.fx-thermal {
  position: absolute; top: 0; right: 0; bottom: 0; z-index: -3;
  width: min(60%, 960px);
  background-size: cover; background-position: center;
  filter: url(#fx-thermal-lut) saturate(1.15);
  --fx-x: -999px; --fx-y: -999px; --fx-r: 0px;
  -webkit-mask-image: radial-gradient(circle at var(--fx-x) var(--fx-y), #000 calc(var(--fx-r) - 1px), transparent var(--fx-r));
          mask-image: radial-gradient(circle at var(--fx-x) var(--fx-y), #000 calc(var(--fx-r) - 1px), transparent var(--fx-r));
  transition: --fx-r 200ms ease-out;
  pointer-events: none;
}
.fx-loupe {
  position: absolute; z-index: 1; pointer-events: none;
  width: 0; height: 0; left: 0; top: 0;
  opacity: 0; transition: opacity 180ms ease-out;
}
.fx-loupe.is-on { opacity: 1; }
.fx-loupe__ring {
  position: absolute; left: -84px; top: -84px; width: 168px; height: 168px; border-radius: 50%;
  border: 1px solid rgba(250, 250, 250, 0.7);
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.35), 0 0 24px rgba(245, 158, 11, 0.25);
}
.fx-loupe__ring::before, .fx-loupe__ring::after {
  content: ""; position: absolute; background: rgba(250, 250, 250, 0.8);
}
.fx-loupe__ring::before { left: 50%; top: -8px; width: 1px; height: 14px; }
.fx-loupe__ring::after  { top: 50%; left: -8px; width: 14px; height: 1px; }
.fx-loupe__read {
  position: absolute; left: 96px; top: -30px; white-space: nowrap;
  font-family: var(--font-mono); font-size: 0.8125rem; line-height: 1.35;
  color: var(--color-text-primary);
  background: rgba(10, 10, 11, 0.78); border: 1px solid var(--ox-line-strong);
  border-radius: 6px; padding: 0.375rem 0.625rem;
}
.fx-loupe__temp { font-size: 1.125rem; font-weight: 600; color: var(--ox-heat-soft); }
.fx-loupe__temp[data-band="hot"] { color: var(--ox-heat); }
.fx-loupe__tag { display: block; font-size: 0.6875rem; letter-spacing: 0.04em; color: var(--color-text-secondary); }
.fx-loupe-hint {
  position: absolute; right: clamp(1rem, 3vw, 2rem); bottom: 1rem; z-index: 1;
  font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 0.03em; color: var(--color-text-secondary);
  display: inline-flex; align-items: center; gap: 0.5rem; pointer-events: none;
  transition: opacity 300ms ease-out;
}
.fx-loupe-hint::before { content: ""; width: 10px; height: 10px; border-radius: 50%; border: 1px solid currentColor; }
.hx-subhero.fx-armed { cursor: crosshair; }
.hx-subhero.fx-armed .container a, .hx-subhero.fx-armed .container button { cursor: pointer; }
@media (max-width: 900px) { .fx-thermal, .fx-loupe, .fx-loupe-hint { display: none; } }

.fx-telemetry {
  position: absolute; right: clamp(1rem, 4vw, 3rem); bottom: clamp(5rem, 9vw, 7rem); z-index: 2;
  width: 290px; padding: 0.875rem 1rem;
  background: rgba(20, 20, 23, 0.78); border: 1px solid var(--ox-line-strong); border-radius: 10px;
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
  font-family: var(--font-mono); font-size: 0.75rem; color: var(--color-text-secondary);
}
.fx-telemetry__head { display: flex; justify-content: space-between; align-items: center; margin-bottom: 0.625rem; letter-spacing: 0.04em; }
.fx-telemetry__live { display: inline-flex; align-items: center; gap: 0.4rem; color: var(--platform-dark-success); }
.fx-telemetry__live::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; animation: fx-pulse 1.6s ease-in-out infinite; }
.fx-telemetry__row { display: flex; justify-content: space-between; gap: 1rem; padding: 0.3rem 0; border-top: 1px solid var(--ox-line); }
.fx-telemetry__row:first-of-type { border-top: 0; }
.fx-telemetry__v { color: var(--color-text-primary); font-variant-numeric: tabular-nums; }
.fx-telemetry__v[data-state="watch"] { color: var(--ox-heat-soft); }
.fx-telemetry__spark { display: block; width: 100%; height: 28px; margin-top: 0.5rem; }
@keyframes fx-pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.25; } }
@media (max-width: 1099px) { .fx-telemetry { display: none; } }

.fx-spot {
  background-image: radial-gradient(420px circle at var(--fx-mx, -999px) var(--fx-my, -999px), rgba(var(--platform-dark-accent-rgb), 0.10), transparent 45%);
  transition: border-color 200ms ease-out;
}
.fx-spot:hover { border-color: rgba(var(--platform-dark-accent-rgb), 0.45) !important; }

.fx-scan {
  background-image: linear-gradient(90deg, transparent, rgba(var(--platform-dark-accent-rgb), 0.9), transparent);
  background-repeat: no-repeat; background-size: 32% 1px; background-position: -50% 100%;
  padding-bottom: 0.25rem;
}
.fx-scan.fx-in { animation: fx-scan 1.1s cubic-bezier(.2, .7, .2, 1) 1 both; }
@keyframes fx-scan { from { background-position: -50% 100%; } to { background-position: 150% 100%; } }

