.research-nav-current {
  color: var(--color-ink);
}

.research-nav-current::after {
  transform: scaleX(1);
}

.research-mobile-current {
  display: flex;
  align-items: center;
  color: var(--color-signal);
  font-weight: 700;
}

.research-footer-current {
  margin-bottom: var(--space-3);
  color: #6f9f92;
  font-size: 0.8rem;
  text-decoration: none;
}

.research-page {
  background: var(--color-canvas);
}

.research-page main {
  overflow: clip;
}

.research-page h1,
.research-page h2,
.research-page h3,
.research-page p,
.research-page blockquote,
.research-page dl,
.research-page dd,
.research-page ol,
.research-page ul {
  margin-top: 0;
}

.research-page h2,
.research-page h3 {
  margin-bottom: 0;
}

.research-page .section-index {
  display: flex;
  align-items: baseline;
  gap: 0.8rem;
}

.research-page .section-index span {
  color: var(--color-signal);
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.04em;
}

.research-page .section-index p {
  margin-bottom: 0;
  color: var(--color-ink-faint);
  font-family: var(--font-mono);
  font-size: 0.64rem;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.research-page .section-index-light span {
  color: #80b7a7;
}

.research-page .section-index-light p {
  color: #82938e;
}

.research-prepublication,
.featured-note-id,
.research-note-en,
.featured-note-en,
.note-back-link,
.archive-register-note {
  font-family: var(--font-mono);
}

/* Research archive */

.research-archive-hero {
  padding-block: clamp(5.5rem, 9vw, 8.5rem);
  border-bottom: 1px solid var(--color-line);
}

.research-archive-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(24rem, 0.78fr);
  align-items: start;
  gap: clamp(4rem, 8vw, 8rem);
}

.research-archive-hero-grid > *,
.featured-note > *,
.research-scope-layout > *,
.archive-principles-layout > *,
.research-pathways-layout > *,
.research-note-hero-grid > *,
.note-question-layout > *,
.note-two-column-copy > *,
.note-wide-heading > *,
.note-takeaway-layout > * {
  min-width: 0;
}

.research-prepublication {
  display: inline-flex;
  margin: 0 0 1.25rem;
  padding: 0.38rem 0.58rem;
  border: 1px solid var(--color-line-strong);
  color: var(--color-ink-faint);
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.research-archive-hero h1 {
  max-width: 10.5em;
  font-size: clamp(3.65rem, 5.6vw, 5.7rem);
  letter-spacing: -0.07em;
  line-height: 1.03;
}

.research-archive-hero h1 span {
  display: block;
}

.research-archive-hero h1 span:last-child {
  color: var(--color-signal);
}

.research-archive-lead {
  max-width: 38rem;
  margin: 2rem 0 0;
  color: var(--color-ink);
  font-size: clamp(1.05rem, 1.45vw, 1.28rem);
  line-height: 1.75;
}

.research-archive-support {
  max-width: 37rem;
  margin: 1.25rem 0 0;
  color: var(--color-ink-soft);
  font-size: 0.92rem;
  line-height: 1.8;
}

.research-archive-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2.25rem;
}

.archive-register {
  border-top: 3px solid var(--color-signal);
  background: var(--color-surface);
  box-shadow: var(--shadow-panel);
}

.archive-register header,
.note-identity header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.2rem;
  border-bottom: 1px solid var(--color-line);
}

.archive-register header p,
.note-identity header p {
  margin-bottom: 0;
  color: var(--color-signal);
}

.archive-register header span,
.note-identity header span {
  color: var(--color-ink-faint);
  font-family: var(--font-mono);
  font-size: 0.56rem;
  letter-spacing: 0.07em;
}

.archive-register dl,
.note-identity dl {
  margin-bottom: 0;
  padding: 0 1.2rem;
}

.archive-register dl > div,
.note-identity dl > div {
  display: grid;
  grid-template-columns: minmax(7rem, 0.78fr) minmax(0, 1.22fr);
  gap: 1rem;
  padding-block: 1rem;
  border-bottom: 1px solid var(--color-line);
}

.archive-register dt,
.note-identity dt {
  color: var(--color-ink-faint);
  font-family: var(--font-mono);
  font-size: 0.56rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.archive-register dd,
.note-identity dd {
  margin-bottom: 0;
  color: var(--color-ink);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 700;
  line-height: 1.55;
  text-align: right;
}

.archive-register-note {
  margin: 0;
  padding: 1rem 1.2rem;
  color: var(--color-ink-faint);
  font-size: 0.54rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  line-height: 1.6;
}

.research-scope {
  padding-block: clamp(6rem, 10vw, 10rem);
  background: var(--color-surface);
}

.research-scope-layout {
  display: grid;
  grid-template-columns: minmax(18rem, 0.72fr) minmax(0, 1.28fr);
  gap: clamp(4rem, 8vw, 8rem);
}

