:root {
  color-scheme: dark;
  --bg: #030914;
  --bg-soft: #071321;
  --panel: rgba(8, 25, 42, 0.92);
  --panel-strong: #0a1b2d;
  --line: rgba(76, 209, 236, 0.24);
  --line-strong: rgba(76, 209, 236, 0.58);
  --cyan: #4cd1ec;
  --cyan-bright: #7be8f8;
  --orange: #ff7a32;
  --text: #eef9fc;
  --muted: #9eb6c3;
  --shadow: 0 24px 64px rgba(0, 0, 0, 0.38);
  --radius: 18px;
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  background:
    radial-gradient(circle at 50% -20%, rgba(39, 156, 190, 0.18), transparent 38rem),
    linear-gradient(180deg, #06101d 0%, var(--bg) 52%, #020711 100%);
  font-family: "Segoe UI", "Noto Sans TC", "Microsoft JhengHei", Arial, sans-serif;
  line-height: 1.6;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  content: "";
  pointer-events: none;
  opacity: 0.22;
  background-image:
    linear-gradient(rgba(76, 209, 236, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(76, 209, 236, 0.06) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: linear-gradient(to bottom, black, transparent 85%);
}

a {
  color: inherit;
}

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

button {
  font: inherit;
}

button:focus-visible,
a:focus-visible {
  outline: 3px solid var(--cyan-bright);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 1000;
  padding: 10px 14px;
  color: #001018;
  background: var(--cyan-bright);
  border-radius: 8px;
  transform: translateY(-150%);
  transition: transform 160ms ease;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--line);
  background: rgba(3, 9, 20, 0.82);
  backdrop-filter: blur(16px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(100% - 32px, 1344px);
  min-height: 66px;
  margin: 0 auto;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-cluster {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 12px;
}

.brand-site-link {
  display: inline-flex;
  padding: 5px 8px;
  align-items: center;
  gap: 4px;
  color: var(--cyan-bright);
  border: 1px solid rgba(76, 209, 236, 0.3);
  background: rgba(8, 25, 42, 0.48);
  border-radius: 6px;
  font-size: 9px;
  font-weight: 800;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
}

.brand-site-link:hover {
  color: #031610;
  border-color: #69f5b8;
  background: #69f5b8;
}

.brand-logo {
  width: 48px;
  height: 48px;
  flex: 0 0 auto;
  object-fit: cover;
  border: 1px solid rgba(84, 198, 174, 0.38);
  border-radius: 11px;
  box-shadow: 0 0 24px rgba(84, 198, 174, 0.2);
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 16px;
  line-height: 1.25;
}

.brand small {
  margin-top: 3px;
  color: var(--muted);
  font-size: 9px;
  letter-spacing: 0.18em;
}

.header-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 12px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.education-entry {
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  color: var(--muted);
  border: 1px solid rgba(158, 182, 195, 0.24);
  background: rgba(8, 25, 42, 0.62);
  border-radius: 7px;
  cursor: pointer;
  font-size: 10px;
  font-weight: 700;
  line-height: 1.25;
  text-decoration: none;
}

.education-entry.is-active {
  color: #69f5b8;
  border-color: rgba(105, 245, 184, 0.48);
}

.education-login-badge {
  display: inline-flex;
  max-width: 300px;
  padding: 7px 11px;
  align-items: center;
  overflow: hidden;
  color: var(--muted);
  border: 1px solid rgba(158, 182, 195, 0.24);
  background: rgba(8, 25, 42, 0.8);
  border-radius: 999px;
  font-size: 10px;
  font-weight: 800;
  line-height: 1.25;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.education-login-badge::before {
  width: 7px;
  height: 7px;
  margin-right: 7px;
  flex: 0 0 auto;
  background: #8196a1;
  border-radius: 50%;
  content: "";
}

.education-login-badge[data-state="active"] {
  color: #d9fff4;
  border-color: rgba(92, 255, 199, 0.55);
  background: rgba(21, 115, 88, 0.24);
}

