.mep-systems {
  --mep-ink: #071f3d;
  --mep-copy: #47647d;
  --mep-blue: #087fd5;
  --mep-sky: #8bcdf4;
  position: relative;
  isolation: isolate;
  overflow: hidden;
  color: var(--mep-ink);
  background: #fbfdff;
  border-block: 1px solid rgba(87, 154, 202, 0.16);
}

.mep-system-rail {
  position: absolute;
  z-index: 2;
  top: 0;
  left: 50%;
  width: min(1180px, calc(100% - 48px));
  height: 1px;
  overflow: hidden;
  transform: translateX(-50%);
  background: linear-gradient(90deg, transparent, rgba(26, 138, 212, 0.18) 18%, rgba(26, 138, 212, 0.18) 82%, transparent);
}

.mep-system-rail span {
  position: absolute;
  top: 0;
  left: -18%;
  width: 18%;
  height: 1px;
  background: linear-gradient(90deg, transparent, #1d9df0, transparent);
  animation: mepRail 8s linear infinite;
}

.mep-feature {
  position: relative;
  min-height: 620px;
  overflow: hidden;
}

.mep-feature + .mep-feature {
  border-top: 1px solid rgba(69, 142, 194, 0.14);
}

.mep-feature::before {
  position: absolute;
  z-index: -1;
  top: 50%;
  width: 510px;
  height: 510px;
  content: "";
  border: 1px solid rgba(71, 170, 231, 0.1);
  border-radius: 50%;
  transform: translateY(-50%);
  background: repeating-radial-gradient(circle, transparent 0 66px, rgba(54, 153, 218, 0.045) 67px 68px);
}

.mep-feature::after {
  position: absolute;
  z-index: -2;
  inset: 0;
  content: "";
  pointer-events: none;
  background-image: linear-gradient(rgba(40, 135, 199, 0.035) 1px, transparent 1px), linear-gradient(90deg, rgba(40, 135, 199, 0.035) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(90deg, transparent 3%, #000 25%, #000 75%, transparent 97%);
}

.mep-feature-fan,
.mep-feature-pipe {
  background: linear-gradient(120deg, #fff 0%, #f9fcff 57%, #eef8ff 100%);
}

.mep-feature-panel {
  background: linear-gradient(118deg, #eaf6fe 0%, #f6fbff 46%, #fff 100%);
}

.mep-feature-fan::before,
.mep-feature-pipe::before {
  left: -125px;
}

.mep-feature-panel::before {
  right: -125px;
}

.mep-feature-inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(320px, 0.88fr);
  grid-template-areas: "visual copy";
  align-items: center;
  gap: clamp(48px, 7vw, 116px);
  min-height: 620px;
  padding-block: 74px;
}

.mep-feature-panel .mep-feature-inner {
  grid-template-columns: minmax(320px, 0.86fr) minmax(0, 1.14fr);
  grid-template-areas: "copy visual";
}

.mep-feature-copy {
  grid-area: copy;
  position: relative;
  z-index: 4;
  max-width: 475px;
}

.mep-feature-copy::before {
  display: block;
  width: 54px;
  height: 3px;
  margin-block-end: 27px;
  content: "";
  border-radius: 20px;
  background: linear-gradient(90deg, #087fd5, #78c7f4);
  box-shadow: 0 0 18px rgba(14, 143, 225, 0.24);
}

.mep-kicker {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 15px;
  color: #167fbf;
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  line-height: 1.4;
  text-transform: uppercase;
}

.mep-kicker span {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 24px;
  color: #075d94;
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  border: 1px solid rgba(15, 132, 205, 0.25);
  border-radius: 999px;
  background: rgba(236, 248, 255, 0.8);
}

.mep-feature-copy h2 {
  max-width: 9em;
  margin: 0 0 20px;
  color: var(--mep-ink);
  font-size: clamp(2.35rem, 4.1vw, 4.8rem);
  font-weight: 760;
  letter-spacing: -0.055em;
  line-height: 0.98;
}

.mep-feature-copy > p:not(.mep-kicker) {
  max-width: 39ch;
  margin: 0;
  color: var(--mep-copy);
  font-size: clamp(1rem, 1.18vw, 1.13rem);
  line-height: 1.75;
}

.mep-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 30px;
}

.mep-tags span {
  padding: 8px 13px;
  color: #214f70;
  font-size: 0.72rem;
  font-weight: 750;
  letter-spacing: 0.06em;
  border: 1px solid rgba(65, 143, 195, 0.2);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.64);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(8px);
}

.mep-visual {
  grid-area: visual;
  position: relative;
  display: grid;
  place-items: center;
  min-width: 0;
  min-height: 470px;
  isolation: isolate;
}

.mep-visual::before {
  position: absolute;
  z-index: -2;
  width: min(88%, 530px);
  aspect-ratio: 1;
  content: "";
  border-radius: 50%;
  background: radial-gradient(circle, rgba(99, 193, 243, 0.17) 0%, rgba(99, 193, 243, 0.07) 42%, transparent 69%);
  filter: blur(3px);
}

