:root {
  color-scheme: light;
  --ink: #151a18;
  --ink-soft: #5e6763;
  --ink-faint: #818985;
  --paper: #f5f5f1;
  --surface: #ffffff;
  --surface-soft: #fafaf7;
  --line: #d8dcd8;
  --line-dark: #b9c0bb;
  --measured: #176b55;
  --measured-soft: #e9f3ef;
  --derived: #6758c9;
  --derived-soft: #f0eefb;
  --caution: #8a5a00;
  --caution-soft: #fbf5e8;
  --failure: #a94335;
  --failure-soft: #fbefec;
  --serif: ui-serif, "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  --page: 1180px;
  --radius: 8px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

button,
textarea,
input {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

a {
  color: inherit;
}

code,
kbd {
  font-family: var(--mono);
}

[hidden] {
  display: none !important;
}

#workspace,
#examples,
#evidence,
#protocol,
#companion,
.result-panel {
  scroll-margin-top: 82px;
}

.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 10px 14px;
  color: white;
  background: var(--ink);
  border-radius: 4px;
  transform: translateY(-150%);
}

.skip-link:focus {
  transform: translateY(0);
}

:focus-visible {
  outline: 2px solid var(--derived);
  outline-offset: 3px;
}

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  background: rgba(245, 245, 241, 0.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}

.header-inner {
  width: min(calc(100% - 48px), var(--page));
  min-height: 66px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 30px;
}

.brand {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  gap: 11px;
  text-decoration: none;
  flex: 0 0 auto;
}

.brand-mark {
  width: 24px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3px;
}

.brand-mark span {
  display: block;
  width: 2px;
  background: var(--measured);
  border-radius: 1px;
}

.brand-mark span:nth-child(1) { height: 10px; }
.brand-mark span:nth-child(2) { height: 24px; }
.brand-mark span:nth-child(3) { height: 15px; }

.brand-copy {
  display: grid;
  line-height: 1.1;
}

.brand-copy strong {
  font-size: 14px;
  letter-spacing: -0.01em;
}

.brand-copy small {
  margin-top: 4px;
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.site-nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 24px;
}

.site-nav a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--ink-soft);
  font-size: 13px;
  text-decoration: none;
}

.site-nav a:hover {
  color: var(--ink);
}

.local-status {
  min-height: 34px;
  padding: 0 11px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--ink-soft);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 10px;
  white-space: nowrap;
}

.local-status > span {
  width: 7px;
  height: 7px;
  background: #39a779;
  border-radius: 50%;
}

main {
  width: min(calc(100% - 48px), var(--page));
  margin-inline: auto;
}

.hero {
  min-height: 490px;
  padding: 62px 0 54px;
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(480px, 1.08fr);
  align-items: center;
  gap: 72px;
  border-bottom: 1px solid var(--line);
}

.release-line {
  display: flex;
  align-items: center;
  gap: 0;
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.release-line span + span::before {
  content: "/";
  padding: 0 10px;
  color: var(--line-dark);
}

.hero h1,
.section-intro h2,
.claim-boundary h3 {
  font-family: var(--serif);
  font-weight: 400;
  letter-spacing: -0.045em;
}

.hero h1 {
  max-width: 720px;
  margin: 22px 0 24px;
  font-size: clamp(50px, 5vw, 72px);
  line-height: 0.98;
}

.hero h1 em {
  color: var(--derived);
  font-style: italic;
  font-weight: 400;
}

.abstract {
  max-width: 620px;
  margin: 0;
  color: #424a46;
  font-size: 17px;
  line-height: 1.65;
}

.abstract > span {
  margin-right: 10px;
  color: var(--measured);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero-actions,
.input-actions,
.download-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.hero-actions {
  margin-top: 30px;
}

.button,
.text-button {
  min-height: 44px;
  border: 1px solid var(--line-dark);
  border-radius: 5px;
  cursor: pointer;
  transition: color 140ms ease, background-color 140ms ease, border-color 140ms ease;
}

.button {
  padding: 0 17px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  color: var(--ink);
  background: var(--surface);
  font-size: 13px;
  font-weight: 650;
  text-decoration: none;
}

.button:hover:not(:disabled) {
  border-color: var(--ink);
}

.button-primary {
  color: white;
  background: var(--ink);
  border-color: var(--ink);
}

.button-primary:hover:not(:disabled) {
  background: var(--measured);
  border-color: var(--measured);
}

.button-quiet {
  color: var(--ink-soft);
  background: transparent;
}

.button-small {
  min-height: 44px;
  padding-inline: 13px;
  font-size: 12px;
}

.button-wide {
  min-width: 190px;
}

.button:disabled {
  color: #909691;
  background: #edeeda;
  border-color: var(--line);
  cursor: not-allowed;
}

