@import url("https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500;600&family=Newsreader:opsz,wght@6..72,400;6..72,500;6..72,600;6..72,700&family=Space+Grotesk:wght@400;500;600;700&display=swap");

:root {
  --paper: #f4f0e7;
  --paper-deep: #e9e2d5;
  --ink: #102027;
  --ink-soft: #4d5d61;
  --midnight: #071018;
  --ocean: #0c2330;
  --ocean-soft: #173a49;
  --cyan: #75e6e1;
  --cyan-dim: #3e9ea1;
  --amber: #ffb45c;
  --amber-deep: #b66f26;
  --violet: #b9a7ff;
  --line: rgba(16, 32, 39, 0.16);
  --line-dark: rgba(244, 240, 231, 0.18);
  --display: "Space Grotesk", "Helvetica Neue", Arial, sans-serif;
  --body: "Newsreader", Georgia, serif;
  --mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
  --measure: 70rem;
  --text-measure: 41rem;
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 10% 6%, rgba(255, 180, 92, 0.08), transparent 23rem),
    var(--paper);
  font-family: var(--body);
  font-size: 1.14rem;
  line-height: 1.48;
  text-rendering: optimizeLegibility;
}

::selection {
  color: var(--midnight);
  background: var(--cyan);
}

img,
svg {
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--amber-deep);
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  font: inherit;
}

.container {
  width: min(calc(100% - 3rem), var(--measure));
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  z-index: 20;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.7rem 1rem;
  color: var(--midnight);
  background: var(--cyan);
  font: 600 0.78rem/1 var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  transform: translateY(-180%);
  transition: transform 160ms ease;
}

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

.site-header {
  position: relative;
  z-index: 10;
  color: var(--paper);
  background: var(--midnight);
  border-bottom: 1px solid var(--line-dark);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 4.25rem;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--paper);
  font: 600 0.8rem/1 var(--mono);
  letter-spacing: 0.08em;
  text-decoration: none;
  text-transform: uppercase;
}

.brand-mark {
  display: inline-grid;
  width: 1.7rem;
  height: 1.7rem;
  place-items: center;
  color: var(--midnight);
  background: var(--cyan);
  font: 700 0.8rem/1 var(--display);
  transform: rotate(-8deg);
}

.site-nav,
.site-nav-list,
.language-link {
  display: flex;
  align-items: center;
}

.site-nav-list {
  margin: 0;
  padding: 0;
  gap: 1.25rem;
  list-style: none;
}

.site-nav a,
.language-link {
  color: rgba(244, 240, 231, 0.77);
  font: 500 0.72rem/1 var(--mono);
  letter-spacing: 0.06em;
  text-decoration: none;
  text-transform: uppercase;
}

.site-nav a:hover,
.language-link:hover {
  color: var(--cyan);
}

.language-link {
  gap: 0.45rem;
  padding-left: 1.2rem;
  border-left: 1px solid var(--line-dark);
}

.language-link::before {
  width: 0.38rem;
  height: 0.38rem;
  background: var(--amber);
  content: "";
  transform: rotate(45deg);
}

.hero {
  position: relative;
  overflow: hidden;
  color: var(--paper);
  background:
    radial-gradient(circle at 74% 30%, rgba(62, 158, 161, 0.22), transparent 25rem),
    radial-gradient(circle at 20% 82%, rgba(185, 167, 255, 0.1), transparent 22rem),
    var(--midnight);
}

.hero::before,
.hero::after {
  position: absolute;
  border: 1px solid rgba(117, 230, 225, 0.18);
  border-radius: 50%;
  content: "";
  pointer-events: none;
}

.hero::before {
  top: -30rem;
  right: -12rem;
  width: 62rem;
  height: 62rem;
}

.hero::after {
  top: -18rem;
  right: 2rem;
  width: 42rem;
  height: 42rem;
}

.hero-grid {
  display: grid;
  align-items: center;
  min-height: 40rem;
  padding-block: 5.6rem 4.8rem;
  grid-template-columns: minmax(0, 0.96fr) minmax(25rem, 1.04fr);
  gap: 4rem;
}

.eyebrow,
.utility-label {
  margin: 0 0 1.1rem;
  color: var(--amber);
  font: 600 0.7rem/1.2 var(--mono);
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.hero h1,
.section-heading h2 {
  margin: 0;
  font-family: var(--display);
  font-weight: 600;
  letter-spacing: -0.055em;
}

.hero h1 {
  max-width: 11ch;
  color: var(--paper);
  font-size: clamp(3.5rem, 7.2vw, 6.8rem);
  line-height: 0.91;
}

.hero-deck {
  max-width: 34rem;
  margin: 2rem 0 0;
  color: rgba(244, 240, 231, 0.82);
  font-size: clamp(1.34rem, 2.1vw, 1.72rem);
  line-height: 1.22;
}

