:root {
  --ink: #eef5e9;
  --muted: #8c9a92;
  --dim: #56635d;
  --panel: #111713;
  --panel-soft: #151d18;
  --line: #26332b;
  --lime: #c8ff62;
  --cyan: #57e6d0;
  --amber: #f2bd55;
  --coral: #ff6f61;
  --black: #080b09;
  --mono: "SFMono-Regular", "Cascadia Code", "Liberation Mono", Menlo, monospace;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html { background: var(--black); scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 78% -10%, rgba(87, 230, 208, 0.09), transparent 34rem),
    linear-gradient(rgba(200, 255, 98, 0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(200, 255, 98, 0.018) 1px, transparent 1px),
    var(--black);
  background-size: auto, 32px 32px, 32px 32px, auto;
  font-family: var(--sans);
  min-width: 320px;
}

button, input, select { font: inherit; }
button, select { color: inherit; }
button:focus-visible, input:focus-visible, select:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
}

.shell { width: min(1500px, 100%); margin: 0 auto; padding: 0 28px 36px; }

.masthead {
  height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}

.wordmark {
  display: flex;
  align-items: center;
  gap: 11px;
  color: var(--ink);
  text-decoration: none;
  font-family: var(--mono);
  font-size: 14px;
  letter-spacing: 0.16em;
  font-weight: 800;
}

.wordmark small {
  color: var(--muted);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-left: 1px solid var(--line);
  padding-left: 11px;
}

.mark { width: 22px; height: 20px; display: flex; gap: 3px; align-items: flex-end; }
.mark i { display: block; width: 5px; background: var(--lime); transform: skew(-13deg); }
.mark i:nth-child(1) { height: 12px; }
.mark i:nth-child(2) { height: 20px; }
.mark i:nth-child(3) { height: 15px; background: var(--cyan); }

.mode-badge {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-height: 32px;
  padding: 0 13px;
  border: 1px solid rgba(200, 255, 98, 0.36);
  background: rgba(200, 255, 98, 0.055);
  color: var(--lime);
  font: 600 10px/1 var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.mast-actions { display: flex; align-items: center; gap: 10px; }
.tour-toggle { min-height: 32px; padding: 0 11px; color: var(--muted); background: transparent; font-size: 9px; text-transform: uppercase; }
.tour-toggle[aria-pressed="true"] { color: var(--cyan); border-color: rgba(87,230,208,.38); }

.mode-badge[data-mode="live"] { color: var(--cyan); border-color: rgba(87, 230, 208, 0.4); background: rgba(87, 230, 208, 0.06); }
.pulse { width: 6px; height: 6px; border-radius: 50%; background: currentColor; box-shadow: 0 0 0 0 currentColor; animation: pulse 2s infinite; }

@keyframes pulse { 50% { box-shadow: 0 0 0 5px transparent; } }

.story-layer {
  padding: 54px 0 42px;
  border-bottom: 1px solid var(--line);
}
.story-beats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.story-beats article { min-height: 210px; padding: 26px; background: linear-gradient(145deg, rgba(200,255,98,.045), transparent 68%), var(--panel); }
.story-beats span { display: block; margin-bottom: 38px; color: var(--lime); font: 600 10px/1 var(--mono); letter-spacing: .12em; }
.story-beats strong { display: block; max-width: 390px; font-size: clamp(19px, 2vw, 29px); line-height: 1.17; letter-spacing: -.035em; font-weight: 560; }
.story-beats p { margin: 15px 0 0; max-width: 390px; color: var(--muted); font-size: 13px; line-height: 1.55; }

.substrate-strip { display: grid; grid-template-columns: minmax(230px,.7fr) minmax(0,1.7fr); gap: 42px; padding: 40px 0; border-bottom: 1px solid var(--line); }
.comparison-heading h2 { max-width: 320px; margin: 0; font-size: clamp(24px, 2.5vw, 38px); line-height: 1.06; letter-spacing: -.045em; font-weight: 550; }
.comparison-table { border-top: 1px solid var(--line); }
.comparison-row { display: grid; grid-template-columns: .55fr 1fr 1fr; gap: 18px; align-items: center; min-height: 54px; border-bottom: 1px solid var(--line); }
.comparison-row span, .comparison-row b { color: var(--muted); font: 600 9px/1.3 var(--mono); letter-spacing: .08em; }
.comparison-row strong { font-size: 13px; font-weight: 520; }
.comparison-row strong:last-child { color: #a2ada6; }
.comparison-labels { min-height: 34px; }
.comparison-labels b:first-of-type { color: var(--lime); }

