:root {
  color-scheme: dark;
  --ink: #030712;
  --ink-soft: #07101f;
  --ink-raised: #0a1425;
  --navy: #081c3b;
  --paper: #f5f8fc;
  --white: #ffffff;
  --muted: #91a0b7;
  --muted-light: #52637b;
  --blue: #2577ff;
  --blue-bright: #4c91ff;
  --cyan: #26d5cf;
  --violet: #8b7dff;
  --quantum-gold: #ffc86b;
  --line: rgba(166, 191, 224, 0.16);
  --line-light: rgba(5, 25, 56, 0.12);
  --sans: Inter, "Avenir Next", "Segoe UI", Helvetica, Arial, sans-serif;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --shell: min(1180px, calc(100vw - 48px));
  --radius: 2px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--ink);
  color: var(--white);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body.menu-open {
  overflow: hidden;
}

::selection {
  background: rgba(38, 213, 207, 0.28);
  color: var(--white);
}

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

img,
svg {
  display: block;
}

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

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  z-index: 999;
  top: 12px;
  left: 12px;
  padding: 10px 16px;
  background: var(--white);
  color: var(--ink);
  transform: translateY(-160%);
  transition: transform 160ms ease;
}

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

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

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

.site-header {
  position: fixed;
  z-index: 100;
  inset: 0 0 auto;
  height: 78px;
  border-bottom: 1px solid transparent;
  background: rgba(1, 1, 13, 0.78);
  backdrop-filter: blur(16px);
  transition: height 220ms ease, background 220ms ease, border-color 220ms ease;
}

.site-header.scrolled {
  height: 68px;
  background: rgba(1, 1, 13, 0.95);
  border-color: var(--line);
}

.nav-wrap {
  width: var(--shell);
  height: 100%;
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.brand img {
  width: 38px;
  height: 38px;
  border-radius: 0;
  background: #01010d;
  mix-blend-mode: lighten;
}

.brand strong {
  color: var(--blue-bright);
  font-weight: 500;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(22px, 2.4vw, 36px);
  color: #b8c4d5;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.075em;
  text-transform: uppercase;
}

.site-nav > a:not(.nav-cta) {
  position: relative;
  padding-block: 10px;
  transition: color 180ms ease;
}

.site-nav > a:not(.nav-cta)::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 5px;
  width: 100%;
  height: 1px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 180ms ease;
}

.site-nav > a:not(.nav-cta):hover {
  color: var(--white);
}

.site-nav > a:not(.nav-cta):hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav-cta {
  min-height: 42px;
  padding: 0 16px;
  border: 1px solid rgba(76, 145, 255, 0.55);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--white);
  background: rgba(37, 119, 255, 0.08);
  transition: background 180ms ease, border-color 180ms ease;
}

.nav-cta:hover {
  background: rgba(37, 119, 255, 0.18);
  border-color: var(--blue-bright);
}

.nav-cta svg,
.button svg {
  width: 16px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
  stroke-linecap: square;
  stroke-linejoin: miter;
  transition: transform 180ms ease;
}

.nav-cta:hover svg,
.button:hover svg {
  transform: translateX(3px);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--line);
  background: transparent;
}

.menu-toggle > span:not(.sr-only) {
  display: block;
  width: 18px;
  height: 1px;
  margin: 6px auto;
  background: var(--white);
  transition: transform 180ms ease;
}

.hero {
  position: relative;
  min-height: 900px;
  padding: 190px 0 0;
  overflow: hidden;
  background:
    radial-gradient(circle at 79% 33%, rgba(37, 119, 255, 0.16), transparent 31%),
    radial-gradient(circle at 57% 9%, rgba(38, 213, 207, 0.045), transparent 26%),
    linear-gradient(180deg, #02050d 0%, #030712 100%);
}

.hero::before {
  content: "";
  position: absolute;
  z-index: 1;
  top: 78px;
  bottom: 0;
  left: calc(50% - min(590px, calc(50vw - 24px)));
  width: 1px;
  background: var(--line);
}

.hero-grid,
.closing-grid {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(134, 164, 203, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(134, 164, 203, 0.045) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: linear-gradient(to bottom, black 0%, rgba(0, 0, 0, 0.75) 55%, transparent 96%);
}

.hero-orbit {
  position: absolute;
  border: 1px solid rgba(76, 145, 255, 0.12);
  border-radius: 50%;
  pointer-events: none;
}

.hero-orbit::before {
  content: "";
  position: absolute;
  top: 50%;
  left: -4px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 20px rgba(38, 213, 207, 0.65);
}

.orbit-one {
  width: 710px;
  height: 710px;
  right: -255px;
  top: 95px;
  animation: slow-spin 26s linear infinite;
}

.orbit-two {
  width: 500px;
  height: 500px;
  right: -130px;
  top: 205px;
  border-style: dashed;
  animation: slow-spin 38s linear infinite reverse;
}

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

.hero-layout {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 1.03fr) minmax(440px, 0.97fr);
  gap: clamp(60px, 8vw, 112px);
  align-items: center;
}