.hero-source {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.55rem;
  color: rgba(244, 240, 231, 0.58);
  font: 0.68rem/1.4 var(--mono);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.hero-brief {
  max-width: 33rem;
  margin-top: 1.7rem;
  padding: 0.85rem 1rem 0.9rem;
  border-left: 2px solid var(--cyan);
  background: rgba(117, 230, 225, 0.07);
}

.hero-brief p {
  margin: 0;
  color: rgba(244, 240, 231, 0.72);
  font-size: 1.04rem;
  line-height: 1.32;
}

.hero-brief .hero-brief-label {
  margin-bottom: 0.35rem;
  color: var(--cyan);
  font: 600 0.65rem/1.2 var(--mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.cite-links {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  vertical-align: middle;
}

.cite-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.8rem;
  min-height: 1.55rem;
  padding: 0.14rem 0.35rem;
  color: var(--cyan);
  border: 1px solid rgba(117, 230, 225, 0.45);
  font: 600 0.64rem/1 var(--mono);
  letter-spacing: 0.03em;
  text-decoration: none;
}

.cite-link:hover {
  color: var(--midnight);
  background: var(--cyan);
}

.hero-figure {
  position: relative;
  min-height: 32rem;
}

.hero-figure::before {
  position: absolute;
  inset: 8% 4% 0;
  background-image: linear-gradient(rgba(117, 230, 225, 0.09) 1px, transparent 1px), linear-gradient(90deg, rgba(117, 230, 225, 0.09) 1px, transparent 1px);
  background-size: 3rem 3rem;
  content: "";
  mask-image: linear-gradient(to bottom, transparent, #000 25%, #000 75%, transparent);
  opacity: 0.55;
}

.orbit-ring {
  position: absolute;
  top: 9%;
  left: 13%;
  width: 76%;
  height: 56%;
  border: 1px solid rgba(117, 230, 225, 0.28);
  border-radius: 50%;
  transform: rotate(-16deg);
}

.orbit-ring--second {
  top: 21%;
  left: 1%;
  width: 84%;
  height: 42%;
  border-color: rgba(255, 180, 92, 0.26);
  transform: rotate(17deg);
}

.hero-earth {
  position: absolute;
  right: 0;
  bottom: -7%;
  left: 2%;
  height: 48%;
  overflow: hidden;
  border-top: 1px solid rgba(117, 230, 225, 0.7);
  border-radius: 50% 50% 0 0 / 22% 22% 0 0;
  background:
    radial-gradient(ellipse at 50% 12%, rgba(117, 230, 225, 0.28), transparent 50%),
    linear-gradient(165deg, transparent 42%, rgba(117, 230, 225, 0.09) 43%, transparent 44%),
    linear-gradient(30deg, transparent 54%, rgba(185, 167, 255, 0.12) 55%, transparent 56%),
    var(--ocean);
}

.hero-earth::before,
.hero-earth::after {
  position: absolute;
  width: 70%;
  height: 12%;
  border-top: 1px solid rgba(255, 180, 92, 0.45);
  border-radius: 50%;
  content: "";
}

.hero-earth::before {
  top: 22%;
  left: 13%;
  transform: rotate(-13deg);
}

.hero-earth::after {
  top: 51%;
  left: 23%;
  transform: rotate(8deg);
}

.hero-satellite {
  position: absolute;
  z-index: 1;
  display: grid;
  width: 8.6rem;
  height: 4.2rem;
  place-items: center;
  color: var(--midnight);
  background: var(--paper);
  box-shadow: 0 0 0 0.35rem rgba(244, 240, 231, 0.06), 0 1.4rem 3rem rgba(0, 0, 0, 0.26);
  font: 600 0.68rem/1 var(--mono);
  letter-spacing: 0.06em;
  transform: rotate(-8deg);
}

.hero-satellite::before,
.hero-satellite::after {
  position: absolute;
  top: 0.7rem;
  bottom: 0.7rem;
  width: 2.8rem;
  border: 1px solid var(--cyan-dim);
  background: rgba(117, 230, 225, 0.16);
  content: "";
}

.hero-satellite::before {
  right: 100%;
  margin-right: 0.7rem;
}

.hero-satellite::after {
  left: 100%;
  margin-left: 0.7rem;
}

.hero-satellite--one {
  top: 11%;
  right: 16%;
}

.hero-satellite--two {
  top: 34%;
  right: 48%;
  transform: rotate(9deg) scale(0.76);
}

.hero-signal {
  position: absolute;
  z-index: 2;
  top: 39%;
  right: 21%;
  width: 38%;
  border-top: 2px solid var(--amber);
  box-shadow: 0 0 1.4rem rgba(255, 180, 92, 0.38);
  transform: rotate(31deg);
  transform-origin: right;
}

.hero-signal::after {
  position: absolute;
  top: -0.45rem;
  right: -0.25rem;
  width: 0.65rem;
  height: 0.65rem;
  background: var(--amber);
  content: "";
  transform: rotate(45deg);
}

