@font-face {
  font-family: Atlas;
  src: local("Georgia");
}
* {
  box-sizing: border-box;
}
html,
body {
  margin: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
}
body {
  background: #05080d;
  color: #e9e3d8;
  font-family: Arial, Helvetica, sans-serif;
}
button,
a,
input {
  font: inherit;
}
button {
  cursor: pointer;
}
a {
  color: inherit;
}
button:focus-visible,
a:focus-visible,
input:focus-visible,
summary:focus-visible {
  outline: 2px solid #8ae1ee;
  outline-offset: 5px;
}
button:disabled {
  opacity: 0.3;
  cursor: default;
}
.skip-link {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: 100;
  padding: 14px;
  background: #192936;
}
.skip-link:focus {
  top: 12px;
}
#box {
  position: absolute;
  width: 1920px;
  height: 1080px;
  transform-origin: 0 0;
  isolation: isolate;
  border: 1px solid #31574e;
  overflow: hidden;
}
#L1,
#L2,
#L3,
#L4 {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}
#L1 {
  z-index: 1;
  background:
    radial-gradient(ellipse at 85% 20%, #14232e55, transparent 55%),
    linear-gradient(140deg, #10151a, #070b10 70%);
}
#L2 {
  z-index: 2;
  opacity: 0.13;
}
#L2 line {
  stroke: #7eb4c5;
  stroke-width: 0.8;
}
#L2 circle {
  fill: #7ed9e7;
}
#L3 {
  z-index: 3;
  opacity: 0.018;
  display: flex;
  justify-content: end;
  align-items: end;
  font-size: 260px;
  letter-spacing: -0.06em;
  padding: 0 65px 80px;
}
#L4 {
  z-index: 4;
  opacity: 0.12;
}
#tower-mark {
  fill: none;
  stroke: #6cd4e3;
  stroke-width: 1;
}
.enterprise-frame {
  position: absolute;
  inset: 22px;
  border: 1px solid #c9aa6b2e;
  z-index: 4;
  pointer-events: none;
}
.enterprise-frame i {
  position: absolute;
  width: 16px;
  height: 16px;
  border-color: #c3a871;
  border-style: solid;
}
.enterprise-frame i:nth-child(1) {
  left: -1px;
  top: -1px;
  border-width: 1px 0 0 1px;
}
.enterprise-frame i:nth-child(2) {
  right: -1px;
  top: -1px;
  border-width: 1px 1px 0 0;
}
.enterprise-frame i:nth-child(3) {
  right: -1px;
  bottom: -1px;
  border-width: 0 1px 1px 0;
}
.enterprise-frame i:nth-child(4) {
  left: -1px;
  bottom: -1px;
  border-width: 0 0 1px 1px;
}
.enterprise-off .enterprise-frame {
  display: none;
}
.tower-off #L4,
.tower-off #L3 {
  display: none;
}
.topbar {
  position: absolute;
  z-index: 10;
  left: 64px;
  right: 64px;
  top: 46px;
  height: 77px;
  display: flex;
  align-items: start;
  border-bottom: 1px solid #bba77935;
  gap: 36px;
}
.brand {
  text-decoration: none;
  font-family: Georgia, serif;
  font-size: 30px;
  letter-spacing: 0.2em;
  color: #ddc699;
  line-height: 1;
}
.brand span {
  font: 10px Arial;
  display: block;
  letter-spacing: 0.27em;
  margin-top: 14px;
  color: #a4a8a6;
}
.edition {
  font-size: 11px;
  letter-spacing: 0.19em;
  margin-top: 7px;
  color: #a5a6a1;
}
.topbar nav {
  display: flex;
  gap: 7px;
  margin-left: auto;
}
.menu {
  position: relative;
}
.menu > button {
  font-size: 17px;
  padding: 9px 16px;
  border: 1px solid transparent;
  background: none;
  color: #e4ded2;
}
.menu > button[aria-expanded="true"],
.menu > button:hover {
  border-color: #bda37165;
  background: #c2a57410;
}
.dropdown {
  position: absolute;
  right: 0;
  top: 48px;
  min-width: 315px;
  padding: 9px;
  background: #131c25;
  border: 1px solid #6d6452;
  box-shadow: 0 16px 50px #000a;
  z-index: 20;
}
.dropdown a,
.dropdown button,
.dropdown label {
  display: flex;
  width: 100%;
  text-align: left;
  padding: 13px 12px;
  border: 0;
  background: none;
  color: #e9e3d8;
  line-height: 1.4;
  font-size: 15px;
  text-decoration: none;
  gap: 10px;
}
.dropdown a:hover,
.dropdown button:hover,
.dropdown label:hover {
  background: #d2b77c17;
}
.heading {
  position: absolute;
  z-index: 5;
  left: 70px;
  right: 70px;
  top: 150px;
  height: 110px;
}
.heading p {
  margin: 0 0 14px;
  color: #baaa88;
  font-size: 12px;
  letter-spacing: 0.22em;
}
.heading h1 {
