:root {
  color-scheme: dark;
  --night: #061421;
  --night-soft: #0b2031;
  --white: #f4f9fc;
  --muted: #a8bac9;
  --cyan: #5ac9eb;
  --lime: #c8f35d;
  --edge: rgba(156, 211, 230, .17);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  background: var(--night);
  color: var(--white);
  font-family: "Segoe UI Variable Display", "Segoe UI", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
button { font: inherit; }
svg, img { display: block; }
::selection { background: var(--lime); color: var(--night); }
:focus-visible { outline: 2px solid var(--lime); outline-offset: 5px; }

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 12px 16px;
  transform: translateY(-150%);
  background: var(--lime);
  color: var(--night);
  text-decoration: none;
  font-weight: 700;
}
.skip-link:focus { transform: translateY(0); }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.page-shell {
  position: relative;
  background:
    radial-gradient(ellipse 65% 55% at 82% 48%, rgba(14, 74, 104, .38), transparent 73%),
    radial-gradient(ellipse 45% 43% at 4% 8%, rgba(7, 52, 82, .3), transparent 72%),
    var(--night);
}

.site-header {
  position: relative;
  z-index: 20;
  width: min(100%, 1580px);
  min-height: 100px;
  margin: auto;
  padding: 24px clamp(25px, 5.25vw, 84px);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 36px;
  border-bottom: 1px solid rgba(151, 206, 224, .09);
}
.brand {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  min-width: 0;
}
.brand img { width: 201px; height: auto; }
.desktop-nav {
  display: flex;
  align-items: center;
  gap: clamp(27px, 3vw, 53px);
}
.desktop-nav a,
.header-access {
  text-decoration: none;
  font-size: 13px;
  font-weight: 650;
  letter-spacing: .01em;
}
.desktop-nav a {
  position: relative;
  padding: 12px 0;
  color: #becfd9;
  transition: color .25s ease;
}
.desktop-nav a::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 5px;
  left: 0;
  height: 1px;
  background: var(--lime);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s ease;
}
.desktop-nav a:hover,
.desktop-nav a:focus-visible { color: var(--white); }
.desktop-nav a:hover::after,
.desktop-nav a:focus-visible::after { transform: scaleX(1); }
.header-access {
  justify-self: end;
  display: inline-flex;
  align-items: center;
  gap: 22px;
  min-height: 45px;
  padding: 0 18px 0 20px;
  border: 1px solid rgba(181, 230, 238, .3);
  border-radius: 100px;
  background: rgba(255, 255, 255, .025);
  color: var(--white);
  transition: border-color .25s ease, background .25s ease, transform .25s ease;
}
.header-access:hover {
  transform: translateY(-2px);
  border-color: var(--lime);
  background: rgba(200, 243, 93, .075);
}
.header-access svg { width: 18px; height: 18px; color: var(--lime); }
.menu-toggle, .mobile-nav { display: none; }

.hero {
  position: relative;
  isolation: isolate;
  overflow: clip;
  min-height: max(780px, calc(100svh - 100px));
}
.hero-grid {
  position: absolute;
  inset: 0;
  z-index: -3;
  pointer-events: none;
  opacity: .3;
  background-image:
    linear-gradient(to right, rgba(148, 200, 222, .1) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(148, 200, 222, .1) 1px, transparent 1px);
  background-size: 96px 96px;
  mask-image: linear-gradient(to right, transparent, #000 18%, #000 86%, transparent);
}
.hero-glow {
  position: absolute;
  z-index: -2;
  pointer-events: none;
  border-radius: 50%;
}
.hero-glow-left {
  left: -27%;
  bottom: -57%;
  width: 70vw;
  height: 70vw;
  background: radial-gradient(circle, rgba(21, 83, 113, .15), transparent 67%);
}
.hero-glow-right {
  top: -21%;
  right: -23%;
  width: min(78vw, 1180px);
  height: min(78vw, 1180px);