.hero-caption {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 16%;
  padding-top: 1rem;
  color: rgba(244, 240, 231, 0.57);
  border-top: 1px solid var(--line-dark);
  font-size: 0.98rem;
  line-height: 1.32;
}

.hero-stats {
  display: grid;
  max-width: 62rem;
  margin-top: 0.5rem;
  padding-block: 1.35rem;
  border-top: 1px solid var(--line-dark);
  grid-template-columns: repeat(3, 1fr);
}

.stat {
  min-height: 4.2rem;
  padding: 0.2rem 1.4rem;
  border-left: 1px solid var(--line-dark);
}

.stat:first-child {
  padding-left: 0;
  border-left: 0;
}

.stat-value {
  display: block;
  color: var(--cyan);
  font: 600 clamp(1rem, 2.1vw, 1.35rem)/1.05 var(--mono);
  letter-spacing: -0.05em;
}

.stat-label {
  display: block;
  max-width: 15rem;
  margin-top: 0.55rem;
  color: rgba(244, 240, 231, 0.56);
  font: 0.67rem/1.3 var(--mono);
  letter-spacing: 0.02em;
}

.section {
  position: relative;
  padding-block: 7.6rem;
}

.section--paper {
  background: var(--paper);
}

.section--deep {
  color: var(--paper);
  background: var(--ocean);
}

.section--ink {
  color: var(--paper);
  background: var(--midnight);
}

.section-heading {
  max-width: 50rem;
  margin-bottom: 3.3rem;
}

.section-heading h2 {
  max-width: 17ch;
  font-size: clamp(2.5rem, 5vw, 5.2rem);
  line-height: 0.98;
}

.section-heading p {
  max-width: var(--text-measure);
  margin: 1.45rem 0 0;
  color: var(--ink-soft);
  font-size: clamp(1.23rem, 1.7vw, 1.48rem);
  line-height: 1.3;
}

.section--deep .section-heading p,
.section--ink .section-heading p {
  color: rgba(244, 240, 231, 0.67);
}

.section--deep .eyebrow,
.section--ink .eyebrow {
  color: var(--cyan);
}

.signal-layout {
  display: grid;
  align-items: start;
  grid-template-columns: minmax(0, 1.3fr) minmax(18rem, 0.7fr);
  gap: 3rem;
}

.signal-frame {
  overflow: hidden;
  border: 1px solid rgba(117, 230, 225, 0.32);
  background: var(--midnight);
  box-shadow: 1rem 1.3rem 0 rgba(7, 16, 24, 0.18);
}

.signal-stage {
  position: relative;
  min-height: 32rem;
  overflow: hidden;
  isolation: isolate;
  background:
    radial-gradient(circle at 63% 67%, rgba(255, 180, 92, 0.1), transparent 7rem),
    radial-gradient(circle at 48% 32%, rgba(117, 230, 225, 0.1), transparent 15rem),
    var(--midnight);
}

.signal-stage::before {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(117, 230, 225, 0.08) 1px, transparent 1px), linear-gradient(90deg, rgba(117, 230, 225, 0.08) 1px, transparent 1px);
  background-size: 2.6rem 2.6rem;
  content: "";
  mask-image: linear-gradient(to bottom, transparent, #000 20%, #000 80%, transparent);
  opacity: 0.65;
}

.signal-stage::after {
  position: absolute;
  right: -20%;
  bottom: -64%;
  left: -20%;
  height: 90%;
  border-top: 1px solid rgba(117, 230, 225, 0.62);
  border-radius: 50% 50% 0 0;
  background: linear-gradient(165deg, transparent 39%, rgba(117, 230, 225, 0.08) 40%, transparent 41%), var(--ocean);
  content: "";
  transform: rotate(-3deg);
}

.stage-label {
  position: absolute;
  z-index: 4;
  top: 1.1rem;
  left: 1.2rem;
  color: rgba(244, 240, 231, 0.55);
  font: 0.66rem/1.3 var(--mono);
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.stage-coordinate {
  position: absolute;
  z-index: 4;
  right: 1.2rem;
  bottom: 1.05rem;
  color: rgba(244, 240, 231, 0.53);
  font: 0.65rem/1.2 var(--mono);
  letter-spacing: 0.06em;
}

.stage-coordinate strong {
  color: var(--amber);
  font-weight: 500;
}

.satellite {
  position: absolute;
  z-index: 3;
  display: grid;
  width: 5.6rem;
  height: 2.8rem;
  place-items: center;
  color: var(--midnight);
  background: var(--paper);
  box-shadow: 0 0 0 0.28rem rgba(244, 240, 231, 0.06), 0 0.8rem 1.7rem rgba(0, 0, 0, 0.3);
  font: 600 0.59rem/1 var(--mono);
  letter-spacing: 0.05em;
}

