:root {
  --black: #030303;
  --ink: #080b0e;
  --paper: #f3f5f2;
  --white: #f5f5f3;
  --muted: rgba(245, 245, 243, 0.58);
  --line: rgba(255, 255, 255, 0.18);
  --accent: #f5f5f3;
  --gutter: clamp(24px, 5.4vw, 92px);
  --content: 1440px;
  --header-h: 72px;
  --mono: "SFMono-Regular", "Cascadia Mono", Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}

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

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

body {
  margin: 0;
  overflow-x: hidden;
  background: var(--black);
  color: var(--white);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

button,
a,
input {
  font: inherit;
}

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

button {
  color: inherit;
}

canvas {
  display: block;
}

::selection {
  background: rgba(125, 220, 255, 0.92);
  color: #020303;
}

.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;
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  height: var(--header-h);
  color: #fff;
  transition: background 260ms ease, border-color 260ms ease, backdrop-filter 260ms ease;
}

.site-header.scrolled {
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(3, 3, 3, 0.82);
  backdrop-filter: blur(18px);
}

.site-progress {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 1px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.04);
}

.site-progress i {
  display: block;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.76);
  transform: scaleX(var(--page-progress, 0));
  transform-origin: left center;
  will-change: transform;
}

.scene-rail {
  position: fixed;
  top: 50%;
  right: 18px;
  z-index: 92;
  display: flex;
  flex-direction: column;
  gap: 5px;
  color: #fff;
  transform: translateY(-50%);
  mix-blend-mode: difference;
}

.scene-rail a {
  display: grid;
  grid-template-columns: 18px 18px;
  gap: 7px;
  align-items: center;
  min-height: 20px;
  color: rgba(255, 255, 255, 0.28);
  font-family: var(--mono);
  font-size: 7px;
  transition: color 240ms ease;
}

.scene-rail i {
  display: block;
  width: 7px;
  height: 1px;
  justify-self: end;
  background: currentColor;
  transition: width 320ms cubic-bezier(0.2, 0.75, 0.2, 1);
}

.scene-rail a.is-active { color: #fff; }
.scene-rail a.is-active i { width: 18px; }

.signal-cursor {
  --cursor-x: -100px;
  --cursor-y: -100px;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 999;
  display: none;
  pointer-events: none;
  opacity: 0;
  transform: translate3d(var(--cursor-x), var(--cursor-y), 0);
  transition: opacity 180ms ease;
  mix-blend-mode: difference;
}

.signal-cursor i {
  position: absolute;
  top: -15px;
  left: -15px;
  width: 30px;
  height: 30px;
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 50%;
  transition: width 220ms ease, height 220ms ease, top 220ms ease, left 220ms ease, background 220ms ease;
}

.signal-cursor i::before,
.signal-cursor i::after {
  position: absolute;
  top: 50%;
  left: 50%;
  background: #fff;
  content: "";
  transform: translate(-50%, -50%);
}

.signal-cursor i::before { width: 5px; height: 1px; }
.signal-cursor i::after { width: 1px; height: 5px; }

.signal-cursor span {
  position: absolute;
  top: 21px;
  left: 21px;
  color: #fff;
  font-family: var(--mono);
  font-size: 7px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  white-space: nowrap;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 180ms ease, transform 180ms ease;
}

.signal-cursor.is-visible { opacity: 1; }

.signal-cursor.is-active i {
  top: -23px;
  left: -23px;
  width: 46px;
  height: 46px;
  background: rgba(255, 255, 255, 0.08);
}

.signal-cursor.is-active span {
  opacity: 1;
  transform: translateY(0);
}

@media (pointer: fine) {
  .signal-cursor { display: block; }
  body.has-signal-cursor,
  body.has-signal-cursor a,
  body.has-signal-cursor button,
  body.has-signal-cursor input { cursor: none; }
}

.header-inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  width: min(calc(100% - (2 * var(--gutter))), var(--content));
  height: 100%;
  margin: 0 auto;
}

.wordmark {
  display: inline-flex;
  gap: 10px;
  align-items: center;
  width: fit-content;
  font-size: 14px;
  font-weight: 650;
  letter-spacing: -0.025em;
}

.brand-symbol {
  width: 24px;
  height: 24px;
  overflow: visible;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.25;
}

.primary-nav {
  display: flex;
  gap: 38px;
  justify-self: start;
  margin-left: 76px;
}

.primary-nav a {
  color: rgba(255, 255, 255, 0.5);
  font-size: 9px;
  font-weight: 650;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  transition: color 180ms ease;
}

.primary-nav a:hover,
.primary-nav a:focus-visible {
  color: #fff;
}

.header-cta {
  grid-column: 3;
  justify-self: end;
  display: inline-flex;
  gap: 16px;
  align-items: center;
  justify-content: center;
  min-width: 132px;
  height: 42px;
  padding: 0 17px;
  border-radius: 11px;
  background: #f5f5f3;
  color: #080808;
  font-size: 11px;
  font-weight: 650;
  transition: background 180ms ease, transform 180ms ease;
}

.header-cta:hover {
  background: #fff;
  transform: translateY(-1px);
}

.header-cta svg,
.button svg,
.outline-action svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.35;
  transition: transform 180ms ease;
}

.header-cta:hover svg,
.button:hover svg,
.outline-action:hover svg {
  transform: translateX(4px);
}

/* 01 — ORBIT */
.orbit {
  --hero-scale: 1;
  --hero-copy-shift: 0px;
  --hero-copy-opacity: 1;
  --planet-x: 0px;
  --planet-y: 0px;
  --planet-rx: 0deg;
  --planet-ry: 0deg;
  position: relative;
  min-height: 820px;
  height: 100svh;
  overflow: hidden;
  background: #030303;
  isolation: isolate;
}

.orbit::before {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse at 72% 19%, rgba(95, 168, 206, 0.12), transparent 23%),
    radial-gradient(ellipse at 76% 21%, rgba(127, 94, 201, 0.08), transparent 32%);
  content: "";
  opacity: 0.8;
  animation: aurora-breathe 7s ease-in-out infinite alternate;
}

.stars {
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: 0.3;
  background-image:
    radial-gradient(circle at 8% 29%, rgba(255, 255, 255, 0.8) 0 0.45px, transparent 0.8px),
    radial-gradient(circle at 31% 78%, rgba(255, 255, 255, 0.38) 0 0.35px, transparent 0.7px),
    radial-gradient(circle at 54% 14%, rgba(255, 255, 255, 0.45) 0 0.4px, transparent 0.8px),
    radial-gradient(circle at 86% 34%, rgba(175, 220, 238, 0.42) 0 0.4px, transparent 0.75px),
    radial-gradient(circle at 74% 84%, rgba(255, 255, 255, 0.38) 0 0.35px, transparent 0.7px);
  background-size: 320px 310px, 410px 370px, 480px 430px, 360px 390px, 540px 470px;
}

