:root {
  --bg: #080d15;
  --panel: #101925;
  --line: #26323b;
  --text: #eff3ed;
  --muted: #99a7b2;
  --lime: #c0ef94;
  --teal: #6cbdb7;
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text);
  background: var(--bg);
  font-synthesis: none;
  color-scheme: dark;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
}
button,
input {
  font: inherit;
}
button {
  color: inherit;
  cursor: pointer;
}
button:disabled {
  cursor: default;
  opacity: 0.35;
}
button {
  border: 0;
}
button:focus-visible,
a:focus-visible,
input:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 5px;
}
button,
a {
  -webkit-tap-highlight-color: transparent;
}
button {
  transition:
    background 0.2s,
    border-color 0.2s,
    color 0.2s,
    transform 0.25s var(--ease);
}
button:hover:not(:disabled) {
  color: var(--lime);
}
button:active:not(:disabled) {
  transform: translateY(1px);
}
.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;
}
.skip {
  position: fixed;
  top: -100px;
  left: 20px;
  background: var(--lime);
  color: var(--bg);
  padding: 15px;
  z-index: 100;
}
.skip:focus {
  top: 10px;
}
.course-shell {
  position: relative;
  min-height: 100dvh;
  max-width: 2400px;
  margin: auto;
  padding: 0 4.6vw;
  background: radial-gradient(ellipse at 76% 45%, #15282b55, transparent 49%);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.course-shell:before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.13;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.88' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Cpath fill='%23fff' filter='url(%23n)' opacity='.2' d='M0 0h180v180H0z'/%3E%3C/svg%3E");
  z-index: 0;
}
.course-shell > * {
  position: relative;
}
.topbar {
  height: 104px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
  gap: 20px;
}
.brand {
  background: none;
  display: flex;
  align-items: center;
  gap: 12px;
  text-align: left;
  letter-spacing: 3.5px;
  font-size: 20px;
  font-weight: 700;
  padding: 0;
}
.brand img {
  width: 43px;
  height: 43px;
}
.brand-sub {
  display: block;
  font-size: 9px;
  letter-spacing: 5px;
  font-weight: 400;
  margin-top: 4px;
}
.course-label {
  color: #81909c;
  font-size: 9px;
  letter-spacing: 2.2px;
}
.course-label span {
  padding: 0 18px;
  color: #485660;
}
.top-actions {
  display: flex;
  align-items: center;
  gap: 20px;
}
.icon-button {
  background: transparent;
  border: 1px solid #34404b;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  font-size: 15px;
  color: var(--muted);
}
.map-button {
  display: flex;
  align-items: center;
  gap: 12px;
  background: transparent;
  font-size: 12px;
}
.map-icon {
  font-size: 23px;
  color: var(--lime);
}
.key {
  border: 1px solid var(--line);
  padding: 4px 6px;
  font-size: 9px;
  color: var(--muted);
  margin-left: 10px;
}
.section-rail {
  height: 69px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 10px;
  letter-spacing: 1.7px;
  text-transform: uppercase;
  color: var(--muted);
}
.live-dot {
  width: 5px;
  height: 5px;
  background: var(--lime);
  border-radius: 50%;
  box-shadow: 0 0 13px #b9ef9480;
}
.rail-line {
  width: 40px;
  height: 1px;
  background: var(--line);
  margin: 0 5px;
}
.mode-label {
  font-size: 8px;
  letter-spacing: 1.8px;
  opacity: 0.7;
}
.scene {
  flex: 1;
  min-height: 620px;
  padding: 30px 2.3vw 60px;
  position: relative;
  outline: none;
  animation: scene-in 0.65s var(--ease) both;
}
.scene-heading {
  max-width: 560px;
}
.eyebrow {
  font-size: 10px;
  letter-spacing: 2.2px;
  text-transform: uppercase;
  color: var(--lime);
  display: flex;
  align-items: center;
  gap: 11px;
  line-height: 1.5;
}
.eyebrow > span:empty {
  width: 23px;
  height: 1px;
  background: var(--lime);
}
h1 {
  font-size: clamp(44px, 4.6vw, 88px);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.055em;
  margin: 24px 0 26px;
}
h2 {
  font-size: 29px;
  font-weight: 400;
  letter-spacing: -0.025em;
}
h3 {
  font-weight: 400;
}
.intro {
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
  max-width: 510px;
  margin: 0;
}
.primary,
.hero-cta,
.next {
  background: var(--lime);
  color: #14201a;
  padding: 18px 25px;
  font-size: 12px;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 32px;
  border: 1px solid var(--lime);
}
.primary:hover:not(:disabled),
.next:hover {
  background: #d6ffb4;
  color: #101910 !important;
  box-shadow: 0 5px 30px #b7f08515;
}
.primary span,
.next span {
  font-size: 20px;
  font-weight: 400;
}
.secondary {
  background: transparent;
  border: 1px solid #4b5c61;
  padding: 13px 18px;
  font-size: 12px;
}
.text-button {
  padding: 12px;
  background: none;
  font-size: 12px;
  color: var(--muted);
}
.scene-footnote {
  position: absolute;
  bottom: 13px;
  left: 2.3vw;
  right: 2.3vw;
  display: flex;
  align-items: center;
  gap: 9px;
  color: var(--muted);
  font-size: 10px;
  line-height: 1.5;
  min-height: 25px;
}
.instruction-dot {
  width: 5px;
  height: 5px;
  border: 1px solid var(--muted);
  border-radius: 50%;
  flex-shrink: 0;
}
.instruction-dot.done {
  background: var(--lime);
  border-color: var(--lime);
}
.source-note {
  margin-left: auto;
  font-size: 9px;
  color: #90a19d;
  max-width: 40%;
  text-align: right;
}
.player {
  min-height: 108px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--line);
  gap: 25px;
}
.player-progress {
  width: 210px;
  display: flex;
  align-items: center;
  gap: 22px;
}
.player-progress > span {
  font-size: 28px;
  font-weight: 400;
  white-space: nowrap;
}
.player-progress small {
  display: block;
  font-size: 7px;
  letter-spacing: 1.4px;
  margin-top: 4px;
  color: var(--muted);
}
.progress-track {
  height: 2px;
  background: #243037;
  width: 110px;
}
.progress-track i {
  display: block;
  height: 100%;
  background: var(--lime);
  transition: width 0.6s var(--ease);
}
.screen-position {
  text-align: center;
  color: #6d7c87;
  font-size: 11px;
  letter-spacing: 2px;
}
.screen-position > span {
  color: var(--text);
}
.screen-position > div {
  margin-top: 8px;
  font-size: 8px;
  letter-spacing: 1.4px;
  text-transform: uppercase;
}
.player-nav {
  display: flex;
  gap: 25px;
  align-items: center;
}
.previous {
  background: none;
  padding: 15px 0;
  display: flex;
  gap: 12px;
  align-items: center;
  font-size: 16px;
  color: var(--muted);
}
.previous span {
  font-size: 11px;
}
.next {
  min-width: 135px;
  justify-content: space-between;
  padding: 13px 20px;
}
.next[aria-disabled="true"] {
  background: #15231e;
  color: #a4bd91;
  border-color: #43533c;
  box-shadow: none;
}
.save-status {
  font-size: 11px;
  color: #f4c087;
  max-width: 700px;
}
.save-status:not(:empty) {
  padding-bottom: 12px;
}
/* The hero is a living diagram, rendered entirely as lightweight vector geometry. */
.scene-hero {
  display: grid;
  grid-template-columns: 1.02fr 1fr;
  align-items: center;
