:root {
  /* The landing page opens as a calm paper-and-ink interface. */
  --bg: #f5f7fb;
  --bg-2: #ffffff;
  --panel: rgba(255, 255, 255, 0.78);
  --line: rgba(41, 57, 82, 0.14);
  --line-2: rgba(41, 57, 82, 0.28);
  --text: #182235;
  --dim: #52617a;
  --faint: #8290a5;
  --c-main: #c88314;
  --c-support: #108d84;
  --c-backup: #cf5365;
  --ink: #182235;
  --on-accent: #182235;
  --shadow: rgba(37, 53, 79, 0.16);
  --scene-backdrop: #eef2f9;
  --scene-fog: #dfe6f2;
  --scene-haze-low: #cbd8ea;
  --scene-haze-high: #f5f8fd;
  --scene-cloud-base: #b8c9df;
  --scene-cloud-top: #f3f7fc;
  --mono: 'JetBrains Mono', ui-monospace, 'SFMono-Regular', Menlo, monospace;
  --pixel: 'Silkscreen', 'JetBrains Mono', monospace;
  --cn: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'HarmonyOS Sans SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  --pad: clamp(16px, 3.4vw, 52px);
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
  --ease-back: cubic-bezier(0.34, 1.56, 0.64, 1);
  color-scheme: light;
}

html[data-theme='dark'] {
  --bg: #07090e;
  --bg-2: #0b0f17;
  --panel: rgba(14, 19, 29, 0.72);
  --line: rgba(150, 170, 205, 0.13);
  --line-2: rgba(150, 170, 205, 0.24);
  --text: #e8ecf3;
  --dim: #939cb0;
  --faint: #5c6579;
  --c-main: #ffc24b;
  --c-support: #5ee6d0;
  --c-backup: #ff7d8c;
  --ink: #0a0d14;
  --on-accent: #0a0d14;
  --shadow: rgba(0, 0, 0, 0.42);
  --scene-backdrop: #07090e;
  --scene-fog: #0c1220;
  --scene-haze-low: #121c33;
  --scene-haze-high: #2c3b5e;
  --scene-cloud-base: #1b2233;
  --scene-cloud-top: #3a4560;
  color-scheme: dark;
}

html,
body,
.app,
.top,
.intro,
.nodes,
.node,
.statusbar,
.foot,
.chat,
.icon-btn,
.btn-ghost {
  transition:
    background-color 0.45s var(--ease),
    border-color 0.45s var(--ease),
    color 0.45s var(--ease),
    box-shadow 0.45s var(--ease);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  background: var(--bg);
  overflow-x: clip;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100svh;
  background:
    radial-gradient(1200px 600px at 50% 30%, color-mix(in srgb, var(--c-support) 9%, transparent), transparent 70%),
    var(--bg);
  color: var(--text);
  font-family: var(--cn);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}

[hidden] {
  display: none !important;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

kbd {
  display: inline-grid;
  place-items: center;
  min-width: 1.7em;
  height: 1.7em;
  padding: 0 0.4em;
  margin: 0 0.1em;
  font-family: var(--mono);
  font-size: 0.85em;
  color: var(--text);
  border: 1px solid var(--line-2);
  border-bottom-width: 2px;
  border-radius: 3px;
  line-height: 1;
}

:focus-visible {
  outline: 2px solid var(--c-main);
  outline-offset: 3px;
}

.skip {
  position: fixed;
  left: 12px;
  top: -60px;
  z-index: 100;
  padding: 10px 14px;
  background: var(--c-main);
  color: var(--ink);
  font-family: var(--mono);
  font-weight: 700;
  transition: top 0.2s;
}
.skip:focus {
  top: 12px;
}


/* ───────────────────────── mark ───────────────────────── */
.mark {
  display: inline-block;
  width: 30px;
  height: 30px;
  background: url('../favicon.svg') center / contain no-repeat;
  image-rendering: pixelated;
  box-shadow: 0 0 24px rgba(255, 194, 75, 0.35);
  flex: none;
}
.mark--lg {
  width: 56px;
  height: 56px;
}

/* ───────────────────────── boot ───────────────────────── */
.boot {
  position: fixed;
  inset: 0;
  z-index: 90;
  display: grid;
  place-items: center;
  background: var(--bg);
  cursor: pointer;
  transition:
    opacity 0.7s var(--ease),
    visibility 0.7s;
}
.boot.is-done {
  opacity: 0;
  visibility: hidden;
}
.boot__inner {
  width: min(440px, 84vw);
  font-family: var(--mono);
  font-size: 12px;
  color: var(--dim);
}
.boot__logo {
  margin-bottom: 22px;
  animation: bootPulse 1.2s steps(2) infinite;
}
@keyframes bootPulse {
  50% {
    filter: brightness(1.25);
  }
}
.boot__log {
  margin: 0 0 18px;
  min-height: 7.5em;
  font: inherit;
  line-height: 1.55;
  white-space: pre-wrap;
}
.boot__log b {
  color: var(--c-main);
  font-weight: 500;
}
.boot__bar {
  height: 6px;
  background: rgba(255, 255, 255, 0.06);
  position: relative;
  overflow: hidden;
}
.boot__bar i {
  position: absolute;
  inset: 0;
  transform-origin: left;
  transform: scaleX(0);
  background: repeating-linear-gradient(90deg, var(--c-main) 0 8px, transparent 8px 10px);
  transition: transform 0.25s steps(6);
}
.boot__hint {
  margin-top: 14px;
  font-family: var(--pixel);
  font-size: 9px;
  letter-spacing: 0.2em;
  color: var(--faint);
}

/* ───────────────────────── app shell ───────────────────────── */
.app {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  padding: 0 var(--pad);
}
.app > main {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.top {
  position: relative;
  z-index: 5;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 28px;
  height: 76px;
  border-bottom: 1px solid var(--line);
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand__name {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: 0.02em;
}
.brand__name em {
  font-style: normal;
  color: var(--c-main);
  margin-right: 0.4em;
}
.brand__cn {
  font-size: 12px;
  color: var(--faint);
  padding-left: 12px;
  border-left: 1px solid var(--line-2);
  letter-spacing: 0.3em;
}
.top__ticker {
  min-width: 0;
  overflow: hidden;
  mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent);
}
.ticker {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--faint);
  white-space: nowrap;
  display: flex;
  width: max-content;
  animation: ticker 48s linear infinite;
}
.ticker span {
  padding-right: 4em;
}
@keyframes ticker {
  to {
    transform: translateX(-50%);
  }
}
.top__meta {
  display: flex;
  align-items: center;
  gap: 22px;
}
.pill {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.pill--live {
  color: var(--c-main);
}
.pill--live i {
  width: 7px;
  height: 7px;
  background: currentColor;
  box-shadow: 0 0 10px currentColor;
  animation: blink 1.6s steps(1) infinite;
}
@keyframes blink {
  60% {
    opacity: 0.25;
  }
}
.meta {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  display: inline-flex;
  gap: 10px;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}
.meta__k {
  color: var(--faint);
}
.meta--dim {
  color: var(--dim);
}
.icon-btn {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-2);
  color: var(--dim);
  transition:
    color 0.2s,
    border-color 0.2s,
    background 0.2s;
}
.icon-btn:hover {
  color: var(--text);
  border-color: var(--dim);
  background: color-mix(in srgb, var(--text) 6%, transparent);
}

.theme-btn,
#theme-toggle {
  position: relative;
  overflow: hidden;
}
.theme-btn svg,
#theme-toggle svg {
  width: 16px;
  height: 16px;
  transition: transform 0.45s var(--ease), opacity 0.3s;
}
.theme-btn .moon,
#theme-toggle .theme-icon--moon {
  display: none;
}
html[data-theme='dark'] .theme-btn .sun,
html[data-theme='dark'] #theme-toggle .theme-icon--sun {
  display: none;
}
html[data-theme='dark'] .theme-btn .moon,
html[data-theme='dark'] #theme-toggle .theme-icon--moon {
  display: block;
}
.theme-btn:hover svg,
#theme-toggle:hover svg {
  transform: rotate(18deg) scale(1.08);
}
.icon-btn svg {
  width: 16px;
  height: 16px;
}
#sound .wave {
  display: none;
}
#sound[aria-pressed='true'] {
  color: var(--c-main);
  border-color: color-mix(in srgb, var(--c-main) 50%, transparent);
}
#sound[aria-pressed='true'] .wave {
  display: block;
}
#sound[aria-pressed='true'] .mute {
  display: none;
}

