:root {
  --midnight: #071426;
  --midnight-soft: #0B1D32;
  --ridge: #132B46;
  --ridge-light: #1E4664;
  --reading-white: #F3F7FF;
  --ink: #C5D3E4;
  --muted: #91A8C0;
  --line: rgba(177, 201, 226, .22);
  --fiber: #52D9FF;
  --radio: #FFC857;
  --millimeter: #B892FF;
  --satellite: #FF7A7A;
  --optical: #A8FFD8;
  --blue: #6B9CFF;
  --danger: #FF7A7A;
  --success: #A8FFD8;
  --display: "Avenir Next", "Trebuchet MS", sans-serif;
  --reading: Charter, "Bitstream Charter", Georgia, serif;
  --utility: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --radius: 24px;
  --shadow: 0 35px 100px rgba(0, 0, 0, .32), 0 5px 20px rgba(0, 0, 0, .2);
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: dark;
  scroll-behavior: smooth;
  background: var(--midnight);
}

body {
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background:
    radial-gradient(circle at 18% 3%, rgba(68, 94, 185, .23), transparent 31rem),
    radial-gradient(circle at 90% 30%, rgba(24, 119, 137, .12), transparent 36rem),
    linear-gradient(180deg, #071426 0%, #08182A 48%, #06111F 100%);
  font-family: var(--reading);
  font-size: 19px;
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
}

body::before {
  position: fixed;
  z-index: -1;
  inset: 0;
  content: "";
  opacity: .22;
  background-image:
    repeating-radial-gradient(ellipse at 10% 25%, transparent 0 72px, rgba(110, 146, 182, .14) 73px 74px, transparent 75px 88px),
    repeating-radial-gradient(ellipse at 90% 70%, transparent 0 105px, rgba(110, 146, 182, .09) 106px 107px, transparent 108px 121px);
  pointer-events: none;
}

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

a {
  color: inherit;
}

button,
input,
select {
  font: inherit;
}

button,
select,
input[type="range"] {
  min-height: 44px;
}

:focus-visible {
  outline: 4px solid var(--radio);
  outline-offset: 4px;
  border-radius: 5px;
}

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

.skip-link {
  position: fixed;
  z-index: 200;
  top: 12px;
  left: 12px;
  padding: 12px 18px;
  color: var(--midnight);
  background: var(--reading-white);
  border-radius: 7px;
  font-family: var(--display);
  font-weight: 800;
  transform: translateY(-150%);
  transition: transform .2s ease;
}

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

.site-header {
  position: relative;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1460px, calc(100% - 64px));
  margin: 0 auto;
  padding: 28px 0;
  font-family: var(--display);
}

.site-mark {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--reading-white);
  font-size: .79rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-decoration: none;
  text-transform: uppercase;
}

.site-mark__dot {
  width: 10px;
  height: 10px;
  background: var(--fiber);
  border-radius: 50%;
  box-shadow: 0 0 18px var(--fiber);
}

.motion-toggle {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 48px;
  padding: 9px 16px;
  color: var(--reading-white);
  background: rgba(15, 39, 63, .88);
  border: 1px solid rgba(177, 201, 226, .4);
  border-radius: 999px;
  cursor: pointer;
  font-weight: 700;
}

.motion-toggle:hover {
  background: var(--ridge-light);
}

.motion-toggle__icon {
  width: 13px;
  height: 15px;
  border-right: 4px solid currentColor;
  border-left: 4px solid currentColor;
}

.motion-toggle[aria-pressed="true"] .motion-toggle__icon {
  width: 0;
  height: 0;
  border: 8px solid transparent;
  border-right: 0;
  border-left: 13px solid currentColor;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(290px, .65fr);
  gap: clamp(2rem, 7vw, 8rem);
  align-items: end;
  width: min(1380px, calc(100% - 64px));
  min-height: min(82vh, 850px);
  margin: 0 auto;
  padding: clamp(4rem, 12vh, 9rem) 0 clamp(4rem, 11vh, 8rem);
}

.eyebrow {
  margin: 0 0 .9rem;
  color: var(--fiber);
  font-family: var(--utility);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 11ch;
  margin: 0;
  color: var(--reading-white);
  font-family: var(--display);
  font-size: clamp(4.2rem, 10vw, 9.5rem);
  font-weight: 700;
  letter-spacing: -.065em;
  line-height: .83;
}