  padding-top: 5px;
  padding-bottom: 100px;
  min-height: 660px;
}
.hero-copy {
  z-index: 2;
}
.hero-copy h1 {
  font-size: clamp(58px, 5.6vw, 108px);
}
.hero-copy .intro {
  max-width: 465px;
  font-size: 14px;
}
.hero-cta {
  margin-top: 32px;
}
.hero-meta {
  display: flex;
  gap: 30px;
  margin-top: 35px;
  font-size: 9px;
  color: #86958e;
  letter-spacing: 0.5px;
}
.hero-meta b {
  font-size: 12px;
  color: #d0d9cf;
  margin-right: 7px;
  font-weight: 400;
}
.hero-art {
  position: relative;
  align-self: stretch;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 470px;
}
.network-art {
  width: 115%;
  max-width: 760px;
  overflow: visible;
}
.orbital {
  fill: none;
  stroke: #9cbda326;
  stroke-width: 0.7;
  transform-origin: 340px 300px;
  animation: orbit 55s linear infinite;
}
.net-lines {
  fill: none;
  stroke: #73b3a0;
  stroke-opacity: 0.22;
  stroke-width: 0.7;
}
.particle {
  fill: #c4edb0;
  animation: glint 4s var(--delay) infinite;
}
.core {
  fill: #233a36a8;
  stroke: url(#edge);
  stroke-width: 1.2;
  filter: drop-shadow(0 0 20px #84e9c729);
  animation: float 7s ease-in-out infinite;
}
.core .inner {
  fill: #b5ef9120;
  stroke: #b5ef9180;
}
.satellite {
  fill: #112623;
  stroke: #7ea695;
  stroke-width: 1;
  animation: float 7s -3s ease-in-out infinite;
}
.art-tag {
  position: absolute;
  font-size: 8px;
  letter-spacing: 1.9px;
  color: #a6bcb1;
  display: flex;
  align-items: center;
  gap: 8px;
}
.art-tag i {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--lime);
}
.tag-top {
  top: 9%;
  left: 18%;
  border: 1px solid #46605270;
  padding: 11px 13px;
  background: #0b1319c0;
}
.tag-bottom {
  bottom: 9%;
  right: 6%;
  border-top: 1px solid #46605270;
  padding-top: 12px;
}
.tag-bottom b {
  color: #678878;
  margin-left: 13px;
  font-weight: 400;
}
.axis-label {
  position: absolute;
  right: -15px;
  top: 45%;
  writing-mode: vertical-rl;
  font-size: 7px;
  color: #5c786a;
  letter-spacing: 3px;
}
.hero-bottom {
  position: absolute;
  bottom: 58px;
  left: 2.3vw;
  right: 2.3vw;
  display: flex;
  justify-content: space-between;
  color: #80908a;
  letter-spacing: 2px;
  font-size: 8px;
}
.hero-bottom span:first-child {
  color: var(--lime);
}
/* Editorial pause */
.scene-editorial {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10%;
  align-items: center;
}
.learning-objectives {
  border-left: 1px solid var(--lime);
  padding-left: 20px;
  margin-top: 45px;
  max-width: 390px;
}
.learning-objectives p {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.8;
}
.design-art {
  position: relative;
  padding: 55px 0 55px 30px;
}
.design-word {
  font-size: clamp(65px, 7vw, 135px);
  line-height: 1.1;
  letter-spacing: -0.06em;
  position: relative;
  color: #c7d2cc;
}
.design-word em {
  color: var(--lime);
  font-style: normal;
}
.design-outline {
  position: absolute;
  inset: 0 -10px 0 20%;
  border: 1px solid #b8e89c30;
  transform: skewY(-12deg);
  background: linear-gradient(140deg, #b7e79608, transparent);
}
.design-caption {
  display: block;
  font-size: 8px;
  letter-spacing: 2px;
  color: var(--muted);
  margin-top: 35px;
  position: relative;
}
/* Purposeful interactive diagrams */
.scene-heading.compact {
  max-width: 900px;
}
.compact h1 {
  font-size: clamp(40px, 3.5vw, 67px);
  margin: 15px 0;
}
.compact h1 br {
  display: none;
}
.compact .intro {
  max-width: 750px;
  font-size: 13px;
  line-height: 1.8;
}
.detail-panel {
  border-top: 1px solid #4a6258;
  padding: 23px 0 10px;
  min-height: 155px;
  animation: detail-in 0.4s var(--ease);
}
.detail-number {
  font-family: monospace;
  letter-spacing: 1.7px;
  font-size: 9px;
  color: var(--lime);
}
.detail-panel h2 {
  font-size: 25px;
  margin: 12px 0;
}
.detail-panel p {
  font-size: 14px;
  color: #a5b4b9;
  line-height: 1.8;
  max-width: 600px;
  margin: 0;
}
.explore-node {
  background: none;
  position: relative;
  text-align: left;
  border: 1px solid transparent;
}
.explore-node .visited-mark {
  font-size: 12px;
  color: #63816e;
}
.explore-node.visited .visited-mark {
  color: var(--lime);
}
.explore-node.active {
  color: var(--lime);
}
.mission-layout {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  align-items: center;
  gap: 6%;
  margin-top: 15px;
}
.mission-network {
  height: 340px;
  position: relative;
}
.mission-network svg {
  width: 100%;
  height: 100%;
  overflow: visible;
  fill: #13221e;
  stroke: #426551;
}
.mission-line {
  fill: none;
  stroke: #94c8a9;
  stroke-width: 1;
  stroke-dasharray: 8 8;
  animation: flow 20s linear infinite;
}
.mission-network text {
  fill: var(--lime);
  font-size: 10px;
  letter-spacing: 3px;
  stroke: none;
}
.mission-network .explore-node {
  position: absolute;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 135px;
  height: 90px;
  background: #101a20ef;
  border: 1px solid #466657;
  transform: translate(-50%, -50%);
  gap: 10px;
  font-size: 16px;
  box-shadow: 0 0 45px #060d1370;
}
.mission-network .explore-node:nth-of-type(1) {
  left: 15%;
  top: 27%;
}
.mission-network .explore-node:nth-of-type(2) {
  left: 50%;
  top: 80%;
}
.mission-network .explore-node:nth-of-type(3) {
  left: 85%;
  top: 27%;
}
.mission-network .node-num {
  font-size: 9px;
  color: var(--lime);
  font-family: monospace;
}
.mission-network .visited-mark {
  position: absolute;
  right: 10px;
  top: 10px;
}
.mission-network .active {
  background: #1b3025;
  border-color: var(--lime);
  box-shadow: 0 0 55px #a5e78c13;
}
.process {
  display: flex;
  justify-content: space-between;
  position: relative;
  margin: 35px 0 15px;
  padding: 25px 25px 0;
  gap: 15px;
}
.process .explore-node {
  display: flex;
  flex: 1;
  flex-direction: column;
  align-items: center;
  gap: 30px;
  text-align: center;
  padding: 5px 0 15px;
  z-index: 1;
}
.process .visited-mark {
  position: absolute;
  right: 12%;
  top: 0;
}
.process-connector {
  position: absolute;
  left: 10%;
  right: 10%;
  top: 75px;
  height: 1px;
  background: linear-gradient(90deg, #66815b, #c0ef94, #66815b);
}
.cube {
  height: 86px;
  width: 86px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: rotate(-30deg) skew(15deg);
  background: linear-gradient(135deg, #253b35, #17241f);
  border: 1px solid #749c78;
  box-shadow:
    -12px 12px 0 #15271e,
    -13px 13px 0 #526d54;
  transition: all 0.5s var(--ease);
}
.cube b {
  transform: skew(-15deg) rotate(30deg);
  font-size: 19px;
  font-family: monospace;
  color: #afd090;
  font-weight: 400;
}
.active .cube,
.explore-node:hover .cube {
  transform: translateY(-13px) rotate(-30deg) skew(15deg);
  background: #456747;
  box-shadow:
    -12px 24px 0 #15271e,
    -13px 25px 0 #93b77a,
    0 0 60px #a0e89020;
}
.visited .cube {
  border-color: var(--lime);
}
.process-title {
  font-size: 12px;
  letter-spacing: 0.3px;
}
.process-detail {