.satellite::before,
.satellite::after {
  position: absolute;
  top: 0.38rem;
  bottom: 0.38rem;
  width: 1.6rem;
  border: 1px solid var(--cyan-dim);
  background: rgba(117, 230, 225, 0.14);
  content: "";
}

.satellite::before {
  right: 100%;
  margin-right: 0.35rem;
}

.satellite::after {
  left: 100%;
  margin-left: 0.35rem;
}

.satellite--a {
  top: 15%;
  left: 21%;
  transform: rotate(-12deg);
}

.satellite--b {
  top: 24%;
  right: 17%;
  transform: rotate(12deg) scale(0.85);
}

.satellite--c {
  top: 49%;
  left: 42%;
  transform: rotate(-3deg) scale(0.74);
}

.bearing {
  position: absolute;
  z-index: 2;
  height: 1px;
  border-top: 1px solid var(--amber);
  box-shadow: 0 0 0.9rem rgba(255, 180, 92, 0.5);
  transform-origin: left center;
  transition: opacity 260ms ease, width 260ms ease;
}

.bearing::after {
  position: absolute;
  top: -0.25rem;
  right: -0.22rem;
  width: 0.45rem;
  height: 0.45rem;
  background: var(--amber);
  content: "";
  transform: rotate(45deg);
}

.bearing--a {
  top: 27%;
  left: 25%;
  width: 50%;
  transform: rotate(57deg);
}

.bearing--b {
  top: 36%;
  left: 77%;
  width: 58%;
  transform: rotate(145deg);
}

.bearing--c {
  top: 57%;
  left: 46%;
  width: 35%;
  transform: rotate(20deg);
}

.uncertainty {
  position: absolute;
  z-index: 1;
  top: 62%;
  left: 62%;
  width: 15rem;
  height: 7rem;
  border: 1px solid rgba(185, 167, 255, 0.65);
  border-radius: 50%;
  background: rgba(185, 167, 255, 0.08);
  transform: translate(-50%, -50%) rotate(-20deg);
  transition: opacity 260ms ease, width 260ms ease, height 260ms ease;
}

.uncertainty--medium {
  width: 10rem;
  height: 4.7rem;
  border-color: rgba(117, 230, 225, 0.72);
  background: rgba(117, 230, 225, 0.08);
}

.uncertainty--small {
  width: 4.4rem;
  height: 2.25rem;
  border-color: var(--amber);
  background: rgba(255, 180, 92, 0.16);
}

.source-point {
  position: absolute;
  z-index: 5;
  top: 62%;
  left: 62%;
  width: 0.72rem;
  height: 0.72rem;
  background: var(--amber);
  box-shadow: 0 0 0 0.35rem rgba(255, 180, 92, 0.17), 0 0 1.2rem rgba(255, 180, 92, 0.75);
  transform: translate(-50%, -50%) rotate(45deg);
}

.source-point::after {
  position: absolute;
  top: 1.1rem;
  left: -0.7rem;
  color: var(--amber);
  content: attr(data-label);
  font: 0.57rem/1 var(--mono);
  letter-spacing: 0.08em;
  transform: rotate(-45deg);
}

.signal-stage[data-step="1"] .bearing--b,
.signal-stage[data-step="1"] .bearing--c,
.signal-stage[data-step="2"] .bearing--c {
  opacity: 0;
}

.signal-stage[data-step="1"] .uncertainty--medium,
.signal-stage[data-step="1"] .uncertainty--small,
.signal-stage[data-step="2"] .uncertainty--small {
  opacity: 0;
}

.signal-stage[data-step="1"] .uncertainty--wide {
  width: 15rem;
  height: 7rem;
}

.signal-stage[data-step="2"] .uncertainty--wide {
  width: 10rem;
  height: 4.7rem;
  border-color: rgba(117, 230, 225, 0.72);
  background: rgba(117, 230, 225, 0.08);
}

.signal-stage[data-step="3"] .uncertainty--wide {
  width: 4.4rem;
  height: 2.25rem;
  border-color: var(--amber);
  background: rgba(255, 180, 92, 0.16);
}

.signal-stage[data-step="3"] .uncertainty--medium,
.signal-stage[data-step="3"] .uncertainty--small {
  opacity: 0;
}

.signal-caption {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.8rem 1.05rem;
  color: rgba(244, 240, 231, 0.56);
  border-top: 1px solid rgba(117, 230, 225, 0.22);
  font: 0.64rem/1.35 var(--mono);
  letter-spacing: 0.02em;
}

.signal-caption strong {
  color: var(--cyan);
  font-weight: 500;
}

.signal-copy-panel {
  padding-top: 0.2rem;
}

.signal-copy-panel .utility-label {
  color: var(--cyan);
}

.signal-copy-panel h3 {
  margin: 0;
  color: var(--paper);
  font: 600 clamp(1.9rem, 3.2vw, 3rem)/1.02 var(--display);
  letter-spacing: -0.05em;
}

