:root {
  color-scheme: dark;
  --bg: #07111f;
  --bg-deep: #040a12;
  --panel: rgba(13, 27, 46, 0.8);
  --panel-solid: #0d1b2e;
  --line: rgba(188, 219, 235, 0.14);
  --line-strong: rgba(188, 219, 235, 0.25);
  --text: #f4f8fb;
  --muted: #98aabd;
  --muted-strong: #c5d2dd;
  --mint: #72f5c5;
  --lime: #b9ff68;
  --blue: #7d9cff;
  --amber: #ffc969;
  --red: #ff7d8a;
  --shell: min(1120px, calc(100vw - 40px));
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
  background: var(--bg-deep);
}

body {
  min-width: 320px;
  margin: 0;
  overflow-x: hidden;
  color: var(--text);
  background:
    radial-gradient(circle at 16% -10%, rgba(87, 137, 196, 0.2), transparent 32rem),
    linear-gradient(180deg, #081422, var(--bg) 55%, #050c16);
}

button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
a { color: inherit; text-decoration: none; }

.shell {
  width: var(--shell);
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  min-height: 72px;
  padding: 9px max(20px, calc((100vw - 1120px) / 2));
  border-bottom: 1px solid rgba(188, 219, 235, 0.1);
  background: rgba(5, 14, 24, 0.82);
  backdrop-filter: blur(20px) saturate(145%);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  width: fit-content;
}

.brand img {
  border: 1px solid rgba(114, 245, 197, 0.24);
  border-radius: 11px;
}

.brand span { display: grid; gap: 1px; }
.brand strong { font-size: 15px; letter-spacing: 0.02em; }
.brand small {
  color: var(--muted);
  font-size: 9px;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.site-nav,
.language-switch {
  display: inline-flex;
  align-items: center;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(12, 25, 42, 0.58);
}

.site-nav { gap: 3px; }

.site-nav a {
  padding: 8px 13px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 12px;
}

.site-nav a.active,
.site-nav a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.07);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  justify-self: end;
}

.language-switch button {
  min-width: 38px;
  min-height: 29px;
  padding: 0 8px;
  border: 0;
  border-radius: 999px;
  color: var(--muted);
  background: transparent;
  cursor: pointer;
  font-size: 9px;
  font-weight: 750;
}

.language-switch button.active {
  color: #06131e;
  background: var(--mint);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 46px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 13px;
  cursor: pointer;
  font-size: 12px;
  font-weight: 750;
  transition: transform 150ms ease, opacity 150ms ease, background 150ms ease;
}

.button:hover { transform: translateY(-1px); }
.button:disabled { cursor: not-allowed; opacity: 0.42; transform: none; }
.button.compact { min-height: 36px; padding-inline: 12px; font-size: 10px; }
.button-primary { color: #06141f; background: linear-gradient(135deg, var(--mint), #8af0ff); }
.button-secondary { border-color: var(--line-strong); color: var(--text); background: rgba(255, 255, 255, 0.04); }
.button-quiet { border-color: var(--line); color: var(--muted-strong); background: rgba(255, 255, 255, 0.025); }

.button-pulse {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 14px currentColor;
}

.home-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.18fr) minmax(340px, 0.82fr);
  gap: clamp(48px, 8vw, 96px);
  align-items: center;
  min-height: 650px;
  padding-block: 78px;
}

.eyebrow,
.section-index,
.path-kicker {
  margin: 0;
  color: var(--mint);
  font-size: 10px;
  font-weight: 750;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.hero-copy h1,
.probe-copy h1 {
  max-width: 760px;
  margin: 20px 0 24px;
  font-size: clamp(48px, 6.6vw, 78px);
  font-weight: 680;
  letter-spacing: -0.06em;
  line-height: 0.98;
}

.hero-copy h1 em { color: var(--mint); font-style: normal; }

.hero-lede {
  max-width: 680px;
  margin: 0;
  color: var(--muted-strong);
  font-size: clamp(15px, 1.8vw, 18px);
  line-height: 1.72;
}