  background: radial-gradient(circle, rgba(20, 94, 122, .11), transparent 66%);
}
.hero-inner {
  position: relative;
  width: min(100%, 1580px);
  min-height: max(780px, calc(100svh - 100px));
  margin: auto;
  padding: clamp(60px, 8vh, 115px) clamp(25px, 5.25vw, 84px) 140px;
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
  align-items: center;
}
.hero-copy { position: relative; z-index: 3; }
.eyebrow {
  display: flex;
  align-items: center;
  gap: 13px;
  margin: 0 0 clamp(27px, 3vw, 44px);
  color: #b4c9d4;
  font-size: 10px;
  font-weight: 750;
  letter-spacing: .23em;
  line-height: 1.5;
}
.eyebrow-signal {
  display: block;
  width: 22px;
  height: 1px;
  flex: none;
  background: var(--lime);
  box-shadow: 0 0 14px rgba(200, 243, 93, .8);
}
h1 {
  margin: 0;
  font-size: clamp(4.1rem, 6.4vw, 7.55rem);
  font-weight: 720;
  letter-spacing: -.075em;
  line-height: .99;
}
.title-row {
  display: block;
  width: fit-content;
  max-width: 100%;
  overflow: hidden;
  white-space: nowrap;
  padding-right: .1em;
}
.title-row > span { display: block; }
.title-accent { color: var(--lime); }
.title-period { color: var(--cyan); }
.hero-description {
  max-width: 540px;
  margin: clamp(27px, 3.1vw, 44px) 0 0;
  color: var(--muted);
  font-size: clamp(15px, 1.22vw, 18px);
  line-height: 1.75;
  letter-spacing: .003em;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 28px;
  margin-top: 34px;
}
.button-primary {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  min-width: 208px;
  min-height: 58px;
  padding: 7px 7px 7px 23px;
  border: 1px solid var(--lime);
  border-radius: 100px;
  background: var(--lime);
  color: #102313;
  text-decoration: none;
  font-size: 14px;
  font-weight: 800;
  transition: background .25s ease, transform .25s ease, box-shadow .25s ease;
}
.button-primary:hover {
  transform: translateY(-3px);
  background: #d8ff77;
  box-shadow: 0 12px 35px rgba(162, 221, 65, .17);
}
.button-icon {
  display: grid;
  width: 42px;
  height: 42px;
  flex: none;
  place-items: center;
  border-radius: 50%;
  background: #102313;
  color: var(--lime);
}
.button-icon svg { width: 20px; height: 20px; transition: transform .25s ease; }
.button-primary:hover .button-icon svg { transform: translateX(2px); }
.button-text {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-height: 44px;
  color: #dce8ed;
  text-decoration: none;
  font-size: 13px;
  font-weight: 700;
  transition: color .25s ease;
}
.button-text:hover { color: var(--lime); }
.button-text svg { width: 18px; height: 18px; color: var(--lime); }

.hero-visual {
  position: relative;
  z-index: 1;
  width: min(47.5vw, 690px);
  height: min(47.5vw, 690px);
  min-width: 540px;
  min-height: 540px;
  margin: -35px 0 0 -70px;
  scroll-margin-top: 110px;
}
.scene-parallax {
  position: relative;
  width: 100%;
  height: 100%;
}
.scene-atmosphere {
  position: absolute;
  inset: 7%;
  border-radius: 50%;
  background:
    radial-gradient(circle at center, rgba(38, 133, 167, .15) 0 19%, transparent 48%),
    radial-gradient(circle at center, rgba(39, 172, 206, .05) 0 42%, transparent 70%);
}
.orbit-lines { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }
.scene-hairline {
  position: absolute;
  display: block;
  width: 1px;
  height: 94px;
  background: linear-gradient(to bottom, transparent, rgba(82, 178, 209, .38), transparent);
}
.scene-hairline-a { top: 1%; left: 50%; }
.scene-hairline-b { right: 2%; bottom: 37%; transform: rotate(90deg); }
.knowledge-core {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 43%;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  transform: translate(-50%, -50%);
  border: 1px solid rgba(126, 205, 226, .38);
  border-radius: 50%;
