/* A live optical diagram, drawn with HTML and SVG. No video or runtime dependency. */
.signal-story {
  --signal-bg: #edf2f7;
  --signal-panel: #ffffffdb;
  --signal-line: #9caec340;
  --signal-muted: #576b82;
  --signal-ink: #273b55;
  --signal-accent: #416f9e;
  --signal-edge: #fff;
  --signal-shadow: #3153771f;
  --signal-gold: #967540;
  --signal-highlight: #dce9f5;
  position: relative;
  overflow: hidden;
  isolation: isolate;
  border: 1px solid var(--hairline);
  border-radius: 24px;
  background: var(--signal-bg);
  color: var(--signal-ink);
  box-shadow: 0 20px 60px -42px var(--signal-shadow), inset 0 1px 0 var(--signal-edge);
}
.signal-bar {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 78px;
  padding: 18px 32px;
}
.signal-kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  font: 10px var(--mono);
  letter-spacing: .13em;
  text-transform: uppercase;
}
.signal-status-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--signal-accent);
  box-shadow: 0 0 0 4px #829cbd12;
}
.signal-playback { display: flex; align-items: center; gap: 20px; }
.signal-example { color: var(--signal-muted); font-size: 10px; }
.signal-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-height: 36px;
  min-width: 83px;
  padding: 6px 12px;
  border: 1px solid var(--signal-line);
  border-radius: 30px;
  background: var(--signal-panel);
  color: var(--signal-ink);
  font-size: 11px;
  box-shadow: inset 0 1px 0 var(--signal-edge);
}
.signal-toggle[hidden] { display: none; }
.signal-toggle:hover { border-color: var(--signal-accent); }
.signal-toggle svg { width: 13px; height: 13px; }
.signal-toggle :is(.signal-pause-icon, .signal-replay-icon) { display: none; }
.signal-story[data-state="playing"] .signal-pause-icon,
.signal-story[data-state="ended"] .signal-replay-icon { display: block; }
.signal-story:is([data-state="playing"], [data-state="ended"]) .signal-play-icon { display: none; }

.signal-scene {
  position: relative;
  height: 350px;
  margin: 0 32px 22px;
}
.signal-grid {
  position: absolute;
  inset: -40px -32px -20px;
  pointer-events: none;
  opacity: .65;
  background-image: radial-gradient(circle, var(--signal-muted) .65px, transparent .9px);
  background-size: 19px 19px;
  mask-image: radial-gradient(ellipse 48% 55% at 47% 47%, #0008, transparent);
  -webkit-mask-image: radial-gradient(ellipse 48% 55% at 47% 47%, #0008, transparent);
}
.signal-column-label {
  position: absolute;
  top: 7px;
  font: 9px var(--mono);
  letter-spacing: .13em;
  text-transform: uppercase;
  color: var(--signal-muted);
}
.signal-label-sources { left: 16px; }
.signal-label-output { left: 66%; }
.signal-routes {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
  pointer-events: none;
}
.signal-route-lines { stroke-width: 1; }
.signal-route-pulses path {
  stroke-dasharray: 4 96;
  stroke-dashoffset: 100;
  opacity: 0;
  animation: signal-route-travel 3.8s linear infinite;
}
.signal-route-pulses path:nth-child(2) { animation-delay: -1.2s; }
.signal-route-pulses path:nth-child(3) { animation-delay: -2.4s; }
.signal-route-pulses path:nth-child(4) { animation-delay: -.6s; }
.signal-sources {
  position: absolute;
  left: 1.4%;
  top: 43px;
  width: 24%;
  max-width: 250px;
  display: grid;
  gap: 12px;
  z-index: 2;
}
.signal-source {
  height: 80px;
  padding: 12px 16px;
  border: 1px solid var(--signal-line);
  border-top-color: var(--signal-edge);
  border-radius: 13px;
  background: linear-gradient(120deg, var(--signal-panel), transparent), var(--signal-bg);
  box-shadow: 0 7px 20px -13px var(--signal-shadow), inset 0 1px 0 var(--signal-edge);
  transition: transform 1000ms cubic-bezier(.2,.7,.2,1), opacity 1000ms, border-color 800ms;
  transform: perspective(700px) rotateY(7deg) rotateZ(-2deg) translateX(-3px);
}
.signal-video { transform: perspective(700px) rotateY(7deg) rotateZ(-2deg) translateX(10px); }
.signal-newsletter { transform: perspective(700px) rotateY(7deg) rotateZ(-2deg) translateX(-3px); }