.fx-js .fx-rise { opacity: 0; transform: translateY(10px); transition: opacity 500ms ease-out, transform 500ms ease-out; }
.fx-js .fx-rise.fx-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .fx-thermal { transition: none; }
  .fx-telemetry__live::before { animation: none; }
  .fx-scan.fx-in { animation: none; }
  .fx-js .fx-rise { opacity: 1; transform: none; transition: none; }
}
.fx-loupe--flip .fx-loupe__read { left: auto; right: 96px; }
.fx-telemetry__row > span:first-child { white-space: nowrap; }
.fx-telemetry__head > span { white-space: nowrap; }
.fx-thermal--full { inset: 0; width: auto; z-index: 0; background-position: 58% 50%; }

.nav, .nav.scrolled {
  background: rgba(10, 10, 11, 0.72);
  -webkit-backdrop-filter: saturate(140%) blur(14px); backdrop-filter: saturate(140%) blur(14px);
}
.rh-hero__title { font-size: clamp(2.75rem, 5.2vw, 4.75rem); line-height: 1.02; letter-spacing: -0.03em; max-width: 16ch; }
.hx-subhero__title { letter-spacing: -0.025em; }
.rh-section { padding-block: clamp(5rem, 10vw, 8rem); }

.btn { transition: background-color 180ms ease, border-color 180ms ease, color 180ms ease, transform 180ms ease, box-shadow 180ms ease; }
.btn--primary:hover, .btn--accent:hover { transform: translateY(-1px); box-shadow: 0 8px 24px rgba(var(--platform-dark-accent-rgb), 0.28); }
.btn--primary:active, .btn--accent:active { transform: translateY(0); box-shadow: none; }
.rh-link svg, .rc-link svg, .r-feature__cta svg, a[class*="__cta"] svg { transition: transform 180ms ease; }
.rh-link:hover svg, .rc-link:hover svg, .r-feature__cta:hover svg, a[class*="__cta"]:hover svg { transform: translateX(3px); }

.fx-js .rh-hero__content > *, .fx-js .hx-subhero .container > * {
  animation: fx-enter 700ms cubic-bezier(.2, .7, .2, 1) both;
}
.fx-js .rh-hero__content > :nth-child(2), .fx-js .hx-subhero .container > :nth-child(2) { animation-delay: 80ms; }
.fx-js .rh-hero__content > :nth-child(3), .fx-js .hx-subhero .container > :nth-child(3) { animation-delay: 160ms; }
.fx-js .rh-hero__content > :nth-child(4), .fx-js .hx-subhero .container > :nth-child(4) { animation-delay: 240ms; }
.fx-js .rh-hero__content > :nth-child(n+5), .fx-js .hx-subhero .container > :nth-child(n+5) { animation-delay: 320ms; }
@keyframes fx-enter { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }

.rh-hero::after, .hx-subhero::after {
  content: ""; position: absolute; inset: 0; pointer-events: none; z-index: 0; opacity: 0.06; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;base64,PHN2ZyB4bWxucz0naHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmcnIHdpZHRoPScxNjAnIGhlaWdodD0nMTYwJz48ZmlsdGVyIGlkPSduJz48ZmVUdXJidWxlbmNlIHR5cGU9J2ZyYWN0YWxOb2lzZScgYmFzZUZyZXF1ZW5jeT0nMC45JyBudW1PY3RhdmVzPScyJyBzdGl0Y2hUaWxlcz0nc3RpdGNoJy8+PC9maWx0ZXI+PHJlY3Qgd2lkdGg9JzEwMCUnIGhlaWdodD0nMTAwJScgZmlsdGVyPSd1cmwoI24pJy8+PC9zdmc+");
}
@media (prefers-reduced-motion: reduce) {
  .fx-js .rh-hero__content > *, .fx-js .hx-subhero .container > * { animation: none; }
  .btn--primary:hover, .btn--accent:hover { transform: none; }
}
.hx-subhero > .container { z-index: 1; }

.ox-interlude { position: relative; height: clamp(22rem, 62vh, 40rem); overflow: hidden; isolation: isolate; border-top: 1px solid var(--ox-line); border-bottom: 1px solid var(--ox-line); }
.ox-interlude__img { position: absolute; inset: -4% 0; background-size: cover; background-position: center; z-index: -2; }
.ox-interlude::before { content: ""; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(90deg, rgba(10,10,11,0.86) 0%, rgba(10,10,11,0.35) 55%, rgba(10,10,11,0.15) 100%), linear-gradient(0deg, rgba(10,10,11,0.7), transparent 40%); }
.ox-interlude .container { height: 100%; display: flex; flex-direction: column; justify-content: flex-end; padding-bottom: clamp(2.5rem, 6vw, 4.5rem); }
.ox-interlude__k { font-family: var(--font-mono); font-size: 0.8125rem; letter-spacing: 0.04em; color: var(--color-accent); margin-bottom: 0.75rem; }
.ox-interlude__line { font-size: clamp(1.75rem, 3.6vw, 3rem); line-height: 1.1; letter-spacing: -0.02em; font-weight: 600; max-width: 18ch; color: var(--color-text-primary); text-wrap: balance; }
.ox-interlude__cap { margin-top: 1rem; font-family: var(--font-mono); font-size: 0.6875rem; color: rgba(250,250,250,0.45); }
@supports (animation-timeline: view()) {
  @media (prefers-reduced-motion: no-preference) {
    .ox-interlude__img { animation: ox-push linear both; animation-timeline: view(); animation-range: entry 0% exit 100%; }
    @keyframes ox-push { from { transform: scale(1.12) translateY(-2%); } to { transform: scale(1.0) translateY(2%); } }
  }
}