  background:
    radial-gradient(circle at 34% 29%, rgba(108, 208, 229, .21), transparent 31%),
    radial-gradient(circle at 62% 72%, rgba(43, 160, 213, .16), transparent 36%),
    linear-gradient(145deg, #103a55 0%, #071e31 49%, #0b2941 100%);
  box-shadow:
    inset 0 0 34px rgba(100, 196, 224, .16),
    inset 0 -25px 42px rgba(1, 10, 23, .5),
    0 27px 85px rgba(0, 0, 0, .42),
    0 0 70px rgba(32, 155, 194, .14);
}
.knowledge-core::before {
  content: "";
  position: absolute;
  inset: 8%;
  border: 1px solid rgba(129, 216, 231, .12);
  border-radius: 50%;
}
.knowledge-core img {
  position: relative;
  z-index: 2;
  width: 53%;
  height: auto;
  filter: drop-shadow(0 15px 18px rgba(0, 7, 20, .45));
}
.core-light {
  position: absolute;
  top: 8%;
  left: 22%;
  width: 61%;
  height: 18%;
  border-radius: 50%;
  background: rgba(160, 226, 242, .12);
  filter: blur(17px);
  transform: rotate(-26deg);
}
.core-ring {
  position: absolute;
  inset: -9%;
  border: 1px solid rgba(102, 194, 222, .13);
  border-radius: 50%;
}
.core-ring::after {
  content: "";
  position: absolute;
  inset: -11%;
  border: 1px solid rgba(102, 194, 222, .07);
  border-radius: 50%;
}
.orbit-label {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 8px;
  color: #aac3ce;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .12em;
  white-space: nowrap;
}
.orbit-label i {
  display: block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 0 5px rgba(200, 243, 93, .09), 0 0 18px rgba(200, 243, 93, .75);
}
.orbit-label b { margin-left: 6px; color: #e6f2f5; font-weight: 750; }
.orbit-label-one { top: 19%; right: -3%; }
.orbit-label-two { top: 63%; left: -4%; }
.orbit-label-three { right: -10%; bottom: 17%; }
.orbit-label-two i { background: var(--cyan); box-shadow: 0 0 0 5px rgba(90, 201, 235, .09), 0 0 18px rgba(90, 201, 235, .75); }
.spark {
  position: absolute;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: #ccecf4;
  box-shadow: 0 0 13px rgba(169, 238, 251, .85);
}
.spark-one { top: 12%; left: 27%; }
.spark-two { top: 72%; right: 13%; }
.spark-three { bottom: 19%; left: 21%; }
.scene-caption {
  position: absolute;
  right: 7%;
  bottom: 0;
  color: #7f9cac;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .15em;
  white-space: nowrap;
}
.scene-caption span { color: var(--lime); }
.hero-bottom {
  position: absolute;
  z-index: 4;
  right: clamp(25px, 5.25vw, 84px);
  bottom: 28px;
  left: clamp(25px, 5.25vw, 84px);
  display: flex;
  align-items: end;
  justify-content: space-between;
}
.scroll-cue {
  display: inline-flex;
  align-items: center;
  gap: 13px;
  color: #a3bac7;
  text-decoration: none;
  font-size: 9px;
  font-weight: 750;
  letter-spacing: .23em;
  transition: color .25s ease;
}
.scroll-cue:hover { color: var(--white); }
.scroll-track {
  position: relative;
  display: block;
  width: 25px;
  height: 43px;
  border: 1px solid rgba(156, 211, 230, .42);
  border-radius: 100px;
}
.scroll-track > span {
  position: absolute;
  top: 9px;
  left: 50%;
  width: 2px;
  height: 9px;
  border-radius: 2px;
  background: var(--lime);
  transform: translateX(-50%);
  animation: scroll-pulse 2.2s ease-in-out infinite;
}
.hero-coordinate { color: #6c8b9d; font-size: 10px; font-weight: 750; letter-spacing: .17em; }

.travel {
  position: relative;
  min-height: 100svh;
  overflow: hidden;
  background: #061421;
}
.travel-stage {
  position: relative;
  isolation: isolate;
  display: grid;
  min-height: 100svh;
  place-items: center;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 52%, rgba(20, 86, 116, .17), transparent 48%),
    linear-gradient(180deg, #061421, #071b2b);
}
.travel-stage::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: .26;