.hero__subtitle {
  max-width: 24ch;
  margin: 1.5rem 0 0;
  color: var(--optical);
  font-family: var(--display);
  font-size: clamp(1.45rem, 3vw, 2.6rem);
  font-weight: 650;
  line-height: 1.08;
}

.hero__lede {
  max-width: 46ch;
  margin: 1.6rem 0 0;
  font-size: clamp(1.1rem, 1.4vw, 1.3rem);
}

.start-link,
.back-to-top {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-top: 1.7rem;
  padding: 8px 0;
  color: var(--reading-white);
  border-bottom: 2px solid var(--fiber);
  font-family: var(--display);
  font-weight: 800;
  text-decoration: none;
}

.start-link span,
.back-to-top span {
  color: var(--fiber);
  font-size: 1.35em;
}

.hero__question {
  position: relative;
  padding: 1.7rem 1.8rem 1.8rem;
  background: rgba(16, 42, 67, .72);
  border: 1px solid var(--line);
  border-left: 4px solid var(--satellite);
  border-radius: 0 var(--radius) var(--radius) 0;
  box-shadow: var(--shadow);
}

.hero__question span {
  color: var(--satellite);
  font-family: var(--utility);
  font-size: .68rem;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.hero__question p {
  margin: .65rem 0 0;
  color: var(--reading-white);
  font-size: clamp(1.25rem, 2vw, 1.75rem);
  line-height: 1.32;
}

.journey-shell {
  display: grid;
  grid-template-columns: minmax(570px, 1.12fr) minmax(430px, .88fr);
  gap: clamp(2.5rem, 5vw, 6.5rem);
  width: min(1540px, calc(100% - 48px));
  margin: 0 auto;
}

.landscape-stage {
  position: sticky;
  z-index: 5;
  top: 2.5rem;
  align-self: start;
  margin: 0;
  padding: 1rem;
  background: rgba(8, 25, 43, .88);
  border: 1px solid var(--line);
  border-radius: 32px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.landscape-stage svg {
  display: block;
  width: 100%;
  height: auto;
  max-height: 70vh;
  border-radius: 22px;
}

.landscape-stage text {
  fill: #D8E6F4;
  font-family: var(--utility);
  font-size: 16px;
  letter-spacing: .03em;
}

.terrain {
  opacity: 0;
  transition: opacity .5s ease;
}

body[data-landscape="city"] .terrain--city,
body[data-landscape="rural"] .terrain--rural,
body[data-landscape="mountain"] .terrain--mountain,
body[data-landscape="island"] .terrain--island,
body[data-landscape="disaster"] .terrain--mountain {
  opacity: 1;
}

.sea {
  opacity: .35;
  transition: opacity .4s ease;
}

body[data-landscape="island"] .sea,
body[data-landscape="disaster"] .sea {
  opacity: 1;
}

.relay path,
.relay circle,
.relay ellipse {
  fill: none;
  stroke: #DCE8F6;
  stroke-width: 5;
}

.route {
  opacity: .08;
  stroke-width: 5;
  transition: opacity .35s ease, stroke-width .35s ease;
}

.route.is-active {
  opacity: .22;
  stroke-width: 7;
}

.journey-revealed .route.is-active {
  opacity: 1;
}

.route--fiber {
  stroke: var(--fiber);
}

.route--microwave {
  stroke: var(--radio);
  stroke-dasharray: 16 10;
}

.route--eband {
  stroke: var(--millimeter);
  stroke-dasharray: 3 11;
}

.route--leo,
.route--geo {
  stroke: var(--satellite);
  stroke-dasharray: 30 12;
}

.route--optical {
  stroke: var(--optical);
  stroke-width: 3;
  stroke-dasharray: 7 6;
}

.packet {
  fill: var(--packet-color, var(--fiber));
  opacity: .3;
  filter: drop-shadow(0 0 8px var(--packet-color, var(--fiber)));
  transition: fill .25s ease, opacity .25s ease;
}

.journey-revealed .packet {
  opacity: 1;
}

.obstruction-marker {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity .2s ease, transform .2s ease;
}

.obstruction-marker.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.landscape-stage figcaption {
  display: grid;
  gap: .2rem;
  padding: 1rem .6rem .35rem;
}

.landscape-stage figcaption strong {
  color: var(--reading-white);
  font-family: var(--display);
  font-size: 1rem;
  line-height: 1.4;
}

.landscape-stage figcaption span {
  color: var(--muted);
  font-size: .78rem;
  line-height: 1.45;
}