.space-field {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.86;
}

.hero-signal {
  position: absolute;
  top: 24%;
  left: 62%;
  z-index: 4;
  width: 1px;
  height: 1px;
  pointer-events: none;
}

.hero-signal i {
  position: absolute;
  top: -4px;
  left: -4px;
  width: 9px;
  height: 9px;
  border: 1px solid rgba(222, 245, 255, 0.9);
  border-radius: 50%;
  box-shadow: 0 0 24px rgba(165, 222, 255, 0.65);
  animation: signal-pulse 2.8s ease-in-out infinite;
}

.hero-signal span {
  position: absolute;
  top: -1px;
  left: 0;
  width: min(36vw, 620px);
  height: 2px;
  background: linear-gradient(90deg, rgba(223, 247, 255, 0.86), rgba(140, 194, 235, 0.16) 56%, transparent);
  filter: drop-shadow(0 0 12px rgba(150, 211, 255, 0.72));
  transform-origin: left center;
  animation: signal-sweep 4.8s ease-in-out infinite;
}

.hero-grid {
  position: relative;
  z-index: 6;
  width: min(calc(100% - (2 * var(--gutter))), var(--content));
  height: 100%;
  margin: 0 auto;
}

.hero-copy {
  position: absolute;
  top: auto;
  bottom: clamp(118px, 15vh, 158px);
  left: 0;
  width: min(670px, 47vw);
  opacity: var(--hero-copy-opacity);
  transform: translateY(calc(0px - var(--hero-copy-shift)));
  animation: hero-copy-in 980ms 120ms cubic-bezier(0.2, 0.75, 0.2, 1) both;
}

.hero-eyebrow,
.descent-copy > p,
.poster-copy > p,
.missions-intro > p,
.method-lead > p:first-child {
  display: flex;
  gap: 14px;
  align-items: center;
  margin: 0 0 31px;
  color: rgba(255, 255, 255, 0.56);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.hero-eyebrow i,
.descent-copy > p i,
.poster-copy > p i {
  width: 32px;
  height: 1px;
  background: currentColor;
  opacity: 0.5;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin: 0;
  font-size: clamp(74px, 6.8vw, 116px);
  font-weight: 500;
  letter-spacing: -0.07em;
  line-height: 0.89;
}

h1 span {
  display: block;
  width: max-content;
  white-space: nowrap;
  clip-path: inset(0 0 100% 0);
  animation: hero-line-in 1050ms 260ms cubic-bezier(0.16, 0.84, 0.22, 1) forwards;
}

h1 span:last-child {
  color: rgba(255, 255, 255, 0.54);
  animation-delay: 390ms;
}

.hero-intro {
  max-width: 500px;
  margin: 41px 0 0;
  color: rgba(255, 255, 255, 0.58);
  font-size: clamp(15px, 1.12vw, 18px);
  letter-spacing: -0.02em;
  line-height: 1.54;
}

.hero-actions,
.return-actions {
  display: flex;
  gap: 12px;
  align-items: center;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  gap: 34px;
  align-items: center;
  justify-content: space-between;
  min-height: 52px;
  padding: 0 19px 0 22px;
  border-radius: 3px;
  font-size: 12px;
  font-weight: 620;
  transition: background 180ms ease, color 180ms ease, border-color 180ms ease, transform 180ms ease;
}

.hero-telemetry {
  position: absolute;
  right: var(--gutter);
  bottom: 29px;
  left: var(--gutter);
  z-index: 7;
  display: grid;
  grid-template-columns: repeat(4, minmax(110px, 1fr));
  width: min(calc(100% - (2 * var(--gutter))), var(--content));
  margin: 0 auto;
  padding-right: 195px;
  opacity: 0;
  animation: telemetry-in 850ms 980ms ease forwards;
}

.hero-telemetry > div {
  display: flex;
  gap: 11px;
  align-items: center;
  min-height: 27px;
  padding: 0 20px;
  border-left: 1px solid rgba(255, 255, 255, 0.16);
  font-family: var(--mono);
  font-size: 7px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero-telemetry > div:first-child { padding-left: 0; border-left: 0; }

.hero-telemetry span { color: rgba(255, 255, 255, 0.31); }

.hero-telemetry strong {
  color: rgba(255, 255, 255, 0.76);
  font-weight: 500;
  white-space: nowrap;
}

.hero-telemetry strong i {
  display: inline-block;
  width: 5px;
  height: 5px;
  margin-right: 5px;
  border-radius: 50%;
  background: #c9f5d2;
  box-shadow: 0 0 9px rgba(169, 245, 185, 0.7);
  animation: status-blink 1.8s ease-in-out infinite;
}

.button-primary {
  min-width: 232px;
  background: #f5f5f3;
  color: #080808;
}

.button-primary:hover {
  background: #fff;
  transform: translateY(-1px);
}

.button-secondary {
  min-width: 178px;
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: rgba(255, 255, 255, 0.78);
}

.button-secondary:hover {
  border-color: rgba(255, 255, 255, 0.75);
  color: #fff;
}

.hero-planet {
  position: absolute;
  right: clamp(-260px, -11vw, -130px);
  bottom: clamp(-620px, -33vw, -510px);
  z-index: 2;
  width: min(78vw, 1320px);
  aspect-ratio: 1;
  transform: translate3d(var(--planet-x), var(--planet-y), 0) rotateX(var(--planet-rx)) rotateY(var(--planet-ry)) scale(var(--hero-scale));
  transform-origin: 50% 58%;
  transition: transform 450ms cubic-bezier(0.2, 0.75, 0.2, 1);
  will-change: transform;
}

.hero-planet-shell,
.return-planet-shell {
  position: absolute;
  inset: 3.2%;
  overflow: hidden;
  border-radius: 50%;
}

.hero-planet-shell {
  opacity: 0;
  box-shadow:
    -11px -4px 27px rgba(168, 229, 255, 0.18),
    -2px -1px 4px rgba(231, 249, 255, 0.7),
    inset 42px 18px 90px rgba(0, 0, 0, 0.18);
  transform: scale(0.985);
}

.orbit.planet-ready .hero-planet-shell {
  animation: planet-in 1450ms 80ms cubic-bezier(0.2, 0.75, 0.2, 1) forwards;
}