.signal-copy-panel p {
  margin: 1.2rem 0 0;
  color: rgba(244, 240, 231, 0.7);
  font-size: 1.26rem;
  line-height: 1.3;
}

.signal-copy-panel [data-signal-readout] {
  margin-top: 1.8rem;
  color: var(--amber);
  font: 600 0.73rem/1 var(--mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.signal-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.7rem;
}

.control-button {
  min-height: 2.9rem;
  padding: 0.65rem 0.92rem;
  color: var(--midnight);
  border: 1px solid var(--cyan);
  background: var(--cyan);
  cursor: pointer;
  font: 600 0.7rem/1.1 var(--mono);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.control-button:hover:not(:disabled),
.control-button:focus-visible:not(:disabled) {
  color: var(--paper);
  background: transparent;
}

.control-button:disabled {
  color: rgba(244, 240, 231, 0.48);
  border-color: rgba(244, 240, 231, 0.24);
  background: transparent;
  cursor: default;
}

.control-button--secondary {
  color: rgba(244, 240, 231, 0.74);
  border-color: rgba(244, 240, 231, 0.3);
  background: transparent;
}

.control-button--secondary:hover,
.control-button--secondary:focus-visible {
  color: var(--midnight);
  border-color: var(--paper);
  background: var(--paper);
}

.signal-note {
  margin-top: 1.8rem !important;
  color: rgba(244, 240, 231, 0.65) !important;
  font: 0.69rem/1.45 var(--mono) !important;
}

.signal-copy {
  margin: 0;
}

.signal-copy[hidden] {
  display: none;
}

.comparison-grid {
  display: grid;
  border-top: 1px solid var(--line);
  grid-template-columns: repeat(3, 1fr);
}

.comparison-card {
  min-height: 31rem;
  padding: 1.25rem 1.45rem 1.8rem;
  border-left: 1px solid var(--line);
}

.comparison-card:first-child {
  border-left: 0;
}

.comparison-card--optical {
  background: linear-gradient(180deg, rgba(255, 180, 92, 0.06), transparent 70%);
}

.comparison-card--radar {
  background: linear-gradient(180deg, rgba(117, 230, 225, 0.08), transparent 70%);
}

.comparison-card--rf {
  background: linear-gradient(180deg, rgba(185, 167, 255, 0.1), transparent 70%);
}

.comparison-number {
  display: block;
  color: var(--amber-deep);
  font: 600 0.72rem/1 var(--mono);
  letter-spacing: 0.11em;
}

.comparison-visual {
  position: relative;
  height: 10rem;
  margin: 1.35rem 0 1.7rem;
  overflow: hidden;
  border: 1px solid rgba(16, 32, 39, 0.22);
  background: var(--ocean);
}

.comparison-visual::before,
.comparison-visual::after {
  position: absolute;
  content: "";
}

.comparison-visual::before {
  inset: 0;
  background-image: linear-gradient(rgba(117, 230, 225, 0.13) 1px, transparent 1px), linear-gradient(90deg, rgba(117, 230, 225, 0.13) 1px, transparent 1px);
  background-size: 1.6rem 1.6rem;
}

.comparison-card--optical .comparison-visual::after {
  right: 21%;
  bottom: 19%;
  width: 44%;
  height: 45%;
  border: 1px solid var(--amber);
  background: linear-gradient(145deg, transparent 45%, rgba(255, 180, 92, 0.2) 46%, transparent 47%), rgba(255, 180, 92, 0.08);
  transform: skew(-13deg);
}

.comparison-card--radar .comparison-visual::after {
  top: 30%;
  right: 8%;
  left: 8%;
  height: 40%;
  border-block: 1px solid var(--cyan);
  background: repeating-linear-gradient(0deg, transparent 0 0.5rem, rgba(117, 230, 225, 0.18) 0.55rem 0.59rem);
  transform: skewY(-9deg);
}

.comparison-card--rf .comparison-visual::after {
  top: 50%;
  right: 12%;
  left: 12%;
  height: 1.3rem;
  border-block: 1px solid var(--violet);
  background: linear-gradient(90deg, transparent 0 8%, var(--violet) 8% 9%, transparent 9% 28%, var(--violet) 28% 29%, transparent 29% 48%, var(--violet) 48% 49%, transparent 49% 69%, var(--violet) 69% 70%, transparent 70%);
  box-shadow: 0 0 1rem rgba(185, 167, 255, 0.36);
}

.comparison-label {
  margin: 0;
  color: var(--ink-soft);
  font: 600 0.7rem/1.2 var(--mono);
  letter-spacing: 0.1em;
}

.comparison-card h3 {
  max-width: 15ch;
  margin: 0.72rem 0 0;
  font: 600 clamp(1.55rem, 2.5vw, 2.18rem)/1.03 var(--display);
  letter-spacing: -0.045em;
}