.signal-source-top {
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  font-size: 12px;
  font-weight: 500;
}
.signal-source-icon { display: inline-flex; color: var(--signal-muted); }
.signal-source-icon svg { width: 15px; height: 15px; }
.signal-format { margin-left: auto; font: 7px var(--mono); color: var(--signal-muted); letter-spacing: .07em; }
.signal-waveform { display: flex; align-items: center; justify-content: space-between; height: 29px; margin-top: 6px; gap: 3px; }
.signal-waveform i {
  width: 3px;
  flex: 1;
  max-width: 4px;
  height: var(--bar-height, 13px);
  background: var(--signal-accent);
  opacity: .5;
  border-radius: 3px;
  animation: signal-wave 1.3s ease-in-out var(--bar-delay, 0s) infinite alternate;
}
.signal-video-track { display: flex; gap: 10px; align-items: center; margin-top: 8px; }
.signal-video-frame { display: grid; place-items: center; width: 36px; height: 23px; border-radius: 3px; background: var(--signal-highlight); color: var(--signal-muted); overflow: hidden; }
.signal-video-frame svg { width: 29px; height: 23px; transform: translateY(2px); }
.signal-video-timeline { position: relative; flex: 1; height: 20px; }
.signal-video-timeline i { position: absolute; top: 5px; width: 100%; height: 5px; border-radius: 1px; background: repeating-linear-gradient(90deg, var(--signal-line) 0 9px, transparent 9px 12px); }
.signal-video-timeline b { position: absolute; top: 13px; width: 68%; height: 3px; background: var(--signal-line); }
.signal-video-timeline span { position: absolute; left: 40%; top: 0; height: 20px; width: 1px; background: var(--signal-accent); animation: signal-playhead 6s linear infinite; }
.signal-text-lines { margin-top: 12px; display: grid; gap: 5px; }
.signal-text-lines i { height: 3px; width: 92%; background: var(--signal-line); border-radius: 2px; }
.signal-text-lines i:nth-child(2) { width: 79%; }
.signal-text-lines i:nth-child(3) { width: 58%; background: var(--signal-accent); opacity: .35; }

.signal-optic {
  position: absolute;
  left: 47.5%;
  top: 50%;
  width: 180px;
  height: 222px;
  transform: translate(-50%, -50%);
  z-index: 1;
}
.signal-lens-halo { position: absolute; inset: -60px; border-radius: 50%; background: radial-gradient(ellipse, #a3c5e135, transparent 66%); }
.signal-lens {
  position: relative;
  width: 154px;
  height: 185px;
  margin: 0 auto;
  padding: 9px;
  border-radius: 50%;
  transform: perspective(650px) rotateY(-20deg) rotateZ(16deg);
  box-shadow: 5px 3px 0 #7d8c9a, 7px 4px 0 #536476, 12px 18px 24px -11px #20374b45, inset 1px 1px 2px #fff, inset -1px -1px 2px #566b80;
  transition: transform 1400ms cubic-bezier(.2,.7,.2,1);
}
.signal-lens::before {
  content: "";
  position: absolute;
  inset: 0;
  padding: 9px;
  border-radius: inherit;
  background: conic-gradient(from 25deg, #7c899a, #edf2f6 9%, #8a99a9 18%, #f5f9fc 24%, #8996a7 35%, #526375 49%, #afbdcb 58%, #f4f7fa 64%, #738497 74%, #d7e2eb 86%, #7c899a);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask-composite: exclude;
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
}
.signal-lens::after { content: ""; position: absolute; inset: 5px; border: 1px solid #f6fbff80; border-radius: 50%; pointer-events: none; }
.signal-lens-glass {
  position: relative;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  overflow: hidden;
  border: 1px solid #536c8560;
  background: linear-gradient(125deg, #f8fcff6b 2%, #c8dcec2b 28%, #adc7de12 45%, #f8fcff82 47%, #f7fbff1f 52%, #8ca9c133 78%, #e7f4ff70);
  box-shadow: inset 4px 1px 10px #263e502b, inset -3px -2px 5px #f9fcffb0;
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
}
.signal-lens-lines { position: absolute; inset: 8px; border-radius: 50%; border: 1px solid #91b0c92b; background: repeating-linear-gradient(0deg, transparent 0 15px, #8aaac019 15px 16px); }
.signal-lens-scan { position: absolute; inset: -20% -70%; background: linear-gradient(105deg, transparent 38%, #f2faff05 45%, #f2faff9c 50%, #f2faff05 53%, transparent 62%); animation: signal-glass-sweep 5s ease-in-out infinite; }
