@view-transition { navigation: auto; }

:root {
  --bg: #030711;
  --bg-soft: #07111f;
  --surface: color-mix(in srgb, #0b1526 84%, transparent);
  --surface-strong: color-mix(in srgb, #10213b 92%, transparent);
  --line: rgba(145, 220, 255, .18);
  --line-strong: rgba(64, 229, 255, .42);
  --text: #f5fbff;
  --muted: #a8bdd2;
  --muted-2: #70879f;
  --primary: #20e7ff;
  --primary-soft: rgba(32, 231, 255, .16);
  --secondary: #7c5cff;
  --accent: #ffbf5e;
  --success: #62ffb1;
  --danger: #ff6b8b;
  --shadow: 0 24px 80px rgba(0, 0, 0, .38);
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --max: 1180px;
  --header-h: 78px;
  --font: "Inter", "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

* { box-sizing: border-box; }

html {
  color-scheme: dark;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 24px);
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 16% -10%, rgba(32, 231, 255, .22), transparent 30rem),
    radial-gradient(circle at 84% 4%, rgba(124, 92, 255, .24), transparent 34rem),
    linear-gradient(180deg, #030711 0%, #06101e 44%, #02050c 100%);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.6;
  overflow-x: hidden;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -4;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,.85), transparent 78%);
  pointer-events: none;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -3;
  background: radial-gradient(circle at var(--pointer-x, 50%) var(--pointer-y, 20%), rgba(32,231,255,.13), transparent 22rem);
  pointer-events: none;
  transition: opacity .2s ease;
}

::selection { background: rgba(32, 231, 255, .28); color: #fff; }

a { color: inherit; text-decoration: none; }
img, svg { max-width: 100%; display: block; }
button, input, textarea { font: inherit; }

.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: 999;
  transform: translateY(-140%);
  background: var(--primary);
  color: #00131a;
  padding: .7rem 1rem;
  border-radius: 999px;
  font-weight: 800;
  transition: transform .2s ease;
}
.skip-link:focus { transform: translateY(0); }

#brain-canvas {
  position: fixed;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: .72;
}

.aurora {
  position: fixed;
  inset: -20%;
  z-index: -3;
  pointer-events: none;
  background:
    radial-gradient(circle at 20% 24%, rgba(32, 231, 255, .22), transparent 34rem),
    radial-gradient(circle at 80% 14%, rgba(124, 92, 255, .25), transparent 38rem),
    radial-gradient(circle at 50% 86%, rgba(255, 191, 94, .08), transparent 32rem);
  filter: blur(24px) saturate(1.2);
  animation: auroraMove 16s ease-in-out infinite alternate;
}

.scanline {
  position: fixed;
  inset: 0;
  z-index: 100;
  pointer-events: none;
  background: linear-gradient(to bottom, transparent 0, rgba(255,255,255,.025) 50%, transparent 100%);
  background-size: 100% 6px;
  mix-blend-mode: overlay;
  opacity: .34;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(100% - 32px, calc(var(--max) + 48px));
  margin: 0 auto;
  padding: 14px 0;
  transition: transform .3s ease, background .3s ease, border-color .3s ease;
}

.site-header[data-elevated="true"] {
  background: rgba(3, 7, 17, .68);
  border: 1px solid rgba(145, 220, 255, .11);
  border-radius: 0 0 24px 24px;
  padding-inline: 18px;
  backdrop-filter: blur(18px) saturate(1.35);
  box-shadow: 0 16px 70px rgba(0,0,0,.22);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 900;
  letter-spacing: .08em;
  white-space: nowrap;
}

.brand-mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(32,231,255,.18), rgba(124,92,255,.1));
  box-shadow: 0 0 32px rgba(32,231,255,.16), inset 0 0 22px rgba(32,231,255,.11);
}
.brand-mark svg { width: 25px; height: 25px; overflow: visible; }
.brand-mark path:first-child { fill: rgba(32,231,255,.1); stroke: var(--primary); stroke-width: 2; }
.brand-mark path:last-child { fill: none; stroke: rgba(255,255,255,.76); stroke-width: 2; stroke-linecap: round; }

.site-nav { display: flex; align-items: center; }
.nav-toggle { display: none; }
.nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
  border: 1px solid rgba(145, 220, 255, .12);
  border-radius: 999px;
  padding: 6px;
  background: rgba(7, 17, 31, .48);
  backdrop-filter: blur(18px);
}
.nav-menu a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 14px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 14px;
  transition: background .2s ease, color .2s ease, transform .2s ease;
}
.nav-menu a:hover, .nav-menu a:focus-visible {
  color: var(--text);
  background: rgba(255,255,255,.07);
  outline: none;
}
.nav-menu .nav-cta {
  color: #00131a;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), #9dffef);
  box-shadow: 0 8px 32px rgba(32,231,255,.16);
}
.nav-menu .nav-cta:hover { color: #00131a; transform: translateY(-1px); }