.comparison-card p {
  margin: 1rem 0 0;
  color: var(--ink-soft);
  font-size: 1.12rem;
  line-height: 1.35;
}

.section-footnote {
  max-width: var(--text-measure);
  margin: 1.5rem 0 0;
  color: var(--ink-soft);
  font: 0.8rem/1.45 var(--mono);
}

.method-note {
  max-width: var(--text-measure);
  margin: 1.8rem 0 0;
  padding: 1rem 1.1rem;
  color: var(--ink);
  border-left: 2px solid var(--amber);
  background: rgba(255, 180, 92, 0.12);
  font-size: 1.08rem;
  line-height: 1.38;
}

.timeline {
  position: relative;
  display: grid;
  gap: 0;
  max-width: 67rem;
  margin-inline: auto;
}

.timeline::before {
  position: absolute;
  top: 0.35rem;
  bottom: 0.35rem;
  left: 8.4rem;
  width: 1px;
  background: linear-gradient(var(--cyan), rgba(117, 230, 225, 0.14));
  content: "";
}

.timeline-event {
  display: grid;
  min-height: 8.6rem;
  padding-block: 0.3rem 2.3rem;
  grid-template-columns: 7rem 2.8rem minmax(0, 1fr);
  gap: 1.4rem;
}

.timeline-date {
  padding-top: 0.25rem;
  color: var(--amber);
  font: 600 0.68rem/1.25 var(--mono);
  letter-spacing: 0.04em;
  text-align: right;
}

.timeline-marker {
  position: relative;
  z-index: 1;
  display: grid;
  width: 0.95rem;
  height: 0.95rem;
  margin-top: 0.2rem;
  place-items: center;
  border: 1px solid var(--cyan);
  background: var(--ocean);
  transform: rotate(45deg);
}

.timeline-marker::after {
  width: 0.25rem;
  height: 0.25rem;
  background: var(--cyan);
  content: "";
}

.timeline-event--last .timeline-marker {
  border-color: var(--amber);
  background: var(--amber);
}

.timeline-event--last .timeline-marker::after {
  background: var(--midnight);
}

.timeline-copy h3 {
  margin: 0;
  color: var(--paper);
  font: 600 clamp(1.35rem, 2.4vw, 2rem)/1.08 var(--display);
  letter-spacing: -0.04em;
}

.timeline-copy p {
  max-width: 42rem;
  margin: 0.63rem 0 0;
  color: rgba(244, 240, 231, 0.65);
  font-size: 1.14rem;
  line-height: 1.36;
}

.timeline-context {
  display: inline-flex;
  margin-top: 0.75rem;
  padding: 0.3rem 0.45rem;
  color: var(--amber);
  border: 1px solid rgba(255, 180, 92, 0.35);
  font: 600 0.62rem/1.15 var(--mono);
  letter-spacing: 0.06em;
}

.share-layout {
  display: grid;
  align-items: center;
  grid-template-columns: minmax(0, 0.95fr) minmax(21rem, 1.05fr);
  gap: 5rem;
}

.share-copy h2,
.boundary-copy h2,
.conclusion h2 {
  max-width: 15ch;
  margin: 0;
  font: 600 clamp(2.4rem, 4.5vw, 4.8rem)/0.98 var(--display);
  letter-spacing: -0.055em;
}

.share-copy p,
.boundary-copy > p,
.conclusion > p {
  max-width: 38rem;
  margin: 1.5rem 0 0;
  color: rgba(244, 240, 231, 0.71);
  font-size: clamp(1.22rem, 1.8vw, 1.52rem);
  line-height: 1.3;
}

.share-copy .utility-label,
.boundary-copy .utility-label,
.conclusion .utility-label {
  color: var(--amber);
}

.synthesis-label {
  display: inline-flex;
  margin-top: 1.5rem;
  padding: 0.35rem 0.55rem;
  color: var(--cyan);
  border: 1px solid rgba(117, 230, 225, 0.35);
  font: 0.65rem/1 var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.signal-pipeline {
  position: relative;
  display: grid;
  padding: 2rem 1.4rem;
  border: 1px solid rgba(117, 230, 225, 0.31);
  background: rgba(12, 35, 48, 0.7);
  grid-template-columns: repeat(3, 1fr);
  gap: 0.9rem;
}

.signal-pipeline::before {
  position: absolute;
  top: 50%;
  right: 10%;
  left: 10%;
  border-top: 1px solid rgba(255, 180, 92, 0.5);
  content: "";
}

.pipeline-step {
  position: relative;
  z-index: 1;
  display: grid;
  min-height: 9rem;
  place-items: center;
  padding: 0.65rem;
  color: var(--paper);
  border: 1px solid rgba(244, 240, 231, 0.2);
  background: var(--midnight);
  text-align: center;
}