.route-key {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem 1rem;
  padding: .6rem .6rem .35rem;
  color: var(--muted);
  font-family: var(--utility);
  font-size: .68rem;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.route-key span::before {
  display: inline-block;
  width: 22px;
  height: 3px;
  margin-right: 7px;
  vertical-align: middle;
  content: "";
  background: currentColor;
}

.key-fiber { color: var(--fiber); }
.key-radio { color: var(--radio); }
.key-satellite { color: var(--satellite); }
.key-optical { color: var(--optical); }
.key-radio::before { background: repeating-linear-gradient(90deg, currentColor 0 5px, transparent 5px 8px) !important; }
.key-satellite::before { background: repeating-linear-gradient(90deg, currentColor 0 9px, transparent 9px 13px) !important; }
.key-optical::before { height: 1px !important; }

.story-flow {
  min-width: 0;
}

.chapter {
  position: relative;
  min-height: 84vh;
  padding: clamp(4.5rem, 12vh, 8rem) 0 clamp(5rem, 12vh, 9rem);
  border-top: 1px solid var(--line);
}

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

.chapter-marker {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 2rem;
  color: var(--muted);
  font-family: var(--utility);
  text-transform: uppercase;
}

.chapter-marker span {
  font-size: .65rem;
  letter-spacing: .16em;
}

.chapter-marker strong {
  color: var(--line);
  font-family: var(--display);
  font-size: clamp(3rem, 6vw, 5rem);
  line-height: 1;
}

.chapter h2,
.closing h2,
.sources h2 {
  max-width: 16ch;
  margin: 0;
  color: var(--reading-white);
  font-family: var(--display);
  font-size: clamp(2.35rem, 4.6vw, 4.8rem);
  font-weight: 650;
  letter-spacing: -.045em;
  line-height: .98;
}

.chapter-lede {
  max-width: 40ch;
  margin: 1.5rem 0 2rem;
  font-size: 1.08rem;
}

.truth-card {
  margin: 2rem 0;
  padding: 1.25rem 1.4rem;
  color: var(--reading-white);
  background: rgba(82, 217, 255, .08);
  border: 1px solid rgba(82, 217, 255, .35);
  border-radius: 16px;
}

.truth-card p {
  margin: 0;
}

.action-button {
  min-height: 50px;
  padding: .75rem 1.1rem;
  color: var(--midnight);
  background: var(--radio);
  border: 0;
  border-radius: 10px;
  cursor: pointer;
  font-family: var(--display);
  font-weight: 800;
  box-shadow: 0 8px 24px rgba(255, 200, 87, .16);
}

.action-button:hover {
  background: #FFD77F;
}

.action-button--quiet {
  color: var(--reading-white);
  background: transparent;
  border: 1px solid var(--radio);
  box-shadow: none;
}

.action-button--quiet:hover {
  color: var(--midnight);
}

fieldset {
  min-width: 0;
}

.choice-fieldset,
.condition-panel {
  margin: 2rem 0 1rem;
  padding: 0;
  border: 0;
}

.choice-fieldset legend,
.condition-panel legend {
  margin-bottom: .8rem;
  color: var(--reading-white);
  font-family: var(--display);
  font-size: 1rem;
  font-weight: 750;
}

.choice-strip,
.check-strip {
  display: flex;
  flex-wrap: wrap;
  gap: .55rem;
}

.choice-strip label,
.check-strip label {
  position: relative;
  flex: 1 1 125px;
  cursor: pointer;
}

.choice-strip input,
.check-strip input,
.technology-choice input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.choice-strip span,
.check-strip span {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: .55rem .7rem;
  color: var(--ink);
  background: rgba(18, 43, 70, .7);
  border: 1px solid var(--line);
  border-radius: 9px;
  font-family: var(--display);
  font-size: .82rem;
  font-weight: 700;
  line-height: 1.2;
  text-align: center;
}

.choice-strip input:checked + span,
.check-strip input:checked + span {
  color: var(--midnight);
  background: var(--fiber);
  border-color: var(--fiber);
}

.choice-strip input:focus-visible + span,
.check-strip input:focus-visible + span,
.technology-choice input:focus-visible + span {
  outline: 4px solid var(--radio);
  outline-offset: 3px;
}

.result-line {
  margin: 1rem 0 0;
  padding: 1rem 1.1rem;
  color: var(--reading-white);
  background: rgba(82, 217, 255, .07);
  border-left: 3px solid var(--fiber);
  border-radius: 0 10px 10px 0;
}

.technology-choices {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .6rem;
}