.planet {
  width: 100%;
  height: 100%;
  border-radius: 50%;
}

.planet-primary {
  filter: saturate(0.76) contrast(1.2) brightness(0.78);
  transform: scale(1.01);
}

.orbit-arc {
  position: absolute;
  inset: -1.2%;
  border: 1px solid rgba(187, 235, 255, 0.12);
  border-radius: 50%;
  transform: rotate(-13deg) scaleY(0.94);
}

.baku-target {
  position: absolute;
  top: 44%;
  left: 31%;
  z-index: 4;
  width: 175px;
  height: 70px;
  color: rgba(237, 249, 252, 0.9);
  opacity: 0;
  animation: target-in 700ms 1250ms ease forwards;
}

.target-axis {
  position: absolute;
  background: rgba(255, 255, 255, 0.5);
}

.target-axis-x {
  top: 25px;
  left: 1px;
  width: 44px;
  height: 1px;
}

.target-axis-y {
  top: 4px;
  left: 22px;
  width: 1px;
  height: 44px;
}

.target-ring {
  position: absolute;
  top: 12px;
  left: 9px;
  display: grid;
  width: 27px;
  height: 27px;
  border: 1px solid rgba(255, 255, 255, 0.78);
  border-radius: 50%;
  place-items: center;
}

.target-ring i {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: #fff;
}

.target-label {
  position: absolute;
  top: 14px;
  left: 52px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-family: var(--mono);
  line-height: 1;
}

.target-label b {
  font-size: 9px;
  letter-spacing: 0.22em;
}

.target-label small {
  color: rgba(255, 255, 255, 0.48);
  font-size: 7px;
  letter-spacing: 0.18em;
}

.scroll-cue {
  position: absolute;
  right: var(--gutter);
  bottom: 30px;
  z-index: 8;
  display: flex;
  gap: 12px;
  align-items: center;
  color: rgba(255, 255, 255, 0.44);
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.scroll-cue svg {
  width: 14px;
  height: 22px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1;
  animation: cue-down 1800ms ease-in-out infinite;
}

@keyframes hero-copy-in {
  from { opacity: 0; transform: translateY(28px); }
}

@keyframes hero-line-in {
  from { clip-path: inset(0 0 100% 0); transform: translateY(24px); }
  to { clip-path: inset(0); transform: translateY(0); }
}

@keyframes telemetry-in {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes aurora-breathe {
  from { opacity: 0.48; transform: scale(0.94) translate3d(1%, -1%, 0); }
  to { opacity: 0.9; transform: scale(1.08) translate3d(-1%, 1%, 0); }
}

@keyframes signal-pulse {
  0%, 100% { opacity: 0.3; transform: scale(0.62); }
  45% { opacity: 1; transform: scale(1); }
  70% { opacity: 0.55; transform: scale(1.8); }
}

@keyframes signal-sweep {
  0%, 100% { opacity: 0.16; transform: rotate(-12deg) scaleX(0.2); }
  25%, 78% { opacity: 0.92; }
  50% { transform: rotate(9deg) scaleX(1); }
}

@keyframes status-blink {
  0%, 100% { opacity: 0.36; }
  50% { opacity: 1; }
}

@keyframes planet-in {
  to { opacity: 1; transform: scale(1); }
}

@keyframes target-in {
  from { opacity: 0; transform: scale(0.92); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes cue-down {
  0%, 100% { transform: translateY(0); opacity: 0.45; }
  50% { transform: translateY(5px); opacity: 1; }
}

/* 02 — DESCENT */
.descent {
  position: relative;
  height: 100svh;
  min-height: 760px;
  overflow: hidden;
  background: #1b211c;
}

.descent::before,
.comparison::before,
.investigation-stage::before,
.mission-poster::before {
  position: absolute;
  top: 0;
  bottom: 0;
  left: -14%;
  z-index: 4;
  width: 9%;
  pointer-events: none;
  background: linear-gradient(90deg, transparent, rgba(219, 245, 255, 0.08), transparent);
  content: "";
  transform: skewX(-9deg);
  animation: field-scan 9s 1.2s cubic-bezier(0.35, 0, 0.2, 1) infinite;
}

.comparison::before { z-index: 5; animation-delay: 2.2s; }
.investigation-stage::before { animation-delay: 3.1s; }
.mission-poster::before { animation-delay: var(--scan-delay, 1.6s); }
.mission-two { --scan-delay: 3.4s; }
.mission-three { --scan-delay: 5.1s; }

@keyframes field-scan {
  0%, 20% { opacity: 0; transform: translateX(0) skewX(-9deg); }
  28% { opacity: 1; }
  64% { opacity: 0.55; }
  74%, 100% { opacity: 0; transform: translateX(1320%) skewX(-9deg); }
}

.descent-image,
.investigation-stage > canvas,
.mission-poster > canvas,
.comparison-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.descent-image {
  inset: -5%;
  width: 110%;
  height: 110%;
  filter: saturate(0.82) contrast(1.18) brightness(0.68);
  transform: translate3d(0, var(--descent-shift, 0px), 0) scale(1.06);
  will-change: transform;
}

.descent-vignette {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(0, 0, 0, 0.82) 0%, rgba(0, 0, 0, 0.28) 47%, rgba(0, 0, 0, 0.16) 100%),
    linear-gradient(180deg, rgba(0, 0, 0, 0.22), transparent 42%, rgba(0, 0, 0, 0.48));
}

.scan-frame {
  position: absolute;
  top: 13vh;
  right: 6vw;
  width: min(38vw, 590px);
  height: 51vh;
  min-height: 370px;
  opacity: 0.7;
}

.scan-frame span {
  position: absolute;
  width: 44px;
  height: 44px;
  border-color: rgba(255, 255, 255, 0.74);
  border-style: solid;
}

.scan-frame span:nth-child(1) { top: 0; left: 0; border-width: 1px 0 0 1px; }
.scan-frame span:nth-child(2) { top: 0; right: 0; border-width: 1px 1px 0 0; }
.scan-frame span:nth-child(3) { right: 0; bottom: 0; border-width: 0 1px 1px 0; }
.scan-frame span:nth-child(4) { bottom: 0; left: 0; border-width: 0 0 1px 1px; }

.scan-frame > i {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 1px;
  background: rgba(255, 255, 255, 0.45);
  box-shadow: 0 0 18px rgba(255, 255, 255, 0.12);
  animation: scan 5s ease-in-out infinite;
}

@keyframes scan {
  0%, 100% { transform: translateY(16px); opacity: 0; }
  15%, 85% { opacity: 1; }
  50% { transform: translateY(45vh); }
}

