.brand-anchor {
  display: inline-flex;
  min-width: 116px;
  min-height: 52px;
  align-items: center;
  gap: 0.7rem;
  color: var(--blue);
  text-decoration: none;
}

.brand-anchor span {
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.06em;
}

.brand-anchor small {
  padding-left: 0.7rem;
  border-left: 1px solid var(--line);
  color: var(--silver);
  font-family: "JetBrains Readout", ui-monospace, monospace;
  font-size: 1rem;
  line-height: 1.25;
  text-transform: uppercase;
}

.breadcrumb {
  display: flex;
  min-height: 44px;
  align-items: center;
  gap: 0.7rem;
  color: var(--silver);
  font-family: "JetBrains Readout", ui-monospace, monospace;
  font-size: 0.875rem;
}

.breadcrumb a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  font-size: 1rem;
}

.kicker,
.section-code,
.micro,
.reviewed,
.caption,
.instrument,
.step-letter {
  font-family: "JetBrains Readout", ui-monospace, monospace;
}

.kicker,
.section-code,
.micro {
  color: var(--blue);
  font-size: 0.875rem;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.kicker {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.kicker::before {
  width: 32px;
  height: 2px;
  background: var(--electric);
  content: "";
}

.reviewed {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  margin: 1.25rem 0 0;
  padding: 0.25rem 0.75rem;
  border-left: 3px solid var(--electric);
  background: var(--wash);
  color: var(--charcoal);
  font-size: 1rem;
}

.instrument {
  position: relative;
  overflow: hidden;
  border: 1px solid #aeb9bf;
  border-radius: var(--radius);
  background: var(--paper);
  box-shadow: var(--shadow);
}

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

.instrument::before {
  inset: 44px 0 0;
  background:
    linear-gradient(90deg, transparent 49.8%, rgb(0 51 102 / 8%) 50%, transparent 50.2%),
    linear-gradient(rgb(0 51 102 / 8%) 1px, transparent 1px);
  background-size: 100% 32px;
}

.instrument::after {
  width: 120px;
  height: 120px;
  right: -48px;
  bottom: -48px;
  border: 1px solid var(--electric);
  border-radius: 50%;
  box-shadow: 0 0 28px rgb(0 168 224 / 16%);
}

.instrument-top {
  position: relative;
  z-index: 1;
  display: flex;
  min-height: 44px;
  align-items: center;
  justify-content: space-between;
  padding-inline: 1rem;
  border-bottom: 1px solid var(--line);
  background: var(--charcoal);
  color: var(--paper);
  font-size: 1rem;
  letter-spacing: 0.08em;
}

.signal-dot {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: #a8f2c0;
}

.signal-dot::before {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #29a559;
  box-shadow: 0 0 12px rgb(41 165 89 / 70%);
  content: "";
  animation: signal 2.4s ease-out infinite;
}

.instrument-core {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: auto 1fr auto 1fr auto;
  align-items: center;
  gap: 0.75rem;
  padding: clamp(2rem, 7vw, 4rem) 1.5rem;
}

.instrument-core span {
  display: grid;
  width: clamp(48px, 6vw, 64px);
  aspect-ratio: 1;
  place-items: center;
  border: 1px solid var(--blue);
  border-radius: 50%;
  background: var(--paper);
  color: var(--blue);
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-weight: 800;
  box-shadow: 0 0 20px rgb(0 168 224 / 12%);
  animation: assemble 420ms ease-out both;
}

.instrument-core span:nth-of-type(2) {
  animation-delay: 80ms;
}

.instrument-core span:nth-of-type(3) {
  animation-delay: 160ms;
}

.instrument-core i {
  height: 1px;
  background: linear-gradient(90deg, var(--blue), var(--electric));
}

.instrument dl {
  position: relative;
  z-index: 1;
  margin: 0;
  border-top: 1px solid var(--line);
  background: rgb(255 255 255 / 92%);
}

.instrument dl div {
  display: grid;
  grid-template-columns: minmax(0, 0.42fr) minmax(0, 0.58fr);
  gap: 1rem;
  padding: 0.8rem 1rem;
  border-bottom: 1px solid var(--soft-line);
}

