@charset "UTF-8";
:root {
  --paper: #faf5ec;
  --paper-deep: #f1e8d9;
  --ink: #1a1612;
  --muted: #655b4b;
  --rule: #d9cbb5;
  --accent: #a83e23;
  --accent-soft: #d4502e;
  --night: #211e19;
  --light: #faf5ec;
  --serif: Georgia, 'Times New Roman', serif;
  --sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --mono: ui-monospace, SFMono-Regular, Consolas, monospace;
  --width: 1160px;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 24px;
}
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 16px/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
}
button,
input,
select {
  font: inherit;
}
button,
a,
input,
select,
summary {
  -webkit-tap-highlight-color: transparent;
}
a {
  color: inherit;
}
button {
  cursor: pointer;
}
img,
svg {
  max-width: 100%;
  display: block;
}
button:disabled {
  cursor: default;
}
::selection {
  background: #ebc7ad;
  color: var(--ink);
}
[hidden] {
  display: none !important;
}
.wrap {
  width: min(var(--width), calc(100% - 96px));
  margin-inline: auto;
}
.section {
  padding-block: 94px;
}
.eyebrow {
  font: 11px/1.5 var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.13em;
  margin: 0 0 25px;
  color: var(--muted);
}
.hairline {
  display: inline-block;
  width: 32px;
  height: 1px;
  background: var(--rule);
  vertical-align: middle;
  margin: 0 10px;
}
h1,
h2,
h3,
p {
  margin-top: 0;
}
h1,
h2,
h3 {
  font-family: var(--serif);
  font-weight: 400;
}
h1 em,
h2 em {
  font-weight: 400;
  color: var(--accent);
}
h2 {
  font-size: clamp(36px, 4.4vw, 54px);
  line-height: 1.12;
  letter-spacing: -0.045em;
  margin-bottom: 22px;
}
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 5px;
}
.skip-link {
  position: fixed;
  z-index: 20;
  top: 10px;
  left: 10px;
  transform: translateY(-180%);
  background: var(--ink);
  color: var(--paper);
  padding: 12px 20px;
}
.skip-link:focus {
  transform: none;
}
.sr-only {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.site-header {
  min-height: 92px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--rule);
  gap: 32px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 17px;
  text-decoration: none;
  white-space: nowrap;
}
.brand em {
  font-family: var(--serif);
  font-size: 22px;
}
.brand-divider {
  color: var(--muted);
  padding: 0 7px;
}
.site-header nav {
  display: flex;
  gap: 30px;
  align-items: center;
}
.site-header nav a {
  font-size: 12px;
  text-decoration: none;
  padding-block: 15px;
  border-bottom: 1px solid transparent;
}
.site-header nav a:hover {
  border-color: var(--accent);
}
.hero {
  display: grid;
  grid-template-columns: 1.13fr 1fr;
  gap: 45px;
  align-items: center;
  padding-block: 95px 78px;
  min-height: 620px;
}
.hero h1 {
  font-size: clamp(50px, 5.7vw, 76px);
  line-height: 1.055;
  letter-spacing: -0.06em;
  margin-bottom: 32px;
}
.hero-lede {
  font-size: 18px;
  line-height: 1.65;
  max-width: 39ch;
  margin-bottom: 19px;
}
.hero-quiet {
  font-family: var(--serif);
  font-size: 18px;
  font-style: italic;
  color: var(--muted);
  margin-bottom: 36px;
}
.hero-actions {
  display: flex;
  align-items: center;
  gap: 23px;
  flex-wrap: wrap;
}
.button {
  border: 1px solid var(--ink);
  padding: 14px 21px;
  min-height: 50px;
  display: inline-flex;
  gap: 22px;
  align-items: center;
  font-size: 12px;
  letter-spacing: 0.015em;
  background: transparent;
}
.button.primary {
  background: var(--ink);
  color: var(--paper);
}
.button.primary:hover:not(:disabled) {
  background: var(--accent);
  border-color: var(--accent);
}
.button:disabled {
  opacity: 0.55;
}
.text-link {
  font-size: 12px;
  text-underline-offset: 5px;
  text-decoration-thickness: 1px;
}
.text-link:hover {
  color: var(--accent);
}
.score {
  margin: 0;
  align-self: center;
  padding-top: 16px;
}
.score svg {
  width: 100%;
  overflow: visible;
}
.score-guides path {
  stroke: var(--rule);
  stroke-width: 0.6;
  fill: none;
  opacity: 0.45;
}
.score-lines path {
  stroke: #c7b49c;
  fill: none;