  display: grid;
  grid-template-columns: 1fr 220px;
  gap: 70px;
  max-width: 1050px;
  margin: 22px auto 0;
}
.process-caption {
  font-size: 8px;
  letter-spacing: 1.5px;
  color: var(--muted);
  padding-top: 28px;
  text-align: right;
}
.process-caption b {
  font-size: 42px;
  color: #bccebe;
  font-weight: 400;
  display: inline-block;
  margin-top: 15px;
}
.journey-orb {
  display: flex;
  align-items: center;
  justify-content: center;
  background: #14251f;
  border: 1px solid #6a916c;
  width: 85px;
  height: 85px;
  border-radius: 50%;
  box-shadow: inset 0 0 0 9px #0c1814;
  color: var(--lime);
  transition: 0.4s;
}
.journey-orb b {
  font-weight: 400;
  font-size: 18px;
  font-family: monospace;
}
.journey .active .journey-orb {
  background: var(--lime);
  color: #17221a;
  box-shadow:
    inset 0 0 0 9px #42613a,
    0 0 60px #b6e88e15;
}
.journey .process-connector {
  top: 72px;
}
.scene-system,
.scene-console,
.scene-capabilities {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8%;
  align-items: start;
}
.split-copy h1 {
  font-size: clamp(42px, 3.9vw, 74px);
  margin-top: 16px;
}
.split-copy .intro {
  font-size: 13px;
}
.explore-list {
  margin-top: 26px;
}
.explore-list .explore-node {
  width: 100%;
  padding: 15px 0;
  display: grid;
  grid-template-columns: 32px 1fr 20px;
  gap: 12px;
  border-bottom: 1px solid var(--line);
  font-size: 12px;
}
.node-num {
  font-family: monospace;
  font-size: 9px;
  color: #6f8479;
  align-self: center;
}
.explore-list .active {
  padding-left: 14px;
  background: #15221c;
  border-color: #486546;
}
.system-side {
  display: flex;
  flex-direction: column;
  justify-content: center;
  height: 100%;
}
.system-art {
  height: 285px;
  perspective: 700px;
  position: relative;
  max-width: 460px;
  width: 100%;
  margin: 5px auto 25px;
}
.system-layer {
  position: absolute;
  left: 22%;
  top: 5%;
  width: 60%;
  height: 150px;
  background: linear-gradient(140deg, #182b28eb, #0c191de0);
  border: 1px solid #4e756a;
  transform: rotateX(55deg) rotateZ(-33deg);
  box-shadow: 0 15px 0 #0b171b;
  transition: all 0.6s var(--ease);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #688c79;
  letter-spacing: 2px;
  font-size: 12px;
}
.layer-0 {
  top: 43%;
  z-index: 1;
}
.layer-1 {
  top: 22%;
  z-index: 2;
}
.layer-2 {
  top: 0;
  z-index: 3;
}
.system-layer.lit {
  border-color: var(--lime);
  background: linear-gradient(140deg, #446047e8, #172c27e0);
  color: var(--lime);
  box-shadow:
    0 15px 0 #172b21,
    0 0 60px #8bf29b15;
}
.system-layer i {
  position: absolute;
  width: 6px;
  height: 6px;
  background: var(--lime);
  left: 10%;
  bottom: 10%;
}
.system-layer i:nth-of-type(2) {
  left: 15%;
  opacity: 0.5;
}
.system-layer i:nth-of-type(3) {
  left: 20%;
  opacity: 0.3;
}
.reliability-dial {
  height: 290px;
  width: 290px;
  position: relative;
  margin: 0 auto 22px;
}
.dial-ring {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 1px solid #36564a;
  border-top: 2px solid var(--lime);
  border-right: 2px solid var(--lime);
  animation: orbit 25s linear infinite;
}
.dial-ring.inner {
  inset: 18px;
  border: 1px dashed #6b8e7a;
  animation-direction: reverse;
}
.reliability-dial > span {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 65px;
  letter-spacing: -4px;
  font-weight: 400;
}
.reliability-dial small {
  font-size: 20px;
  letter-spacing: 0;
  color: var(--lime);
  margin-top: 20px;
}
.reliability-dial em {
  position: absolute;
  top: 63%;
  font-size: 8px;
  letter-spacing: 2px;
  font-style: normal;
  color: var(--muted);
}
.signal {
  width: 8px;
  height: 8px;
  background: var(--lime);
  border-radius: 50%;
  box-shadow: 0 0 20px #c0ef94;
  position: absolute;
  left: 16px;
  top: 72px;
}
.signal.s2 {
  left: auto;
  right: 16px;
  top: 207px;
}
.capability-art {
  height: 285px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 26px;
  overflow: hidden;
}
.orbit {
  position: absolute;
  width: 265px;
  height: 265px;
  border: 1px solid #5e8c71;
  border-radius: 50%;
  transform: rotateX(55deg) rotate(-30deg);
}
.orbit.o2 {
  transform: rotateY(55deg) rotate(40deg);
  border-style: dashed;
}
.orbit.o3 {
  width: 160px;
  height: 160px;
  transform: rotateX(25deg);
  border-color: #a8d88850;
}
.capability-art > span {
  font-size: 85px;
  color: var(--lime);
  text-shadow: 0 0 65px #81d79766;
  animation: float 6s ease-in-out infinite;
}
.capability-art small {
  position: absolute;
  bottom: 5px;
  font-size: 8px;
  letter-spacing: 2px;
  color: var(--muted);
}
/* Time and data */
.timeline-body {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  align-items: center;
  gap: 7%;
  margin: 35px 0 20px;
}
.timeline-year {
  font-size: clamp(100px, 13vw, 250px);
  letter-spacing: -0.065em;
  font-weight: 400;
  line-height: 1;
  color: #c9deb7;
  text-shadow: 0 0 60px #97e6a50b;
}
.timeline-year span {
  display: block;
  font-size: 8px;
  letter-spacing: 3px;
  color: #7d9986;
  margin: 10px 0 0 13px;
}
.timeline-track {
  display: flex;
  position: relative;
  justify-content: space-between;
  margin: 30px 0 15px;
  border-top: 1px solid #456046;
}
.timeline-track .explore-node {
  padding: 22px 0 10px;
  flex: 1;
  text-align: center;
  font-size: 16px;
}
.timeline-track strong {
  font-weight: 400;
}
.timeline-dot {
  position: absolute;
  top: -6px;
  left: calc(50% - 5px);
  height: 10px;
  width: 10px;
  border-radius: 50%;
  border: 1px solid #9abb87;
  background: var(--bg);
}
.active .timeline-dot,
.visited .timeline-dot {
  background: var(--lime);
  box-shadow: 0 0 16px #b6e89450;
}
.timeline-track .visited-mark {
  margin-left: 20px;
}
.timeline-outro {
  font-size: 11px;
  color: var(--muted);
  text-align: center;
  margin: 15px 0 0;
}
.scene-bars,
.scene-columns {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 7%;
  align-items: center;
}
.chart-copy h1 {
  font-size: clamp(40px, 3.9vw, 73px);
}
.chart-copy .intro {
  font-size: 13px;
}
.chart-copy .detail-panel {
  margin-top: 25px;
  min-height: 120px;
}
.chart-copy .detail-panel h2 {
  font-size: 21px;
}
.chart-copy .detail-panel p {
  font-size: 28px;
  color: var(--lime);
}
.data-note {
  font-size: 10px;
  line-height: 1.7;
  color: #9baa9e;
  max-width: 350px;
  margin-top: 10px;
}
.chart-stage {
  border: 1px solid var(--line);
  background: linear-gradient(130deg, #13251c50, #080d1530);
  padding: 24px 26px;
}
.chart-header {
  display: flex;
  justify-content: space-between;
  font-size: 8px;
  letter-spacing: 1.4px;
  color: #8ea496;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--line);
}
.chart-header > span:last-child {
  font-size: 17px;
  color: var(--lime);
}
.chart {
  padding: 24px 0;
  background-image: linear-gradient(
    90deg,
    transparent 24.7%,
    #69877212 25%,
    transparent 25.3%,
    transparent 49.7%,