.education-login-badge[data-state="active"]::before {
  background: #5cffc7;
  box-shadow: 0 0 10px rgba(92, 255, 199, 0.8);
}

.staff-login-entry {
  color: var(--cyan-bright);
  border-color: rgba(76, 209, 236, 0.42);
}

.header-status.is-unavailable {
  color: #8196a1;
}

.header-status.is-unavailable .status-dot {
  background: #8196a1;
  box-shadow: none;
}

.status-dot {
  width: 8px;
  height: 8px;
  background: #66f4ba;
  border-radius: 999px;
  box-shadow: 0 0 12px rgba(102, 244, 186, 0.8);
}

main {
  width: min(100% - 32px, 1344px);
  margin: 0 auto;
}

.hero-copy {
  max-width: 820px;
  padding: 56px 0 30px;
}

.eyebrow,
.card-eyebrow {
  margin: 0 0 8px;
  color: var(--cyan);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.hero-copy h1,
.section-heading h2,
.sponsor-callout h2 {
  margin: 0;
  letter-spacing: -0.035em;
}

.hero-copy h1 {
  font-size: clamp(32px, 4vw, 54px);
  line-height: 1.08;
}

.hero-copy > p:last-child {
  max-width: 700px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 17px;
}

.experience-grid {
  display: grid;
  grid-template-columns: 160px minmax(0, 960px) 160px;
  gap: 16px;
  align-items: start;
}

.ad-rail,
.simulator-card,
.feature-card,
.sponsor-callout {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(11, 31, 51, 0.94), rgba(5, 16, 29, 0.96));
  box-shadow: var(--shadow);
}

.ad-rail {
  position: sticky;
  top: 82px;
  display: flex;
  min-height: 600px;
  padding: 14px;
  flex-direction: column;
  overflow: hidden;
  border-radius: 14px;
}

.ad-rail::after {
  position: absolute;
  right: -50%;
  bottom: 12%;
  width: 180px;
  height: 180px;
  content: "";
  background: rgba(76, 209, 236, 0.1);
  border-radius: 50%;
  filter: blur(24px);
}

.ad-label {
  position: relative;
  z-index: 1;
  align-self: flex-start;
  padding: 4px 7px;
  color: var(--cyan-bright);
  border: 1px solid var(--line-strong);
  border-radius: 5px;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.ad-visual {
  position: relative;
  height: 176px;
  margin: 28px -14px 20px;
}

.ad-orbit,
.ad-crosshair {
  position: absolute;
  inset: 50% auto auto 50%;
  transform: translate(-50%, -50%);
}

.ad-orbit {
  width: 118px;
  height: 118px;
  border: 1px solid var(--line-strong);
  border-top-color: var(--orange);
  border-radius: 50%;
  box-shadow: 0 0 36px rgba(76, 209, 236, 0.14);
}

.ad-orbit::before,
.ad-orbit::after {
  position: absolute;
  content: "";
  border: 1px solid rgba(76, 209, 236, 0.32);
  border-radius: 50%;
}

.ad-orbit::before {
  inset: 18px;
}

.ad-orbit::after {
  inset: 40px;
  background: rgba(76, 209, 236, 0.18);
}

.ad-crosshair {
  width: 140px;
  height: 1px;
  background: var(--line);
}

.ad-crosshair::after {
  position: absolute;
  top: -70px;
  left: 70px;
  width: 1px;
  height: 140px;
  content: "";
  background: var(--line);
}

.ad-copy {
  position: relative;
  z-index: 1;
}

.ad-kicker {
  color: var(--orange);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.ad-copy h2 {
  margin: 8px 0 10px;
  font-size: 20px;
  line-height: 1.25;
}

.ad-copy p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.ad-image {
  position: relative;
  z-index: 1;
  width: 100%;
  max-height: 170px;
  margin-top: 18px;
  object-fit: contain;
  border-radius: 8px;
}