  stroke-width: 1.2;
  transition:
    stroke 0.45s ease,
    opacity 0.45s ease;
}
.score-lines path.is-active {
  stroke: var(--accent);
  stroke-width: 1.55;
}
.score-node circle {
  fill: #b19e87;
  transition: fill 0.3s ease;
}
.score-node .node-ring {
  fill: none;
  stroke: #b19e87;
  stroke-width: 1;
  opacity: 0.45;
}
.score-node.is-active circle {
  fill: var(--accent);
}
.score-node.is-active .node-ring {
  fill: none;
  stroke: var(--accent);
  opacity: 1;
}
.score-node text {
  font-family: var(--serif);
  font-size: 15px;
  fill: var(--muted);
}
.score-node.is-active text {
  fill: var(--ink);
}
.score-center path {
  stroke: var(--ink);
  fill: none;
  stroke-width: 0.7;
}
.score-center text {
  font: 9px var(--mono);
  letter-spacing: 0.06em;
  fill: var(--muted);
}
.score figcaption {
  text-align: center;
  margin-top: 15px;
  font: 16px/1.5 var(--serif);
  color: var(--muted);
}
.score figcaption em {
  color: var(--ink);
}
.motif-strip {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  border-block: 1px solid var(--rule);
  padding-block: 19px;
  font: 13px var(--serif);
  letter-spacing: 0.025em;
}
.motif-strip i {
  color: var(--accent);
  font-style: normal;
}
.section-heading {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 50px;
  margin-bottom: 48px;
}
.section-heading h2 {
  margin-bottom: 0;
}
.section-aside {
  color: var(--muted);
  font-size: 13px;
  max-width: 29ch;
  margin-bottom: 5px;
}
.study-layout {
  display: grid;
  grid-template-columns: 270px minmax(0, 1fr);
  gap: 60px;
}
.study-index a {
  display: grid;
  grid-template-columns: 20px 1fr 16px;
  gap: 12px;
  align-items: start;
  border-top: 1px solid var(--rule);
  padding: 24px 6px 25px 0;
  min-height: 86px;
  text-decoration: none;
}
.study-index a:last-of-type {
  border-bottom: 1px solid var(--rule);
}
.index-number {
  font: 10px var(--mono);
  color: var(--muted);
  margin-top: 6px;
}
.study-index strong {
  font: 19px/1.25 var(--serif);
  display: block;
  font-weight: 400;
}
.study-index small {
  display: block;
  font-size: 10px;
  color: var(--muted);
  margin-top: 9px;
  letter-spacing: 0.01em;
}
.index-arrow {
  font-size: 16px;
  color: var(--muted);
  transition: transform 0.2s ease;
}
.study-index a:hover .index-arrow {
  transform: translate(2px, -2px);
}
.study-index a[aria-current='true'] {
  color: var(--accent);
  border-top-color: var(--accent);
}
.study-index a[aria-current='true'] .index-number,
.study-index a[aria-current='true'] .index-arrow {
  color: var(--accent);
}
.index-footnote {
  font: italic 15px/1.6 var(--serif);
  color: var(--muted);
  margin-top: 30px;
}
.study-stage {
  min-width: 0;
}
.study-panel {
  scroll-margin-top: 30px;
}
.study-panel + .study-panel {
  margin-top: 70px;
}
.is-interactive .study-panel + .study-panel {
  margin-top: 0;
}
.study-motifs {
  color: var(--accent);
  font: 10px/1.6 var(--mono);
  letter-spacing: 0.07em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.study-panel h3 {
  font-size: clamp(30px, 3vw, 38px);
  letter-spacing: -0.035em;
  line-height: 1.15;
  margin-bottom: 18px;
}
.study-intro {
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
  max-width: 61ch;
  margin-bottom: 29px;
}
.script-note {
  border: 1px solid var(--rule);
  padding: 14px 18px;
  font-size: 13px;
  color: var(--muted);
}
.is-interactive .script-note {
  display: none;
}
.experiment {
  border: 1px solid var(--rule);
  background: #fffaf2;
  min-width: 0;
}
.controls {
  margin: 0;
  padding: 25px 29px 26px;
  border: 0;
  border-bottom: 1px solid var(--rule);
  display: grid;
  gap: 16px;
  min-width: 0;
}
.controls legend {
  float: left;
  width: 100%;
  margin-bottom: 18px;
  padding: 0;
  color: var(--muted);
  font: 10px/1.3 var(--mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.controls label {
  display: grid;
  gap: 8px;
  font-size: 12px;
}
select {
  appearance: auto;
  border: 1px solid #bba98f;
  background: #fffdf7;
  color: var(--ink);
