:root {
  color-scheme: dark;
  --cp-bg: #040809;
  --cp-bg-deep: #020405;
  --cp-panel: rgba(7, 21, 25, .92);
  --cp-panel-soft: rgba(10, 30, 34, .62);
  --cp-line: rgba(145, 235, 232, .2);
  --cp-line-strong: rgba(145, 235, 232, .56);
  --cp-text: #effffb;
  --cp-muted: rgba(239, 255, 251, .72);
  --cp-dim: rgba(239, 255, 251, .48);
  --cp-cyan: #91ebe8;
  --cp-cyan-bright: #c7fffb;
  --cp-amber: #ffd179;
  --cp-violet: #c39cff;
  --cp-green: #9bffbf;
  --cp-red: #ff8b92;
  --cp-sand: #ffd179;
  --cp-radius: 6px;
}

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

[hidden] {
  display: none !important;
}

html {
  min-width: 0;
  overflow-x: hidden;
  background: var(--cp-bg);
}

body.chladni-page {
  min-width: 0;
  margin: 0;
  overflow-x: hidden;
  color: var(--cp-text);
  background:
    radial-gradient(circle at 50% -8%, rgba(54, 143, 150, .21), transparent 34rem),
    linear-gradient(rgba(145, 235, 232, .035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(145, 235, 232, .035) 1px, transparent 1px),
    var(--cp-bg-deep);
  background-size: auto, 32px 32px, 32px 32px, auto;
  font-family: "SFMono-Regular", "Cascadia Code", "Roboto Mono", "Noto Sans Mono", "Yu Gothic UI", monospace;
  line-height: 1.55;
}

#chladniApp button,
#chladniApp input,
#chladniApp output,
#chladniApp select {
  font: inherit;
}

#chladniApp button,
#chladniApp input[type="range"] {
  accent-color: var(--cp-cyan);
}

#chladniApp button {
  min-width: 0;
  min-height: 44px;
  padding: 9px 12px;
  border: 1px solid var(--cp-line);
  border-radius: 3px;
  color: var(--cp-text);
  background: rgba(1, 14, 17, .88);
  cursor: pointer;
  letter-spacing: .045em;
  text-align: center;
}

#chladniApp button:hover:not(:disabled) {
  border-color: var(--cp-line-strong);
  background: rgba(24, 71, 73, .48);
}

#chladniApp button:focus-visible,
#chladniApp a:focus-visible,
#chladniApp input:focus-visible,
#chladniApp select:focus-visible,
#chladniCanvas:focus-visible {
  outline: 2px solid var(--cp-amber);
  outline-offset: 3px;
}

#chladniApp button:active:not(:disabled) {
  transform: translateY(1px);
}

#chladniApp button:disabled,
#chladniApp input:disabled,
#chladniApp select:disabled {
  opacity: .48;
  cursor: not-allowed;
}

#chladniApp button.button-primary {
  border-color: rgba(255, 209, 121, .68);
  color: #161007;
  background: var(--cp-amber);
  font-weight: 700;
}

#chladniApp button.button-primary:hover:not(:disabled) {
  border-color: #fff0c4;
  background: #ffe2a6;
}

#chladniApp #playButton[aria-pressed="true"] {
  border-color: rgba(145, 235, 232, .82);
  color: #06131b;
  background: var(--cp-cyan);
  box-shadow: 0 0 0 1px rgba(145, 235, 232, .18);
}