.text-button {
  min-height: 44px;
  padding: 0 4px;
  color: var(--ink-soft);
  background: transparent;
  border-color: transparent;
  font-size: 12px;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.text-button:hover {
  color: var(--ink);
}

.hero-facts {
  margin: 36px 0 0;
  padding-top: 18px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  border-top: 1px solid var(--line);
}

.hero-facts div {
  min-width: 0;
}

.hero-facts dt,
.contract-row dt,
.metrics dt {
  color: var(--ink-faint);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.hero-facts dd {
  margin: 5px 0 0;
  color: var(--ink-soft);
  font-size: 11px;
  line-height: 1.4;
}

.hero-figure {
  margin: 0;
  padding: 18px 18px 14px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.hero-figure figcaption {
  padding: 0 4px 13px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}

.hero-figure figcaption span,
.section-code,
.panel-code {
  color: var(--ink-faint);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.hero-figure figcaption strong {
  font-size: 12px;
  font-weight: 600;
}

.hero-figure svg {
  width: 100%;
  height: auto;
  display: block;
}

.schema-grid line {
  stroke: #e8eae7;
  stroke-width: 1;
}

.schema-gap {
  fill: #f0f1ee;
}

.schema-envelope {
  fill: rgba(103, 88, 201, 0.09);
  stroke: none;
}

.schema-observed,
.schema-derived {
  fill: none;
  stroke-width: 4;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.schema-observed {
  stroke: var(--measured);
}

.schema-derived {
  stroke: var(--derived);
  stroke-dasharray: 9 7;
}

.schema-boundary {
  stroke: #969e99;
  stroke-width: 1;
  stroke-dasharray: 4 5;
}

.schema-axis text {
  fill: var(--ink-faint);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.06em;
}

.figure-legend {
  padding: 12px 4px 0;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 10px;
}

.figure-legend span,
.legend span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.legend-solid,
.legend-dashed,
.legend-line {
  width: 22px;
  height: 0;
  display: inline-block;
  border-top: 2px solid var(--measured);
}

.legend-dashed,
.legend-line.derived {
  border-color: var(--derived);
  border-top-style: dashed;
}

.legend-fill,
.legend-area {
  width: 22px;
  height: 8px;
  display: inline-block;
  background: var(--derived-soft);
  border: 1px solid rgba(103, 88, 201, 0.22);
}

.figure-note {
  margin: 9px 4px 0;
  color: var(--ink-faint);
  font-size: 10px;
}

.notebook,
.evidence,
.protocol,
.companion {
  padding: 78px 0;
  border-bottom: 1px solid var(--line);
}

.section-intro {
  margin-bottom: 30px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
}

.section-code,
.panel-code {
  margin: 0 0 8px;
  color: var(--measured);
}

.section-intro h2 {
  margin: 0;
  font-size: clamp(34px, 4vw, 48px);
  line-height: 1.06;
}

.section-intro > div > p:last-child,
.section-intro > p {
  max-width: 500px;
  margin: 10px 0 0;
  color: var(--ink-soft);
}

.model-status {
  min-height: 38px;
  padding: 0 12px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--ink-soft);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 10px;
  white-space: nowrap;
}

.status-light {
  width: 7px;
  height: 7px;
  background: #c99539;
  border-radius: 50%;
}

.model-status.is-ready .status-light {
  background: #39a779;
}

.model-status.is-error {
  color: var(--failure);
  background: var(--failure-soft);
  border-color: #e8c9c3;
}

.model-status.is-error .status-light {
  background: var(--failure);
}

.example-block {
  margin-bottom: 22px;
  padding: 20px;
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.example-heading {
  margin-bottom: 16px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
}

.example-heading h3 {
  margin: 0;
  font-family: var(--serif);
  font-size: 21px;
  font-weight: 400;
}

.example-heading p {
  margin: 4px 0 0;
  color: var(--ink-soft);
  font-size: 12px;
}

.example-heading > span {
  color: var(--ink-faint);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  white-space: nowrap;
}

.example-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 8px;
}

.example-card {
  min-height: 145px;
  padding: 14px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 6px;
  cursor: pointer;
  transition: border-color 140ms ease, background-color 140ms ease, transform 140ms ease;
}

.example-card:hover:not(:disabled) {
  border-color: var(--ink-soft);
  transform: translateY(-2px);
}

.example-card.is-active {
  background: var(--measured-soft);
  border-color: var(--measured);
  box-shadow: inset 0 3px 0 var(--measured);
}

.example-card.example-warning.is-active {
  background: var(--caution-soft);
  border-color: #c39743;
  box-shadow: inset 0 3px 0 #b57a17;
}