.eyebrow,
.kicker {
  margin: 0 0 24px;
  color: var(--blue-bright);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  line-height: 1.4;
  text-transform: uppercase;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 11px;
  color: #a7b6ca;
}

.eyebrow span {
  width: 24px;
  height: 1px;
  background: var(--cyan);
  box-shadow: 0 0 12px rgba(38, 213, 207, 0.6);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 760px;
  margin-bottom: 30px;
  font-size: clamp(4rem, 6.2vw, 6.25rem);
  font-weight: 480;
  letter-spacing: -0.065em;
  line-height: 0.94;
}

h1 em,
.principle blockquote em {
  color: var(--blue-bright);
  font-family: var(--serif);
  font-weight: 400;
}

.hero-lede {
  max-width: 650px;
  margin-bottom: 36px;
  color: #b5c0d1;
  font-size: clamp(1.12rem, 1.4vw, 1.3rem);
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button {
  min-height: 54px;
  padding: 0 21px;
  border: 1px solid transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  font-size: 0.77rem;
  font-weight: 700;
  letter-spacing: 0.075em;
  line-height: 1.2;
  text-transform: uppercase;
  transition: transform 180ms ease, background 180ms ease, border-color 180ms ease, color 180ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button-primary {
  background: var(--blue);
  color: var(--white);
  box-shadow: 0 14px 40px rgba(37, 119, 255, 0.2);
}

.button-primary:hover {
  background: #3884ff;
}

.button-secondary {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.02);
  color: #d3dbe7;
}

.button-secondary:hover {
  border-color: rgba(255, 255, 255, 0.28);
  color: var(--white);
}

.availability {
  max-width: 570px;
  margin: 21px 0 0;
  color: #6f8099;
  font-size: 0.78rem;
  letter-spacing: 0.015em;
  line-height: 1.5;
}

.availability strong {
  color: #a9c6ff;
  font-weight: 700;
}

.signal-window {
  position: relative;
  border: 1px solid rgba(113, 153, 205, 0.23);
  background:
    linear-gradient(145deg, rgba(14, 30, 54, 0.92), rgba(5, 12, 25, 0.88)),
    var(--ink-soft);
  box-shadow: 0 42px 100px rgba(0, 0, 0, 0.48), inset 0 1px rgba(255, 255, 255, 0.025);
  transform-style: preserve-3d;
  will-change: transform;
}

.signal-window::before {
  content: "";
  position: absolute;
  inset: -1px;
  z-index: -1;
  background: linear-gradient(135deg, rgba(38, 213, 207, 0.25), transparent 26%, transparent 72%, rgba(37, 119, 255, 0.3));
  filter: blur(22px);
  opacity: 0.45;
}

.window-topline {
  min-height: 58px;
  padding: 0 19px;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: #899ab2;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.window-title {
  display: flex;
  align-items: center;
  gap: 9px;
}

.pulse {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 5px rgba(38, 213, 207, 0.08), 0 0 14px rgba(38, 213, 207, 0.8);
  animation: pulse 2.4s ease-in-out infinite;
}

@keyframes pulse {
  50% { opacity: 0.42; box-shadow: 0 0 0 2px rgba(38, 213, 207, 0.05); }
}

.signal-route {
  padding: 18px;
}

.signal-node {
  position: relative;
  min-height: 102px;
  padding: 18px 160px 18px 19px;
  border: 1px solid rgba(126, 155, 194, 0.14);
  background: rgba(4, 10, 22, 0.58);
}

.signal-node.node-active {
  border-color: rgba(38, 213, 207, 0.28);
  background: linear-gradient(90deg, rgba(38, 213, 207, 0.08), rgba(4, 10, 22, 0.7) 50%);
}

.signal-node::before {
  content: "";
  position: absolute;
  left: -1px;
  top: 24px;
  bottom: 24px;
  width: 2px;
  background: rgba(76, 145, 255, 0.55);
}

.signal-node.node-active::before {
  background: var(--cyan);
  box-shadow: 0 0 15px rgba(38, 213, 207, 0.45);
}

.node-label {
  color: #63738b;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
}

.node-name {
  margin-top: 5px;
  font-size: 1.13rem;
  font-weight: 650;
  letter-spacing: -0.02em;
}

.node-detail {
  margin-top: 2px;
  color: #8393aa;
  font-size: 0.78rem;
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: #7e8da3;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.095em;
  text-transform: uppercase;
}

.status::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: #5a697e;
}

.signal-node .status {
  position: absolute;
  top: 23px;
  right: 18px;
}

.status-live {
  color: #77ded9;
}

.status-live::before {
  background: var(--cyan);
  box-shadow: 0 0 9px rgba(38, 213, 207, 0.5);
}

.status-review {
  color: #8bb4ff;
}

.status-review::before {
  background: var(--blue-bright);
}

.route-line {
  position: relative;
  width: 1px;
  height: 20px;
  margin-left: 31px;
  background: rgba(76, 145, 255, 0.28);
  overflow: hidden;
}

.route-line span {
  position: absolute;
  inset: -100% 0 auto;
  height: 70%;
  background: linear-gradient(transparent, var(--blue-bright), transparent);
  animation: route-flow 2.6s ease-in-out infinite;
}