  padding: 10px 12px;
  min-height: 44px;
  border-radius: 0;
  width: 100%;
  font-size: 14px;
}
select:disabled,
input:disabled {
  opacity: 0.55;
}
.range-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 2px;
  gap: 10px;
}
.range-label output {
  font: 12px var(--mono);
  color: var(--accent);
}
input[type='range'] {
  accent-color: var(--accent);
  width: 100%;
  min-height: 44px;
  margin: 0;
  cursor: pointer;
}
.range-ends {
  display: flex;
  justify-content: space-between;
  font: 10px var(--mono);
  color: var(--muted);
  margin-top: -9px;
}
.observation-reading {
  padding: 31px 29px 27px;
  min-height: 181px;
}
.reading-label {
  display: block;
  font: 10px var(--mono);
  color: var(--muted);
  letter-spacing: 0.07em;
  text-transform: uppercase;
}
.reading-word {
  font: italic clamp(32px, 4vw, 46px)/1.2 var(--serif);
  letter-spacing: -0.045em;
  color: var(--accent);
  margin: 11px 0 10px;
}
.observation-reading > p:last-child,
.door-reading p:last-child {
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 0;
}
.view-controls {
  display: flex;
  align-items: center;
  gap: 3px;
  padding: 0 20px;
  border-block: 1px solid var(--rule);
}
.view-controls button {
  border: 0;
  border-bottom: 2px solid transparent;
  background: none;
  padding: 12px 11px;
  min-height: 44px;
  color: var(--muted);
  font-size: 11px;
}
.view-controls button[aria-pressed='true'] {
  color: var(--ink);
  border-color: var(--accent);
}
.view-controls > span {
  font: italic 13px var(--serif);
  color: var(--muted);
  margin-left: auto;
  padding-left: 10px;
}
.rendered-reading {
  margin: 0;
  padding: 22px 29px;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  font: 16px/1.7 var(--serif);
  min-height: 104px;
}
.rendered-reading[data-surface='data'] {
  font: 12px/1.8 var(--mono);
  min-height: 170px;
}
.experiment-note {
  margin: 0;
  padding: 17px 29px 20px;
  font-size: 11px;
  line-height: 1.65;
  color: var(--muted);
  border-top: 1px solid var(--rule);
}
.study-afterword {
  font: italic 19px/1.55 var(--serif);
  margin: 23px 0 0;
  color: var(--muted);
}
.door-reading {
  display: grid;
  grid-template-columns: 70px 1fr;
  align-items: center;
  gap: 23px;
  padding: 32px 29px;
}
.door-mark {
  width: 60px;
  height: 87px;
  border: 1px solid var(--accent);
  border-bottom: 0;
  position: relative;
}
.door-mark:after {
  content: '';
  width: 77px;
  height: 1px;
  background: var(--accent);
  position: absolute;
  bottom: 0;
  left: -9px;
}
.door-mark span {
  position: absolute;
  inset: 8px 8px 0;
  border: 1px solid var(--rule);
  border-bottom: 0;
}
.door-mark span:after {
  content: '';
  height: 3px;
  width: 3px;
  border-radius: 50%;
  position: absolute;
  background: var(--accent);
  right: 7px;
  top: 38px;
}
.door-reading .reading-word {
  font-size: 38px;
}
.boundary-record {
  margin: 0;
  padding: 0 29px 24px;
}
.boundary-record > div {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 18px;
  border-top: 1px solid var(--rule);
  padding-block: 14px;
}
.boundary-record dt {
  font: 10px/1.7 var(--mono);
  color: var(--muted);
}
.boundary-record dd {
  font-size: 13px;
  line-height: 1.65;
  margin: 0;
  overflow-wrap: anywhere;
}
.boundary-record dd.is-unstated {
  font-style: italic;
  color: var(--muted);
}
.fork-controls {
  grid-template-columns: 1fr 1fr;
  align-items: end;
}
.fork-controls legend {
  grid-column: 1/-1;
}
.check-label {
  display: flex !important;
  align-items: center;
  gap: 10px !important;
  min-height: 44px;
  padding: 8px 0;
}
.check-label input {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
}
.branch-figure {
  width: 100%;
  padding: 24px 24px 0;
  overflow: visible;
}
.branch-paths path {
  stroke: #b79c7e;
  fill: none;
  stroke-width: 1.3;
}
.branch-parent circle {
  fill: var(--ink);
}
.branch-leaf circle {
  fill: var(--accent);
}
.branch-figure text {
  font: 11px var(--serif);
  fill: var(--muted);
}
.fork-reading {
  padding: 12px 29px 26px;
}