.example-card:disabled {
  color: #8d938f;
  background: #f2f2ef;
  cursor: wait;
}

.example-meta {
  width: 100%;
  margin-bottom: 21px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--ink-faint);
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.example-card strong {
  font-size: 14px;
  font-weight: 650;
}

.example-card p {
  margin: 2px 0 12px;
  color: var(--ink-soft);
  font-size: 11px;
}

.example-expectation {
  margin-top: auto;
  color: var(--measured);
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.example-warning .example-expectation {
  color: var(--caution);
}

.example-note {
  margin: 14px 0 0;
  padding: 10px 12px;
  color: var(--ink);
  background: var(--surface);
  border-left: 3px solid var(--measured);
  font-size: 11px;
}

.example-footnote {
  margin: 12px 0 0;
  color: var(--ink-faint);
  font-size: 10px;
}

.workspace-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
  align-items: start;
  gap: 12px;
}

.panel {
  min-width: 0;
  padding: 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.panel-header {
  min-height: 48px;
  padding-bottom: 17px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  border-bottom: 1px solid var(--line);
}

.panel-code {
  margin-bottom: 3px;
}

.panel-header h3 {
  margin: 0;
  font-family: var(--serif);
  font-size: 24px;
  font-weight: 400;
  letter-spacing: -0.025em;
}

.origin-label {
  min-height: 26px;
  padding: 0 8px;
  display: inline-flex;
  align-items: center;
  border-radius: 3px;
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  white-space: nowrap;
}

.origin-measured {
  color: var(--measured);
  background: var(--measured-soft);
}

.origin-derived {
  color: var(--derived);
  background: var(--derived-soft);
}

.contract-row {
  margin: 18px 0;
  padding: 12px 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.contract-row div {
  padding: 0 10px;
  border-right: 1px solid var(--line);
}

.contract-row div:first-child {
  padding-left: 0;
}

.contract-row div:last-child {
  padding-right: 0;
  border-right: 0;
}

.contract-row dd {
  margin: 4px 0 0;
  font-family: var(--mono);
  font-size: 9px;
  white-space: nowrap;
}

.sample-data {
  min-height: 76px;
  padding: 12px 13px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: var(--measured-soft);
  border: 1px solid #cfe1da;
  border-radius: 5px;
}

.sample-data > div {
  min-width: 0;
  display: grid;
}

.sample-data span {
  color: var(--measured);
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.sample-data strong {
  margin-top: 2px;
  font-size: 12px;
}

.sample-data small {
  margin-top: 2px;
  color: var(--ink-soft);
  font-size: 9px;
}

.csv-editor {
  margin-top: 14px;
  border: 1px solid var(--line);
  border-radius: 5px;
  overflow: hidden;
}

.csv-editor summary {
  min-height: 46px;
  padding: 0 13px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  color: var(--ink);
  background: var(--surface-soft);
  cursor: pointer;
  list-style: none;
  font-size: 12px;
  font-weight: 600;
}

.csv-editor summary::-webkit-details-marker {
  display: none;
}

.csv-editor summary::before {
  content: "+";
  color: var(--ink-faint);
  font-family: var(--mono);
  font-weight: 400;
}

.csv-editor[open] summary::before {
  content: "−";
}

.csv-editor summary span {
  margin-right: auto;
}

.csv-editor summary code {
  color: var(--ink-faint);
  font-size: 8px;
  font-weight: 400;
}

#spectrum-input {
  width: 100%;
  height: 196px;
  padding: 13px;
  display: block;
  resize: vertical;
  color: #1f2925;
  background: #fdfdfb;
  border: 0;
  border-top: 1px solid var(--line);
  border-radius: 0;
  outline: none;
  font-family: var(--mono);
  font-size: 10px;
  line-height: 1.6;
  tab-size: 2;
}

#spectrum-input:focus {
  box-shadow: inset 0 0 0 2px var(--derived);
}

#spectrum-input::placeholder {
  color: #a0a7a2;
}

.field-help {
  margin: 0;
  padding: 9px 13px;
  color: var(--ink-faint);
  background: var(--surface-soft);
  border-top: 1px solid var(--line);
  font-size: 9px;
}

.upload-row {
  min-height: 64px;
  margin-top: 10px;
  padding: 9px 10px 9px 13px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  background: var(--surface-soft);
  border: 1px dashed var(--line-dark);
  border-radius: 5px;
  transition: background-color 140ms ease, border-color 140ms ease;
}

.upload-row.is-over {
  background: var(--measured-soft);
  border-color: var(--measured);
}

.upload-row > span {
  display: grid;
}

.upload-row strong {
  font-size: 11px;
}

.upload-row small {
  margin-top: 2px;
  color: var(--ink-faint);
  font-size: 9px;
}