.hero-actions,
.probe-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 30px;
}

.readiness-panel {
  padding: 28px;
  border: 1px solid rgba(114, 245, 197, 0.19);
  border-radius: 24px;
  background:
    radial-gradient(circle at 85% 5%, rgba(114, 245, 197, 0.1), transparent 17rem),
    rgba(10, 24, 41, 0.78);
  box-shadow: 0 28px 70px rgba(0, 0, 0, 0.24);
}

.readiness-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  color: var(--muted);
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.mode-mark {
  display: grid;
  width: 46px;
  height: 46px;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 13px;
  font-weight: 800;
}

.mode-mark[data-mode="standard"] { color: var(--blue); border-color: rgba(125, 156, 255, 0.35); }
.mode-mark[data-mode="enhanced"] { color: var(--mint); border-color: rgba(114, 245, 197, 0.4); }

.readiness-panel h2 {
  margin: 24px 0 9px;
  font-size: 28px;
  letter-spacing: -0.035em;
}

.readiness-panel > p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.65;
}

.summary-facts {
  margin: 26px 0 20px;
}

.summary-facts div,
.probe-preflight div {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 18px;
  padding: 12px 0;
  border-top: 1px solid var(--line);
}

.summary-facts dt,
.probe-preflight dt {
  color: var(--muted);
  font-size: 10px;
}

.summary-facts dd,
.probe-preflight dd {
  margin: 0;
  color: var(--muted-strong);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 10px;
  text-align: right;
}

[data-state="pass"] { color: var(--mint) !important; }
[data-state="warn"] { color: var(--amber) !important; }
[data-state="fail"] { color: var(--red) !important; }

.readiness-action {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 45px;
  padding: 0 14px;
  border-top: 1px solid var(--line);
  color: var(--mint);
  font-size: 11px;
}

.readiness-action::after { content: "→"; }
.readiness-action.is-disabled { color: var(--muted); pointer-events: none; }

.section {
  padding-top: 100px;
}

.section-heading {
  display: grid;
  grid-template-columns: 1fr minmax(280px, 0.62fr);
  gap: 60px;
  align-items: end;
  margin-bottom: 34px;
}

.section-heading h2 {
  margin: 8px 0 0;
  font-size: clamp(36px, 5vw, 54px);
  letter-spacing: -0.05em;
}

.section-heading > p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.capability-card {
  min-height: 208px;
  padding: 21px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(11, 25, 43, 0.68);
}

.capability-card[data-state="pass"] { border-color: rgba(114, 245, 197, 0.2); }
.capability-card[data-state="fail"] { border-color: rgba(255, 125, 138, 0.22); }

.capability-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.capability-symbol {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  color: var(--muted-strong);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 10px;
  font-weight: 800;
}

.capability-status {
  color: var(--muted);
  font-size: 8px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.capability-card h3 { margin: 20px 0 8px; font-size: 17px; }
.capability-card p {
  margin: 0;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.55;
}

.capability-value {
  display: block;
  margin-top: 16px;
  overflow: hidden;
  color: var(--muted-strong);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 9px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.runtime-path { padding-bottom: 90px; }

.path-flow {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 20px;
  align-items: stretch;
}

.path-flow article {
  position: relative;
  min-height: 240px;
  padding: 28px;
  border-top: 1px solid var(--line-strong);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.025), transparent);
}

.path-flow article > span {
  position: absolute;
  top: 28px;
  right: 28px;
  color: rgba(196, 218, 231, 0.23);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 32px;
}

.path-flow h3 { margin: 18px 0 11px; font-size: 25px; letter-spacing: -0.035em; }
.path-flow article > p:last-child { max-width: 420px; margin: 0; color: var(--muted); font-size: 12px; line-height: 1.7; }

.path-connector {
  display: grid;
  grid-template-rows: 1fr auto 1fr;
  justify-items: center;
  gap: 8px;
  color: var(--mint);
}