.descent-copy {
  position: absolute;
  bottom: clamp(52px, 8vh, 88px);
  left: var(--gutter);
  z-index: 4;
  width: min(960px, calc(100% - (2 * var(--gutter))));
}

.descent-copy h2 {
  margin: 0;
  font-size: clamp(56px, 6.7vw, 108px);
  font-weight: 720;
  letter-spacing: -0.06em;
  line-height: 0.86;
  text-transform: uppercase;
}

.outline-action {
  display: inline-flex;
  gap: 32px;
  align-items: center;
  justify-content: space-between;
  min-width: 205px;
  height: 52px;
  margin-top: 32px;
  padding: 0 18px;
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-radius: 3px;
  color: #fff;
  font-size: 10px;
  font-weight: 650;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  transition: background 190ms ease, color 190ms ease, border-color 190ms ease;
}

.outline-action:hover {
  border-color: #fff;
  background: #fff;
  color: #050505;
}

/* 03 — EVIDENCE */
.evidence {
  position: relative;
  background: #050505;
}

.evidence-heading {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 67svh;
  overflow: hidden;
  padding: 0 var(--gutter) clamp(75px, 9vh, 110px);
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.026) 1px, transparent 1px) 0 0 / 11vw 100%,
    radial-gradient(circle at 82% 58%, rgba(54, 73, 63, 0.24), transparent 31%);
}

.evidence-heading::before {
  position: absolute;
  right: -7vw;
  bottom: -29vw;
  width: min(59vw, 900px);
  aspect-ratio: 1;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 50%;
  content: "";
  box-shadow:
    0 0 0 4.6vw rgba(255, 255, 255, 0.025),
    0 0 0 9.2vw rgba(255, 255, 255, 0.018);
}

.evidence-heading::after {
  position: absolute;
  top: 13vh;
  right: var(--gutter);
  color: rgba(255, 255, 255, 0.34);
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.17em;
  text-transform: uppercase;
  content: "03 / Evidence";
}

.evidence-heading h2 {
  position: relative;
  z-index: 2;
  max-width: 930px;
  margin: 0;
  font-size: clamp(60px, 7vw, 112px);
  font-weight: 500;
  letter-spacing: -0.072em;
  line-height: 0.88;
}

.evidence-heading > p {
  position: relative;
  z-index: 2;
  margin: 32px 0 0;
  color: rgba(255, 255, 255, 0.5);
  font-size: clamp(16px, 1.22vw, 20px);
  letter-spacing: -0.02em;
}

.comparison {
  --split: 50%;
  position: relative;
  width: 100%;
  height: 100svh;
  min-height: 720px;
  overflow: hidden;
  background: #30382e;
}

.comparison-image {
  filter: saturate(0.88) contrast(1.1) brightness(0.82);
}

.comparison-before {
  z-index: 1;
}

.comparison-after {
  z-index: 2;
  clip-path: inset(0 0 0 var(--split));
}

.comparison-shade {
  position: absolute;
  inset: 0;
  z-index: 3;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(0, 0, 0, 0.48), transparent 24%, transparent 64%, rgba(0, 0, 0, 0.62)),
    linear-gradient(90deg, rgba(0, 0, 0, 0.2), transparent 26%, transparent 74%, rgba(0, 0, 0, 0.18));
}

.archive-label,
.comparison-location,
.source-hook {
  position: absolute;
  z-index: 6;
  font-family: var(--mono);
  text-transform: uppercase;
}

.archive-label {
  top: 30px;
  display: flex;
  flex-direction: column;
  gap: 7px;
  font-size: 8px;
  letter-spacing: 0.18em;
}

.archive-label small {
  color: rgba(255, 255, 255, 0.52);
  font-size: 7px;
  letter-spacing: 0.12em;
}

.archive-label-before { left: var(--gutter); }
.archive-label-after { right: var(--gutter); text-align: right; }

.comparison-location {
  top: 33px;
  left: 50%;
  margin: 0;
  color: rgba(255, 255, 255, 0.68);
  font-size: 8px;
  letter-spacing: 0.18em;
  transform: translateX(-50%);
}

.comparison-location span { color: rgba(255, 255, 255, 0.32); }

.source-hook {
  right: var(--gutter);
  bottom: 24px;
  margin: 0;
  color: rgba(255, 255, 255, 0.42);
  font-size: 7px;
  letter-spacing: 0.13em;
}

.comparison-divider {
  position: absolute;
  top: 0;
  bottom: 0;
  left: var(--split);
  z-index: 8;
  width: 1px;
  background: rgba(255, 255, 255, 0.82);
  transform: translateX(-0.5px);
  pointer-events: none;
}

.divider-handle {
  position: absolute;
  top: 50%;
  left: 50%;
  display: grid;
  width: 48px;
  height: 48px;
  border: 1px solid rgba(255, 255, 255, 0.88);
  border-radius: 50%;
  background: rgba(5, 5, 5, 0.74);
  box-shadow: 0 0 0 7px rgba(0, 0, 0, 0.2);
  place-items: center;
  transform: translate(-50%, -50%);
  backdrop-filter: blur(8px);
}

.divider-handle svg {
  width: 26px;
  height: 26px;
  fill: none;
  stroke: #fff;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.2;
}

.comparison-control {
  position: absolute;
  inset: 0;
  z-index: 10;
}

.comparison-range {
  width: 100%;
  height: 100%;
  margin: 0;
  cursor: ew-resize;
  opacity: 0;
}

.evidence-prompt {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 11;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 48px;
  align-items: end;
  padding: 180px var(--gutter) 48px;
  pointer-events: none;
  opacity: 0;
  background: linear-gradient(180deg, transparent, rgba(0, 0, 0, 0.82) 44%, rgba(0, 0, 0, 0.96));
  transform: translateY(30px);
  transition: opacity 600ms ease, transform 600ms cubic-bezier(0.2, 0.75, 0.2, 1);
}

.comparison.engaged .evidence-prompt {
  pointer-events: auto;
  opacity: 1;
  transform: translateY(0);
}

.prompt-copy > p {
  margin: 0 0 12px;
  color: rgba(255, 255, 255, 0.5);
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.prompt-copy h3 {
  margin: 0;
  font-size: clamp(44px, 4.5vw, 70px);
  font-weight: 520;
  letter-spacing: -0.06em;
  line-height: 0.94;
}

.prompt-actions {
  display: flex;
  gap: 8px;
  max-width: 610px;
  padding-bottom: 3px;
}

.prompt-actions button {
  min-height: 44px;
  padding: 0 17px;
  border: 1px solid rgba(255, 255, 255, 0.34);
  border-radius: 10px;
  background: rgba(0, 0, 0, 0.36);
  color: rgba(255, 255, 255, 0.78);
  font-size: 10px;
  cursor: pointer;
  backdrop-filter: blur(8px);
  transition: background 180ms ease, color 180ms ease, border-color 180ms ease;
}