.signal-lens-wave { position: absolute; width: 120%; height: 75%; top: 14%; left: -10%; transform: rotate(-16deg); stroke-width: 1.1; transition: transform 1400ms cubic-bezier(.2,.7,.2,1); }
.signal-wave-input { stroke: var(--signal-accent); opacity: .45; }
.signal-wave-output { stroke: var(--signal-accent); stroke-width: 1.8; }
.signal-focal-point { position: absolute; left: 48%; top: 49%; width: 5px; height: 5px; background: #f8fcff; border-radius: 50%; box-shadow: 0 0 0 4px #c3def53b, 0 0 15px 5px #cce3ff6e; }
.signal-optic-name { position: absolute; top: 213px; left: -20px; right: -20px; text-align: center; font-size: 16px; font-weight: 550; letter-spacing: -.035em; }
.signal-optic-name span { display: block; margin-top: 3px; font-size: 10px; font-weight: 400; color: var(--signal-muted); letter-spacing: .02em; }

.signal-output { position: absolute; top: 43px; right: 1%; width: 33%; height: 278px; z-index: 2; }
.signal-output-back { position: absolute; inset: 9px -7px -7px 8px; border: 1px solid var(--signal-line); background: var(--signal-panel); opacity: .4; border-radius: 15px; transform: rotate(2deg); transition: transform 1000ms; }
.signal-output-window {
  position: relative;
  height: 100%;
  overflow: hidden;
  border: 1px solid var(--signal-line);
  border-top-color: var(--signal-edge);
  border-radius: 15px;
  background: linear-gradient(135deg, var(--signal-panel), transparent), var(--signal-bg);
  box-shadow: 0 15px 30px -20px var(--signal-shadow), inset 0 1px 0 var(--signal-edge);
  transform: translateY(3px);
  transition: transform 1100ms cubic-bezier(.2,.7,.2,1), box-shadow 1100ms;
}
.signal-window-chrome { display: flex; align-items: center; justify-content: space-between; height: 35px; padding: 0 15px; border-bottom: 1px solid var(--signal-line); color: var(--signal-muted); font: 7px var(--mono); letter-spacing: .07em; }
.signal-window-chrome > span:first-child { display: flex; gap: 4px; }
.signal-window-chrome i { width: 3px; height: 3px; border-radius: 50%; background: var(--signal-muted); opacity: .45; }
.signal-window-chrome svg { width: 11px; height: 11px; }
.signal-result { position: absolute; inset: 35px 0 0; padding: 19px 21px 16px; opacity: 0; transform: translateY(16px); visibility: hidden; transition: opacity 600ms, transform 900ms cubic-bezier(.2,.7,.2,1), visibility 600ms; }
.signal-result-eyebrow { display: flex; align-items: center; gap: 6px; font-size: 10px; color: var(--signal-muted); margin-bottom: 10px; }
.signal-mini-dot { width: 4px; height: 4px; border-radius: 50%; background: var(--signal-accent); }
.signal-result h3 { font-size: 23px; letter-spacing: -.045em; line-height: 1.13; font-weight: 500; margin: 0 0 15px; }
.signal-transcript-body > div { display: flex; justify-content: space-between; font: 7px var(--mono); color: var(--signal-muted); }
.signal-transcript-body b { font-weight: 400; opacity: .65; }
.signal-transcript-body p { display: grid; gap: 5px; margin: 7px 0 12px; }
.signal-transcript-body i { width: 100%; height: 3px; border-radius: 2px; background: var(--signal-line); transform-origin: left; }
.signal-transcript-body i:nth-child(2) { width: 89%; }
.signal-transcript-body i:last-child { width: 70%; }
.signal-result-footer { display: flex; align-items: center; gap: 5px; position: absolute; bottom: 14px; left: 21px; right: 16px; font-size: 8px; color: var(--signal-muted); }
.signal-tiny-check { font-size: 10px; color: var(--signal-accent); }
.signal-query { display: flex; gap: 8px; align-items: center; margin: -3px -5px 15px; padding: 10px 8px; border: 1px solid var(--signal-line); border-radius: 7px; font-size: 10px; white-space: nowrap; background: var(--signal-panel); }
.signal-query svg { width: 13px; height: 13px; flex-shrink: 0; color: var(--signal-muted); }
.signal-query-caret { width: 1px; height: 12px; flex-shrink: 0; background: var(--signal-accent); animation: signal-caret 1.1s step-end infinite; }