.technology-choice {
  position: relative;
  display: block;
  cursor: pointer;
}

.technology-choice span {
  display: grid;
  align-content: center;
  min-height: 86px;
  padding: .8rem 1rem .8rem 1.3rem;
  background: rgba(18, 43, 70, .7);
  border: 1px solid var(--line);
  border-left: 4px solid var(--technology-color, var(--fiber));
  border-radius: 12px;
}

.technology-choice strong {
  color: var(--reading-white);
  font-family: var(--display);
  font-size: .88rem;
  line-height: 1.2;
}

.technology-choice small {
  margin-top: .25rem;
  color: var(--muted);
  font-size: .7rem;
  line-height: 1.35;
}

.technology-choice input:checked + span {
  background: rgba(41, 78, 111, .92);
  border-color: var(--technology-color, var(--fiber));
  box-shadow: inset 0 0 0 1px var(--technology-color, var(--fiber));
}

.technology-choice--fiber { --technology-color: var(--fiber); }
.technology-choice--microwave { --technology-color: var(--radio); }
.technology-choice--eband { --technology-color: var(--millimeter); }
.technology-choice--leo, .technology-choice--geo { --technology-color: var(--satellite); }
.technology-choice--optical { --technology-color: var(--optical); }

.technology-readout {
  margin-top: 1rem;
  padding: 1.25rem;
  background: rgba(6, 17, 31, .7);
  border: 1px solid var(--line);
  border-radius: 16px;
}

.technology-readout__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}

.technology-readout__head p {
  display: flex;
  align-items: center;
  gap: .65rem;
  margin: 0;
  color: var(--reading-white);
  font-family: var(--display);
}

.status-dot {
  width: 12px;
  height: 12px;
  flex: 0 0 auto;
  background: var(--technology-color, var(--fiber));
  border-radius: 50%;
  box-shadow: 0 0 15px var(--technology-color, var(--fiber));
}

.fit-badge {
  padding: .3rem .55rem;
  color: var(--midnight);
  background: var(--success);
  border-radius: 999px;
  font-family: var(--utility);
  font-size: .6rem;
  font-weight: 800;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.fit-badge[data-rating="difficult"],
.fit-badge[data-rating="conditional"] {
  background: var(--radio);
}

.fit-badge[data-rating="impractical"],
.fit-badge[data-rating="unavailable-now"] {
  background: var(--danger);
}

.comparison-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin: .8rem 0;
}

.comparison-grid div {
  min-width: 0;
  padding: .65rem .75rem;
  border-bottom: 1px solid rgba(177, 201, 226, .13);
}

.comparison-grid dt {
  color: var(--muted);
  font-family: var(--utility);
  font-size: .58rem;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.comparison-grid dd {
  margin: .2rem 0 0;
  color: var(--reading-white);
  font-size: .8rem;
  line-height: 1.4;
}

.technology-readout > p {
  margin: .8rem .7rem .2rem;
  color: var(--ink);
  font-size: .82rem;
  line-height: 1.48;
}

.old-links {
  margin-top: 1rem;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.old-links summary {
  padding: 1rem 0;
  color: var(--reading-white);
  cursor: pointer;
  font-family: var(--display);
  font-weight: 750;
}

.old-links p {
  margin: 0 0 1.2rem;
}

.race-picker .action-button {
  margin-top: 1rem;
}

.race-grid {
  display: grid;
  gap: 1rem;
  margin-top: 1.4rem;
}

.race-lane {
  padding: 1rem;
  background: rgba(18, 43, 70, .66);
  border: 1px solid var(--line);
  border-radius: 12px;
}

.race-lane__head,
.race-lane__foot {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}

.race-lane__head {
  align-items: baseline;
  color: var(--reading-white);
  font-family: var(--display);
}

.race-lane__head span,
.race-lane__foot {
  color: var(--muted);
  font-family: var(--utility);
  font-size: .63rem;
}

.delay-track {
  display: flex;
  width: var(--total-share);
  min-width: 12%;
  height: 24px;
  margin: .65rem 0;
  overflow: hidden;
  background: rgba(0, 0, 0, .25);
  border-radius: 5px;
  transform-origin: left center;
  animation: grow-track .8s ease both;
}

.delay-segment {
  width: var(--part-share);
  min-width: 3px;
  height: 100%;
}

.delay-segment--propagation { background: var(--fiber); }
.delay-segment--geometry { background: var(--satellite); }
.delay-segment--routing { background: var(--radio); }
.delay-segment--queuing { background: var(--millimeter); }
.delay-segment--retransmission { background: #F3F7FF; }

