.system-spine {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, .95fr) minmax(0, 1.05fr);
  gap: clamp(28px, 6vw, 88px);
  min-height: min(820px, 118svh);
  margin: 64px 0 24px;
  padding: 24px;
  border: 1px solid rgba(136, 196, 214, .3);
  background: linear-gradient(135deg, #101b2a 0%, #162c3b 58%, #202536 100%);
  overflow: clip;
}

.system-spine-visual {
  position: sticky;
  top: 102px;
  align-self: start;
  min-height: min(560px, calc(100svh - 150px));
  display: grid;
  place-items: center;
  overflow: hidden;
  border: 1px solid rgba(136, 196, 214, .35);
  background: #0d1724;
}

.system-spine-visual::before,
.system-spine-visual::after {
  content: "";
  position: absolute;
  pointer-events: none;
}

.system-spine-visual::before {
  inset: 0;
  opacity: .45;
  background-image: linear-gradient(rgba(136, 196, 214, .11) 1px, transparent 1px), linear-gradient(90deg, rgba(136, 196, 214, .11) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: linear-gradient(to bottom, #000, transparent 90%);
}

.system-spine-visual::after {
  left: 12%;
  right: 12%;
  bottom: 12%;
  height: 1px;
  background: linear-gradient(90deg, #ff9b71, #ffd166, #54e1a4, #68c7ff);
  opacity: .8;
}

.system-spine-poster,
.system-spine-project-deck,
.system-spine-canvas,
.system-spine-fallback {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.system-spine-poster {
  z-index: 1;
  display: block;
  object-fit: cover;
  opacity: .95;
  transition: opacity .3s ease;
}

.system-spine-project-deck {
  z-index: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 66px 28px 28px;
  color: #f1f2ee;
  background: radial-gradient(circle at 82% 8%, rgba(104, 199, 255, .3), transparent 32%), radial-gradient(circle at 8% 88%, rgba(255, 155, 113, .2), transparent 34%), linear-gradient(145deg, #0d1724, #172e3c 62%, #24283b);
  transition: opacity .3s ease, visibility .3s ease;
}

.system-spine-project-deck-head {
  display: grid;
  gap: 7px;
  padding-bottom: 18px;
  border-bottom: 1px solid rgba(136, 196, 214, .32);
  font: 500 9px/1.4 "IBM Plex Mono", monospace;
  letter-spacing: .07em;
  text-transform: uppercase;
}

.system-spine-project-deck-head span { color: #ffd166; }
.system-spine-project-deck-head b { color: #d5e6ea; font-weight: 400; }

.system-spine-project-cards { display: grid; gap: 10px; margin: 20px 0 24px; }

.system-project-card {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  min-height: 76px;
  padding: 10px 12px 10px 10px;
  border: 1px solid rgba(136, 196, 214, .28);
  background: rgba(7, 18, 29, .58);
  box-shadow: inset 0 1px rgba(255, 255, 255, .06);
}

.system-project-mark {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  overflow: hidden;
  border: 1px solid rgba(214, 230, 234, .42);
  background: #09111b;
}

.system-project-mark img { display: block; width: 100%; height: 100%; object-fit: contain; }
.system-project-card-sktr .system-project-mark img { padding: 4px; }
.system-project-card strong { display: block; color: #f7fbfb; font-size: 13px; letter-spacing: .04em; }
.system-project-card span,
.system-project-card small { display: block; color: #aeb5b1; font: 400 9px/1.4 "IBM Plex Mono", monospace; letter-spacing: .04em; }
.system-project-card small { color: #9bb9c1; text-align: right; }
.system-project-card-srvia { border-left: 3px solid #54e1a4; background: linear-gradient(90deg, rgba(84, 225, 164, .16), rgba(7, 18, 29, .58) 48%); }
.system-project-card-sktr { border-left: 3px solid #68c7ff; background: linear-gradient(90deg, rgba(104, 199, 255, .16), rgba(7, 18, 29, .58) 48%); }
.system-project-card-drone { border-left: 3px solid #ff9b71; background: linear-gradient(90deg, rgba(255, 155, 113, .16), rgba(7, 18, 29, .58) 48%); }

.system-spine-project-deck-foot {
  display: flex;
  align-items: center;
  gap: 9px;
  color: #9bb9c1;
  font: 500 8px/1.4 "IBM Plex Mono", monospace;
  letter-spacing: .08em;
}

.system-spine-project-deck-foot i { color: #ffd166; font-style: normal; }

.system-spine-canvas {
  z-index: 2;
  display: none;
  width: 100%;
  height: 100%;
}

.system-spine-fallback {
  z-index: 2;
  display: grid;
  place-items: center;
  pointer-events: none;
}

.system-spine-fallback::before,
.system-spine-fallback::after {
  content: "";
  position: absolute;
  width: 34%;
  aspect-ratio: 1;
  border: 1px solid rgba(47, 168, 117, .8);
  border-radius: 50%;
  transform: rotate(28deg) scaleY(.36);
}

.system-spine-fallback::after {
  width: 21%;
  border-color: rgba(182, 108, 70, .85);
  transform: rotate(-34deg) scaleY(.45);
}

.system-spine-core {
  position: relative;
  width: 18%;
  aspect-ratio: 1;
  border: 1px solid #f1f2ee;
  background: #2fa875;
  box-shadow: 0 0 0 12px rgba(47, 168, 117, .12), 0 0 42px rgba(47, 168, 117, .5);
  transform: rotate(45deg);
}