.prompt-actions button:hover,
.prompt-actions button.selected {
  border-color: #fff;
  background: #fff;
  color: #050505;
}

.prompt-feedback {
  position: absolute;
  right: var(--gutter);
  bottom: 21px;
  display: flex;
  gap: 8px;
  align-items: center;
  margin: 0;
  color: rgba(255, 255, 255, 0.56);
  font-family: var(--mono);
  font-size: 7px;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  opacity: 0;
  transition: opacity 200ms ease;
}

.prompt-feedback span {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #76da91;
}

.evidence-prompt.answered .prompt-feedback { opacity: 1; }

/* 04 — INVESTIGATION */
.investigation {
  position: relative;
  height: 280svh;
  background: #050505;
}

.investigation-sticky {
  position: sticky;
  top: 0;
  height: 100svh;
  min-height: 720px;
  overflow: hidden;
}

.investigation-stage {
  position: absolute;
  inset: 0;
  overflow: hidden;
  background: #313a30;
}

.investigation-stage > canvas {
  filter: saturate(0.76) contrast(1.16) brightness(0.57);
  transform: scale(1.04);
  transition: filter 800ms ease, transform 1200ms cubic-bezier(0.2, 0.75, 0.2, 1);
}

.investigation[data-step="1"] .investigation-stage > canvas,
.investigation[data-step="2"] .investigation-stage > canvas {
  filter: saturate(0.82) contrast(1.18) brightness(0.53);
  transform: scale(1.09);
}

.investigation[data-step="3"] .investigation-stage > canvas {
  filter: saturate(0.86) contrast(1.2) brightness(0.49);
  transform: scale(1.13);
}

.stage-shade {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(0, 0, 0, 0.86) 0%, rgba(0, 0, 0, 0.57) 32%, rgba(0, 0, 0, 0.08) 66%),
    linear-gradient(180deg, rgba(0, 0, 0, 0.32), transparent 42%, rgba(0, 0, 0, 0.52));
}

.investigation-type {
  position: absolute;
  top: 13vh;
  left: var(--gutter);
  z-index: 6;
}

.investigation-type h2 {
  margin: 0;
  font-size: clamp(60px, 7.1vw, 112px);
  font-weight: 520;
  letter-spacing: -0.07em;
  line-height: 0.83;
}

.investigation-type h2 span {
  display: block;
  color: rgba(255, 255, 255, 0.15);
  transition: color 480ms ease, transform 480ms cubic-bezier(0.2, 0.75, 0.2, 1);
}

.investigation[data-step="0"] .word-observe,
.investigation[data-step="1"] .word-question,
.investigation[data-step="2"] .word-prove,
.investigation[data-step="3"] .word-prove {
  color: #fff;
  transform: translateX(9px);
}

.focus-zone {
  position: absolute;
  top: 25%;
  left: 57%;
  width: min(28vw, 430px);
  height: min(34vh, 340px);
  opacity: 0;
  transition: opacity 500ms ease;
}

.focus-zone span {
  position: absolute;
  width: 42px;
  height: 42px;
  border-color: rgba(255, 255, 255, 0.82);
  border-style: solid;
}

.focus-zone span:nth-child(1) { top: 0; left: 0; border-width: 1px 0 0 1px; }
.focus-zone span:nth-child(2) { top: 0; right: 0; border-width: 1px 1px 0 0; }
.focus-zone span:nth-child(3) { right: 0; bottom: 0; border-width: 0 1px 1px 0; }
.focus-zone span:nth-child(4) { bottom: 0; left: 0; border-width: 0 0 1px 1px; }

.investigation[data-step="0"] .focus-zone,
.investigation[data-step="1"] .focus-zone,
.investigation[data-step="2"] .focus-zone {
  opacity: 1;
}

.stage-pin {
  position: absolute;
  top: 41%;
  left: 68%;
  display: flex;
  gap: 10px;
  align-items: center;
  color: rgba(255, 255, 255, 0.82);
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 420ms ease, transform 420ms ease;
}

.stage-pin i {
  width: 9px;
  height: 9px;
  border: 1px solid #fff;
  border-radius: 50%;
}

.investigation[data-step="2"] .stage-pin,
.investigation[data-step="3"] .stage-pin {
  opacity: 1;
  transform: translateY(0);
}

.stage-question,
.stage-feedback {
  position: absolute;
  right: var(--gutter);
  bottom: 78px;
  z-index: 5;
  width: min(520px, calc(100% - (2 * var(--gutter))));
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 480ms ease, transform 480ms cubic-bezier(0.2, 0.75, 0.2, 1);
}

.stage-question small,
.stage-feedback small {
  color: rgba(255, 255, 255, 0.52);
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.17em;
  text-transform: uppercase;
}

.stage-question p,
.stage-feedback p {
  margin: 16px 0 13px;
  font-size: clamp(31px, 3vw, 48px);
  font-weight: 500;
  letter-spacing: -0.052em;
  line-height: 1;
}

.stage-question > span,
.stage-feedback > span {
  color: rgba(255, 255, 255, 0.52);
  font-size: 11px;
}

.investigation[data-step="1"] .stage-question,
.investigation[data-step="3"] .stage-feedback {
  opacity: 1;
  transform: translateY(0);
}

.stage-selection {
  position: absolute;
  right: var(--gutter);
  bottom: 78px;
  z-index: 5;
  display: flex;
  gap: 10px;
  align-items: center;
  padding: 14px 16px;
  border: 1px solid rgba(255, 255, 255, 0.34);
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.42);
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0;
  transform: translateY(12px);
  backdrop-filter: blur(8px);
  transition: opacity 420ms ease, transform 420ms ease;
}

.stage-selection span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #fff;
}

.investigation[data-step="2"] .stage-selection {
  opacity: 1;
  transform: translateY(0);
}

.stage-progress {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 8;
  height: 2px;
  background: rgba(255, 255, 255, 0.12);
}

.stage-progress i {
  display: block;
  width: 25%;
  height: 100%;
  background: #fff;
  transition: width 500ms cubic-bezier(0.2, 0.75, 0.2, 1);
}

.investigation[data-step="1"] .stage-progress i { width: 50%; }
.investigation[data-step="2"] .stage-progress i { width: 75%; }
.investigation[data-step="3"] .stage-progress i { width: 100%; }