/* ───────────────────────── stage ───────────────────────── */
.stage {
  --shift: 0;
  --lift: 0.06;
  --fit: 1.1;
  position: relative;
  height: clamp(460px, calc(100svh - 76px - 300px), 820px);
  min-height: 460px;
  /* Keep projected station tags in the page stacking context. Expanded
     service cards rise into the stage, but must not paint over those tags. */
  isolation: auto;
}
/* Keep the 3D scene calm and focused. The former telemetry HUD and controls
   remain in the DOM for keyboard compatibility, but stay out of the visual
   presentation. */
.stage__bar,
.stage__title,
.side--r,
.statusbar,
.foot,
.top__ticker,
.pill--live {
  display: none !important;
}
.intro__lede:empty {
  display: none;
}
.stage__hint {
  display: none;
}
.top__meta {
  grid-column: 3;
}
.stage__canvas {
  position: absolute;
  top: 0;
  bottom: 0;
  /* bleed to the viewport edges, past the capped content column */
  left: calc(50% - 50vw);
  right: calc(50% - 50vw);
  z-index: 0;
  mask-image: linear-gradient(180deg, transparent 0, #000 9%, #000 86%, transparent 100%);
  -webkit-mask-image: linear-gradient(180deg, transparent 0, #000 9%, #000 86%, transparent 100%);
  opacity: 0;
  transition: opacity 1.2s var(--ease);
}
.is-live .stage__canvas {
  opacity: 1;
}
.stage__canvas canvas {
  display: block;
  width: 100%;
  height: 100%;
  cursor: grab;
}
.stage__canvas::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(180deg, rgba(255, 255, 255, 0.022) 0 1px, transparent 1px 3px);
  mix-blend-mode: overlay;
}
.stage__notice {
  position: absolute;
  z-index: 4;
  left: 0;
  top: clamp(28px, 8%, 72px);
  display: flex;
  align-items: center;
  gap: 14px;
  max-width: min(680px, 86vw);
  padding: 8px 12px 8px 0;
  color: var(--text);
  font-family: var(--mono);
  font-size: clamp(12px, 1.1vw, 16px);
  letter-spacing: 0.16em;
  line-height: 1.4;
  pointer-events: none;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease), color 0.35s;
}
.is-live .stage__notice {
  opacity: 1;
  transform: none;
}
.stage__notice-mark {
  flex: none;
  color: var(--c-main);
  font-family: var(--mono);
  font-size: inherit;
  font-weight: 700;
}
.stage__notice-caret {
  flex: none;
  width: auto;
  height: auto;
  color: var(--dim);
  font-family: var(--mono);
  font-style: normal;
  animation: blink 1s steps(1) infinite;
}
.stage__fallback {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  text-align: center;
  color: var(--dim);
  font-size: 14px;
}
.stage__fallback p {
  margin: 4px;
}

.stage__bar {
  position: relative;
  z-index: 3;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 22px;
  pointer-events: none;
}
.stage__bar > * {
  pointer-events: auto;
}
.crumb {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--dim);
}
.crumb b {
  color: var(--c-main);
  font-weight: 500;
  margin-right: 0.6em;
}
.caret {
  animation: blink 1s steps(1) infinite;
}
.stage__ctrl {
  display: flex;
  align-items: center;
  gap: 10px;
}
.stage__ctrl .meta {
  margin-right: 10px;
}
.btn-ghost {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  padding: 8px 13px;
  border: 1px solid var(--line-2);
  color: var(--dim);
  background: color-mix(in srgb, var(--bg-2) 72%, transparent);
  backdrop-filter: blur(6px);
  transition:
    color 0.2s,
    border-color 0.2s,
    background 0.2s;
}
.btn-ghost:hover {
  color: var(--text);
  border-color: var(--dim);
}
.btn-ghost[aria-pressed='true'] {
  color: var(--c-main);
  border-color: color-mix(in srgb, var(--c-main) 50%, transparent);
}

.stage__title {
  position: absolute;
  z-index: 1;
  left: 0;
  right: 0;
  top: 7%;
  display: flex;
  justify-content: space-between;
  pointer-events: none;
  font-family: var(--mono);
  font-weight: 700;
  font-size: clamp(56px, 10.5vw, 188px);
  line-height: 0.9;
  letter-spacing: -0.04em;
  color: transparent;
  -webkit-text-stroke: 1px color-mix(in srgb, var(--text) 16%, transparent);
  opacity: 0;
  transform: translateY(20px);
  transition:
    opacity 1.6s var(--ease) 0.4s,
    transform 1.6s var(--ease) 0.4s;
}
.is-live .stage__title {
  opacity: 1;
  transform: none;
}
.stage__title span:last-child {
  margin-top: 0.62em;
}

/* labels */
.labels {
  position: absolute;
  inset: 0;
  /* Expanded cards use z-index: 2; keep the station tags above them when a
     card opens upward into the stage. */
  z-index: 5;
  pointer-events: none;
  overflow: visible;
}
.label {
  --c: var(--c-main);
  position: absolute;
  left: 0;
  top: 0;
  will-change: transform;
  opacity: 0;
  transition: opacity 0.6s var(--ease);
}
.is-ready .label {
  opacity: 1;
}
.label__dot {
  position: absolute;
  left: -4px;
  top: -4px;
  width: 8px;
  height: 8px;
  background: var(--c);
  box-shadow: 0 0 12px var(--c);
}
.label__dot::after {
  content: '';
  position: absolute;
  inset: -6px;
  border: 1px solid var(--c);
  animation: ping 2.4s var(--ease) infinite;
}
@keyframes ping {
  0% {
    transform: scale(0.4);
    opacity: 1;
  }
  80%,
  100% {
    transform: scale(1.8);
    opacity: 0;
  }
}
.label__stem {
  position: absolute;
  left: 0;
  bottom: 8px;
  width: 1px;
  height: 46px;
  background: linear-gradient(to top, var(--c), transparent);
  transform-origin: bottom;
  transition: height 0.4s var(--ease);
}
.label__tag {
  position: absolute;
  left: 0;
  bottom: 54px;
  padding: 8px 12px 8px 12px;
  border-left: 2px solid var(--c);
  background: color-mix(in srgb, var(--bg-2) 86%, transparent);
  backdrop-filter: blur(8px);
  white-space: nowrap;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  line-height: 1.5;
  pointer-events: auto;
  cursor: pointer;
  transition:
    background 0.3s,
    box-shadow 0.3s;
}
.label__title {
  display: flex;
  align-items: baseline;
  gap: 8px;
  color: var(--text);
  font-family: var(--cn);
  font-size: 14px;
  letter-spacing: 0.02em;
}
.label__title b {
  color: var(--c);
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.1em;
}
.label__code {
  margin-top: 2px;
  color: var(--dim);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.13em;
}
.label__more {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.4s var(--ease);
}
.label__more > div {
  overflow: hidden;
  font-family: var(--cn);
  letter-spacing: 0.02em;
  font-size: 14px;
  color: var(--text);
}
.label__more span {
  display: block;
  padding-top: 6px;
}
.label.is-active .label__more {
  grid-template-rows: 1fr;
}
.label.is-active .label__more > div {
  min-width: max-content;
}
.label.is-active .label__stem {
  height: 64px;
}
.label.is-active .label__tag {
  /* Keep the hit target anchored while its details unfold upward. Moving the
     whole tag on hover makes the pointer leave/re-enter in a tight loop. */
  bottom: 54px;
  background: color-mix(in srgb, var(--c) 14%, var(--bg-2));
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--c) 30%, transparent), 0 10px 40px -10px color-mix(in srgb, var(--c) 50%, transparent);
}
.label.is-flip .label__tag {
  left: auto;
  right: 0;
  border-left: 0;
  border-right: 2px solid var(--c);
  text-align: right;
}
.label.is-flip .label__title { justify-content: flex-end; }

/* speech bubble */
.bubble {
  position: absolute;
  z-index: 3;
  left: 0;
  top: 0;
  pointer-events: none;
  will-change: transform;
}
.bubble > span {
  position: absolute;
  bottom: 14px;
  left: 0;
  transform: translateX(-50%) scale(0.6);
  transform-origin: 50% 100%;
  opacity: 0;
  /* Give short station replies a real line box. Without an explicit width,
     an intrinsic CJK box can collapse to a narrow vertical strip. */
  width: min(300px, calc(100vw - 40px));
  max-width: calc(100vw - 40px);
  white-space: normal;
  overflow-wrap: anywhere;
  text-align: center;
  line-height: 1.55;
  padding: 9px 12px;
  background: #f4efe2;
  color: var(--ink);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  box-shadow:
    0 -3px 0 0 #f4efe2,
    0 3px 0 0 #f4efe2,
    3px 0 0 0 #f4efe2,
    -3px 0 0 0 #f4efe2,
    6px 6px 0 0 rgba(0, 0, 0, 0.35);
  transition:
    transform 0.35s var(--ease-back),
    opacity 0.2s;
}
.bubble > span::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: -10px;
  width: 8px;
  height: 7px;
  margin-left: -4px;
  background: #f4efe2;
  clip-path: polygon(0 0, 100% 0, 50% 100%);
}
.bubble.is-on > span {
  opacity: 1;
  transform: translateX(-50%) scale(1);
}

