:root {
  --ink: #f7f8ff;
  --muted: #aeb7ca;
  --dim: #78849d;
  --canvas: #070a13;
  --canvas-soft: #0b1020;
  --panel: rgba(18, 25, 45, 0.78);
  --panel-strong: #12182a;
  --line: rgba(255, 255, 255, 0.11);
  --line-strong: rgba(255, 255, 255, 0.2);
  --cyan: #6df4ff;
  --magenta: #ff58d6;
  --violet: #a783ff;
  --amber: #ffce70;
  --rose: #ff8daf;
  --lime: #c7ff6f;
  --radius-sm: 14px;
  --radius: 24px;
  --radius-lg: 36px;
  --shadow: 0 34px 90px rgba(0, 0, 0, 0.38);
  --shell: min(1200px, calc(100% - 48px));
  color-scheme: dark;
}

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

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

body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  color: var(--ink);
  background:
    radial-gradient(circle at 16% -8%, rgba(75, 93, 220, 0.22), transparent 34rem),
    radial-gradient(circle at 92% 26%, rgba(255, 54, 190, 0.09), transparent 32rem),
    var(--canvas);
  font-family:
    Inter, Aptos, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  content: "";
  opacity: 0.14;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.84' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.22'/%3E%3C/svg%3E");
}

img,
svg {
  display: block;
  max-width: 100%;
}

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

button,
input,
textarea,
select {
  font: inherit;
}

button {
  color: inherit;
}

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

h1,
h2,
h3 {
  font-family:
    "Arial Narrow", "Aptos Display", "Segoe UI", sans-serif;
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.02;
}

h1 {
  margin-bottom: 26px;
  max-width: 870px;
  font-size: clamp(3.35rem, 7vw, 6.75rem);
  text-wrap: balance;
}

h2 {
  margin-bottom: 22px;
  font-size: clamp(2.25rem, 4.4vw, 4.25rem);
  text-wrap: balance;
}

h3 {
  margin-bottom: 12px;
  font-size: 1.45rem;
}

::selection {
  color: #05080f;
  background: var(--cyan);
}

:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: 4px;
}

.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;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 1000;
  padding: 11px 16px;
  color: #071019;
  background: var(--cyan);
  border-radius: 10px;
  font-weight: 800;
  transform: translateY(-150%);
  transition: transform 180ms ease;
}

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

.site-header {
  position: relative;
  z-index: 50;
  padding: 18px 0 0;
}

.header-shell {
  width: var(--shell);
  min-height: 72px;
  margin: 0 auto;
  padding: 10px 12px 10px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  background: rgba(8, 12, 23, 0.78);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.25);
  backdrop-filter: blur(18px);
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

.wordmark-mark {
  position: relative;
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(109, 244, 255, 0.42);
  border-radius: 50%;
  box-shadow: inset 0 0 20px rgba(109, 244, 255, 0.16);
}

.wordmark-mark::before {
  position: absolute;
  width: 4px;
  height: 4px;
  content: "";
  background: white;
  border-radius: 50%;
  box-shadow: 0 0 14px 4px rgba(109, 244, 255, 0.72);
}

.wordmark-mark i {
  position: absolute;
  width: 22px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan), transparent);
}

.wordmark-mark i:nth-child(2) {
  transform: rotate(60deg);
}

.wordmark-mark i:nth-child(3) {
  transform: rotate(-60deg);
}

.wordmark-name {
  font-family: "Arial Narrow", "Aptos Display", "Segoe UI", sans-serif;
  font-size: 1.5rem;
  font-weight: 900;
  letter-spacing: -0.05em;
}

.wordmark-place {
  padding-left: 10px;
  color: var(--dim);
  border-left: 1px solid var(--line-strong);
  font-size: 0.73rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(12px, 2vw, 28px);
}

.site-nav > a {
  position: relative;
  color: #c7cede;
  font-size: 0.86rem;
  font-weight: 700;
  white-space: nowrap;
}

.site-nav > a:not(.nav-cta)::after {
  position: absolute;
  right: 0;
  bottom: -7px;
  left: 0;
  height: 1px;
  content: "";
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 180ms ease;
}

.site-nav > a:hover,
.site-nav > a[aria-current="page"] {
  color: white;
}

.site-nav > a:hover::after,
.site-nav > a[aria-current="page"]::after {
  transform: scaleX(1);
  transform-origin: left;
}