.input-meta {
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 9px;
}

.message {
  margin: 4px 0 14px;
  padding: 11px 12px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  border-radius: 4px;
  font-size: 11px;
}

.message > span {
  width: 18px;
  height: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  border-radius: 50%;
  font-family: var(--mono);
  font-size: 10px;
}

.message p {
  margin: 0;
}

.message-error {
  color: #7c2f25;
  background: var(--failure-soft);
  border: 1px solid #e6c1bb;
}

.message-error > span {
  color: white;
  background: var(--failure);
}

.input-actions {
  padding-top: 13px;
  justify-content: space-between;
  border-top: 1px solid var(--line);
}

.input-actions > span {
  color: var(--ink-faint);
  font-size: 9px;
}

kbd {
  padding: 2px 5px;
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: 3px;
  font-size: 8px;
}

.empty-result {
  min-height: 485px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--ink-soft);
}

.empty-result svg {
  width: min(100%, 470px);
  height: auto;
  margin-bottom: 18px;
}

.empty-result svg line {
  stroke: #e0e3df;
  stroke-width: 1;
}

.empty-result svg path {
  fill: none;
  stroke: #b5c7c0;
  stroke-width: 2;
}

.empty-result svg .placeholder-derived {
  stroke: #c8c3e3;
  stroke-dasharray: 6 6;
}

.empty-result strong {
  color: var(--ink);
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 400;
}

.empty-result p {
  max-width: 320px;
  margin: 6px 0 0;
  font-size: 11px;
}

.metrics {
  margin: 18px 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border: 1px solid var(--line);
  border-radius: 5px;
  overflow: hidden;
}

.metrics div {
  min-width: 0;
  padding: 11px 12px;
  border-right: 1px solid var(--line);
}

.metrics div:last-child {
  border-right: 0;
}

.metrics dd {
  margin: 5px 0 0;
  overflow: hidden;
  color: var(--ink);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.metrics dd.support-central { color: var(--measured); }
.metrics dd.support-tail { color: var(--caution); }
.metrics dd.support-outside { color: var(--failure); }

#result-title:focus {
  outline: 0;
}

.metric-note {
  margin: -10px 0 18px;
  color: var(--ink-faint);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.01em;
}

.chart-heading {
  margin-bottom: 8px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 14px;
}

.chart-heading h4 {
  margin: 0;
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 400;
}

.chart-heading p {
  margin: 2px 0 0;
  color: var(--ink-faint);
  font-size: 9px;
}

.legend {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
  color: var(--ink-faint);
  font-size: 8px;
}

.chart {
  min-height: 260px;
  background: #fdfdfb;
  border: 1px solid var(--line);
  border-radius: 4px;
  overflow: hidden;
}

.chart-pan-cue {
  display: none;
}

.chart svg {
  width: 100%;
  height: auto;
  display: block;
}

.chart-context-region {
  fill: rgba(23, 107, 85, 0.035);
}

.chart-gap-region {
  fill: #f0f1ee;
}

.chart-target-region {
  fill: rgba(103, 88, 201, 0.025);
}

.chart-grid {
  stroke: #e4e7e3;
  stroke-width: 1;
}

.chart-axis-label,
.chart-region-label {
  fill: #737c77;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.04em;
}

.chart-region-label {
  fill: #4f5b56;
  font-size: 10px;
  letter-spacing: 0.08em;
}

.chart-envelope {
  fill: rgba(103, 88, 201, 0.11);
}

.chart-observed,
.chart-derived {
  fill: none;
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.chart-observed {
  stroke: var(--measured);
}

.chart-derived {
  stroke: var(--derived);
  stroke-dasharray: 7 5;
}

.origin-table {
  width: 100%;
  margin-top: 12px;
  border-collapse: collapse;
  font-size: 10px;
}

.origin-table th,
.origin-table td {
  padding: 8px 10px;
  text-align: left;
  border-bottom: 1px solid var(--line);
}

.origin-table th {
  color: var(--ink-faint);
  font-family: var(--mono);
  font-size: 8px;
  font-weight: 400;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.origin-table td:nth-child(2),
.origin-table td:nth-child(3) {
  font-family: var(--mono);
  font-size: 9px;
}

.origin-swatch {
  width: 8px;
  height: 8px;
  margin-right: 7px;
  display: inline-block;
  border-radius: 50%;
}

.origin-swatch.observed { background: var(--measured); }
.origin-swatch.derived { background: var(--derived); }

.warning-box {
  margin-top: 14px;
  padding: 12px 13px;
  color: #5d460e;
  background: var(--caution-soft);
  border: 1px solid #e5d4ad;
  border-radius: 4px;
}