/* side panels */
.side {
  position: absolute;
  z-index: 2;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--dim);
  pointer-events: none;
  opacity: 0;
  transition: opacity 1s var(--ease) 0.6s;
}
.is-live .side {
  opacity: 1;
}
.side--l {
  left: 0;
}
.side--r {
  right: 0;
  text-align: right;
}
.side__k {
  color: var(--faint);
  margin-bottom: 14px;
}
.side__v {
  color: var(--text);
  line-height: 1.9;
}
.side__v span {
  color: var(--dim);
}
.side__rule {
  width: 1px;
  height: 56px;
  margin: 20px 0;
  background: linear-gradient(var(--c-main), transparent);
}
.telemetry {
  margin: 0;
  display: grid;
  gap: 6px;
}
.side--r .telemetry {
  margin: 0 0 26px;
}
.telemetry div {
  display: flex;
  justify-content: flex-end;
  gap: 14px;
}
.telemetry dt {
  color: var(--faint);
}
.telemetry dd {
  min-width: 4.5em;
}
.telemetry dd {
  margin: 0;
  color: var(--c-main);
  font-variant-numeric: tabular-nums;
}
.side__coords {
  margin: 26px 0;
  color: var(--faint);
  line-height: 1.9;
}
.side__slogan {
  color: var(--dim);
  line-height: 1.9;
}

.cross {
  position: absolute;
  z-index: 2;
  width: 13px;
  height: 13px;
  pointer-events: none;
}
.cross::before,
.cross::after {
  content: '';
  position: absolute;
  background: var(--faint);
}
.cross::before {
  left: 6px;
  top: 0;
  width: 1px;
  height: 13px;
}
.cross::after {
  top: 6px;
  left: 0;
  height: 1px;
  width: 13px;
}
.cross--tl {
  left: -6px;
  /* Keep the marker clear of the route notice (01 / Welcome...). */
  top: 104px;
}
.cross--tr {
  right: -6px;
  top: 72px;
}
.cross--bl {
  left: -6px;
  bottom: 62px;
  /* The lower-left marker adds visual noise beside the copy. */
  display: none;
}
.cross--br {
  right: -6px;
  bottom: 62px;
}

.stage__foot {
  /* The terminal output has moved into the lede. Keep this form in the DOM
     as a keyboard target without reserving space or drawing a second line. */
  position: fixed;
  left: -10000px;
  top: -10000px;
  width: 1px;
  height: 1px;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
}
.term {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  flex: 1;
  max-width: 720px;
  cursor: text;
}
.term__prompt {
  color: var(--c-main);
  cursor: text;
}
.term__line {
  min-width: 0;
  max-width: min(330px, 72vw);
  white-space: pre-line;
  text-align: left;
  line-height: 1.55;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--text);
  font-family: var(--cn);
  letter-spacing: 0.02em;
}
.term__line #term-out {
  font-family: var(--mono), var(--cn);
}
.term__cursor {
  display: inline-block;
  width: 8px;
  height: 15px;
  margin-left: 4px;
  vertical-align: -2px;
  background: var(--c-main);
  animation: blink 1s steps(1) infinite;
}
.term__input {
  position: absolute;
  inset: 0;
  opacity: 0;
  width: 100%;
  font: inherit;
  border: 0;
  background: transparent;
  color: transparent;
  cursor: text;
}
.term.is-typing .term__line {
  color: var(--c-main);
}
.stage__hint {
  color: var(--faint);
  font-size: 11px;
  letter-spacing: 0.12em;
  white-space: nowrap;
}
.stage__hint kbd {
  font-size: 10px;
  color: var(--dim);
}

/* ───────────────────────── intro ───────────────────────── */
.intro {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  padding: 26px 0 30px;
  border-bottom: 1px solid var(--line);
  /* Keep the copy/CTA anchor stable while an entrance card reveals its
     secondary actions. The card may grow in its own grid row, but must not
     make this section re-measure on every pointer move. */
  contain: layout;
}
.intro__title {
  margin: 0;
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0 14px;
  font-size: clamp(48px, 6vw, 88px);
  line-height: 1;
  font-weight: 800;
  letter-spacing: -0.01em;
}
.intro__head {
  display: contents;
}
.intro__cn {
  background: linear-gradient(180deg, var(--text) 30%, var(--dim));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.intro__title em {
  font-style: normal;
  font-family: var(--mono);
  font-weight: 700;
  color: var(--c-main);
  text-shadow: 0 0 40px rgba(255, 194, 75, 0.35);
}
.intro__title .intro__head {
  white-space: nowrap;
}
.intro__tag {
  font-size: clamp(18px, 1.7vw, 24px);
  font-weight: 600;
  line-height: 1.45;
  letter-spacing: 0.06em;
  color: var(--text);
  margin-left: 8px;
}
.intro__lede {
  margin: 14px 0 0;
  color: var(--dim);
  font-size: 15px;
  letter-spacing: 0.03em;
  /* Keep the layout steady as the rotating message changes. */
  min-height: 48px;
  height: 48px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  overflow: hidden;
  white-space: nowrap;
}
.intro__lede .term__prompt {
  display: inline-block;
  margin-right: 0;
  flex: none;
  line-height: 24px;
  color: var(--c-main);
  font-family: var(--mono);
}
.intro__lede .term__line {
  display: block;
  min-width: 0;
  max-width: none;
  overflow: visible;
  text-overflow: clip;
  white-space: normal;
  font-size: inherit;
  letter-spacing: .03em;
  color: inherit;
  font-family: inherit;
  line-height: 24px;
}
.intro__lede .term__line #term-out {
  font-family: inherit;
}
.intro__lede .term__cursor {
  height: 1em;
  margin-left: 5px;
  vertical-align: -0.14em;
}
.intro__copy > * {
  opacity: 0;
  transform: translateY(16px);
  transition:
    opacity 0.9s var(--ease),
    transform 0.9s var(--ease);
}
.is-live .intro__copy > * {
  opacity: 1;
  transform: none;
}
.is-live .intro__copy > :nth-child(2) {
  transition-delay: 0.12s;
}

.cta {
  position: relative;
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  width: 360px;
  max-width: 100%;
  height: 88px;
  min-height: 88px;
  max-height: 88px;
  padding: 20px 24px;
  /* The anchor remains the stable pointer target. Its visual plate lives in
     ::after so the plate can float on hover without making the hit area
     chase the pointer at its edges. */
  background: transparent;
  color: var(--on-accent);
  box-shadow: none;
  isolation: isolate;
  transition:
    filter 0.18s var(--ease),
    box-shadow 0.18s var(--ease);
  overflow: visible;
  opacity: 0;
  translate: 0 16px;
}
.is-live .cta {
  opacity: 1;
  translate: 0 0;
  transition:
    filter 0.18s var(--ease),
    box-shadow 0.18s var(--ease),
    opacity 0.9s var(--ease) 0.2s,
    translate 0.9s var(--ease) 0.2s;
}
.cta::before {
  content: '';
  position: absolute;
  /* Lower plate: it sits a few pixels down and to the right at rest. Keep
     it separate from the upper plate so the two layers can travel at
     different speeds on hover, like the reference button. */
  inset: 8px -8px -8px 8px;
  z-index: 0;
  pointer-events: none;
  background: color-mix(in srgb, var(--c-main) 65%, #725012);
  transform: translate3d(0, 0, 0);
  transition: transform 0.36s var(--ease-back);
}

.cta::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    linear-gradient(100deg, transparent 30%, rgba(255, 255, 255, 0.55) 48%, transparent 66%) -110% 0 / 220% 100% no-repeat,
    var(--c-main);
  box-shadow:
    0 0 60px -10px rgba(255, 194, 75, 0.5);
  transition:
    transform 0.36s var(--ease-back),
    background-position 0.7s var(--ease),
    box-shadow 0.36s var(--ease-back),
    filter 0.18s var(--ease);
}
.cta:hover::before,
.cta:focus-visible::before {
  /* The lower plate only lifts, while the upper plate also moves right. */
  transform: translate3d(0, -4px, 0);
}
.cta:hover::after,
.cta:focus-visible::after {
  transform: translate3d(5px, -8px, 0);
  background-position: 110% 0, 0 0;
  box-shadow:
    0 0 68px -8px rgba(255, 194, 75, 0.58);
}
.cta:hover {
  /* Keep the hit box fixed while the visual plate above gives the control
     the lively lift it had before. */
  filter: brightness(1.06);
}
.cta:not([href]) {
  cursor: pointer;
}
.cta:active {
  filter: brightness(0.96);
}
.cta:active::after {
  transform: translate3d(1px, 1px, 0);
}
.cta:active::before {
  transform: translate3d(0, 0, 0);
}
.cta__label {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
  transition: transform 0.36s var(--ease-back);
}
.cta:hover .cta__label,
.cta:focus-visible .cta__label {
  transform: translate3d(5px, -8px, 0);
}
.cta__en {
  font-family: var(--mono);
  font-weight: 800;
  font-size: 19px;
  letter-spacing: 0.08em;
}
.cta__cn {
  font-size: 13px;
  font-weight: 600;
  opacity: 0.72;
  letter-spacing: 0.1em;
  white-space: nowrap;
}
.cta__arrow {
  position: relative;
  z-index: 2;
  width: 28px;
  height: 28px;
  transition: transform 0.36s var(--ease-back);
}
.cta:hover .cta__arrow,
.cta:focus-visible .cta__arrow {
  transform: translate3d(10px, -6px, 0);
}