@keyframes route-flow {
  to { transform: translateY(280%); }
}

.evidence-strip {
  min-height: 72px;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.evidence-strip > div {
  padding: 15px 17px;
  border-right: 1px solid var(--line);
}

.evidence-strip > div:last-child {
  border-right: 0;
}

.evidence-strip span,
.evidence-strip strong {
  display: block;
}

.evidence-strip span {
  color: #62728a;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.095em;
  text-transform: uppercase;
}

.evidence-strip strong {
  margin-top: 3px;
  color: #b9c6d8;
  font-size: 0.75rem;
  font-weight: 600;
}

.trust-row {
  position: relative;
  z-index: 2;
  margin-top: 116px;
  min-height: 87px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  display: grid;
  grid-template-columns: 0.8fr repeat(3, 1fr);
  align-items: center;
  color: #8595ab;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.055em;
  text-transform: uppercase;
}

.trust-row > span {
  color: #56677f;
}

.trust-row > div {
  display: flex;
  align-items: center;
  gap: 11px;
}

.trust-row i {
  width: 4px;
  height: 4px;
  border: 1px solid var(--blue-bright);
  transform: rotate(45deg);
}

.section {
  padding: 145px 0;
}

.system-section {
  position: relative;
  background: var(--paper);
  color: #061127;
}

.system-section .kicker,
.method-section .kicker,
.company-section .kicker {
  color: #075ac7;
}

.system-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  width: 1px;
  height: 100%;
  background: var(--line-light);
}

.section-heading {
  position: relative;
  display: grid;
  grid-template-columns: 1.35fr 0.65fr;
  column-gap: 80px;
  align-items: end;
  margin-bottom: 70px;
}

.section-heading .kicker {
  grid-column: 1 / -1;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(2.75rem, 4.8vw, 5rem);
  font-weight: 520;
  letter-spacing: -0.055em;
  line-height: 1.02;
}

.section-heading > p:last-child {
  max-width: 410px;
  margin-bottom: 4px;
  color: var(--muted-light);
  font-size: 1rem;
  line-height: 1.75;
}

.system-map {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line-light);
  border-bottom: 1px solid var(--line-light);
}

.system-map::before {
  content: "";
  position: absolute;
  top: -4px;
  left: 0;
  width: 8px;
  height: 8px;
  background: var(--blue);
}

.system-card {
  position: relative;
  min-height: 460px;
  padding: 34px 34px 30px;
  border-right: 1px solid var(--line-light);
  background: rgba(245, 248, 252, 0.68);
  transition: background 220ms ease, transform 220ms ease, box-shadow 220ms ease;
}

.system-card:first-child {
  border-left: 1px solid var(--line-light);
}

.system-card:hover {
  z-index: 2;
  background: var(--white);
  transform: translateY(-6px);
  box-shadow: 0 24px 70px rgba(12, 31, 63, 0.11);
}

.system-card.featured {
  background: #eef4ff;
}

.card-index {
  color: #91a2ba;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
}

.card-icon {
  width: 53px;
  height: 53px;
  margin: 47px 0 42px;
  border: 1px solid rgba(37, 119, 255, 0.28);
  display: grid;
  place-items: center;
  color: var(--blue);
}

.card-icon svg {
  width: 27px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.15;
  stroke-linecap: square;
  stroke-linejoin: miter;
}

.card-category {
  margin-bottom: 8px;
  color: #637590;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.system-card h3 {
  margin-bottom: 20px;
  font-size: 2rem;
  font-weight: 600;
  letter-spacing: -0.04em;
}

.system-card > p:not(.card-category) {
  max-width: 320px;
  color: #566780;
  font-size: 0.94rem;
  line-height: 1.7;
}

.card-footer {
  position: absolute;
  inset: auto 34px 30px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.card-footer .status {
  color: #74849a;
}

.card-footer .status-live {
  color: #006966;
}

.card-footer a {
  color: #075ac7;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.card-footer a span,
.text-link span {
  display: inline-block;
  margin-left: 4px;
  transition: transform 180ms ease;
}

.card-footer a:hover span,
.text-link:hover span {
  transform: translate(3px, -3px);
}

.qubit-scroll-section {
  position: relative;
  min-height: 2850px;
  padding: 0 0 150px;
  overflow: clip;
  background:
    radial-gradient(circle at 28% 34%, rgba(50, 104, 255, 0.15), transparent 31%),
    radial-gradient(circle at 13% 62%, rgba(38, 213, 207, 0.07), transparent 26%),
    #01010d;
  color: var(--white);
}

.qubit-scroll-section::before,
.qubit-scroll-section::after {
  content: "";
  position: absolute;
  pointer-events: none;
  border: 1px solid rgba(76, 145, 255, 0.12);
  border-radius: 50%;
}

.qubit-scroll-section::before {
  width: 780px;
  height: 780px;
  left: -430px;
  top: 16%;
}

.qubit-scroll-section::after {
  width: 520px;
  height: 520px;
  right: -350px;
  bottom: 11%;
  border-style: dashed;
}