.signal-match { margin-bottom: 12px; padding: 0 0 9px; border-bottom: 1px solid var(--signal-line); }
.signal-match > div { display: flex; align-items: center; gap: 7px; font-size: 9px; color: var(--signal-muted); }
.signal-match > div > span:first-child { font: 7px var(--mono); color: var(--signal-accent); }
.signal-match > div > span:last-child { margin-left: auto; }
.signal-match p { display: flex; align-items: center; flex-wrap: wrap; gap: 4px; margin: 8px 0 0; }
.signal-match i { display: block; width: 28%; height: 3px; border-radius: 2px; background: var(--signal-line); }
.signal-match i:last-child { width: 56%; }
.signal-match mark { border-radius: 3px; padding: 1px 4px; background: var(--signal-highlight); color: var(--signal-accent); font-size: 11px; }
.signal-evidence-star { color: var(--signal-gold); font-size: 14px; line-height: 1; }
.signal-evidence h3 { margin-bottom: 9px; }
.signal-evidence-copy { font-size: 11px; color: var(--signal-muted); line-height: 1.65; margin-bottom: 14px; max-width: 250px; }
.signal-citations { display: flex; gap: 6px; }
.signal-citations > span { display: flex; gap: 6px; align-items: center; border: 1px solid var(--signal-line); border-radius: 4px; padding: 4px 7px; color: var(--signal-accent); font: 7px var(--mono); background: var(--signal-panel); }
.signal-citations b { font: 8px var(--sans); font-weight: 400; color: var(--signal-muted); }
.signal-evidence-link { display: flex; gap: 5px; align-items: center; position: absolute; bottom: 15px; left: 21px; font-size: 8px; color: var(--signal-muted); }
.signal-evidence-link svg { width: 12px; height: 12px; color: var(--signal-gold); }

/* Each chapter changes the same scene, preserving the connection to the sources. */
.signal-story[data-step="0"] .signal-transcript,
.signal-story[data-step="1"] .signal-search-result,
.signal-story[data-step="2"] .signal-evidence { visibility: visible; opacity: 1; transform: none; transition-delay: 120ms; }
.signal-story[data-step="0"] .signal-transcript-body i { animation: signal-transcribe 5.8s ease-in-out infinite; }
.signal-story[data-step="0"] .signal-transcript-body i:nth-child(2) { animation-delay: 160ms; }
.signal-story[data-step="0"] .signal-transcript-body i:nth-child(3) { animation-delay: 320ms; }
.signal-story[data-step="1"] .signal-source { transform: perspective(700px) rotateY(0) rotateZ(0); opacity: .75; }
.signal-story[data-step="1"] .signal-lens { transform: perspective(650px) rotateY(0) rotateZ(0); }
.signal-story[data-step="1"] .signal-lens-wave { transform: rotate(0); }
.signal-story[data-step="1"] .signal-output-window { transform: none; }
.signal-story[data-step="1"] .signal-match mark { animation: signal-highlight 1.3s ease-out both; }
.signal-story[data-step="1"] .signal-match:nth-of-type(3) mark { animation-delay: 350ms; }
.signal-story[data-step="2"] .signal-source { transform: perspective(700px) rotateY(0) rotateZ(0) translateX(-5px); opacity: .65; }
.signal-story[data-step="2"] .signal-lens { transform: perspective(650px) rotateY(15deg) rotateZ(-12deg); }
.signal-story[data-step="2"] .signal-lens-wave { transform: rotate(12deg); }
.signal-story[data-step="2"] .signal-output-window { transform: none; box-shadow: 0 20px 40px -20px var(--signal-shadow), inset 0 1px 0 var(--signal-edge); }
.signal-story[data-step="2"] .signal-output-back { transform: rotate(3deg) translate(3px, 3px); }
.signal-story[data-step="2"] .signal-route-lines { stroke: var(--signal-gold); opacity: .3; }
.signal-story[data-step="2"] .signal-route-pulses { stroke: var(--signal-gold); }

.signal-steps { position: relative; z-index: 3; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 30px; padding: 0 32px 28px; }
.signal-step { display: block; position: relative; min-width: 0; width: 100%; padding: 18px 0 0; border: 0; background: none; color: var(--signal-muted); text-align: left; cursor: pointer; }