    #69877212 50%,
    transparent 50.3%,
    transparent 74.7%,
    #69877212 75%,
    transparent 75.3%
  );
}
.bars .explore-node {
  display: grid;
  grid-template-columns: 20px 1fr 55px;
  align-items: center;
  gap: 14px;
  width: 100%;
  height: 52px;
  padding: 7px 0;
}
.chart-index {
  font-size: 8px;
  color: #84948b;
  font-family: monospace;
}
.bar-track {
  height: 15px;
  display: block;
}
.bar-track i {
  display: block;
  width: var(--value);
  height: 100%;
  background: linear-gradient(90deg, #446247, #aacd8d);
  transform-origin: left;
  animation: bar-in 1s var(--ease) both;
  transition: background 0.3s;
}
.active .bar-track i {
  background: var(--lime);
  box-shadow: 0 0 22px #b6e59a25;
}
.chart-value {
  font-size: 12px;
  color: #dce8d9;
}
.bars small {
  position: absolute;
  left: 34px;
  bottom: 0;
  font-size: 7px;
  color: #92a68f;
}
.bars .visited-mark {
  position: absolute;
  right: -13px;
  top: 20px;
  font-size: 9px;
}
.chart-caption {
  border-top: 1px solid var(--line);
  padding-top: 19px;
  font-size: 8px;
  color: #8da189;
  letter-spacing: 1.2px;
  display: flex;
  justify-content: space-between;
}
.columns.chart {
  display: flex;
  align-items: end;
  height: 350px;
  gap: 15px;
  background-image: repeating-linear-gradient(
    0deg,
    transparent 0,
    transparent 59px,
    #65857022 60px
  );
}
.columns .explore-node {
  flex: 1;
  height: 100%;
  display: flex;
  flex-direction: column-reverse;
  gap: 15px;
  align-items: center;
  justify-content: flex-start;
  padding: 0 0 25px;
}
.columns .bar-track {
  height: 230px;
  width: 100%;
  display: flex;
  align-items: end;
}
.columns .bar-track i {
  width: 100%;
  height: var(--value);
  background: linear-gradient(0deg, #294739, #abc888);
  transform-origin: bottom;
  animation: column-in 1s var(--ease);
}
.columns .active .bar-track i {
  background: linear-gradient(0deg, #38623e, #c2f197);
}
.columns .chart-index {
  position: absolute;
  bottom: 0;
}
.columns .visited-mark {
  position: absolute;
  bottom: 0;
  right: 0;
}
.columns .chart-value {
  order: 1;
  font-size: 11px;
}
.services-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 9%;
  margin-top: 32px;
}
.service-list .explore-node {
  display: grid;
  grid-template-columns: 35px 1fr 20px;
  width: 100%;
  padding: 19px 10px;
  border-bottom: 1px solid var(--line);
  font-size: 13px;
  align-items: center;
}
.service-list .active {
  background: #19302380;
  border-color: #729367;
}
.service-detail {
  position: relative;
  padding-top: 20px;
}
.service-symbol {
  display: block;
  font-size: 75px;
  font-weight: 400;
  color: var(--lime);
  height: 112px;
}
.service-detail .detail-panel {
  border-color: #476346;
}
/* Assessment */
.scene-quiz {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 8%;
  align-items: start;
  padding-top: 45px;
}
.quiz-heading h1 {
  font-size: clamp(34px, 3vw, 57px);
  margin: 25px 0;
  letter-spacing: -0.045em;
  line-height: 1.12;
}
.quiz-heading .intro {
  font-size: 13px;
}
.quiz-dots {
  display: flex;
  gap: 12px;
  margin-top: 27px;
}
.quiz-dots span {
  height: 32px;
  width: 32px;
  border: 1px solid #394741;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 9px;
  color: #84958c;
  border-radius: 50%;
}
.quiz-dots .current {
  border-color: var(--lime);
  color: var(--lime);
}
.quiz-dots .done {
  background: var(--lime);
  color: #172319;
  border-color: var(--lime);
}
.quiz-policy {
  font-size: 10px;
  color: #8e9f95;
  margin-top: 30px;
  line-height: 1.8;
}
.answers {
  border: 0;
  padding: 0;
  margin: 0;
}
.answer {
  display: flex;
  align-items: center;
  gap: 15px;
  border: 1px solid #34443f;
  position: relative;
  min-height: 62px;
  margin-bottom: 12px;
  padding: 14px 20px;
  cursor: pointer;
  font-size: 12px;
  line-height: 1.6;
  transition: 0.25s;
}
.answer input {
  position: absolute;
  opacity: 0;
  inset: 0;
  width: 100%;
  height: 100%;
  cursor: pointer;
  margin: 0;
}
.answer:has(input:focus-visible) {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
}
.answer-letter {
  height: 26px;
  min-width: 26px;
  border: 1px solid #3c5147;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #95ae97;
  font-size: 10px;
}
.answer.selected {
  background: #24382480;
  border-color: #aecb89;
}
.answer.selected .answer-letter {
  background: var(--lime);
  color: #152013;
  border-color: var(--lime);
}
.answer-check {
  margin-left: auto;
  color: var(--lime);
}
.answer:hover {
  background: #15251d;
}
.answers:disabled .answer {
  cursor: default;
}
.answers:disabled input {
  cursor: default;
}
.submit-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-top: 22px;
}
.submit-row > span {
  font-size: 9px;
  color: var(--muted);
  line-height: 1.8;
}
.submit-row .primary {
  white-space: nowrap;
  padding: 13px 18px;
  font-size: 11px;
  gap: 15px;
}
.quiz-feedback {
  border-left: 2px solid #c2b38d;
  padding: 16px 20px;
  background: #27231880;
  font-size: 13px;
  outline: none;
  animation: detail-in 0.4s;
}
.quiz-feedback.correct {
  border-color: var(--lime);
  background: #243b2250;
}
.quiz-feedback b {
  font-weight: 400;
  color: var(--lime);
}
.quiz-feedback.incorrect b {
  color: #e7c69d;
}
.quiz-feedback p {
  color: #b0bcae;
  line-height: 1.75;
  font-size: 12px;
}
.quiz-feedback .secondary {
  padding: 9px 15px;
  margin-top: 6px;
}
.scene-matching .quiz-heading {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0 20px;
}
.scene-matching .quiz-heading h1 {
  font-size: 36px;
  margin: 15px 0;
}
.scene-matching .quiz-heading h1 br {
  display: none;
}
.scene-matching .quiz-dots {
  grid-column: 2;
  grid-row: 1 / 3;
  align-self: center;
  margin: 0;
}
.scene-matching .quiz-policy {
  grid-column: 2;
  grid-row: 3;
  margin: 0;
  text-align: right;
}
.scene-matching .quiz-heading .intro {
  grid-column: 1;
}
.matching {
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  gap: 40px;
  margin-top: 27px;
}
.match-bank {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 10px 0;
}
.match-token {
  display: flex;
  align-items: center;
  gap: 10px;
  text-align: left;
  padding: 14px 16px;
  background: #15251d;
  border: 1px solid #456048;
  font-size: 11px;
  min-height: 46px;
}
.match-token > span {
  color: #759565;
  font-size: 18px;
}
.match-token small {
  margin-left: auto;
  font-size: 9px;
  color: #9cae96;
}
.match-token.selected {
  background: #38502b;
  border-color: var(--lime);
}
.match-token.assigned {
  border-style: dashed;
  color: #adbea5;
  background: #101b16;
}
.match-targets {
  display: flex;
  flex-direction: column;
  gap: 9px;
}
.match-target {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 15px;
  border-bottom: 1px solid var(--line);
  padding: 8px 0;
  background: none;
  text-align: left;
  min-height: 49px;
}
.match-target > span {
