.signal-hero {
  --sg-paper: #f5f3ec;
  --sg-ink: #0a0b09;
  --sg-lime: #b8ff1f;
  --sg-line: rgba(184,255,31,.26);
  position: relative;
  min-height: calc(100svh - 72px);
  margin-top: 72px;
  overflow: hidden;
  background: var(--sg-ink);
  color: var(--sg-paper);
  isolation: isolate;
}

.signal-hero::before {
  content: "";
  position: absolute;
  z-index: 0;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(90deg,transparent 49.95%,rgba(255,255,255,.025) 50%,transparent 50.05%),
    radial-gradient(circle at 71% 48%,rgba(184,255,31,.07),transparent 27%);
}

.signal-noise {
  position: absolute;
  z-index: 1;
  inset: 0;
  pointer-events: none;
  opacity: .2;
  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='.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.24'/%3E%3C/svg%3E");
  mix-blend-mode: soft-light;
}

.signal-meta {
  position: absolute;
  z-index: 12;
  inset: 27px 32px auto;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  color: rgba(245,243,236,.5);
  font: 600 8px/1 var(--mono);
  letter-spacing: .11em;
}

.signal-layout {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: minmax(430px,.92fr) minmax(590px,1.08fr);
  min-height: calc(100svh - 72px);
}

.signal-copy {
  position: relative;
  z-index: 5;
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-width: 0;
  padding: 100px clamp(28px,4.1vw,72px) 58px max(32px,calc((100vw - 1380px)/2));
}

.signal-eyebrow {
  display: flex;
  align-items: center;
  gap: 11px;
  margin: 0 0 30px;
  color: var(--sg-lime);
  font: 600 9px/1 var(--mono);
  letter-spacing: .1em;
  text-transform: uppercase;
}

.signal-eyebrow > span {
  position: relative;
  width: 14px;
  height: 14px;
  flex: none;
}

.signal-eyebrow > span::before,
.signal-eyebrow > span::after {
  content: "";
  position: absolute;
  inset: 50% auto auto 50%;
  background: currentColor;
  transform: translate(-50%,-50%);
}

.signal-eyebrow > span::before { width: 14px; height: 4px; }
.signal-eyebrow > span::after { width: 4px; height: 14px; }

.signal-copy h1 {
  max-width: 690px;
  margin: 0;
  font-size: clamp(65px,6.5vw,108px);
  font-weight: 850;
  line-height: .78;
  letter-spacing: -.078em;
  text-wrap: balance;
}

.signal-copy h1 em {
  position: relative;
  z-index: 0;
  color: var(--sg-lime);
  font-family: var(--serif);
  font-weight: 500;
  letter-spacing: -.055em;
}

.signal-copy h1 em::after {
  content: "";
  position: absolute;
  z-index: -1;
  inset: auto -.03em .03em;
  height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  animation: signal-line-in .9s .55s cubic-bezier(.2,.8,.2,1) forwards;
}

.signal-lead {
  max-width: 580px;
  margin: 34px 0 0;
  color: rgba(245,243,236,.64);
  font-size: clamp(15px,1.18vw,18px);
  line-height: 1.55;
}

.signal-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 26px;
  margin-top: 38px;
}

.signal-cta {
  display: inline-flex;
  min-width: 230px;
  min-height: 54px;
  align-items: center;
  justify-content: space-between;
  gap: 34px;
  padding: 14px 17px;
  background: var(--sg-lime);
  color: var(--sg-ink);
  border: 1px solid var(--sg-lime);
  font: 600 9px/1 var(--mono);
  letter-spacing: .08em;
  text-decoration: none;
  text-transform: uppercase;
  transition: background .2s,color .2s,transform .15s;
}

.signal-cta:hover { background: transparent; color: var(--sg-lime); }
.signal-cta b { font-size: 15px; }

.signal-text-link {
  color: rgba(245,243,236,.7);
  font: 600 9px/1 var(--mono);
  letter-spacing: .07em;
  text-underline-offset: 6px;
  text-transform: uppercase;
}

.signal-text-link:hover { color: var(--sg-lime); }

.signal-positioning {
  display: flex;
  align-items: center;
  gap: 14px;
  width: max-content;
  margin-top: clamp(42px,7vh,78px);
  padding-top: 15px;
  border-top: 1px solid rgba(245,243,236,.18);
  color: rgba(245,243,236,.45);
  font: 600 8px/1 var(--mono);
  letter-spacing: .09em;
  text-transform: uppercase;
}