.path-connector i { width: 1px; height: 100%; background: linear-gradient(transparent, var(--line-strong)); }
.path-connector i:last-child { background: linear-gradient(var(--line-strong), transparent); }

.single-outcome {
  display: grid;
  grid-template-columns: 1fr auto auto;
  gap: 18px;
  align-items: center;
  margin-top: 20px;
  padding: 20px 24px;
  border: 1px solid rgba(114, 245, 197, 0.2);
  border-radius: 16px;
  background: rgba(114, 245, 197, 0.05);
}

.single-outcome strong { font-size: 13px; }
.single-outcome span { color: var(--muted); font-size: 10px; }

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 130px;
  border-top: 1px solid var(--line);
}

.site-footer div { display: flex; align-items: center; gap: 9px; }
.site-footer p { max-width: 480px; margin: 0; color: var(--muted); font-size: 10px; text-align: right; }

/* Live probe */
.probe-main {
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(480px, 1.15fr);
  gap: clamp(44px, 7vw, 80px);
  align-items: center;
  min-height: 650px;
  padding-block: 62px;
}

.back-link { display: inline-block; margin-bottom: 38px; color: var(--muted); font-size: 10px; }
.probe-copy h1 { margin-top: 16px; font-size: clamp(46px, 6vw, 70px); }

.probe-mode-line {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: center;
  margin-top: 28px;
}

.probe-mode {
  padding: 8px 10px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 9px;
  font-weight: 800;
}

.probe-mode[data-mode="standard"] { color: var(--blue); border-color: rgba(125, 156, 255, 0.35); }
.probe-mode[data-mode="enhanced"] { color: var(--mint); border-color: rgba(114, 245, 197, 0.36); }
.probe-mode-line p { margin: 0; color: var(--muted); font-size: 11px; line-height: 1.55; }
.probe-preflight { margin: 24px 0 0; }
.probe-actions { align-items: center; }
.probe-actions p { flex: 1 1 240px; margin: 0; color: var(--muted); font-size: 10px; line-height: 1.5; }

.probe-stage {
  position: relative;
  min-height: 480px;
  overflow: hidden;
  border: 1px solid rgba(114, 245, 197, 0.18);
  border-radius: 26px;
  background:
    linear-gradient(180deg, rgba(29, 78, 91, 0.08), rgba(3, 10, 17, 0.48)),
    radial-gradient(circle at 50% 25%, #174958, #06111c 68%);
}

#probe-xr-canvas { position: absolute; inset: 0; width: 100%; height: 100%; }

.stage-grid {
  position: absolute;
  inset: 48% -25% -32%;
  background:
    linear-gradient(rgba(114, 245, 197, 0.14) 1px, transparent 1px),
    linear-gradient(90deg, rgba(114, 245, 197, 0.14) 1px, transparent 1px);
  background-size: 36px 36px;
  transform: perspective(360px) rotateX(62deg);
  transform-origin: center top;
}

.stage-reticle {
  position: absolute;
  top: 56%;
  left: 50%;
  width: 88px;
  height: 34px;
  border: 2px solid var(--mint);
  border-radius: 50%;
  box-shadow: 0 0 28px rgba(114, 245, 197, 0.25);
  transform: translate(-50%, -50%);
}

.stage-reticle i {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--mint);
  transform: translate(-50%, -50%);
}

.stage-copy {
  position: absolute;
  right: 24px;
  bottom: 22px;
  left: 24px;
  display: grid;
  gap: 5px;
}

.stage-copy span { color: var(--mint); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 9px; }
.stage-copy strong { font-size: 15px; }
.stage-copy small { color: var(--muted); font-size: 9px; }

.probe-explanation {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 28px;
  align-items: center;
  padding-block: 40px 100px;
}

