.force-explainer {
  --muted: #b7b3bd;
  --dim: #aaa6b2;
  --focus: #79dcff;
  --force-pink: #ff5faf;
  --force-blue: #55d9ff;
  --force-gold: #ffd56a;
  position: relative;
  z-index: 3;
  min-height: 100svh;
  overflow: hidden;
  background:
    radial-gradient(circle at 60% 44%, rgba(75, 40, 110, .22), transparent 46%),
    linear-gradient(180deg, #05050a, #090811 70%, #07070a);
  color: var(--text);
}

#force-field {
  padding-top: 0;
}

#force-field .force-field-details {
  margin-top: clamp(72px, 10svh, 120px);
}

.force-explainer::before {
  position: absolute;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(rgba(255, 255, 255, .022) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .022) 1px, transparent 1px);
  background-size: 48px 48px;
  content: "";
  mask-image: linear-gradient(to bottom, transparent, #000 15%, #000 80%, transparent);
}

.force-glass-trace {
  position: absolute;
  top: 8svh;
  left: 50%;
  z-index: -1;
  width: min(72vw, 980px);
  aspect-ratio: 4 / 3;
  border: 1px solid rgba(214, 222, 232, .1);
  border-radius: 6% / 8%;
  content: "";
  opacity: .72;
  transform: translateX(-50%);
  box-shadow: inset 0 0 52px rgba(125, 148, 172, .045);
  mask-image: linear-gradient(to bottom, #000 0%, rgba(0, 0, 0, .5) 44%, transparent 88%);
  pointer-events: none;
}

.force-shell {
  width: min(1540px, 100%);
  margin: 0 auto;
  padding: clamp(72px, 10svh, 130px) clamp(20px, 4vw, 64px) clamp(72px, 10svh, 128px);
}

.force-intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, .62fr);
  gap: clamp(26px, 5vw, 94px);
  align-items: end;
  margin-bottom: clamp(34px, 6svh, 72px);
}

.force-kicker {
  margin: 0 0 15px;
  color: var(--accent);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12px;
  font-weight: 750;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.force-title {
  max-width: 12ch;
  margin: 0;
  font-size: clamp(48px, 7vw, 104px);
  font-weight: 770;
  letter-spacing: -.065em;
  line-height: .91;
  text-wrap: balance;
}

.force-lede {
  margin: 0 0 5px;
  color: var(--muted);
  font-size: clamp(18px, 1.7vw, 24px);
  font-weight: 530;
  line-height: 1.48;
}

.force-lede strong {
  color: var(--text);
  font-weight: 720;
}

.force-stage {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(300px, .64fr);
  gap: clamp(22px, 3vw, 48px);
  align-items: stretch;
}

.force-canvas-shell {
  position: relative;
  min-height: clamp(500px, 65svh, 720px);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, .16);
  border-radius: 18px;
  background:
    radial-gradient(circle at 50% 44%, rgba(46, 29, 68, .52), transparent 55%),
    rgba(4, 4, 9, .82);
  box-shadow:
    0 34px 80px rgba(0, 0, 0, .44),
    inset 0 1px rgba(255, 255, 255, .05);
}

.force-canvas-shell::after {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, .035), transparent 20% 78%, rgba(255, 255, 255, .02));
  content: "";
  pointer-events: none;
}

.force-canvas {
  display: block;
  width: 100%;
  height: 100%;
  min-height: inherit;
  cursor: grab;
  outline: none;
  touch-action: pan-y;
}

.force-canvas:active {
  cursor: grabbing;
}

.force-canvas:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: -5px;
}

.force-canvas-label {
  position: absolute;
  top: 18px;
  left: 18px;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 11px;
  border: 1px solid rgba(255, 255, 255, .14);
  border-radius: 999px;
  background: rgba(3, 3, 8, .72);
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 11px;
  font-weight: 680;
  letter-spacing: .04em;
  pointer-events: none;
}

.force-canvas-label::before {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 0 10px rgba(255, 255, 255, .8);
  content: "";
}

.force-readout {
  position: absolute;
  right: 18px;
  bottom: 18px;
  z-index: 2;
  min-width: 184px;
  padding: 13px 15px;
  border: 1px solid rgba(255, 255, 255, .15);
  border-radius: 10px;
  background: rgba(3, 3, 8, .8);
  box-shadow: 0 12px 30px rgba(0, 0, 0, .24);
  backdrop-filter: blur(10px);
  pointer-events: none;
}