.site-nav .nav-cta {
  padding: 12px 17px;
  color: #081018;
  background: var(--cyan);
  border: 1px solid var(--cyan);
  border-radius: 11px;
  box-shadow: 0 0 30px rgba(109, 244, 255, 0.12);
}

.site-nav .nav-cta:hover {
  color: #081018;
  background: #a8f9ff;
}

.menu-toggle {
  width: 45px;
  height: 45px;
  padding: 0;
  display: none;
  place-items: center;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 12px;
}

.menu-toggle svg {
  width: 22px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-width: 1.8;
}

.menu-close {
  display: none;
}

.hero {
  width: var(--shell);
  min-height: 720px;
  margin: 0 auto;
  padding: clamp(72px, 10vw, 128px) 0 96px;
  display: grid;
  grid-template-columns: minmax(0, 1.18fr) minmax(360px, 0.82fr);
  align-items: center;
  gap: clamp(46px, 7vw, 100px);
}

.detail-page .hero {
  min-height: 670px;
}

.hero-copy {
  position: relative;
  z-index: 2;
}

.eyebrow {
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 11px;
  color: var(--cyan);
  font-size: 0.73rem;
  font-weight: 850;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.eyebrow > span {
  width: 24px;
  height: 1px;
  flex: 0 0 auto;
  background: currentColor;
  box-shadow: 8px 0 15px currentColor;
}

.hero-intro {
  max-width: 700px;
  margin-bottom: 34px;
  color: #bac3d5;
  font-size: clamp(1.08rem, 1.8vw, 1.32rem);
  line-height: 1.62;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}

.button {
  min-height: 52px;
  padding: 14px 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  font-size: 0.9rem;
  font-weight: 800;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease;
}

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

.button svg,
.card-link svg,
.status-band a svg,
.scenario-list a svg {
  width: 19px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.7;
}

.button-primary {
  color: #061017;
  background: var(--cyan);
  border-color: var(--cyan);
  box-shadow: 0 16px 44px rgba(82, 231, 247, 0.15);
}

.button-primary:hover {
  background: #a4f9ff;
}

.button-ghost {
  color: #dfe4ef;
  background: rgba(255, 255, 255, 0.025);
}

.button-ghost:hover {
  border-color: rgba(255, 255, 255, 0.42);
  background: rgba(255, 255, 255, 0.06);
}

.hero-proof {
  margin-top: 44px;
  padding-top: 25px;
  display: flex;
  gap: clamp(22px, 3vw, 40px);
  color: var(--dim);
  border-top: 1px solid var(--line);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.hero-proof b {
  margin-right: 5px;
  color: white;
  font-size: 1rem;
}

.breadcrumbs {
  margin-bottom: 22px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--dim);
  font-size: 0.78rem;
}

.breadcrumbs a:hover {
  color: var(--cyan);
}

.hero-stage {
  position: relative;
  isolation: isolate;
  aspect-ratio: 0.88;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 46%, rgba(109, 244, 255, 0.15), transparent 24%),
    linear-gradient(145deg, rgba(21, 28, 51, 0.88), rgba(8, 12, 24, 0.48));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.hero-stage::before {
  position: absolute;
  inset: 0;
  z-index: -1;
  content: "";
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.06), transparent 28%),
    radial-gradient(circle at 50% 100%, rgba(103, 88, 255, 0.18), transparent 42%);
}

.stage-grid {
  position: absolute;
  inset: 54% -32% -36%;
  opacity: 0.35;
  background-image:
    linear-gradient(rgba(109, 244, 255, 0.28) 1px, transparent 1px),
    linear-gradient(90deg, rgba(109, 244, 255, 0.28) 1px, transparent 1px);
  background-size: 34px 34px;
  transform: perspective(300px) rotateX(58deg);
  transform-origin: top;
  mask-image: linear-gradient(to bottom, transparent, black 28%, black);
}

.beam {
  position: absolute;
  top: -15%;
  left: 50%;
  width: 120px;
  height: 78%;
  opacity: 0.44;
  background: linear-gradient(to bottom, rgba(109, 244, 255, 0.56), transparent);
  filter: blur(12px);
  clip-path: polygon(48% 0, 52% 0, 100% 100%, 0 100%);
  transform-origin: top;
  animation: beam-drift 8s ease-in-out infinite alternate;
}