.probe-explanation > div { padding-top: 18px; border-top: 1px solid var(--line); }
.probe-explanation span { color: var(--mint); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 9px; }
.probe-explanation strong { display: block; margin-top: 8px; font-size: 16px; }
.probe-explanation p { margin: 7px 0 0; color: var(--muted); font-size: 10px; line-height: 1.55; }
.probe-explanation > i { color: var(--mint); font-style: normal; }

/* DOM Overlay: the actual live probe UI */
.xr-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  padding: max(14px, env(safe-area-inset-top)) max(14px, env(safe-area-inset-right)) max(16px, env(safe-area-inset-bottom)) max(14px, env(safe-area-inset-left));
  pointer-events: none;
}

.xr-overlay[hidden] { display: none; }

.xr-overlay-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  pointer-events: auto;
}

.xr-overlay-top > div {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 12px;
  border: 1px solid rgba(255, 255, 255, 0.17);
  border-radius: 999px;
  background: rgba(3, 10, 18, 0.68);
  backdrop-filter: blur(14px);
}

.xr-overlay-top span { color: var(--mint); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 8px; font-weight: 800; }
.xr-overlay-top strong { color: white; font-size: 10px; }

.xr-overlay-top button {
  min-height: 40px;
  padding: 0 14px;
  border: 1px solid rgba(255, 255, 255, 0.17);
  border-radius: 12px;
  color: white;
  background: rgba(3, 10, 18, 0.68);
  backdrop-filter: blur(14px);
  cursor: pointer;
  font-size: 10px;
  font-weight: 750;
}

.overlay-scene-status {
  position: absolute;
  bottom: max(18px, env(safe-area-inset-bottom));
  left: 50%;
  display: flex;
  align-items: center;
  gap: 8px;
  max-width: min(86vw, 460px);
  padding: 9px 13px;
  border: 1px solid rgba(255, 255, 255, 0.17);
  border-radius: 999px;
  color: white;
  background: rgba(3, 10, 18, 0.68);
  backdrop-filter: blur(14px);
  transform: translateX(-50%);
}

.overlay-scene-status p { margin: 0; font-size: 9px; text-align: center; }
.overlay-status-dot { width: 7px; height: 7px; flex: 0 0 auto; border-radius: 50%; background: var(--mint); box-shadow: 0 0 12px var(--mint); }

.xr-overlay-front {
  position: absolute;
  top: max(68px, calc(env(safe-area-inset-top) + 58px));
  right: max(14px, env(safe-area-inset-right));
  display: none;
  width: min(350px, calc(100vw - 28px));
  padding: 10px;
  border: 1px solid rgba(255, 255, 255, 0.19);
  border-radius: 20px;
  background: rgba(3, 10, 18, 0.72);
  box-shadow: 0 20px 55px rgba(0, 0, 0, 0.34);
  backdrop-filter: blur(16px);
  pointer-events: auto;
}

.xr-overlay[data-mode="enhanced"] .xr-overlay-front { display: grid; gap: 9px; }

.overlay-camera-screen {
  position: relative;
  aspect-ratio: 4 / 3;
  max-height: 42vh;
  overflow: hidden;
  border-radius: 13px;
  background: #06101b;
}

#front-camera-overlay-preview { display: block; width: 100%; height: 100%; }

.overlay-camera-placeholder {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 12px;
  padding: 18px;
  text-align: center;
  background: radial-gradient(circle, rgba(56, 100, 118, 0.22), transparent 55%);
  transition: opacity 160ms ease;
}

.overlay-camera-placeholder.is-hidden { opacity: 0; pointer-events: none; }
.face-guide { width: 68px; height: 90px; border: 1px dashed rgba(114, 245, 197, 0.4); border-radius: 48%; }
.overlay-camera-placeholder strong { max-width: 220px; color: var(--muted-strong); font-size: 10px; line-height: 1.45; }
.mirror-pill { position: absolute; right: 10px; bottom: 10px; padding: 5px 7px; border-radius: 999px; color: var(--muted-strong); background: rgba(4, 12, 21, 0.62); font-size: 7px; }