.mep-visual::after {
  position: absolute;
  z-index: -1;
  right: 11%;
  bottom: 8%;
  left: 11%;
  height: 52px;
  content: "";
  border-radius: 50%;
  background: radial-gradient(ellipse, rgba(35, 89, 126, 0.19), transparent 70%);
  filter: blur(18px);
  opacity: 0.66;
}

.mep-technical-frame {
  position: absolute;
  z-index: -1;
  width: min(84%, 500px);
  aspect-ratio: 1;
  border: 1px solid rgba(43, 146, 211, 0.16);
  border-radius: 50%;
  background: repeating-radial-gradient(circle at center, transparent 0 54px, rgba(43, 146, 211, 0.06) 55px 56px);
  animation: mepAmbient 7s ease-in-out infinite;
}

.mep-technical-frame::before,
.mep-technical-frame::after {
  position: absolute;
  top: 50%;
  left: 50%;
  content: "";
  background: rgba(42, 145, 209, 0.16);
  transform: translate(-50%, -50%);
}

.mep-technical-frame::before {
  width: 118%;
  height: 1px;
}

.mep-technical-frame::after {
  width: 1px;
  height: 118%;
}

.mep-technical-frame i {
  position: absolute;
  width: 12px;
  height: 12px;
  border-color: rgba(12, 129, 204, 0.55);
  border-style: solid;
}

.mep-technical-frame i:nth-child(1) { top: -1px; left: -1px; border-width: 1px 0 0 1px; }
.mep-technical-frame i:nth-child(2) { top: -1px; right: -1px; border-width: 1px 1px 0 0; }
.mep-technical-frame i:nth-child(3) { right: -1px; bottom: -1px; border-width: 0 1px 1px 0; }
.mep-technical-frame i:nth-child(4) { bottom: -1px; left: -1px; border-width: 0 0 1px 1px; }

.mep-object {
  position: relative;
  z-index: 2;
  display: grid;
  place-items: center;
  width: 100%;
  transform: translateZ(0);
  user-select: none;
}

.mep-object video,
.mep-object img {
  grid-area: 1 / 1;
  display: block;
  width: auto;
  max-width: 100%;
  height: auto;
  max-height: 100%;
  object-fit: contain;
  transform: translateZ(0);
  filter: drop-shadow(0 22px 19px rgba(29, 66, 94, 0.2));
}

.mep-visual-fan .mep-object video,
.mep-visual-fan .mep-object img {
  width: min(530px, 92%);
}

.mep-visual-panel .mep-object video,
.mep-visual-panel .mep-object img {
  width: min(390px, 70%);
}

.mep-visual-pipe .mep-object video,
.mep-visual-pipe .mep-object img {
  width: min(629px, 99%);
  max-width: none;
}

.mep-visual-pipe .mep-technical-frame {
  width: min(76%, 440px);
}

.mep-visual-index {
  position: absolute;
  z-index: 3;
  inset-inline-start: 4%;
  bottom: 4%;
  color: rgba(12, 85, 132, 0.22);
  font-size: clamp(4rem, 8vw, 7.5rem);
  font-weight: 800;
  letter-spacing: -0.08em;
  line-height: 1;
}

.mep-object video {
  display: block;
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
}

.mep-fallback {
  display: block !important;
  visibility: visible;
  opacity: 1;
}

.mep-systems.media-ready:not(.use-fallback) .mep-object video {
  visibility: visible;
}

.mep-systems.media-ready:not(.use-fallback) .mep-object.is-video-playing video {
  opacity: 1;
}

.mep-systems.media-ready:not(.use-fallback) .mep-object.is-video-playing .mep-fallback {
  visibility: hidden;
  opacity: 0;
}

.mep-systems.use-fallback .mep-object video {
  visibility: hidden;
  opacity: 0;
}

.mep-systems.use-fallback .mep-fallback {
  display: block !important;
  visibility: visible;
  opacity: 1;
}

html[dir="rtl"] .mep-feature-copy {
  text-align: right;
}

html[dir="rtl"] .mep-feature-copy h2 {
  max-width: 10.5em;
  font-size: clamp(2.2rem, 3.75vw, 4.25rem);
  letter-spacing: 0;
  line-height: 1.17;
}

html[dir="rtl"] .mep-kicker,
html[dir="rtl"] .mep-tags {
  justify-content: flex-start;
}

html[dir="rtl"] .mep-kicker {
  font-size: 0.78rem;
  letter-spacing: 0;
  line-height: 1.7;
}

html[dir="rtl"] .mep-feature-copy > p:not(.mep-kicker) {
  max-width: 42ch;
  line-height: 1.85;
}

html[dir="rtl"] .mep-tags span {
  font-size: 0.76rem;
  letter-spacing: 0;
  line-height: 1.4;
}