@media (prefers-reduced-motion: no-preference) {
  @view-transition { navigation: auto; }
  ::view-transition-old(root) { animation: 220ms ease-out both ox-vt-out; }
  ::view-transition-new(root) { animation: 320ms cubic-bezier(.2,.7,.2,1) both ox-vt-in; }
  .nav { view-transition-name: ox-nav; }
  @keyframes ox-vt-out { to { opacity: 0; } }
  @keyframes ox-vt-in { from { opacity: 0; transform: translateY(8px); } }
}

.rh-screens__stage { position: relative; }
.rh-screens__stage::after {
  content: ""; position: absolute; left: 8%; right: 8%; bottom: -8%; height: 30%; z-index: -1;
  background: radial-gradient(50% 60% at 50% 0%, rgba(var(--platform-dark-accent-rgb), 0.28), transparent 70%);
  filter: blur(30px); pointer-events: none;
}
.rh-screens { perspective: 1800px; }
@supports (animation-timeline: view()) {
  @media (prefers-reduced-motion: no-preference) {
    .rh-screens__stage { transform-origin: 50% 100%; animation: ox-tilt linear both; animation-timeline: view(); animation-range: entry 10% cover 45%; }
    @keyframes ox-tilt { from { transform: rotateX(14deg) scale(0.94); opacity: 0.6; } to { transform: none; opacity: 1; } }
  }
}
@media (prefers-reduced-motion: reduce) {
  .fx-js .rh-hero__content > *, .fx-js .hx-subhero .container > * { animation: fx-fade 500ms ease-out both; }
  @keyframes fx-fade { from { opacity: 0; } to { opacity: 1; } }
}

.ox-spec { margin: 3rem 0 0; }
.ox-spec__stage { position: relative; border-radius: var(--radius-xl); overflow: hidden; border: 1px solid var(--ox-line); background: var(--ox-navy); }
.ox-spec__stage img { display: block; width: 100%; height: auto; }
.ox-spec__dot {
  position: absolute; transform: translate(-50%, -50%); width: 40px; height: 40px; border-radius: 50%;
  display: grid; place-items: center; cursor: pointer; z-index: 2;
  background-color: rgba(10, 10, 11, 0.72); border: 1px solid rgba(250, 250, 250, 0.7); color: var(--color-text-primary);
  -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px);
  font-family: var(--font-mono); font-size: 0.6875rem; transition: transform 180ms ease;
}
.ox-spec__dot::after { content: ""; position: absolute; inset: -6px; border-radius: 50%; border: 1px solid rgba(var(--platform-dark-accent-rgb), 0.55); animation: ox-ping 2.4s ease-out infinite; }
.ox-spec__dot:hover, .ox-spec__dot[aria-expanded="true"] { background-color: var(--color-accent); color: var(--ox-navy); border-color: var(--color-accent); transform: translate(-50%, -50%) scale(1.06); }
.ox-spec__card {
  position: absolute; z-index: 3; width: min(300px, 70%); transform: translate(28px, -50%);
  padding: 0.875rem 1rem; border-radius: 10px; background: rgba(20, 20, 23, 0.92); border: 1px solid var(--ox-line-strong);
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px); display: grid; gap: 0.25rem; font-size: var(--fs-small); line-height: 1.5; color: var(--color-text-secondary);
}
.ox-spec__card strong { color: var(--color-text-primary); font-size: 0.9375rem; }
.ox-spec__card.is-left { transform: translate(calc(-100% - 28px), -50%); }
.ox-spec__cap { margin-top: 0.75rem; font-family: var(--font-mono); font-size: 0.6875rem; color: rgba(250, 250, 250, 0.45); }
@keyframes ox-ping { 0% { opacity: 0.9; transform: scale(0.9); } 100% { opacity: 0; transform: scale(1.5); } }
@media (prefers-reduced-motion: reduce) { .ox-spec__dot::after { animation: none; opacity: 0.5; } }
@media (max-width: 640px) { .ox-spec__dot { width: 32px; height: 32px; } .ox-spec__card { width: 78%; left: 11% !important; top: auto !important; bottom: 0.75rem; transform: none !important; } }
.ox-spec__card[hidden] { display: none; }
.ox-spec .visually-hidden { position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }

.ox-404 { position: relative; isolation: isolate; overflow: hidden; min-height: calc(100svh - var(--nav-h)); display: grid; align-items: center; }
.v3-404__still { position: absolute; inset: 0; z-index: -2; background-size: cover; background-position: 60% 50%; opacity: 0.55; }
.ox-404::before { content: ""; position: absolute; inset: 0; z-index: -1; background: radial-gradient(60% 70% at 50% 50%, rgba(10,10,11,0.55), rgba(10,10,11,0.92)); }

.r-card__media img, .rh-case__media img, .r-feature__media img { filter: brightness(0.94); }
.r-case-hero .hx-subhero__still { filter: brightness(0.88); }

.nav__mobile-menu { padding: 1rem var(--gutter) 2rem; gap: 0; background: rgba(10, 10, 11, 0.97); -webkit-backdrop-filter: blur(16px); backdrop-filter: blur(16px); }
.nav__mobile-link {
  font-size: 1.75rem; font-weight: 500; letter-spacing: -0.015em; color: var(--color-text-primary);
  padding: 1rem 0.25rem; border-bottom: 1px solid var(--ox-line); display: flex; justify-content: space-between; align-items: center;
}
.nav__mobile-link::after { content: "→"; font-size: 1rem; color: var(--color-text-secondary); transition: transform 180ms ease, color 180ms ease; }
.nav__mobile-link:hover::after, .nav__mobile-link:focus-visible::after { transform: translateX(4px); color: var(--color-accent); }
.nav__mobile-cta { margin-top: 2rem; }
.nav__mobile-cta .btn { min-height: 52px; font-size: 1rem; }
.nav__mobile-link { border-radius: 0; background: transparent; }