.qubit-field {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(128, 158, 201, 0.042) 1px, transparent 1px),
    linear-gradient(90deg, rgba(128, 158, 201, 0.042) 1px, transparent 1px);
  background-size: 70px 70px;
  mask-image: linear-gradient(to bottom, transparent 0, #000 7%, #000 93%, transparent 100%);
}

.qubit-scroll-layout {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(500px, 1.12fr) minmax(390px, 0.88fr);
  gap: clamp(70px, 8vw, 120px);
  align-items: stretch;
}

.qubit-visual-column {
  position: relative;
  min-height: 100%;
}

.qubit-visual {
  position: sticky;
  top: 92px;
  height: calc(100vh - 124px);
  min-height: 630px;
  max-height: 850px;
  border: 1px solid rgba(126, 164, 219, 0.2);
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 46%, rgba(37, 119, 255, 0.13), transparent 31%),
    linear-gradient(145deg, rgba(7, 18, 38, 0.88), rgba(2, 6, 17, 0.98));
  box-shadow: 0 48px 130px rgba(0, 0, 0, 0.42), inset 0 1px rgba(255, 255, 255, 0.025);
}

.qubit-visual::before {
  content: "";
  position: absolute;
  inset: 58px 0 auto;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(38, 213, 207, 0.3), transparent);
}

.qubit-visual-top {
  position: relative;
  z-index: 3;
  height: 58px;
  padding: 0 20px;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: #71839d;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.11em;
  text-transform: uppercase;
}

.qubit-visual-top > span:first-child {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: #9eb0c8;
}

.qubit-visual-top i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 14px rgba(38, 213, 207, 0.7);
}

#qubit-canvas {
  position: absolute;
  inset: 58px 0 142px;
  width: 100%;
  height: calc(100% - 200px);
  display: block;
  touch-action: pan-y;
}

.qubit-ket {
  position: absolute;
  z-index: 3;
  top: 83px;
  left: 24px;
}

.qubit-ket span,
.qubit-ket strong {
  display: block;
}

.qubit-ket span {
  color: #62748e;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.qubit-ket strong {
  margin-top: 5px;
  color: var(--cyan);
  font-family: var(--serif);
  font-size: 1.45rem;
  font-weight: 400;
  text-shadow: 0 0 18px rgba(38, 213, 207, 0.28);
}

.qubit-equation {
  position: absolute;
  z-index: 3;
  left: 24px;
  right: 24px;
  bottom: 152px;
  color: #788ba5;
  font-family: var(--serif);
  font-size: 0.86rem;
  letter-spacing: 0.02em;
  text-align: center;
}

.qubit-equation span,
.qubit-equation sup {
  color: #9fbfff;
}

.qubit-readout {
  position: absolute;
  z-index: 3;
  inset: auto 0 0;
  min-height: 136px;
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: 0.55fr 0.55fr 1fr 1fr;
  background: rgba(2, 7, 18, 0.92);
}

.qubit-readout > div {
  position: relative;
  padding: 24px 18px;
  border-right: 1px solid var(--line);
}

.qubit-readout > div:last-child {
  border-right: 0;
}

.qubit-readout span,
.qubit-readout strong {
  display: block;
}

.qubit-readout span {
  color: #647791;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.qubit-readout strong {
  margin-top: 7px;
  color: #c5d1e1;
  font-size: 0.86rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.qubit-readout .probability i {
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 24px;
  height: 2px;
  overflow: hidden;
  background: rgba(130, 161, 203, 0.13);
}

.qubit-readout .probability b {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--blue), var(--cyan));
  box-shadow: 0 0 12px rgba(38, 213, 207, 0.45);
  transition: width 120ms linear;
}

.qubit-narrative {
  padding-top: 150px;
}

.qubit-intro {
  min-height: 560px;
  padding: 10vh 0 100px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.qubit-intro h2 {
  max-width: 580px;
  margin-bottom: 32px;
}

.qubit-intro > p:last-child {
  max-width: 560px;
  color: #93a2b8;
  font-size: 1.03rem;
  line-height: 1.8;
}

.qubit-step {
  min-height: 570px;
  padding: 18vh 0 12vh;
  border-top: 1px solid rgba(133, 165, 208, 0.14);
  display: grid;
  grid-template-columns: 42px 1fr;
  gap: 28px;
  align-content: center;
  opacity: 0.28;
  transform: translateX(22px);
  transition: opacity 420ms ease, transform 420ms ease, border-color 420ms ease;
}

.qubit-step.active {
  border-color: rgba(38, 213, 207, 0.42);
  opacity: 1;
  transform: translateX(0);
}

.step-number {
  padding-top: 9px;
  color: var(--blue-bright);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.09em;
}

.step-ket {
  margin-bottom: 14px;
  color: var(--cyan);
  font-family: var(--serif);
  font-size: 0.95rem;
  letter-spacing: 0.025em;
}

.qubit-step h3 {
  max-width: 520px;
  margin-bottom: 18px;
  font-size: clamp(2rem, 3.1vw, 3.25rem);
  font-weight: 520;
  letter-spacing: -0.045em;
  line-height: 1.08;
}

.qubit-step div > p:last-child {
  max-width: 500px;
  color: #8191a8;
  line-height: 1.75;
}