.overlay-camera-metrics { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 6px; }
.overlay-camera-metrics div { min-width: 0; padding: 7px; border-radius: 9px; background: rgba(255, 255, 255, 0.05); }
.overlay-camera-metrics span, .overlay-camera-metrics strong { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.overlay-camera-metrics span { color: rgba(216, 231, 240, 0.66); font-size: 6px; text-transform: uppercase; }
.overlay-camera-metrics strong { margin-top: 3px; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 9px; }

.overlay-concurrency-state {
  margin: 0;
  padding: 8px 9px;
  border-radius: 9px;
  color: #ffe1a8;
  background: rgba(94, 62, 12, 0.34);
  font-size: 8px;
  line-height: 1.45;
}

.overlay-concurrency-state[data-state="pass"] { color: #caffec !important; background: rgba(15, 85, 62, 0.34); }
.overlay-concurrency-state[data-state="fail"] { color: #ffd6da !important; background: rgba(100, 24, 35, 0.4); }

.toast-region {
  position: fixed;
  right: max(16px, env(safe-area-inset-right));
  bottom: max(16px, env(safe-area-inset-bottom));
  z-index: 150;
  display: grid;
  gap: 8px;
  width: min(340px, calc(100vw - 32px));
  pointer-events: none;
}

.toast {
  padding: 12px 14px;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  color: var(--muted-strong);
  background: rgba(10, 23, 38, 0.95);
  box-shadow: 0 18px 46px rgba(0, 0, 0, 0.32);
  font-size: 10px;
}

@media (max-width: 900px) {
  .site-header { grid-template-columns: 1fr auto; }
  .site-nav { display: none; }
  .home-hero, .probe-main { grid-template-columns: 1fr; min-height: auto; }
  .home-hero { padding-block: 64px; }
  .readiness-panel { max-width: 650px; }
  .capability-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .probe-stage { min-height: 430px; }
}

@media (max-width: 640px) {
  :root { --shell: min(100% - 28px, 1120px); }
  .site-header { min-height: 66px; padding-inline: 14px; }
  .brand small, .header-actions > .button { display: none; }
  .language-switch button { min-width: 34px; padding-inline: 7px; }
  .hero-copy h1, .probe-copy h1 { font-size: clamp(42px, 13vw, 58px); }
  .home-hero { gap: 40px; padding-block: 54px; }
  .section { padding-top: 78px; }
  .section-heading { grid-template-columns: 1fr; gap: 13px; }
  .section-heading h2 { font-size: 36px; }
  .capability-grid { grid-template-columns: 1fr; }
  .capability-card { min-height: 180px; }
  .path-flow, .probe-explanation { grid-template-columns: 1fr; }
  .path-connector { grid-template-columns: 1fr auto 1fr; grid-template-rows: auto; }
  .path-connector i { width: 100%; height: 1px; background: linear-gradient(90deg, transparent, var(--line-strong)); }
  .path-connector i:last-child { background: linear-gradient(90deg, var(--line-strong), transparent); }
  .single-outcome { grid-template-columns: 1fr; }
  .single-outcome .button { justify-self: start; }
  .site-footer { align-items: flex-start; flex-direction: column; justify-content: center; gap: 12px; }
  .site-footer p { text-align: left; }
  .probe-main { gap: 38px; padding-block: 38px; }
  .back-link { margin-bottom: 26px; }
  .probe-stage { min-height: 330px; }
  .probe-explanation { gap: 14px; padding-bottom: 70px; }
  .probe-explanation > i { text-align: center; }
  .xr-overlay-top > div strong { display: none; }
  .xr-overlay-front {
    top: max(64px, calc(env(safe-area-inset-top) + 54px));
    right: max(8px, env(safe-area-inset-right));
    width: min(330px, calc(100vw - 16px));
    padding: 8px;
  }
  .overlay-camera-screen { max-height: 36vh; }
  .overlay-scene-status { bottom: max(12px, env(safe-area-inset-bottom)); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}