/* ───────────────────────── node cards ───────────────────────── */
@property --node-border-angle {
  syntax: '<angle>';
  initial-value: 0deg;
  inherits: false;
}
@keyframes node-border-flow {
  to {
    --node-border-angle: 360deg;
  }
}
.nodes {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  align-items: stretch;
  margin-top: 22px;
  border: 1px solid var(--line);
  background: var(--line);
  gap: 1px;
}
.node-slot {
  position: relative;
  /* Keep the slot as the stable drawer track. The card itself grows upward
     when its secondary row opens, so the lower edge never moves. */
  display: block;
  min-width: 0;
  min-height: 100%;
}
.node {
  --c: var(--c-main);
  --node-lift: 0px;
  --drawer-rise: 150px;
  --details-height: 179px;
  position: relative;
  margin-top: 0;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  grid-template-rows: auto auto;
  gap: 4px 18px;
  align-items: start;
  padding: 22px 24px 22px 24px;
  background: var(--bg);
  text-align: left;
  overflow: hidden;
  isolation: isolate;
  transition:
    background 0.35s var(--ease),
    translate 0.32s var(--ease),
    margin-top 0.34s var(--ease),
    box-shadow 0.32s var(--ease);
  opacity: 0;
  transform: translateY(20px);
  translate: 0 var(--node-lift);
  width: 100%;
}
.is-live .node {
  opacity: 1;
  transform: none;
  transition:
    background 0.35s var(--ease),
    translate 0.32s var(--ease),
    margin-top 0.34s var(--ease),
    box-shadow 0.32s var(--ease),
    opacity 0.8s var(--ease) calc(0.3s + var(--i) * 0.08s),
    transform 0.8s var(--ease) calc(0.3s + var(--i) * 0.08s);
}
.node::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  padding: 1.5px;
  border-radius: inherit;
  pointer-events: none;
  /* The mask leaves only a thin perimeter, including while the drawer
     grows. Two soft highlights travel around each entrance independently. */
  background: conic-gradient(
    from var(--node-border-angle),
    color-mix(in srgb, var(--c) 22%, transparent) 0deg 40deg,
    var(--c) 85deg,
    color-mix(in srgb, var(--c) 55%, white) 100deg,
    var(--c) 115deg,
    color-mix(in srgb, var(--c) 22%, transparent) 160deg 220deg,
    var(--c) 265deg,
    color-mix(in srgb, var(--c) 55%, white) 280deg,
    var(--c) 295deg,
    color-mix(in srgb, var(--c) 22%, transparent) 340deg 360deg
  );
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  opacity: 0.82;
  animation: node-border-flow 6s linear infinite;
  animation-delay: calc(var(--i) * -2s);
  transition: opacity 0.3s var(--ease);
}
.node::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(420px 160px at 0% 0%, color-mix(in srgb, var(--c) 16%, transparent), transparent 70%),
    repeating-linear-gradient(180deg, color-mix(in srgb, var(--c) 5%, transparent) 0 1px, transparent 1px 4px);
  opacity: 0;
  transition: opacity 0.4s var(--ease);
}
.node:hover::before,
.node.is-active::before,
.node.is-selected::before,
.node:focus-visible::before {
  opacity: 1;
}
.node:hover::after,
.node.is-active::after,
.node.is-selected::after,
.node:focus-visible::after {
  opacity: 1;
}
.node:hover,
.node.is-active,
.node.is-selected {
  /* Open like a drawer: the extra row is paid for with a negative top
     margin, keeping the bottom edge anchored to the slot. */
  --node-lift: 0px;
  margin-top: calc(-1 * var(--drawer-rise));
  background: var(--bg-2);
  z-index: 2;
  box-shadow: 0 16px 30px -24px color-mix(in srgb, var(--c) 72%, transparent);
}
.node:focus-visible {
  outline-offset: -2px;
  outline-color: var(--c);
}
.node__idx {
  grid-row: span 2;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--faint);
  padding-top: 3px;
  transition: color 0.3s;
}
.node:hover .node__idx,
.node.is-active .node__idx {
  color: var(--c);
}
.node__head {
  display: flex;
  align-items: center;
  gap: 0;
  grid-column: 2;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--text);
}
.node__head i {
  width: 6px;
  height: 6px;
  flex: 0 0 6px;
  /* The status light belongs beside the title, as in the reference card,
     instead of being pushed to the far side of the heading column. */
  margin-left: 18px;
  background: var(--c);
  box-shadow: 0 0 10px var(--c);
}
.node__body {
  grid-column: 2;
  grid-row: 2;
}
.node__title {
  display: block;
  margin: 0;
}
.node__code {
  display: block;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--dim);
  line-height: 1.4;
}
.node__desc {
  display: block;
  margin-top: 5px;
  max-width: 32em;
  color: var(--faint);
  font-size: 11px;
  line-height: 1.55;
  letter-spacing: 0.01em;
  height: 34px;
  max-height: 34px;
  overflow: hidden;
  transition: max-height .34s var(--ease), margin-top .34s var(--ease), opacity .22s;
}
/* Secondary entrances live in a real grid row so the card can grow without
   covering its copy or stealing the hit area from a neighbouring card. */
.node__reveal {
  grid-column: 1 / 4;
  grid-row: 3;
  display: block;
  width: 100%;
  max-height: 0;
  margin-top: 0;
  overflow: hidden;
  opacity: 0;
  transform: translateY(8px);
  pointer-events: none;
  transition:
    max-height 0.34s var(--ease),
    margin-top 0.34s var(--ease),
    opacity 0.22s ease,
    transform 0.34s var(--ease);
}
.node__details { display: block; }
.node__comparison { display: grid; gap: 8px; padding: 12px 0; border-top: 1px solid var(--line-2); }
.node__comparison-row { display: grid; grid-template-columns: 34px minmax(0, 1fr); align-items: start; gap: 10px; color: var(--dim); font: 12px/1.7 var(--cn); letter-spacing: .01em; }
.node__comparison-label { padding: 1px 0; border-radius: 4px; background: color-mix(in srgb, var(--c) 9%, var(--bg)); color: var(--text); font-size: 11px; font-weight: 650; text-align: center; }
.node__comparison-row:last-child > span:last-child { color: var(--text); }
.node__entrances { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin-top: 4px; }
.node__reveal-btn {
  display: flex;
  align-items: center;
  min-width: 0;
  min-height: 46px;
  padding: 9px 12px;
  border: 1px solid color-mix(in srgb, var(--c) 55%, #253440);
  border-left: 3px solid var(--c);
  border-radius: 6px;
  background: #253440;
  color: #fff;
  box-shadow: 0 3px 8px #10212e1a;
  font-family: var(--cn);
  font-size: 13px;
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: 0.08em;
  white-space: nowrap;
  transition:
    background 0.25s var(--ease),
    border-color 0.25s var(--ease),
    color 0.25s var(--ease),
    transform 0.25s var(--ease);
}
.node__reveal-btn::after {
  content: '↗';
  margin-left: auto;
  padding-left: 8px;
  font-size: 15px;
  line-height: 1;
  color: color-mix(in srgb, var(--c) 70%, white);
}
.node__reveal-btn:hover {
  background: #354c5a;
  border-color: var(--c);
  color: #fff;
  transform: translateY(-1px);
}
html[data-theme='dark'] .node__reveal-btn { background: #2d4350; border-color: color-mix(in srgb, var(--c) 70%, #2d4350); }
html[data-theme='dark'] .node__reveal-btn:hover { background: #3c5968; }
.node:hover .node__reveal,
.node.is-active .node__reveal,
.node.is-selected .node__reveal,
.node:focus-visible .node__reveal {
  max-height: var(--details-height);
  margin-top: 10px;
  opacity: 1;
  transform: none;
  pointer-events: auto;
}
.node:is(:hover, .is-active, .is-selected, :focus-visible) .node__desc { max-height: 0; margin-top: 0; opacity: 0; }
@media (max-width: 860px) {
  /* Stacked cards open within the page, clear of the preceding entrance. */
  .node:is(:hover, .is-active, .is-selected) { margin-top: 0; }
}
.node__arrow {
  grid-column: 3;
  /* Park the action control in the upper-right corner. The copy below it
     can now breathe while KEY remains independently anchored at the bottom. */
  grid-row: 1;
  align-self: start;
  width: 42px;
  height: 42px;
  margin-top: -2px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-2);
  color: var(--c);
  transition:
    background 0.3s var(--ease),
    color 0.3s,
    border-color 0.3s,
    transform 0.3s var(--ease);
}
.node__arrow svg {
  width: 16px;
  height: 16px;
  transition: transform 0.35s var(--ease);
}
.node:hover .node__arrow,
.node.is-active .node__arrow {
  background: var(--c);
  border-color: var(--c);
  color: var(--on-accent);
}
.node:hover .node__arrow svg,
.node.is-active .node__arrow svg {
  transform: translate(2px, -2px);
}
.node__key {
  position: absolute;
  right: 10px;
  bottom: 8px;
  font-family: var(--pixel);
  font-size: 9px;
  letter-spacing: 0.1em;
  color: var(--faint);
  opacity: 0.8;
}