#chladniApp select {
  width: 100%;
  min-height: 44px;
  padding: 9px 12px;
  border: 1px solid var(--cp-line);
  border-radius: 3px;
  color: var(--cp-text);
  background: rgba(1, 14, 17, .88);
}

body.chladni-page > .skip-link {
  position: fixed;
  top: 0;
  left: max(8px, env(safe-area-inset-left));
  z-index: 2147483647;
  padding: 10px 14px;
  border: 2px solid var(--cp-cyan);
  border-radius: 4px;
  color: #f2f1df;
  background: #080907;
  font: 700 .9rem/1.3 "Yu Gothic", "Hiragino Kaku Gothic ProN", Meiryo, system-ui, sans-serif;
  text-decoration: none;
  transform: translateY(-150%);
}

body.chladni-page > .skip-link:focus,
body.chladni-page > .skip-link:focus-visible {
  top: max(8px, env(safe-area-inset-top));
  outline: 3px solid rgba(145, 235, 232, .36);
  outline-offset: 2px;
  transform: translateY(0);
}

#chladniApp.site-frame {
  width: min(1480px, calc(100% - 32px));
  margin: 0 auto;
  padding: 22px 0 42px;
}

#chladniApp .site-header {
  padding: 4px 0 20px;
  border-bottom: 1px solid var(--cp-line);
}

#chladniApp .prototype-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 14px;
  min-width: 0;
  margin: 0;
  color: var(--cp-dim);
  font-size: .78rem;
  line-height: 1.5;
}

#chladniApp .prototype-breadcrumb a,
#chladniApp .section-nav a,
#chladniApp .site-footer a,
#chladniApp .noscript-notice a {
  color: inherit;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: .22em;
}

#chladniApp .prototype-breadcrumb a:hover,
#chladniApp .section-nav a:hover,
#chladniApp .site-footer a:hover,
#chladniApp .noscript-notice a:hover {
  color: var(--cp-cyan-bright);
}

#chladniApp .header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-width: 0;
  margin-top: 18px;
}

#chladniApp .brand {
  display: inline-flex;
  min-width: 0;
  min-height: 44px;
  align-items: center;
  gap: 12px;
  color: var(--cp-text);
  text-decoration: none;
}

#chladniApp .brand-mark {
  display: grid;
  flex: 0 0 auto;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--cp-line-strong);
  color: var(--cp-amber);
  font-size: .78rem;
  letter-spacing: .05em;
  box-shadow: 0 0 20px rgba(145, 235, 232, .12);
}

#chladniApp .brand-copy {
  display: grid;
  gap: 2px;
  min-width: 0;
}

#chladniApp .brand-copy strong {
  overflow-wrap: anywhere;
  font-size: .98rem;
  letter-spacing: .07em;
}

#chladniApp .brand-copy small {
  color: var(--cp-dim);
  font-size: .67rem;
  letter-spacing: .1em;
}

#chladniApp .section-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px 18px;
  color: var(--cp-muted);
  font-size: .75rem;
  letter-spacing: .12em;
}

#chladniApp main {
  min-width: 0;
}

#chladniApp .hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(250px, .45fr);
  align-items: end;
  gap: 28px;
  padding: 44px 0 30px;
}

#chladniApp .kicker {
  margin: 0;
  color: var(--cp-cyan);
  font-size: .68rem;
  letter-spacing: .14em;
  line-height: 1.5;
  text-transform: uppercase;
}

#chladniApp h1,
#chladniApp h2,
#chladniApp h3,
#chladniApp p {
  overflow-wrap: anywhere;
}

#chladniApp h1 {
  max-width: 14ch;
  margin: 9px 0 0;
  color: #f3fffd;
  font-size: clamp(2.25rem, 5vw, 4.8rem);
  font-weight: 700;
  letter-spacing: -.055em;
  line-height: .98;
}

#chladniApp .hero-subtitle {
  margin: 12px 0 0;
  color: var(--cp-muted);
  font-size: .86rem;
  letter-spacing: .12em;
}

#chladniApp .hero-lead {
  display: grid;
  gap: 4px;
  max-width: 760px;
  margin: 20px 0 0;
  color: var(--cp-muted);
  font-size: .86rem;
}

#chladniApp .status-rack {
  display: grid;
  gap: 5px;
  min-width: 0;
  padding: 14px 16px;
  border: 1px solid var(--cp-line);
  border-left: 3px solid var(--cp-cyan);
  background: var(--cp-panel-soft);
}