.research-section-heading .section-index {
  margin-bottom: 2rem;
}

.research-section-heading h2,
.archive-principles h2,
.research-pathways h2 {
  font-size: clamp(2.25rem, 3.6vw, 3.65rem);
  font-weight: 650;
  letter-spacing: -0.055em;
  line-height: 1.08;
}

.research-section-heading > div:last-child > p,
.archive-principles header > p {
  margin: 1.5rem 0 0;
  color: var(--color-ink-soft);
  font-size: 0.94rem;
  line-height: 1.8;
}

.research-taxonomy {
  margin-bottom: 0;
  padding: 0;
  border-top: 1px solid var(--color-line-strong);
  list-style: none;
}

.research-taxonomy li {
  display: grid;
  grid-template-columns: 3.25rem minmax(11rem, 0.75fr) minmax(0, 1.25fr);
  align-items: center;
  gap: 1.5rem;
  padding-block: 1.55rem;
  border-bottom: 1px solid var(--color-line);
}

.taxonomy-index {
  color: var(--color-signal);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 700;
}

.research-taxonomy div p {
  margin-bottom: 0.32rem;
  color: var(--color-ink-faint);
  font-family: var(--font-mono);
  font-size: 0.56rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.research-taxonomy h3 {
  font-size: 1rem;
  font-weight: 680;
}

.research-taxonomy li > p {
  margin-bottom: 0;
  color: var(--color-ink-soft);
  font-size: 0.85rem;
  line-height: 1.75;
}

.featured-research {
  padding-block: clamp(6rem, 10vw, 9.5rem);
  background: #14201d;
  color: #e9efec;
}

.featured-note-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding-bottom: 1.4rem;
  border-bottom: 1px solid rgba(213, 216, 209, 0.2);
}

.featured-note-heading > p {
  margin-bottom: 0;
  color: #71857f;
  font-family: var(--font-mono);
  font-size: 0.56rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.featured-note {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(31rem, 1.1fr);
  gap: clamp(4rem, 8vw, 8rem);
  padding-top: clamp(3rem, 5vw, 5rem);
}

.featured-note-id {
  margin-bottom: 1rem;
  color: #82b7a9;
  font-size: 0.64rem;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.featured-note h2 {
  max-width: 12em;
  color: #fff;
  font-size: clamp(2.5rem, 4vw, 4.2rem);
  font-weight: 640;
  letter-spacing: -0.06em;
  line-height: 1.08;
}

.featured-note-en {
  margin: 1.2rem 0 0;
  color: #86a098;
  font-size: 0.69rem;
  letter-spacing: 0.05em;
}

.featured-note-summary {
  max-width: 37rem;
  margin: 2rem 0 0;
  color: #b7c3bf;
  font-size: 0.95rem;
  line-height: 1.85;
}

.featured-note-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.75rem 0 0;
  padding: 0;
  list-style: none;
}

.featured-note-meta li {
  padding: 0.42rem 0.55rem;
  border: 1px solid rgba(213, 216, 209, 0.2);
  color: #91a59f;
  font-family: var(--font-mono);
  font-size: 0.52rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.featured-note-link {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  margin-top: 2rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid #6e978c;
  color: #fff;
  font-size: 0.84rem;
  font-weight: 700;
  text-decoration: none;
}

.archive-metric-preview {
  align-self: start;
  border-top: 3px solid #73aa9a;
  background: #f5f4ef;
  color: var(--color-ink);
}

.archive-denominator,
.note-denominator {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
}

.archive-denominator {
  padding: 1.35rem 1.4rem;
  border-bottom: 1px solid var(--color-line-strong);
}

.archive-denominator > div,
.note-denominator > div {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.archive-denominator strong {
  font-family: var(--font-mono);
  font-size: 2rem;
  letter-spacing: -0.07em;
}

.archive-denominator span,
.note-denominator span {
  color: var(--color-ink-faint);
  font-family: var(--font-mono);
  font-size: 0.49rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1.45;
}

.archive-denominator b,
.note-denominator b {
  color: var(--color-line-strong);
  font-family: var(--font-mono);
  font-size: 1.1rem;
}

.archive-result-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr)) minmax(0, 0.86fr);
}

.archive-result-grid > div {
  min-width: 0;
  padding: 1.45rem;
  border-right: 1px solid var(--color-line);
}

.archive-result-grid > div:last-child {
  border-right: 0;
}

.archive-result-grid p {
  margin-bottom: 0.75rem;
  color: var(--color-ink-faint);
  font-family: var(--font-mono);
  font-size: 0.54rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.archive-result-grid strong {
  display: block;
  white-space: nowrap;
  font-family: var(--font-mono);
  font-size: clamp(2.25rem, 3vw, 3.25rem);
  letter-spacing: -0.08em;
}