.investigation-index {
  position: absolute;
  bottom: 28px;
  left: var(--gutter);
  z-index: 7;
  display: flex;
  gap: 19px;
  color: rgba(255, 255, 255, 0.3);
  font-family: var(--mono);
  font-size: 7px;
}

.investigation[data-step="0"] .investigation-index span:nth-child(1),
.investigation[data-step="1"] .investigation-index span:nth-child(2),
.investigation[data-step="2"] .investigation-index span:nth-child(3),
.investigation[data-step="3"] .investigation-index span:nth-child(4) {
  color: #fff;
}

/* 05 — MISSIONS */
.missions {
  background: #050505;
}

.missions-intro {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 100svh;
  overflow: hidden;
  padding: 0 var(--gutter) 12vh;
  background: #171a17;
}

.missions-intro-image {
  position: absolute;
  inset: -5%;
  width: 110%;
  height: 110%;
  filter: hue-rotate(-14deg) saturate(0.74) contrast(1.2) brightness(0.56);
  transform: translate3d(0, var(--scene-shift, 0px), 0) scale(1.06);
  will-change: transform;
}

.missions-intro-shade {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(0, 0, 0, 0.88) 0%, rgba(0, 0, 0, 0.56) 40%, rgba(0, 0, 0, 0.18) 76%),
    linear-gradient(180deg, rgba(0, 0, 0, 0.28), transparent 42%, rgba(0, 0, 0, 0.64));
}

.missions-intro::after {
  position: absolute;
  top: 18%;
  right: 8%;
  width: min(34vw, 470px);
  height: min(44vh, 390px);
  border: 1px solid rgba(255, 255, 255, 0.22);
  content: "";
  box-shadow:
    28px 28px 0 -27px rgba(255, 255, 255, 0.42),
    -28px -28px 0 -27px rgba(255, 255, 255, 0.42);
}

.missions-intro > p {
  position: relative;
  z-index: 2;
  color: rgba(255, 255, 255, 0.48);
}

.missions-intro h2 {
  position: relative;
  z-index: 2;
  max-width: 1030px;
  margin: 0;
  font-size: clamp(60px, 7.2vw, 116px);
  font-weight: 500;
  letter-spacing: -0.074em;
  line-height: 0.86;
}

.mission-poster {
  position: relative;
  height: 100svh;
  min-height: 720px;
  overflow: hidden;
  background: #252d26;
}

.mission-poster::after {
  position: absolute;
  top: calc(var(--header-h) + 24px);
  right: var(--gutter);
  z-index: 3;
  color: rgba(255, 255, 255, 0.35);
  font-family: var(--mono);
  font-size: 7px;
  letter-spacing: 0.17em;
  text-transform: uppercase;
  content: "EarthXLab / observation field";
}

.mission-poster > canvas {
  filter: saturate(0.82) contrast(1.16) brightness(0.71);
  transform: translate3d(0, var(--scene-shift, 0px), 0) scale(1.06);
  transition: filter 900ms ease, transform 1500ms cubic-bezier(0.2, 0.75, 0.2, 1);
  will-change: transform;
}

.mission-poster:hover > canvas {
  filter: saturate(0.92) contrast(1.17) brightness(0.76);
  transform: translate3d(0, var(--scene-shift, 0px), 0) scale(1.085);
}

.mission-two > canvas {
  filter: hue-rotate(29deg) saturate(0.62) contrast(1.2) brightness(0.66);
}

.mission-three > canvas {
  filter: hue-rotate(-18deg) saturate(0.68) contrast(1.2) brightness(0.69);
}

.poster-shade {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(0, 0, 0, 0.8) 0%, rgba(0, 0, 0, 0.32) 42%, rgba(0, 0, 0, 0.08) 72%),
    linear-gradient(180deg, rgba(0, 0, 0, 0.18), transparent 47%, rgba(0, 0, 0, 0.62));
}

.poster-copy {
  position: absolute;
  bottom: clamp(48px, 8vh, 86px);
  left: var(--gutter);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  max-width: 780px;
}

.poster-copy > p {
  margin-bottom: 23px;
}

.poster-copy h3 {
  margin: 0;
  font-size: clamp(90px, 10vw, 168px);
  font-weight: 720;
  letter-spacing: -0.075em;
  line-height: 0.78;
  text-transform: uppercase;
}

.poster-description {
  margin-top: 30px;
  color: rgba(255, 255, 255, 0.62);
  font-size: clamp(14px, 1.08vw, 18px);
}

.poster-status {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  margin-top: 28px;
  padding: 0 15px;
  border: 1px solid rgba(255, 255, 255, 0.42);
  border-radius: 2px;
  color: rgba(255, 255, 255, 0.68);
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.mission-two .poster-copy {
  right: var(--gutter);
  left: auto;
  align-items: flex-end;
  text-align: right;
}

.mission-two .poster-shade {
  background:
    linear-gradient(270deg, rgba(0, 0, 0, 0.8) 0%, rgba(0, 0, 0, 0.32) 42%, rgba(0, 0, 0, 0.08) 72%),
    linear-gradient(180deg, rgba(0, 0, 0, 0.18), transparent 47%, rgba(0, 0, 0, 0.62));
}

/* 06 — METHOD */
.method {
  position: relative;
  min-height: 1180px;
  padding: clamp(145px, 13vw, 220px) var(--gutter) 90px;
  background: var(--paper);
  color: var(--ink);
}

.method-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(360px, 0.62fr);
  gap: clamp(80px, 10vw, 170px);
  width: min(100%, var(--content));
  margin: 0 auto;
}

.method-lead > p:first-child {
  color: rgba(8, 11, 14, 0.54);
}

.method-lead h2 {
  margin: 0;
  font-size: clamp(64px, 6.8vw, 108px);
  font-weight: 520;
  letter-spacing: -0.075em;
  line-height: 0.89;
}

.method-copy {
  max-width: 630px;
  margin: 72px 0 0;
  color: rgba(8, 11, 14, 0.64);
  font-size: clamp(16px, 1.18vw, 19px);
  letter-spacing: -0.025em;
  line-height: 1.55;
}

.data-specimen {
  align-self: start;
  margin-top: 72px;
}

.specimen-head {
  display: flex;
  justify-content: space-between;
  padding: 0 0 20px;
  border-bottom: 2px solid var(--ink);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.specimen-head strong {
  font-weight: 500;
}

.data-specimen dl {
  margin: 0;
}

.data-specimen dl > div {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 28px;
  align-items: center;
  min-height: 61px;
  border-bottom: 1px solid rgba(8, 11, 14, 0.17);
}

.data-specimen dt {
  color: rgba(8, 11, 14, 0.45);
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.data-specimen dd {
  margin: 0;
  color: rgba(8, 11, 14, 0.84);
  font-size: 13px;
}