.pipeline-step::before {
  width: 0.7rem;
  height: 0.7rem;
  margin-bottom: 0.9rem;
  background: var(--amber);
  content: "";
  transform: rotate(45deg);
}

.pipeline-step span {
  font: 600 0.69rem/1.2 var(--mono);
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.boundary-grid {
  display: grid;
  margin-top: 3.4rem;
  border-top: 1px solid rgba(244, 240, 231, 0.2);
  grid-template-columns: repeat(2, 1fr);
}

.boundary-list {
  padding: 1.55rem 2rem 1rem 0;
}

.boundary-list + .boundary-list {
  padding-right: 0;
  padding-left: 2rem;
  border-left: 1px solid rgba(244, 240, 231, 0.2);
}

.boundary-list h3 {
  margin: 0;
  color: var(--cyan);
  font: 600 0.72rem/1 var(--mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.boundary-list--unknown h3 {
  color: var(--amber);
}

.boundary-list ul {
  display: grid;
  gap: 0.8rem;
  margin: 1.25rem 0 0;
  padding: 0;
  list-style: none;
}

.boundary-list li {
  position: relative;
  padding-left: 1.45rem;
  color: rgba(244, 240, 231, 0.72);
  font-size: 1.12rem;
  line-height: 1.3;
}

.boundary-list li::before {
  position: absolute;
  top: 0.55rem;
  left: 0;
  width: 0.44rem;
  height: 0.44rem;
  background: var(--cyan);
  content: "";
  transform: rotate(45deg);
}

.boundary-list--unknown li::before {
  background: var(--amber);
}

.boundary-note {
  max-width: 58rem;
  margin: 2.3rem 0 0;
  padding: 1rem 1.1rem;
  color: rgba(244, 240, 231, 0.58);
  border-left: 2px solid var(--amber);
  background: rgba(244, 240, 231, 0.06);
  font: 0.78rem/1.48 var(--mono);
}

.conclusion {
  max-width: 56rem;
  margin-inline: auto;
  text-align: center;
}

.conclusion h2,
.conclusion > p {
  margin-inline: auto;
}

.conclusion .hero-source {
  justify-content: center;
}

.sources-section {
  padding-bottom: 4.8rem;
}

.source-intro {
  max-width: var(--text-measure);
  margin: 0;
  color: var(--ink-soft);
  font-size: 1.2rem;
}

.source-list {
  display: grid;
  margin: 2.8rem 0 0;
  border-top: 1px solid var(--line);
}

.source-item {
  display: grid;
  padding-block: 1.3rem 1.45rem;
  border-bottom: 1px solid var(--line);
  grid-template-columns: 3.6rem minmax(13rem, 0.55fr) minmax(15rem, 1fr) minmax(12rem, 0.8fr);
  gap: 1.1rem;
}

.source-id {
  color: var(--amber-deep);
  font: 600 0.78rem/1.2 var(--mono);
}

.source-title {
  margin: 0;
  font: 600 1.05rem/1.18 var(--display);
  letter-spacing: -0.025em;
}

.source-meta {
  margin-top: 0.42rem;
  color: var(--ink-soft);
  font: 0.65rem/1.35 var(--mono);
}

.source-detail {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.99rem;
  line-height: 1.35;
}

.source-detail strong {
  display: block;
  margin-bottom: 0.22rem;
  color: var(--ink);
  font: 600 0.65rem/1.2 var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-footer {
  color: rgba(244, 240, 231, 0.64);
  background: var(--midnight);
}

.site-footer .container {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 2rem;
  padding-block: 2rem 2.5rem;
}

.footer-note {
  max-width: 30rem;
  font: 0.72rem/1.45 var(--mono);
}

.footer-updated,
.no-script {
  margin-top: 0.55rem;
  color: rgba(244, 240, 231, 0.62);
  font: 0.66rem/1.35 var(--mono);
}

.footer-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 1rem;
  font: 0.68rem/1.2 var(--mono);
}

.footer-meta a {
  color: rgba(244, 240, 231, 0.68);
  text-decoration: none;
}

.footer-meta a:hover {
  color: var(--cyan);
}

.back-to-top {
  display: inline-grid;
  width: 2.1rem;
  height: 2.1rem;
  place-items: center;
  color: var(--midnight) !important;
  background: var(--cyan);
  font-size: 1rem;
}

.back-to-top:hover {
  color: var(--midnight) !important;
  background: var(--amber);
}

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

.sr-only {
  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;
}

@media (max-width: 900px) {
  .hero-grid,
  .signal-layout,
  .share-layout {
    grid-template-columns: 1fr;
  }

  .hero-grid {
    gap: 2rem;
  }

  .hero-figure {
    min-height: 28rem;
  }

  .signal-copy-panel {
    max-width: 42rem;
  }

  .share-layout {
    gap: 2.6rem;
  }

  .source-item {
    grid-template-columns: 3.6rem minmax(0, 1fr) minmax(0, 1fr);
  }

