/* Original optical apparatus. All dimensions and specimen positions are derived from DOM data. */
.page-intro {
  padding-bottom: 26px;
}
.page-intro h2 {
  font-size: clamp(36px, 3.65vw, 58px);
  line-height: 1;
  margin-top: 12px;
}
.metrics-ribbon {
  margin-bottom: 22px;
}
.motion-scroll-cue {
  display: inline-flex;
  margin: 16px 0 25px;
  padding: 0;
  border: 0;
  background: none;
  font: 10px var(--mono);
  letter-spacing: 0.12em;
  color: var(--accent);
}
.instrument {
  overflow: hidden;
  background: linear-gradient(145deg, #1b2d39, #101d27 72%);
  box-shadow:
    0 28px 55px #15232e25,
    inset 0 1px #a7bbc030;
}
.instrument-head {
  padding-bottom: 18px;
}
.bench-plane {
  background:
    radial-gradient(ellipse at 50% 12%, #28645e4d, transparent 60%),
    linear-gradient(135deg, #203340, #14232e 75%);
}
.apparatus {
  height: clamp(240px, 27vw, 350px);
  position: relative;
  margin: -10px 0 22px;
  perspective: 850px;
  isolation: isolate;
}
.apparatus-housing {
  position: absolute;
  inset: 6% 0 10%;
  border-radius: 42% / 24%;
  border: 1px solid #6b86948c;
  box-shadow:
    inset 0 0 0 9px #253d49,
    inset 0 0 0 10px #6e879080,
    inset 0 20px 50px #061019,
    0 22px 36px #050b1090;
  background: radial-gradient(ellipse at center, #28424b 0, #10212b 65%, #09151d 100%);
  transform: rotateX(9deg);
  overflow: hidden;
}
.apparatus-housing:before {
  content: "";
  position: absolute;
  inset: 14px;
  border: 1px solid #82979d4a;
  border-radius: inherit;
  pointer-events: none;
  z-index: 8;
}
.apparatus-plane {
  position: absolute;
  inset: 11% 8%;
  background:
    repeating-linear-gradient(90deg, #9ac0bf18 0 1px, transparent 1px 8.33%),
    linear-gradient(90deg, transparent 49.93%, #b9d9d5a3 50%, transparent 50.07%),
    linear-gradient(0deg, transparent 49.8%, #6a8a8b44 50%, transparent 50.2%);
  border-radius: 45%;
  transform: rotateX(18deg);
  box-shadow: inset 0 0 55px #8ed9c01c;
}
.apparatus-plane:after {
  content: "";
  position: absolute;
  inset: 8%;
  border: 1px dashed #93b3b542;
  border-radius: 50%;
}
.apparatus-plate {
  position: absolute;
  top: 20%;
  left: 22%;
  width: 56%;
  height: 58%;
  border-radius: 50%;
  border: 1px solid #aad1d195;
  transform: rotateY(-8deg) rotateX(18deg);
  background: radial-gradient(ellipse at 38% 28%, #d3ebe431, #3b777030 48%, #19423f0d 72%);
  box-shadow:
    0 12px 25px #07131c9c,
    inset 0 0 25px #bde7df22;
}
.apparatus-plate.rear {
  transform: translate(14px, 11px) rotateY(13deg) rotateX(18deg);
  opacity: 0.65;
}
.apparatus-aperture {
  position: absolute;
  width: 20%;
  height: 50%;
  top: 24%;
  left: 40%;
  border-radius: 50%;
  border: 12px solid #324d56;
  box-shadow:
    0 0 0 1px #b4c2bc8a,
    inset 0 0 0 1px #7aa19e,
    inset 0 0 30px #5fd6bd3d,
    0 7px 15px #09121b;
  background: radial-gradient(circle, #6ac6b82b, #081b24 65%);
}
.apparatus-rail {
  position: absolute;
  top: 76%;
  left: 6%;
  width: 88%;
  height: 12px;
  border-radius: 5px;
  border: 1px solid #91a9ae;
  background: linear-gradient(#7d999c, #304955 35%, #172b35 65%, #6d868b);
  box-shadow: 0 7px 12px #030b12;
  z-index: 5;
}
.apparatus-rail:after {
  content: "";
  position: absolute;
  inset: 3px 2%;
  background: repeating-linear-gradient(90deg, #d4d8c771 0 1px, transparent 1px 2%);
}
.apparatus-beam {
  position: absolute;
  z-index: 4;
  top: 17%;
  left: 10%;
  width: 16%;
  height: 65%;
  transform: skewX(-22deg);