.warning-title {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 10px;
}

.warning-title > span {
  width: 16px;
  height: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: white;
  background: #b37a14;
  border-radius: 50%;
  font-family: var(--mono);
  font-size: 9px;
}

.warning-box ul {
  margin: 8px 0 0;
  padding-left: 17px;
  font-size: 9px;
  line-height: 1.55;
}

.download-row {
  margin-top: 13px;
  padding-top: 13px;
  border-top: 1px solid var(--line);
}

.evidence-intro > p {
  margin: 0 0 2px auto;
  text-align: right;
}

.evidence-table-wrap {
  overflow-x: auto;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.evidence-table {
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
}

.evidence-table th,
.evidence-table td {
  padding: 17px 18px;
  text-align: left;
  border-bottom: 1px solid var(--line);
}

.evidence-table th {
  color: var(--ink-faint);
  background: var(--surface-soft);
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 400;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.evidence-table tbody tr:last-child td {
  border-bottom: 0;
}

.evidence-table td {
  color: var(--ink-soft);
  font-size: 12px;
}

.evidence-table td:first-child strong,
.evidence-table td:first-child span {
  display: block;
}

.evidence-table td:first-child strong {
  color: var(--ink);
  font-family: var(--mono);
  font-size: 11px;
}

.evidence-table td:first-child span {
  margin-top: 2px;
  font-size: 10px;
}

.evidence-table td:nth-child(3) strong {
  color: var(--ink);
  font-family: var(--mono);
  font-size: 11px;
}

.evidence-failure {
  background: rgba(251, 239, 236, 0.45);
}

.decision {
  padding: 4px 7px;
  display: inline-flex;
  border-radius: 3px;
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.decision-pass {
  color: var(--measured);
  background: var(--measured-soft);
}

.decision-fail {
  color: var(--failure);
  background: var(--failure-soft);
}

.table-footnote {
  margin: 10px 0 0;
  color: var(--ink-faint);
  font-size: 10px;
}

.claim-boundary {
  margin-top: 34px;
  padding: 26px;
  display: grid;
  grid-template-columns: minmax(260px, 0.85fr) minmax(0, 1.15fr);
  align-items: start;
  gap: 64px;
  color: #f6f6f2;
  background: var(--ink);
  border-radius: var(--radius);
}

.claim-boundary .section-code {
  color: #8dc5b2;
}

.claim-boundary h3 {
  max-width: 410px;
  margin: 0;
  font-size: 32px;
  line-height: 1.1;
}

.boundary-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.boundary-columns > div {
  padding-left: 14px;
  border-left: 1px solid #48504c;
}

.boundary-columns span {
  color: #9da7a2;
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.boundary-columns p {
  margin: 8px 0 0;
  color: #d1d6d3;
  font-size: 11px;
}

.protocol-steps {
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  list-style: none;
  border-top: 1px solid var(--line-dark);
  border-bottom: 1px solid var(--line-dark);
}

.protocol-steps li {
  min-height: 146px;
  padding: 20px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  border-right: 1px solid var(--line);
}

.protocol-steps li:last-child {
  border-right: 0;
}

.protocol-steps li > span {
  color: var(--measured);
  font-family: var(--mono);
  font-size: 9px;
}

.protocol-steps strong {
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 400;
}

.protocol-steps p {
  margin: 6px 0 0;
  color: var(--ink-soft);
  font-size: 11px;
}

.companion-shell {
  padding: 34px;
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(520px, 1.08fr);
  align-items: start;
  gap: 52px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.companion-copy h2,
.bandtrace-hero h1,
.bandtrace-section h2 {
  margin: 8px 0 0;
  font-family: var(--serif);
  font-weight: 400;
  letter-spacing: -0.04em;
}

.companion-copy h2 {
  max-width: 600px;
  font-size: clamp(34px, 4.4vw, 56px);
  line-height: 1.02;
}

.companion-copy > p:not(.section-code):not(.companion-boundary) {
  max-width: 610px;
  margin: 22px 0 0;
  color: var(--ink-soft);
  font-size: 14px;
}

.companion-actions {
  margin-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.companion-boundary,
.companion-note {
  color: var(--ink-faint);
  font-family: var(--mono);
  font-size: 9px;
  line-height: 1.55;
}

.companion-boundary {
  margin: 20px 0 0;
  padding-left: 12px;
  border-left: 2px solid var(--line-dark);
}

.companion-note {
  margin: 10px 0 0;
}

.axis-summary {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
}

.axis-summary article {
  min-height: 218px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--line);
}

.axis-summary article:last-child {
  border-right: 0;
}

.axis-summary article > span {
  width: 42px;
  height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--measured);
  background: var(--measured-soft);
  border-radius: 50%;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
}