  background-image: radial-gradient(circle, #a8dce8 .7px, transparent 1px);
  background-size: 103px 109px;
  mask-image: radial-gradient(ellipse at center, black, transparent 68%);
}
.travel-stars {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.travel-stars span {
  position: absolute;
  width: 2px;
  height: 2px;
  border-radius: 50%;
  background: #b1e5ed;
  box-shadow: 0 0 12px rgba(112, 210, 235, .75);
}
.travel-stars span:nth-child(1) { top: 17%; left: 22%; }
.travel-stars span:nth-child(2) { top: 27%; right: 19%; }
.travel-stars span:nth-child(3) { top: 64%; left: 13%; }
.travel-stars span:nth-child(4) { bottom: 19%; right: 28%; }
.travel-stars span:nth-child(5) { top: 12%; right: 36%; }
.travel-stars span:nth-child(6) { bottom: 29%; left: 36%; }
.travel-portal {
  position: absolute;
  top: 50%;
  left: 50%;
  width: min(51vmin, 540px);
  aspect-ratio: 1;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  pointer-events: none;
}
.travel-portal > span { position: absolute; display: block; border-radius: 50%; }
.portal-aura {
  inset: -23%;
  background: radial-gradient(circle, rgba(51, 168, 201, .13), rgba(26, 108, 143, .07) 36%, transparent 68%);
}
.portal-outer {
  inset: 0;
  border: 1px solid rgba(137, 218, 227, .23);
  box-shadow: 0 0 48px rgba(61, 182, 215, .055), inset 0 0 50px rgba(61, 182, 215, .045);
}
.portal-middle {
  inset: 15%;
  border: 1px solid rgba(156, 230, 220, .25);
  box-shadow: 0 0 34px rgba(161, 233, 194, .07);
}
.portal-inner {
  inset: 28%;
  border: 1px solid rgba(200, 243, 93, .35);
  box-shadow: 0 0 32px rgba(200, 243, 93, .11);
}
.portal-center {
  inset: 39%;
  border: 1px solid rgba(192, 240, 208, .28);
  background: radial-gradient(circle at 42% 40%, #226c83, #0d354a 53%, #071f31 100%);
  box-shadow: 0 0 50px rgba(74, 198, 222, .19);
}
.travel-copy {
  position: relative;
  z-index: 2;
  width: min(100% - 44px, 980px);
  text-align: center;
  text-shadow: 0 8px 45px rgba(1, 13, 27, .75);
}
.travel-kicker {
  margin: 0 0 28px;
  color: var(--lime);
  font-size: 10px;
  font-weight: 750;
  letter-spacing: .25em;
}
.travel-copy h2 {
  margin: 0;
  font-size: clamp(3rem, 6.5vw, 7rem);
  font-weight: 690;
  letter-spacing: -.065em;
  line-height: 1.04;
}
.travel-title-line { display: block; overflow: hidden; padding: 0 .06em; }
.travel-title-line > span { display: block; }
.travel-dot { color: var(--lime); }
.travel-subtitle {
  margin: 27px 0 0;
  color: #c5d7de;
  font-size: clamp(15px, 1.2vw, 18px);
  line-height: 1.5;
}
.travel-coordinate {
  position: absolute;
  bottom: 35px;
  left: clamp(25px, 5.25vw, 84px);
  color: #7996a7;
  font-size: 10px;
  font-weight: 750;
  letter-spacing: .19em;
}

.universe-section {
  position: relative;
  overflow: clip;
  min-height: 100svh;
  padding: clamp(95px, 11vw, 160px) clamp(25px, 5.25vw, 84px) 135px;
  background:
    radial-gradient(ellipse 49% 45% at 71% 60%, rgba(17, 89, 119, .15), transparent 76%),
    #071b2b;
  scroll-margin-top: 0;
}
.universe-section::before {
  content: "";
  position: absolute;
  top: 0;
  right: 5.25vw;
  left: 5.25vw;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(147, 216, 226, .23), transparent);
}
.universe-shell { width: min(100%, 1420px); margin: auto; }
.universe-heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 390px);
  align-items: end;
  gap: 45px;
}
.universe-kicker {
  display: flex;
  align-items: center;
  gap: 11px;
  margin: 0 0 25px;
  color: #a9c4d0;
  font-size: 10px;
  font-weight: 750;
  letter-spacing: .21em;
}
.universe-kicker span { width: 22px; height: 1px; background: var(--lime); }
.universe-heading h2 {
  margin: 0;