.archive-result-grid span {
  display: block;
  margin-top: 0.45rem;
  color: var(--color-not-selected);
  font-family: var(--font-mono);
  font-size: 0.55rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.archive-result-mention {
  background: var(--color-mentioned-soft);
}

.archive-result-mention strong {
  color: var(--color-mentioned);
  font-size: clamp(1.8rem, 2.5vw, 2.6rem);
}

.archive-result-mention span {
  color: var(--color-mentioned);
}

.archive-result-mention small {
  display: block;
  margin-top: 0.8rem;
  color: var(--color-ink-soft);
  font-family: var(--font-mono);
  font-size: 0.48rem;
  font-weight: 700;
  line-height: 1.5;
}

.archive-state-equation {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(0.6rem, 2vw, 1.5rem);
  padding: 1rem 1.4rem;
  border-top: 1px solid var(--color-line-strong);
  border-bottom: 1px solid var(--color-line);
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.archive-state-equation b {
  color: var(--color-signal);
  font-size: 1rem;
}

.archive-metric-boundary {
  margin: 0;
  padding: 1rem 1.4rem;
  color: var(--color-ink-soft);
  font-size: 0.72rem;
  line-height: 1.7;
}

.archive-principles {
  padding-block: clamp(6rem, 9vw, 9rem);
}

.archive-principles-layout {
  display: grid;
  grid-template-columns: minmax(18rem, 0.78fr) minmax(0, 1.22fr);
  gap: clamp(4rem, 8vw, 8rem);
}

.archive-principles .section-index {
  margin-bottom: 2rem;
}

.principle-ledger {
  margin-bottom: 0;
  padding: 0;
  border-top: 1px solid var(--color-line-strong);
  list-style: none;
}

.principle-ledger li {
  display: grid;
  grid-template-columns: 3rem minmax(0, 1fr);
  gap: 1.25rem;
  padding-block: 1.35rem;
  border-bottom: 1px solid var(--color-line);
}

.principle-ledger li > span {
  color: var(--color-signal);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 700;
}

.principle-ledger h3 {
  color: var(--color-ink);
  font-family: var(--font-mono);
  font-size: 0.69rem;
  letter-spacing: 0.06em;
}

.principle-ledger p {
  margin: 0.55rem 0 0;
  color: var(--color-ink-soft);
  font-size: 0.84rem;
  line-height: 1.7;
}

.research-pathways {
  padding-block: clamp(5rem, 8vw, 7.5rem);
  border-top: 1px solid var(--color-line);
  background: var(--color-surface);
}

.research-pathways-layout {
  display: grid;
  grid-template-columns: minmax(18rem, 0.8fr) minmax(0, 1.2fr);
  align-items: end;
  gap: clamp(4rem, 8vw, 8rem);
}

.research-pathway-links {
  border-top: 1px solid var(--color-line-strong);
}

.research-pathway-links a {
  display: grid;
  grid-template-columns: minmax(7rem, 0.55fr) minmax(10rem, 0.9fr) minmax(0, 1.3fr) auto;
  align-items: center;
  gap: 1rem;
  padding-block: 1.25rem;
  border-bottom: 1px solid var(--color-line);
  text-decoration: none;
}

.research-pathway-links a > span {
  color: var(--color-signal);
  font-family: var(--font-mono);
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.research-pathway-links strong {
  font-size: 0.94rem;
}

.research-pathway-links small {
  color: var(--color-ink-soft);
  font-size: 0.75rem;
  line-height: 1.55;
}

.research-pathway-links b {
  color: var(--color-signal);
  font-family: var(--font-mono);
}

/* Research note */

.research-note-hero {
  padding-block: clamp(4.5rem, 8vw, 7.5rem);
  border-bottom: 1px solid var(--color-line);
}

.research-note-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(22rem, 0.72fr);
  align-items: start;
  gap: clamp(4rem, 8vw, 8rem);
}

.note-back-link {
  display: inline-flex;
  gap: 0.6rem;
  margin-bottom: 2.25rem;
  color: var(--color-ink-faint);
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-decoration: none;
}

.research-note-hero .eyebrow {
  margin-bottom: 1.25rem;
}

.research-note-hero h1 {
  max-width: 12em;
  font-size: clamp(3.15rem, 5vw, 5.1rem);
  letter-spacing: -0.07em;
  line-height: 1.05;
}

.research-note-hero h1 span {
  display: block;
}

.research-note-hero h1 span:nth-child(n+2) {
  color: var(--color-signal);
}

.research-note-en {
  margin: 1.35rem 0 0;
  color: var(--color-ink-faint);
  font-size: 0.66rem;
  letter-spacing: 0.05em;
}

.research-note-lead {
  max-width: 43rem;
  margin: 2rem 0 0;
  color: var(--color-ink-soft);
  font-size: 1.02rem;
  line-height: 1.8;
}

.note-identity {
  border-top: 3px solid var(--color-signal);
  background: var(--color-surface);
  box-shadow: var(--shadow-panel);
}