.rh-roles { counter-reset: role; gap: 1rem !important; }
.rh-roles li {
  counter-increment: role; position: relative; padding: 1.5rem 1.375rem 1.375rem !important;
  border: 1px solid var(--ox-line) !important; border-radius: var(--radius-md); background-color: var(--ox-navy-raised);
}
.rh-roles li::before { content: counter(role, decimal-leading-zero); display: block; margin-bottom: 1.25rem; font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 0.04em; color: var(--color-accent); }

#hybrid-ai .hxh__caption, #hybrid-ai .hxh__foot { display: none; }

@media (prefers-reduced-motion: no-preference) {
  .rh-hero__still, .hx-subhero__still, .v3-404__still { animation: ox-kenburns 22s ease-in-out infinite alternate; transform-origin: 60% 50%; }
  .fx-thermal { animation: ox-kenburns 22s ease-in-out infinite alternate; transform-origin: 60% 50%; }
  @keyframes ox-kenburns { from { transform: scale(1.0); } to { transform: scale(1.06); } }
}

.r-illus-chip, .rc-field__tag, .rh-case .r-illus-chip, .r-illus-tag { background: rgba(10, 10, 11, 0.38); padding: 0.125rem 0.375rem; border-radius: 4px; }
.product-ui__user-avatar { color: var(--ox-navy); }

.ox-stats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); margin: 4rem 0 1rem; border-top: 1px solid var(--ox-line); border-bottom: 1px solid var(--ox-line); }
.ox-stats > div { padding: 2rem 1.5rem; border-left: 1px solid var(--ox-line); display: grid; gap: 0.375rem; }
.ox-stats > div:first-child { border-left: 0; padding-left: 0; }
.ox-stats__n { font-family: var(--font-mono); font-size: clamp(2.5rem, 5vw, 4rem); line-height: 1; letter-spacing: -0.03em; color: var(--color-text-primary); }
.ox-stats__l { font-size: var(--fs-small); color: var(--color-text-secondary); }
@media (max-width: 640px) { .ox-stats { grid-template-columns: minmax(0, 1fr); } .ox-stats > div { border-left: 0; border-top: 1px solid var(--ox-line); padding-left: 0; } .ox-stats > div:first-child { border-top: 0; } }

.footer { position: relative; overflow: hidden; }
.footer::after {
  content: "OctosX"; position: absolute; left: 50%; bottom: -0.18em; transform: translateX(-50%); z-index: 0;
  font-family: var(--font-heading); font-weight: 700; font-size: clamp(6rem, 22vw, 20rem); line-height: 1; letter-spacing: -0.05em;
  color: rgba(250, 250, 250, 0.028); white-space: nowrap; pointer-events: none;
}
.footer > .container { position: relative; z-index: 1; }
.footer { padding-bottom: clamp(6rem, 14vw, 12rem); }

@media (prefers-reduced-motion: no-preference) {
  .fx-js .rh-hero__title, .fx-js .hx-subhero__title { animation: ox-reveal 1000ms cubic-bezier(.2, .7, .2, 1) 80ms both; }
  @keyframes ox-reveal { from { clip-path: inset(0 0 100% 0); transform: translateY(18px); opacity: 0.2; } to { clip-path: inset(0 0 -10% 0); transform: none; opacity: 1; } }
}

main { counter-reset: ox-chapter; }
main > section.rh-section .rh-head > .rh-eyebrow { counter-increment: ox-chapter; }
main > section.rh-section .rh-head > .rh-eyebrow::before { content: counter(ox-chapter, decimal-leading-zero) " / "; color: var(--color-text-secondary); }

.fx-progress { position: fixed; left: 0; top: 0; height: 2px; width: 100%; z-index: 1100; pointer-events: none;
  background: linear-gradient(90deg, rgba(var(--platform-dark-accent-rgb), 0.2), var(--color-accent)); transform-origin: 0 50%; transform: scaleX(0); }
@supports (animation-timeline: scroll()) {
  @media (prefers-reduced-motion: no-preference) {
    .fx-progress { animation: ox-progress linear both; animation-timeline: scroll(root); }
    @keyframes ox-progress { to { transform: scaleX(1); } }
  }
}
@supports not (animation-timeline: scroll()) { .fx-progress { display: none; } }

.rh-final, .r-cta, .rc-cta { position: relative; isolation: isolate; overflow: hidden; }
.rh-final { margin-top: clamp(4rem, 8vw, 6rem); padding: clamp(3.5rem, 7vw, 5.5rem) clamp(1.5rem, 4vw, 3rem); border: 1px solid var(--ox-line); border-radius: var(--radius-xl); }
.rh-final::before, .r-cta::before, .rc-cta::before {
  content: ""; position: absolute; inset: 0; z-index: -2;
  background:   radial-gradient(60% 70% at 50% 0%, rgba(250, 250, 250, 0.07), transparent 70%),
    radial-gradient(circle, rgba(250, 250, 250, 0.16) 1px, transparent 1.6px) 0 0 / 14px 14px;
  opacity: 1;
  -webkit-mask-image: radial-gradient(80% 90% at 50% 40%, #000 25%, transparent 100%);
          mask-image: radial-gradient(80% 90% at 50% 40%, #000 25%, transparent 100%);
}
.rh-final::after, .r-cta::after, .rc-cta::after {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: radial-gradient(70% 90% at 50% 50%, rgba(10,10,11,0.45), rgba(10,10,11,0.92));
}
@media (max-width: 900px) { .hx-subhero__still { opacity: 0.5; } }