.system-spine-core::before,
.system-spine-core::after {
  content: "";
  position: absolute;
  background: #f1f2ee;
}

.system-spine-core::before {
  left: 50%;
  top: -170%;
  width: 1px;
  height: 440%;
}

.system-spine-core::after {
  top: 50%;
  left: -170%;
  width: 440%;
  height: 1px;
}

.system-spine-visual[data-spine-mode="model"] .system-spine-poster,
.system-spine-visual[data-spine-mode="model"] .system-spine-fallback {
  opacity: 0;
  visibility: hidden;
}

.system-spine-visual[data-spine-mode="model"] .system-spine-canvas {
  display: block;
}

.system-spine-visual[data-spine-mode="model"] .system-spine-project-deck {
  inset: auto 0 0;
  min-height: 0;
  padding: 12px;
  background: linear-gradient(180deg, transparent, rgba(10, 20, 32, .97) 42%);
}

.system-spine-visual[data-spine-mode="model"] .system-spine-project-deck-head,
.system-spine-visual[data-spine-mode="model"] .system-spine-project-deck-foot {
  display: none;
}

.system-spine-visual[data-spine-mode="model"] .system-spine-project-cards {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 6px;
  margin: 20px 0 0;
}

.system-spine-visual[data-spine-mode="model"] .system-project-card {
  grid-template-columns: 28px minmax(0, 1fr);
  min-height: 48px;
  gap: 7px;
  padding: 6px;
  background: rgba(32, 35, 33, .78);
}

.system-spine-visual[data-spine-mode="model"] .system-project-mark {
  width: 28px;
  height: 28px;
}

.system-spine-visual[data-spine-mode="model"] .system-project-card strong { font-size: 9px; }
.system-spine-visual[data-spine-mode="model"] .system-project-card span { font-size: 7px; }
.system-spine-visual[data-spine-mode="model"] .system-project-card small { display: none; }

.system-spine-visual[data-spine-mode="poster"] .system-spine-canvas {
  display: none;
}

.system-spine-visual[data-poster-error="true"] .system-spine-poster {
  display: none;
}

.system-spine-readout {
  position: absolute;
  z-index: 4;
  left: 18px;
  right: 18px;
  top: 16px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  color: #aeb5b1;
  font: 400 9px/1.4 "IBM Plex Mono", monospace;
  text-transform: uppercase;
  letter-spacing: .06em;
}

.system-spine-readout strong {
  color: #54e1a4;
  font-weight: 500;
}

.system-spine-copy {
  align-self: start;
  padding: clamp(12px, 3vw, 36px) 0;
}

.system-spine-copy .kicker {
  color: #aeb5b1;
}

.system-spine-copy h3 {
  max-width: 470px;
  margin: 0 0 18px;
  color: #f1f2ee;
  font-size: clamp(30px, 4vw, 54px);
  line-height: 1.02;
  font-weight: 500;
  text-wrap: balance;
}

.system-spine-description {
  max-width: 440px;
  margin: 0 0 38px;
  color: #aeb5b1;
  font-size: 14px;
}

.system-spine-stages {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid #454b48;
}

.system-spine-stages li {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 0;
  border-bottom: 1px solid #454b48;
  color: #aeb5b1;
  transition: color .2s ease, padding .2s ease;
}

.system-spine-stages li::before {
  content: attr(data-stage-index);
  color: #b66c46;
  font: 500 10px "IBM Plex Mono", monospace;
}

.system-spine-stages li strong {
  display: block;
  margin-bottom: 4px;
  color: inherit;
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .04em;
}

.system-spine-stages li span {
  display: block;
  font-size: 11px;
  line-height: 1.5;
}

.system-spine-stages li[data-active="true"] {
  padding-left: 12px;
  color: #f1f2ee;
  box-shadow: inset 2px 0 #2fa875;
}

.system-spine-stages li:nth-child(2)[data-active="true"] { box-shadow: inset 2px 0 #68c7ff; }
.system-spine-stages li:nth-child(3)[data-active="true"] { box-shadow: inset 2px 0 #ff9b71; }

.system-spine-status {
  min-height: 18px;
  margin: 20px 0 0;
  color: #2fa875;
  font: 500 9px/1.4 "IBM Plex Mono", monospace;
  text-transform: uppercase;
  letter-spacing: .06em;
}

@media (max-width: 980px) {
  .system-spine {
    grid-template-columns: 1fr;
    min-height: auto;
    margin-top: 44px;
    padding: 16px;
  }

  .system-spine-visual {
    position: relative;
    top: auto;
    min-height: 390px;
  }

  .system-spine-copy {
    padding: 8px 0 16px;
  }
}

@media (max-width: 640px) {
  .system-spine {
    margin-top: 32px;
    padding: 12px;
  }

  .system-spine-visual {
    min-height: 310px;
  }

  .system-spine-readout {
    left: 12px;
    right: 12px;
    top: 12px;
    font-size: 8px;
  }

  .system-spine-description {
    margin-bottom: 26px;
    font-size: 13px;
  }

  .system-spine-project-deck { padding: 58px 14px 20px; }
  .system-project-card { grid-template-columns: 40px minmax(0, 1fr); min-height: 66px; padding: 8px; }
  .system-project-mark { width: 36px; height: 36px; }
  .system-project-card small { grid-column: 2; text-align: left; }
  .system-spine-project-deck-foot { gap: 5px; font-size: 7px; }
}

@media (prefers-reduced-motion: reduce) {
  .system-spine-poster,
  .system-spine-project-deck,
  .system-spine-stages li {
    transition: none;
  }
}