.tour-caption {
  max-width: 880px;
  margin: 0 0 20px;
  padding-left: 14px;
  border-left: 2px solid rgba(87,230,208,.5);
  color: #a7b5ad;
  font-size: 13px;
  line-height: 1.55;
}
.instrument-view .tour-caption { display: none; }

.hero {
  min-height: 390px;
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(310px, 0.75fr);
  align-items: end;
  gap: 48px;
  padding: 64px 0 52px;
  border-bottom: 1px solid var(--line);
}

.eyebrow, .panel-kicker {
  margin: 0 0 15px;
  color: var(--lime);
  font: 600 10px/1.2 var(--mono);
  letter-spacing: 0.16em;
}

h1, h2, p { margin-top: 0; }
h1 { margin-bottom: 22px; font-size: clamp(58px, 7.4vw, 112px); line-height: 0.82; letter-spacing: -0.068em; font-weight: 650; }
h1 em { color: var(--lime); font-style: normal; font-weight: 400; }
.lede { max-width: 630px; margin: 0; color: #b6c1ba; font-size: clamp(16px, 1.5vw, 21px); line-height: 1.55; }

.hero-readout { border: 1px solid var(--line); background: rgba(17, 23, 19, 0.82); }
.hero-block { display: flex; justify-content: space-between; align-items: baseline; padding: 26px; border-bottom: 1px solid var(--line); }
.hero-block span, .hero-state span, .hero-state small { font-family: var(--mono); }
.hero-block span { color: var(--muted); font-size: 10px; letter-spacing: 0.16em; }
.hero-block strong { font: 500 clamp(36px, 5vw, 72px)/1 var(--mono); letter-spacing: -0.06em; }
.hero-state { display: flex; flex-direction: column; gap: 9px; padding: 20px 26px; }
.hero-state span { color: var(--cyan); font-size: 11px; }
.hero-state small { color: var(--dim); font-size: 9px; }

.scoreboard { display: grid; grid-template-columns: repeat(4, 1fr); border-bottom: 1px solid var(--line); }
.scoreboard-caption { grid-column: 1 / -1; max-width: none; margin: 0; padding: 15px 14px; border-left: 2px solid rgba(87,230,208,.5); border-bottom: 1px solid var(--line); background: rgba(87,230,208,.025); }
.score { min-height: 150px; padding: 25px 24px 20px; border-right: 1px solid var(--line); }
.score:last-child { border-right: 0; }
.score.primary { background: linear-gradient(145deg, rgba(200, 255, 98, 0.075), transparent 70%); }
.score-label { display: flex; align-items: center; gap: 8px; color: var(--muted); font: 600 9px/1.3 var(--mono); letter-spacing: 0.09em; }
.score strong { display: block; margin: 13px 0 9px; font: 500 clamp(31px, 3.2vw, 50px)/1 var(--mono); letter-spacing: -0.055em; }
.score.primary strong { color: var(--lime); }
.score small { color: var(--dim); font: 10px/1.4 var(--mono); }
.dot { width: 7px; height: 7px; border-radius: 50%; }
.dot.colony { background: var(--lime); }
.dot.persistence { background: var(--cyan); }

.control-deck {
  display: grid;
  grid-template-columns: auto auto minmax(220px, 1fr) auto;
  gap: 18px;
  align-items: center;
  padding: 18px 0 24px;
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(8, 11, 9, 0.93);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.control-caption { grid-column: 1 / -1; max-width: none; margin: 0 0 -3px; }

.segmented, .transport { display: flex; align-items: center; }
button, select {
  min-height: 38px;
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 0 13px;
  font: 600 10px/1 var(--mono);
  letter-spacing: 0.04em;
  cursor: pointer;
}
button:hover:not(:disabled), select:hover { border-color: var(--dim); background: var(--panel-soft); }
button:disabled { opacity: 0.35; cursor: not-allowed; }
.segmented button + button, .transport button + button { border-left: 0; }
.segmented button.active { color: var(--black); border-color: var(--lime); background: var(--lime); }
.icon-button { min-width: 40px; color: var(--lime); font-size: 15px; }

.rate-control { display: grid; grid-template-columns: auto minmax(100px, 1fr) 92px; gap: 12px; align-items: center; color: var(--muted); font: 600 9px/1 var(--mono); letter-spacing: 0.09em; }
.rate-control output { color: var(--ink); text-align: right; letter-spacing: 0; }
.dataset-seed-controls { display: flex; flex-wrap: wrap; align-items: center; justify-content: flex-end; gap: 10px 16px; }
.dataset-control, .seed-control { display: flex; align-items: center; gap: 9px; color: var(--muted); font: 600 9px/1 var(--mono); letter-spacing: 0.08em; }
.dataset-control select { max-width: 190px; }
.seed-control select { max-width: 128px; }
.scrubber { grid-column: 1 / -1; }

input[type="range"] { width: 100%; accent-color: var(--lime); cursor: pointer; }
input[type="range"]:disabled { opacity: 0.3; cursor: not-allowed; }