.ad-action {
  position: relative;
  z-index: 1;
  display: block;
  margin-top: auto;
  padding: 11px 9px;
  color: #031018;
  background: var(--cyan);
  border-radius: 8px;
  font-size: 12px;
  font-weight: 800;
  text-align: center;
  text-decoration: none;
}

.is-disabled {
  color: #79909c !important;
  background: rgba(121, 144, 156, 0.1) !important;
  border-color: rgba(121, 144, 156, 0.2) !important;
  cursor: not-allowed;
  pointer-events: none;
}

.simulator-card {
  position: relative;
  min-width: 0;
  overflow: hidden;
  border-radius: var(--radius);
}

.simulator-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 18px;
  border-bottom: 1px solid var(--line);
}

.simulator-heading h2 {
  margin: 0;
  font-size: 22px;
}

.heading-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.heading-start-action {
  min-height: 42px;
  padding: 0 16px;
  gap: 12px;
  border-radius: 8px;
  box-shadow: 0 8px 24px rgba(76, 209, 236, 0.16);
  font-size: 13px;
  white-space: nowrap;
}

.education-heading-action {
  min-height: 42px;
  padding: 0 14px;
  color: #69f5b8;
  border: 1px solid rgba(105, 245, 184, 0.55);
  background: rgba(22, 125, 94, 0.16);
  border-radius: 8px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 900;
  white-space: nowrap;
}

.education-heading-action[aria-expanded="true"] {
  color: #031610;
  background: #69f5b8;
}

.poster-pill {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 4px 9px;
  color: var(--cyan-bright);
  border: 1px solid var(--line-strong);
  background: rgba(76, 209, 236, 0.06);
  border-radius: 999px;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.1em;
}

.desktop-experience {
  min-width: 0;
}

.promo-poster,
.loading-panel,
.unity-stage {
  position: relative;
  width: 100%;
  aspect-ratio: 8 / 5;
  min-height: 420px;
}

.promo-poster {
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  isolation: isolate;
  background:
    linear-gradient(90deg, rgba(2, 10, 21, 0.97) 0%, rgba(2, 10, 21, 0.80) 44%, rgba(2, 10, 21, 0.22) 100%),
    linear-gradient(180deg, rgba(7, 22, 37, 0.05), rgba(2, 10, 21, 0.82)),
    url("promo-poster.png") center / cover,
    radial-gradient(circle at 74% 40%, #1a6f83, #071829 52%, #020915);
}

.poster-grid {
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: 0.38;
  background-image:
    linear-gradient(rgba(76, 209, 236, 0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(76, 209, 236, 0.1) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: linear-gradient(90deg, black, transparent 80%);
}

.poster-content {
  width: min(610px, 76%);
  padding: clamp(22px, 4vw, 42px);
}

.poster-content h3 {
  max-width: 520px;
  margin: 14px 0 10px;
  font-size: clamp(28px, 4vw, 46px);
  line-height: 1.12;
  letter-spacing: -0.035em;
}

.poster-content > p {
  max-width: 520px;
  margin: 0;
  color: #c2d6df;
  font-size: 15px;
}

.control-hints {
  display: flex;
  margin: 22px 0;
  padding: 0;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
}

.control-hints li {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 8px;
  color: var(--muted);
  border: 1px solid rgba(158, 182, 195, 0.18);
  background: rgba(2, 10, 21, 0.58);
  border-radius: 7px;
  font-size: 11px;
}

kbd {
  color: var(--text);
  font-family: inherit;
  font-weight: 800;
}

.primary-action,
.secondary-action {
  display: inline-flex;
  min-height: 48px;
  padding: 0 18px;
  align-items: center;
  justify-content: center;
  gap: 28px;
  color: #00131b;
  border: 1px solid var(--cyan-bright);
  background: linear-gradient(135deg, var(--cyan-bright), var(--cyan));
  border-radius: 9px;
  box-shadow: 0 12px 28px rgba(76, 209, 236, 0.18);
  cursor: pointer;
  font-weight: 900;
  text-decoration: none;
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.primary-action:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 34px rgba(76, 209, 236, 0.28);
}