  background: linear-gradient(90deg, transparent, #92e6d524 45%, #c1ffed55 50%, transparent);
  filter: blur(5px);
  pointer-events: none;
}
.apparatus-mark {
  position: absolute;
  top: 70%;
  z-index: 7;
  width: 3px;
  height: 17%;
  transform: translateX(-50%);
  background: #da7667;
  box-shadow: 0 0 11px #f97e62;
  opacity: 0.75;
}
.apparatus-mark.below {
  background: #78c7d5;
  box-shadow: 0 0 11px #63d9d5;
}
.apparatus-mark.focal {
  width: 5px;
  opacity: 1;
}
.apparatus-carriage {
  position: absolute;
  top: 70%;
  z-index: 9;
  width: 47px;
  height: 60px;
  transform: translate(-50%, -15%);
  border: 1px solid #a7c8c3;
  border-radius: 4px 4px 12px 12px;
  background: linear-gradient(100deg, #668a8d, #233c48 35%, #10232d 72%, #729c9c);
  box-shadow:
    0 5px 14px #030b12,
    inset 0 1px #daeee9;
}
.apparatus-carriage:before {
  content: "";
  position: absolute;
  top: -23px;
  left: 9px;
  width: 27px;
  height: 27px;
  border: 5px solid #99b5b2;
  border-radius: 50%;
  background: #14313b;
  box-shadow: inset 0 0 12px #6fe3ca;
}
.apparatus-carriage span {
  position: absolute;
  left: 50%;
  top: -19px;
  width: 1px;
  height: 69px;
  background: #b9e5d7;
  box-shadow: 0 0 6px #a4ffe2;
}
.apparatus-screw {
  position: absolute;
  z-index: 10;
  top: 50%;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: radial-gradient(circle, #c3d1ca, #4b6269 70%);
  box-shadow: 0 1px 3px #02080c;
}
.apparatus-screw.one {
  left: 3%;
}
.apparatus-screw.two {
  right: 3%;
}
.apparatus-caption {
  position: absolute;
  inset: auto 4% 0;
  display: flex;
  justify-content: space-between;
  color: #a6c5c7;
  font: 9px var(--mono);
  letter-spacing: 0.08em;
}
.bench-row {
  z-index: 1;
}
.instrument .registration:focus-visible {
  z-index: 12;
}

.journey-layout {
  grid-template-columns: 150px minmax(0, 1.1fr) minmax(290px, 0.9fr);
  gap: 28px;
  min-height: 300vh;
}
.chapter-nav {
  top: 22vh;
}
.story-stage {
  position: sticky;
  top: 16vh;
  height: min(66vh, 590px);
  align-self: start;
  overflow: hidden;
  border: 1px solid #84989b;
  border-radius: 5px;
  background:
    radial-gradient(ellipse at 45% 42%, #36646445, transparent 55%), linear-gradient(135deg, #1d303c, #10202a);
  box-shadow: 0 25px 50px #18303b26;
  color: #e5eff0;
  perspective: 800px;
}
.story-stage:before {
  content: "";
  position: absolute;
  inset: 12px;
  border: 1px solid #7eaaaa32;
  pointer-events: none;
}
.story-head {
  padding: 28px;
  font: 10px var(--mono);
  color: #a9c7ca;
  letter-spacing: 0.1em;
  display: flex;
  justify-content: space-between;
}
.story-optic {
  position: absolute;
  top: 19%;
  left: 9%;
  right: 9%;
  height: 38%;
  border-radius: 50%;
  border: 2px solid #7da7a77d;
  box-shadow:
    inset 0 0 0 12px #223d47,
    inset 0 0 0 13px #a1bbb344,
    inset 0 0 50px #71cab028,
    0 12px 20px #060f1a;
  transform: rotateX(18deg);
}
.story-optic:before {
  content: "";
  position: absolute;
  inset: 15%;
  border-radius: 50%;
  border: 1px dashed #9cc8c87c;
}
.story-specimen {
  position: absolute;
  inset: 13% 18%;
  border: 1px solid #bae0d79c;
  border-radius: 50%;
  background: radial-gradient(ellipse, #5cc0ae3d, transparent 70%);
  transform: rotateY(-25deg);
  box-shadow: 0 15px 23px #071118;
}
.story-axis {
  position: absolute;
  left: 50%;
  top: 12%;
  bottom: 12%;
  width: 1px;
  border-left: 1px dashed #cde7de99;
}
.story-bracket {
  position: absolute;
  top: 61%;
  left: 10%;