.capital-card {
  margin: 40px 0 100px;
  padding: 42px;
  border: 1px solid rgba(38, 213, 207, 0.28);
  background:
    linear-gradient(135deg, rgba(38, 213, 207, 0.09), transparent 43%),
    rgba(8, 19, 38, 0.74);
  box-shadow: 0 32px 90px rgba(0, 0, 0, 0.28);
}

.capital-card h3 {
  max-width: 520px;
  margin: 24px 0 17px;
  font-size: clamp(1.8rem, 2.7vw, 2.75rem);
  font-weight: 550;
  letter-spacing: -0.04em;
  line-height: 1.12;
}

.capital-card > p {
  max-width: 530px;
  margin-bottom: 28px;
  color: #92a2b9;
  line-height: 1.75;
}

.capital-card .button {
  width: fit-content;
}

.qubit-disclosure {
  max-width: 560px;
  margin: 0;
  color: #596b84;
  font-size: 0.75rem;
  line-height: 1.65;
}

.catalyst-section {
  background: var(--ink);
}

.catalyst-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(70px, 10vw, 145px);
  align-items: start;
}

.catalyst-copy {
  position: sticky;
  top: 125px;
}

.catalyst-copy h2 {
  max-width: 560px;
  margin-bottom: 36px;
}

.catalyst-copy p:not(.kicker) {
  max-width: 610px;
  color: #8292a9;
  line-height: 1.8;
}

.catalyst-copy .large-copy {
  color: #c2ccd9 !important;
  font-size: 1.04rem;
}

.text-link {
  display: inline-flex;
  align-items: center;
  margin-top: 18px;
  padding-bottom: 6px;
  border-bottom: 1px solid rgba(76, 145, 255, 0.6);
  color: #78aaff;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.claim-panel {
  border: 1px solid rgba(128, 158, 198, 0.2);
  background: #07101e;
  box-shadow: 0 35px 90px rgba(0, 0, 0, 0.28);
}

.claim-header {
  min-height: 100px;
  padding: 24px 26px;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.mini-label {
  display: block;
  margin-bottom: 5px;
  color: #60718a;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.claim-header h3 {
  margin: 0;
  font-size: 1.28rem;
  font-weight: 600;
  letter-spacing: -0.025em;
}

.claim-statement {
  padding: 27px 26px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(90deg, rgba(37, 119, 255, 0.09), transparent);
}

.claim-statement > span {
  color: #70819a;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.13em;
}

.claim-statement p {
  max-width: 520px;
  margin: 9px 0 0;
  color: #d2dae6;
  font-size: 1.05rem;
  line-height: 1.6;
}

.claim-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-bottom: 1px solid var(--line);
}

.claim-grid > div {
  padding: 18px 26px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.claim-grid > div:nth-child(even) {
  border-right: 0;
}

.claim-grid > div:nth-child(n + 3) {
  border-bottom: 0;
}

.claim-grid span,
.claim-grid strong {
  display: block;
}

.claim-grid span {
  color: #64758d;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
}

.claim-grid strong {
  margin-top: 3px;
  color: #c4cfdd;
  font-size: 0.82rem;
  font-weight: 600;
}

.timeline {
  position: relative;
  padding: 26px 27px 16px;
}

.timeline-line {
  position: absolute;
  left: 45px;
  top: 44px;
  bottom: 43px;
  width: 1px;
  background: rgba(76, 145, 255, 0.23);
}

.timeline-line i {
  display: block;
  width: 1px;
  height: 38%;
  background: linear-gradient(var(--cyan), transparent);
}

.timeline-row {
  position: relative;
  z-index: 1;
  min-height: 82px;
  display: grid;
  grid-template-columns: 38px 1fr 24px;
  gap: 17px;
  align-items: start;
}

.timeline-row time {
  width: 36px;
  height: 36px;
  border: 1px solid rgba(76, 145, 255, 0.25);
  background: #07101e;
  display: grid;
  place-items: center;
  color: #7894bd;
  font-family: var(--serif);
  font-size: 0.77rem;
}

.timeline-row.active time {
  border-color: rgba(38, 213, 207, 0.55);
  color: var(--cyan);
  box-shadow: 0 0 20px rgba(38, 213, 207, 0.1);
}

.timeline-row p {
  margin-top: 1px;
}

.timeline-row strong,
.timeline-row span {
  display: block;
}

.timeline-row strong {
  color: #c7d1df;
  font-size: 0.79rem;
  font-weight: 600;
}

.timeline-row span {
  margin-top: 3px;
  color: #61728a;
  font-size: 0.75rem;
}

.timeline-row b {
  padding-top: 2px;
  color: #3e4e64;
  font-size: 0.75rem;
  font-weight: 600;
}

.panel-footnote {
  padding: 14px 26px;
  border-top: 1px solid var(--line);
  color: #526278;
  font-size: 0.75rem;
}

.pilot-band {
  margin-top: 92px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.pilot-band > div {
  min-height: 116px;
  padding: 25px 28px;
  border-right: 1px solid var(--line);
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 14px;
}