.secondary-action {
  color: var(--text);
  border-color: var(--line-strong);
  background: rgba(76, 209, 236, 0.08);
  box-shadow: none;
}

.loading-panel {
  display: flex;
  padding: 40px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  background: radial-gradient(circle at center, #0e3547, #05111f 58%, #020915);
}

.loading-radar {
  position: relative;
  width: 112px;
  height: 112px;
  margin-bottom: 24px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  background:
    linear-gradient(var(--line), var(--line)) center / 100% 1px no-repeat,
    linear-gradient(90deg, var(--line), var(--line)) center / 1px 100% no-repeat;
}

.loading-radar::after {
  position: absolute;
  inset: 50% 50% auto auto;
  width: 48%;
  height: 2px;
  content: "";
  background: var(--cyan-bright);
  transform-origin: left;
  animation: radar-spin 1.4s linear infinite;
  box-shadow: 0 0 16px var(--cyan);
}

.loading-label {
  margin: 0 0 16px;
  font-weight: 800;
}

.progress-track {
  width: min(430px, 100%);
  height: 8px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.4);
  border-radius: 999px;
}

#progress-bar {
  display: block;
  width: 0%;
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--cyan-bright));
  box-shadow: 0 0 14px rgba(76, 209, 236, 0.7);
  transition: width 160ms ease;
}

.load-status {
  min-height: 26px;
  margin: 14px 0;
  color: var(--muted);
  font-size: 13px;
}

.unity-stage {
  background: #000;
}

.unity-stage:fullscreen,
.unity-stage:-webkit-full-screen {
  width: 100vw;
  height: 100vh;
  max-width: none;
  aspect-ratio: auto;
}

#unity-canvas {
  display: block;
  width: 100%;
  height: 100%;
  background: #000;
}

.unity-warning {
  position: absolute;
  top: 12px;
  left: 50%;
  z-index: 3;
  width: min(90%, 660px);
  transform: translateX(-50%);
}

.unity-warning > div {
  margin-bottom: 8px;
  padding: 10px 14px;
  color: #12100a;
  background: #ffd27a;
  border-radius: 7px;
  box-shadow: var(--shadow);
}

.unity-warning > div.is-error {
  color: white;
  background: #a92f37;
}

.game-toolbar {
  position: absolute;
  right: 10px;
  bottom: 10px;
  left: 10px;
  z-index: 2;
  display: flex;
  min-height: 38px;
  padding: 6px 8px 6px 13px;
  align-items: center;
  justify-content: space-between;
  color: var(--muted);
  border: 1px solid rgba(76, 209, 236, 0.16);
  background: rgba(2, 9, 18, 0.76);
  border-radius: 8px;
  backdrop-filter: blur(10px);
  font-size: 11px;
  pointer-events: none;
}

.game-toolbar-actions {
  display: flex;
  gap: 7px;
  pointer-events: auto;
}

#keyboard-focus-status {
  color: #e6f6fb;
  font-weight: 700;
}

#keyboard-focus-status.is-active {
  color: #69f5b8;
}

#restart-button,
#fullscreen-button,
#vertical-guide-button {
  min-height: 28px;
  padding: 0 11px;
  color: var(--text);
  border: 1px solid var(--line-strong);
  background: rgba(76, 209, 236, 0.1);
  border-radius: 6px;
  cursor: pointer;
  font-size: 11px;
  font-weight: 800;
}

.education-settings-panel {
  position: absolute;
  top: 76px;
  right: 18px;
  z-index: 8;
  width: min(640px, calc(100% - 36px));
  max-height: calc(100% - 96px);
  padding: 20px;
  overflow-y: auto;
  color: var(--text);
  border: 1px solid var(--line-strong);
  background: rgba(3, 13, 24, 0.96);
  border-radius: 12px;
  box-shadow: var(--shadow);
}