.note-identity > p {
  margin: 0;
  padding: 1rem 1.2rem;
  color: var(--color-ink-faint);
  font-family: var(--font-mono);
  font-size: 0.52rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  line-height: 1.55;
}

.note-section {
  padding-block: clamp(5.5rem, 9vw, 8.5rem);
}

.note-reading-shell {
  max-width: 68rem;
}

.note-section-heading {
  display: grid;
  grid-template-columns: minmax(10rem, 0.42fr) minmax(0, 1.58fr);
  align-items: start;
  gap: clamp(2.5rem, 6vw, 6rem);
  margin-bottom: clamp(2.75rem, 5vw, 4.5rem);
}

.note-section-heading h2 {
  font-size: clamp(2.2rem, 3.7vw, 3.75rem);
  font-weight: 650;
  letter-spacing: -0.055em;
  line-height: 1.08;
}

.note-wide-heading {
  grid-template-columns: minmax(10rem, 0.34fr) minmax(0, 1.66fr);
}

.note-wide-heading > div:last-child > p {
  max-width: 51rem;
  margin: 1.35rem 0 0;
  color: var(--color-ink-soft);
  font-size: 0.94rem;
  line-height: 1.85;
}

.note-question {
  background: var(--color-surface);
}

.note-question-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(22rem, 1.28fr);
  align-items: start;
  gap: clamp(3rem, 7vw, 7rem);
}

.note-prose p {
  color: var(--color-ink-soft);
  font-size: 0.98rem;
  line-height: 1.9;
}

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

.note-prose .note-answer {
  margin-bottom: 1.4rem;
  color: var(--color-signal);
  font-size: 1.45rem;
  font-weight: 700;
}

.core-insight {
  margin-bottom: 0;
  padding: clamp(2rem, 4vw, 3.5rem);
  border-left: 4px solid var(--color-signal);
  background: var(--color-signal-soft);
}

.core-insight p {
  margin-bottom: 0.18em;
  color: var(--color-ink);
  font-size: clamp(1.8rem, 3.2vw, 3.15rem);
  font-weight: 650;
  letter-spacing: -0.05em;
  line-height: 1.2;
}

.core-insight p:nth-child(n+2) {
  color: var(--color-signal);
}

.note-two-column-copy {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(3rem, 7vw, 7rem);
}

.question-quote {
  margin: 1.25rem 0 1.5rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--color-line-strong);
  border-bottom: 1px solid var(--color-line-strong);
  color: var(--color-ink);
  font-size: clamp(1.45rem, 2.3vw, 2.2rem);
  font-weight: 640;
  letter-spacing: -0.04em;
}

.note-prose .note-emphasis {
  margin-top: 1.7rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--color-line);
  color: var(--color-ink);
  font-weight: 650;
}

.note-method {
  background: var(--color-surface);
}

.note-model-register {
  display: grid;
  grid-template-columns: 0.85fr 1.35fr 1fr;
  border-top: 1px solid var(--color-line-strong);
  border-bottom: 1px solid var(--color-line-strong);
}

.note-model-register > div {
  min-width: 0;
  padding: 1.25rem;
  border-right: 1px solid var(--color-line);
}

.note-model-register > div:last-child {
  border-right: 0;
}

.note-model-register span,
.note-model-register strong {
  display: block;
  font-family: var(--font-mono);
}

.note-model-register span {
  margin-bottom: 0.6rem;
  color: var(--color-ink-faint);
  font-size: 0.54rem;
  font-weight: 700;
  letter-spacing: 0.07em;
}

.note-model-register strong {
  overflow-wrap: anywhere;
  font-size: 0.68rem;
  line-height: 1.6;
}

.condition-comparison {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 2rem;
  border-top: 3px solid var(--color-ink);
  border-bottom: 1px solid var(--color-line-strong);
}

.condition-comparison article {
  min-width: 0;
  padding: clamp(1.5rem, 3vw, 2.25rem);
  border-right: 1px solid var(--color-line);
}

.condition-comparison article:last-child {
  border-right: 0;
}

.condition-code {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 2.5rem;
}

.condition-code span {
  display: grid;
  width: 2rem;
  height: 2rem;
  place-items: center;
  background: var(--color-signal-soft);
  color: var(--color-signal);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
}

.condition-code p {
  margin-bottom: 0;
  color: var(--color-signal);
  font-family: var(--font-mono);
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.condition-comparison h3 {
  font-size: 1.2rem;
  font-weight: 680;
}

.condition-comparison article > p {
  min-height: 6.2em;
  margin: 1rem 0 1.4rem;
  color: var(--color-ink-soft);
  font-size: 0.84rem;
  line-height: 1.75;
}

.condition-comparison dl {
  margin-bottom: 0;
  padding-top: 1rem;
  border-top: 1px solid var(--color-line);
}