.instrument dt,
.instrument dd {
  margin: 0;
  overflow-wrap: anywhere;
  font-size: 1rem;
}

.instrument dt {
  color: var(--silver);
}

.instrument dd {
  color: var(--charcoal);
  font-weight: 700;
  text-align: right;
}

.caption {
  max-width: 62ch;
  margin: 0;
  color: var(--silver);
  font-size: 1rem;
  letter-spacing: 0.015em;
}

.compare-stack {
  display: grid;
  gap: 1rem;
}

.compare-row {
  display: grid;
  grid-template-columns: minmax(0, 0.42fr) 64px minmax(0, 0.58fr);
  align-items: stretch;
}

.compare-row.reverse {
  grid-template-columns: minmax(0, 0.58fr) 64px minmax(0, 0.42fr);
}

.compare-row.reverse .claim-side {
  order: 3;
}

.compare-row.reverse .compare-joint {
  order: 2;
}

.compare-row.reverse .answer-side {
  order: 1;
}

.compare-side {
  min-height: 170px;
  padding: clamp(1.25rem, 3vw, 2rem);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  box-shadow: var(--shadow);
  transition: border-color var(--ease), box-shadow var(--ease), transform var(--ease);
}

.compare-side:hover {
  border-color: #9db8ca;
  box-shadow: 0 7px 24px rgb(36 51 59 / 10%);
  transform: translateY(-2px);
}

.compare-side p:last-child {
  margin-bottom: 0;
}

.answer-side {
  border-left: 4px solid var(--electric);
}

[data-tone="orange"] .answer-side {
  border-left-color: var(--orange);
}

[data-tone="green"] .answer-side {
  border-left-color: var(--green);
}

.compare-joint {
  display: grid;
  place-items: center;
}

.compare-joint span {
  position: relative;
  width: 100%;
  height: 1px;
  background: var(--line);
}

.compare-joint span::after {
  position: absolute;
  width: 9px;
  height: 9px;
  top: 50%;
  left: 50%;
  border: 2px solid var(--blue);
  border-radius: 50%;
  background: var(--paper);
  content: "";
  transform: translate(-50%, -50%);
}

.desk-list {
  display: grid;
  max-width: 980px;
  margin-left: auto;
  border-top: 1px solid var(--line);
}

.desk-link {
  display: grid;
  grid-template-columns: 48px 1fr 48px;
  min-height: 88px;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--line);
  color: var(--charcoal);
  text-decoration: none;
  transition: background-color var(--ease), color var(--ease), padding var(--ease);
}

.desk-link:hover {
  padding-inline: 1.25rem 0.75rem;
  background: var(--wash);
  color: var(--blue);
}

.desk-link strong,
.desk-link small {
  display: block;
  font-size: 1rem;
}

.desk-link small {
  color: var(--silver);
  font-weight: 400;
}

.desk-mark {
  color: var(--blue);
  font-family: "JetBrains Readout", ui-monospace, monospace;
  font-weight: 700;
}

.arrow {
  font-size: 1.5rem;
  text-align: right;
}

.step-list {
  display: grid;
  max-width: 960px;
  margin-left: auto;
  border-top: 1px solid var(--line);
}

.step {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 1.5rem;
  padding-block: 1.5rem;
  border-bottom: 1px solid var(--line);
}

.step-letter {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  border: 1px solid var(--blue);
  border-radius: 50%;
  color: var(--blue);
  font-weight: 700;
}

.step p:last-child {
  margin-bottom: 0;
}

.callout {
  margin-top: 2rem;
  padding: 1.25rem 1.5rem;
  border: 1px solid #f0c889;
  border-left: 4px solid var(--orange);
  border-radius: var(--radius);
  background: #fff8ec;
}

.callout p {
  margin: 0;
  color: #673600;
  font-weight: 600;
}

.toggle-controls {
  display: none;
  max-width: 960px;
  margin: 0 0 1rem auto;
  gap: 0.5rem;
}