@keyframes grow-track {
  from { transform: scaleX(.03); opacity: .4; }
  to { transform: scaleX(1); opacity: 1; }
}

.model-note {
  color: var(--muted);
  font-size: .75rem;
  line-height: 1.45;
}

.condition-panel {
  padding: 1.2rem;
  background: rgba(18, 43, 70, .64);
  border: 1px solid var(--line);
  border-radius: 16px;
}

.condition-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem 1.4rem;
}

.condition-grid label {
  display: grid;
  gap: .35rem;
}

.condition-grid label > span {
  display: flex;
  justify-content: space-between;
  color: var(--reading-white);
  font-family: var(--display);
  font-size: .8rem;
  font-weight: 700;
}

.condition-grid output {
  color: var(--fiber);
  font-family: var(--utility);
  font-size: .62rem;
  font-weight: 500;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--fiber);
  cursor: pointer;
}

.obstruction-toggle {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: .75rem;
  align-items: center;
  min-height: 60px;
  margin-top: 1.2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  cursor: pointer;
}

.obstruction-toggle input {
  width: 24px;
  height: 24px;
  accent-color: var(--danger);
}

.obstruction-toggle span {
  display: grid;
}

.obstruction-toggle strong {
  color: var(--reading-white);
  font-family: var(--display);
  font-size: .86rem;
}

.obstruction-toggle small {
  color: var(--muted);
  font-size: .68rem;
}

.weather-result {
  padding: 1.1rem 1.2rem;
  background: rgba(168, 255, 216, .08);
  border-left: 4px solid var(--success);
  border-radius: 0 12px 12px 0;
}

.weather-result[data-status="degraded"] {
  background: rgba(255, 200, 87, .08);
  border-color: var(--radio);
}

.weather-result[data-status="down"] {
  background: rgba(255, 122, 122, .09);
  border-color: var(--danger);
}

.weather-result strong {
  color: var(--reading-white);
  font-family: var(--display);
}

.weather-result p {
  margin: .4rem 0 0;
  font-size: .82rem;
  line-height: 1.45;
}

.design-controls {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 2rem;
}

.design-controls label {
  display: grid;
  gap: .4rem;
  color: var(--reading-white);
  font-family: var(--display);
  font-size: .8rem;
  font-weight: 750;
}

.design-controls select {
  width: 100%;
  padding: .6rem 2.2rem .6rem .75rem;
  color: var(--reading-white);
  background: #112C47;
  border: 1px solid rgba(177, 201, 226, .46);
  border-radius: 9px;
}

.design-result {
  margin-top: 1rem;
  padding: 1.2rem;
  background: rgba(82, 217, 255, .07);
  border: 1px solid rgba(82, 217, 255, .27);
  border-radius: 15px;
}

.design-score {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: .6rem;
}

.design-score span {
  display: grid;
  gap: .25rem;
  color: var(--muted);
  font-family: var(--utility);
  font-size: .58rem;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.design-score strong {
  color: var(--success);
  font-family: var(--display);
  font-size: .82rem;
  letter-spacing: 0;
}

.design-score strong[data-score="exceeds"],
.design-score strong[data-score="limited"] {
  color: var(--danger);
}

.design-score strong[data-score="tradeoff"],
.design-score strong[data-score="moderate"] {
  color: var(--radio);
}

.design-result p {
  margin: 1rem 0 0;
  color: var(--reading-white);
  font-size: .88rem;
  line-height: 1.48;
}

.reading-column {
  width: min(760px, calc(100% - 48px));
  margin-right: auto;
  margin-left: auto;
}

.closing,
.sources {
  padding: clamp(6rem, 14vh, 11rem) 0;
}

.closing {
  text-align: center;
}

.closing h2 {
  max-width: 18ch;
  margin: 0 auto;
}

.closing p:not(.eyebrow) {
  max-width: 42ch;
  margin: 1.5rem auto 0;
  font-size: 1.15rem;
}

.sources {
  border-top: 1px solid var(--line);
}

.sources h2 {
  max-width: 18ch;
  font-size: clamp(2.1rem, 4vw, 3.7rem);
}

.sources ol {
  margin: 2rem 0 0;
  padding-left: 1.4rem;
}

.sources li {
  margin: 0 0 1rem;
  padding-left: .4rem;
  color: var(--muted);
  font-size: .84rem;
}