.pilot-band > div:last-child {
  border-right: 0;
}

.pilot-band > div > span {
  color: var(--blue-bright);
  font-size: 0.75rem;
  font-weight: 700;
}

.pilot-band p {
  margin: 0;
  color: #687a92;
  font-size: 0.78rem;
  line-height: 1.55;
}

.pilot-band strong {
  display: block;
  margin-bottom: 4px;
  color: #bec9d8;
  font-size: 0.86rem;
  font-weight: 600;
}

.method-section {
  position: relative;
  background: #eaf0f8;
  color: #061127;
}

.method-layout {
  display: grid;
  grid-template-columns: 0.78fr 1.22fr;
  gap: clamp(70px, 10vw, 150px);
  align-items: start;
}

.method-intro {
  position: sticky;
  top: 120px;
}

.method-intro h2 {
  margin-bottom: 31px;
}

.method-intro > p:last-child {
  max-width: 480px;
  color: #5a6a80;
  line-height: 1.8;
}

.method-list {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: method;
  border-top: 1px solid var(--line-light);
}

.method-list li {
  min-height: 123px;
  padding: 27px 0;
  border-bottom: 1px solid var(--line-light);
  display: grid;
  grid-template-columns: 58px 1fr;
  gap: 22px;
  transition: padding-left 180ms ease, background 180ms ease;
}

.method-list li:hover {
  padding-left: 16px;
  background: rgba(255, 255, 255, 0.42);
}

.method-list li > span {
  padding-top: 5px;
  color: var(--blue);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.09em;
}

.method-list h3 {
  margin: 0 0 6px;
  font-size: 1.18rem;
  font-weight: 650;
  letter-spacing: -0.02em;
}

.method-list p {
  max-width: 540px;
  margin: 0;
  color: #627289;
  font-size: 0.89rem;
}

.principle-section {
  position: relative;
  padding: 120px 0 125px;
  overflow: hidden;
  background: #06152b;
}

.principle-section::before {
  content: "";
  position: absolute;
  width: 660px;
  height: 660px;
  right: -240px;
  top: -300px;
  border: 1px solid rgba(38, 213, 207, 0.11);
  border-radius: 50%;
  box-shadow: 0 0 0 95px rgba(37, 119, 255, 0.025), 0 0 0 190px rgba(37, 119, 255, 0.018);
}

.principle {
  position: relative;
  display: grid;
  grid-template-columns: 130px minmax(0, 900px);
  gap: 60px;
  align-items: start;
}

.principle-mark {
  width: 116px;
  height: 116px;
  border: 1px solid rgba(76, 145, 255, 0.34);
  display: grid;
  place-items: center;
  color: var(--cyan);
  font-family: var(--serif);
  font-size: 2.1rem;
  box-shadow: inset 0 0 30px rgba(37, 119, 255, 0.05);
}

.principle blockquote {
  margin: 0;
  font-size: clamp(2rem, 4vw, 4.2rem);
  font-weight: 430;
  letter-spacing: -0.05em;
  line-height: 1.12;
}

.principle-line {
  position: absolute;
  left: 190px;
  bottom: -48px;
  width: 90px;
  height: 1px;
  background: var(--cyan);
}

.company-section {
  background: var(--paper);
  color: #061127;
}

.company-layout {
  display: grid;
  grid-template-columns: 1fr 0.83fr;
  gap: clamp(80px, 11vw, 165px);
  align-items: end;
}

.company-copy h2 {
  max-width: 680px;
  margin-bottom: 35px;
}

.company-copy > p:last-child {
  max-width: 650px;
  color: #586980;
  font-size: 1.02rem;
  line-height: 1.8;
}

.founder-card {
  position: relative;
  padding: 42px;
  border: 1px solid var(--line-light);
  background: #edf3fb;
}

.founder-card::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 42px;
  height: 2px;
  background: var(--blue);
}

.founder-monogram {
  width: 54px;
  height: 54px;
  margin-bottom: 45px;
  border: 1px solid rgba(37, 119, 255, 0.35);
  display: grid;
  place-items: center;
  color: var(--blue);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.founder-card h3 {
  margin-bottom: 16px;
  font-size: 1.55rem;
  font-weight: 620;
  letter-spacing: -0.035em;
}

.founder-card p:not(.mini-label) {
  color: #5b6c83;
  font-size: 0.88rem;
  line-height: 1.75;
}

.founder-card .text-link {
  color: #075ac7;
}

.closing-section {
  position: relative;
  padding: 132px 0;
  overflow: hidden;
  background: var(--blue);
  color: var(--white);
}

.closing-section::before {
  content: "";
  position: absolute;
  width: 540px;
  height: 540px;
  right: -90px;
  bottom: -320px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 50%;
  box-shadow: 0 0 0 80px rgba(255, 255, 255, 0.035), 0 0 0 160px rgba(255, 255, 255, 0.02);
}

.closing-grid {
  opacity: 0.42;
  mask-image: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.08) 1px, transparent 1px);
}