.section-shell {
  width: min(100% - 32px, var(--max));
  margin-inline: auto;
  position: relative;
  content-visibility: auto;
  contain-intrinsic-size: 780px;
}

.hero {
  min-height: calc(100svh - var(--header-h));
  display: grid;
  grid-template-columns: minmax(0, 1.03fr) minmax(360px, .74fr);
  align-items: center;
  gap: clamp(28px, 5vw, 72px);
  padding: clamp(44px, 8vw, 104px) 0 clamp(64px, 9vw, 120px);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  color: var(--primary);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: .18em;
  text-transform: uppercase;
}
.eyebrow::before {
  content: "";
  width: 28px;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), transparent);
  box-shadow: 0 0 16px rgba(32,231,255,.7);
}

h1, h2, h3, p { margin-top: 0; }
h1 {
  margin-bottom: 24px;
  font-size: clamp(3.2rem, 8.4vw, 7.6rem);
  line-height: .95;
  letter-spacing: -.07em;
}
h1 span, h2 span {
  background: linear-gradient(90deg, #fff 0%, var(--primary) 45%, #bdafff 85%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 0 0 48px rgba(32,231,255,.1);
}
h2 {
  margin-bottom: 18px;
  max-width: 820px;
  font-size: clamp(2.1rem, 4.8vw, 4.6rem);
  line-height: 1.02;
  letter-spacing: -.055em;
}
h3 {
  margin-bottom: 10px;
  font-size: clamp(1.25rem, 2vw, 1.65rem);
  letter-spacing: -.025em;
}
p { color: var(--muted); }
.hero-subtitle {
  max-width: 720px;
  font-size: clamp(1rem, 1.6vw, 1.25rem);
  color: #c3d5e6;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}
.button {
  min-height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border-radius: 999px;
  padding: 0 22px;
  font-weight: 850;
  border: 1px solid rgba(255,255,255,.13);
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease, background .2s ease;
}
.button:hover, .button:focus-visible {
  transform: translateY(-2px);
  outline: none;
}
.button-primary {
  color: #02131a;
  background: linear-gradient(135deg, var(--primary), #9dffef 56%, #fff 120%);
  box-shadow: 0 22px 54px rgba(32,231,255,.2);
}
.button-primary:hover { box-shadow: 0 24px 72px rgba(32,231,255,.32); }
.button-ghost {
  background: rgba(255,255,255,.045);
  color: var(--text);
  backdrop-filter: blur(14px);
}
.button-ghost:hover { border-color: var(--line-strong); background: rgba(32,231,255,.08); }

.hero-panel,
.security-card,
.contact-inner {
  border: 1px solid var(--line);
  background: linear-gradient(145deg, rgba(13, 29, 51, .82), rgba(5, 10, 20, .72));
  box-shadow: var(--shadow), inset 0 1px rgba(255,255,255,.08);
  backdrop-filter: blur(26px) saturate(1.25);
}

.hero-panel {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-xl);
  padding: 18px;
  isolation: isolate;
}
.hero-panel::before {
  content: "";
  position: absolute;
  inset: -1px;
  z-index: -1;
  background:
    radial-gradient(circle at 20% 10%, rgba(32,231,255,.24), transparent 24rem),
    radial-gradient(circle at 90% 80%, rgba(124,92,255,.22), transparent 22rem);
}
.hero-panel::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image: linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 28px 28px;
  mask-image: radial-gradient(circle at 50% 50%, #000, transparent 70%);
}
.panel-topbar {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 42px;
  border-bottom: 1px solid rgba(145,220,255,.13);
  margin: -4px -4px 16px;
  padding: 0 4px 14px;
  color: var(--muted-2);
  font-size: 12px;
  letter-spacing: .12em;
}
.panel-topbar span { width: 9px; height: 9px; border-radius: 50%; background: var(--danger); }
.panel-topbar span:nth-child(2) { background: var(--accent); }
.panel-topbar span:nth-child(3) { background: var(--success); }
.panel-topbar strong { margin-left: auto; font-size: 11px; color: var(--muted); }