.rh-steps { position: relative; padding-left: 1.25rem !important; }
.rh-steps::before { content: ""; position: absolute; left: 0; top: 0.3rem; bottom: 0.3rem; width: 1px; background: var(--ox-line); }
.rh-steps::after { content: ""; position: absolute; left: 0; top: 0.3rem; bottom: 0.3rem; width: 1px; background: var(--color-accent); transform-origin: 50% 0; transform: scaleY(1); }
.rh-steps li { position: relative; }
.rh-steps li::before { content: ""; position: absolute; left: calc(-1.25rem - 3px); top: 1.55rem; width: 7px; height: 7px; border-radius: 50%; background: var(--ox-navy); border: 1px solid var(--color-accent); }
.rh-steps li:first-child::before { top: 0.3rem; }
.rh-steps__n { color: var(--color-accent) !important; }
@supports (animation-timeline: view()) {
  @media (prefers-reduced-motion: no-preference) {
    .rh-steps::after { animation: ox-rail linear both; animation-timeline: view(); animation-range: entry 40% cover 70%; }
    @keyframes ox-rail { from { transform: scaleY(0); } to { transform: scaleY(1); } }
  }
}

.rh-filmsec__frame { position: relative; }
.rh-filmsec__frame::before {
  content: ""; position: absolute; left: 6%; right: 6%; top: 8%; bottom: 4%; z-index: -1;
  background: radial-gradient(60% 60% at 50% 50%, rgba(var(--platform-dark-accent-rgb), 0.22), transparent 70%); filter: blur(40px);
}
.rh-filmsec__video { box-shadow: 0 40px 80px rgba(0, 0, 0, 0.55); }
@media (max-width: 640px) { .footer { padding-bottom: 4.5rem; } .footer::after { font-size: 28vw; } }

.rp-card { overflow: hidden; }
.rp-card__media { position: relative; display: block; aspect-ratio: 16 / 9; overflow: hidden; margin: calc(-1 * var(--rp-card-pad, 1.5rem)) calc(-1 * var(--rp-card-pad, 1.5rem)) 1.25rem; border-bottom: 1px solid var(--ox-line); }
.rp-card__media img { width: 100%; height: 100%; object-fit: cover; display: block; filter: brightness(0.86) saturate(0.9); transition: transform 700ms cubic-bezier(.2,.7,.2,1); }
.rp-card:hover .rp-card__media img { transform: scale(1.04); }
.rp-card__media .r-illus-chip { position: absolute; right: 0.625rem; bottom: 0.5rem; font-family: var(--font-mono); font-size: 0.6875rem; letter-spacing: 0.04em; color: rgba(250,250,250,0.55); }
.thermalpas-compare__sensor { background: var(--ox-raised-2); color: var(--color-text-primary); border: 1px solid var(--ox-line-strong); }
.thermalpas-compare__layer--conventional { background: var(--ox-raised-2); color: var(--color-text-secondary); border: 1px solid var(--ox-line-strong); }
.thermalpas-compare__layer--featured { background: rgba(var(--platform-dark-accent-rgb), 0.16); color: var(--platform-dark-accent-hover); border: 1px solid rgba(var(--platform-dark-accent-rgb), 0.45); }
.thermalpas-compare__layer span, .thermalpas-compare__layer--featured span { color: var(--color-text-secondary); }
.thermalpas-compare__surface { background: var(--ox-raised-2); color: var(--color-text-primary); border: 1px solid var(--ox-line-strong); }

.rh-hero__film { display: inline-flex; align-items: center; gap: 0.625rem; margin-top: 1.25rem; min-height: 44px; color: var(--color-text-primary); font-weight: 500; text-decoration: none; }
.rh-hero__play { width: 32px; height: 32px; border-radius: 50%; border: 1px solid var(--ox-line-strong); display: grid; place-items: center; transition: border-color 180ms ease, background-color 180ms ease; }
.rh-hero__play::before { content: ""; margin-left: 2px; border-left: 9px solid currentColor; border-top: 6px solid transparent; border-bottom: 6px solid transparent; }
.rh-hero__film:hover .rh-hero__play { border-color: var(--color-accent); background-color: rgba(var(--platform-dark-accent-rgb), 0.15); }
.rh-hero__film:hover { color: var(--color-accent-hover); }

.ox-subnav { position: sticky; top: var(--nav-h); z-index: 900; background: rgba(10, 10, 11, 0.82); -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px); border-bottom: 1px solid var(--ox-line); }
.ox-subnav__in { display: flex; gap: 0.25rem; overflow-x: auto; scrollbar-width: none; }
.ox-subnav__in::-webkit-scrollbar { display: none; }
.ox-subnav a { flex: none; display: inline-flex; align-items: center; min-height: 48px; padding: 0 0.875rem; font-size: 0.875rem; color: var(--color-text-secondary); text-decoration: none; border-bottom: 2px solid transparent; transition: color var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out); }
.ox-subnav a:hover { color: var(--color-text-primary); }
.ox-subnav a[aria-current="location"] { color: var(--color-text-primary); border-bottom-color: var(--color-accent); }
html:has(.ox-subnav) { --subnav-h: 49px; scroll-padding-top: calc(var(--nav-h) + var(--subnav-h) + 16px); }
.ox-subnav a:focus-visible { outline-offset: -2px; }

