:root {
  color-scheme: dark;
  --void: #000000;
  --amber: #ffb300;
  --amber-dim: rgba(255, 179, 0, 0.2);
  --amber-soft: rgba(255, 179, 0, 0.08);
  --ink: #f7ecd0;
  --muted: rgba(247, 236, 208, 0.68);
  --panel: #080806;
  --line: rgba(255, 179, 0, 0.42);
  --green: #33ff57;
  --cyan: #00ffff;
  --red: #ff4500;
  --yellow: #ffff00;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--void);
}

body {
  margin: 0;
  overflow-x: hidden;
  min-width: 320px;
  background:
    linear-gradient(90deg, rgba(255, 179, 0, 0.05) 1px, transparent 1px),
    linear-gradient(180deg, rgba(255, 179, 0, 0.05) 1px, transparent 1px),
    var(--void);
  background-size: 34px 34px, 34px 34px, 100% 100%;
  color: var(--ink);
  font-family: "Avenir Next", "Segoe UI", Helvetica, Arial, sans-serif;
}

button {
  font: inherit;
}

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

.shell {
  width: min(1560px, calc(100% - 28px));
  margin: 0 auto;
  padding: 20px 0 34px;
  min-width: 0;
}

.masthead {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(240px, 360px);
  gap: 18px;
  align-items: stretch;
  min-height: 150px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--amber);
}

.eyebrow,
.label,
.artifact-label,
.mode-button span,
.channel-row code,
.status-panel span,
.status-panel small {
  margin: 0;
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

h1 {
  max-width: 980px;
  margin: 10px 0 0;
  color: var(--amber);
  font-size: 7.8rem;
  font-weight: 900;
  letter-spacing: 0;
  line-height: 0.86;
  text-transform: uppercase;
  text-shadow: 0 0 18px rgba(255, 179, 0, 0.18);
}

.status-panel,
.readout-panel,
.lower-ledger article {
  border: 1px solid var(--line);
  background: rgba(255, 179, 0, 0.035);
}

.status-panel {
  display: grid;
  align-content: space-between;
  padding: 16px;
  min-height: 136px;
}

.status-panel span,
.status-panel small {
  color: var(--muted);
}

.status-panel strong {
  color: var(--amber);
  font-size: 3.4rem;
  font-weight: 900;
  line-height: 0.9;
  text-transform: uppercase;
  overflow-wrap: anywhere;
}

.control-rack {
  position: sticky;
  top: 0;
  z-index: 4;
  padding: 12px 0;
  background: rgba(0, 0, 0, 0.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--amber-dim);
}

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

.mode-button {
  min-height: 64px;
  min-width: 0;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 0;
  background: var(--panel);
  color: var(--ink);
  cursor: pointer;
  text-align: left;
  text-transform: uppercase;
  transition: border-color 140ms ease, background 140ms ease, color 140ms ease;
}

.mode-button span {
  display: block;
  margin-bottom: 7px;
  color: var(--muted);
}

.mode-button:hover,
.mode-button.is-active {
  border-color: var(--amber);
  background: var(--amber);
  color: var(--void);
}

.mode-button:hover span,
.mode-button.is-active span {
  color: var(--void);
}

.instrument-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.52fr) minmax(340px, 0.48fr);
  gap: 12px;
  margin-top: 12px;
}

.artifact-frame {
  position: relative;
  min-height: 520px;
  border: 1px solid var(--amber);
  background: var(--void);
  overflow: hidden;
  box-shadow: inset 0 0 32px rgba(255, 179, 0, 0.11);
}

canvas {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1200 / 680;
}

.artifact-label {
  position: absolute;
  padding: 7px 9px;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.8);
  color: var(--amber);
  pointer-events: none;
}