.beam-one {
  transform: translateX(-50%) rotate(-24deg);
}

.beam-two {
  opacity: 0.25;
  transform: translateX(-50%) rotate(4deg);
  animation-delay: -3s;
}

.beam-three {
  opacity: 0.34;
  transform: translateX(-50%) rotate(26deg);
  animation-delay: -5s;
}

.accent-magenta .beam,
.accent-rose .beam {
  background: linear-gradient(to bottom, rgba(255, 88, 214, 0.62), transparent);
}

.accent-violet .beam {
  background: linear-gradient(to bottom, rgba(167, 131, 255, 0.66), transparent);
}

.accent-amber .beam {
  background: linear-gradient(to bottom, rgba(255, 206, 112, 0.58), transparent);
}

.accent-lime .beam {
  background: linear-gradient(to bottom, rgba(199, 255, 111, 0.55), transparent);
}

.accent-gradient .beam-two {
  background: linear-gradient(to bottom, rgba(255, 88, 214, 0.64), transparent);
}

.accent-gradient .beam-three {
  background: linear-gradient(to bottom, rgba(167, 131, 255, 0.64), transparent);
}

.stage-icon {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 43%;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  background: rgba(7, 11, 22, 0.72);
  border: 1px solid rgba(109, 244, 255, 0.35);
  border-radius: 50%;
  box-shadow:
    0 0 0 18px rgba(109, 244, 255, 0.035),
    0 0 0 40px rgba(109, 244, 255, 0.02),
    0 0 90px rgba(109, 244, 255, 0.22);
  transform: translate(-50%, -50%);
}

.accent-magenta .stage-icon,
.accent-rose .stage-icon {
  border-color: rgba(255, 88, 214, 0.42);
  box-shadow:
    0 0 0 18px rgba(255, 88, 214, 0.035),
    0 0 0 40px rgba(255, 88, 214, 0.02),
    0 0 90px rgba(255, 88, 214, 0.2);
}

.accent-violet .stage-icon {
  border-color: rgba(167, 131, 255, 0.42);
}

.accent-amber .stage-icon {
  border-color: rgba(255, 206, 112, 0.42);
}

.accent-lime .stage-icon {
  border-color: rgba(199, 255, 111, 0.42);
}

.stage-icon-svg {
  width: 48%;
  fill: none;
  stroke: var(--cyan);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.1;
  filter: drop-shadow(0 0 12px rgba(109, 244, 255, 0.55));
}

.accent-magenta .stage-icon-svg,
.accent-rose .stage-icon-svg {
  stroke: var(--magenta);
  filter: drop-shadow(0 0 12px rgba(255, 88, 214, 0.5));
}

.accent-violet .stage-icon-svg {
  stroke: var(--violet);
}

.accent-amber .stage-icon-svg {
  stroke: var(--amber);
}

.accent-lime .stage-icon-svg {
  stroke: var(--lime);
}

.stage-dot {
  position: absolute;
  width: 5px;
  height: 5px;
  background: white;
  border-radius: 50%;
  box-shadow: 0 0 16px 5px rgba(109, 244, 255, 0.5);
  animation: pulse 3s ease-in-out infinite;
}

.dot-one {
  top: 18%;
  left: 17%;
}

.dot-two {
  top: 31%;
  right: 13%;
  animation-delay: -1s;
}

.dot-three {
  right: 25%;
  bottom: 17%;
  animation-delay: -2s;
}

.stage-caption {
  position: absolute;
  right: 28px;
  bottom: 24px;
  left: 28px;
  display: flex;
  align-items: center;
  gap: 11px;
  color: rgba(255, 255, 255, 0.58);
  font-size: 0.65rem;
  font-weight: 850;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.stage-caption span {
  height: 1px;
  flex: 1;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.32));
}

@keyframes beam-drift {
  to {
    transform: translateX(-50%) rotate(18deg);
  }
}

@keyframes pulse {
  50% {
    opacity: 0.35;
    transform: scale(0.7);
  }
}

.status-band {
  width: var(--shell);
  margin: 0 auto 28px;
  padding: 18px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  background: rgba(13, 20, 37, 0.86);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
}

.status-band > div {
  display: grid;
  grid-template-columns: auto auto 1fr;
  align-items: center;
  gap: 10px;
}