.hxi-est__row-icon { background: transparent !important; border: 0 !important; width: auto !important; }
.hxi-est__row-icon svg { color: var(--color-text-secondary); }
@media (min-width: 900px) { .hxi-est__summary { position: sticky; top: calc(var(--sticky-top) + 1.5rem); align-self: start; } }

.nav.x-nav,
.nav.x-nav.scrolled {
  background: linear-gradient(180deg, rgba(10, 10, 11, 0.9) 0%, rgba(10, 10, 11, 0.62) 58%, rgba(10, 10, 11, 0) 100%);
  -webkit-backdrop-filter: saturate(100%) blur(0px); backdrop-filter: saturate(100%) blur(0px);
  box-shadow: none;
  transition: backdrop-filter var(--dur-slow) var(--ease-out), -webkit-backdrop-filter var(--dur-slow) var(--ease-out);
}
.nav.x-nav.scrolled,
.nav.x-nav.x-menu-open { -webkit-backdrop-filter: saturate(140%) blur(16px); backdrop-filter: saturate(140%) blur(16px); }
.nav.x-nav::before {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background: rgba(10, 10, 11, 0.72);
  box-shadow: 0 1px 0 var(--ox-line), 0 18px 40px -28px rgba(0, 0, 0, 0.9);
  opacity: 0; transition: opacity var(--dur-slow) var(--ease-out);
}
.nav.x-nav.scrolled::before,
.nav.x-nav.x-menu-open::before { opacity: 1; }
.nav.x-nav.x-menu-open::before { background: rgba(10, 10, 11, 0.97); }
.nav.x-nav .nav__link, .nav.x-nav .ox-wordmark { text-shadow: 0 1px 10px rgba(10, 10, 11, 0.85), 0 0 2px rgba(10, 10, 11, 0.6); transition: color var(--dur-fast) var(--ease-out), background-color var(--dur-fast) var(--ease-out), text-shadow var(--dur-slow) var(--ease-out); }
.nav.x-nav.scrolled .nav__link, .nav.x-nav.scrolled .ox-wordmark, .nav.x-nav.x-menu-open .ox-wordmark { text-shadow: none; }

.nav__link {
  border-radius: 6px;
  transition: color var(--dur-fast) var(--ease-out), background-color var(--dur-fast) var(--ease-out);
}
.nav__link:hover { background: rgba(250, 250, 250, 0.05); color: var(--color-text-primary); }
.nav__link.active,
.nav__link[aria-current] { color: var(--color-text-primary); box-shadow: none; border-radius: 6px; }
.nav__link::after {
  content: ""; position: absolute; left: 0.75rem; right: 0.75rem; bottom: -0.375rem; height: 2px; border-radius: 2px;
  background: var(--color-accent); transform: scaleX(0); transform-origin: 50% 50%;
  transition: transform var(--dur-base) var(--ease-out);
}
.nav__link.active::after,
.nav__link[aria-current]::after { transform: scaleX(1); }
@media (max-width: 79.99875em) { .nav__link::after { left: 0.375rem; right: 0.375rem; } }
.nav__logo { border-radius: 8px; }
.nav__logo .nav__logo-mark { transition: transform var(--dur-base) var(--ease-out), box-shadow var(--dur-base) var(--ease-out); }
@media (hover: hover) and (pointer: fine) {
  .nav__logo:hover .nav__logo-mark { box-shadow: 0 0 0 4px rgba(var(--platform-dark-accent-rgb), 0.18); }
}

.nav__mobile-toggle { position: relative; color: var(--color-text-primary); }
.nav__mobile-toggle > svg { display: none; }
.nav__mobile-toggle::before,
.nav__mobile-toggle::after {
  content: ""; position: absolute; left: 50%; top: 50%; width: 18px; height: 1.5px; margin-left: -9px; border-radius: 2px;
  background: currentColor; transition: transform var(--dur-base) var(--ease-in-out);
}
.nav__mobile-toggle::before { transform: translateY(-3.5px); }
.nav__mobile-toggle::after  { transform: translateY(3.5px); }
.nav__mobile-toggle[aria-expanded="true"]::before { transform: rotate(45deg); }
.nav__mobile-toggle[aria-expanded="true"]::after  { transform: rotate(-45deg); }