.signal-step-track { position: absolute; height: 1px; inset: 0 0 auto; background: var(--signal-line); }
.signal-step-track i { display: block; width: 100%; height: 1px; background: var(--signal-accent); transform: scaleX(var(--stage-progress, 0)); transform-origin: left; }
.signal-step-heading { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; color: var(--signal-ink); font-size: 15px; font-weight: 500; letter-spacing: -.02em; }
.signal-step-number { font: 9px var(--mono); color: var(--signal-muted); transition: color 400ms; }
.signal-step-arrow { margin-left: auto; color: var(--signal-accent); font-size: 15px; opacity: 0; transform: translate(-4px,4px); transition: opacity 400ms, transform 400ms; }
.signal-step-description { display: block; max-width: 290px; margin-left: 24px; font-size: 12px; line-height: 1.75; }
.signal-step[aria-pressed="true"] .signal-step-number { color: var(--signal-accent); }
.signal-step[aria-pressed="true"] .signal-step-heading { color: var(--signal-accent); }
.signal-step[aria-pressed="true"] .signal-step-arrow,
.signal-step:hover .signal-step-arrow { opacity: 1; transform: none; }
.signal-step:hover .signal-step-heading { color: var(--signal-accent); }
.signal-story:not([data-enhanced]) .signal-step { cursor: default; opacity: 1; }
.signal-story:not([data-enhanced]) .signal-step-arrow { display: none; }
.signal-story:not([data-state="playing"]) *,
.signal-story:not([data-state="playing"]) *::before,
.signal-story:not([data-state="playing"]) *::after { animation-play-state: paused !important; }
.signal-story:not([data-state="playing"]) .signal-match mark,
.signal-story:not([data-state="playing"]) .signal-transcript-body i { animation: none; }

@keyframes signal-route-travel { 0% { stroke-dashoffset: 105; opacity: 0; } 12%, 80% { opacity: .8; } 100% { stroke-dashoffset: 0; opacity: 0; } }
@keyframes signal-wave { from { transform: scaleY(.45); } to { transform: scaleY(1); } }
@keyframes signal-playhead { from { transform: translateX(-32px); } to { transform: translateX(66px); } }
@keyframes signal-glass-sweep { 0%, 10% { transform: translateX(-30%); opacity: 0; } 40%, 55% { opacity: .85; } 90%, 100% { transform: translateX(30%); opacity: 0; } }
@keyframes signal-caret { 50% { opacity: 0; } }
@keyframes signal-transcribe { 0%, 7% { transform: scaleX(.1); opacity: .3; } 35%, 90% { transform: scaleX(1); opacity: 1; } 100% { transform: scaleX(1); opacity: .4; } }
@keyframes signal-highlight { from { clip-path: inset(0 100% 0 0); } to { clip-path: inset(0); } }

@media screen {
  :root[data-theme="dark"] .signal-story {
    --signal-bg: #111e2e;
    --signal-panel: #213145d9;
    --signal-line: #9ab3d02b;
    --signal-muted: #9baec6;
    --signal-ink: #e5edf8;
    --signal-accent: #acccec;
    --signal-edge: #c3d9f129;
    --signal-shadow: #0008;
    --signal-gold: #cfb780;
    --signal-highlight: #354e68;
    background: radial-gradient(ellipse 58% 80% at 48% 39%, #20395165, transparent 80%), var(--signal-bg);
  }
  :root[data-theme="dark"] .signal-lens-glass { background: linear-gradient(125deg, #ddecff38 2%, #819eb52b 28%, #adc7de05 45%, #d7efff38 47%, #f7fbff0a 52%, #8ca9c133 78%, #e7f4ff40); box-shadow: inset 4px 1px 10px #07121e70, inset -3px -2px 5px #b4d6f34d; }
  :root[data-theme="dark"] .signal-lens-halo { background: radial-gradient(ellipse, #9fc9fa22, transparent 66%); }
}

@media (max-width: 1000px) and (min-width: 761px) {
  .signal-scene { margin-inline: 20px; }
  .signal-sources { width: 27%; left: 0; }
  .signal-source { padding: 12px; }
  .signal-format { display: none; }
  .signal-optic { left: 46%; transform: translate(-50%, -50%) scale(.83); }
  .signal-output { width: 36%; right: 0; }
  .signal-result { padding-inline: 15px; }
  .signal-query { gap: 5px; font-size: 8px; padding-inline: 5px; }
  .signal-query-caret { display: none; }
  .signal-result-footer, .signal-evidence-link { left: 15px; font-size: 7px; }
  .signal-window-chrome { padding-inline: 12px; font-size: 6px; }