.axis-summary .axis-stop > span {
  color: var(--caution);
  background: var(--caution-soft);
}

.axis-summary strong {
  margin-top: 22px;
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 400;
  line-height: 1.15;
}

.axis-summary p {
  margin: auto 0 0;
  padding-top: 16px;
  color: var(--ink-soft);
  font-size: 10px;
}

.bandtrace-hero {
  min-height: 570px;
  padding: 76px 0 66px;
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(480px, 1.05fr);
  align-items: center;
  gap: 72px;
  border-bottom: 1px solid var(--line);
}

.bandtrace-hero h1 {
  margin-top: 22px;
  font-size: clamp(48px, 5.8vw, 78px);
  line-height: 0.96;
}

.bandtrace-hero h1 em {
  color: var(--derived);
  font-weight: 400;
}

.bandtrace-ledger {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.bandtrace-ledger > div {
  min-height: 132px;
  padding: 22px;
  display: grid;
  grid-template-columns: 50px 1fr;
  column-gap: 17px;
  border-bottom: 1px solid var(--line);
}

.bandtrace-ledger > div:last-child {
  border-bottom: 0;
}

.bandtrace-ledger span {
  width: 48px;
  height: 48px;
  grid-row: 1 / span 2;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--measured);
  background: var(--measured-soft);
  border-radius: 50%;
  font-family: var(--mono);
  font-weight: 700;
}

.bandtrace-ledger .ledger-stop span {
  color: var(--caution);
  background: var(--caution-soft);
}

.bandtrace-ledger strong {
  align-self: end;
  font-family: var(--serif);
  font-size: 21px;
  font-weight: 400;
}

.bandtrace-ledger p {
  max-width: 480px;
  margin: 5px 0 0;
  color: var(--ink-soft);
  font-size: 11px;
}

.bandtrace-section {
  padding: 78px 0;
  border-bottom: 1px solid var(--line);
}

.bandtrace-section .section-intro > p {
  max-width: 360px;
  margin-left: auto;
  text-align: right;
}

.meaning-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.meaning-grid article {
  min-height: 284px;
  padding: 26px;
  border-right: 1px solid var(--line);
}

.meaning-grid article:last-child {
  border-right: 0;
}

.meaning-grid article > span {
  color: var(--measured);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
}

.meaning-grid .meaning-stop > span {
  color: var(--caution);
}

.meaning-grid h3 {
  margin: 42px 0 0;
  font-family: var(--serif);
  font-size: 25px;
  font-weight: 400;
  line-height: 1.12;
}

.meaning-grid p {
  margin: 22px 0 0;
  color: var(--ink-soft);
  font-size: 11px;
}

.meaning-grid code {
  overflow-wrap: anywhere;
  font-size: 9px;
}

.install-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.18fr) minmax(360px, 0.82fr);
  gap: 12px;
}

.command-card,
.download-list {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.command-card {
  padding: 24px;
}

.command-card pre {
  margin: 0;
  padding: 20px;
  overflow-x: auto;
  color: #e8edea;
  background: var(--ink);
  border-radius: 5px;
  font-size: 11px;
  line-height: 1.7;
}

.command-card p {
  margin: 16px 0 0;
  color: var(--ink-soft);
  font-size: 10px;
}

.download-list {
  overflow: hidden;
}

.download-list a {
  min-height: 72px;
  padding: 14px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
}

.download-list a:last-child {
  border-bottom: 0;
}

.download-list a:hover {
  background: var(--surface-soft);
}

.download-list span {
  font-size: 12px;
  font-weight: 650;
}

.download-list code {
  color: var(--ink-faint);
  font-size: 8px;
  text-align: right;
}

.hash-ledger {
  margin-top: 12px;
  padding: 16px 18px;
  background: var(--surface-soft);
  border: 1px solid var(--line);
  border-radius: 5px;
}

.hash-ledger div {
  display: grid;
  grid-template-columns: 130px minmax(0, 1fr);
  gap: 14px;
}

.hash-ledger div + div {
  margin-top: 8px;
}

.hash-ledger span {
  color: var(--ink-faint);
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.hash-ledger code {
  overflow-wrap: anywhere;
  color: var(--ink-soft);
  font-size: 9px;
}

.release-metrics {
  margin: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.release-metrics > div {
  min-height: 176px;
  padding: 22px;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--line);
}

.release-metrics > div:last-child {
  border-right: 0;
}

.release-metrics dt,
.release-metrics span {
  color: var(--ink-faint);
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.release-metrics dd {
  margin: 18px 0;
  font-family: var(--serif);
  font-size: 48px;
  line-height: 1;
}