  width: 80%;
  height: 20px;
  border: solid #d86b58;
  border-width: 0 2px 2px;
  transform-origin: 50% 50%;
}
.story-bracket:before,
.story-bracket:after {
  content: "";
  position: absolute;
  top: -10px;
  height: 11px;
  border-left: 2px solid #d86b58;
}
.story-bracket:after {
  right: 0;
}
.story-pin {
  position: absolute;
  top: 59%;
  z-index: 3;
  width: 8px;
  height: 35px;
  background: #e37461;
  box-shadow: 0 0 15px #ed7657;
}
.story-beam {
  position: absolute;
  z-index: 2;
  left: 12%;
  top: 18%;
  height: 39%;
  width: 16%;
  transform: skewX(-22deg);
  background: linear-gradient(90deg, transparent, #b5eadd68, transparent);
  filter: blur(8px);
}
.story-measure {
  position: absolute;
  top: 70%;
  left: 10%;
  font: 24px var(--mono);
  opacity: 0;
  transform: translateY(12px);
}
.story-slips {
  position: absolute;
  inset: auto 7% 6%;
  display: grid;
  gap: 5px;
  z-index: 4;
}
.story-slip {
  padding: 8px 12px;
  background: #eaf3f0;
  color: #1b3440;
  border-left: 3px solid #71b8af;
  box-shadow: 0 4px 12px #071219;
  font: 10px/1.5 var(--mono);
  opacity: 0;
  transform: translateX(30px);
}
.story-slip.missing {
  border-color: #ce6b51;
  background: #263e48;
  color: #d8ebeb;
  border-style: dashed;
}
.story-paths {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}
.story-link {
  fill: none;
  stroke: #8ce0c9;
  stroke-width: 1.5;
  stroke-dasharray: 180;
  stroke-dashoffset: 180;
}
.story-dossier {
  position: absolute;
  inset: 13% 7% auto 45%;
  z-index: 5;
  padding: 18px;
  border: 1px solid #d0ddd7;
  background: #ebf2f0f2;
  color: #1b323c;
  box-shadow: 0 12px 22px #060e14;
  opacity: 0;
  transform: translateY(22px);
  font: 10px/1.7 var(--mono);
}
.story-dossier strong {
  display: block;
  margin: 6px 0;
  font-size: 14px;
  overflow-wrap: anywhere;
}
.story-dossier span {
  display: block;
}
.journey-chapter {
  min-height: 75vh;
  border-bottom: 1px solid var(--border);
}
.journey-chapter:first-child {
  min-height: 70vh;
}
.journey-chapter:last-child {
  min-height: 85vh;
}
.journey-chapter .evidence-registration {
  background: transparent;
  border: 0;
  padding-left: 0;
}

.seal-sheet {
  position: relative;
  margin: 26px 0;
  padding: 28px;
  border: 1px solid #8a9995;
  background: repeating-linear-gradient(0deg, #eff3f0 0 30px, #dbe4e2 31px), #edf2ef;
  box-shadow:
    12px 15px 0 #dae3e2,
    18px 22px 30px #13252c2b;
  overflow: hidden;
}
.capsule .capsule-head {
  background: #15232e;
  color: #fff;
  border: 1px solid #55747b;
}
.capsule .capsule-title h2 {
  color: #fff;
}
.capsule .capsule-actions .btn-sm {
  color: #fff;
  border-color: #6c8991;
}
.capsule .verify-strip {
  border: 1px solid #8fa5a7;
}
.capsule .check-grid {
  border: 1px solid #a8b9b9;
}
.seal-head {
  display: flex;
  justify-content: space-between;
  gap: 15px;
  border-bottom: 2px solid #263a42;
  padding-bottom: 12px;
  font: 10px var(--mono);
  letter-spacing: 0.08em;
}
.seal-slips {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 12px;
  margin: 24px 0;
  position: relative;
  z-index: 2;
}
.seal-slip {
  min-height: 90px;
  padding: 13px;
  border: 1px solid #9cb6b4;
  background: #fbfdf9;
  box-shadow: 4px 5px 0 #19303823;
  font: 11px/1.6 var(--mono);
  overflow-wrap: anywhere;
}
.seal-slip strong,
.seal-slip span {
  display: block;
}
.seal-slip b {
  display: block;
  font-weight: 600;
}
.seal-slip strong {
  color: #0f766e;
}
.seal-slip span {