.nav__mobile-menu { top: var(--nav-h, 72px); border-top: 1px solid var(--ox-line); padding-top: 0.5rem; }
.nav__mobile-link { transition: color var(--dur-fast) var(--ease-out); }
.nav__mobile-link[aria-current] { color: var(--color-text-primary); }
.nav__mobile-link[aria-current]::after {
  content: ""; width: 8px; height: 8px; margin-right: 0.25rem; border-radius: 50%; background: var(--color-accent); flex: none;
  box-shadow: 0 0 0 4px rgba(var(--platform-dark-accent-rgb), 0.18); transform: none;
}
.nav__mobile-cta { display: flex; flex-direction: column; gap: 0.75rem; }
.x-menu-meta {
  margin-top: auto; padding-top: 1.5rem; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.5rem 1rem;
  font-family: var(--font-mono); font-size: 0.8125rem; color: var(--color-text-secondary);
}
.x-menu-meta a { display: inline-flex; align-items: center; min-height: var(--tap-min); color: var(--color-text-primary); text-decoration: underline; text-decoration-color: var(--ox-line-strong); text-underline-offset: 4px; }
.x-menu-meta span { display: inline-flex; align-items: center; min-height: var(--tap-min); }
@media (prefers-reduced-motion: no-preference) {
  .nav__mobile-menu.open { animation: x-menu-in var(--dur-slow) var(--ease-out) both; }
  .nav__mobile-menu.open > * { animation: x-menu-item var(--dur-slow) var(--ease-out) both; }
  .nav__mobile-menu.open > :nth-child(2) { animation-delay: 30ms; }
  .nav__mobile-menu.open > :nth-child(3) { animation-delay: 60ms; }
  .nav__mobile-menu.open > :nth-child(4) { animation-delay: 90ms; }
  .nav__mobile-menu.open > :nth-child(5) { animation-delay: 120ms; }
  .nav__mobile-menu.open > :nth-child(n+6) { animation-delay: 150ms; }
  .nav__mobile-menu.open.x-closing { animation: x-menu-out 200ms var(--ease-in) both; }
  .nav__mobile-menu.open.x-closing > * { animation: none; }
}
@media (prefers-reduced-motion: reduce) {
  .nav__mobile-menu.open { animation: x-fade-in 160ms linear both; }
  .nav__mobile-menu.open.x-closing { animation: x-fade-out 120ms linear both; }
}
@keyframes x-menu-in   { from { opacity: 0; clip-path: inset(0 0 100% 0); } to { opacity: 1; clip-path: inset(0 0 0 0); } }
@keyframes x-menu-out  { from { opacity: 1; } to { opacity: 0; } }
@keyframes x-menu-item { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: none; } }
@keyframes x-fade-in   { from { opacity: 0; } to { opacity: 1; } }
@keyframes x-fade-out  { from { opacity: 1; } to { opacity: 0; } }

.skip-link { top: 0.75rem; transform: translateY(calc(-100% - 1rem)); transition: transform var(--dur-base) var(--ease-out); box-shadow: var(--shadow-md); }
.skip-link:focus, .skip-link:focus-visible { top: 0.75rem; transform: none; outline: 2px solid var(--color-text-primary); outline-offset: 2px; }

:focus-visible { outline: 2px solid var(--focus-color); outline-offset: 3px; }
.nav :focus-visible, .nav__mobile-menu :focus-visible, .footer :focus-visible { outline-color: var(--focus-color); }
.btn:focus-visible { outline-offset: 3px; }
.nav__mobile-menu .nav__mobile-link:focus-visible { outline-offset: -2px; border-radius: 6px; }
input:focus-visible, select:focus-visible, textarea:focus-visible { outline-offset: 1px; }

.btn {
  transition: background-color var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out),
              color var(--dur-fast) var(--ease-out), transform var(--dur-base) var(--ease-out), box-shadow var(--dur-base) var(--ease-out);
}
.btn--secondary:hover, .btn--secondary-light:hover { border-color: rgba(var(--platform-dark-muted-rgb), 0.55); }
@media (prefers-reduced-motion: no-preference) {
  .btn:active { transform: translateY(0) scale(0.98); transition-duration: var(--dur-instant); }
}
@media (prefers-reduced-motion: reduce) {
  .btn, .btn:hover, .btn:active { transform: none !important; }
}

.rc-link, .rc-prose a, .footer__contact a, .x-menu-meta a {
  transition: color var(--dur-fast) var(--ease-out), text-decoration-color var(--dur-fast) var(--ease-out);
}
.rc-link:hover, .rc-prose a:hover { text-decoration-color: currentColor; }
.rh-link svg, .rc-link svg, .r-feature__cta svg, a[class*="__cta"] svg { transition: transform var(--dur-base) var(--ease-out); }

.rc-field { border-radius: var(--radius-xl); }
.rc-field__media { transition: border-color var(--dur-fast) var(--ease-out); }
.rc-field__media img { transition: transform 700ms var(--ease-out), filter var(--dur-slow) var(--ease-out); }
.rc-field__title { transition: color var(--dur-fast) var(--ease-out); }
@media (hover: hover) and (pointer: fine) and (prefers-reduced-motion: no-preference) {
  .rc-field:hover .rc-field__media img { transform: scale(1.035); }
}
.rc-field:hover .rc-field__title, .rc-field:focus-visible .rc-field__title { color: var(--color-accent-hover); }
.rc-field:focus-visible { outline-offset: 6px; }

.fx-js .fx-rise { transform: translateY(12px); transition: opacity var(--dur-enter) var(--ease-out), transform var(--dur-enter) var(--ease-out); }
.fx-js .fx-rise.fx-in { transform: none; }