.closing-content {
  position: relative;
  z-index: 1;
}

.closing-content .kicker {
  color: rgba(255, 255, 255, 0.68);
}

.closing-content h2 {
  max-width: 780px;
  margin-bottom: 30px;
}

.closing-content > p:not(.kicker) {
  max-width: 650px;
  margin-bottom: 38px;
  color: rgba(255, 255, 255, 0.76);
  font-size: 1.03rem;
  line-height: 1.75;
}

.button-light {
  background: var(--white);
  color: #0d49aa;
}

.button-light:hover {
  background: #edf4ff;
}

.button-ghost {
  border-color: rgba(255, 255, 255, 0.38);
  color: var(--white);
}

.button-ghost:hover {
  border-color: var(--white);
  background: rgba(255, 255, 255, 0.08);
}

.site-footer {
  padding: 54px 0 38px;
  background: #02050c;
  color: #7a8ba3;
}

.footer-top {
  padding-bottom: 38px;
  border-bottom: 1px solid var(--line);
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 55px;
  align-items: center;
}

.footer-top > p {
  margin: 0;
  font-size: 0.78rem;
}

.back-top {
  color: #a6b4c7;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.back-top span {
  display: inline-block;
  margin-left: 7px;
  color: var(--blue-bright);
  transition: transform 180ms ease;
}

.back-top:hover span {
  transform: translateY(-3px);
}

.footer-legal {
  padding-top: 31px;
}

.footer-legal > p {
  max-width: 1020px;
  margin-bottom: 28px;
  color: #7c8ba0;
  font-size: 0.75rem;
  line-height: 1.75;
}

.footer-legal > div {
  display: flex;
  justify-content: space-between;
  gap: 30px;
  color: #7c8ba0;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.js [data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 700ms cubic-bezier(0.2, 0.7, 0.2, 1), transform 700ms cubic-bezier(0.2, 0.7, 0.2, 1);
}

.js [data-reveal][data-delay="1"] {
  transition-delay: 120ms;
}

.js [data-reveal].visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1040px) {
  :root {
    --shell: min(100% - 40px, 900px);
  }

  .site-nav {
    gap: 18px;
  }

  .site-nav > a:not(.nav-cta) {
    display: none;
  }

  .hero {
    padding-top: 155px;
  }

  .hero-layout {
    grid-template-columns: 1fr;
    gap: 66px;
  }

  .hero-copy {
    max-width: 760px;
  }

  .signal-window {
    max-width: 690px;
    margin-left: auto;
  }

  .trust-row {
    margin-top: 85px;
    grid-template-columns: repeat(3, 1fr);
  }

  .trust-row > span {
    display: none;
  }

  .system-map {
    grid-template-columns: 1fr;
  }

  .system-card {
    min-height: 350px;
    border-left: 1px solid var(--line-light);
    border-bottom: 1px solid var(--line-light);
  }

  .system-card:last-child {
    border-bottom: 0;
  }

  .card-icon {
    margin: 32px 0 27px;
  }

  .catalyst-layout,
  .method-layout,
  .company-layout {
    grid-template-columns: 1fr;
    gap: 72px;
  }

  .catalyst-copy,
  .method-intro {
    position: static;
  }

  .catalyst-copy h2,
  .method-intro h2,
  .company-copy h2 {
    max-width: 760px;
  }

  .claim-panel {
    max-width: 760px;
    margin-left: auto;
  }

  .founder-card {
    max-width: 650px;
    margin-left: auto;
  }
}

@media (max-width: 740px) {
  :root {
    --shell: calc(100% - 32px);
  }

  html {
    scroll-padding-top: 72px;
  }

  .site-header,
  .site-header.scrolled {
    height: 66px;
  }

  .js .menu-toggle {
    display: block;
  }

  .menu-toggle[aria-expanded="true"] > span:nth-child(2) {
    transform: translateY(3.5px) rotate(45deg);
  }

  .menu-toggle[aria-expanded="true"] > span:nth-child(3) {
    transform: translateY(-3.5px) rotate(-45deg);
  }

  .js .site-nav {
    position: fixed;
    inset: 66px 0 auto;
    padding: 18px 16px 28px;
    border-bottom: 1px solid var(--line);
    background: rgba(3, 7, 18, 0.98);
    display: grid;
    gap: 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-12px);
    transition: opacity 180ms ease, transform 180ms ease, visibility 180ms ease;
  }

  .js .site-nav.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .js .site-nav > a:not(.nav-cta) {
    display: block;
    padding: 17px 4px;
    border-bottom: 1px solid var(--line);
  }

  .site-nav > a:not(.nav-cta)::after {
    display: none;
  }

  .nav-cta {
    justify-content: center;
    margin-top: 18px;
  }

  .hero {
    min-height: auto;
    padding-top: 128px;
  }

  .hero::before {
    left: 16px;
  }

  .hero-orbit {
    opacity: 0.5;
  }

  .orbit-one {
    right: -500px;
  }

  .orbit-two {
    right: -360px;
  }

  .hero-layout {
    gap: 52px;
  }

  h1 {
    font-size: clamp(3.35rem, 16vw, 5rem);
    line-height: 0.96;
  }

  .hero-lede {
    font-size: 1.02rem;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .signal-window {
    margin-left: 0;
  }