.headline-panel, .heads-section, .organism-panel, .progress-panel, .prompt-panel { padding: 42px 0; border-bottom: 1px solid var(--line); }
.panel-heading, .section-heading { display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; margin-bottom: 25px; }
.panel-heading h2, .section-heading h2 { margin: 0; font-size: clamp(23px, 2.6vw, 38px); letter-spacing: -0.04em; font-weight: 550; }
.reference-key { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 10px 18px; max-width: 670px; color: var(--muted); font: 9px/1.3 var(--mono); }
.reference-key span { display: flex; align-items: center; gap: 7px; }
.reference-key b { color: var(--ink); font-weight: 500; }
.reference-key i { width: 17px; height: 2px; display: inline-block; }
.colony-line { background: var(--lime); }
.persistence-line { background: var(--cyan); }
.mlp-line { border-top: 1px dashed var(--amber); }

.chart-wrap { height: 350px; position: relative; border: 1px solid var(--line); background: rgba(17, 23, 19, 0.64); overflow: hidden; }
.chart-wrap::after { content: ""; position: absolute; inset: 0; pointer-events: none; background: linear-gradient(90deg, rgba(200,255,98,0.025), transparent 22%); }
.chart-wrap canvas { width: 100%; height: 100%; display: block; }
.chart-empty { position: absolute; inset: 0; display: grid; place-items: center; color: var(--dim); font: 10px/1 var(--mono); letter-spacing: 0.08em; text-transform: uppercase; }
.chart-note { margin: 13px 0 0; color: var(--dim); font: 9px/1.5 var(--mono); }

.call-key { display: flex; gap: 15px; color: var(--muted); font: 9px/1 var(--mono); }
.call-key span { display: flex; align-items: center; gap: 6px; }
.call-key i { width: 6px; height: 6px; border-radius: 50%; background: var(--dim); }
.call-key i.correct { background: var(--cyan); }
.call-key i.wrong { background: var(--coral); }

.head-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.head-card { min-width: 0; padding: 18px; background: var(--panel); }
.head-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.head-id { display: flex; align-items: baseline; gap: 8px; }
.head-id strong { font: 600 12px/1 var(--mono); }
.head-id span { color: var(--muted); font: 9px/1 var(--mono); }
.call-chip { min-width: 57px; padding: 6px 8px; text-align: center; border: 1px solid var(--dim); color: var(--muted); font: 700 9px/1 var(--mono); letter-spacing: 0.06em; }
.call-chip.skip { color: var(--lime); border-color: rgba(200,255,98,0.45); background: rgba(200,255,98,0.06); }
.call-chip.keep { color: var(--cyan); border-color: rgba(87,230,208,0.4); background: rgba(87,230,208,0.05); }
.trace-wrap { height: 118px; position: relative; background: #0b100d; border: 1px solid #202b24; }
.trace-wrap canvas { display: block; width: 100%; height: 100%; }
.head-foot { display: flex; justify-content: space-between; gap: 8px; margin-top: 10px; color: var(--dim); font: 8px/1.3 var(--mono); }
.head-foot .truth.correct { color: var(--cyan); }
.head-foot .truth.wrong { color: var(--coral); }

.organism-heading p:last-child { margin: 0; color: var(--dim); font: 9px/1.4 var(--mono); }
.organism-counters { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; margin-bottom: 18px; border: 1px solid var(--line); background: var(--line); }
.organism-counters article { min-height: 118px; padding: 18px; background: linear-gradient(145deg, rgba(200,255,98,.045), transparent), var(--panel); }
.organism-counters span { display: block; color: var(--muted); font: 600 9px/1.3 var(--mono); letter-spacing: .08em; }
.organism-counters strong { display: block; margin: 16px 0 7px; color: var(--lime); font: 500 clamp(23px,2.7vw,39px)/1 var(--mono); letter-spacing: -.045em; }
.organism-counters article:nth-child(3) strong { color: var(--muted); font-size: clamp(16px,1.7vw,23px); letter-spacing: -.03em; }
.organism-counters small { color: var(--dim); font: 8px/1.35 var(--mono); text-transform: uppercase; }
.organism-grid { display: grid; grid-template-columns: repeat(8, 1fr); gap: 8px; }
.organism { padding: 14px 12px; border: 1px solid var(--line); background: rgba(17,23,19,0.64); }
.organism-top { display: flex; justify-content: space-between; color: var(--muted); font: 9px/1 var(--mono); }
.organism-top i { width: 6px; height: 6px; border-radius: 50%; background: var(--lime); box-shadow: 0 0 9px rgba(200,255,98,0.55); }
.organism strong { display: block; margin: 13px 0 4px; font: 500 22px/1 var(--mono); }
.organism small { color: var(--dim); font: 8px/1 var(--mono); text-transform: uppercase; letter-spacing: 0.08em; }