  font-size: 11px;
  line-height: 1.6;
  color: #adbbb2;
}
.match-target strong {
  font-size: 10px;
  font-weight: 400;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px;
  border: 1px dashed #47594a;
  color: #94a58d;
  min-height: 42px;
}
.match-target.filled strong {
  border-style: solid;
  border-color: #8aab71;
  color: var(--lime);
  background: #1d2d1e;
}
.match-target i {
  font-style: normal;
}
.scene-matching .quiz-feedback {
  margin-top: 15px;
  padding: 12px 20px;
}
.scene-matching .quiz-feedback p {
  margin: 8px 0;
}
.scene-matching .submit-row {
  justify-content: flex-end;
  margin-top: 18px;
}
/* Results and completion */
.scene-results {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 8%;
  align-items: center;
}
.result-orb {
  width: min(100%, 370px);
  aspect-ratio: 1;
  position: relative;
  margin: auto;
}
.result-orb svg {
  width: 100%;
  transform: rotate(-90deg);
  overflow: visible;
}
.result-orb circle {
  fill: none;
  stroke-width: 2;
}
.result-track {
  stroke: #2b4335;
}
.result-value {
  stroke: var(--lime);
  stroke-dasharray: 754;
  transition: stroke-dashoffset 1.5s;
  filter: drop-shadow(0 0 10px #a2dc9c66);
}
.result-orb > span {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 95px;
  font-weight: 400;
  letter-spacing: -5px;
}
.result-orb small {
  font-size: 24px;
  color: var(--lime);
  margin-top: 25px;
  letter-spacing: 0;
}
.result-orb em {
  font-size: 8px;
  font-style: normal;
  letter-spacing: 2px;
  position: absolute;
  top: 68%;
  color: var(--muted);
}
.results-copy h1 {
  font-size: clamp(40px, 4.1vw, 76px);
}
.results-copy .intro {
  font-size: 13px;
}
.result-rows {
  margin-top: 20px;
}
.result-rows button {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: none;
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
  width: 100%;
  text-align: left;
  font-size: 11px;
  gap: 20px;
  color: var(--muted);
}
.result-rows b {
  font-weight: 400;
  color: var(--lime);
  white-space: nowrap;
}
.results-actions {
  display: flex;
  gap: 13px;
  margin-top: 23px;
}
.result-note {
  font-size: 9px;
  line-height: 1.6;
  color: #9cab99;
}
.scene-complete {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: 650px;
}
.completion-art {
  position: absolute;
  inset: 0;
  opacity: 0.26;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}
.completion-art .network-art {
  height: 100%;
  width: auto;
  max-width: 100%;
}
.completion-copy {
  position: relative;
  z-index: 1;
}
.completion-copy .eyebrow {
  justify-content: center;
}
.completion-copy h1 {
  font-size: clamp(50px, 5vw, 96px);
}
.completion-copy .intro {
  margin: 0 auto 28px;
}
.completion-stats {
  display: flex;
  gap: 50px;
  justify-content: center;
  margin-top: 35px;
}
.completion-stats span {
  font-size: 8px;
  letter-spacing: 1.5px;
  color: var(--muted);
}
.completion-stats b {
  display: block;
  font-size: 22px;
  color: var(--lime);
  font-weight: 400;
  letter-spacing: 0;
  margin-bottom: 10px;
}
/* Fullscreen network map and help */
dialog {
  color: var(--text);
  background: #0b121b;
  border: 1px solid #425447;
  width: min(900px, 94vw);
  max-height: 90dvh;
  padding: 55px 50px;
  box-shadow: 0 25px 140px #000a;
  animation: detail-in 0.35s var(--ease);
}
dialog::backdrop {
  background: #04070be8;
  backdrop-filter: blur(9px);
}
dialog h2 {
  font-size: 39px;
  margin: 18px 0 10px;
}
.dialog-close {
  position: absolute;
  right: 23px;
  top: 20px;
  font-size: 23px;
}
.dialog-intro {
  font-size: 12px;
  color: var(--muted);
}
.map-dialog {
  width: 100vw;
  height: 100dvh;
  max-width: none;
  max-height: none;
  margin: 0;
  border: 0;
  padding: 55px 6vw;
  background:
    radial-gradient(ellipse at 70% 0%, #1b302240, transparent 60%), #090f17;
  overflow: auto;
}
.map-dialog h2 {
  font-size: 48px;
  letter-spacing: -2px;
}
.course-map {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px 40px;
  margin-top: 35px;
}
.map-section {
  position: relative;
}
.map-section-title {
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid #3a5144;
  padding-bottom: 14px;
}
.map-section-title > span {
  color: var(--lime);
  font-size: 10px;
  font-family: monospace;
}
.map-section-title h3 {
  font-size: 14px;
  margin: 0;
}
.map-section-title small {
  margin-left: auto;
  color: #819780;
  font-size: 10px;
}
.map-screens {
  position: relative;
  margin-top: 8px;
}
.map-screens:before {
  content: "";
  position: absolute;
  left: 14px;
  top: 18px;
  bottom: 25px;
  width: 1px;
  background: #2c4234;
}
.map-screens button {
  position: relative;
  width: 100%;
  display: flex;
  align-items: center;
  gap: 13px;
  background: none;
  padding: 10px 0;
  text-align: left;
  font-size: 11px;
  color: #b9c5b7;
  min-height: 51px;
}
.map-node {
  height: 29px;
  min-width: 29px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid #405247;
  background: #0b1419;
  border-radius: 50%;
  font-size: 8px;
  color: #7e9b81;
  font-family: monospace;
}
.map-screens small {
  display: block;
  font-size: 8px;
  margin-top: 6px;
  color: #7c8b80;
}
.map-screens button > b {
  margin-left: auto;
  color: #56745e;
  font-size: 14px;
  font-weight: 400;
}
.map-screens .done .map-node {
  background: var(--lime);
  color: #112015;
  border-color: var(--lime);
}
.map-screens .current {
  color: var(--lime);
}
.map-screens .current .map-node {
  box-shadow: 0 0 0 4px #a8d89214;
  border-color: var(--lime);
}
.map-screens button:hover {
  background: #19271d;
}
.map-legend {
  display: flex;
  gap: 30px;
  color: #95a98e;
  font-size: 10px;
  border-top: 1px solid var(--line);
  padding-top: 20px;
  margin-top: 35px;
}
.help-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px 35px;
  margin-top: 25px;
}
.help-grid h3 {
  font-size: 17px;
  color: #d5e0cf;
}
.help-grid p {
  font-size: 12px;
  line-height: 1.8;
  color: var(--muted);
}
.attribution {
  font-size: 10px;
  line-height: 1.8;
  color: #829580;
  border-top: 1px solid var(--line);
  padding-top: 24px;
  margin-top: 30px;
}
@keyframes scene-in {
  from {
    opacity: 0;
    transform: translateY(15px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
@keyframes detail-in {
  from {
    opacity: 0;
    transform: translateY(9px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}
@keyframes orbit {
  to {
    rotate: 360deg;
  }
}
@keyframes float {
  50% {
    translate: 0 -12px;
  }
}
@keyframes glint {
  0%,
  100% {
    opacity: 0.35;
  }
  50% {
    opacity: 1;
  }
}
@keyframes flow {
  to {
    stroke-dashoffset: -300;
  }
}
@keyframes bar-in {
  from {
    transform: scaleX(0);
  }
  to {
    transform: scaleX(1);
  }
}
@keyframes column-in {
  from {
    transform: scaleY(0);
  }
  to {
    transform: scaleY(1);
  }
}
@keyframes nudge {
  50% {
    color: var(--lime);
    transform: translateX(7px);
  }