.condition-comparison dt {
  color: var(--color-ink-faint);
  font-family: var(--font-mono);
  font-size: 0.54rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.condition-comparison dd {
  margin: 0.55rem 0 0;
  color: var(--color-ink);
  font-size: 0.8rem;
  line-height: 1.7;
}

.condition-boundary {
  margin: 1.25rem 0 0;
  color: var(--color-ink-soft);
  font-size: 0.76rem;
  line-height: 1.75;
}

.condition-boundary span,
.note-denominator-boundary span,
.grounding-exclusion span {
  margin-right: 0.7rem;
  color: var(--color-signal);
  font-family: var(--font-mono);
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.07em;
}

.note-results {
  background: #14201d;
  color: #edf2ef;
}

.note-results-heading h2 {
  color: #fff;
}

.note-results-heading > div:last-child > p {
  color: #9cadA7;
}

.note-metric-system {
  border-top: 4px solid #75aa9b;
  background: #f5f4ef;
  color: var(--color-ink);
}

.note-denominator {
  padding: 1.5rem clamp(1.25rem, 3vw, 2.25rem);
  border-bottom: 1px solid var(--color-line-strong);
}

.note-denominator > div {
  justify-content: center;
}

.note-denominator strong {
  font-family: var(--font-mono);
  font-size: clamp(2.4rem, 4vw, 4rem);
  letter-spacing: -0.08em;
}

.note-denominator b {
  font-size: 1.5rem;
}

.note-result-hierarchy {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr)) minmax(0, 0.76fr);
  border-bottom: 1px solid var(--color-line-strong);
}

.note-result-hierarchy article {
  min-width: 0;
  padding: clamp(1.75rem, 4vw, 3rem);
  border-right: 1px solid var(--color-line);
}

.note-result-hierarchy article:last-child {
  border-right: 0;
}

.note-result-hierarchy article > p {
  margin-bottom: 1rem;
  color: var(--color-ink-faint);
  font-family: var(--font-mono);
  font-size: 0.56rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.note-result-hierarchy article > strong {
  display: block;
  white-space: nowrap;
  font-family: var(--font-mono);
  font-size: clamp(3.5rem, 6vw, 6.25rem);
  letter-spacing: -0.1em;
  line-height: 0.95;
}

.note-result-hierarchy h3 {
  margin-top: 1.25rem;
  font-size: 1.05rem;
  font-weight: 680;
}

.note-result-hierarchy article > span {
  display: block;
  margin-top: 0.55rem;
  color: var(--color-ink-soft);
  font-size: 0.76rem;
}

.note-mention-result {
  background: var(--color-mentioned-soft);
}

.note-mention-result > strong {
  color: var(--color-mentioned);
  font-size: clamp(2.6rem, 4.4vw, 4.5rem) !important;
}

.note-mention-result small {
  display: block;
  margin-top: 1.3rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(80, 108, 130, 0.3);
  color: var(--color-mentioned);
  font-family: var(--font-mono);
  font-size: 0.52rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  line-height: 1.6;
}

.state-distinction {
  display: grid;
  grid-template-columns: minmax(14rem, 0.7fr) minmax(0, 1.3fr);
  gap: clamp(2rem, 5vw, 5rem);
  padding: clamp(1.75rem, 4vw, 3rem);
  border-bottom: 1px solid var(--color-line);
}

.state-distinction header p {
  margin-bottom: 0.75rem;
  color: var(--color-signal);
}

.state-distinction header h3 {
  font-family: var(--font-mono);
  font-size: clamp(1rem, 1.8vw, 1.45rem);
  line-height: 1.45;
}

.state-distinction dl {
  margin-bottom: 0;
}

.state-distinction dl > div {
  display: grid;
  grid-template-columns: minmax(8rem, 0.55fr) minmax(0, 1.45fr);
  gap: 1rem;
  padding-block: 0.75rem;
  border-bottom: 1px solid var(--color-line);
}

.state-distinction dl > div:last-child {
  border-bottom: 0;
}

.state-distinction dt {
  color: var(--color-signal);
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.07em;
}

.state-distinction dd {
  margin-bottom: 0;
  color: var(--color-ink-soft);
  font-size: 0.78rem;
  line-height: 1.65;
}

.note-denominator-boundary {
  margin: 0;
  padding: 1.25rem clamp(1.25rem, 3vw, 2.25rem);
  color: var(--color-ink-soft);
  font-size: 0.76rem;
  line-height: 1.75;
}

.note-observation-copy {
  max-width: 52rem;
  margin: 3rem auto 0;
}

.note-observation-copy p {
  color: #bac6c2;
}

.note-observation-copy blockquote {
  margin: 2rem 0 0;
  padding: 1.5rem 0 0;
  border-top: 1px solid rgba(213, 216, 209, 0.24);
  color: #fff;
  font-size: clamp(1.45rem, 2.4vw, 2.3rem);
  font-weight: 620;
  letter-spacing: -0.035em;
  line-height: 1.4;
}

