:root {
  color-scheme: light;
  --paper: #e9efe6;
  --paper-bright: #f7f9ef;
  --ink: #092c3b;
  --ink-soft: #335968;
  --deep: #062735;
  --deep-2: #0c3a48;
  --mint: #8bf0c9;
  --lime: #ddff83;
  --violet: #9c91ff;
  --line: rgba(9, 44, 59, .19);
  --line-strong: rgba(9, 44, 59, .42);
  --serif: Georgia, "Times New Roman", serif;
  --sans: "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 0;
  margin: 0;
  overflow-x: clip;
  background:
    linear-gradient(90deg, transparent 0 49.8%, rgba(9, 44, 59, .045) 50%, transparent 50.2%),
    radial-gradient(circle at 12% 8%, rgba(139, 240, 201, .27), transparent 25rem),
    var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.5;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(9, 44, 59, .038) 1px, transparent 1px),
    linear-gradient(90deg, rgba(9, 44, 59, .038) 1px, transparent 1px);
  background-size: 32px 32px;
  content: "";
  pointer-events: none;
  mask-image: linear-gradient(to bottom, #000, transparent 76%);
}

a {
  color: inherit;
}

button,
input {
  font: inherit;
}

button {
  color: inherit;
}

.skip-link {
  position: fixed;
  top: .75rem;
  left: .75rem;
  z-index: 100;
  padding: .7rem 1rem;
  transform: translateY(-150%);
  border: 2px solid var(--deep);
  background: var(--lime);
  color: var(--deep);
  font-family: var(--mono);
  font-size: .78rem;
  font-weight: 700;
  text-decoration: none;
  transition: transform .18s ease;
}

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

:focus-visible {
  outline: 3px solid var(--violet);
  outline-offset: 4px;
}

.site-header {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  width: min(1500px, calc(100% - 3rem));
  min-height: 5rem;
  margin: 0 auto;
  border-bottom: 1px solid var(--line-strong);
  font-family: var(--mono);
  font-size: .69rem;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.wordmark {
  display: inline-flex;
  gap: .65rem;
  align-items: center;
  width: max-content;
  font-weight: 800;
  letter-spacing: .24em;
  text-decoration: none;
}

.wordmark-glyph {
  display: grid;
  width: 1.55rem;
  height: 1.55rem;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  background: var(--deep);
  color: var(--lime);
  font-size: .65rem;
}

.edition,
.authorship {
  margin: 0;
}

.edition span {
  color: var(--ink-soft);
}

.authorship {
  justify-self: end;
  color: var(--ink-soft);
}

main {
  width: min(1500px, calc(100% - 3rem));
  margin: 0 auto;
}

.hero {
  padding: clamp(4rem, 9vw, 8.2rem) 0 clamp(5rem, 10vw, 9rem);
}

.hero-copy {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(16rem, .55fr);
  gap: 1rem clamp(2rem, 7vw, 8rem);
  align-items: end;
  margin-bottom: clamp(3rem, 7vw, 6.5rem);
}

.kicker,
.section-number,
.card-label {
  margin: 0 0 1rem;
  font-family: var(--mono);
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .15em;
  text-transform: uppercase;
}

.kicker {
  grid-column: 1 / -1;
  display: flex;
  gap: .75rem;
  align-items: center;
}

.kicker::before {
  width: 2.5rem;
  height: 1px;
  background: currentColor;
  content: "";
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 12ch;
  margin-bottom: 0;
  font-family: var(--serif);
  font-size: clamp(4.1rem, 9.2vw, 9.2rem);
  font-weight: 400;
  letter-spacing: -.075em;
  line-height: .78;
}

h1 span {
  display: block;
  margin-left: clamp(1rem, 7vw, 7rem);
  color: transparent;
  font-style: italic;
  -webkit-text-stroke: 1.4px var(--ink);
  white-space: nowrap;
}