  font-family: Georgia, serif;
  font-weight: 400;
  font-size: 48px;
  letter-spacing: -0.02em;
  margin: 0;
  max-width: 1500px;
}
.heading > span {
  position: absolute;
  right: 0;
  top: 38px;
  font-size: 26px;
  color: #d0ba89;
  font-variant-numeric: tabular-nums;
}
#chapters {
  position: absolute;
  left: 70px;
  right: 70px;
  top: 272px;
  height: 52px;
  display: flex;
  z-index: 5;
  border-bottom: 1px solid #a9b7b526;
  gap: 10px;
}
#chapters button {
  flex: 1;
  border: 0;
  border-bottom: 2px solid transparent;
  background: none;
  color: #909fa4;
  padding: 12px 8px;
  font-size: 15px;
  text-align: left;
}
#chapters button span {
  font-size: 11px;
  color: #768b95;
  margin-right: 10px;
}
#chapters button[aria-current="true"] {
  color: #f1dec0;
  border-bottom-color: #c9ac72;
}
#chapters button:hover {
  background: #c9ac7212;
}
.columns {
  position: absolute;
  z-index: 5;
  left: 70px;
  right: 70px;
  top: 350px;
  height: 620px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 66px;
}
#article {
  padding-right: 10px;
}
#article p {
  font-size: 19px;
  line-height: 1.5;
  margin: 0 0 16px;
  color: #c8ced0;
}
#article p:first-child {
  color: #f0e9dc;
  font-size: 20px;
  line-height: 1.5;
}
.visual-column {
  min-width: 0;
  position: relative;
  border-left: 1px solid #a5b2b222;
  padding-left: 32px;
}
.rack-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 10px;
  letter-spacing: 0.15em;
  color: #abbdc5;
}
.rack-heading button {
  padding: 4px 0;
  background: none;
  border: 0;
  color: #cfbc95;
  font-size: 11px;
}
.rack {
  position: relative;
  width: 100%;
  aspect-ratio: 2172/724;
  container-type: inline-size;
  isolation: isolate;
  margin-top: -6px;
}
.rack > img {
  width: 100%;
  height: 100%;
  display: block;
  pointer-events: none;
}
.rack-controls {
  position: absolute;
  inset: 0;
}
.rack-button {
  position: absolute;
  display: grid;
  place-items: center;
  border: 1px solid #92cbd42b;
  border-radius: 0.75cqw;
  background: linear-gradient(170deg, #2c485db3, #0c1927dc 55%, #09111bd9);
  color: #c1d8e5;
  padding: 0;
  box-shadow:
    inset 0 1px 1px #ddf6ff25,
    0 2px 4px #0008;
  cursor: pointer;
  touch-action: manipulation;
}
.rack-button .plunger {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  font-size: 1.02cqw;
  letter-spacing: 0.02em;
  border-radius: inherit;
}
.rack-button[aria-pressed="true"] {
  color: #fff3d8;
  background: linear-gradient(170deg, #344957e8, #142330);
  border-color: #e0c17e;
  box-shadow:
    0 0 12px #84d8ef22,
    inset 0 1px 2px #9de4ff55;
}
.rack-button .slot-led {
  position: absolute;
  left: 46%;
  bottom: 9%;
  width: 8%;
  height: 3%;
  background: #4c6d77;
}
.rack-button[aria-pressed="true"] .slot-led {
  background: #e9ca80;
  box-shadow: 0 0 5px #f1d58c;
}
.unit-summary {
  position: relative;
  margin-top: -20px;
  min-height: 89px;
  padding: 10px 0 12px;
  border-bottom: 1px solid #c1b38e23;
}
.unit-summary > div {
  display: flex;
  align-items: center;
  gap: 12px;
}
.unit-summary strong {
  font-size: 16px;
  color: #e1ccb1;
}
.unit-summary span {
  font-size: 9px;
  letter-spacing: 0.12em;
  color: #8bc0cc;
}
.unit-summary p {
  font-size: 12px;
  line-height: 1.5;
  margin: 7px 0;
  color: #aabac0;
  max-width: 94%;
}
.unit-summary a {
  font-size: 11px;
  color: #d6bd87;
}
.unit-summary a[hidden] {
  display: none;
}
.diagram {
  margin: 15px 0 0;
  height: 171px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.diagram img {
  width: 100%;
  height: 150px;
  object-fit: contain;
}
.diagram figcaption {
  display: none;
}
#facts {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin: 12px 0 0;
}
#facts > div {
  border-top: 1px solid #9caeb638;
  padding-top: 10px;
}
#facts dt {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.13em;
  color: #8fa3ae;
  margin-bottom: 8px;
}
#facts dd {
  font-size: 13px;
  line-height: 1.45;