.top-left {
  top: 12px;
  left: 12px;
}

.bottom-right {
  right: 12px;
  bottom: 12px;
}

.readout-panel {
  display: grid;
  align-content: start;
  gap: 18px;
  padding: 16px;
}

h2 {
  margin: 0;
  color: var(--amber);
  font-size: 2.4rem;
  line-height: 0.96;
  text-transform: uppercase;
  overflow-wrap: anywhere;
}

p {
  margin: 10px 0 0;
  color: var(--muted);
  line-height: 1.48;
}

.channel-table {
  display: grid;
  gap: 8px;
}

.channel-row {
  display: grid;
  grid-template-columns: 12px minmax(70px, 0.7fr) minmax(110px, 1fr);
  gap: 9px;
  align-items: center;
  padding: 9px;
  border: 1px solid var(--amber-dim);
  background: rgba(0, 0, 0, 0.38);
}

.channel-row i {
  width: 12px;
  height: 12px;
  border: 1px solid var(--void);
  box-shadow: 0 0 8px currentColor;
}

.channel-row strong {
  color: var(--ink);
  font-size: 0.83rem;
  text-transform: uppercase;
}

.channel-row span {
  color: var(--muted);
  font-size: 0.83rem;
}

.channel-row code {
  grid-column: 2 / -1;
  color: var(--amber);
}

.rule-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin: 10px 0 0;
  padding: 0;
  list-style: none;
}

.rule-list li,
.fail-grid span {
  min-height: 34px;
  padding: 8px;
  border: 1px solid var(--amber-dim);
  color: var(--ink);
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: 0.72rem;
  text-transform: uppercase;
}

.lower-ledger {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 12px;
  margin-top: 12px;
}

.lower-ledger article {
  padding: 16px;
}

dl {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
  margin: 12px 0 0;
}

dl div {
  padding: 10px;
  border: 1px solid var(--amber-dim);
  background: rgba(0, 0, 0, 0.36);
}

dt {
  color: var(--amber);
  font-family: ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  font-size: 0.74rem;
  font-weight: 900;
  text-transform: uppercase;
}

dd {
  margin: 7px 0 0;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.45;
}

.fail-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  margin-top: 12px;
}

@media (max-width: 1120px) {
  .masthead,
  .instrument-grid,
  .lower-ledger {
    grid-template-columns: 1fr;
  }

  .mode-group {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  dl,
  .fail-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 660px) {
  .shell {
    width: min(100% - 18px, 1560px);
    padding-top: 12px;
  }

  .masthead {
    min-height: auto;
  }

  h1 {
    font-size: 3.2rem;
    overflow-wrap: anywhere;
  }

  .control-rack {
    position: static;
  }

  .mode-group,
  .rule-list,
  dl,
  .fail-grid {
    grid-template-columns: 1fr;
  }

  .artifact-frame {
    min-height: 300px;
  }

  .channel-row {
    grid-template-columns: 12px minmax(0, 1fr);
  }

  .channel-row span,
  .channel-row code {
    grid-column: 2;
  }
}

@media (max-width: 430px) {
  .shell {
    width: min(100% - 16px, 1560px);
  }

  h1 {
    font-size: 2.62rem;
  }

  .status-panel strong {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.7rem;
  }

  .artifact-label {
    max-width: calc(100% - 24px);
    font-size: 0.62rem;
  }
}

.demo-context{width:min(100% - 32px,1560px);margin:16px auto;font:12px/1.7 monospace;color:#c8c0ad}.demo-context a{color:#ffb300}.mode-button:focus-visible,a:focus-visible{outline:2px solid #fff;outline-offset:4px}
/* Keep the instrument visible before the explanatory ledger. */
.masthead{min-height:84px;grid-template-columns:minmax(0,1fr) 260px;align-items:center}
h1{font-size:clamp(28px,3vw,43px);line-height:1.06;max-width:760px;text-shadow:none}
.status-panel{min-height:80px;gap:8px;padding:12px}.status-panel strong{font-size:23px}
.mode-button{min-height:52px}.readout-panel h2{font-size:25px}
@media(max-width:700px){.masthead{grid-template-columns:1fr;min-height:0;gap:10px}.status-panel{display:none}h1{font-size:30px;line-height:1.08}.mode-group{grid-template-columns:1fr 1fr}.mode-button{min-height:48px;font-size:11px}.mode-button span{font-size:8px}.mode-button:last-child{grid-column:1/-1}.control-rack{position:static}.artifact-frame{min-height:0}.artifact-label{font-size:8px}.demo-context{font-size:10px}.shell{padding-top:8px}}