.note-conditions {
  background: var(--color-surface);
}

.condition-observations {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: stretch;
  border-top: 1px solid var(--color-line-strong);
  border-bottom: 1px solid var(--color-line-strong);
}

.condition-observations > div:not(.condition-not-equal) {
  padding: 2rem;
}

.condition-observations p {
  margin-bottom: 0.75rem;
  color: var(--color-signal);
  font-family: var(--font-mono);
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.07em;
}

.condition-observations h3 {
  font-size: 1.25rem;
}

.condition-observations span {
  display: block;
  margin-top: 0.8rem;
  color: var(--color-ink-soft);
  font-size: 0.84rem;
  line-height: 1.7;
}

.condition-not-equal {
  display: grid;
  min-width: 4rem;
  place-items: center;
  border-right: 1px solid var(--color-line);
  border-left: 1px solid var(--color-line);
  color: var(--color-signal);
  font-family: var(--font-mono);
  font-size: 1.5rem;
}

.note-boundary-copy {
  margin: 1.25rem 0 0;
  color: var(--color-ink-soft);
  font-size: 0.82rem;
  line-height: 1.8;
}

.brand-state-ledger {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  margin-bottom: 0;
  padding: 0;
  border-top: 3px solid var(--color-ink);
  border-bottom: 1px solid var(--color-line-strong);
  list-style: none;
}

.brand-state-ledger li {
  min-width: 0;
  padding: 1.6rem;
  border-right: 1px solid var(--color-line);
}

.brand-state-ledger li:last-child {
  border-right: 0;
}

.brand-state-ledger li > span {
  color: var(--color-signal);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
}

.brand-state-ledger p {
  min-height: 2.5em;
  margin: 2rem 0 0.8rem;
  color: var(--color-ink-faint);
  font-family: var(--font-mono);
  font-size: 0.53rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  line-height: 1.45;
}

.brand-state-ledger h3 {
  font-size: 0.94rem;
  font-weight: 650;
  line-height: 1.65;
}

.brand-meaning-close {
  max-width: 48rem;
  margin: 2rem 0 0;
  color: var(--color-ink-soft);
  font-size: 0.94rem;
  line-height: 1.85;
}

.note-evidence {
  background: #1c2724;
  color: #e8eeeb;
}

.note-evidence-panel {
  display: grid;
  grid-template-columns: minmax(19rem, 0.78fr) minmax(0, 1.22fr);
  gap: clamp(4rem, 8vw, 8rem);
}

.note-evidence header .section-index {
  margin-bottom: 2rem;
}

.note-evidence h2 {
  color: #fff;
  font-size: clamp(2.35rem, 3.8vw, 3.9rem);
  font-weight: 640;
  letter-spacing: -0.055em;
  line-height: 1.08;
}

.note-evidence header > p {
  margin: 1.5rem 0 0;
  color: #9eada8;
  font-size: 0.9rem;
  line-height: 1.8;
}

.evidence-boundary-list {
  margin-bottom: 0;
  padding: 0;
  border-top: 1px solid rgba(213, 216, 209, 0.25);
  list-style: none;
}

.evidence-boundary-list li {
  display: grid;
  grid-template-columns: 3rem minmax(0, 1fr);
  gap: 1rem;
  padding-block: 1.1rem;
  border-bottom: 1px solid rgba(213, 216, 209, 0.17);
}

.evidence-boundary-list span {
  color: #76aa9b;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  font-weight: 700;
}

.evidence-boundary-list p {
  margin-bottom: 0;
  color: #c0cbc7;
  font-size: 0.83rem;
  line-height: 1.7;
}

.grounding-exclusion {
  grid-column: 2;
  margin: 0;
  padding-top: 1.25rem;
  color: #82938e;
  font-size: 0.74rem;
  line-height: 1.75;
}

.grounding-exclusion span {
  color: #77aa9b;
}

.note-takeaway {
  background: var(--color-surface);
}

.note-takeaway-layout {
  display: grid;
  grid-template-columns: minmax(20rem, 0.92fr) minmax(0, 1.08fr);
  gap: clamp(4rem, 8vw, 8rem);
}

.note-takeaway .section-index {
  margin-bottom: 2rem;
}

.note-takeaway h2 {
  font-size: clamp(2.55rem, 4.2vw, 4.35rem);
  font-weight: 640;
  letter-spacing: -0.06em;
  line-height: 1.08;
}

.note-takeaway h2 span {
  display: block;
}

.note-takeaway h2 span:last-child {
  margin-top: 0.16em;
  color: var(--color-signal);
}

.takeaway-copy > p {
  color: var(--color-ink-soft);
  font-size: 0.94rem;
  line-height: 1.85;
}