#chladniApp .status-label {
  color: var(--cp-dim);
  font-size: .65rem;
  letter-spacing: .12em;
}

#chladniApp .status-rack strong {
  color: var(--cp-amber);
  font-size: .82rem;
  letter-spacing: .05em;
}

#chladniApp .status-rack span:last-child {
  color: var(--cp-muted);
  font-size: .72rem;
}

#chladniApp .observatory-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(300px, .75fr);
  align-items: start;
  gap: 18px;
}

#chladniApp .observation-panel,
#chladniApp .control-panel {
  min-width: 0;
  border: 1px solid var(--cp-line);
  background: var(--cp-panel);
}

#chladniApp .observation-panel {
  padding: 16px;
}

#chladniApp .control-panel {
  padding: 16px;
}

#chladniApp .panel-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  min-width: 0;
}

#chladniApp .panel-heading h2 {
  margin: 5px 0 0;
  color: #f3fffd;
  font-size: 1.18rem;
  letter-spacing: -.02em;
  line-height: 1.2;
}

#chladniApp .stage-readout {
  display: grid;
  flex: 0 1 165px;
  gap: 2px;
  min-width: 120px;
  padding: 9px 10px;
  border: 1px solid var(--cp-line);
  color: var(--cp-dim);
  font-size: .62rem;
  letter-spacing: .08em;
  text-align: right;
}

#chladniApp .stage-readout strong {
  color: var(--cp-green);
  font-size: .72rem;
  line-height: 1.3;
}

#chladniApp .stage {
  position: relative;
  min-width: 0;
  margin-top: 14px;
  overflow: hidden;
  border: 1px solid rgba(145, 235, 232, .25);
  background:
    radial-gradient(circle at 50% 50%, rgba(31, 78, 82, .42), transparent 62%),
    #02080b;
}

#chladniApp #chladniCanvas {
  display: block;
  width: 100%;
  height: auto;
  min-width: 0;
  aspect-ratio: 1 / 1;
  cursor: default;
  touch-action: manipulation;
}

#chladniApp .stage-hud {
  position: absolute;
  right: 12px;
  bottom: 10px;
  left: 12px;
  display: flex;
  justify-content: space-between;
  gap: 10px;
  pointer-events: none;
  color: rgba(239, 255, 251, .56);
  font-size: .58rem;
  letter-spacing: .08em;
}

#chladniApp .stage-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-top: 12px;
  color: var(--cp-dim);
  font-size: .67rem;
  letter-spacing: .05em;
}

#chladniApp .stage-legend span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

#chladniApp .legend-swatch {
  display: inline-block;
  width: 16px;
  height: 8px;
  border: 1px solid currentColor;
}

#chladniApp .legend-node {
  color: var(--cp-cyan);
  background: var(--cp-cyan);
}

#chladniApp .legend-crest {
  color: var(--cp-violet);
  background: rgba(195, 156, 255, .48);
}

#chladniApp .legend-sand {
  color: var(--cp-sand);
  background: var(--cp-sand);
}

#chladniApp .legend-plate {
  color: var(--cp-muted);
  background: transparent;
}

#chladniApp .canvas-help {
  margin: 12px 0 0;
  color: var(--cp-dim);
  font-size: .68rem;
}

#chladniApp .canvas-help strong {
  color: var(--cp-amber);
  font-weight: 600;
}

#chladniApp .control-panel {
  display: grid;
  gap: 15px;
}

#chladniApp .compact-heading {
  align-items: center;
}

#chladniApp .panel-index {
  flex: 0 0 auto;
  color: var(--cp-dim);
  font-size: .68rem;
  letter-spacing: .12em;
}

#chladniApp .control-group {
  display: grid;
  gap: 9px;
  min-width: 0;
  padding-top: 14px;
  border-top: 1px solid rgba(145, 235, 232, .12);
}