.footer::before {
  content: ""; position: absolute; top: -1px; left: 50%; width: min(720px, 80%); height: 1px; transform: translateX(-50%); z-index: 1;
  background: linear-gradient(90deg, transparent, rgba(var(--platform-dark-accent-rgb), 0.55), transparent);
  pointer-events: none;
}
.footer__col-label { margin-bottom: 0.75rem; }
.footer__col-link { position: relative; transition: color var(--dur-fast) var(--ease-out); }
.footer__col-link::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0.7rem; height: 1px; background: currentColor;
  transform: scaleX(0); transform-origin: 0 50%; transition: transform var(--dur-base) var(--ease-out); opacity: 0.5;
}
.footer__col-link:hover::after { transform: scaleX(1); }
.footer__col-link[aria-current] { color: var(--color-text-primary); }
.footer__col-link[aria-current]::before {
  content: ""; position: absolute; left: -0.875rem; top: 50%; width: 5px; height: 5px; margin-top: -2.5px; border-radius: 50%; background: var(--color-accent);
}
.footer__bottom { display: flex; justify-content: space-between; align-items: center; gap: 0.5rem 1.5rem; flex-wrap: wrap; }
.x-footer-top {
  display: inline-flex; align-items: center; gap: 0.5rem; min-height: var(--tap-min); padding-inline: 0;
  font-family: var(--font-mono); font-size: 0.8125rem; letter-spacing: 0.02em; color: var(--color-text-secondary);
  transition: color var(--dur-fast) var(--ease-out); border-radius: 6px;
}
.x-footer-top::after {
  content: ""; width: 7px; height: 7px; margin-top: 3px; border-left: 1.5px solid currentColor; border-top: 1.5px solid currentColor;
  transform: rotate(45deg); transition: transform var(--dur-base) var(--ease-out);
}
.x-footer-top:hover { color: var(--color-text-primary); }
@media (prefers-reduced-motion: no-preference) {
  .x-footer-top:hover::after { transform: translateY(-2px) rotate(45deg); }
}
@media (max-width: 480px) {
  .footer__main { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 2rem 1.25rem; }
  .footer__brand { grid-column: 1 / -1; }
  .footer__col-link { line-height: 1.35; }
  .footer__col-link[aria-current]::before { left: -0.625rem; }
}

.rc-prose { max-width: var(--measure-prose, 65ch); }
.rc-prose p + p { margin-top: 1.125em; }
.rc-kicker + .rc-h2 { margin-top: 0.75rem; }
.hx-subhero__lead { max-width: 58ch; }

.x-404-ways { margin: clamp(2.5rem, 5vw, 3.5rem) auto 0; max-width: 880px; display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0.75rem; text-align: left; }
.x-404-ways a {
  display: grid; gap: 0.375rem; padding: 1rem 1.125rem; border-radius: var(--radius-md);
  background: rgba(20, 20, 23, 0.72); border: 1px solid var(--ox-line); color: var(--color-text-primary);
  -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
  transition: border-color var(--dur-fast) var(--ease-out), background-color var(--dur-fast) var(--ease-out), transform var(--dur-base) var(--ease-out);
}
.x-404-ways a:hover { border-color: rgba(var(--platform-dark-accent-rgb), 0.5); background: rgba(27, 27, 30, 0.86); }
@media (hover: hover) and (pointer: fine) and (prefers-reduced-motion: no-preference) { .x-404-ways a:hover { transform: translateY(-2px); } }
.x-404-ways b { font-weight: 600; font-size: 0.9375rem; }
.x-404-ways span { font-size: 0.8125rem; line-height: 1.5; color: var(--color-text-secondary); }
.x-404-code { font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 0.04em; color: var(--color-text-secondary); margin-top: 2rem; }
@media (max-width: 760px) { .x-404-ways { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 340px) { .x-404-ways { grid-template-columns: minmax(0, 1fr); } }
.ox-404 { padding-block: calc(var(--nav-h) + 3rem) 4rem; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto !important; }
  .fx-telemetry__live::before, .ox-spec__dot::after { animation: none !important; }
  .rh-hero__still, .hx-subhero__still, .v3-404__still, .fx-thermal { animation: none !important; }
  .nav__link::after, .footer__col-link::after, .nav__mobile-toggle::before, .nav__mobile-toggle::after { transition: none; }
}

.hxi-pipe__stage { transition: transform var(--dur-base) var(--ease-out); }
.hxi-pipe__stage:focus-visible { outline-offset: 3px; }

@media (min-width: 600px) {
  .nav__mobile-menu { padding-inline: max(var(--gutter), calc((100% - 640px) / 2)); }
}

.nav.x-nav .nav__dropdown-toggle { text-shadow: 0 1px 10px rgba(10, 10, 11, 0.85), 0 0 2px rgba(10, 10, 11, 0.6); transition: color var(--dur-fast) var(--ease-out), background-color var(--dur-fast) var(--ease-out), text-shadow var(--dur-slow) var(--ease-out); }
.nav.x-nav.scrolled .nav__dropdown-toggle,
.nav.x-nav .nav__dropdown-toggle[aria-expanded="true"] { text-shadow: none; }
.nav__dropdown-toggle::after {
  content: ""; position: absolute; left: 0.75rem; right: 0.75rem; bottom: -0.375rem; height: 2px; border-radius: 2px;
  background: var(--color-accent); transform: scaleX(0); transform-origin: 50% 50%;
  transition: transform var(--dur-base) var(--ease-out);
}
.nav__dropdown-toggle.active::after { transform: scaleX(1); }
@media (max-width: 79.99875em) {
  .nav__dropdown-toggle { padding-inline: 0.375rem; }
  .nav__dropdown-toggle::after { left: 0.375rem; right: 0.375rem; }
}
.nav__mobile-menu .nav__mobile-section-label {
  margin: 0.75rem 0 0; padding: 0.75rem 0.25rem 0.25rem;
  font-family: var(--font-mono); font-size: 0.75rem; font-weight: 500; letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--color-text-secondary);
}
.nav__mobile-link--sub { font-size: 1.25rem; padding-left: 1.25rem; gap: 0.75rem; justify-content: flex-start; }
.nav__mobile-link--sub::after { margin-left: auto; }
.nav__mobile-link--sub .nav__dropdown-dot { margin-top: 0; }
.nav__mobile-link--sub + .nav__mobile-link:not(.nav__mobile-link--sub) { margin-top: 0.5rem; }