.ops-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.ops-card {
  min-height: 132px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border: 1px solid rgba(145,220,255,.12);
  border-radius: 20px;
  padding: 16px;
  background: rgba(255,255,255,.045);
}
.ops-card.emphasis {
  grid-column: 1 / -1;
  min-height: 168px;
  background: linear-gradient(135deg, rgba(32,231,255,.16), rgba(124,92,255,.1));
}
.ops-card small {
  color: var(--muted-2);
  font-size: 12px;
}
.ops-card strong {
  display: block;
  font-size: clamp(2rem, 5vw, 4.2rem);
  line-height: 1;
  letter-spacing: -.05em;
}
.ops-card span { color: var(--muted); font-size: 13px; }
.pulse-map {
  position: relative;
  min-height: 210px;
  margin-top: 14px;
  border: 1px solid rgba(145,220,255,.1);
  border-radius: 22px;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 50%, rgba(32,231,255,.12), transparent 30%),
    linear-gradient(135deg, rgba(255,255,255,.06), rgba(255,255,255,.02));
}
.pulse-map::before,
.pulse-map::after {
  content: "";
  position: absolute;
  inset: 20%;
  border: 1px solid rgba(32,231,255,.3);
  border-radius: 50%;
  transform: rotateX(70deg) rotateZ(-18deg);
  animation: radarSweep 6s linear infinite;
}
.pulse-map::after { inset: 34%; animation-duration: 4s; animation-direction: reverse; border-color: rgba(124,92,255,.35); }
.pulse-map span {
  position: absolute;
  left: var(--x);
  top: var(--y);
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 0 6px rgba(32,231,255,.12), 0 0 30px rgba(32,231,255,.65);
  animation: nodePulse 1.8s ease-in-out infinite;
  animation-delay: var(--d);
}

.hero-scroll {
  position: absolute;
  left: 0;
  bottom: 30px;
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--muted-2);
  font-size: 11px;
  letter-spacing: .22em;
  writing-mode: vertical-rl;
}
.hero-scroll i {
  width: 2px;
  height: 56px;
  border-radius: 99px;
  background: linear-gradient(to bottom, transparent, var(--primary));
  animation: scrollHint 1.6s ease-in-out infinite;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin-top: -28px;
  margin-bottom: clamp(90px, 12vw, 160px);
}
.metric-card {
  min-height: 154px;
  display: flex;
  flex-direction: column;
  justify-content: end;
  gap: 12px;
  border: 1px solid rgba(145,220,255,.13);
  border-radius: var(--radius-lg);
  padding: 22px;
  background: rgba(255,255,255,.045);
  box-shadow: inset 0 1px rgba(255,255,255,.08);
  backdrop-filter: blur(18px);
}
.metric-value {
  color: var(--text);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 920;
  line-height: .9;
  letter-spacing: -.055em;
}
.metric-label { color: var(--muted); font-size: 14px; }

.section-heading {
  max-width: 860px;
  margin-bottom: clamp(32px, 6vw, 56px);
}
.section-heading p:last-child { max-width: 760px; font-size: 1.08rem; }

.platform,
.architecture,
.scenarios,
.security,
.contact {
  padding-block: clamp(70px, 11vw, 132px);
}

.capability-grid,
.scenario-grid {
  container-type: inline-size;
  display: grid;
  gap: 18px;
}
.capability-grid { grid-template-columns: repeat(4, 1fr); }
.scenario-grid { grid-template-columns: repeat(4, 1fr); }

.capability-card,
.scenario-card {
  position: relative;
  overflow: hidden;
  min-height: 290px;
  border: 1px solid rgba(145,220,255,.13);
  border-radius: var(--radius-lg);
  padding: 24px;
  background: linear-gradient(145deg, rgba(255,255,255,.055), rgba(255,255,255,.022));
  box-shadow: inset 0 1px rgba(255,255,255,.075);
  transition: transform .25s ease, border-color .25s ease, background .25s ease;
}
.capability-card::before,
.scenario-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at var(--card-x, 50%) var(--card-y, 0%), rgba(32,231,255,.22), transparent 18rem);
  opacity: 0;
  transition: opacity .25s ease;
}
.capability-card:hover,
.scenario-card:hover {
  transform: translateY(-7px);
  border-color: rgba(32,231,255,.34);
  background: linear-gradient(145deg, rgba(32,231,255,.09), rgba(255,255,255,.025));
}
.capability-card:hover::before,
.scenario-card:hover::before { opacity: 1; }
.capability-card > *, .scenario-card > * { position: relative; }
.card-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  margin-bottom: 72px;
  border: 1px solid rgba(32,231,255,.24);
  border-radius: 16px;
  color: var(--primary);
  background: rgba(32,231,255,.07);
  font-weight: 900;
}
.scenario-icon {
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  margin-bottom: 64px;
  border-radius: 20px;
  background: rgba(255,255,255,.08);
  font-size: 28px;
}
.capability-card p,
.scenario-card p { margin-bottom: 0; color: #aec3d7; }