#chladniApp .control-group h3 {
  margin: 0;
  color: var(--cp-cyan);
  font-size: .68rem;
  font-weight: 600;
  letter-spacing: .13em;
}

#chladniApp .shape-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

#chladniApp .shape-button {
  display: grid;
  gap: 3px;
  align-content: center;
  min-height: 60px;
  text-align: left;
}

#chladniApp .shape-button strong {
  color: var(--cp-muted);
  font-size: .78rem;
}

#chladniApp .shape-button small {
  color: var(--cp-dim);
  font-size: .66rem;
}

#chladniApp .shape-button.is-active {
  border-color: var(--cp-cyan);
  background: rgba(39, 104, 108, .52);
}

#chladniApp .shape-button.is-active strong {
  color: var(--cp-cyan-bright);
}

#chladniApp .range-label {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  color: var(--cp-muted);
  font-size: .74rem;
}

#chladniApp .range-label output {
  color: var(--cp-amber);
  font-variant-numeric: tabular-nums;
  text-align: right;
}

#chladniApp input[type="range"] {
  display: block;
  width: 100%;
  min-height: 30px;
  margin: 0;
}

#chladniApp .range-endpoints {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  color: var(--cp-dim);
  font-size: .6rem;
}

#chladniApp .control-hint {
  margin: 0;
  color: var(--cp-dim);
  font-size: .67rem;
}

#chladniApp .resonance-readout {
  display: grid;
  gap: 8px;
  padding: 11px 12px;
  border: 1px solid rgba(255, 209, 121, .35);
  background: rgba(38, 29, 12, .32);
}

#chladniApp .resonance-readout > div:first-child {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  color: var(--cp-muted);
  font-size: .7rem;
  letter-spacing: .06em;
}

#chladniApp .resonance-readout strong {
  color: var(--cp-amber);
  font-variant-numeric: tabular-nums;
}

#chladniApp .meter {
  height: 7px;
  overflow: hidden;
  border: 1px solid rgba(255, 209, 121, .32);
  background: rgba(255, 209, 121, .08);
}

#chladniApp .meter span {
  display: block;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, var(--cp-violet), var(--cp-cyan), var(--cp-amber));
  transform-origin: left center;
}

#chladniApp .action-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

#chladniApp .readout-list {
  display: grid;
  gap: 0;
  margin: 0;
  border-top: 1px solid rgba(145, 235, 232, .12);
}

#chladniApp .readout-list div {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, auto);
  gap: 12px;
  padding: 8px 0;
  border-bottom: 1px solid rgba(145, 235, 232, .1);
}

#chladniApp .readout-list dt {
  color: var(--cp-dim);
  font-size: .63rem;
  letter-spacing: .06em;
}

#chladniApp .readout-list dd {
  margin: 0;
  color: var(--cp-muted);
  font-size: .7rem;
  font-variant-numeric: tabular-nums;
  text-align: right;
}

#chladniApp .notes {
  display: grid;
  gap: 18px;
  margin-top: 18px;
}

#chladniApp .notes-three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

#chladniApp .notes-two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

#chladniApp .note-card {
  min-width: 0;
  padding: 16px;
  border: 1px solid var(--cp-line);
  background: var(--cp-panel-soft);
}

#chladniApp .note-card h2 {
  margin: 6px 0 0;
  color: #f3fffd;
  font-size: 1.02rem;
  line-height: 1.28;
}

#chladniApp .note-card p {
  margin: 12px 0 0;
  color: var(--cp-muted);
  font-size: .76rem;
}

#chladniApp .note-card ol,
#chladniApp .note-card ul {
  margin: 12px 0 0;
  padding-left: 1.35em;
  color: var(--cp-muted);
  font-size: .76rem;
}

#chladniApp .note-card li + li {
  margin-top: 6px;
}

#chladniApp .note-card strong {
  color: var(--cp-cyan-bright);
  font-weight: 600;
}