  .signal-node {
    padding-right: 18px;
  }

  .signal-node .status {
    position: static;
    margin-top: 11px;
  }

  .evidence-strip {
    grid-template-columns: 1fr;
  }

  .evidence-strip > div {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .evidence-strip > div:last-child {
    border-bottom: 0;
  }

  .trust-row {
    min-height: 0;
    padding: 23px 0;
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .section {
    padding: 100px 0;
  }

  .section-heading {
    grid-template-columns: 1fr;
    gap: 27px;
    margin-bottom: 52px;
  }

  .section-heading .kicker {
    grid-column: auto;
    margin-bottom: 0;
  }

  h2 {
    font-size: clamp(2.55rem, 12vw, 3.5rem);
  }

  .system-card {
    min-height: 390px;
    padding: 28px 25px;
  }

  .card-footer {
    inset: auto 25px 28px;
    align-items: flex-start;
  }

  .claim-header {
    align-items: flex-start;
    flex-direction: column;
  }

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

  .claim-grid > div,
  .claim-grid > div:nth-child(even),
  .claim-grid > div:nth-child(n + 3) {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .claim-grid > div:last-child {
    border-bottom: 0;
  }

  .pilot-band {
    grid-template-columns: 1fr;
    margin-top: 62px;
  }

  .pilot-band > div {
    min-height: 104px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .pilot-band > div:last-child {
    border-bottom: 0;
  }

  .method-list li {
    grid-template-columns: 40px 1fr;
    gap: 13px;
  }

  .principle-section {
    padding: 92px 0 100px;
  }

  .principle {
    grid-template-columns: 1fr;
    gap: 42px;
  }

  .principle-mark {
    width: 84px;
    height: 84px;
    font-size: 1.5rem;
  }

  .principle-line {
    display: none;
  }

  .founder-card {
    padding: 31px 26px;
  }

  .closing-section {
    padding: 100px 0;
  }

  .footer-top {
    grid-template-columns: 1fr auto;
    gap: 25px;
  }

  .footer-top > p {
    grid-column: 1 / -1;
    grid-row: 2;
  }

  .footer-legal > div {
    flex-direction: column;
    gap: 8px;
  }
}

@media (max-width: 1040px) {
  .qubit-scroll-section {
    min-height: 2750px;
  }

  .qubit-scroll-layout {
    grid-template-columns: minmax(0, 0.98fr) minmax(0, 1.02fr);
    gap: 42px;
  }

  .qubit-visual {
    min-height: 590px;
  }

  .qubit-readout {
    grid-template-columns: repeat(2, 1fr);
  }

  .qubit-readout > div {
    padding: 16px 15px;
  }

  .qubit-readout > div:nth-child(2) {
    border-right: 0;
  }

  .qubit-readout > div:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line);
  }

  .qubit-readout .probability i {
    bottom: 14px;
  }

  .qubit-intro,
  .qubit-step {
    min-height: 540px;
  }
}

@media (max-width: 740px) {
  .qubit-scroll-section {
    min-height: auto;
    padding-bottom: 95px;
  }

  .qubit-scroll-layout {
    width: 100%;
    display: block;
  }

  .qubit-visual-column {
    position: sticky;
    z-index: 1;
    top: 66px;
    width: 100%;
    height: calc(100svh - 66px);
    min-height: 530px;
  }

  .qubit-visual {
    position: relative;
    top: auto;
    height: 100%;
    min-height: 0;
    max-height: none;
    border-right: 0;
    border-left: 0;
  }

  .qubit-visual-top {
    padding-inline: 16px;
  }

  .qubit-visual-top > span:last-child {
    display: none;
  }

  #qubit-canvas {
    inset: 58px 0 154px;
    height: calc(100% - 212px);
  }

  .qubit-ket {
    top: 77px;
    left: 16px;
  }

  .qubit-equation {
    display: none;
  }

  .qubit-readout {
    min-height: 154px;
  }

  .qubit-readout > div {
    min-height: 77px;
  }

  .qubit-narrative {
    position: relative;
    z-index: 2;
    padding: 0 16px;
  }

  .qubit-intro,
  .qubit-step {
    min-height: 100svh;
    margin: 0 -16px;
    padding: 55svh 24px 12svh;
    background: linear-gradient(to bottom, transparent 0, rgba(1, 1, 13, 0.86) 45%, #01010d 75%);
  }

  .qubit-intro {
    justify-content: flex-end;
  }

  .qubit-step {
    grid-template-columns: 32px 1fr;
    gap: 14px;
    align-content: end;
    transform: none;
  }

  .qubit-step h3 {
    font-size: clamp(2rem, 10vw, 2.75rem);
  }

  .capital-card {
    position: relative;
    z-index: 3;
    margin: 0;
    padding: 32px 24px;
    background: #081326;
  }

  .capital-card .button {
    width: 100%;
  }

  .qubit-disclosure {
    position: relative;
    z-index: 3;
    padding: 24px 4px 0;
    background: #01010d;
  }
}

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

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

  .js [data-reveal] {
    opacity: 1;
    transform: none;
  }

  .qubit-step {
    opacity: 1;
    transform: none;
  }
}