.arch-layout {
  display: grid;
  grid-template-columns: .95fr 1fr;
  align-items: center;
  gap: clamp(30px, 6vw, 80px);
}
.arch-visual {
  position: relative;
  aspect-ratio: 1;
  min-height: 420px;
  border: 1px solid rgba(145,220,255,.12);
  border-radius: 50%;
  background:
    radial-gradient(circle, rgba(32,231,255,.12) 0 12%, transparent 13% 100%),
    radial-gradient(circle at 50% 50%, rgba(124,92,255,.12), transparent 52%);
  box-shadow: inset 0 0 90px rgba(32,231,255,.07), 0 30px 90px rgba(0,0,0,.26);
  overflow: hidden;
}
.arch-visual::before {
  content: "";
  position: absolute;
  inset: 9%;
  border: 1px dashed rgba(32,231,255,.28);
  border-radius: 50%;
  animation: spin 22s linear infinite;
}
.arch-visual::after {
  content: "";
  position: absolute;
  inset: 24%;
  border: 1px dashed rgba(124,92,255,.3);
  border-radius: 50%;
  animation: spin 16s linear infinite reverse;
}
.core-node {
  position: absolute;
  left: 50%;
  top: 50%;
  z-index: 2;
  transform: translate(-50%, -50%);
  width: 152px;
  height: 152px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(32,231,255,.42);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(32,231,255,.22), rgba(6,17,31,.92) 72%);
  box-shadow: 0 0 54px rgba(32,231,255,.28), inset 0 0 28px rgba(32,231,255,.18);
  text-align: center;
  font-weight: 900;
  line-height: 1.35;
}
.core-node span { color: var(--primary); font-size: 12px; letter-spacing: .16em; text-transform: uppercase; }
.orbit {
  position: absolute;
  z-index: 3;
  display: grid;
  place-items: center;
  min-width: 116px;
  min-height: 48px;
  padding: 10px 16px;
  border: 1px solid rgba(145,220,255,.18);
  border-radius: 999px;
  background: rgba(7,17,31,.76);
  color: #eaf9ff;
  backdrop-filter: blur(14px);
  box-shadow: 0 14px 50px rgba(0,0,0,.24);
}
.orbit-a { left: 50%; top: 8%; transform: translateX(-50%); }
.orbit-b { right: 5%; top: 48%; transform: translateY(-50%); }
.orbit-c { left: 50%; bottom: 8%; transform: translateX(-50%); }
.orbit-d { left: 5%; top: 48%; transform: translateY(-50%); }
.arch-list {
  display: grid;
  gap: 14px;
}
.arch-item {
  border: 1px solid rgba(145,220,255,.13);
  border-radius: 20px;
  padding: 20px 22px;
  background: rgba(255,255,255,.045);
}
.arch-item strong {
  display: block;
  margin-bottom: 6px;
  font-size: 1.05rem;
}
.arch-item p { margin: 0; }

.security-card {
  display: grid;
  grid-template-columns: 1fr .86fr;
  gap: clamp(26px, 5vw, 64px);
  align-items: center;
  border-radius: var(--radius-xl);
  padding: clamp(28px, 5vw, 62px);
}
.check-list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.check-list li {
  position: relative;
  padding-left: 34px;
  color: #d9e8f6;
}
.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .42em;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 50%, var(--success) 0 32%, rgba(98,255,177,.13) 34% 100%);
  box-shadow: 0 0 24px rgba(98,255,177,.18);
}

.contact-inner {
  position: relative;
  overflow: hidden;
  max-width: 920px;
  margin: 0 auto;
  text-align: center;
  border-radius: var(--radius-xl);
  padding: clamp(38px, 7vw, 88px) clamp(24px, 6vw, 74px);
}
.contact-inner::before {
  content: "";
  position: absolute;
  inset: -35%;
  background: conic-gradient(from 180deg, transparent, rgba(32,231,255,.18), rgba(124,92,255,.16), transparent);
  animation: spin 10s linear infinite;
  opacity: .65;
}
.contact-inner > * { position: relative; }
.contact-inner p:not(.eyebrow) {
  max-width: 680px;
  margin-inline: auto;
}
.contact-mail {
  display: inline-flex;
  margin-top: 22px;
  color: var(--primary);
  font-size: clamp(1.2rem, 3vw, 2rem);
  font-weight: 900;
  letter-spacing: -.02em;
  border-bottom: 1px solid rgba(32,231,255,.5);
}
.contact-mail:hover { color: #fff; border-color: #fff; }