#chladniApp .note-emphasis {
  color: var(--cp-amber) !important;
}

#chladniApp .formula {
  display: grid;
  gap: 8px;
  margin-top: 12px;
  padding: 12px;
  border-left: 2px solid var(--cp-cyan);
  background: rgba(2, 12, 18, .68);
}

#chladniApp .formula code {
  overflow-wrap: anywhere;
  color: var(--cp-cyan-bright);
  font-size: .75rem;
}

#chladniApp .small-note {
  color: var(--cp-dim) !important;
  font-size: .67rem !important;
}

#chladniApp .limit-list {
  list-style: "—  ";
}

#chladniApp .fallback,
#chladniApp .noscript-notice {
  margin: 16px 0 0;
  padding: 14px;
  border: 1px solid rgba(255, 139, 146, .58);
  color: #ffd6d1;
  background: rgba(40, 9, 12, .84);
  font-size: .78rem;
}

#chladniApp .noscript-notice p {
  margin: 8px 0 0;
}

#chladniApp .site-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 18px;
  min-width: 0;
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--cp-line);
  color: var(--cp-dim);
  font-size: .68rem;
}

#chladniApp .site-footer > span {
  color: var(--cp-muted);
}

#chladniApp .site-footer > a,
#chladniApp .public-site-footer-nav a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
}

#chladniApp .public-site-footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-left: auto;
}

@media (max-width: 980px) {
  #chladniApp .hero {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  #chladniApp .status-rack {
    max-width: 560px;
  }

  #chladniApp .observatory-layout {
    grid-template-columns: 1fr;
  }

  #chladniApp .notes-three {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  #chladniApp .notes-three .note-card:last-child {
    grid-column: 1 / -1;
  }
}

@media (max-width: 620px) {
  #chladniApp.site-frame {
    width: min(100% - 20px, 1480px);
    padding-top: 14px;
  }

  #chladniApp .header-row {
    align-items: flex-start;
    flex-direction: column;
    gap: 14px;
  }

  #chladniApp .section-nav {
    justify-content: flex-start;
  }

  #chladniApp .hero {
    padding: 30px 0 22px;
  }

  #chladniApp h1 {
    font-size: 2rem;
  }

  #chladniApp .hero-lead {
    font-size: .78rem;
  }

  #chladniApp .observation-panel,
  #chladniApp .control-panel,
  #chladniApp .note-card {
    padding: 13px;
  }

  #chladniApp .panel-heading {
    gap: 10px;
  }

  #chladniApp .stage-readout {
    min-width: 96px;
    max-width: 46%;
    padding: 7px;
  }

  #chladniApp .stage {
    min-height: 0;
  }

  #chladniApp .stage-hud {
    display: grid;
    gap: 2px;
    font-size: .55rem;
  }

  #chladniApp .stage-legend {
    gap: 7px 12px;
    font-size: .61rem;
  }

  #chladniApp .canvas-help {
    font-size: .63rem;
  }

  #chladniApp .notes-three,
  #chladniApp .notes-two {
    grid-template-columns: 1fr;
  }

  #chladniApp .notes-three .note-card:last-child {
    grid-column: auto;
  }

  #chladniApp .notes {
    gap: 12px;
  }

  #chladniApp .readout-list div {
    grid-template-columns: 1fr;
    gap: 3px;
  }

  #chladniApp .readout-list dd {
    text-align: left;
  }

  #chladniApp .range-label {
    align-items: flex-start;
  }

  #chladniApp .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  #chladniApp .public-site-footer-nav {
    margin-left: 0;
  }
}

@media (max-width: 430px) {
  #chladniApp .panel-heading {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
  }

  #chladniApp .stage-readout {
    min-width: 0;
    max-width: 112px;
  }

  #chladniApp .range-label {
    display: grid;
    gap: 3px;
  }

  #chladniApp .range-label output {
    white-space: normal;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
  }

  #chladniApp button:active {
    transform: none;
  }
}