  font-size: clamp(4.5rem, 6.7vw, 7.6rem);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: -.075em;
}
.universe-heading h2 em { color: #98e1e8; font-style: normal; }
.universe-intro {
  max-width: 380px;
  margin: 0 0 10px;
  color: #abc1cd;
  font-size: 16px;
  line-height: 1.75;
}
.universe-stage {
  display: grid;
  grid-template-areas: "details system";
  grid-template-columns: minmax(290px, .72fr) minmax(0, 1.28fr);
  align-items: center;
  gap: clamp(20px, 4vw, 72px);
  margin-top: 62px;
}
.universe-system {
  position: relative;
  grid-area: system;
  min-width: 0;
  aspect-ratio: 760 / 620;
  background: radial-gradient(circle at 50% 50%, rgba(43, 139, 165, .075), transparent 62%);
}
.system-orbits { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.system-core {
  position: absolute;
  top: 50%;
  left: 50%;
  display: flex;
  width: 17%;
  aspect-ratio: 1;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  transform: translate(-50%, -50%);
  border: 1px solid rgba(129, 216, 231, .28);
  border-radius: 50%;
  background: radial-gradient(circle at 34% 24%, #194e64, #0b2b40 56%, #071d30);
  box-shadow: inset 0 0 25px rgba(107, 210, 228, .13), 0 0 52px rgba(56, 159, 194, .12);
}
.system-core img { width: 46%; height: auto; }
.system-core span { color: #d7ecf1; font-size: clamp(7px, .7vw, 10px); font-weight: 800; letter-spacing: .13em; }
.system-star {
  position: absolute;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: #c9ebed;
  box-shadow: 0 0 11px rgba(153, 225, 237, .75);
}
.system-star-a { top: 10%; left: 35%; }
.system-star-b { right: 19%; top: 32%; }
.system-star-c { left: 18%; bottom: 24%; }
.planet-track { position: absolute; inset: 0; }
.planet {
  position: absolute;
  z-index: 2;
  display: flex;
  width: clamp(138px, 15.4vw, 196px);
  flex-direction: column;
  align-items: center;
  gap: 18px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--white);
  text-align: center;
  cursor: pointer;
}
.planet-math { top: 9%; left: 5%; animation: planet-drift-a 96s ease-in-out infinite; }
.planet-language { right: 3%; bottom: 5%; animation: planet-drift-b 108s ease-in-out infinite; }
.universe-section .planet { animation-play-state: paused; }
.universe-section.is-visible .planet { animation-play-state: running; }
.planet-surface {
  position: relative;
  display: grid;
  width: 100%;
  aspect-ratio: 1;
  place-items: center;
  overflow: hidden;
  border: 1px solid rgba(173, 237, 219, .43);
  border-radius: 50%;
  background:
    radial-gradient(circle at 29% 24%, rgba(235, 255, 203, .38), transparent 22%),
    radial-gradient(circle at 69% 75%, rgba(20, 100, 91, .54), transparent 47%),
    linear-gradient(145deg, #5e9a66 0%, #356e6a 39%, #1b4b5c 75%, #112e4b 100%);
  box-shadow: inset -24px -29px 42px rgba(0, 19, 37, .5), inset 9px 9px 26px rgba(209, 255, 219, .13), 0 20px 55px rgba(0, 9, 22, .45), 0 0 48px rgba(175, 235, 94, .07);
  transition: border-color .35s ease, box-shadow .35s ease, transform .35s ease;
}
.planet-surface::after {
  content: "";
  position: absolute;
  inset: 20% -25%;
  transform: rotate(-21deg);
  border-top: 1px solid rgba(221, 255, 214, .17);
  border-bottom: 1px solid rgba(221, 255, 214, .13);
  border-radius: 50%;
}
.planet-language .planet-surface {
  border-color: rgba(138, 222, 240, .43);
  background:
    radial-gradient(circle at 28% 23%, rgba(202, 252, 255, .39), transparent 24%),
    radial-gradient(circle at 70% 76%, rgba(25, 86, 159, .55), transparent 46%),
    linear-gradient(145deg, #57b8ca 0%, #267d9f 41%, #164c7b 76%, #0b2b54 100%);
  box-shadow: inset -25px -30px 43px rgba(0, 15, 45, .56), inset 9px 9px 24px rgba(209, 255, 255, .15), 0 20px 55px rgba(0, 9, 22, .45), 0 0 48px rgba(74, 193, 232, .09);