/* ───────────────────────── statusbar & footer ───────────────────────── */
.statusbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 16px 0;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--dim);
}
.statusbar__items {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 26px;
}
.statusbar__items span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.statusbar__items i {
  width: 5px;
  height: 5px;
  background: var(--c);
}
.foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  padding: 20px 0 26px;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--faint);
}
.foot__keys kbd {
  font-size: 10px;
}
.foot__motto {
  color: var(--dim);
}

/* ───────────────────────── chat drawer ───────────────────────── */
.chat {
  --c: var(--c-support);
  position: fixed;
  z-index: 60;
  right: 24px;
  bottom: 24px;
  width: min(390px, calc(100vw - 32px));
  height: min(580px, calc(100svh - 48px));
  display: flex;
  flex-direction: column;
  background: color-mix(in srgb, var(--bg-2) 91%, transparent);
  backdrop-filter: blur(18px) saturate(1.2);
  border: 1px solid color-mix(in srgb, var(--c) 30%, transparent);
  box-shadow:
    8px 8px 0 0 rgba(94, 230, 208, 0.12),
    0 30px 80px -20px var(--shadow);
  transform: translateY(24px) scale(0.97);
  transform-origin: bottom right;
  opacity: 0;
  visibility: hidden;
  transition:
    transform 0.4s var(--ease),
    opacity 0.3s var(--ease),
    visibility 0.4s;
}
.chat.is-open {
  transform: none;
  opacity: 1;
  visibility: visible;
}
.chat__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 14px 14px 16px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(90deg, color-mix(in srgb, var(--c) 10%, transparent), transparent);
}
.chat__who {
  display: flex;
  gap: 12px;
  align-items: center;
}
.chat__avatar {
  position: relative;
  width: 38px;
  height: 34px;
  background: #e9e5da;
  box-shadow: inset 0 -4px 0 #c9c4b6;
}
.chat__avatar::before {
  content: '';
  position: absolute;
  left: 5px;
  right: 5px;
  top: 7px;
  height: 15px;
  background: #1b2029;
}
.chat__avatar i {
  position: absolute;
  top: 11px;
  width: 6px;
  height: 7px;
  background: var(--c-main);
  box-shadow: 0 0 6px var(--c-main);
  animation: eyeBlink 4s steps(1) infinite;
}
.chat__avatar i:first-child {
  left: 10px;
}
.chat__avatar i:last-child {
  right: 10px;
}
@keyframes eyeBlink {
  96% {
    height: 1px;
    top: 14px;
  }
}
.chat__name {
  font-weight: 700;
  font-size: 14px;
}
.chat__status {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--c);
  display: flex;
  align-items: center;
  gap: 6px;
}
.chat__status i {
  width: 5px;
  height: 5px;
  background: currentColor;
  animation: blink 1.4s steps(1) infinite;
}
.chat__log {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  scrollbar-width: thin;
  scrollbar-color: var(--line-2) transparent;
}
.msg {
  max-width: 84%;
  padding: 9px 12px;
  font-size: 14px;
  line-height: 1.55;
  animation: msgIn 0.35s var(--ease-back);
}
@keyframes msgIn {
  from {
    opacity: 0;
    transform: translateY(8px) scale(0.96);
  }
}
.msg--bot {
  align-self: flex-start;
  background: color-mix(in srgb, var(--text) 6%, transparent);
  border-left: 2px solid var(--c);
}
.msg--me {
  align-self: flex-end;
  background: var(--c);
  color: var(--on-accent);
  font-weight: 500;
}
.msg__action {
  margin-top: 8px;
  padding: 5px 10px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
  background: var(--c);
  color: var(--ink);
  box-shadow: 3px 3px 0 color-mix(in srgb, var(--c) 35%, #000);
  transition: transform 0.15s, box-shadow 0.15s;
}
.msg__action:hover {
  transform: translate(-1px, -1px);
  box-shadow: 4px 4px 0 color-mix(in srgb, var(--c) 35%, #000);
}
.msg__action:active {
  transform: translate(2px, 2px);
  box-shadow: 1px 1px 0 color-mix(in srgb, var(--c) 35%, #000);
}
.msg--sys {
  align-self: center;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  color: var(--faint);
  padding: 2px;
}
.msg--typing {
  display: inline-flex;
  gap: 4px;
}
.msg--typing i {
  width: 5px;
  height: 5px;
  background: var(--c);
  animation: dots 1s infinite;
}
.msg--typing i:nth-child(2) {
  animation-delay: 0.15s;
}
.msg--typing i:nth-child(3) {
  animation-delay: 0.3s;
}
@keyframes dots {
  50% {
    opacity: 0.2;
    transform: translateY(-3px);
  }
}
.chat__quick {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 0 16px 12px;
}
.chat__quick button {
  font-size: 12px;
  padding: 6px 10px;
  border: 1px solid color-mix(in srgb, var(--c) 35%, transparent);
  color: var(--c);
  transition: background 0.2s;
}
.chat__quick button:hover {
  background: color-mix(in srgb, var(--c) 14%, transparent);
}
.chat__form {
  display: flex;
  border-top: 1px solid var(--line);
}
.chat__form input {
  flex: 1;
  min-width: 0;
  padding: 14px 16px;
  background: transparent;
  border: 0;
  color: var(--text);
  font: inherit;
  font-size: 14px;
}
.chat__form input:focus {
  outline: none;
}
.chat__form button {
  width: 52px;
  display: grid;
  place-items: center;
  color: var(--c);
  border-left: 1px solid var(--line);
}
.chat__form button svg {
  width: 18px;
  height: 18px;
}

/* ───────────────────────── fx overlays ───────────────────────── */
.warp {
  position: fixed;
  inset: 0;
  z-index: 80;
  pointer-events: none;
  opacity: 0;
  background: radial-gradient(circle at 50% 50%, #fff6df 0%, var(--wc, var(--c-main)) 30%, color-mix(in srgb, var(--bg) 0%, transparent) 70%);
  mix-blend-mode: screen;
}
.warp.is-on {
  animation: warp 1.5s var(--ease) forwards;
}
@keyframes warp {
  0% {
    opacity: 0;
    transform: scale(0.2);
  }
  55% {
    opacity: 1;
    transform: scale(1.6);
  }
  100% {
    opacity: 0;
    transform: scale(2.4);
  }
}
.toast {
  position: fixed;
  z-index: 85;
  left: 50%;
  bottom: 28px;
  transform: translate(-50%, 20px);
  padding: 10px 16px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  background: color-mix(in srgb, var(--bg-2) 94%, transparent);
  border: 1px solid var(--line-2);
  color: var(--text);
  opacity: 0;
  transition:
    opacity 0.3s,
    transform 0.3s var(--ease);
  pointer-events: none;
}
.toast.is-on {
  opacity: 1;
  transform: translate(-50%, 0);
}
.grain {
  position: fixed;
  inset: -50%;
  z-index: 70;
  pointer-events: none;
  opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  animation: grain 1.2s steps(4) infinite;
}
@keyframes grain {
  25% {
    transform: translate(-3%, 2%);
  }
  50% {
    transform: translate(2%, -3%);
  }
  75% {
    transform: translate(-1%, 3%);
  }
}
.noscript {
  position: fixed;
  inset: 0;
  z-index: 99;
  display: grid;
  place-content: center;
  text-align: center;
  background: var(--bg);
  font-size: 16px;
}
.noscript a {
  color: var(--c-main);
}

/* ───────────────────────── desktop hero: copy over the scene ───────────────────────── */
@media (min-width: 1181px) {
  .app > main {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: auto auto auto;
    /* Expanded cards must not redistribute free space into the stage row. */
    align-content: start;
  }
  .stage {
    /* Give the scene more breathing room beside the left copy. */
    /* Preview baseline: --shift 0.17, --fit 1. */
    --shift: 0.13;
    --lift: 0;
    --fit: 0.96;
    grid-area: 1 / 1;
    height: clamp(560px, calc(100svh - 76px - 176px), 900px);
  }
  .stage::before {
    content: '';
    position: absolute;
    z-index: 1;
    left: calc(50% - 50vw);
    top: 0;
    bottom: 0;
    width: calc(50vw - 4%);
    pointer-events: none;
    background: radial-gradient(90% 70% at 0% 78%, color-mix(in srgb, var(--bg) 82%, transparent), color-mix(in srgb, var(--bg) 40%, transparent) 50%, transparent 78%);
  }
  .intro {
    --intro-copy-offset: 20px;
    grid-area: 1 / 1;
    align-self: end;
    justify-self: start;
    flex-direction: column;
    align-items: flex-start;
    gap: 30px;
    width: min(560px, 42%);
    max-width: none;
    margin-bottom: 148px;
    padding: 0;
    border: 0;
    z-index: 4;
  }
  .intro__title {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
  .intro__copy {
    width: 100%;
    min-width: 0;
    transform: translateY(var(--intro-copy-offset));
  }
  .intro__head {
    display: flex;
    align-items: baseline;
    gap: 16px;
  }
  .intro__tag {
    margin-left: 0;
  }
  .intro__lede {
    max-width: min(100%, var(--intro-lede-width, 100%));
  }
  .stage__title {
    display: none;
  }
  .nodes {
    margin-top: 16px;
  }
}