.release-metrics span {
  margin-top: auto;
  letter-spacing: 0;
  text-transform: none;
}

.static-disclosure {
  margin: 12px 0 0;
  color: var(--ink-faint);
  font-family: var(--mono);
  font-size: 9px;
}

.bandtrace-boundary {
  margin: 78px 0 0;
  padding: 32px;
  display: grid;
  grid-template-columns: minmax(260px, 0.85fr) minmax(0, 1.15fr);
  align-items: start;
  gap: 64px;
  color: #f6f6f2;
  background: var(--ink);
  border-radius: var(--radius);
}

.bandtrace-boundary .section-code {
  color: #8dc5b2;
}

.bandtrace-boundary h2 {
  max-width: 430px;
  margin: 0;
  font-family: var(--serif);
  font-size: 38px;
  font-weight: 400;
  letter-spacing: -0.04em;
  line-height: 1.08;
}

.bandtrace-links {
  padding: 24px 0 78px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
}

.bandtrace-links a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  color: var(--ink-soft);
  font-size: 12px;
}

@media (max-width: 1080px) {
  .site-nav {
    gap: 15px;
  }

  .hero {
    grid-template-columns: minmax(0, 0.85fr) minmax(420px, 1.15fr);
    gap: 38px;
  }

  .hero-facts {
    display: none;
    gap: 7px;
  }

  .hero-facts div {
    display: grid;
    grid-template-columns: 62px 1fr;
    gap: 8px;
  }

  .hero-facts dd {
    margin: 0;
  }

  .example-grid {
    padding-bottom: 8px;
    grid-template-columns: none;
    grid-auto-flow: column;
    grid-auto-columns: minmax(205px, 27vw);
    overflow-x: auto;
    overscroll-behavior-inline: contain;
    scrollbar-width: thin;
  }

  .workspace-grid {
    grid-template-columns: minmax(340px, 0.78fr) minmax(0, 1.22fr);
  }

  .contract-row {
    grid-template-columns: 1fr 1fr;
  }

  .contract-row div:nth-child(2) {
    border-right: 0;
  }

  .contract-row div:nth-child(n + 3) {
    margin-top: 9px;
    padding-top: 9px;
    border-top: 1px solid var(--line);
  }

  .claim-boundary {
    gap: 32px;
  }

  .companion-shell {
    grid-template-columns: 1fr;
  }

  .bandtrace-hero {
    gap: 38px;
  }
}

@media (max-width: 880px) {
  .header-inner,
  main {
    width: min(calc(100% - 32px), var(--page));
  }

  .site-nav a:not(:last-child) {
    display: none;
  }

  .hero {
    min-height: auto;
    padding: 56px 0;
    grid-template-columns: 1fr;
    gap: 42px;
  }

  .bandtrace-hero {
    min-height: auto;
    padding: 56px 0;
    grid-template-columns: 1fr;
  }

  .meaning-grid {
    grid-template-columns: 1fr;
  }

  .meaning-grid article {
    min-height: 220px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .meaning-grid article:last-child {
    border-bottom: 0;
  }

  .install-grid {
    grid-template-columns: 1fr;
  }

  .release-metrics {
    grid-template-columns: 1fr 1fr;
  }

  .release-metrics > div:nth-child(2) {
    border-right: 0;
  }

  .release-metrics > div:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line);
  }

  .bandtrace-boundary {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .hero-copy {
    max-width: 720px;
  }

  .hero-facts {
    grid-template-columns: repeat(3, 1fr);
  }

  .hero-facts div {
    display: block;
  }

  .hero-facts dd {
    margin-top: 5px;
  }

  .hero-figure {
    max-width: 680px;
  }

  .notebook,
  .evidence,
  .protocol,
  .companion {
    padding: 60px 0;
  }

  .workspace-grid {
    grid-template-columns: 1fr;
  }

  .empty-result {
    min-height: 390px;
  }

  .claim-boundary {
    grid-template-columns: 1fr;
  }

  .protocol-steps {
    grid-template-columns: 1fr 1fr;
  }

  .protocol-steps li:nth-child(2) {
    border-right: 0;
  }

  .protocol-steps li:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line);
  }
}

@media (max-width: 600px) {
  body {
    font-size: 14px;
  }

  .header-inner,
  main {
    width: min(calc(100% - 28px), var(--page));
  }

  .header-inner {
    min-height: 62px;
    gap: 10px;
  }

  .brand-copy small,
  .site-nav {
    display: none;
  }

  .local-status {
    margin-left: auto;
    font-size: 8px;
  }

  .hero {
    padding: 38px 0 40px;
    gap: 26px;
  }

  .release-line {
    font-size: 8px;
  }

  .hero h1 {
    margin-top: 18px;
    font-size: clamp(45px, 14vw, 60px);
  }

  .bandtrace-hero h1 {
    font-size: clamp(43px, 13vw, 58px);
  }

  .bandtrace-ledger > div {
    min-height: 148px;
    padding: 18px;
  }

  .bandtrace-section {
    padding: 42px 0;
  }

  .bandtrace-section .section-intro > p {
    margin-left: 0;
    text-align: left;
  }