.lede {
  max-width: 32rem;
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(1.12rem, 1.7vw, 1.55rem);
  line-height: 1.35;
}

.hero-aside {
  grid-column: 2;
  max-width: 30rem;
  margin: 1.25rem 0 0;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: .7rem;
  line-height: 1.7;
}

.portrait-stage {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 19rem;
  gap: 0;
  align-items: stretch;
  border-top: 1px solid var(--line-strong);
  border-bottom: 1px solid var(--line-strong);
}

.chamber {
  min-width: 0;
  margin: 0;
  padding: 1.15rem 1.15rem 1.15rem 0;
  border-right: 1px solid var(--line-strong);
}

.chamber-frame {
  position: relative;
  min-height: min(68vw, 49rem);
  overflow: hidden;
  border-radius: .4rem;
  background:
    linear-gradient(135deg, rgba(139, 240, 201, .07), transparent 40%),
    var(--deep);
  isolation: isolate;
}

.chamber-frame::before,
.chamber-frame::after {
  position: absolute;
  z-index: 3;
  border: 1px solid rgba(221, 255, 131, .38);
  border-radius: 50%;
  content: "";
  pointer-events: none;
}

.chamber-frame::before {
  top: 1.2rem;
  left: 1.2rem;
  width: .55rem;
  height: .55rem;
  box-shadow:
    calc(100vw - 27rem) 0 0 -.05rem rgba(221, 255, 131, .38),
    0 calc(min(68vw, 49rem) - 3rem) 0 -.05rem rgba(221, 255, 131, .38);
}

.chamber-frame::after {
  right: 1.2rem;
  bottom: 1.2rem;
  width: .55rem;
  height: .55rem;
}

#portrait-canvas,
.fallback-art {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
}

#portrait-canvas {
  z-index: 1;
  opacity: 0;
  transition: opacity .8s ease;
}

.canvas-ready #portrait-canvas {
  opacity: 1;
}

.fallback-art {
  z-index: 0;
  padding: clamp(1rem, 5vw, 4rem);
  opacity: .92;
  transition: opacity .5s ease;
}

.canvas-ready .fallback-art {
  opacity: 0;
}

.coordinate,
.depth-scale {
  position: absolute;
  z-index: 4;
  color: rgba(230, 255, 238, .56);
  font-family: var(--mono);
  font-size: .59rem;
  letter-spacing: .13em;
  pointer-events: none;
}

.coordinate-north {
  top: 1rem;
  left: 50%;
  transform: translateX(-50%);
}

.coordinate-east {
  top: 50%;
  right: -1.8rem;
  transform: rotate(90deg);
}

.coordinate-south {
  bottom: 1rem;
  left: 50%;
  transform: translateX(-50%);
}

.depth-scale {
  top: 50%;
  left: 1rem;
  display: flex;
  flex-direction: column;
  gap: .4rem;
  align-items: center;
  transform: translateY(-50%);
}

.depth-scale i {
  width: 1px;
  height: 3.5rem;
  background: rgba(230, 255, 238, .22);
}

figcaption {
  display: grid;
  grid-template-columns: 15rem minmax(0, 1fr);
  gap: 1.5rem;
  padding: 1rem .25rem .1rem;
  color: var(--ink-soft);
  font-size: .83rem;
}

figcaption span {
  color: var(--ink);
  font-family: var(--mono);
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .08em;
}

.instrument {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-width: 0;
  padding: 1.15rem 0 1.15rem 1.15rem;
}

.instrument fieldset {
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
}

.instrument legend {
  width: 100%;
  margin-bottom: 2.75rem;
  padding: .65rem .75rem;
  border: 1px solid var(--line);
  font-family: var(--mono);
  font-size: .67rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.mode-switch {
  display: grid;
  gap: 0;
  margin-bottom: 3.5rem;
  border-top: 1px solid var(--line-strong);
}