.js .toggle-controls {
  display: flex;
  flex-wrap: wrap;
}

.toggle-controls button {
  min-height: 48px;
  padding: 0.65rem 1rem;
  border: 1px solid var(--blue);
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--blue);
  cursor: pointer;
  font-weight: 600;
  transition: background-color var(--ease), box-shadow var(--ease), color var(--ease);
}

.toggle-controls button[aria-pressed="true"] {
  background: var(--blue);
  color: var(--paper);
  box-shadow: 0 0 18px rgb(0 168 224 / 18%);
}

.toggle-stage {
  max-width: 960px;
  margin-left: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--paper);
  box-shadow: var(--shadow);
}

.toggle-panel {
  padding: clamp(1rem, 3vw, 2rem);
}

.panel-label {
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--line);
}

.evidence-row {
  display: grid;
  grid-template-columns: minmax(160px, 0.34fr) minmax(0, 0.66fr);
  gap: 1.5rem;
  padding-block: 1rem;
  border-bottom: 1px solid var(--soft-line);
}

.evidence-row:last-child {
  border-bottom: 0;
}

.evidence-row h3,
.evidence-row p {
  margin: 0;
}

.endnotes ol {
  display: grid;
  max-width: 960px;
  margin: 0 0 0 auto;
  padding-left: 1.5rem;
  gap: 0.5rem;
}

.endnotes li {
  padding-left: 0.5rem;
}

.endnotes a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  font-size: 1rem;
}

.next-file {
  display: grid;
  max-width: 960px;
  margin-left: auto;
  padding: clamp(1.5rem, 4vw, 2.5rem);
  border: 1px solid #8da3b1;
  border-radius: var(--radius);
  border-top: 4px solid var(--electric);
  background: var(--wash);
}

.next-file p {
  margin-bottom: 0.5rem;
}

.next-file a,
.primary-action {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  color: var(--blue);
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  font-weight: 700;
}

.compare-side .micro,
.panel-label,
.next-file .micro {
  font-size: 1rem;
}

.primary-action {
  width: fit-content;
  margin-top: 1rem;
  padding: 0.65rem 1rem;
  border: 1px solid #a85100;
  border-radius: var(--radius);
  background: #ffe0ad;
  color: #633300;
  font-size: 1rem;
  text-decoration: none;
}

@keyframes assemble {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes signal {
  50% {
    opacity: 0.55;
  }
}

@media (max-width: 767px) {
  .breadcrumb {
    width: 100%;
    overflow: hidden;
    white-space: nowrap;
  }

  .instrument-core {
    gap: 0.5rem;
    padding-inline: 1rem;
  }

  .compare-row,
  .compare-row.reverse {
    grid-template-columns: minmax(0, 1fr);
  }

  .compare-row.reverse .claim-side,
  .compare-row.reverse .compare-joint,
  .compare-row.reverse .answer-side {
    order: initial;
  }

  .compare-joint {
    min-height: 40px;
  }

  .compare-joint span {
    width: 1px;
    height: 100%;
  }

  .answer-side,
  [data-tone="orange"] .answer-side,
  [data-tone="green"] .answer-side {
    border-left-width: 1px;
    border-top: 4px solid var(--electric);
  }

  [data-tone="orange"] .answer-side {
    border-top-color: var(--orange);
  }

  [data-tone="green"] .answer-side {
    border-top-color: var(--green);
  }

  .desk-link {
    grid-template-columns: 32px minmax(0, 1fr) 32px;
    gap: 0.5rem;
    padding-inline: 0.5rem;
  }

  .desk-link:hover {
    padding-inline: 0.75rem 0.25rem;
  }

  .step {
    grid-template-columns: 48px minmax(0, 1fr);
    gap: 1rem;
  }

  .step-letter {
    width: 40px;
    height: 40px;
  }

  .toggle-controls {
    flex-wrap: wrap;
  }

  .toggle-controls button {
    flex: 1 1 140px;
  }

  .evidence-row {
    grid-template-columns: minmax(0, 1fr);
    gap: 0.5rem;
  }
}