.force-readout__formula {
  margin: 0 0 7px;
  color: #fff;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 14px;
  font-weight: 760;
}

.force-readout__numbers {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin: 0;
  color: var(--dim);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 10px;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.force-readout__numbers strong {
  color: var(--text);
  font-size: 12px;
}

.force-panel {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-width: 0;
  padding: clamp(22px, 3vw, 38px);
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: 18px;
  background: rgba(10, 9, 17, .78);
}

.force-step {
  margin: 0 0 22px;
  color: var(--text);
  font-size: clamp(21px, 2vw, 29px);
  font-weight: 690;
  letter-spacing: -.025em;
  line-height: 1.2;
}

.force-equation {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 7px;
  margin-bottom: 23px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: clamp(17px, 1.6vw, 22px);
  font-weight: 760;
}

.force-equation__a { color: var(--force-pink); }
.force-equation__b { color: var(--force-blue); }
.force-equation__c { color: var(--force-gold); }
.force-equation__sum { color: #fff; }
.force-equation__operator { color: var(--dim); }

.force-legend {
  display: grid;
  gap: 10px;
  margin-bottom: 24px;
}

.force-legend__row {
  display: grid;
  grid-template-columns: 12px 1fr auto;
  gap: 10px;
  align-items: center;
  color: var(--muted);
  font-size: 13px;
}

.force-legend__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 12px currentColor;
}

.force-legend__row--a { color: var(--force-pink); }
.force-legend__row--b { color: var(--force-blue); }
.force-legend__row--c { color: var(--force-gold); }

.force-legend__label {
  color: var(--muted);
}

.force-legend__value {
  color: var(--text);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-variant-numeric: tabular-nums;
}

.force-targets {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 7px;
  margin: auto 0 10px;
}

.force-target,
.force-action {
  min-height: 46px;
  border: 1px solid rgba(255, 255, 255, .16);
  border-radius: 7px;
  background: rgba(255, 255, 255, .035);
  color: var(--muted);
  cursor: pointer;
  font-weight: 680;
}

.force-target:hover,
.force-action:hover {
  border-color: rgba(255, 255, 255, .4);
  color: var(--text);
}

.force-target[aria-pressed="true"] {
  border-color: #fff;
  background: rgba(255, 255, 255, .1);
  color: #fff;
}

.force-target:focus-visible,
.force-action:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

.force-actions {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 7px;
}

.force-action {
  padding: 8px 13px;
  text-align: left;
}

.force-action[aria-pressed="true"] {
  border-color: var(--accent);
  background: rgba(210, 176, 106, .13);
  color: var(--text);
}

.force-source {
  margin: 16px 0 0;
  color: var(--dim);
  font-size: 11px;
  line-height: 1.45;
}

.force-webgl-fallback {
  display: none;
  position: absolute;
  inset: 0;
  z-index: 4;
  place-items: center;
  padding: 28px;
  background: #08070d;
  color: var(--muted);
  text-align: center;
}

.force-explainer[data-webgl="failed"] .force-webgl-fallback {
  display: grid;
}

@media (max-width: 980px) {
  .force-intro,
  .force-stage {
    grid-template-columns: 1fr;
  }

  .force-lede {
    max-width: 42ch;
  }

  .force-canvas-shell {
    min-height: min(64svh, 620px);
  }

  .force-panel {
    min-height: auto;
  }
}

@media (max-width: 560px) {
  .force-shell {
    padding: 64px 14px 72px;
  }

  .force-intro {
    gap: 20px;
    margin-bottom: 30px;
  }

  .force-title {
    font-size: clamp(46px, 15vw, 68px);
  }

  .force-lede {
    font-size: 17px;
  }

  .force-stage {
    gap: 12px;
  }

  .force-canvas-shell,
  .force-canvas {
    min-height: 470px;
  }

  .force-canvas-label {
    top: 12px;
    left: 12px;
  }

  .force-readout {
    right: 12px;
    bottom: 12px;
    min-width: 168px;
  }

  .force-panel {
    padding: 22px 18px;
  }

  .force-targets {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .force-glass-trace {
    opacity: .38;
  }
}