.mode-button {
  display: grid;
  grid-template-columns: 2.3rem 1fr;
  gap: .5rem;
  width: 100%;
  padding: 1.1rem .25rem;
  border: 0;
  border-bottom: 1px solid var(--line-strong);
  background: transparent;
  font-family: var(--serif);
  font-size: 1.2rem;
  text-align: left;
  cursor: pointer;
  transition: padding .2s ease, background .2s ease, color .2s ease;
}

.mode-button span {
  padding-top: .25rem;
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: .6rem;
}

.mode-button:hover,
.mode-button.is-active {
  padding-left: .75rem;
  background: var(--deep);
  color: var(--paper-bright);
}

.mode-button.is-active span {
  color: var(--lime);
}

.pressure-label {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: .9rem;
  font-family: var(--mono);
  font-size: .67rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.pressure-label output {
  font-family: var(--serif);
  font-size: 2.2rem;
  font-style: italic;
  font-weight: 400;
}

input[type="range"] {
  width: 100%;
  height: 1.5rem;
  margin: 0;
  accent-color: var(--deep);
  cursor: ew-resize;
}

.control-note {
  margin: .6rem 0 2.2rem;
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: .62rem;
  line-height: 1.6;
}

.pulse-button {
  display: flex;
  justify-content: space-between;
  width: 100%;
  padding: 1rem;
  border: 1px solid var(--deep);
  background: var(--lime);
  font-family: var(--mono);
  font-size: .72rem;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
  cursor: pointer;
  box-shadow: .35rem .35rem 0 var(--deep);
  transition: transform .15s ease, box-shadow .15s ease;
}

.pulse-button:hover {
  transform: translate(.15rem, .15rem);
  box-shadow: .2rem .2rem 0 var(--deep);
}

.pulse-button:active {
  transform: translate(.35rem, .35rem);
  box-shadow: none;
}

.pulse-button span {
  font-size: 1rem;
}

.status {
  min-height: 4.5rem;
  margin: 2rem 0 0;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: .67rem;
  line-height: 1.65;
}

.noscript-note {
  margin: 1rem 0 0;
  padding: 1rem;
  border: 1px solid var(--line-strong);
  background: var(--paper-bright);
  font-family: var(--mono);
  font-size: .75rem;
}

.sequence {
  display: grid;
  grid-template-columns: minmax(17rem, .68fr) minmax(0, 1.32fr);
  gap: clamp(3rem, 8vw, 9rem);
  padding: clamp(5rem, 10vw, 9rem) 0;
}

.section-heading {
  position: sticky;
  top: 2rem;
  align-self: start;
}

.section-heading h2,
.ledger-intro h2 {
  margin-bottom: 1.5rem;
  font-family: var(--serif);
  font-size: clamp(2.7rem, 5vw, 5.2rem);
  font-weight: 400;
  letter-spacing: -.055em;
  line-height: .98;
}

.section-heading > p:last-child,
.ledger-intro > p:last-child {
  max-width: 34rem;
  color: var(--ink-soft);
  font-family: var(--serif);
  font-size: 1.05rem;
}

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

.sequence-list li {
  display: grid;
  grid-template-columns: 2.5rem minmax(0, 1fr) 5.5rem;
  gap: 1.25rem;
  align-items: center;
  min-height: 9.5rem;
  padding: 1.5rem .3rem;
  border-bottom: 1px solid var(--line-strong);
}

.sequence-index {
  align-self: start;
  padding-top: .2rem;
  font-family: var(--mono);
  font-size: .68rem;
  font-weight: 700;
}

.sequence-list h3 {
  margin-bottom: .45rem;
  font-family: var(--serif);
  font-size: clamp(1.45rem, 2.2vw, 2.15rem);
  font-weight: 400;
  letter-spacing: -.025em;
}

.sequence-list p {
  max-width: 38rem;
  margin-bottom: 0;
  color: var(--ink-soft);
  font-size: .9rem;
}