.status-band strong {
  font-size: 0.86rem;
}

.status-band p {
  margin: 0;
  color: var(--dim);
  font-size: 0.78rem;
}

.status-light {
  width: 8px;
  height: 8px;
  background: var(--lime);
  border-radius: 50%;
  box-shadow: 0 0 14px rgba(199, 255, 111, 0.68);
}

.status-band > a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--cyan);
  font-size: 0.78rem;
  font-weight: 800;
  white-space: nowrap;
}

.section {
  width: var(--shell);
  margin: 0 auto;
  padding: clamp(88px, 11vw, 144px) 0;
}

.section-heading {
  max-width: 790px;
  margin-bottom: 48px;
}

.section-heading > p:not(.eyebrow),
.split-heading > p {
  color: var(--muted);
}

.split-heading {
  max-width: none;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, 0.55fr);
  align-items: end;
  gap: 50px;
}

.split-heading > div h2 {
  margin-bottom: 0;
}

.split-heading > p {
  margin: 0 0 5px;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.category-card {
  position: relative;
  min-height: 330px;
  padding: 25px;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.045), transparent 60%),
    var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition:
    transform 220ms ease,
    border-color 220ms ease,
    background 220ms ease;
}

.category-card::after {
  position: absolute;
  right: -50px;
  bottom: -70px;
  width: 210px;
  height: 210px;
  content: "";
  opacity: 0.13;
  background: var(--cyan);
  border-radius: 50%;
  filter: blur(50px);
}

.category-card.accent-magenta::after,
.category-card.accent-rose::after {
  background: var(--magenta);
}

.category-card.accent-violet::after {
  background: var(--violet);
}

.category-card.accent-amber::after {
  background: var(--amber);
}

.category-card.accent-lime::after {
  background: var(--lime);
}

.category-card:hover {
  z-index: 2;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.075), transparent 60%),
    rgba(19, 28, 49, 0.92);
  border-color: var(--line-strong);
  transform: translateY(-7px);
}

.category-index {
  color: var(--dim);
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.16em;
}

.category-icon {
  width: 62px;
  height: 62px;
  margin: 32px 0;
  display: grid;
  place-items: center;
  color: var(--cyan);
  background: rgba(109, 244, 255, 0.06);
  border: 1px solid rgba(109, 244, 255, 0.18);
  border-radius: 18px;
}

.accent-magenta .category-icon,
.accent-rose .category-icon {
  color: var(--magenta);
  background: rgba(255, 88, 214, 0.06);
  border-color: rgba(255, 88, 214, 0.19);
}

.accent-violet .category-icon {
  color: var(--violet);
}

.accent-amber .category-icon {
  color: var(--amber);
}

.accent-lime .category-icon {
  color: var(--lime);
}

.category-icon svg {
  width: 29px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.35;
}

.category-card h3 {
  margin-bottom: 13px;
  font-size: 1.7rem;
}

.category-card p {
  margin-bottom: 25px;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

.card-link {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: white;
  font-size: 0.78rem;
  font-weight: 800;
}

.card-link svg {
  transition: transform 180ms ease;
}

.category-card:hover .card-link svg {
  transform: translateX(5px);
}

.scenario-section {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(320px, 0.75fr);
  gap: 18px;
}

.scenario-panel,
.signal-panel {
  padding: clamp(28px, 5vw, 64px);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
}

.scenario-panel .section-heading {
  margin-bottom: 34px;
}

.scenario-panel .section-heading h2 {
  font-size: clamp(2.2rem, 4vw, 3.8rem);
}

.scenario-list {
  padding: 0;
  margin: 0;
  list-style: none;
}

.scenario-list li {
  padding: 22px 0;
  display: grid;
  grid-template-columns: 44px 1fr 44px;
  align-items: center;
  gap: 18px;
  border-top: 1px solid var(--line);
}

.scenario-number {
  color: var(--dim);
  font-size: 0.7rem;
  font-weight: 800;
}

.scenario-list h3 {
  margin-bottom: 5px;
  font-size: 1.28rem;
}

.scenario-list p {
  margin: 0;
  color: var(--muted);
  font-size: 0.86rem;
}

.scenario-list a {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  transition:
    background 180ms ease,
    color 180ms ease;
}