.takeaway-copy blockquote {
  margin: 1.75rem 0;
  padding: 1.75rem 0;
  border-top: 1px solid var(--color-line-strong);
  border-bottom: 1px solid var(--color-line-strong);
  color: var(--color-ink);
  font-size: clamp(1.45rem, 2.5vw, 2.45rem);
  font-weight: 620;
  letter-spacing: -0.04em;
  line-height: 1.45;
}

.note-pathways {
  padding-block: clamp(4rem, 7vw, 6rem);
  border-top: 1px solid var(--color-line);
}

.note-pathways-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--color-line-strong);
}

.note-pathways a {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.55rem 1rem;
  padding: 1.5rem;
  border-right: 1px solid var(--color-line);
  border-bottom: 1px solid var(--color-line-strong);
  text-decoration: none;
}

.note-pathways a:last-child {
  border-right: 0;
}

.note-pathways a > span,
.note-pathways a > small {
  grid-column: 1;
}

.note-pathways a > span {
  color: var(--color-signal);
  font-family: var(--font-mono);
  font-size: 0.56rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.note-pathways strong {
  font-size: 1rem;
}

.note-pathways small {
  color: var(--color-ink-soft);
  font-size: 0.74rem;
  line-height: 1.55;
}

.note-pathways b {
  grid-row: 1 / span 3;
  grid-column: 2;
  align-self: center;
  color: var(--color-signal);
  font-family: var(--font-mono);
}

@media (max-width: 68rem) {
  .research-archive-hero-grid,
  .research-note-hero-grid {
    gap: 4rem;
  }

  .featured-note {
    grid-template-columns: minmax(0, 0.8fr) minmax(28rem, 1.2fr);
    gap: 4rem;
  }

  .brand-state-ledger {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .brand-state-ledger li:nth-child(3) {
    border-right: 0;
  }

  .brand-state-ledger li:nth-child(n+4) {
    border-top: 1px solid var(--color-line);
  }
}

@media (max-width: 52rem) {
  .research-archive-hero-grid,
  .research-scope-layout,
  .featured-note,
  .archive-principles-layout,
  .research-pathways-layout,
  .research-note-hero-grid,
  .note-question-layout,
  .note-evidence-panel,
  .note-takeaway-layout {
    grid-template-columns: 1fr;
  }

  .research-archive-hero {
    padding-block: 4.5rem 5.5rem;
  }

  .research-archive-hero h1,
  .research-note-hero h1 {
    font-size: clamp(3rem, 10vw, 4.1rem);
  }

  .archive-register,
  .note-identity {
    max-width: 34rem;
  }

  .research-scope-layout,
  .archive-principles-layout,
  .research-pathways-layout,
  .note-evidence-panel,
  .note-takeaway-layout {
    gap: 3.5rem;
  }

  .research-taxonomy li {
    grid-template-columns: 2.5rem minmax(10rem, 0.9fr) minmax(0, 1.1fr);
    gap: 1rem;
  }

  .featured-note {
    gap: 3.5rem;
  }

  .featured-note h2 br {
    display: none;
  }

  .research-pathway-links a {
    grid-template-columns: minmax(6rem, 0.5fr) minmax(9rem, 0.8fr) minmax(0, 1.2fr) auto;
  }

  .note-section-heading,
  .note-wide-heading {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .note-section-heading {
    margin-bottom: 2.75rem;
  }

  .note-question-layout {
    gap: 2.5rem;
  }

  .note-two-column-copy {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .note-model-register {
    grid-template-columns: 1fr;
  }

  .note-model-register > div {
    border-right: 0;
    border-bottom: 1px solid var(--color-line);
  }

  .note-model-register > div:last-child {
    border-bottom: 0;
  }

  .condition-comparison {
    grid-template-columns: 1fr;
  }

  .condition-comparison article {
    border-right: 0;
    border-bottom: 1px solid var(--color-line);
  }

  .condition-comparison article:last-child {
    border-bottom: 0;
  }

  .condition-comparison article > p {
    min-height: auto;
  }

  .condition-code {
    margin-bottom: 1.5rem;
  }

  .note-result-hierarchy {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .note-result-hierarchy .note-mention-result {
    grid-column: 1 / -1;
    border-top: 1px solid var(--color-line);
    border-right: 0;
  }

  .state-distinction {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .condition-observations {
    grid-template-columns: 1fr;
  }

  .condition-not-equal {
    min-height: 3.5rem;
    border: 0;
    border-top: 1px solid var(--color-line);
    border-bottom: 1px solid var(--color-line);
  }

  .brand-state-ledger {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .brand-state-ledger li,
  .brand-state-ledger li:nth-child(3) {
    border-right: 1px solid var(--color-line);
  }

  .brand-state-ledger li:nth-child(even) {
    border-right: 0;
  }

  .brand-state-ledger li:nth-child(n+3) {
    border-top: 1px solid var(--color-line);
  }