.signal-positioning i { color: var(--sg-lime); font-size: 14px; font-style: normal; }

.signal-stage {
  --operator-x: 86%;
  --operator-y: 79%;
  --signal-progress: 0;
  position: relative;
  min-width: 0;
  min-height: 690px;
  overflow: hidden;
  border-left: 1px solid rgba(245,243,236,.13);
  touch-action: none;
  cursor: crosshair;
  background:
    linear-gradient(rgba(245,243,236,.038) 1px,transparent 1px),
    linear-gradient(90deg,rgba(245,243,236,.038) 1px,transparent 1px);
  background-size: 40px 40px;
}

.signal-stage::before {
  content: "";
  position: absolute;
  z-index: 0;
  inset: 0;
  pointer-events: none;
  opacity: calc(.12 + var(--signal-progress) * .3);
  background: radial-gradient(circle at 56% 50%,rgba(184,255,31,.34),transparent 22%);
  transition: opacity .3s;
}

.signal-stage::after {
  content: "";
  position: absolute;
  z-index: 9;
  inset: 0;
  pointer-events: none;
  opacity: 0;
  background: repeating-linear-gradient(0deg,transparent 0 5px,rgba(184,255,31,.08) 6px,transparent 7px);
  mix-blend-mode: screen;
}

.signal-stage.is-dragging::after { opacity: .5; animation: signal-scan .16s steps(2) infinite; }

.signal-stage-head {
  position: absolute;
  z-index: 12;
  inset: 27px 29px auto;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  color: rgba(245,243,236,.45);
  font: 600 8px/1 var(--mono);
  letter-spacing: .1em;
}

.signal-stage-head [data-signal-status] { color: var(--sg-lime); text-align: right; }

.signal-network {
  position: absolute;
  z-index: 2;
  inset: 0;
  width: 100%;
  max-width: none;
  height: 100%;
  overflow: visible;
  pointer-events: none;
}

.signal-input-path,
.signal-output-path {
  fill: none;
  stroke: var(--sg-lime);
  stroke-width: 1.25;
  vector-effect: non-scaling-stroke;
}

.signal-input-path {
  opacity: calc(.24 + var(--signal-progress) * .74);
  stroke-dasharray: 5 7;
  transition: opacity .2s;
}

.signal-output-path {
  opacity: .2;
  stroke-width: 2;
  stroke-dasharray: 800;
  stroke-dashoffset: 800;
  transition: stroke-dashoffset .85s cubic-bezier(.2,.8,.2,1),opacity .25s;
}

.signal-stage.is-aligned .signal-output-path { opacity: 1; stroke-dashoffset: 0; }

.signal-tethers { opacity: 0; transition: opacity .16s; }
.signal-stage:hover .signal-tethers,
.signal-stage.is-dragging .signal-tethers { opacity: .22; }
.signal-stage.is-dragging .signal-tethers { opacity: .62; }
.signal-tethers line { stroke: var(--sg-lime); stroke-width: .75; vector-effect: non-scaling-stroke; }

.signal-focus {
  position: absolute;
  z-index: 1;
  left: 56%;
  top: 50%;
  display: grid;
  width: clamp(118px,10vw,154px);
  aspect-ratio: 1;
  place-items: center;
  color: rgba(184,255,31,.48);
  border: 1px dashed currentColor;
  transform: translate(-50%,-50%) rotate(calc(var(--signal-progress) * 45deg));
  transition: color .25s,transform .3s;
}

.signal-focus::before,
.signal-focus::after {
  content: "";
  position: absolute;
  background: currentColor;
}
.signal-focus::before { left: -23px; right: -23px; top: 50%; height: 1px; }
.signal-focus::after { top: -23px; bottom: -23px; left: 50%; width: 1px; }
.signal-focus span { font: 600 7px/1.35 var(--mono); letter-spacing: .1em; text-align: center; }
.signal-stage.is-aligned .signal-focus { color: rgba(184,255,31,.14); }

.signal-node,
.signal-output {
  position: absolute;
  z-index: 4;
  left: var(--node-x);
  top: var(--node-y);
  width: clamp(130px,11vw,170px);
  min-height: 77px;
  padding: 11px 12px 10px;
  background: rgba(10,11,9,.94);
  border: 1px solid rgba(184,255,31,.42);
  transform: translate(-50%,-50%);
  transition: border-color .25s,background .25s,box-shadow .25s;
}