}
.nudge {
  animation: nudge 0.5s ease;
}
.motion-paused .orbital,
.motion-paused .core,
.motion-paused .satellite,
.motion-paused .particle,
.motion-paused .dial-ring,
.motion-paused .capability-art > span,
.motion-paused .mission-line {
  animation-play-state: paused;
}
@media (min-width: 1600px) {
  .topbar {
    height: 122px;
  }
  .section-rail {
    height: 90px;
  }
  .scene {
    min-height: 680px;
  }
  .scene-hero {
    min-height: 720px;
  }
  .hero-copy .intro,
  .intro {
    font-size: 17px;
  }
  .hero-cta {
    padding: 20px 29px;
    margin-top: 40px;
  }
  .hero-meta {
    margin-top: 44px;
    font-size: 11px;
  }
  .eyebrow {
    font-size: 12px;
  }
  .course-label {
    font-size: 11px;
  }
  .compact .intro {
    font-size: 16px;
    max-width: 900px;
  }
  .process {
    margin: 65px 0 30px;
  }
  .process-title {
    font-size: 15px;
  }
  .process-detail {
    margin-top: 35px;
  }
  .mission-network {
    height: 390px;
  }
  .detail-panel p {
    font-size: 17px;
  }
  .split-copy .intro {
    font-size: 16px;
  }
  .explore-list .explore-node {
    padding-top: 20px;
    padding-bottom: 20px;
    font-size: 15px;
  }
  .system-art,
  .capability-art {
    height: 345px;
  }
  .system-layer {
    height: 190px;
  }
  .reliability-dial {
    width: 330px;
    height: 330px;
  }
  .chart-copy .intro {
    font-size: 16px;
  }
  .chart-stage {
    padding: 35px;
  }
  .bars .explore-node {
    height: 66px;
  }
  .chart-value {
    font-size: 15px;
  }
  .bars small {
    font-size: 10px;
  }
  .bar-track {
    height: 20px;
  }
  .columns.chart {
    height: 410px;
  }
  .columns .bar-track {
    height: 300px;
  }
  .answer {
    font-size: 15px;
    min-height: 78px;
  }
  .quiz-policy {
    font-size: 12px;
  }
  .match-token {
    font-size: 14px;
    padding: 18px;
  }
  .match-target {
    min-height: 67px;
  }
  .match-target > span {
    font-size: 13px;
  }
  .match-target strong {
    font-size: 12px;
  }
  .quiz-feedback p {
    font-size: 15px;
  }
  .scene-matching .quiz-heading h1 {
    font-size: 48px;
  }
  .scene-footnote {
    font-size: 12px;
  }
  .source-note {
    font-size: 11px;
  }
  .player {
    min-height: 125px;
  }
  .next {
    padding: 17px 25px;
    min-width: 160px;
  }
  .map-button {
    font-size: 14px;
  }
  .screen-position {
    font-size: 13px;
  }
  .course-map {
    gap: 40px 70px;
  }
  .map-screens button {
    font-size: 14px;
    padding: 13px 0;
  }
  .map-screens small {
    font-size: 10px;
  }
}
@media (max-width: 1050px) {
  .course-shell {
    padding: 0 4vw;
  }
  .course-label {
    display: none;
  }
  .topbar {
    height: 85px;
  }
  .scene {
    padding-left: 0;
    padding-right: 0;
    min-height: 600px;
  }
  .scene-footnote {
    left: 0;
    right: 0;
  }
  .scene-hero {
    min-height: 600px;
  }
  .hero-copy h1 {
    font-size: 60px;
  }
  .hero-copy .intro {
    font-size: 13px;
  }
  .hero-art {
    min-height: 370px;
  }
  .hero-meta {
    gap: 15px;
    font-size: 8px;
  }
  .hero-bottom {
    left: 0;
    right: 0;
    font-size: 7px;
  }
  .hero-bottom span:last-child {
    display: none;
  }
  .scene-heading .intro {
    font-size: 13px;
  }
  .tag-top {
    left: 4%;
    font-size: 7px;
  }
  .tag-bottom {
    font-size: 6px;
  }
  .axis-label {
    display: none;
  }
  .scene-system,
  .scene-console,
  .scene-capabilities {
    gap: 5%;
  }
  .detail-panel h2 {
    font-size: 22px;
  }
  .detail-panel p {
    font-size: 12px;
  }
  .scene-quiz {
    gap: 5%;
  }
  .quiz-heading h1 {
    font-size: 34px;
  }
  .answer {
    font-size: 11px;
    padding: 11px;
  }
  .process {
    padding-left: 0;
    padding-right: 0;
  }
  .cube {
    width: 66px;
    height: 66px;
  }
  .process-connector {
    top: 63px;
  }
  .process .visited-mark {
    right: 4%;
  }
  .process-title {
    font-size: 10px;
  }
  .process-detail {
    gap: 30px;
  }
  .mission-network .explore-node {
    width: 100px;
    font-size: 13px;
  }
  .scene-bars,
  .scene-columns {
    gap: 5%;
  }
  .chart-stage {
    padding: 20px 15px;
  }
  .chart-value {
    font-size: 10px;
  }
  .player-progress {
    width: 170px;
  }
  .screen-position > div {
    max-width: 220px;
    line-height: 1.6;
  }
  .matching {
    gap: 20px;
  }
  .match-token {
    font-size: 10px;
  }
  .scene-matching .quiz-heading h1 {
    font-size: 30px;
  }
  .match-target {
    gap: 10px;
  }
  .match-target > span {
    font-size: 10px;
  }
  .course-map {
    gap: 20px;
  }
  .map-dialog {
    padding: 45px 4vw;
  }
}
@media (max-width: 760px) {
  .topbar {
    height: 75px;
  }
  .brand {
    font-size: 16px;
    letter-spacing: 2px;
  }
  .brand img {
    width: 34px;
  }
  .brand-sub {
    font-size: 7px;
    letter-spacing: 3.4px;
  }
  .top-actions {
    gap: 12px;
  }
  .map-button {
    font-size: 10px;
    gap: 6px;
  }
  .key {
    display: none;
  }
  .icon-button {
    height: 29px;
    width: 29px;
  }
  .section-rail {
    height: 56px;
    font-size: 9px;
  }
  .mode-label {
    font-size: 6px;
  }
  .scene {
    min-height: 0;
    padding-top: 20px;
    padding-bottom: 70px;
    display: block;
  }
  .scene-heading {
    max-width: 100%;
  }
  h1 {
    font-size: 43px;
    margin-top: 18px;
  }
  .intro {
    font-size: 13px;
  }
  .scene-hero {
    display: flex;
    flex-direction: column;
    padding-top: 14px;
    padding-bottom: 55px;
  }
  .hero-copy {
    width: 100%;
  }
  .hero-copy h1 {
    font-size: 57px;
  }
  .hero-copy .intro {
    max-width: 480px;
  }
  .hero-cta {
    padding: 15px 20px;
    margin-top: 25px;
  }
  .hero-meta {
    margin-top: 23px;
    gap: 25px;
    font-size: 9px;
  }
  .hero-art {
    height: 310px;
    min-height: 0;
    width: 100%;
    max-width: 420px;
    margin: 20px auto 0;
  }
  .hero-art .network-art {
    height: 100%;
    width: auto;
  }
  .tag-top {
    top: 1%;
    left: 12%;
    font-size: 6px;
    padding: 8px;
  }
  .tag-bottom {
    bottom: 0;
    font-size: 6px;
  }
  .hero-bottom {
    display: none;
  }
  .scene-footnote {
    font-size: 9px;
    flex-wrap: wrap;
    bottom: 15px;
    gap: 7px;
  }
  .source-note {
    max-width: 100%;
    width: 100%;
    text-align: left;
    margin-left: 12px;
    font-size: 8px;
  }
  .player {
    gap: 10px;
    min-height: 105px;
    flex-wrap: wrap;
    padding: 15px 0;
  }
  .player-progress {
    width: 105px;
    gap: 14px;
  }
  .player-progress > span {
    font-size: 24px;
  }
  .player-progress small {
    font-size: 6px;
  }
  .progress-track {
    width: 40px;
  }
  .screen-position {
    display: none;
  }
  .player-nav {
    gap: 15px;
    margin-left: auto;
  }
  .previous span {
    display: none;
  }
  .next {
    min-width: 120px;
    padding: 13px 15px;
    font-size: 11px;
  }
  .design-art {
    padding: 25px 0 50px;
    margin: 25px 0 0;
  }