}
.planet-mark {
  position: relative;
  z-index: 2;
  color: rgba(238, 255, 242, .65);
  font-family: Georgia, serif;
  font-size: clamp(41px, 5vw, 65px);
  font-weight: 400;
  text-shadow: 0 5px 23px rgba(0, 18, 30, .35);
}
.planet-identifier { display: grid; gap: 6px; opacity: .7; transition: opacity .3s ease, transform .3s ease; }
.planet-identifier small { color: #b5ced8; font-size: 9px; font-weight: 750; letter-spacing: .2em; }
.planet-identifier strong { color: #e6f3f4; font-size: 16px; font-weight: 700; letter-spacing: -.02em; }
.planet:hover .planet-surface,
.planet:focus-visible .planet-surface,
.planet.is-active .planet-surface,
.planet.is-previewed .planet-surface {
  transform: scale(1.055);
  border-color: rgba(216, 253, 190, .8);
  box-shadow: inset -24px -29px 42px rgba(0, 19, 37, .5), inset 9px 9px 26px rgba(209, 255, 219, .13), 0 23px 60px rgba(0, 9, 22, .5), 0 0 64px rgba(175, 235, 94, .22);
}
.planet-language:hover .planet-surface,
.planet-language:focus-visible .planet-surface,
.planet-language.is-active .planet-surface,
.planet-language.is-previewed .planet-surface {
  border-color: rgba(176, 237, 249, .86);
  box-shadow: inset -25px -30px 43px rgba(0, 15, 45, .56), inset 9px 9px 24px rgba(209, 255, 255, .15), 0 23px 60px rgba(0, 9, 22, .5), 0 0 64px rgba(74, 193, 232, .28);
}
.planet:hover .planet-identifier,
.planet:focus-visible .planet-identifier,
.planet.is-active .planet-identifier,
.planet.is-previewed .planet-identifier { opacity: 1; transform: translateY(3px); }
.planet:focus-visible { outline: 2px solid var(--lime); outline-offset: 14px; border-radius: 12px; }
.system-caption {
  position: absolute;
  right: 4%;
  bottom: 0;
  color: #7898a9;
  font-size: 9px;
  font-weight: 750;
  letter-spacing: .18em;
}
.planet-details {
  grid-area: details;
  max-width: 440px;
  padding-left: clamp(0px, 2vw, 28px);
}
.details-topline {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #9db8c6;
  font-size: 9px;
  font-weight: 750;
  letter-spacing: .17em;
  white-space: nowrap;
}
.details-topline::after { content: ""; width: 44px; height: 1px; background: rgba(141, 207, 220, .39); }
.details-topline span:first-child { color: var(--lime); }
.planet-details h3 {
  margin: 25px 0 45px;
  font-size: clamp(3.2rem, 4.5vw, 5rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.065em;
}
.detail-label { margin: 0 0 12px; color: var(--lime); font-size: 10px; font-weight: 800; letter-spacing: .21em; }
.detail-skill {
  min-height: 80px;
  margin: 0;
  color: #e8f4f5;
  font-size: clamp(22px, 2vw, 28px);
  font-weight: 610;
  line-height: 1.3;
  letter-spacing: -.035em;
}
.detail-description { min-height: 82px; margin: 20px 0 37px; color: #9eb9c7; font-size: 14px; line-height: 1.7; }
.detail-progress-heading { display: flex; justify-content: space-between; gap: 15px; color: #c1d6dc; font-size: 12px; font-weight: 680; }
.detail-progress-heading strong { color: var(--lime); font-size: 15px; }
.detail-progress { height: 4px; margin-top: 13px; overflow: hidden; background: rgba(142, 196, 210, .2); }
.detail-progress span { display: block; height: 100%; background: linear-gradient(90deg, #55cee4, var(--lime)); transition: width .55s ease; }
.detail-disclaimer { margin: 12px 0 0; color: #8ba6b4; font-size: 11px; line-height: 1.5; }
.mobile-swipe-hint { display: none; }

@keyframes planet-drift-a {
  0%, 100% { transform: translate3d(0, 0, 0); }
  25% { transform: translate3d(3px, -2px, 0); }
  50% { transform: translate3d(0, -4px, 0); }
  75% { transform: translate3d(-3px, -2px, 0); }
}
@keyframes planet-drift-b {
  0%, 100% { transform: translate3d(0, 0, 0); }