@media (max-width: 1180px) {
  .stage__notice {
    left: 0;
    top: 9%;
    max-width: calc(100% - 24px);
    font-size: 14px;
  }
}

/* ───────────────────────── responsive ───────────────────────── */
@media (max-width: 1180px) {
  .side {
    display: none;
  }
  .top__ticker {
    visibility: hidden;
  }
  .node {
    padding: 20px 18px;
    gap: 4px 12px;
  }
  .node__desc {
    display: block;
  }
}

@media (max-width: 860px) {
  .intro {
    flex-direction: column;
    align-items: stretch;
  }
  .cta {
    width: 100%;
  }
  .nodes {
    grid-template-columns: 1fr;
  }
  .node__desc {
    display: block;
  }
  .foot__keys {
    display: none;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 14px;
  }
  .hide-sm {
    display: none !important;
  }
  .top {
    height: 64px;
    gap: 12px;
    grid-template-columns: auto 1fr auto;
  }
  .top__ticker {
    display: none;
  }
  .top__meta {
    grid-column: 3;
    gap: 10px;
  }
  .top__meta .meta__k {
    display: none;
  }
  .pill--live {
    display: none;
  }
  .brand__cn {
    display: none;
  }
  .brand__name {
    font-size: 16px;
  }
  .mark {
    width: 26px;
    height: 26px;
  }
  .stage {
    --shift: 0.05;
    --lift: 0.03;
    --fit: 1;
    height: min(118vw, 520px);
    min-height: 400px;
  }
  .stage__bar {
    padding-top: 14px;
  }
  .crumb {
    font-size: 10px;
    letter-spacing: 0.1em;
  }
  .btn-ghost {
    padding: 6px 9px;
    font-size: 10px;
  }
  .stage__title {
    top: 12%;
    font-size: 19vw;
  }
  .stage__notice {
    top: 7%;
    gap: 9px;
    padding-right: 8px;
    font-size: 12px;
  }
  .stage__notice-mark {
    font-size: inherit;
  }
  .stage__notice-caret {
    width: auto;
    height: auto;
    background: none;
  }
  .cross--tl,
  .cross--tr {
    top: 52px;
  }
  .cross--tl {
    /* Leave a little extra breathing room below the route notice on phones. */
    top: 82px;
  }
  .label__tag {
    padding: 4px 8px;
    font-size: 10px;
    bottom: 34px;
  }
  /* compact tags: index only, the name unfolds when active */
  .label__name,
  .label__code {
    display: none;
  }
  .label__title b {
    margin-right: 0;
  }
  .label__stem {
    height: 28px;
  }
  .label.is-active .label__stem {
    height: 36px;
  }
  .label.is-active .label__tag {
    /* Keep the compact tag's pointer target anchored while details unfold. */
    bottom: 34px;
  }
  .label__more > div {
    font-size: 12px;
  }
  .stage__foot {
    /* Keep the off-canvas command form hidden on narrow screens too. */
    display: none;
  }
  .intro {
    padding: 14px 0 22px;
  }
  .intro__title {
    font-size: 52px;
  }
  .intro__tag {
    flex-basis: 100%;
    margin: 10px 0 0;
    font-size: 18px;
  }
  .intro__lede {
    font-size: 13px;
    max-width: 100%;
    height: 41.6px;
    min-height: 41.6px;
    white-space: nowrap;
  }
  .intro__lede .term__line {
    line-height: 20.8px;
  }
  .cta {
    padding: 16px 20px;
  }
  .node {
    padding: 18px 16px;
  }
  .node__title {
    font-size: 17px;
  }
  .node__key {
    display: none;
  }
  .statusbar {
    flex-direction: column;
    align-items: flex-start;
  }
  .foot {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }
  .chat {
    right: 8px;
    left: 8px;
    bottom: 8px;
    width: auto;
    height: min(72svh, 560px);
  }
}

@media (max-width: 360px) {
  /* Give the sentence the full width without reducing its font size. */
  .intro__lede {
    gap: 0;
  }
  .intro__lede .term__prompt,
  .intro__lede .term__cursor {
    display: none;
  }
  .intro__lede .term__line {
    letter-spacing: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .node::before {
    animation: none !important;
    background: var(--c);
    opacity: 0.55;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .ticker {
    animation: none;
  }
}