  margin: 0;
  color: #dbd9cd;
}
.footer {
  position: absolute;
  z-index: 5;
  bottom: 38px;
  left: 70px;
  right: 70px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid #bba77935;
  padding-top: 20px;
  font-size: 10px;
  letter-spacing: 0.12em;
  color: #a5aaa7;
}
.footer > div {
  display: flex;
  align-items: center;
  gap: 14px;
}
.footer button {
  background: none;
  border: 1px solid #7e7b6d55;
  color: #d9ccaf;
  font-size: 20px;
  width: 35px;
  height: 30px;
  line-height: 1;
}
.footer #progress-label {
  font-size: 9px;
}
#progress {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 3px;
  background: #c7aa73;
  z-index: 5;
  width: 12.5%;
}
#intro {
  position: absolute;
  inset: 0;
  background: #060b10;
  z-index: 30;
  overflow: hidden;
}
#intro[hidden] {
  display: none;
}
#intro-art {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
#intro-art path {
  fill: none;
  stroke: #a8e5ee;
  stroke-width: 1.3;
  stroke-linecap: round;
}
#spark circle {
  fill: #f3d69d;
}
#spark path {
  stroke: #ffe6af;
}
#lightning {
  filter: drop-shadow(0 0 3px #82dbef55);
}
#streaks path {
  stroke: #d7bc84;
  stroke-width: 0.9;
}
.intro-wordmark {
  position: absolute;
  top: 410px;
  left: 0;
  width: 100%;
  text-align: center;
}
.intro-wordmark > span {
  font-size: 18px;
  letter-spacing: 0.5em;
  color: #d4bb86;
}
.intro-wordmark h2 {
  font:
    100px Georgia,
    serif;
  letter-spacing: 0.08em;
  margin: 30px 0;
}
.intro-wordmark p {
  font-size: 13px;
  letter-spacing: 0.25em;
  color: #8cabb4;
}
#skip-intro {
  position: absolute;
  right: 70px;
  top: 55px;
  color: #ddc89f;
  background: #19242c;
  border: 1px solid #9a947b;
  padding: 14px 20px;
  font-size: 16px;
}
.intro-duration {
  position: absolute;
  bottom: 70px;
  left: 0;
  width: 100%;
  text-align: center;
  font-size: 10px;
  color: #8b9fa8;
  letter-spacing: 0.23em;
}
#mobile-reader {
  position: fixed;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 15;
  background: #152735;
  color: #f3e5c8;
  border: 1px solid #b79a65;
  padding: 12px 20px;
  border-radius: 4px;
  display: none;
  white-space: nowrap;
}
dialog {
  width: min(1280px, 94vw);
  max-height: 92vh;
  background: #0e161f;
  color: #e9e3d8;
  border: 1px solid #9e8b65;
  padding: 0;
  box-shadow: 0 30px 120px #000b;
}
dialog::backdrop {
  background: #02070be8;
}
dialog > header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  background: #0e161ff5;
  padding: 24px 32px;
  border-bottom: 1px solid #a7a07444;
  z-index: 2;
}
.eyebrow {
  font-size: 10px;
  letter-spacing: 0.2em;
  color: #b9a47c;
  margin: 0 0 12px;
}
dialog h2 {
  font:
    32px Georgia,
    serif;
  font-weight: 400;
  margin: 0;
}
dialog header button {
  color: #d4c5a7;
  border: 1px solid #736a59;
  background: none;
  padding: 10px;
}
#panel-body {
  padding: 28px 32px 40px;
  line-height: 1.7;
}
#panel-body p {
  color: #c6d0d4;
}
#panel-body h3 {
  font:
    26px Georgia,
    serif;
  color: #eee2cb;
  margin: 26px 0 12px;
}
#panel-body a {
  color: #e4c78e;
}
#panel-body img {
  max-width: 100%;
}
#panel-body .reader-chapter {
  max-width: 900px;
  margin: 0 auto 48px;
}
#panel-body .reader-chapter p {
  font-size: 18px;
  line-height: 1.8;
}
#panel-body .reader-chapter > span {
  font-size: 11px;
  letter-spacing: 0.18em;
  color: #a8b7bb;
}
#panel-body table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
#panel-body th,
#panel-body td {
  border-bottom: 1px solid #6d787b44;
  padding: 14px 10px;
  text-align: left;
  vertical-align: top;
}
#panel-body th {
  color: #cfb580;
}
#panel-body details {
  margin: 12px 0;
  padding: 16px;
  border: 1px solid #68756f44;
}
#panel-body summary {
  cursor: pointer;
  font-size: 17px;
  color: #eeddbd;
}
#panel-body li {
  margin: 8px 0;
}
#panel-body pre {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  background: #080d13;
  border: 1px solid #63727d55;