.data-specimen > p {
  max-width: 390px;
  margin: 25px 0 0;
  color: rgba(8, 11, 14, 0.43);
  font-size: 11px;
  line-height: 1.5;
}

.educator-note {
  display: grid;
  grid-template-columns: 160px 1fr auto;
  gap: 55px;
  align-items: center;
  width: min(100%, var(--content));
  margin: 190px auto 0;
  padding-top: 31px;
  border-top: 1px solid rgba(8, 11, 14, 0.2);
}

.educator-note > p {
  margin: 0;
  color: rgba(8, 11, 14, 0.48);
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.17em;
  text-transform: uppercase;
}

.educator-note h3 {
  max-width: 650px;
  margin: 0;
  font-size: clamp(24px, 2.3vw, 37px);
  font-weight: 510;
  letter-spacing: -0.05em;
  line-height: 1.05;
}

.educator-note > span {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* 07 — RETURN */
.return {
  position: relative;
  height: 100svh;
  min-height: 820px;
  overflow: hidden;
  background: #030303;
}

.return::before {
  position: absolute;
  inset: 0;
  content: "";
  opacity: 0.25;
  background-image:
    radial-gradient(circle at 12% 19%, rgba(255, 255, 255, 0.6) 0 0.4px, transparent 0.8px),
    radial-gradient(circle at 72% 26%, rgba(255, 255, 255, 0.4) 0 0.35px, transparent 0.75px),
    radial-gradient(circle at 42% 52%, rgba(162, 215, 237, 0.38) 0 0.4px, transparent 0.8px);
  background-size: 430px 390px, 360px 420px, 520px 470px;
}

.return-planet {
  position: absolute;
  right: -12vw;
  bottom: clamp(-880px, -52vw, -480px);
  z-index: 1;
  width: min(90vw, 1450px);
  aspect-ratio: 1;
}

.return-planet-shell {
  box-shadow:
    -8px -5px 26px rgba(190, 232, 248, 0.14),
    -2px -1px 3px rgba(235, 249, 255, 0.58);
}

.planet-secondary {
  filter: saturate(0.58) contrast(1.28) brightness(0.66);
  transform: rotate(17deg) scale(1.02);
}

.return-copy {
  position: absolute;
  bottom: clamp(142px, 18vh, 190px);
  left: var(--gutter);
  z-index: 3;
  width: min(950px, calc(100% - (2 * var(--gutter))));
}

.return-copy h2 {
  margin: 0;
  font-size: clamp(58px, 6.6vw, 105px);
  font-weight: 720;
  letter-spacing: -0.065em;
  line-height: 0.86;
  text-transform: uppercase;
}

.site-footer {
  position: absolute;
  right: var(--gutter);
  bottom: 24px;
  left: var(--gutter);
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-footer > a:last-child {
  color: rgba(255, 255, 255, 0.4);
  font-size: 10px;
}

/* REVEAL SYSTEM */
.js .descent-copy,
.js .evidence-heading,
.js .missions-intro,
.js .mission-poster .poster-copy,
.js .method-lead,
.js .data-specimen,
.js .educator-note,
.js .return-copy {
  opacity: 0;
  transform: translateY(34px);
  transition: opacity 760ms ease, transform 760ms cubic-bezier(0.2, 0.75, 0.2, 1);
}

.js .is-visible,
.js .mission-poster.is-visible .poster-copy {
  opacity: 1;
  transform: translateY(0);
}

.js .descent-copy h2,
.js .evidence-heading h2,
.js .missions-intro h2,
.js .mission-poster .poster-copy h3,
.js .method-lead h2,
.js .return-copy h2 {
  clip-path: inset(0 0 100% 0);
  transform: translateY(28px);
  transition:
    clip-path 1.05s cubic-bezier(0.16, 0.84, 0.22, 1),
    transform 1.05s cubic-bezier(0.16, 0.84, 0.22, 1);
}

.js .descent-copy.is-visible h2,
.js .evidence-heading.is-visible h2,
.js .missions-intro.is-visible h2,
.js .mission-poster.is-visible .poster-copy h3,
.js .method-lead.is-visible h2,
.js .return-copy.is-visible h2 {
  clip-path: inset(0);
  transform: translateY(0);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

@media (max-width: 1180px) {
  :root { --gutter: clamp(24px, 4vw, 48px); }

  .primary-nav {
    gap: 26px;
    margin-left: 48px;
  }

  .hero-copy {
    width: min(650px, 63vw);
  }

  .hero-telemetry {
    grid-template-columns: repeat(3, 1fr);
    padding-right: 180px;
  }

  .hero-telemetry > div:nth-child(2) { display: none; }

  h1 {
    font-size: clamp(68px, 8.1vw, 94px);
  }

  .hero-planet {
    right: -28vw;
    bottom: -470px;
    width: 112vw;
  }

  .baku-target {
    top: 47%;
    left: 29%;
  }

  .method-layout {
    grid-template-columns: minmax(0, 1fr) minmax(330px, 0.68fr);
    gap: 65px;
  }
}

@media (max-width: 860px) {
  .primary-nav { display: none; }
  .scene-rail { display: none; }

  .evidence-prompt {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .prompt-actions {
    width: 100%;
    max-width: none;
  }

  .method-layout {
    grid-template-columns: 1fr;
  }

  .data-specimen {
    width: min(100%, 620px);
    margin-top: 110px;
  }

  .educator-note {
    grid-template-columns: 120px 1fr;
  }

  .educator-note > span {
    grid-column: 2;
  }
}

@media (max-width: 700px) {
  :root {
    --gutter: 20px;
    --header-h: 64px;
  }

  .header-inner {
    grid-template-columns: 1fr auto;
    width: calc(100% - 40px);
  }

  .wordmark {
    gap: 8px;
    font-size: 13px;
  }

  .brand-symbol {
    width: 21px;
    height: 21px;
  }

  .header-cta {
    grid-column: 2;
    min-width: 98px;
    height: 39px;
    padding: 0 13px;
  }

  .orbit {
    height: auto;
    min-height: 980px;
  }

  .hero-grid {
    width: calc(100% - 40px);
    min-height: 980px;
  }

  .hero-planet {
    top: 42px;
    right: -280px;
    bottom: auto;
    width: 780px;
  }

  .hero-signal {
    top: 19%;
    left: 61%;
    opacity: 0.68;
  }

  .hero-signal span { width: 260px; }

  .baku-target {
    top: 32%;
    left: 31%;
    transform: scale(0.74);
    transform-origin: left center;
  }