.scenario-list a:hover {
  color: #061017;
  background: var(--cyan);
}

.signal-panel {
  position: relative;
  min-height: 560px;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 72%, rgba(167, 131, 255, 0.19), transparent 40%),
    linear-gradient(160deg, rgba(24, 27, 56, 0.9), rgba(10, 15, 29, 0.94));
}

.signal-kicker {
  color: var(--violet);
  font-size: 0.7rem;
  font-weight: 850;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.signal-quote {
  position: relative;
  z-index: 2;
  max-width: 360px;
  font-family: "Arial Narrow", "Aptos Display", sans-serif;
  font-size: clamp(2rem, 3.6vw, 3.25rem);
  font-weight: 700;
  letter-spacing: -0.045em;
  line-height: 1.08;
}

.signal-orbit {
  position: absolute;
  right: -35px;
  bottom: -40px;
  width: 350px;
  height: 350px;
  border: 1px solid rgba(167, 131, 255, 0.25);
  border-radius: 50%;
}

.signal-orbit::before,
.signal-orbit::after {
  position: absolute;
  inset: 48px;
  content: "";
  border: 1px solid rgba(167, 131, 255, 0.22);
  border-radius: 50%;
}

.signal-orbit::after {
  inset: 100px;
}

.signal-orbit > span {
  position: absolute;
  width: 7px;
  height: 7px;
  background: var(--violet);
  border-radius: 50%;
  box-shadow: 0 0 18px rgba(167, 131, 255, 0.7);
}

.signal-orbit > span:nth-child(1) {
  top: 56px;
  left: 60px;
}

.signal-orbit > span:nth-child(2) {
  top: 50%;
  right: -3px;
}

.signal-orbit > span:nth-child(3) {
  bottom: 30px;
  left: 42%;
}

.signal-orbit b {
  position: absolute;
  inset: 134px;
  display: grid;
  place-items: center;
  color: var(--violet);
}

.signal-orbit b svg {
  width: 60px;
  fill: none;
  stroke: currentColor;
  stroke-linejoin: round;
  stroke-width: 1;
}

.detail-intro {
  padding-bottom: 48px;
}

.highlight-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  gap: 1px;
  overflow: hidden;
}

.highlight-card {
  min-height: 270px;
  padding: clamp(28px, 4vw, 46px);
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.03), transparent),
    var(--canvas-soft);
}

.highlight-number {
  display: block;
  margin-bottom: 65px;
  color: var(--cyan);
  font-size: 0.68rem;
  font-weight: 850;
  letter-spacing: 0.12em;
}

.highlight-card h3 {
  font-size: 1.75rem;
}

.highlight-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.checklist-section {
  padding-top: 64px;
  padding-bottom: 64px;
}

.checklist-card {
  padding: clamp(34px, 6vw, 72px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(340px, 0.85fr);
  align-items: center;
  gap: clamp(40px, 8vw, 100px);
  background:
    radial-gradient(circle at 92% 10%, rgba(109, 244, 255, 0.1), transparent 35%),
    var(--panel-strong);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
}

.checklist-card h2 {
  font-size: clamp(2.25rem, 4vw, 3.75rem);
}

.checklist-card > div > p:last-child {
  color: var(--muted);
}

.checklist-card ul {
  padding: 0;
  margin: 0;
  list-style: none;
}

.checklist-card li {
  padding: 18px 0;
  display: flex;
  align-items: center;
  gap: 15px;
  color: #dce2ee;
  border-bottom: 1px solid var(--line);
  font-weight: 650;
}

.checklist-card li:first-child {
  border-top: 1px solid var(--line);
}

.checklist-card li svg {
  width: 23px;
  color: var(--cyan);
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.related-section {
  padding-bottom: 64px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.related-card {
  min-height: 210px;
  padding: 24px;
  display: grid;
  grid-template-columns: 54px 1fr;
  grid-template-rows: 1fr auto;
  gap: 20px 16px;
  background: rgba(16, 23, 41, 0.72);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition:
    transform 180ms ease,
    border-color 180ms ease;
}

.related-card:hover {
  border-color: var(--line-strong);
  transform: translateY(-4px);
}

.related-icon {
  width: 54px;
  height: 54px;
  display: grid;
  place-items: center;
  color: var(--cyan);
  background: rgba(109, 244, 255, 0.05);
  border: 1px solid rgba(109, 244, 255, 0.15);
  border-radius: 16px;
}

