: var(--proxima-label-opacity, 0);
}

.scale-label--galaxy {
  right: var(--page-padding);
  bottom: 15%;
  text-align: right;
  opacity: var(--galaxy-label-opacity, 0);
}

.scale-label--andromeda {
  right: var(--page-padding);
  bottom: 15%;
  text-align: right;
  opacity: var(--andromeda-label-opacity, 0);
}

.scale-label--laniakea {
  right: var(--page-padding);
  bottom: 15%;
  text-align: right;
  opacity: var(--laniakea-label-opacity, 0);
}

.scale-label--universe {
  right: var(--page-padding);
  bottom: 15%;
  text-align: right;
  opacity: var(--universe-label-opacity, 0);
}

.journey-reset {
  position: absolute;
  z-index: 4;
  left: var(--page-padding);
  bottom: 1.8rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: rgba(240, 241, 238, 0.62);
  font-size: 0.57rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  opacity: var(--journey-reset-opacity, 0);
  transform: translateX(calc((1 - var(--journey-reset-opacity, 0)) * 0.8rem));
  pointer-events: none;
}

.journey-reset.is-active {
  pointer-events: auto;
}

.journey-reset span {
  color: var(--accent);
  font-size: 0.85rem;
  transition: transform 180ms ease;
}

.journey-reset:hover span,
.journey-reset:focus-visible span {
  transform: translateX(-0.25rem);
}

.scale-label__name,
.scale-label__distance {
  color: var(--white);
  font-size: clamp(0.76rem, 1vw, 0.95rem);
  font-weight: 400;
  letter-spacing: 0.22em;
}

.scale-label__detail {
  color: rgba(240, 241, 238, 0.38);
  font-size: 0.57rem;
  letter-spacing: 0.2em;
}

.journey-progress {
  position: absolute;
  right: var(--page-padding);
  bottom: 1.8rem;
  display: flex;
  gap: 1rem;
  margin: 0;
  color: rgba(240, 241, 238, 0.32);
  font-size: 0.57rem;
  letter-spacing: 0.2em;
  opacity: var(--journey-ui-opacity, 0);
}

.journey-progress::before {
  content: "";
  align-self: center;
  width: clamp(2.5rem, 5vw, 5rem);
  height: 1px;
  background: linear-gradient(
    to right,
    rgba(159, 200, 224, 0.72) 0 var(--journey-progress-value, 0%),
    rgba(240, 241, 238, 0.16) var(--journey-progress-value, 0%) 100%
  );
}

@keyframes scroll-pulse {
  0% { transform: translateY(0); }
  60%, 100% { transform: translateY(360%); }
}

@media (max-width: 700px) {
  .journey-progress::before {
    display: none;
  }

  .scale-index__list a {
    grid-template-columns: 2rem 1fr;
  }

  .scale-index__list small {
    display: none;
  }
  .site-header {
    grid-template-columns: 1fr 1fr;
  }

  .site-header__status,
  .hero__coordinates {
    display: none;
  }

  .wordmark--hero {
    font-size: clamp(3.4rem, 19vw, 7rem);
  }

  .hero::before {
    width: 110vw;
  }

  .hero::after {
    width: 76vw;
  }

  .hero__intro br {
    display: none;
  }

  .departure__copy {
    top: 20%;
  }

  .scale-label--earth {
    top: 13%;
  }

  .scale-label--moon {
    top: 17%;
  }

  .solar-copy {
    top: 21%;
  }

  .outer-copy {
    top: 21%;
  }

  .stellar-copy {
    top: 21%;
  }

  .galactic-copy {
    top: 21%;
  }

  .group-copy {
    top: 21%;
  }

  .web-copy {
    top: 21%;
  }

  .universe-copy {
    top: 21%;
  }

  .scale-label--sun {
    top: 13%;
  }

  .scale-label--au {
    bottom: 12%;
  }

  .scale-label--neptune {
    bottom: 12%;
  }

  .scale-label--proxima {
    bottom: 12%;
  }

  .scale-label--galaxy {
    bottom: 12%;
  }

  .scale-label--andromeda {
    bottom: 12%;
  }

  .scale-label--laniakea {
    bottom: 12%;
  }
}

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

/* Shared page navigation */
.primary-nav { display:flex; gap:clamp(14px,3vw,36px); align-items:center; }
.primary-nav a { font-size:10px; letter-spacing:.12em; text-transform:uppercase; color:var(--muted); padding:8px 0; white-space:nowrap; }
.primary-nav a[aria-current] { color:var(--white); border-bottom:1px solid var(--accent); }
@media(max-width:700px) { .site-header { grid-template-columns:auto 1fr auto; gap:18px; } .primary-nav { justify-content:center; gap:14px; } .primary-nav a { font-size:9px; letter-spacing:.03em; } }