.panel-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.panel-heading h3,
.education-dialog h2 {
  margin: 2px 0 0;
}

.panel-kicker {
  color: var(--cyan);
  font-size: 9px;
  font-weight: 900;
  letter-spacing: 0.16em;
}

#education-settings-close,
.education-dialog-close {
  width: 32px;
  height: 32px;
  color: var(--text);
  border: 1px solid var(--line);
  background: rgba(76, 209, 236, 0.08);
  border-radius: 7px;
  cursor: pointer;
}

.education-session-status {
  margin: 8px 0 14px;
  color: #69f5b8;
  font-size: 12px;
}

.education-panel-help {
  margin: -4px 0 14px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.6;
}

.education-presets {
  display: grid;
  margin-bottom: 8px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.education-presets button {
  display: grid;
  min-height: 58px;
  padding: 9px 10px;
  align-content: center;
  gap: 3px;
  color: var(--text);
  border: 1px solid var(--line);
  background: rgba(76, 209, 236, 0.06);
  border-radius: 8px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 900;
}

.education-presets button small {
  color: var(--muted);
  font-size: 9px;
  font-weight: 600;
}

.education-presets button.is-active {
  color: #031610;
  border-color: #69f5b8;
  background: #69f5b8;
}

.education-presets button.is-active small {
  color: #164737;
}

.education-preset-status {
  margin: 0 0 14px;
  color: var(--cyan-bright);
  font-size: 11px;
  font-weight: 800;
}

.education-controller-card {
  display: grid;
  margin-bottom: 16px;
  padding: 14px;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px 18px;
  border: 1px solid rgba(105, 245, 184, 0.32);
  background: rgba(22, 125, 94, 0.1);
  border-radius: 10px;
}

.education-controller-card h4 {
  margin: 2px 0 4px;
  font-size: 14px;
}

.education-controller-card p {
  margin: 0;
}

.controller-kicker {
  color: #69f5b8;
  font-size: 8px;
  font-weight: 900;
  letter-spacing: 0.14em;
}

#education-controller-status {
  color: var(--cyan-bright);
  font-size: 10px;
  overflow-wrap: anywhere;
}

.controller-switch {
  display: flex;
  min-height: 34px;
  padding: 0 10px;
  align-items: center;
  gap: 7px;
  color: var(--text);
  border: 1px solid var(--line);
  background: rgba(2, 9, 18, 0.55);
  border-radius: 7px;
  font-size: 10px;
  font-weight: 800;
  cursor: pointer;
}

.controller-switch input {
  accent-color: #69f5b8;
}

.controller-map {
  display: grid;
  grid-column: 1 / -1;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 7px;
}

.controller-map span {
  padding: 7px 8px;
  color: var(--muted);
  border: 1px solid rgba(76, 209, 236, 0.16);
  background: rgba(2, 9, 18, 0.5);
  border-radius: 6px;
  font-size: 9px;
}

.controller-map b {
  display: block;
  color: var(--text);
  font-size: 10px;
}

.controller-note {
  grid-column: 1 / -1;
  color: #7897a8;
  font-size: 9px;
  line-height: 1.55;
}

.controller-calibration-actions {
  display: flex;
  grid-column: 1 / -1;
  align-items: center;
  gap: 10px;
}

.controller-calibration-actions button,
.controller-calibration-buttons button {
  min-height: 34px;
  padding: 0 12px;
  color: var(--text);
  border: 1px solid var(--line);
  background: rgba(2, 9, 18, 0.62);
  border-radius: 7px;
  font: inherit;
  font-size: 10px;
  font-weight: 800;
  cursor: pointer;
}

.controller-calibration-actions button:hover,
.controller-calibration-buttons button:first-child:hover {
  color: #031610;
  border-color: #69f5b8;
  background: #69f5b8;
}