/* Document-head styles: the guide is ready before the first page paint. */
:root {
  --speech-bg: #fffdf7;
  --speech-text: #25333b;
  --speech-dim: #65716f;
  --speech-line: #e5e4d9;
  --speech-shadow: #24463c12;
  --speech-button: #215d51;
  --speech-button-hover: #174d42;
  --speech-button-text: #ffffff;
}
html[data-theme='dark'] {
  --speech-bg: #171f25;
  --speech-text: #eeeef0;
  --speech-dim: #a9b9bc;
  --speech-line: #344248;
  --speech-shadow: #0000004a;
  --speech-button: #a6e3cf;
  --speech-button-hover: #c4f4e3;
  --speech-button-text: #183b31;
}
.onboarding[hidden], .onboarding [hidden] { display: none !important; }
.onboarding {
  --guide-accent: var(--c-support);
  position: absolute;
  z-index: 8;
  display: flex;
  flex-direction: column;
  top: var(--speech-top, 49%);
  left: var(--speech-left, 26.5%);
  width: var(--speech-width, min(380px, 100%));
  max-height: var(--speech-max-height, 260px);
  padding: 15px 17px;
  background: linear-gradient(145deg, color-mix(in srgb, var(--guide-accent) 4%, var(--speech-bg)), var(--speech-bg) 48%);
  color: var(--speech-text);
  border: 1px solid var(--speech-line);
  border-radius: 16px 5px 16px 16px;
  box-shadow: 0 8px 24px var(--speech-shadow), 0 2px 6px var(--speech-shadow);
  isolation: isolate;
}
.onboarding::after {
  content: '';
  position: absolute;
  left: calc(100% - 1px);
  top: 22px;
  width: 16px;
  height: 20px;
  background: var(--speech-bg);
  clip-path: polygon(0 25%, 100% 0, 0 100%);
}
.onboarding__speaker { display: flex; flex: none; align-items: center; gap: 10px; min-height: 22px; margin-bottom: 8px; color: var(--speech-dim); }
.onboarding__body { min-height: 0; overflow-y: auto; overscroll-behavior: contain; scrollbar-width: thin; scrollbar-color: var(--speech-line) transparent; }
.speech-name { display: flex; align-items: center; gap: 7px; color: var(--speech-text); font: 650 13px/1.5 var(--cn); }
.speech-name > i { width: 6px; height: 6px; border-radius: 50%; background: var(--guide-accent); box-shadow: 0 0 0 4px color-mix(in srgb, var(--guide-accent) 9%, transparent); }
.speech-scroll { margin-left: auto; color: var(--speech-dim); font: 10px/1.5 var(--cn); }
#guide-progress { margin-left: auto; padding: 3px 8px; border-radius: 20px; background: color-mix(in srgb, var(--guide-accent) 8%, var(--speech-bg)); color: var(--speech-text); font: 11px/1.5 var(--mono); }
#guide-progress:empty { display: none; }
.guide-close { display: grid; place-items: center; width: 30px; height: 30px; flex: none; margin: -3px -6px -3px auto; padding: 0; border: 0; border-radius: 50%; background: transparent; color: var(--speech-dim); font: 20px/1 var(--cn); cursor: pointer; transition: background .18s, color .18s; }
#guide-progress:not(:empty) + .guide-close { margin-left: 0; }
.guide-close:hover { background: color-mix(in srgb, var(--speech-text) 6%, transparent); color: var(--speech-text); }
.onboarding h2 { margin: 0 0 6px; font: 650 16px/1.5 var(--cn); letter-spacing: -.02em; }
.onboarding__copy { font: 13px/1.75 var(--cn); color: var(--speech-dim); }
.onboarding__copy p { margin: 0; }
.onboarding__copy p + p { margin-top: 6px; }
.onboarding__actions { display: flex; flex: none; align-items: center; flex-wrap: wrap; gap: 8px; padding-top: 10px; margin-top: 10px; border-top: 1px solid var(--speech-line); }
.onboarding[data-view='invite'] .onboarding__actions { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); border-top: 0; margin-top: 12px; padding-top: 0; }
.onboarding[data-view='goodbye'] .onboarding__actions { display: none; }
.onboarding[data-view='step'] #guide-next { margin-left: auto; }
.guide-button { display: inline-flex; align-items: center; justify-content: center; gap: 9px; min-height: 36px; min-width: 0; padding: 8px 10px; border: 1px solid var(--speech-line); border-radius: 8px; background: transparent; color: var(--speech-text); font: 500 12px/1.5 var(--cn); text-align: center; cursor: pointer; transition: background .18s, border-color .18s, box-shadow .18s; }
.guide-button:hover { background: color-mix(in srgb, var(--speech-text) 4%, var(--speech-bg)); border-color: color-mix(in srgb, var(--speech-dim) 50%, var(--speech-line)); }
.guide-button--primary { background: var(--speech-button); color: var(--speech-button-text); border-color: transparent; box-shadow: 0 3px 9px color-mix(in srgb, var(--speech-button) 14%, transparent); }
.guide-button--primary:hover { background: var(--speech-button-hover); border-color: transparent; box-shadow: 0 4px 14px color-mix(in srgb, var(--speech-button) 22%, transparent); }
.guide-button__content { min-width: 0; display: flex; flex-direction: column; gap: 5px; }
.guide-button strong { font-size: 12px; font-weight: 600; }
.guide-button small { color: var(--speech-dim); font: 11px/1.5 var(--cn); }
.guide-button--primary small { color: inherit; opacity: .78; }
.guide-button__arrow { flex: none; font: 18px/1 var(--cn); transition: transform .18s; }
.guide-button:hover .guide-button__arrow { transform: translateX(2px); }
.guide-text-button { min-height: 36px; padding: 8px 3px; margin-left: auto; border: 0; background: transparent; color: var(--speech-dim); font: 12px/1.5 var(--cn); cursor: pointer; }
.guide-text-button:hover { color: var(--speech-text); text-decoration: underline; text-underline-offset: 4px; }
.guide-choices { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 6px; margin-top: 10px; }
.guide-choice { display: flex; align-items: center; justify-content: center; gap: 5px; min-height: 40px; width: 100%; padding: 6px 4px; border: 1px solid var(--speech-line); border-radius: 8px; background: transparent; color: var(--speech-text); text-align: center; cursor: pointer; transition: border-color .18s, background .18s; }
.guide-choice:hover { background: color-mix(in srgb, var(--choice-color) 5%, var(--speech-bg)); border-color: var(--choice-color); }
.guide-choice__index { width: 5px; height: 5px; border-radius: 50%; background: var(--choice-color); font-size: 0; flex: none; }
.guide-choice strong { display: block; font: 600 12px/1.6 var(--cn); }
.guide-choice__arrow { display: none; }
.onboarding[data-view='summary'] .onboarding__body { flex-shrink: 0; }
.onboarding[data-view='summary'] .onboarding__actions { margin-top: 8px; padding-top: 0; border-top: 0; }
.onboarding[data-view='summary'] #guide-restart { margin-left: 0; }
.onboarding[data-view='summary'] #guide-next { margin-left: auto; }
.guide-launcher { display: inline-flex; align-items: center; justify-content: flex-start; gap: 10px; max-width: 100%; min-height: 36px; padding: 5px 0; border: 0; background: transparent; color: var(--dim); font: 12px/1.6 var(--cn); text-align: left; cursor: pointer; }
.guide-launcher:hover { color: var(--text); }
.cta { text-align: left; }
.cta__en { font-family: var(--cn); font-weight: 650; font-size: 20px; letter-spacing: .03em; }
.cta__cn { font-size: 12px; letter-spacing: 0; }
/* Ordinary short speech remains readable, without a badge above the robot. */
.bubble { z-index: 6; left: var(--speech-left, 26.5%); top: var(--speech-top, 49%); width: var(--speech-width, min(380px, 100%)); }
.bubble > span { position: relative; display: block; bottom: auto; width: 100%; transform: scale(.96); transform-origin: 100% 0; border: 1px solid var(--speech-line); border-radius: 16px 5px 16px 16px; padding: 14px 17px; background: var(--speech-bg); color: var(--speech-text); box-shadow: 0 8px 24px var(--speech-shadow); }
.bubble.is-on > span { transform: scale(1); }
.bubble > span::after { left: calc(100% - 1px); top: 14px; bottom: auto; width: 16px; height: 20px; margin-left: 0; background: var(--speech-bg); clip-path: polygon(0 25%, 100% 0, 0 100%); }
body[data-guide-open] .bubble { visibility: hidden !important; }
body[data-guide-open] .stage__notice { visibility: hidden; }
/* Only the entrance being described rises. Hovering its peers stays quiet. */
body[data-guide-open] .node.is-active { outline: 2px solid var(--c); outline-offset: -2px; }
body[data-guide-open] .node:not(.is-active) { margin-top: 0; background: var(--bg); box-shadow: none; }
body[data-guide-open] .node:not(.is-active)::before { opacity: .82; }
body[data-guide-open] .node:not(.is-active)::after { opacity: 0; }
body[data-guide-open] .node:not(.is-active) .node__reveal { max-height: 0; margin-top: 0; opacity: 0; pointer-events: none; transform: translateY(8px); }
body[data-guide-open] .node:not(.is-active) .node__desc { max-height: 34px; margin-top: 5px; opacity: 1; }
body[data-guide-open] .node:not(.is-active) .node__arrow { background: transparent; border-color: var(--line-2); color: var(--c); }
body[data-guide-open] .node:not(.is-active) .node__arrow svg { transform: none; }
@media (min-width: 1181px) {
  .intro .guide-launcher { margin-top: -16px; }
  .onboarding[data-view='step'] { padding-top: 12px; padding-bottom: 12px; }
  .onboarding[data-view='step'] .onboarding__speaker { margin-bottom: 6px; }
  .onboarding[data-view='step'] .onboarding__copy { line-height: 1.65; }
  .onboarding[data-view='step'] .onboarding__copy p + p { margin-top: 4px; }
  .onboarding[data-view='step'] .onboarding__actions { padding-top: 8px; margin-top: 8px; }
}
@media (min-width: 861px) and (max-width: 1180px) { .intro { flex-wrap: wrap; } .intro .guide-launcher { flex-basis: 100%; margin-top: -22px; } }
@media (max-width: 640px) {
  .onboarding { padding: 12px 14px; }
  .onboarding__speaker { gap: 6px; margin-bottom: 6px; }
  .guide-button, .guide-choice, .guide-text-button { min-height: 44px; }
  .guide-button { padding: 10px; gap: 5px; }
  .guide-button small { font-size: 10px; }
  .guide-close { width: 40px; height: 40px; margin-top: -9px; margin-bottom: -9px; }
  .guide-launcher { min-height: 44px; }
  .onboarding__actions { gap: 6px; }
  .onboarding[data-view='invite'] .guide-button__arrow { display: none; }
  .cta__en { font-size: 18px; }
  .cta__cn { white-space: normal; }
  .onboarding[data-view='summary'] { padding: 10px 12px; }
  .onboarding[data-view='summary'] h2 { font-size: 14px; line-height: 20px; margin-bottom: 4px; }
  .onboarding[data-view='summary'] .onboarding__speaker { margin-bottom: 4px; }
  .onboarding[data-view='summary'] .guide-choices { margin-top: 6px; }
  .onboarding[data-view='summary'] .onboarding__actions { margin-top: 4px; }
}
@media (prefers-reduced-motion: reduce) { .guide-button, .guide-button__arrow, .guide-choice, .guide-close { transition: none; } }
/* jetbrains-mono-cyrillic-ext-400-normal */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-display: swap;
  font-weight: 400;
  src: url(../fonts/jetbrains-mono-cyrillic-ext-400-normal.woff2) format('woff2'), url(../fonts/jetbrains-mono-cyrillic-ext-400-normal.woff) format('woff');
  unicode-range: U+0460-052F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F;
}

/* jetbrains-mono-cyrillic-400-normal */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-display: swap;
  font-weight: 400;
  src: url(../fonts/jetbrains-mono-cyrillic-400-normal.woff2) format('woff2'), url(../fonts/jetbrains-mono-cyrillic-400-normal.woff) format('woff');
  unicode-range: U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116;
}

/* jetbrains-mono-greek-400-normal */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-display: swap;
  font-weight: 400;
  src: url(../fonts/jetbrains-mono-greek-400-normal.woff2) format('woff2'), url(../fonts/jetbrains-mono-greek-400-normal.woff) format('woff');
  unicode-range: U+0370-0377,U+037A-037F,U+0384-038A,U+038C,U+038E-03A1,U+03A3-03FF;
}

/* jetbrains-mono-vietnamese-400-normal */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-display: swap;
  font-weight: 400;
  src: url(../fonts/jetbrains-mono-vietnamese-400-normal.woff2) format('woff2'), url(../fonts/jetbrains-mono-vietnamese-400-normal.woff) format('woff');
  unicode-range: U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB;
}

/* jetbrains-mono-latin-ext-400-normal */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-display: swap;
  font-weight: 400;
  src: url(../fonts/jetbrains-mono-latin-ext-400-normal.woff2) format('woff2'), url(../fonts/jetbrains-mono-latin-ext-400-normal.woff) format('woff');
  unicode-range: U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF;
}

/* jetbrains-mono-latin-400-normal */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-display: swap;
  font-weight: 400;
  src: url(../fonts/jetbrains-mono-latin-400-normal.woff2) format('woff2'), url(../fonts/jetbrains-mono-latin-400-normal.woff) format('woff');
  unicode-range: U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;
}/* jetbrains-mono-cyrillic-ext-500-normal */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-display: swap;
  font-weight: 500;
  src: url(../fonts/jetbrains-mono-cyrillic-ext-500-normal.woff2) format('woff2'), url(../fonts/jetbrains-mono-cyrillic-ext-500-normal.woff) format('woff');
  unicode-range: U+0460-052F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F;
}