.related-icon.accent-magenta,
.related-icon.accent-rose {
  color: var(--magenta);
}

.related-icon.accent-violet {
  color: var(--violet);
}

.related-icon.accent-amber {
  color: var(--amber);
}

.related-icon.accent-lime {
  color: var(--lime);
}

.related-icon svg {
  width: 27px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.4;
}

.related-card > div p {
  margin: 0 0 8px;
  color: var(--dim);
  font-size: 0.66rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.related-card h3 {
  margin: 0;
  font-size: 1.35rem;
}

.related-arrow {
  grid-column: 2;
  width: 22px;
  color: var(--dim);
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.5;
}

.faq-section {
  max-width: min(960px, calc(100% - 48px));
}

.faq-list {
  border-top: 1px solid var(--line);
}

.faq-list details {
  border-bottom: 1px solid var(--line);
}

.faq-list summary {
  position: relative;
  padding: 28px 52px 28px 0;
  cursor: pointer;
  list-style: none;
  font-family: "Arial Narrow", "Aptos Display", sans-serif;
  font-size: clamp(1.25rem, 2.3vw, 1.75rem);
  font-weight: 700;
  letter-spacing: -0.025em;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary span {
  position: absolute;
  top: 50%;
  right: 5px;
  width: 24px;
  height: 24px;
  transform: translateY(-50%);
}

.faq-list summary span::before,
.faq-list summary span::after {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 18px;
  height: 1px;
  content: "";
  background: var(--cyan);
  transform: translate(-50%, -50%);
  transition: transform 180ms ease;
}

.faq-list summary span::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.faq-list details[open] summary span::after {
  transform: translate(-50%, -50%) rotate(0);
}

.faq-list details p {
  max-width: 760px;
  margin: -5px 0 28px;
  color: var(--muted);
}

.site-footer {
  width: var(--shell);
  margin: 90px auto 20px;
  overflow: hidden;
  background: #0b0f1c;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
}

.footer-grid {
  padding: clamp(36px, 6vw, 70px);
  display: grid;
  grid-template-columns: 1.25fr 0.6fr 0.7fr 1.1fr;
  gap: 44px;
}

.footer-wordmark {
  margin-bottom: 22px;
}

.footer-grid > div > p:not(.footer-label) {
  max-width: 290px;
  color: var(--dim);
  font-size: 0.86rem;
}

.footer-grid > div:not(:first-child) {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
}

.footer-grid a:not(.wordmark) {
  color: #bdc5d6;
  font-size: 0.82rem;
}

.footer-grid a:not(.wordmark):hover {
  color: var(--cyan);
}

.footer-label {
  margin-bottom: 6px;
  color: white;
  font-size: 0.67rem;
  font-weight: 850;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.footer-note {
  padding-left: 28px;
  border-left: 1px solid var(--line);
}

.footer-note p:last-child {
  margin: 0;
}

.footer-bottom {
  padding: 18px clamp(36px, 6vw, 70px);
  display: flex;
  justify-content: space-between;
  gap: 20px;
  color: var(--dim);
  background: rgba(255, 255, 255, 0.018);
  border-top: 1px solid var(--line);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.not-found {
  width: min(900px, calc(100% - 48px));
  min-height: 660px;
  margin: 0 auto;
  padding: 110px 0;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
}

.not-found-code {
  position: absolute;
  z-index: -1;
  right: 4vw;
  color: rgba(109, 244, 255, 0.04);
  font-family: "Arial Narrow", sans-serif;
  font-size: clamp(12rem, 32vw, 33rem);
  font-weight: 900;
  letter-spacing: -0.1em;
  line-height: 0.7;
  user-select: none;
}

.not-found h1 {
  max-width: 800px;
  font-size: clamp(3rem, 8vw, 6rem);
}

.not-found > p:not(.eyebrow) {
  max-width: 630px;
  margin-bottom: 34px;
  color: var(--muted);
  font-size: 1.1rem;
}

@media (max-width: 1080px) {
  :root {
    --shell: min(100% - 36px, 1200px);
  }

  .header-shell {
    position: relative;
  }

  .menu-toggle {
    display: grid;
  }

  .js .site-nav {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    left: 0;
    padding: 18px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    background: rgba(9, 13, 25, 0.98);
    border: 1px solid var(--line);
    border-radius: 16px;
    box-shadow: var(--shadow);
  }