  padding: 20px;
  font-size: 13px;
  color: #afdae4;
}
#panel-body .sample {
  border-top: 1px solid #5d6f7555;
  margin-top: 30px;
  padding-top: 15px;
}
#panel-body .sample button,
#panel-body .sample a.button {
  display: inline-block;
  padding: 10px 16px;
  margin: 10px 12px 10px 0;
  border: 1px solid #ad9662;
  background: #17232e;
  color: #e5cf9f;
  text-decoration: none;
  font-size: 14px;
}
#trouble-search {
  width: 100%;
  padding: 13px 15px;
  background: #080f17;
  border: 1px solid #70858a;
  color: #eee;
  font-size: 16px;
}
.no-script {
  position: fixed;
  inset: 0;
  background: #081018;
  color: #eee;
  z-index: 99;
  padding: 10vw;
  overflow: auto;
}
#panel-body .rack {
  max-width: 1100px;
}
.hub-detail {
  border: 1px solid #6d7e8755;
  padding: 20px;
  margin-top: 4px;
}
.hub-detail p {
  font-size: 17px;
}
.hub-detail .state {
  color: #9bc6cf;
  font-size: 12px;
  letter-spacing: 0.16em;
}
.legend-note {
  font-size: 12px;
  color: #9caeb7;
}
.source-note {
  font-size: 13px;
  border-left: 2px solid #b6a06f;
  padding: 10px 20px;
  background: #a68b4710;
}
@media (max-width: 950px) {
  #mobile-reader {
    display: block;
  }
  dialog {
    width: 96vw;
    max-height: 94vh;
  }
  dialog > header,
  #panel-body {
    padding: 20px;
  }
  dialog h2 {
    font-size: 25px;
  }
  #panel-body th,
  #panel-body td {
    font-size: 12px;
    padding: 10px 5px;
  }
}
@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto !important;
  }
}

/* Two explicit input monitors; receiver stays display-only. */
.columns {
  top: 380px;
  height: 590px;
}
.screen-routing {
  position: absolute;
  left: 70px;
  right: 70px;
  top: 337px;
  z-index: 5;
  display: flex;
  gap: 18px;
  align-items: center;
  justify-content: space-between;
}
.screen-routing button {
  background: #10202b;
  border: 1px solid #6e81854d;
  color: #91a9b4;
  font-size: 11px;
  padding: 7px 12px;
  letter-spacing: 0.03em;
}
.screen-routing button[aria-pressed="true"] {
  border-color: #b9a16e;
  color: #e8d8b6;
  background: #b39a5820;
}
.screen-routing span {
  font-size: 9px;
  letter-spacing: 0.14em;
  color: #98b8c3;
}
.sample-monitor {
  position: absolute;
  top: 0;
  bottom: 0;
  width: calc(50% - 33px);
  z-index: 6;
  border: 1px solid #738d9955;
  background: #101a24f5;
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.sample-monitor[hidden] {
  display: none;
}
.sample-monitor[inert] {
  opacity: 0.75;
  border-color: #74818c33;
}
#left-sample {
  left: 0;
}
#right-sample {
  right: 0;
}
.sample-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  font-size: 10px;
  letter-spacing: 0.12em;
  color: #ae9971;
}
.sample-monitor h2 {
  font:
    27px Georgia,
    serif;
  margin: 2px 0 8px;
}
.sample-monitor label {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: #b7c8ce;
}
.sample-monitor select,
.sample-monitor textarea {
  background: #070f17;
  color: #c8e3eb;
  border: 1px solid #5d7c8a;
  font:
    14px/1.5 Consolas,
    monospace;
  padding: 12px;
  width: 100%;
}
.sample-monitor textarea {
  flex: 1;
  resize: none;
  min-height: 130px;
  white-space: pre;
  overflow: auto;
}
.sample-description {
  font-size: 13px !important;
  line-height: 1.5 !important;
  margin: 0 0 6px !important;
  color: #acbdc6 !important;
}
.sample-monitor button,
.sample-tools a {
  background: #1c2a34;
  color: #ddcda9;
  border: 1px solid #8e815e;
  padding: 7px 11px;
  font-size: 12px;
  cursor: pointer;
  text-decoration: none;
}
.sample-tools {
  display: flex;
  gap: 10px;
  align-items: center;
}
.sample-message {
  font-size: 10px !important;
  line-height: 1.5 !important;
  margin: 0 !important;
  color: #96abb4 !important;
}
.world-menu {
  padding: 10px 12px;
  border-bottom: 1px solid #71838a33;
}
.world-menu summary {
  cursor: pointer;
  color: #d9c69b;
  font-size: 15px;
}
.world-menu button {
  font-size: 12px;
  padding: 10px 0;
}