.site-footer {
  width: min(100% - 32px, var(--max));
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 32px 0 44px;
  color: var(--muted-2);
  border-top: 1px solid rgba(145,220,255,.12);
  font-size: 14px;
}

.reveal {
  opacity: 0;
  transform: translateY(28px) scale(.985);
  transition: opacity .7s ease, transform .7s cubic-bezier(.2,.75,.2,1);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

@supports (animation-timeline: view()) {
  .capability-card,
  .scenario-card,
  .metric-card {
    animation: fadeUp linear both;
    animation-timeline: view();
    animation-range: entry 8% cover 30%;
  }
  .arch-visual {
    animation: softScale linear both;
    animation-timeline: view();
    animation-range: entry 5% cover 46%;
  }
}

@container (max-width: 760px) {
  .capability-grid,
  .scenario-grid { grid-template-columns: 1fr; }
}

@keyframes fadeUp { from { opacity: .1; transform: translateY(44px); } to { opacity: 1; transform: translateY(0); } }
@keyframes softScale { from { opacity: .3; transform: scale(.88); } to { opacity: 1; transform: scale(1); } }
@keyframes auroraMove { to { transform: translate3d(2%, -2%, 0) rotate(3deg) scale(1.04); } }
@keyframes radarSweep { to { transform: rotateX(70deg) rotateZ(342deg); } }
@keyframes nodePulse { 50% { transform: scale(1.5); box-shadow: 0 0 0 11px rgba(32,231,255,.04), 0 0 38px rgba(32,231,255,.9); } }
@keyframes scrollHint { 50% { transform: translateY(14px); opacity: .45; } }
@keyframes spin { to { rotate: 360deg; } }

@media (max-width: 1080px) {
  .hero,
  .arch-layout,
  .security-card { grid-template-columns: 1fr; }
  .hero-panel { max-width: 720px; }
  .metrics { grid-template-columns: repeat(2, 1fr); margin-top: 0; }
  .capability-grid,
  .scenario-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 780px) {
  :root { --header-h: 70px; }
  body::before { background-size: 48px 48px; }
  .site-header { width: min(100% - 20px, var(--max)); }
  .brand-text { letter-spacing: .04em; }
  .nav-toggle {
    position: relative;
    z-index: 101;
    width: 44px;
    height: 44px;
    display: inline-grid;
    place-items: center;
    border: 1px solid rgba(145,220,255,.18);
    border-radius: 14px;
    background: rgba(255,255,255,.06);
    color: #fff;
  }
  .nav-toggle span:not(.sr-only) {
    width: 18px;
    height: 2px;
    grid-area: 1 / 1;
    background: currentColor;
    border-radius: 99px;
    transition: transform .25s ease, opacity .25s ease;
  }
  .nav-toggle span:nth-child(1) { transform: translateY(-6px); }
  .nav-toggle span:nth-child(3) { transform: translateY(6px); }
  .nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: rotate(-45deg); }
  .nav-menu {
    position: fixed;
    top: 12px;
    left: 10px;
    right: 10px;
    z-index: 100;
    display: grid;
    gap: 8px;
    border-radius: 24px;
    padding: 76px 14px 14px;
    transform: translateY(-18px);
    opacity: 0;
    pointer-events: none;
    transition: opacity .22s ease, transform .22s ease;
  }
  .nav-menu.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav-menu a { justify-content: flex-start; padding-inline: 16px; }
  .nav-menu .nav-cta { justify-content: center; }
  .section-shell { width: min(100% - 24px, var(--max)); }
  .hero { padding-top: 48px; }
  h1 { font-size: clamp(3rem, 17vw, 5.2rem); }
  .hero-actions .button { flex: 1 1 210px; }
  .ops-grid { grid-template-columns: 1fr; }
  .ops-card.emphasis { grid-column: auto; }
  .pulse-map { min-height: 180px; }
  .hero-scroll { display: none; }
  .metrics,
  .capability-grid,
  .scenario-grid { grid-template-columns: 1fr; }
  .metric-card { min-height: 130px; }
  .arch-visual { min-height: auto; }
  .orbit { min-width: 94px; font-size: 13px; }
  .core-node { width: 128px; height: 128px; }
  .site-footer { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: .001ms !important;
  }
  #brain-canvas, .scanline { display: none; }
  .reveal { opacity: 1; transform: none; }
}