  .hero-copy {
    top: 426px;
    right: 0;
    left: 0;
    width: 100%;
    opacity: var(--hero-copy-opacity);
    transform: translateY(calc(0px - var(--hero-copy-shift)));
  }

  .hero-eyebrow {
    margin-bottom: 23px;
  }

  h1 {
    font-size: clamp(49px, 12.2vw, 61px);
    line-height: 0.94;
  }

  h1 span {
    width: 100%;
    white-space: normal;
  }

  .hero-intro {
    margin-top: 27px;
    font-size: 14px;
    line-height: 1.5;
  }

  .hero-actions {
    display: grid;
    grid-template-columns: 1fr;
    margin-top: 27px;
  }

  .hero-telemetry {
    right: 20px;
    bottom: 24px;
    left: 20px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    width: auto;
    padding: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
  }

  .hero-telemetry > div,
  .hero-telemetry > div:first-child {
    min-height: 34px;
    padding: 0;
    border: 0;
  }

  .hero-telemetry > div:nth-child(3) { display: none; }

  .button {
    width: 100%;
  }

  .scroll-cue { display: none; }

  .descent {
    min-height: 780px;
  }

  .scan-frame {
    top: 14%;
    right: 20px;
    left: 20px;
    width: auto;
    height: 48vh;
  }

  .descent-copy {
    bottom: 48px;
    width: calc(100% - 40px);
  }

  .descent-copy h2 {
    font-size: clamp(46px, 12vw, 61px);
    line-height: 0.9;
  }

  .outline-action {
    height: 50px;
    margin-top: 27px;
  }

  .evidence-heading {
    min-height: 570px;
    padding-bottom: 76px;
  }

  .evidence-heading h2 {
    font-size: clamp(51px, 13vw, 64px);
    line-height: 0.91;
  }

  .evidence-heading > p {
    margin-top: 25px;
    font-size: 15px;
  }

  .comparison {
    height: 790px;
    min-height: 790px;
  }

  .archive-label {
    top: 22px;
  }

  .archive-label-before { left: 16px; }
  .archive-label-after { right: 16px; }
  .comparison-location { display: none; }

  .source-hook {
    right: 16px;
    bottom: 15px;
    left: 16px;
    text-align: right;
  }

  .evidence-prompt {
    gap: 24px;
    padding: 150px 20px 46px;
  }

  .prompt-copy h3 {
    font-size: 43px;
  }

  .prompt-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .prompt-actions button:last-child {
    grid-column: 1 / -1;
  }

  .prompt-feedback {
    right: 20px;
    bottom: 18px;
  }

  .investigation {
    height: 240svh;
  }

  .investigation-sticky {
    min-height: 760px;
  }

  .stage-shade {
    background:
      linear-gradient(180deg, rgba(0, 0, 0, 0.72), rgba(0, 0, 0, 0.14) 44%, rgba(0, 0, 0, 0.62)),
      linear-gradient(90deg, rgba(0, 0, 0, 0.34), transparent 65%);
  }

  .investigation-type {
    top: 92px;
    right: 20px;
    left: 20px;
  }

  .investigation-type h2 {
    font-size: clamp(49px, 12vw, 61px);
    line-height: 0.87;
  }

  .focus-zone {
    top: 35%;
    left: 19%;
    width: 62%;
    height: 31%;
  }

  .stage-pin {
    top: 48%;
    left: 44%;
  }

  .stage-question,
  .stage-feedback {
    right: 20px;
    bottom: 80px;
    left: 20px;
    width: auto;
  }

  .stage-question p,
  .stage-feedback p {
    font-size: 33px;
  }

  .stage-selection {
    right: 20px;
    bottom: 74px;
  }

  .investigation-index {
    left: 20px;
  }

  .missions-intro {
    min-height: max(760px, 100svh);
    padding-bottom: 90px;
  }

  .missions-intro h2 {
    font-size: clamp(51px, 13vw, 64px);
    line-height: 0.9;
  }

  .mission-poster {
    height: 100svh;
    min-height: 760px;
  }

  .poster-copy,
  .mission-two .poster-copy {
    right: 20px;
    bottom: 47px;
    left: 20px;
    align-items: flex-start;
    text-align: left;
  }

  .poster-copy h3 {
    font-size: clamp(82px, 25vw, 118px);
  }

  .poster-description {
    margin-top: 23px;
    font-size: 14px;
  }

  .poster-status {
    margin-top: 20px;
    font-size: 8px;
  }

  .mission-poster::after {
    top: calc(var(--header-h) + 18px);
    right: 20px;
  }

  .mission-two .poster-shade {
    background:
      linear-gradient(90deg, rgba(0, 0, 0, 0.76), rgba(0, 0, 0, 0.18) 66%),
      linear-gradient(180deg, rgba(0, 0, 0, 0.16), transparent 46%, rgba(0, 0, 0, 0.7));
  }

  .method {
    min-height: 0;
    padding: 112px 20px 72px;
  }

  .method-lead h2 {
    font-size: clamp(49px, 12.6vw, 62px);
    line-height: 0.91;
  }

  .method-copy {
    margin-top: 45px;
    font-size: 15px;
  }

  .data-specimen {
    margin-top: 95px;
  }

  .data-specimen dl > div {
    min-height: 57px;
  }

  .educator-note {
    grid-template-columns: 1fr;
    gap: 26px;
    margin-top: 130px;
  }

  .educator-note > span {
    grid-column: auto;
  }

  .educator-note h3 {
    font-size: 30px;
  }

  .return {
    min-height: 880px;
  }

  .return-planet {
    right: -220px;
    bottom: -320px;
    width: 780px;
  }

  .return-copy {
    top: 150px;
    right: 20px;
    bottom: auto;
    left: 20px;
    width: auto;
  }

  .return-copy h2 {
    font-size: clamp(48px, 12.6vw, 62px);
    line-height: 0.89;
  }

  .return-actions {
    display: grid;
    grid-template-columns: 1fr;
    width: min(100%, 330px);
    margin-top: 31px;
  }

  .site-footer {
    right: 20px;
    bottom: 20px;
    left: 20px;
  }
}

@media (max-width: 420px) {
  .header-cta {
    min-width: 80px;
  }

  .header-cta span {
    font-size: 0;
  }

  .header-cta span::after {
    content: "Start";
    font-size: 10px;
  }

  .hero-planet {
    right: -310px;
  }

  .prompt-actions {
    grid-template-columns: 1fr;
  }

  .prompt-actions button:last-child {
    grid-column: auto;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

  .hero-planet {
    transform: none !important;
  }

  .signal-cursor { display: none !important; }

  .investigation {
    height: 100svh;
  }
}