  .source-item .source-detail:last-child {
    grid-column: 2 / -1;
    padding-top: 0.4rem;
  }
}

@media (max-width: 680px) {
  body {
    font-size: 1.07rem;
  }

  .container {
    width: min(calc(100% - 2rem), var(--measure));
  }

  .site-header .container {
    min-height: 3.8rem;
  }

  .brand {
    font-size: 0.68rem;
  }

  .site-nav-list {
    gap: 0.7rem;
  }

  .site-nav a,
  .language-link {
    font-size: 0.62rem;
  }

  .language-link {
    padding-left: 0.7rem;
  }

  .hero-grid {
    min-height: auto;
    padding-block: 4rem 2.9rem;
  }

  .hero h1 {
    max-width: 10ch;
    font-size: clamp(3.25rem, 15vw, 5.3rem);
  }

  .hero-deck {
    margin-top: 1.55rem;
    font-size: 1.25rem;
  }

  .hero-figure {
    min-height: 22rem;
  }

  .hero-satellite {
    width: 5.8rem;
    height: 3rem;
  }

  .hero-satellite--one {
    top: 10%;
    right: 10%;
  }

  .hero-satellite--two {
    top: 31%;
    right: 38%;
  }

  .hero-caption {
    left: 5%;
    font-size: 0.88rem;
  }

  .hero-stats {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .stat,
  .stat:first-child {
    min-height: auto;
    padding: 0.9rem 0;
    border-top: 1px solid var(--line-dark);
    border-left: 0;
  }

  .stat:first-child {
    border-top: 0;
  }

  .section {
    padding-block: 5rem;
  }

  .section-heading {
    margin-bottom: 2.25rem;
  }

  .section-heading h2 {
    font-size: clamp(2.35rem, 11vw, 4.2rem);
  }

  .section-heading p {
    font-size: 1.2rem;
  }

  .signal-stage {
    min-height: 26rem;
  }

  .signal-caption {
    display: block;
  }

  .signal-caption strong {
    display: block;
    margin-bottom: 0.25rem;
  }

  .satellite {
    width: 4.5rem;
    height: 2.35rem;
    font-size: 0.52rem;
  }

  .satellite::before,
  .satellite::after {
    width: 1.15rem;
  }

  .satellite--a {
    top: 16%;
    left: 12%;
  }

  .satellite--b {
    top: 27%;
    right: 10%;
  }

  .satellite--c {
    top: 48%;
    left: 40%;
  }

  .bearing--a {
    top: 28%;
    left: 18%;
    width: 57%;
  }

  .bearing--b {
    top: 38%;
    left: 68%;
    width: 64%;
  }

  .uncertainty {
    top: 63%;
    left: 61%;
  }

  .source-point {
    top: 63%;
    left: 61%;
  }

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

  .comparison-card {
    min-height: auto;
    padding: 1.2rem 0 2.4rem;
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .comparison-card:first-child {
    border-top: 0;
  }

  .comparison-visual {
    height: 8.5rem;
    margin-top: 1rem;
  }

  .timeline::before {
    left: 0.42rem;
  }

  .timeline-event {
    min-height: 0;
    padding-bottom: 2rem;
    grid-template-columns: 1.2rem minmax(0, 1fr);
    gap: 1.1rem;
  }

  .timeline-date {
    grid-column: 2;
    grid-row: 1;
    padding-top: 0;
    text-align: left;
  }

  .timeline-marker {
    grid-column: 1;
    grid-row: 1 / span 2;
    margin-top: 0.13rem;
  }

  .timeline-copy {
    grid-column: 2;
    grid-row: 2;
  }

  .timeline-copy h3 {
    margin-top: 0.35rem;
  }

  .signal-pipeline {
    padding: 1.2rem;
    grid-template-columns: 1fr;
  }

  .signal-pipeline::before {
    top: 10%;
    right: auto;
    bottom: 10%;
    left: 50%;
    border-top: 0;
    border-left: 1px solid rgba(255, 180, 92, 0.5);
  }

  .pipeline-step {
    min-height: 5.2rem;
  }

  .pipeline-step::before {
    margin-bottom: 0.4rem;
  }

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

  .boundary-list,
  .boundary-list + .boundary-list {
    padding: 1.35rem 0;
    border-left: 0;
  }

  .boundary-list + .boundary-list {
    border-top: 1px solid rgba(244, 240, 231, 0.2);
  }

  .source-item,
  .source-item .source-detail:last-child {
    display: block;
    padding: 1.15rem 0;
  }

  .source-id {
    display: inline-block;
    margin-bottom: 0.6rem;
  }

  .source-detail {
    margin-top: 0.95rem;
  }

  .site-footer .container {
    display: block;
  }

  .footer-meta {
    justify-content: flex-start;
    margin-top: 1.35rem;
  }
}

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

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