.fork-statement {
  font: italic 30px/1.25 var(--serif);
  letter-spacing: -0.035em;
  margin-bottom: 11px;
}
.fork-reading > p:nth-child(2) {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 13px;
}
.scope-note {
  font: 10px var(--mono);
  color: var(--muted);
}
.record-details {
  border-top: 1px solid var(--rule);
}
.record-details summary {
  font-size: 11px;
  cursor: pointer;
  padding: 16px 29px;
  min-height: 48px;
}
.record-details pre {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  font: 11px/1.7 var(--mono);
  padding: 0 29px 23px;
  margin: 0;
}
.practice {
  border-top: 1px solid var(--rule);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 100px;
}
.practice-intro > p:not(.eyebrow) {
  font: 19px/1.7 var(--serif);
  color: var(--muted);
}
.practice-intro .practice-small {
  font: 12px/1.8 var(--sans) !important;
  max-width: 42ch;
  margin-top: 33px;
}
.principles {
  margin: 5px 0 0;
}
.principles > div {
  display: grid;
  grid-template-columns: 115px 1fr;
  gap: 23px;
  border-top: 1px solid var(--rule);
  padding-block: 21px;
}
.principles dt {
  font: 19px/1.35 var(--serif);
}
.principles dd {
  font-size: 13px;
  color: var(--muted);
  margin: 0;
}
.entrances {
  background: var(--night);
  color: var(--light);
}
.entrances-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 100px;
  padding-block: 76px;
}
.entrances .eyebrow {
  color: #cec0a8;
}
.entrances h2 {
  font-size: 46px;
}
.entrances h2 em {
  color: #e1ad88;
}
.entrances-inner > div > p:last-child {
  color: #d4c8b5;
  font-size: 13px;
  line-height: 1.85;
  margin-bottom: 0;
}
.entrance-links a {
  border-top: 1px solid #625646;
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-decoration: none;
  padding: 15px 0;
  min-height: 79px;
  font: 22px/1.3 var(--serif);
}
.entrance-links a:last-child {
  border-bottom: 1px solid #625646;
}
.entrance-links small {
  display: block;
  font: 9px var(--mono);
  color: #cec0a8;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  margin-bottom: 5px;
}
.entrance-links a > span:nth-child(2) {
  color: #e1ad88;
  font-family: var(--sans);
  transition: transform 0.2s ease;
}
.entrance-links a:hover > span:nth-child(2) {
  transform: translate(3px, -3px);
}
.entrances a:focus-visible {
  outline-color: #e1ad88;
}
.site-footer {
  display: grid;
  grid-template-columns: 1fr 1.3fr auto;
  gap: 35px;
  padding-block: 32px;
  color: var(--muted);
  font-size: 10px;
  line-height: 1.7;
  align-items: start;
}
.site-footer p {
  margin: 0;
}
.site-footer p:first-child {
  font: 13px var(--serif);
}
.site-footer p:first-child span {
  margin-inline: 8px;
}
.site-footer a {
  font-size: 10px;
  text-underline-offset: 4px;
  padding-block: 4px;
}
@media (min-width: 1100px) {
  .study-index {
    align-self: start;
    position: sticky;
    top: 30px;
  }
}
@media (max-width: 1000px) {
  .wrap {
    width: calc(100% - 64px);
  }
  .hero {
    gap: 20px;
    padding-block: 72px 62px;
    min-height: 0;
  }
  .hero h1 {
    font-size: 57px;
  }
  .hero-lede {
    font-size: 16px;
  }
  .hero-actions {
    gap: 18px;
  }
  .score-node text {
    font-size: 16px;
  }
  .study-layout {
    grid-template-columns: 225px minmax(0, 1fr);
    gap: 35px;
  }
  .practice,
  .entrances-inner {
    gap: 60px;
  }
  .view-controls > span {
    font-size: 11px;
  }
  .principles > div {
    grid-template-columns: 100px 1fr;
    gap: 15px;
  }
}
@media (max-width: 760px) {
  .wrap {
    width: calc(100% - 40px);
  }
  .site-header {
    min-height: 78px;
    gap: 15px;
  }
  .brand {
    font-size: 14px;
    gap: 8px;
  }
  .brand em {
    font-size: 18px;
  }
  .brand img {
    width: 23px;
  }
  .site-header nav {
    gap: 18px;
  }
  .site-header nav a {
    font-size: 11px;
  }
  .site-header nav a:nth-child(n + 2) {
    display: none;
  }
  .site-header nav a {
    white-space: nowrap;
  }
  .hero {
    grid-template-columns: 1fr;
    padding-block: 56px 39px;
    gap: 23px;
  }
  .hero h1 {