.sequence-mark {
  position: relative;
  justify-self: end;
  width: 4.2rem;
  height: 4.2rem;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
}

.sequence-mark::before,
.sequence-mark::after {
  position: absolute;
  inset: 50% auto auto 50%;
  background: var(--ink);
  content: "";
  transform: translate(-50%, -50%);
}

.sequence-mark::before {
  width: 1px;
  height: 5.3rem;
}

.sequence-mark::after {
  width: 5.3rem;
  height: 1px;
}

.sequence-list li:nth-child(2) .sequence-mark {
  border-radius: 42% 58% 35% 65%;
  transform: rotate(18deg);
}

.sequence-list li:nth-child(3) .sequence-mark {
  border-color: var(--violet);
  box-shadow: inset 0 0 0 .75rem var(--paper), inset 0 0 0 .8rem var(--violet);
}

.sequence-list li:nth-child(4) .sequence-mark {
  border-radius: 50% 50% 8% 50%;
  background: var(--lime);
}

.ledger {
  padding: clamp(5rem, 9vw, 8rem) 0;
  border-top: 1px solid var(--line-strong);
}

.ledger-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  column-gap: clamp(3rem, 8vw, 9rem);
  margin-bottom: 4rem;
}

.ledger-intro .section-number {
  grid-column: 1 / -1;
}

.ledger-intro h2 {
  margin-bottom: 0;
}

.ledger-intro > p:last-child {
  align-self: end;
  margin-bottom: .5rem;
}

.ledger-grid {
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  gap: 1rem;
}

.provenance-card,
.catalog-card {
  min-width: 0;
  padding: clamp(1.5rem, 3vw, 3rem);
  border: 1px solid var(--line-strong);
}

.provenance-card {
  background: var(--deep);
  color: var(--paper-bright);
}

.provenance-card .card-label {
  color: var(--mint);
}

.provenance-card h3 {
  max-width: 12ch;
  margin: 2.5rem 0;
  font-family: var(--serif);
  font-size: clamp(2.5rem, 4vw, 4.3rem);
  font-style: italic;
  font-weight: 400;
  letter-spacing: -.05em;
  line-height: .95;
}

.provenance-card p:not(.card-label) {
  max-width: 39rem;
  color: rgba(247, 249, 239, .72);
  font-size: .9rem;
}

.provenance-card strong,
.provenance-card code {
  color: var(--lime);
}

.provenance-card code {
  font-family: var(--mono);
}

.catalog-card {
  background: rgba(247, 249, 239, .55);
}

.catalog-card dl {
  margin: 2.5rem 0;
  border-top: 1px solid var(--line-strong);
}

.catalog-card dl div {
  display: grid;
  grid-template-columns: minmax(8rem, .7fr) minmax(0, 1.3fr);
  gap: 1rem;
  padding: 1.4rem 0;
  border-bottom: 1px solid var(--line-strong);
}

.catalog-card dt {
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: .65rem;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.catalog-card dd {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(1.25rem, 2vw, 1.8rem);
  line-height: 1.1;
}

.catalog-caveat {
  max-width: 46rem;
  margin-bottom: 0;
  color: var(--ink-soft);
  font-size: .78rem;
}

.site-footer {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 1rem;
  align-items: center;
  width: min(1500px, calc(100% - 3rem));
  min-height: 6rem;
  margin: 0 auto;
  border-top: 1px solid var(--line-strong);
  font-family: var(--mono);
  font-size: .62rem;
  letter-spacing: .05em;
  text-transform: uppercase;
}

.site-footer p {
  margin: 0;
}

.site-footer p:nth-child(2) {
  text-align: center;
}

.site-footer p:last-child {
  text-align: right;
}

.not-found-page {
  display: grid;
  min-height: 100vh;
  place-items: center;
  padding: 1.5rem;
}