  25% { transform: translate3d(-3px, 2px, 0); }
  50% { transform: translate3d(0, 4px, 0); }
  75% { transform: translate3d(3px, 2px, 0); }
}

@keyframes scroll-pulse {
  0%, 100% { transform: translate(-50%, 0); opacity: .45; }
  50% { transform: translate(-50%, 11px); opacity: 1; }
}

@media (hover: hover) and (pointer: fine) {
  .scene-parallax { will-change: transform; }
}

@media (max-width: 1270px) {
  .hero-inner { grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr); }
  h1 { font-size: clamp(3.8rem, 6.2vw, 5.7rem); }
  .hero-visual { width: 55vw; height: 55vw; min-width: 480px; min-height: 480px; margin-left: -55px; }
  .orbit-label-three { right: -4%; }
  .universe-stage { grid-template-columns: minmax(270px, .75fr) minmax(0, 1.25fr); gap: 24px; }
  .planet { width: clamp(130px, 14.5vw, 177px); }
}

@media (max-width: 900px) {
  .site-header { grid-template-columns: 1fr auto; min-height: 82px; padding-top: 17px; padding-bottom: 17px; }
  .desktop-nav { display: none; }
  .brand img { width: 181px; }
  .hero { min-height: auto; }
  .hero-inner {
    min-height: auto;
    grid-template-columns: 1fr;
    padding-top: 85px;
    padding-bottom: 105px;
  }
  h1 { font-size: clamp(4.2rem, 9.1vw, 6.3rem); }
  .hero-description { max-width: 570px; }
  .hero-visual {
    justify-self: center;
    width: min(78vw, 680px);
    height: min(78vw, 680px);
    min-width: 0;
    min-height: 0;
    margin: 25px 0 -20px;
  }
  .hero-bottom { bottom: 25px; }
  .travel { min-height: auto; }
  .travel-stage { min-height: max(620px, 78svh); }
  .travel-portal { width: min(57vmin, 430px); }
  .travel-copy h2 { font-size: clamp(3.3rem, 8vw, 5.6rem); }
  .universe-section { padding-top: 100px; padding-bottom: 105px; }
  .universe-heading { grid-template-columns: 1fr; gap: 25px; }
  .universe-heading h2 { font-size: clamp(4.5rem, 9vw, 6.5rem); }
  .universe-intro { max-width: 600px; }
  .universe-stage { grid-template-areas: "system" "details"; grid-template-columns: 1fr; gap: 45px; margin-top: 40px; }
  .universe-system { width: min(100%, 700px); margin: auto; }
  .planet { width: clamp(142px, 20vw, 180px); }
  .planet-details { max-width: 600px; padding-left: 0; }
  .detail-skill, .detail-description { min-height: 0; }
}

@media (max-width: 600px) {
  .site-header {
    min-height: 76px;
    padding: 15px 21px;
  }
  .brand img { width: 157px; }
  .header-access { display: none; }
  .menu-toggle {
    justify-self: end;
    display: flex;
    width: 44px;
    height: 44px;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    border: 1px solid rgba(181, 230, 238, .34);
    border-radius: 50%;
    background: rgba(255, 255, 255, .025);
    color: var(--white);
    cursor: pointer;
  }
  .menu-toggle span { width: 17px; height: 1.5px; background: currentColor; transition: transform .25s ease; }
  .menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(3.75px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-3.75px) rotate(-45deg); }
  .mobile-nav:not([hidden]) {
    position: absolute;
    top: calc(100% + 1px);
    right: 16px;
    left: 16px;
    display: grid;
    padding: 15px 21px;
    border: 1px solid rgba(181, 230, 238, .18);
    border-radius: 18px;
    background: #102638;
    box-shadow: 0 22px 70px rgba(0, 6, 14, .48);
  }
  .mobile-nav a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 53px;
    border-bottom: 1px solid rgba(181, 230, 238, .1);
    color: var(--white);
    text-decoration: none;
    font-size: 15px;
    font-weight: 700;
  }
  .mobile-nav a:last-child { border-bottom: 0; color: var(--lime); }
  .mobile-nav a span { color: #7da2b3; font-size: 10px; letter-spacing: .1em; }
  .hero-grid { background-size: 64px 64px; opacity: .22; }