@keyframes mepRail {
  to { left: 100%; }
}

@keyframes mepAmbient {
  0%, 100% { opacity: 0.62; transform: scale(0.985); }
  50% { opacity: 1; transform: scale(1.015); }
}

@media (max-width: 1180px) {
  .mep-feature,
  .mep-feature-inner {
    min-height: 570px;
  }

  .mep-feature-inner {
    gap: clamp(34px, 5vw, 70px);
  }

  .mep-visual {
    min-height: 420px;
  }
}

@media (max-width: 900px) {
  .mep-feature-inner,
  .mep-feature-panel .mep-feature-inner {
    grid-template-columns: minmax(0, 1fr) minmax(270px, 0.86fr);
    gap: 30px;
  }

  .mep-feature-panel .mep-feature-inner {
    grid-template-columns: minmax(270px, 0.86fr) minmax(0, 1fr);
  }

  .mep-feature-copy h2 {
    font-size: clamp(2.15rem, 5vw, 3.4rem);
  }

  .mep-visual {
    min-height: 390px;
  }
}

@media (max-width: 760px) {
  .mep-system-rail {
    width: calc(100% - 28px);
  }

  .mep-feature {
    min-height: 0;
  }

  .mep-feature::before {
    width: 360px;
    height: 360px;
  }

  .mep-feature::after {
    background-size: 36px 36px;
  }

  .mep-feature-inner,
  .mep-feature-panel .mep-feature-inner {
    grid-template-columns: 1fr;
    grid-template-areas: "visual" "copy";
    gap: 10px;
    min-height: 0;
    padding-block: 58px 70px;
  }

  .mep-feature-copy {
    max-width: 560px;
    padding-inline: 3px;
  }

  .mep-feature-copy::before {
    margin-block-end: 21px;
  }

  .mep-feature-copy h2 {
    max-width: 11em;
    margin-bottom: 16px;
    font-size: clamp(2.35rem, 11vw, 3.75rem);
  }

  html[dir="rtl"] .mep-feature-copy h2 {
    font-size: clamp(2.15rem, 9.8vw, 3.4rem);
    line-height: 1.18;
  }

  .mep-feature-copy > p:not(.mep-kicker) {
    font-size: 1rem;
    line-height: 1.65;
  }

  .mep-tags {
    margin-top: 24px;
  }

  .mep-visual {
    min-height: 355px;
  }

  .mep-visual-fan .mep-object video,
  .mep-visual-fan .mep-object img {
    width: min(430px, 95%);
  }

  .mep-visual-panel .mep-object video,
  .mep-visual-panel .mep-object img {
    width: min(320px, 69%);
  }

  .mep-visual-pipe .mep-object video,
  .mep-visual-pipe .mep-object img {
    width: min(553px, 114%);
  }

  .mep-visual-index {
    inset-inline-start: 0;
    bottom: 2%;
    font-size: 4.5rem;
  }
}

@media (max-width: 430px) {
  .mep-feature-inner,
  .mep-feature-panel .mep-feature-inner {
    padding-block: 48px 62px;
  }

  .mep-visual {
    min-height: 300px;
  }

  .mep-visual-panel {
    min-height: 330px;
  }

  .mep-feature-copy h2 {
    font-size: clamp(2.15rem, 12vw, 3rem);
  }

  .mep-visual-pipe .mep-object video,
  .mep-visual-pipe .mep-object img {
    width: 126%;
  }
}

html[data-motion="off"] .mep-system-rail span,
html[data-motion="off"] .mep-technical-frame {
  animation-play-state: paused;
}

.mep-object video,
.mep-fallback {
  transition: opacity 120ms linear;
}
@media (prefers-reduced-motion: reduce) {
  .mep-object video,
  .mep-fallback { transition: none !important; }
}

/* Mobile performance: render each long MEP scene only when it approaches the viewport. */
@media (max-width: 760px) {
  .mep-feature {
    content-visibility: auto;
    contain-intrinsic-size: 760px;
  }
  .mep-tags span {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
  .mep-visual::before {
    filter: none;
    opacity: .72;
  }
  .mep-visual::after {
    filter: none;
    opacity: .34;
    height: 34px;
  }
  .mep-object video,
  .mep-object img {
    filter: drop-shadow(0 12px 12px rgba(29,66,94,.13));
  }
  .mep-technical-frame { animation-duration: 11s; }
  .mep-system-rail span { animation-duration: 12s; }
}
@media (max-width: 430px) {
  .mep-feature { contain-intrinsic-size: 690px; }
}


/* Production performance guard: decorative scene motion runs only while an MEP visual is active. */
.mep-system-rail span,
.mep-technical-frame {
  animation-play-state: paused;
}
.mep-systems.is-media-active .mep-system-rail span,
.mep-systems.is-media-active .mep-technical-frame {
  animation-play-state: running;
}
html[data-motion="off"] .mep-system-rail span,
html[data-motion="off"] .mep-technical-frame {
  animation-play-state: paused !important;
}
@media (max-width: 760px) {
  .mep-object video,
  .mep-object img {
    filter: none;
  }
}