.not-found {
  width: min(44rem, 100%);
  padding: clamp(2rem, 8vw, 5rem);
  border: 1px solid var(--line-strong);
  background:
    radial-gradient(circle at 75% 20%, rgba(139, 240, 201, .5), transparent 13rem),
    var(--paper-bright);
  box-shadow: .75rem .75rem 0 var(--deep);
}

.not-found-code {
  margin-bottom: 4rem;
  font-family: var(--serif);
  font-size: clamp(6rem, 24vw, 12rem);
  font-style: italic;
  letter-spacing: -.1em;
  line-height: .6;
}

.not-found h1 {
  max-width: 10ch;
  margin-bottom: 1.5rem;
  font-size: clamp(2.5rem, 8vw, 4.5rem);
  line-height: .9;
}

.not-found p {
  max-width: 34rem;
  color: var(--ink-soft);
}

.home-link {
  display: inline-block;
  margin-top: 1rem;
  padding: .8rem 1rem;
  border: 1px solid var(--deep);
  background: var(--lime);
  font-family: var(--mono);
  font-size: .72rem;
  font-weight: 800;
  letter-spacing: .08em;
  text-decoration: none;
  text-transform: uppercase;
  box-shadow: .3rem .3rem 0 var(--deep);
}

@media (max-width: 900px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .edition {
    display: none;
  }

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

  .kicker,
  .hero-aside {
    grid-column: 1;
  }

  h1 span {
    margin-left: 0;
  }

  .portrait-stage {
    grid-template-columns: 1fr;
  }

  .chamber {
    padding-right: 0;
    border-right: 0;
    border-bottom: 1px solid var(--line-strong);
  }

  .chamber-frame {
    min-height: 72vw;
  }

  .instrument {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 15rem;
    gap: 2rem;
    padding-left: 0;
  }

  .status {
    align-self: end;
  }

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

  .mode-button {
    grid-template-columns: 1fr;
  }

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

  .section-heading {
    position: static;
  }

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

@media (max-width: 640px) {
  .site-header,
  main,
  .site-footer {
    width: min(100% - 1.5rem, 1500px);
  }

  .site-header {
    min-height: 4.25rem;
  }

  .authorship {
    max-width: 10rem;
    text-align: right;
  }

  .hero {
    padding-top: 3.5rem;
  }

  h1 {
    font-size: clamp(3.45rem, 18vw, 5.4rem);
    line-height: .85;
  }

  h1 span {
    white-space: normal;
  }

  .chamber-frame {
    min-height: 110vw;
  }

  figcaption {
    grid-template-columns: 1fr;
    gap: .45rem;
  }

  .instrument {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .mode-button {
    padding-right: .55rem;
    padding-left: .55rem;
    font-size: 1rem;
  }

  .mode-button:hover,
  .mode-button.is-active {
    padding-left: .55rem;
  }

  .status {
    min-height: 0;
  }

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

  .ledger-intro h2 {
    margin-bottom: 1.5rem;
  }

  .site-footer {
    grid-template-columns: 1fr;
    padding: 1.5rem 0;
  }

  .site-footer p:nth-child(2),
  .site-footer p:last-child {
    text-align: left;
  }
}

@media (max-width: 480px) {
  body {
    font-size: 15px;
  }

  body::before {
    background-size: 24px 24px;
  }

  .hero-copy {
    margin-bottom: 2.5rem;
  }

  .chamber {
    padding-top: .75rem;
    padding-bottom: .75rem;
  }

  .chamber-frame {
    min-height: 28rem;
  }

  .coordinate-east,
  .depth-scale {
    display: none;
  }

  .instrument legend {
    margin-bottom: 1.5rem;
  }

  .mode-switch {
    margin-bottom: 2.5rem;
  }

  .sequence-list li {
    grid-template-columns: 1.5rem minmax(0, 1fr);
    min-height: 8rem;
  }

  .sequence-mark {
    display: none;
  }

  .catalog-card dl div {
    grid-template-columns: 1fr;
    gap: .35rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}