  .grounding-exclusion {
    grid-column: 1;
  }

  .note-pathways-grid {
    grid-template-columns: 1fr;
  }

  .note-pathways a,
  .note-pathways a:last-child {
    border-right: 0;
  }
}

@media (max-width: 30rem) {
  .research-page .shell {
    width: min(calc(100% - 2rem), var(--shell-width));
  }

  .research-archive-hero,
  .research-note-hero {
    padding-block: 3.75rem 4.5rem;
  }

  .research-archive-hero-grid,
  .research-note-hero-grid {
    gap: 3rem;
  }

  .research-archive-hero h1,
  .research-note-hero h1 {
    max-width: none;
    font-size: clamp(2.55rem, 12.3vw, 3.15rem);
    line-height: 1.08;
  }

  .research-archive-lead,
  .research-note-lead {
    font-size: 0.96rem;
  }

  .research-archive-actions,
  .research-archive-actions .button {
    width: 100%;
  }

  .archive-register header,
  .note-identity header,
  .archive-register dl,
  .note-identity dl {
    padding-inline: 1rem;
  }

  .archive-register header span,
  .note-identity header span {
    display: none;
  }

  .archive-register dl > div,
  .note-identity dl > div {
    grid-template-columns: 1fr;
    gap: 0.45rem;
  }

  .archive-register dd,
  .note-identity dd {
    text-align: left;
  }

  .research-scope,
  .featured-research,
  .archive-principles,
  .research-pathways,
  .note-section {
    padding-block: 4.75rem;
  }

  .research-section-heading h2,
  .archive-principles h2,
  .research-pathways h2,
  .note-section-heading h2,
  .note-evidence h2 {
    font-size: clamp(2rem, 9vw, 2.5rem);
  }

  .research-taxonomy li {
    grid-template-columns: 2.25rem minmax(0, 1fr);
    align-items: start;
  }

  .research-taxonomy li > p {
    grid-column: 2;
  }

  .featured-note-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.75rem;
  }

  .featured-note h2 {
    font-size: 2.35rem;
  }

  .archive-denominator,
  .note-denominator {
    padding-inline: 0.8rem;
  }

  .archive-denominator > div,
  .note-denominator > div {
    align-items: flex-start;
    flex-direction: column;
    gap: 0.25rem;
  }

  .archive-denominator strong {
    font-size: 1.75rem;
  }

  .archive-denominator span,
  .note-denominator span {
    font-size: 0.43rem;
  }

  .archive-denominator b,
  .note-denominator b {
    font-size: 0.9rem;
  }

  .archive-result-grid {
    grid-template-columns: 1fr;
  }

  .archive-result-grid > div {
    border-right: 0;
    border-bottom: 1px solid var(--color-line);
  }

  .archive-state-equation {
    gap: 0.45rem;
    padding-inline: 0.75rem;
    font-size: 0.48rem;
    letter-spacing: 0.02em;
  }

  .research-pathway-links a {
    grid-template-columns: 1fr auto;
  }

  .research-pathway-links a > span,
  .research-pathway-links strong,
  .research-pathway-links small {
    grid-column: 1;
  }

  .research-pathway-links b {
    grid-row: 1 / span 3;
    grid-column: 2;
  }

  .note-back-link {
    margin-bottom: 1.75rem;
  }

  .core-insight {
    padding: 1.5rem;
  }

  .core-insight p {
    font-size: 1.55rem;
  }

  .note-denominator strong {
    font-size: 2rem;
  }

  .note-result-hierarchy {
    grid-template-columns: 1fr;
  }

  .note-result-hierarchy article,
  .note-result-hierarchy .note-mention-result {
    grid-column: auto;
    padding: 1.5rem;
    border-right: 0;
    border-bottom: 1px solid var(--color-line);
  }

  .note-result-hierarchy article > strong {
    font-size: 3.8rem;
  }

  .note-mention-result > strong {
    font-size: 3rem !important;
  }

  .state-distinction {
    padding: 1.5rem;
  }

  .state-distinction dl > div {
    grid-template-columns: 1fr;
    gap: 0.45rem;
  }

  .note-denominator-boundary {
    padding: 1rem;
  }

  .note-observation-copy blockquote br,
  .takeaway-copy blockquote br {
    display: none;
  }

  .condition-observations > div:not(.condition-not-equal) {
    padding: 1.5rem;
  }

  .brand-state-ledger {
    grid-template-columns: 1fr;
  }

  .brand-state-ledger li,
  .brand-state-ledger li:nth-child(3),
  .brand-state-ledger li:nth-child(even) {
    border-right: 0;
  }

  .brand-state-ledger li:nth-child(n+2) {
    border-top: 1px solid var(--color-line);
  }

  .brand-state-ledger p {
    min-height: 0;
    margin-top: 1.25rem;
  }

  .note-takeaway h2 {
    font-size: 2.45rem;
  }

  .note-pathways a {
    padding-inline: 0;
  }
}