  .js .site-nav.is-open {
    display: flex;
  }

  .site-nav > a {
    padding: 12px;
    white-space: normal;
  }

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

  .site-nav .nav-cta {
    margin-top: 6px;
    text-align: center;
  }

  .menu-toggle[aria-expanded="true"] .menu-open {
    display: none;
  }

  .menu-toggle[aria-expanded="true"] .menu-close {
    display: block;
  }

  .hero {
    grid-template-columns: minmax(0, 1fr) minmax(320px, 0.72fr);
    gap: 42px;
  }

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

  .footer-grid {
    grid-template-columns: 1.2fr 0.8fr 0.8fr;
  }

  .footer-note {
    grid-column: 1 / -1;
    padding: 24px 0 0;
    border-top: 1px solid var(--line);
    border-left: 0;
  }
}

@media (max-width: 820px) {
  :root {
    --shell: min(100% - 28px, 1200px);
  }

  h1 {
    font-size: clamp(3rem, 13vw, 5.1rem);
  }

  .wordmark-place {
    display: none;
  }

  .hero,
  .detail-page .hero {
    min-height: auto;
    padding: 76px 0;
    grid-template-columns: 1fr;
  }

  .hero-stage {
    width: min(100%, 530px);
    aspect-ratio: 1.1;
    justify-self: center;
  }

  .hero-proof {
    flex-wrap: wrap;
  }

  .status-band {
    align-items: flex-start;
    flex-direction: column;
  }

  .status-band > div {
    grid-template-columns: auto 1fr;
  }

  .status-band p {
    grid-column: 2;
  }

  .split-heading {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .scenario-section {
    grid-template-columns: 1fr;
  }

  .signal-panel {
    min-height: 480px;
  }

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

  .highlight-card {
    min-height: auto;
  }

  .highlight-number {
    margin-bottom: 38px;
  }

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

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

  .related-card {
    min-height: 170px;
  }

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

  .footer-grid > div:first-child,
  .footer-note {
    grid-column: 1 / -1;
  }
}

@media (max-width: 560px) {
  :root {
    --shell: calc(100% - 20px);
  }

  body {
    font-size: 15px;
  }

  .site-header {
    padding-top: 10px;
  }

  .header-shell {
    min-height: 64px;
    padding: 8px 9px 8px 14px;
  }

  .wordmark-name {
    font-size: 1.3rem;
  }

  .wordmark-mark {
    width: 27px;
    height: 27px;
  }

  .hero {
    padding: 58px 0 65px;
  }

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

  .button {
    width: 100%;
  }

  .hero-proof {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
  }

  .hero-proof span:last-child {
    grid-column: 1 / -1;
  }

  .hero-stage {
    aspect-ratio: 0.96;
    border-radius: 25px;
  }

  .stage-icon {
    width: 48%;
  }

  .status-band {
    padding: 16px;
  }

  .status-band > a {
    white-space: normal;
  }

  .section {
    padding: 78px 0;
  }

  .section-heading {
    margin-bottom: 34px;
  }

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

  .category-card {
    min-height: 300px;
  }

  .scenario-panel,
  .signal-panel {
    padding: 27px 21px;
    border-radius: 24px;
  }

  .scenario-list li {
    grid-template-columns: 32px 1fr;
  }

  .scenario-list a {
    display: none;
  }

  .signal-panel {
    min-height: 410px;
  }

  .signal-orbit {
    right: -100px;
    bottom: -70px;
  }

  .checklist-card {
    padding: 30px 21px;
    border-radius: 24px;
  }

  .related-card {
    padding: 20px;
  }

  .faq-section {
    max-width: calc(100% - 20px);
  }

  .faq-list summary {
    padding: 23px 42px 23px 0;
  }

  .site-footer {
    margin-top: 55px;
    border-radius: 24px;
  }

  .footer-grid {
    padding: 35px 22px;
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-grid > div:first-child,
  .footer-note {
    grid-column: auto;
  }

  .footer-note {
    padding: 24px 0 0;
  }

  .footer-bottom {
    padding: 17px 22px;
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
  }

  .not-found {
    width: calc(100% - 28px);
    min-height: 580px;
  }
}

@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;
  }
}