#education-calibration-summary {
  color: #9bb8c7;
  font-size: 10px;
}

.controller-calibration-panel {
  display: grid;
  grid-column: 1 / -1;
  gap: 9px;
  padding: 12px;
  border: 1px solid rgba(76, 209, 236, 0.28);
  background: rgba(2, 9, 18, 0.72);
  border-radius: 8px;
}

.controller-calibration-panel[hidden] {
  display: none;
}

.controller-calibration-panel > div:first-child {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

#education-calibration-prompt {
  color: var(--text);
  font-size: 12px;
}

#education-calibration-progress {
  flex: 0 0 auto;
  color: #69f5b8;
  font-size: 9px;
  font-weight: 800;
}

.controller-calibration-panel > p {
  color: #8cabb9;
  font-size: 9px;
}

#education-calibration-axes {
  padding: 8px 10px;
  color: var(--cyan-bright);
  background: rgba(76, 209, 236, 0.07);
  border-radius: 6px;
  font: 700 9px/1.5 ui-monospace, SFMono-Regular, Consolas, monospace;
  overflow-wrap: anywhere;
}

.controller-calibration-buttons {
  display: flex;
  gap: 8px;
}

.controller-calibration-buttons button:first-child {
  border-color: rgba(105, 245, 184, 0.55);
}

.education-control-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px 16px;
}

.education-control-grid label,
#education-login-form label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 700;
}

.education-control-grid label > small {
  min-height: 16px;
  color: #7897a8;
  font-size: 9px;
  font-weight: 500;
}

.education-control-grid output {
  justify-self: end;
  margin-top: -25px;
  color: var(--text);
}

.education-control-grid input[type="range"] {
  width: 100%;
  accent-color: var(--cyan);
}

.education-panel-action {
  margin-top: 16px;
  padding: 8px 12px;
  color: var(--text);
  border: 1px solid var(--line);
  background: rgba(76, 209, 236, 0.08);
  border-radius: 7px;
  cursor: pointer;
}

.education-modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: grid;
  padding: 20px;
  place-items: center;
  background: rgba(0, 5, 12, 0.82);
  backdrop-filter: blur(10px);
}

.education-dialog {
  position: relative;
  width: min(440px, 100%);
  padding: 26px;
  border: 1px solid var(--line-strong);
  background: linear-gradient(180deg, #0b2034, #05111f);
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.education-dialog > p:not(.panel-kicker) {
  color: var(--muted);
}

.education-dialog-close {
  position: absolute;
  top: 14px;
  right: 14px;
}

#education-login-form {
  display: grid;
  margin-top: 18px;
  gap: 14px;
}

#education-login-form input {
  min-height: 42px;
  padding: 0 12px;
  color: var(--text);
  border: 1px solid var(--line);
  background: rgba(1, 8, 16, 0.72);
  border-radius: 7px;
}

.education-auth-status {
  min-height: 24px;
  margin-bottom: 0;
  color: #ffd27a !important;
  font-size: 12px;
}

.education-account-actions {
  display: flex;
  margin-top: 14px;
  align-items: center;
  gap: 14px;
}

.education-account-actions a {
  color: var(--cyan-bright);
  font-size: 12px;
}

.narrow-message {
  display: none;
  min-height: 320px;
  padding: 54px 34px;
  align-items: center;
  justify-content: center;
  gap: 22px;
  text-align: left;
  background:
    linear-gradient(135deg, rgba(76, 209, 236, 0.06), transparent 48%),
    #061321;
}

.narrow-icon {
  display: grid;
  min-width: 64px;
  height: 64px;
  place-items: center;
  color: var(--cyan-bright);
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  font-size: 28px;
}

.narrow-message h3 {
  margin: 0 0 8px;
  font-size: 24px;
}

.narrow-message p {
  max-width: 620px;
  margin: 0;
  color: var(--muted);
}

.feature-section {
  padding: 86px 0 32px;
}

.section-heading h2 {
  font-size: clamp(30px, 4vw, 46px);
}

.feature-grid {
  display: grid;
  margin-top: 28px;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.feature-card {
  min-height: 230px;
  padding: 25px;
  border-radius: 14px;
}