.signal-node small,
.signal-output small {
  display: block;
  color: rgba(245,243,236,.38);
  font: 600 6px/1 var(--mono);
  letter-spacing: .1em;
}

.signal-node strong,
.signal-output strong {
  display: block;
  margin-top: 10px;
  color: var(--sg-lime);
  font: 700 clamp(12px,1vw,15px)/1 var(--mono);
  letter-spacing: -.03em;
}

.signal-node > span,
.signal-output > span {
  display: block;
  margin-top: 7px;
  color: rgba(245,243,236,.48);
  font: 500 6px/1 var(--mono);
  letter-spacing: .06em;
  text-transform: uppercase;
}

.signal-node { animation: signal-node-float 4.8s ease-in-out infinite; }
.signal-node-what { animation-delay: -1.7s; }
.signal-node-how { animation-delay: -3.2s; }

.signal-stage.is-dragging:not(.is-aligned) .signal-node { animation: signal-node-glitch .14s steps(2) infinite; }
.signal-stage.is-aligned .signal-node {
  animation: none;
  border-color: rgba(184,255,31,.75);
  background: #0d0f0b;
}

.signal-output {
  --node-x: 87%;
  --node-y: 50%;
  opacity: .3;
  border-color: rgba(245,243,236,.16);
  transition: opacity .3s,border-color .3s,background .3s,box-shadow .3s;
}

.signal-stage.is-aligned .signal-output {
  opacity: 1;
  background: var(--sg-lime);
  border-color: var(--sg-lime);
  box-shadow: 0 0 50px rgba(184,255,31,.16);
}
.signal-stage.is-aligned .signal-output small,
.signal-stage.is-aligned .signal-output > span { color: rgba(10,11,9,.58); }
.signal-stage.is-aligned .signal-output strong { color: var(--sg-ink); }

.signal-operator {
  position: absolute;
  z-index: 8;
  left: var(--operator-x);
  top: var(--operator-y);
  display: grid;
  width: clamp(92px,8.5vw,126px);
  aspect-ratio: 1;
  place-items: center;
  padding: 0;
  background: var(--sg-lime);
  color: var(--sg-ink);
  border: 0;
  border-radius: 0;
  box-shadow: 0 0 calc(24px + var(--signal-progress) * 70px) rgba(184,255,31,calc(.1 + var(--signal-progress) * .18));
  transform: translate(-50%,-50%);
  cursor: grab;
  user-select: none;
  transition: box-shadow .25s,scale .25s;
}

.signal-operator:active { cursor: grabbing; }
.signal-operator:focus-visible { outline: 2px solid var(--sg-paper); outline-offset: 5px; }
.signal-stage.is-dragging .signal-operator { animation: signal-operator-glitch .13s steps(2) infinite; }
.signal-stage.is-aligned .signal-operator { scale: 1.06; animation: none; }

.signal-mark {
  position: relative;
  display: block;
  width: 58%;
  aspect-ratio: 1;
  transition: transform .65s cubic-bezier(.2,.9,.2,1.2);
}

.signal-mark::before,
.signal-mark::after {
  content: "";
  position: absolute;
  inset: 50% auto auto 50%;
  background: currentColor;
  transform: translate(-50%,-50%);
}
.signal-mark::before { width: 100%; height: 29%; }
.signal-mark::after { width: 29%; height: 100%; }
.signal-stage.is-aligned .signal-mark { transform: rotate(45deg); }

.signal-operator small {
  position: absolute;
  left: 50%;
  bottom: -22px;
  color: var(--sg-lime);
  font: 600 6px/1 var(--mono);
  letter-spacing: .1em;
  transform: translateX(-50%);
}

.signal-stage.is-aligned .signal-operator small { color: var(--sg-paper); }

.signal-proof {
  position: absolute;
  z-index: 6;
  left: 28px;
  bottom: 28px;
  width: 228px;
  padding: 16px;
  background: rgba(10,11,9,.88);
  border: 1px solid rgba(245,243,236,.2);
  backdrop-filter: blur(8px);
}
.signal-proof span,
.signal-proof small { display: block; color: rgba(245,243,236,.42); font: 600 6px/1 var(--mono); letter-spacing: .1em; }
.signal-proof strong { display: block; margin: 16px 0 10px; color: var(--sg-lime); font-size: 33px; line-height: .8; letter-spacing: -.07em; }