  .meaning-grid article {
    padding: 22px;
  }

  .command-card {
    padding: 14px;
  }

  .command-card pre {
    padding: 15px;
    font-size: 9px;
  }

  .download-list a {
    align-items: flex-start;
    flex-direction: column;
  }

  .download-list code {
    text-align: left;
  }

  .hash-ledger div {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .release-metrics {
    grid-template-columns: 1fr;
  }

  .release-metrics > div,
  .release-metrics > div:nth-child(2) {
    min-height: 142px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .release-metrics > div:last-child {
    border-bottom: 0;
  }

  .bandtrace-boundary {
    margin-top: 42px;
    padding: 22px;
  }

  .bandtrace-boundary h2 {
    font-size: 30px;
  }

  .abstract {
    font-size: 15px;
  }

  .abstract > span {
    display: block;
    margin-bottom: 5px;
  }

  .hero-actions .button {
    flex: 1 1 auto;
  }

  .hero-figure {
    display: none;
  }

  .hero-facts {
    grid-template-columns: 1fr;
  }

  .hero-facts div {
    display: grid;
    grid-template-columns: 64px 1fr;
    gap: 8px;
  }

  .hero-facts dd {
    margin: 0;
  }

  .hero-figure {
    padding: 12px;
  }

  .hero-figure figcaption strong {
    font-size: 10px;
  }

  .figure-legend {
    gap: 10px;
  }

  .notebook,
  .evidence,
  .protocol,
  .companion {
    padding: 42px 0;
  }

  .companion-shell {
    padding: 22px;
  }

  .companion-actions .button {
    width: 100%;
  }

  .axis-summary {
    grid-template-columns: 1fr;
  }

  .axis-summary article {
    min-height: 160px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .axis-summary article:last-child {
    border-bottom: 0;
  }

  .section-intro {
    gap: 14px;
    margin-bottom: 18px;
    align-items: flex-start;
    flex-direction: column;
  }

  .section-intro h2 {
    font-size: 36px;
  }

  .model-status {
    white-space: normal;
  }

  .example-block {
    margin-inline: -14px;
    padding: 16px 14px;
    border-right: 0;
    border-left: 0;
    border-radius: 0;
  }

  .example-heading {
    display: block;
  }

  .example-heading > span {
    margin-top: 8px;
    display: block;
  }

  .example-grid {
    margin-right: -14px;
    grid-auto-columns: minmax(205px, 76vw);
  }

  .panel {
    padding: 17px;
  }

  .panel-header h3 {
    font-size: 22px;
  }

  .contract-row {
    grid-template-columns: 1fr 1fr;
  }

  .sample-data {
    align-items: stretch;
    flex-direction: column;
  }

  .csv-editor summary code {
    display: none;
  }

  #spectrum-input {
    height: 174px;
  }

  .upload-row {
    align-items: stretch;
    flex-direction: column;
  }

  .button-small {
    min-height: 44px;
  }

  .input-actions .button-wide {
    width: 100%;
  }

  .input-actions > span {
    display: none;
  }

  .empty-result {
    min-height: 320px;
  }

  .metrics {
    grid-template-columns: 1fr;
  }

  .metrics div {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .metrics div:last-child {
    border-bottom: 0;
  }

  .chart-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .legend {
    justify-content: flex-start;
  }

  .chart {
    min-height: 190px;
    overflow-x: auto;
  }

  .chart svg {
    min-width: 610px;
  }

  .chart-pan-cue {
    margin: 6px 0 0;
    display: block;
    color: var(--ink-faint);
    font-family: var(--mono);
    font-size: 9px;
  }

  .origin-table {
    font-size: 9px;
  }

  .origin-table th,
  .origin-table td {
    padding-inline: 6px;
  }

  .download-row .button,
  .download-row .text-button {
    width: 100%;
  }

  .evidence-intro > p {
    margin-left: 0;
    text-align: left;
  }

  .claim-boundary {
    padding: 22px;
  }

  .claim-boundary h3 {
    font-size: 28px;
  }

  .boundary-columns {
    grid-template-columns: 1fr;
  }

  .protocol-steps {
    grid-template-columns: 1fr;
  }

  .protocol-steps li,
  .protocol-steps li:nth-child(2) {
    min-height: 112px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .protocol-steps li:last-child {
    border-bottom: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}