  .hero-inner { padding: 74px 22px 104px; }
  .eyebrow { gap: 10px; max-width: 340px; margin-bottom: 28px; font-size: 9px; letter-spacing: .16em; }
  .eyebrow-signal { width: 16px; }
  h1 { font-size: clamp(2.65rem, 10.65vw, 4rem); line-height: 1.035; letter-spacing: -.071em; }
  .title-row { padding-right: .08em; }
  .hero-description { max-width: 430px; margin-top: 27px; font-size: 15px; line-height: 1.65; }
  .hero-actions { gap: 12px 23px; margin-top: 26px; }
  .button-primary { min-height: 54px; padding-left: 20px; font-size: 13px; }
  .button-icon { width: 38px; height: 38px; }
  .button-text { font-size: 13px; }
  .hero-visual {
    width: min(106vw, 500px);
    height: min(106vw, 500px);
    margin: 30px -4vw 0;
  }
  .orbit-label { font-size: 8px; letter-spacing: .05em; }
  .orbit-label-one { top: 14%; right: 4%; }
  .orbit-label-two { top: 66%; left: 4%; }
  .orbit-label-three { right: 0; bottom: 15%; }
  .orbit-label b { margin-left: 3px; }
  .scene-caption { right: 9%; bottom: -7px; font-size: 8px; }
  .hero-bottom { right: 22px; bottom: 23px; left: 22px; }
  .hero-coordinate { display: none; }
  .travel-stage { min-height: max(520px, 75svh); }
  .travel-portal { width: min(73vmin, 360px); }
  .travel-kicker { margin-bottom: 21px; font-size: 8px; letter-spacing: .18em; }
  .travel-copy h2 { font-size: clamp(2.65rem, 10vw, 4rem); line-height: 1.06; }
  .travel-subtitle { max-width: 310px; margin: 21px auto 0; font-size: 14px; }
  .travel-coordinate { bottom: 24px; left: 22px; font-size: 8px; }
  .universe-section { padding: 89px 22px 90px; }
  .universe-kicker { margin-bottom: 21px; font-size: 9px; letter-spacing: .16em; }
  .universe-heading h2 { font-size: clamp(3.35rem, 10.2vw, 4.6rem); }
  .universe-intro { margin: 0; font-size: 15px; line-height: 1.65; }
  .universe-stage { gap: 20px; margin-top: 33px; }
  .universe-system { width: 100%; min-height: 292px; aspect-ratio: auto; background: none; }
  .system-orbits, .system-core, .system-star, .system-caption { display: none; }
  .planet-track {
    position: relative;
    inset: auto;
    display: flex;
    width: calc(100% + 44px);
    gap: 10px;
    margin-left: -22px;
    padding: 4px 22px 26px;
    overflow-x: auto;
    overscroll-behavior-x: contain;
    scroll-snap-type: x mandatory;
    scroll-padding-inline: 22px;
    scrollbar-width: none;
  }
  .planet-track::-webkit-scrollbar { display: none; }
  .planet {
    position: relative;
    top: auto;
    right: auto;
    bottom: auto;
    left: auto;
    flex: 0 0 min(73vw, 260px);
    width: min(73vw, 260px);
    min-height: 263px;
    padding: 20px 12px 14px;
    gap: 16px;
    animation: none;
    scroll-snap-align: start;
    background: radial-gradient(ellipse at 50% 42%, rgba(43, 139, 165, .12), transparent 68%);
  }
  .planet-surface { width: 150px; }
  .planet-mark { font-size: 54px; }
  .planet-identifier { opacity: 1; }
  .planet-identifier strong { font-size: 17px; }
  .planet-details { padding: 12px 0 0; }
  .planet-details h3 { margin: 19px 0 30px; font-size: 3.7rem; }
  .detail-skill { font-size: 24px; }
  .detail-description { margin: 16px 0 30px; }
  .mobile-swipe-hint { display: block; margin: 31px 0 0; color: #8babb8; font-size: 9px; font-weight: 750; letter-spacing: .18em; }
  .mobile-swipe-hint span { margin-left: 5px; color: var(--lime); }
}

@media (max-width: 390px) {
  .hero-inner { padding-top: 62px; }
  h1 { font-size: 10.2vw; }
  .hero-visual { margin-top: 18px; }
  .orbit-label-three { display: none; }
  .universe-heading h2 { font-size: clamp(2.8rem, 12vw, 3.35rem); }
  .planet-details h3 { font-size: 3.15rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}