.signal-instruction {
  position: absolute;
  z-index: 6;
  right: 28px;
  bottom: 28px;
  margin: 0;
  color: rgba(245,243,236,.44);
  font: 600 7px/1 var(--mono);
  letter-spacing: .08em;
  text-transform: uppercase;
}
.signal-instruction span { display: inline-block; margin-right: 7px; color: var(--sg-lime); animation: signal-nudge 1.4s ease-in-out infinite; }
.signal-stage.is-aligned .signal-instruction { color: var(--sg-lime); }
.signal-stage.is-aligned .signal-instruction span { transform: rotate(45deg); animation: none; }

@keyframes signal-line-in { to { transform: scaleX(1); } }
@keyframes signal-node-float { 0%,100% { translate: 0 0; } 50% { translate: 0 -7px; } }
@keyframes signal-node-glitch { 0%,100% { translate: 0 0; } 25% { translate: 8px -2px; } 50% { translate: -5px 3px; } 75% { translate: 3px 1px; } }
@keyframes signal-operator-glitch { 0%,100% { translate: 0 0; filter: none; } 34% { translate: 7px -3px; filter: drop-shadow(-8px 0 rgba(184,255,31,.45)); } 68% { translate: -6px 2px; filter: drop-shadow(9px 0 rgba(245,243,236,.28)); } }
@keyframes signal-nudge { 0%,100% { transform: translate(0,0); } 50% { transform: translate(-4px,-4px); } }
@keyframes signal-scan { from { transform: translateY(-3px); } to { transform: translateY(3px); } }

@media (max-width: 1120px) {
  .signal-layout { grid-template-columns: minmax(390px,.83fr) minmax(520px,1.17fr); }
  .signal-copy { padding-left: 30px; padding-right: 30px; }
  .signal-copy h1 { font-size: clamp(58px,6.3vw,72px); }
  .signal-stage { min-height: 650px; }
}

@media (max-width: 900px) {
  .signal-hero { min-height: auto; }
  .signal-meta { left: 18px; right: 18px; }
  .signal-layout { grid-template-columns: 1fr; min-height: 0; }
  .signal-copy { min-height: min(760px,calc(100svh - 72px)); padding: 105px 28px 62px; }
  .signal-copy h1 { max-width: 760px; font-size: clamp(66px,12vw,108px); }
  .signal-lead { max-width: 620px; }
  .signal-positioning { margin-top: 58px; }
  .signal-stage { min-height: 650px; border-top: 1px solid rgba(245,243,236,.13); border-left: 0; }
}

@media (max-width: 620px) {
  .signal-meta { top: 18px; }
  .signal-meta span:last-child { display: none; }
  .signal-copy { min-height: calc(100svh - 72px); padding: 80px 18px 44px; }
  .signal-eyebrow { margin-bottom: 24px; font-size: 7px; }
  .signal-copy h1 { font-size: clamp(54px,16vw,78px); line-height: .8; }
  .signal-lead { margin-top: 28px; font-size: 15px; }
  .signal-actions { align-items: stretch; gap: 18px; margin-top: 30px; }
  .signal-cta { width: 100%; }
  .signal-text-link { padding: 8px 0; }
  .signal-positioning { margin-top: 42px; font-size: 6px; }
  .signal-stage { min-height: 570px; background-size: 28px 28px; }
  .signal-stage-head { inset: 17px 14px auto; font-size: 6px; }
  .signal-node,.signal-output { width: 104px; min-height: 67px; padding: 9px; }
  .signal-node strong,.signal-output strong { margin-top: 8px; font-size: 10px; }
  .signal-node > span,.signal-output > span { font-size: 5px; }
  .signal-focus { width: 92px; }
  .signal-operator { width: 78px; }
  .signal-proof { left: 14px; bottom: 14px; width: 185px; padding: 13px; }
  .signal-proof strong { margin: 13px 0 8px; font-size: 28px; }
  .signal-instruction { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .signal-copy h1 em::after { transform: scaleX(1); }
  .signal-node,.signal-instruction span,.signal-stage.is-dragging .signal-operator { animation: none !important; }
  .signal-mark,.signal-output-path { transition-duration: .01ms !important; }
}