  color: #526673;
}
.seal-connections {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}
.seal-connection {
  fill: none;
  stroke: #0f766e;
  stroke-width: 2;
  stroke-dasharray: 500;
  stroke-dashoffset: 500;
}
.seal-foot {
  position: relative;
  z-index: 2;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: end;
  border-top: 1px solid #8aa09d;
  padding-top: 15px;
  font: 10px var(--mono);
}
.seal-foot strong {
  overflow-wrap: anywhere;
}
.seal-stamp {
  opacity: 0;
  padding: 12px 16px;
  border: 2px solid #0f766e;
  color: #0f766e;
  font: bold 15px var(--mono);
  transform: rotate(-5deg);
  white-space: nowrap;
}
.seal-sheet[data-state="failed"] .seal-stamp {
  border-color: #c34736;
  color: #c34736;
}
.seal-sheet[data-state="failed"] .seal-altered {
  border-color: #c34736;
  box-shadow: 5px 5px 0 #c3473644;
}
.seal-sheet[data-state="failed"] .seal-connection {
  stroke: #c34736;
  stroke-dasharray: 5 7;
  stroke-dashoffset: 0;
}
.seal-sheet[data-state="passed"] .seal-connection {
  stroke-dashoffset: 0;
}
.seal-lens {
  position: absolute;
  top: 0;
  left: -20%;
  width: 20%;
  height: 100%;
  background: linear-gradient(90deg, transparent, #b2e5d578, transparent);
  filter: blur(8px);
  pointer-events: none;
}
@media (max-width: 950px) {
  .journey-layout {
    grid-template-columns: 115px minmax(0, 1fr);
    gap: 20px;
  }
  .story-stage {
    grid-column: 2;
    grid-row: 1;
    position: sticky;
    top: 10px;
    height: 350px;
  }
  .journey-layout > .journey-chapters {
    grid-column: 2;
    grid-row: 2;
  }
  .chapter-nav {
    grid-column: 1;
    grid-row: 1 / 3;
  }
  .journey-chapter {
    min-height: 55vh;
  }
}
@media (max-width: 600px) {
  .page-intro .intro-aside {
    display: none;
  }
  .page-intro {
    gap: 10px;
    padding: 0 0 16px;
  }
  .page-intro h2 {
    font-size: 36px;
    line-height: 1.02;
  }
  .intro-aside p {
    font-size: 12px;
    line-height: 1.4;
    margin: 7px 0;
  }
  .intro-aside .text-action {
    font-size: 11px;
  }
  .apparatus {
    height: 230px;
  }
  .apparatus-housing {
    inset: 8% 0 14%;
  }
  .apparatus-caption {
    font-size: 7px;
  }
  .journey-layout {
    display: block;
    min-height: 0;
  }
  .chapter-nav {
    position: sticky;
    z-index: 10;
    top: 0;
    flex-direction: row;
    overflow-x: auto;
    padding: 0;
    background: var(--bg);
  }
  .chapter-nav button {
    flex: 0 0 auto;
    gap: 6px;
    padding: 10px;
    font-size: 11px;
  }
  .story-stage {
    position: sticky;
    top: 47px;
    height: 290px;
    z-index: 3;
  }
  .story-head {
    padding: 15px;
    font-size: 8px;
  }
  .story-slip {
    font-size: 8px;
    padding: 4px 7px;
  }
  .story-dossier {
    padding: 10px;
    font-size: 8px;
    inset: 12% 5% auto 36%;
  }
  .story-measure {
    font-size: 17px;
  }
  .journey-chapter,
  .journey-chapter:first-child,
  .journey-chapter:last-child {
    min-height: 60vh;
    padding: 25px 0;
  }
  .seal-sheet {
    padding: 15px;
  }
  .seal-slips {
    gap: 6px;
  }
  .seal-slip {
    min-height: 60px;
    font-size: 9px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .apparatus-beam,
  .story-beam,
  .seal-lens {
    display: none;
  }
  .story-measure,
  .story-slip,
  .story-dossier {
    opacity: 1;
    transform: none;
  }
  .story-link {
    stroke-dashoffset: 0;
  }
  .seal-sheet[data-state="passed"] .seal-stamp,
  .seal-sheet[data-state="failed"] .seal-stamp {
    opacity: 1;
  }
}