  .design-word {
    font-size: 68px;
  }
  .design-outline {
    inset: 10px 10px 25px 25%;
  }
  .design-caption {
    margin-top: 20px;
  }
  .learning-objectives {
    margin-top: 25px;
  }
  .compact h1 {
    font-size: 37px;
    line-height: 1.12;
  }
  .compact h1 br {
    display: block;
  }
  .compact .intro {
    font-size: 12px;
  }
  .mission-layout {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-top: 20px;
  }
  .mission-network {
    width: 100%;
    height: 260px;
  }
  .mission-network .explore-node {
    width: 100px;
    height: 70px;
    font-size: 12px;
  }
  .mission-layout .detail-panel {
    width: 100%;
    min-height: 135px;
  }
  .process {
    margin: 28px 0 18px;
    padding: 12px 0 0;
    gap: 6px;
  }
  .cube {
    width: 43px;
    height: 43px;
    box-shadow:
      -7px 7px 0 #15271e,
      -8px 8px 0 #526d54;
  }
  .cube b {
    font-size: 12px;
  }
  .process .explore-node {
    gap: 21px;
  }
  .process-title {
    font-size: 9px;
    line-height: 1.5;
  }
  .process-connector {
    top: 37px;
  }
  .process .visited-mark {
    top: -15px;
    right: 35%;
    font-size: 9px;
  }
  .active .cube,
  .explore-node:hover .cube {
    transform: translateY(-6px) rotate(-30deg) skew(15deg);
    box-shadow:
      -7px 13px 0 #15271e,
      -8px 14px 0 #93b77a;
  }
  .process-detail {
    display: block;
    margin-top: 20px;
  }
  .process-caption {
    display: none;
  }
  .detail-panel {
    min-height: 135px;
    padding-top: 20px;
  }
  .detail-panel p {
    font-size: 13px;
  }
  .journey-orb {
    width: 48px;
    height: 48px;
    box-shadow: inset 0 0 0 5px #0c1814;
  }
  .journey-orb b {
    font-size: 12px;
  }
  .journey .process-connector {
    top: 39px;
  }
  .journey .active .journey-orb {
    box-shadow: inset 0 0 0 5px #42613a;
  }
  .split-copy h1 {
    font-size: 42px;
  }
  .explore-list {
    margin-top: 20px;
  }
  .explore-list .explore-node {
    padding: 15px 0;
    font-size: 12px;
  }
  .system-side {
    margin-top: 30px;
  }
  .system-art {
    height: 270px;
    max-width: 390px;
  }
  .reliability-dial {
    width: 260px;
    height: 260px;
    margin-bottom: 30px;
  }
  .capability-art {
    height: 260px;
  }
  .timeline-body {
    grid-template-columns: 1fr;
    gap: 25px;
    margin-top: 30px;
  }
  .timeline-year {
    font-size: 115px;
  }
  .timeline-year span {
    font-size: 7px;
    margin-left: 7px;
  }
  .timeline-track {
    margin-top: 28px;
  }
  .timeline-track .explore-node {
    font-size: 14px;
  }
  .timeline-track .visited-mark {
    margin-left: 10px;
    font-size: 9px;
  }
  .timeline-outro {
    font-size: 10px;
    line-height: 1.8;
  }
  .chart-copy h1 {
    font-size: 43px;
  }
  .chart-copy .detail-panel {
    margin-top: 20px;
  }
  .chart-stage {
    margin-top: 25px;
    padding: 20px;
  }
  .chart-value {
    font-size: 12px;
  }
  .columns.chart {
    height: 290px;
  }
  .columns .bar-track {
    height: 190px;
  }
  .services-layout {
    grid-template-columns: 1fr;
    gap: 20px;
    margin-top: 20px;
  }
  .service-detail {
    padding-top: 0;
    display: grid;
    grid-template-columns: 65px 1fr;
    gap: 15px;
  }
  .service-symbol {
    font-size: 48px;
    padding-top: 35px;
  }
  .service-detail .detail-panel {
    min-height: 170px;
  }
  .scene-quiz .quiz-heading {
    margin-bottom: 25px;
  }
  .quiz-heading h1 {
    font-size: 35px;
  }
  .quiz-dots {
    margin-top: 20px;
  }
  .quiz-policy {
    margin-top: 16px;
    font-size: 9px;
  }
  .answer {
    font-size: 12px;
    padding: 12px 15px;
  }
  .submit-row {
    gap: 12px;
  }
  .submit-row .primary {
    padding: 12px 14px;
    font-size: 10px;
  }
  .quiz-feedback p {
    font-size: 12px;
  }
  .scene-matching .quiz-heading {
    display: block;
  }
  .scene-matching .quiz-dots {
    margin-top: 20px;
  }
  .scene-matching .quiz-heading h1 {
    font-size: 34px;
  }
  .scene-matching .quiz-policy {
    text-align: left;
    margin-top: 12px;
  }
  .matching {
    display: block;
    margin-top: 18px;
  }
  .match-bank {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 16px;
    padding: 0;
  }
  .match-token {
    font-size: 10px;
    min-height: 40px;
    padding: 8px 10px;
    gap: 7px;
  }
  .match-token small {
    display: none;
  }
  .match-target {
    min-height: 65px;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
  }
  .match-target > span {
    font-size: 11px;
  }
  .match-target strong {
    font-size: 10px;
    min-height: 47px;
  }
  .scene-results {
    padding-top: 0;
  }
  .result-orb {
    width: 240px;
    margin: 15px auto 35px;
  }
  .result-orb > span {
    font-size: 70px;
  }
  .result-orb em {
    font-size: 7px;
  }
  .results-copy h1 {
    font-size: 44px;
  }
  .results-actions {
    gap: 5px;
    flex-wrap: wrap;
  }
  .results-actions button {
    font-size: 11px;
  }
  .result-rows button {
    font-size: 10px;
  }
  .scene-complete {
    padding: 40px 0 70px;
    min-height: 590px;
    display: flex;
  }
  .completion-copy h1 {
    font-size: 53px;
  }
  .completion-copy .intro {
    font-size: 13px;
  }
  .completion-stats {
    gap: 30px;
  }
  .completion-stats span {
    font-size: 7px;
  }
  .map-dialog {
    padding: 55px 6vw 30px;
  }
  .map-dialog h2 {
    font-size: 35px;
  }
  .course-map {
    grid-template-columns: 1fr;
    gap: 27px;
    margin-top: 30px;
  }
  .map-screens button {
    font-size: 12px;
    padding: 10px 0;
  }
  .map-section-title h3 {
    font-size: 16px;
  }
  .map-legend {
    font-size: 8px;
    gap: 15px;
  }
  .help-grid {
    grid-template-columns: 1fr;
    gap: 10px;
  }
  dialog {
    padding: 45px 25px;
  }
  dialog h2 {
    font-size: 32px;
  }
  .help-grid h3 {
    font-size: 16px;
  }
  .attribution {
    font-size: 9px;
  }
}
@media (prefers-reduced-motion: reduce) {
  *,
  *:before,
  *:after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}

@media (min-width: 761px) {
  .hero-art {
    min-height: 0;
    min-width: 0;
  }
  .hero-art .network-art {
    max-height: 570px;
    width: 100%;
  }
}

@media (min-width: 761px) and (max-width: 1599px) and (max-height: 850px) {
  .topbar {
    height: 80px;
  }
  .section-rail {
    height: 50px;
  }
  .player {
    min-height: 90px;
  }
  .scene {
    min-height: calc(100dvh - 220px);
    padding-top: 20px;
    padding-bottom: 55px;
  }
  .scene-hero {
    padding-top: 5px;
    padding-bottom: 70px;
  }
  .hero-copy h1 {
    font-size: 62px;
    margin: 18px 0 20px;
  }
  .hero-copy .intro {
    font-size: 13px;
    line-height: 1.8;
  }
  .hero-cta {
    margin-top: 24px;
    padding: 13px 20px;
  }
  .hero-meta {
    margin-top: 23px;
  }
  .hero-art .network-art {
    max-height: 430px;
  }
  .hero-bottom {
    bottom: 45px;
  }
  .compact h1 {
    font-size: 42px;
  }
  .process {
    margin-top: 25px;
  }