.feature-index {
  color: var(--orange);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.16em;
}

.feature-card h3 {
  margin: 34px 0 8px;
  font-size: 22px;
}

.feature-card p {
  margin: 0;
  color: var(--muted);
}

.sponsor-callout {
  display: flex;
  margin: 48px 0 80px;
  padding: clamp(24px, 4vw, 42px);
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  border-radius: var(--radius);
}

.sponsor-callout h2 {
  font-size: clamp(28px, 3.5vw, 42px);
}

.sponsor-callout p:last-child {
  max-width: 720px;
  margin: 12px 0 0;
  color: var(--muted);
}

.sponsor-callout .primary-action {
  min-width: 210px;
  flex-shrink: 0;
}

.site-footer {
  display: flex;
  width: min(100% - 32px, 1344px);
  margin: 0 auto;
  padding: 24px 0 34px;
  justify-content: space-between;
  gap: 24px;
  color: #77909d;
  border-top: 1px solid var(--line);
  font-size: 12px;
}

.site-footer p {
  margin: 0;
}

.noscript-message {
  position: fixed;
  right: 16px;
  bottom: 16px;
  left: 16px;
  z-index: 1000;
  padding: 14px;
  color: #201600;
  background: #ffd27a;
  border-radius: 8px;
  text-align: center;
}

[hidden] {
  display: none !important;
}

@keyframes radar-spin {
  to { transform: rotate(360deg); }
}

@media (max-width: 1199.98px) {
  .education-heading-action,
  .education-settings-panel {
    display: none !important;
  }
  .heading-start-action {
    display: none;
  }

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

  .simulator-card {
    order: 1;
  }

  .ad-rail-left {
    order: 2;
  }

  .ad-rail-right {
    order: 3;
  }

  .ad-rail {
    position: relative;
    top: auto;
    display: grid;
    min-height: 220px;
    grid-template-columns: 130px minmax(0, 1fr) minmax(180px, auto);
    align-items: center;
    gap: 20px;
  }

  .ad-label {
    position: absolute;
    top: 14px;
    left: 14px;
  }

  .ad-visual {
    height: 170px;
    margin: 18px 0 0;
  }

  .ad-action {
    margin-top: 18px;
  }

  .desktop-experience {
    display: none;
  }

  .narrow-message {
    display: flex;
  }
}

@media (max-width: 760px) {
  .brand-cluster {
    gap: 7px;
  }

  .brand-site-link {
    padding: 4px 6px;
    font-size: 8px;
  }

  .brand-logo {
    width: 42px;
    height: 42px;
  }

  .header-status {
    gap: 5px;
    font-size: 10px;
  }

  .header-actions {
    gap: 7px;
  }

  .education-entry {
    padding: 5px 7px;
    font-size: 9px;
  }

  .education-login-badge {
    max-width: 180px;
    padding: 5px 7px;
    font-size: 9px;
  }

  .education-control-grid {
    grid-template-columns: 1fr;
  }

  .education-controller-card {
    grid-template-columns: 1fr;
  }

  .controller-map {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .status-dot {
    width: 6px;
    height: 6px;
  }

  .hero-copy {
    padding-top: 38px;
  }

  .hero-copy > p:last-child {
    font-size: 15px;
  }

  .simulator-heading {
    align-items: flex-start;
    gap: 12px;
  }

  .narrow-message {
    padding: 40px 22px;
    align-items: flex-start;
    flex-direction: column;
  }

  .ad-rail {
    display: flex;
    min-height: 320px;
  }

  .ad-visual {
    width: 140px;
    height: 120px;
    margin: 42px auto 8px;
  }

  .ad-action {
    width: 100%;
  }

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

  .feature-card {
    min-height: 190px;
  }

  .sponsor-callout,
  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .sponsor-callout .primary-action {
    width: 100%;
  }
}

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

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