    font-size: clamp(48px, 9vw, 65px);
    max-width: 13ch;
    margin-bottom: 25px;
  }
  .hero-lede {
    font-size: 16px;
  }
  .hero-quiet {
    margin-bottom: 26px;
  }
  .hero .eyebrow {
    font-size: 9px;
  }
  .score {
    width: min(440px, 100%);
    justify-self: center;
    padding: 0;
    margin-top: 6px;
  }
  .score figcaption {
    font-size: 14px;
    margin-top: 0;
  }
  .score svg {
    max-height: 300px;
  }
  .motif-strip {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 10px 0;
    text-align: center;
    font-size: 12px;
    padding-block: 17px;
  }
  .motif-strip i {
    display: none;
  }
  .motif-strip span {
    grid-column: span 2;
  }
  .motif-strip span:nth-of-type(4) {
    grid-column: 2 / span 2;
  }
  .motif-strip span:nth-of-type(5) {
    grid-column: 4 / span 2;
  }
  .section {
    padding-block: 57px;
  }
  .section-heading {
    display: block;
    margin-bottom: 30px;
  }
  .section-heading h2 {
    font-size: 38px;
  }
  .section-aside {
    max-width: 45ch;
    margin-top: 24px;
    font-size: 12px;
  }
  .study-layout {
    grid-template-columns: 1fr;
    gap: 31px;
  }
  .study-index {
    display: block;
  }
  .study-index a {
    grid-template-columns: 22px 1fr 16px;
    align-items: center;
    padding: 17px 0;
    min-height: 66px;
  }
  .study-index strong {
    font-size: 18px;
  }
  .study-index small {
    margin-top: 3px;
  }
  .index-number {
    margin-top: 0;
  }
  .index-footnote {
    display: none;
  }
  .study-panel h3 {
    font-size: 32px;
  }
  .study-intro {
    font-size: 14px;
  }
  .study-motifs {
    font-size: 9px;
  }
  .controls {
    padding: 23px 21px;
  }
  .observation-reading {
    padding: 25px 21px;
    min-height: 170px;
  }
  .rendered-reading {
    padding: 20px 21px;
    font-size: 15px;
  }
  .view-controls {
    padding-inline: 12px;
  }
  .view-controls button {
    padding-inline: 9px;
  }
  .view-controls > span {
    font-size: 11px;
  }
  .experiment-note {
    padding: 15px 21px 18px;
  }
  .door-reading {
    padding: 29px 21px;
    gap: 16px;
    grid-template-columns: 65px 1fr;
  }
  .door-reading .reading-word {
    font-size: 33px;
  }
  .boundary-record {
    padding-inline: 21px;
  }
  .boundary-record > div {
    grid-template-columns: 82px 1fr;
    gap: 12px;
  }
  .branch-figure {
    padding: 20px 8px 0;
  }
  .fork-reading {
    padding: 13px 21px 23px;
  }
  .fork-statement {
    font-size: 27px;
  }
  .record-details summary {
    padding-inline: 21px;
  }
  .record-details pre {
    padding-inline: 21px;
  }
  .practice {
    grid-template-columns: 1fr;
    gap: 28px;
  }
  .practice-intro .practice-small {
    max-width: 48ch;
  }
  .principles > div {
    grid-template-columns: 112px 1fr;
    padding-block: 17px;
  }
  .entrances-inner {
    grid-template-columns: 1fr;
    gap: 28px;
    padding-block: 55px;
  }
  .entrances h2 {
    font-size: 39px;
  }
  .entrance-links a {
    min-height: 76px;
  }
  .site-footer {
    grid-template-columns: 1fr;
    gap: 14px;
    padding-block: 28px;
  }
  .site-footer a {
    justify-self: start;
    min-height: 44px;
  }
}
@media (max-width: 380px) {
  .site-header nav a:last-child {
    display: none;
  }
  .hero h1 {
    font-size: 46px;
  }
  .hero-actions {
    gap: 17px;
  }
  .view-controls > span {
    max-width: 90px;
    text-align: right;
    line-height: 1.3;
  }
  .desktop-break {
    display: none;
  }
  .motif-strip {
    gap: 7px 9px;
  }
  .door-reading .reading-word {
    font-size: 29px;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}
@media (forced-colors: active) {
  .experiment,
  .controls,
  .motif-strip,
  .study-index a,
  .principles > div,
  .entrance-links a {
    border-color: CanvasText;
  }
  .score-lines path,
  .branch-paths path,
  .score-center path {
    stroke: CanvasText;
  }
  .score-node circle,
  .branch-leaf circle,
  .branch-parent circle {
    fill: CanvasText;
  }
  .score-node text,
  .branch-figure text {
    fill: CanvasText;
  }
}