  .process-detail {
    margin-top: 15px;
  }
  .timeline-body {
    margin-top: 20px;
  }
  .timeline-year {
    font-size: 145px;
  }
  .system-art {
    height: 230px;
    margin-bottom: 15px;
  }
  .reliability-dial {
    width: 235px;
    height: 235px;
  }
  .capability-art {
    height: 235px;
  }
  .split-copy h1 {
    font-size: 45px;
  }
  .explore-list .explore-node {
    padding: 12px 0;
  }
  .quiz-heading h1 {
    font-size: 36px;
  }
  .answer {
    min-height: 55px;
    margin-bottom: 9px;
  }
  .chart-stage {
    padding: 20px;
  }
  .columns.chart {
    height: 300px;
  }
  .columns .bar-track {
    height: 190px;
  }
  .scene-complete {
    min-height: calc(100dvh - 220px);
  }
}
/* Authored learning content: useful context stays visible before the first click. */
.context-label{display:block;font-size:9px;line-height:1.6;letter-spacing:1.6px;color:var(--lime);text-transform:uppercase}
.learning-brief{grid-column:1/-1;display:grid;grid-template-columns:1.7fr 1fr;gap:40px;margin:24px 0 8px;padding:22px 0 8px;border-top:1px solid #405745}
.learning-brief h3,.welcome-brief h3,.assessment-guide h3{font-size:17px;line-height:1.4;margin:8px 0;color:#e1ebda;letter-spacing:-.2px}
.learning-brief p,.welcome-brief p,.assessment-guide p,.result-reflection p{font-size:12px;line-height:1.8;color:#aab8ac;margin:0}
.brief-story{max-width:860px}.brief-takeaway{border-left:1px solid #435b44;padding-left:27px}.brief-takeaway p{font-size:15px;color:#ccd9c3;margin-top:10px;line-height:1.7;max-width:420px}
.context-example{margin-top:19px;padding:15px 0 0 17px;border-left:2px solid #68945b}.context-example h3{font-size:14px;line-height:1.5;color:#d7e3cb;margin:6px 0}.detail-panel .context-example p{font-size:12px;line-height:1.8;color:#9fb09f}
.welcome-brief{border-top:1px solid #405745;margin-top:27px;padding-top:17px;max-width:540px}.welcome-brief .welcome-outcome{margin-top:9px;color:#c4d6b8;font-size:11px}.welcome-brief h3{font-size:15px}
.enriched .system-art{height:230px;margin-bottom:15px}.enriched .reliability-dial{height:240px;width:240px;margin-bottom:18px}.enriched .capability-art{height:235px;margin-bottom:12px}.enriched .system-side{height:auto}.enriched .process-detail{max-width:none;grid-template-columns:1fr 220px}.enriched .process-detail .detail-panel{max-width:1050px}.enriched .timeline-body{margin-top:25px;margin-bottom:10px}.enriched .timeline-track{margin-top:20px}.enriched .chart-copy .detail-panel .context-example p{font-size:12px;color:#9fb09f}
.assessment-guide{margin-top:30px;padding-top:20px;border-top:1px solid #405745;max-width:420px}.scene-matching .assessment-guide{grid-column:1/-1;max-width:none;margin-top:15px;padding:12px 16px;background:#122019}.scene-matching .assessment-guide h3{display:inline-block;margin:4px 13px 0 0;font-size:13px}.scene-matching .assessment-guide p{display:inline;font-size:11px}.scene-matching .assessment-guide .context-label{font-size:8px}
.result-reflection{margin-top:22px;border-top:1px solid #405745;padding-top:17px}.result-reflection p{margin-top:7px}.transfer-plan{display:grid;grid-template-columns:repeat(3,1fr);gap:25px;text-align:left;max-width:880px;margin:35px auto 0;border-top:1px solid #405745;padding-top:22px}.transfer-plan span{font-size:9px;letter-spacing:1.4px;color:var(--lime)}.transfer-plan p{font-size:12px;line-height:1.8;color:#bbcbb2;max-width:240px;margin:8px 0}
.scene.enriched{row-gap:0}.enriched.scene-hero{padding-bottom:75px}.enriched .hero-meta{margin-top:22px}.enriched .hero-cta{margin-top:24px}.enriched .hero-copy h1{margin-bottom:20px}.enriched .hero-bottom{display:none}
@media(min-width:1600px){.learning-brief p{font-size:14px}.learning-brief h3{font-size:20px}.brief-takeaway p{font-size:17px}.context-example h3{font-size:16px}.detail-panel .context-example p{font-size:14px}.context-label{font-size:10px}.enriched .process{margin:40px 0 20px}.enriched .timeline-year{font-size:190px}.enriched .system-art{height:275px}.enriched .reliability-dial{height:275px;width:275px}.enriched .capability-art{height:275px}.welcome-brief p{font-size:14px}.welcome-brief h3{font-size:18px}.welcome-brief .welcome-outcome{font-size:13px}.enriched .hero-copy h1{font-size:88px}.enriched .hero-copy .intro{max-width:560px;font-size:16px}.assessment-guide p,.result-reflection p{font-size:14px}.transfer-plan p{font-size:14px}}
@media(min-width:761px) and (max-width:1599px){.learning-brief{gap:28px;margin-top:20px;padding-top:18px}.enriched.scene-hero{padding-bottom:60px}.enriched .hero-copy h1{font-size:56px}.enriched .hero-art .network-art{max-height:460px}.welcome-brief{margin-top:20px}.welcome-brief p{font-size:11px}.enriched .hero-meta{margin-top:18px}.enriched .hero-cta{margin-top:20px}.enriched .system-art{height:195px}.enriched .capability-art{height:210px}.enriched .reliability-dial{width:210px;height:210px}}
@media(max-width:760px){.learning-brief{display:block;margin-top:20px;padding-top:20px}.learning-brief h3{font-size:17px}.learning-brief p{font-size:12px}.brief-takeaway{margin-top:20px;padding-left:17px}.brief-takeaway p{font-size:14px;margin-top:7px}.context-example{margin-top:15px;padding-left:13px}.context-example h3{font-size:14px}.welcome-brief{margin-top:25px;padding-top:20px}.welcome-brief h3{font-size:17px}.welcome-brief p{font-size:12px}.welcome-brief .welcome-outcome{font-size:12px}.enriched .hero-copy h1{font-size:52px}.enriched .process-detail{display:block}.enriched .timeline-year{font-size:110px}.enriched .hero-meta{font-size:8px}.assessment-guide{margin-top:20px;padding-top:15px}.scene-matching .assessment-guide{margin-top:18px}.scene-matching .assessment-guide h3,.scene-matching .assessment-guide p{display:block}.transfer-plan{grid-template-columns:1fr;gap:16px;margin-top:27px}.transfer-plan p{max-width:none;margin-top:5px}.scene-complete{padding-top:30px}.completion-copy h1{font-size:47px}.learning-brief:last-of-type{margin-bottom:12px}}
@media(min-width:1100px){
 .enriched .process-detail .detail-panel{display:grid;grid-template-columns:1fr 1fr;gap:0 32px;max-width:none}
 .enriched .process-detail .detail-panel>.detail-number,.enriched .process-detail .detail-panel>h2,.enriched .process-detail .detail-panel>p{grid-column:1}
 .enriched .process-detail .detail-panel>.context-example{grid-column:2;grid-row:1/4;margin-top:0;padding-top:0}
 .enriched .process-detail{grid-template-columns:1fr 125px;gap:32px;margin-top:10px}
 .enriched .process{margin:25px 0 8px;padding-top:17px}
 .enriched .process-connector{top:67px}.enriched .journey .process-connector{top:64px}
 .enriched .learning-brief{margin-top:17px;padding-top:17px}
}
@media(min-width:1600px){.course-shell:has(.enriched) .topbar{height:100px}.course-shell:has(.enriched) .section-rail{height:65px}.course-shell:has(.enriched) .player{min-height:105px}.scene.enriched{padding-top:20px}}