.sources a {
  color: var(--fiber);
  text-underline-offset: 3px;
}

footer {
  display: grid;
  gap: .35rem;
  padding: 4rem 24px 5rem;
  color: var(--muted);
  border-top: 1px solid var(--line);
  font-family: var(--utility);
  font-size: .68rem;
  text-align: center;
}

footer p {
  margin: 0;
}

footer a {
  color: var(--reading-white);
}

.noscript-note {
  margin: 0;
  padding: 1rem;
  color: var(--midnight);
  background: var(--radio);
  font-family: var(--display);
  font-weight: 750;
  text-align: center;
}

.is-paused *,
.is-paused *::before,
.is-paused *::after {
  animation-play-state: paused !important;
  transition-duration: .001ms !important;
}

@media (max-width: 1180px) {
  .journey-shell {
    grid-template-columns: minmax(470px, 1fr) minmax(390px, .88fr);
    gap: 2.3rem;
  }
  .landscape-stage {
    top: 1rem;
  }
  .technology-choices {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 900px) {
  .site-header,
  .hero {
    width: min(100% - 36px, 760px);
  }
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 5rem;
  }
  .hero h1 {
    font-size: clamp(4rem, 17vw, 7.8rem);
  }
  .hero__question {
    max-width: 560px;
  }
  .journey-shell {
    display: block;
    width: min(100% - 28px, 760px);
  }
  .landscape-stage {
    position: relative;
    top: auto;
    margin-bottom: 2rem;
    padding: .65rem;
  }
  .landscape-stage svg {
    max-height: none;
  }
  .chapter {
    min-height: auto;
    padding-top: 5.5rem;
    padding-bottom: 6rem;
  }
  .chapter h2 {
    font-size: clamp(2.5rem, 9vw, 4.7rem);
  }
}

@media (max-width: 620px) {
  body {
    font-size: 18px;
  }
  .site-header {
    width: calc(100% - 28px);
    padding-top: 18px;
  }
  .site-mark {
    font-size: .65rem;
  }
  .motion-toggle {
    min-height: 46px;
    padding: 8px 12px;
    font-size: .75rem;
  }
  .hero {
    width: calc(100% - 32px);
    gap: 2.8rem;
    padding-top: 4rem;
  }
  .hero h1 {
    font-size: clamp(3.7rem, 19vw, 5.5rem);
  }
  .hero__subtitle {
    font-size: 1.55rem;
  }
  .journey-shell {
    width: calc(100% - 20px);
  }
  .landscape-stage {
    border-radius: 20px;
  }
  .landscape-stage svg {
    border-radius: 14px;
  }
  .landscape-stage figcaption {
    padding-right: .35rem;
    padding-left: .35rem;
  }
  .story-flow {
    width: calc(100% - 16px);
    margin: 0 auto;
  }
  .chapter-marker strong {
    font-size: 3rem;
  }
  .technology-choices,
  .condition-grid,
  .design-controls,
  .comparison-grid {
    grid-template-columns: 1fr;
  }
  .technology-choice span {
    min-height: 76px;
  }
  .technology-readout__head {
    align-items: flex-start;
    flex-direction: column;
  }
  .comparison-grid div {
    padding-right: .35rem;
    padding-left: .35rem;
  }
  .race-lane__head,
  .race-lane__foot {
    align-items: flex-start;
    flex-direction: column;
    gap: .15rem;
  }
  .design-score {
    grid-template-columns: 1fr;
  }
  .reading-column {
    width: calc(100% - 32px);
  }
}

@media (max-width: 420px) {
  .site-mark span:last-child {
    max-width: 10ch;
    line-height: 1.15;
  }
  .motion-toggle {
    font-size: .7rem;
  }
  .hero {
    padding-top: 3rem;
  }
  .hero h1 {
    font-size: 18vw;
  }
  .hero__question {
    padding: 1.25rem;
  }
  .landscape-stage {
    padding: .4rem;
  }
  .landscape-stage figcaption strong {
    font-size: .88rem;
  }
  .route-key {
    gap: .35rem .7rem;
    font-size: .58rem;
  }
  .chapter h2 {
    font-size: 2.45rem;
  }
  .choice-strip label,
  .check-strip label {
    flex-basis: calc(50% - .55rem);
  }
  .choice-strip span,
  .check-strip span {
    min-height: 50px;
  }
  .truth-card,
  .technology-readout,
  .condition-panel,
  .design-result {
    padding: 1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: .001ms !important;
  }
}