/* jetbrains-mono-cyrillic-500-normal */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-display: swap;
  font-weight: 500;
  src: url(../fonts/jetbrains-mono-cyrillic-500-normal.woff2) format('woff2'), url(../fonts/jetbrains-mono-cyrillic-500-normal.woff) format('woff');
  unicode-range: U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116;
}

/* jetbrains-mono-greek-500-normal */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-display: swap;
  font-weight: 500;
  src: url(../fonts/jetbrains-mono-greek-500-normal.woff2) format('woff2'), url(../fonts/jetbrains-mono-greek-500-normal.woff) format('woff');
  unicode-range: U+0370-0377,U+037A-037F,U+0384-038A,U+038C,U+038E-03A1,U+03A3-03FF;
}

/* jetbrains-mono-vietnamese-500-normal */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-display: swap;
  font-weight: 500;
  src: url(../fonts/jetbrains-mono-vietnamese-500-normal.woff2) format('woff2'), url(../fonts/jetbrains-mono-vietnamese-500-normal.woff) format('woff');
  unicode-range: U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB;
}

/* jetbrains-mono-latin-ext-500-normal */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-display: swap;
  font-weight: 500;
  src: url(../fonts/jetbrains-mono-latin-ext-500-normal.woff2) format('woff2'), url(../fonts/jetbrains-mono-latin-ext-500-normal.woff) format('woff');
  unicode-range: U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF;
}

/* jetbrains-mono-latin-500-normal */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-display: swap;
  font-weight: 500;
  src: url(../fonts/jetbrains-mono-latin-500-normal.woff2) format('woff2'), url(../fonts/jetbrains-mono-latin-500-normal.woff) format('woff');
  unicode-range: U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;
}/* jetbrains-mono-cyrillic-ext-700-normal */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-display: swap;
  font-weight: 700;
  src: url(../fonts/jetbrains-mono-cyrillic-ext-700-normal.woff2) format('woff2'), url(../fonts/jetbrains-mono-cyrillic-ext-700-normal.woff) format('woff');
  unicode-range: U+0460-052F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F;
}

/* jetbrains-mono-cyrillic-700-normal */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-display: swap;
  font-weight: 700;
  src: url(../fonts/jetbrains-mono-cyrillic-700-normal.woff2) format('woff2'), url(../fonts/jetbrains-mono-cyrillic-700-normal.woff) format('woff');
  unicode-range: U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116;
}

/* jetbrains-mono-greek-700-normal */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-display: swap;
  font-weight: 700;
  src: url(../fonts/jetbrains-mono-greek-700-normal.woff2) format('woff2'), url(../fonts/jetbrains-mono-greek-700-normal.woff) format('woff');
  unicode-range: U+0370-0377,U+037A-037F,U+0384-038A,U+038C,U+038E-03A1,U+03A3-03FF;
}

/* jetbrains-mono-vietnamese-700-normal */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-display: swap;
  font-weight: 700;
  src: url(../fonts/jetbrains-mono-vietnamese-700-normal.woff2) format('woff2'), url(../fonts/jetbrains-mono-vietnamese-700-normal.woff) format('woff');
  unicode-range: U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB;
}

/* jetbrains-mono-latin-ext-700-normal */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-display: swap;
  font-weight: 700;
  src: url(../fonts/jetbrains-mono-latin-ext-700-normal.woff2) format('woff2'), url(../fonts/jetbrains-mono-latin-ext-700-normal.woff) format('woff');
  unicode-range: U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF;
}

/* jetbrains-mono-latin-700-normal */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-display: swap;
  font-weight: 700;
  src: url(../fonts/jetbrains-mono-latin-700-normal.woff2) format('woff2'), url(../fonts/jetbrains-mono-latin-700-normal.woff) format('woff');
  unicode-range: U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;
}/* jetbrains-mono-cyrillic-ext-800-normal */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-display: swap;
  font-weight: 800;
  src: url(../fonts/jetbrains-mono-cyrillic-ext-800-normal.woff2) format('woff2'), url(../fonts/jetbrains-mono-cyrillic-ext-800-normal.woff) format('woff');
  unicode-range: U+0460-052F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F;
}

/* jetbrains-mono-cyrillic-800-normal */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-display: swap;
  font-weight: 800;
  src: url(../fonts/jetbrains-mono-cyrillic-800-normal.woff2) format('woff2'), url(../fonts/jetbrains-mono-cyrillic-800-normal.woff) format('woff');
  unicode-range: U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116;
}

/* jetbrains-mono-greek-800-normal */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-display: swap;
  font-weight: 800;
  src: url(../fonts/jetbrains-mono-greek-800-normal.woff2) format('woff2'), url(../fonts/jetbrains-mono-greek-800-normal.woff) format('woff');
  unicode-range: U+0370-0377,U+037A-037F,U+0384-038A,U+038C,U+038E-03A1,U+03A3-03FF;
}

/* jetbrains-mono-vietnamese-800-normal */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-display: swap;
  font-weight: 800;
  src: url(../fonts/jetbrains-mono-vietnamese-800-normal.woff2) format('woff2'), url(../fonts/jetbrains-mono-vietnamese-800-normal.woff) format('woff');
  unicode-range: U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB;
}

/* jetbrains-mono-latin-ext-800-normal */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-display: swap;
  font-weight: 800;
  src: url(../fonts/jetbrains-mono-latin-ext-800-normal.woff2) format('woff2'), url(../fonts/jetbrains-mono-latin-ext-800-normal.woff) format('woff');
  unicode-range: U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF;
}

/* jetbrains-mono-latin-800-normal */
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-display: swap;
  font-weight: 800;
  src: url(../fonts/jetbrains-mono-latin-800-normal.woff2) format('woff2'), url(../fonts/jetbrains-mono-latin-800-normal.woff) format('woff');
  unicode-range: U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;
}/* silkscreen-latin-ext-400-normal */
@font-face {
  font-family: 'Silkscreen';
  font-style: normal;
  font-display: swap;
  font-weight: 400;
  src: url(../fonts/silkscreen-latin-ext-400-normal.woff2) format('woff2'), url(../fonts/silkscreen-latin-ext-400-normal.woff) format('woff');
  unicode-range: U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF;
}

/* silkscreen-latin-400-normal */
@font-face {
  font-family: 'Silkscreen';
  font-style: normal;
  font-display: swap;
  font-weight: 400;
  src: url(../fonts/silkscreen-latin-400-normal.woff2) format('woff2'), url(../fonts/silkscreen-latin-400-normal.woff) format('woff');
  unicode-range: U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD;
}/* Connector map revealed by the SET SAIL tour. It is a viewport layer so the
   routes stay aligned when the orthographic camera or page layout changes. */
.route-overlay {
  position: fixed;
  inset: 0;
  z-index: 2;
  /* The guided tour now uses the island lights and robot gaze as the cue.
     Keep the bridge mounted for layout compatibility, but don't draw route
     lines over the scene/cards. */
  display: none !important;
  width: 100vw;
  height: 100vh;
  overflow: visible;
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.45s ease, visibility 0s linear 0.45s;
}
.route-overlay.is-on {
  opacity: 1;
  visibility: visible;
  transition-delay: 0s;
}
.route-overlay__route {
  color: var(--route-color);
  opacity: 0.32;
  transition: opacity 0.35s ease, filter 0.35s ease;
}
.route-overlay__route.is-active {
  opacity: 1;
  filter: drop-shadow(0 0 5px color-mix(in srgb, var(--route-color) 75%, transparent));
}
.route-overlay__route.is-hidden {
  opacity: 0;
}
.route-overlay__line {
  stroke: var(--route-color);
  stroke-width: 1.35;
  stroke-linecap: square;
  stroke-dasharray: none;
  stroke-dashoffset: 0;
  opacity: 0.76;
}
.route-overlay__route.is-active .route-overlay__line {
  stroke-width: 2;
  opacity: 1;
}
.route-overlay__route.is-drawing .route-overlay__line {
  stroke-dasharray: 1;
  animation: route-draw 0.95s cubic-bezier(0.22, 0.8, 0.2, 1) both;
}
@keyframes route-draw {
  from {
    stroke-dashoffset: 1;
    opacity: 0;
  }
  to {
    stroke-dashoffset: 0;
    opacity: 1;
  }
}
.route-overlay__dot {
  fill: var(--route-color);
  opacity: 0.78;
  vector-effect: non-scaling-stroke;
}
.route-overlay__route.is-active .route-overlay__dot {
  opacity: 1;
  filter: drop-shadow(0 0 4px var(--route-color));
}
.route-overlay__dot--target {
  fill: var(--bg-2, #f5f7fb);
  stroke: var(--route-color);
  stroke-width: 1.25;
}
@media (prefers-reduced-motion: reduce) {
  .route-overlay__route.is-drawing .route-overlay__line {
    animation: none;
  }
}
@media (max-width: 640px) {
  .route-overlay__line {
    stroke-width: 1;
  }
  .route-overlay__route.is-active .route-overlay__line {
    stroke-width: 1.5;
  }
}