  .signal-label-output { left: 64%; }
  .signal-steps { gap: 20px; padding-inline: 24px; }
  .signal-step-heading { font-size: 12px; gap: 7px; }
  .signal-step-description { font-size: 10px; margin-left: 21px; }
}

@media (max-width: 760px) {
  .signal-story { border-radius: 19px; }
  .signal-bar { padding: 15px 20px; min-height: 68px; }
  .signal-kicker { font-size: 9px; letter-spacing: .08em; gap: 8px; }
  .signal-playback { gap: 0; }
  .signal-example { display: none; }
  .signal-toggle { min-height: 34px; min-width: 75px; padding-inline: 9px; }
  .signal-scene { height: 530px; margin: 0 16px 8px; }
  .signal-scene::after { content: "Illustrative research flow"; position: absolute; bottom: 0; width: 100%; text-align: center; font-size: 9px; color: var(--signal-muted); }
  .signal-grid { inset: -10px -16px; mask-image: radial-gradient(ellipse at 50% 38%, #0005, transparent 65%); -webkit-mask-image: radial-gradient(ellipse at 50% 38%, #0005, transparent 65%); }
  .signal-column-label, .signal-routes { display: none; }
  .signal-sources { top: 8px; left: 0; width: 100%; max-width: none; display: flex; justify-content: center; gap: 7px; }
  .signal-source { flex: 1; max-width: 135px; height: 73px; padding: 10px; border-radius: 9px; transform: rotate(-3deg); }
  .signal-video { transform: translateY(6px); }
  .signal-newsletter { transform: rotate(3deg); }
  .signal-source-top { gap: 5px; font-size: 8px; }
  .signal-source-icon svg { width: 12px; height: 12px; }
  .signal-format { display: none; }
  .signal-waveform { margin-top: 8px; height: 22px; gap: 2px; }
  .signal-waveform i { max-width: 3px; }
  .signal-waveform i:nth-child(n+18) { display: none; }
  .signal-text-lines { margin-top: 13px; gap: 5px; }
  .signal-video-frame { width: 26px; }
  .signal-video-track { gap: 5px; }
  .signal-video-timeline { overflow: hidden; }
  .signal-optic { top: 91px; left: 50%; width: 180px; height: 222px; transform-origin: top center; transform: translateX(-50%) scale(.59); }
  .signal-optic::before { content: ""; position: absolute; height: 200px; width: 1px; left: 50%; top: -10px; background: linear-gradient(transparent, var(--signal-accent), transparent); opacity: .4; z-index: -1; }
  .signal-optic-name { display: none; }
  .signal-output { top: 223px; right: 50%; transform: translateX(50%); width: min(330px, calc(100% - 16px)); height: 275px; }
  .signal-steps { grid-template-columns: 1fr; gap: 0; padding: 7px 20px 11px; }
  .signal-step { padding: 16px 0; }
  .signal-step-heading { font-size: 13px; margin-bottom: 4px; gap: 11px; }
  .signal-step-description { max-width: none; font-size: 11px; line-height: 1.65; margin-left: 24px; }
  .signal-step-track { background: var(--signal-line); }
  .signal-step-number { font-size: 9px; }
}
@media (max-width: 380px) {
  .signal-bar { padding-inline: 14px; }
  .signal-kicker { font-size: 8px; }
  .signal-scene { margin-inline: 10px; }
  .signal-sources { gap: 5px; }
  .signal-source { padding: 8px 6px; }
  .signal-source-top { gap: 3px; font-size: 7px; }
  .signal-source-icon svg { width: 10px; height: 10px; }
  .signal-output { width: calc(100% - 10px); }
  .signal-result { padding-inline: 16px; }
  .signal-query { font-size: 8px; gap: 5px; }
  .signal-query-caret { display: none; }
  .signal-result-footer, .signal-evidence-link { left: 16px; font-size: 7px; }
  .signal-steps { padding-inline: 16px; }
}
@media (prefers-reduced-motion: reduce) {
  .signal-story *, .signal-story *::before, .signal-story *::after { animation: none !important; transition: none !important; }
  .signal-transcript-body i { transform: none !important; }
}
@media (prefers-reduced-transparency: reduce) {
  .signal-lens-glass { backdrop-filter: none; -webkit-backdrop-filter: none; }
}
@media print {
  .signal-story { break-inside: avoid; }
  .signal-toggle { display: none; }
  .signal-story *, .signal-story *::before, .signal-story *::after { animation: none !important; transition: none !important; }
}