.feed-status { margin: 0; color: var(--dim); font: 9px/1.4 var(--mono); text-transform: uppercase; }
.progress-feed { display: grid; gap: 10px; }
.progress-entry { display: grid; grid-template-columns: 116px minmax(0,1fr); gap: 24px; padding: 24px; border: 1px solid var(--line); background: rgba(17,23,19,.72); }
.progress-meta { display: flex; flex-direction: column; gap: 9px; align-items: flex-start; color: var(--dim); font: 9px/1.3 var(--mono); }
.kind-badge { padding: 5px 7px; border: 1px solid currentColor; color: var(--cyan); text-transform: uppercase; letter-spacing: .08em; }
.kind-badge[data-kind="seal"] { color: var(--lime); }
.kind-badge[data-kind="discovery"] { color: var(--amber); }
.kind-badge[data-kind="infra"] { color: #a8b7ff; }
.progress-copy h3 { margin: 0 0 12px; max-width: 900px; font-size: clamp(18px,2vw,27px); line-height: 1.2; letter-spacing: -.025em; font-weight: 560; }
.safe-markdown { max-width: 960px; color: #b7c2bb; font-size: 14px; line-height: 1.65; }
.safe-markdown p:last-child { margin-bottom: 0; }
.safe-markdown a { color: var(--cyan); text-underline-offset: 3px; }
.safe-markdown code { padding: 2px 4px; background: #080b09; color: var(--lime); font: .9em var(--mono); }
.expert-fold { margin-top: 16px; border-top: 1px solid var(--line); padding-top: 13px; }
.expert-fold summary { color: var(--muted); cursor: pointer; font: 600 9px/1.4 var(--mono); letter-spacing: .07em; text-transform: uppercase; }
.expert-fold .safe-markdown { margin-top: 12px; color: var(--muted); font: 11px/1.65 var(--mono); }
.progress-links { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 14px; }
.progress-links a { color: var(--cyan); font: 9px/1 var(--mono); }

.prompt-panel { display: grid; grid-template-columns: minmax(250px,.8fr) minmax(0,1.2fr); gap: 54px; }
.prompt-intro h2 { max-width: 520px; margin: 0 0 20px; font-size: clamp(28px,3.4vw,50px); line-height: 1.02; letter-spacing: -.05em; font-weight: 560; }
.prompt-framing { max-width: 600px; color: #bdc8c1; font-size: 16px; line-height: 1.65; }
.prompt-console { padding: 22px; border: 1px solid var(--line); background: var(--panel); }
.prompt-status-row { display: flex; justify-content: space-between; gap: 16px; margin-bottom: 22px; color: var(--dim); font: 8px/1.4 var(--mono); text-transform: uppercase; }
.prompt-state { color: var(--amber); }
.prompt-state.available { color: var(--lime); }
.prompt-console label { display: block; margin: 15px 0 7px; color: var(--muted); font: 600 9px/1 var(--mono); letter-spacing: .09em; }
.prompt-console select, .prompt-console textarea { width: 100%; }
.prompt-console select { min-height: 44px; }
.prompt-console textarea { resize: vertical; min-height: 105px; padding: 12px; color: var(--ink); border: 1px solid var(--line); background: #0b100d; font: 12px/1.55 var(--mono); }
.prompt-actions { display: flex; align-items: center; justify-content: space-between; margin: 10px 0 18px; }
.prompt-actions small { color: var(--dim); font: 8px/1 var(--mono); }
.prompt-actions button { color: var(--black); border-color: var(--lime); background: var(--lime); }
.answer-shell { min-height: 170px; padding: 16px; border: 1px solid var(--line); background: #080b09; }
.answer-label { display: flex; justify-content: space-between; margin-bottom: 14px; color: var(--dim); font: 8px/1 var(--mono); letter-spacing: .09em; }
.answer-label b { color: var(--amber); font-weight: 600; }
.answer-shell pre { margin: 0; color: #c9d2cc; white-space: pre-wrap; overflow-wrap: anywhere; font: 12px/1.7 var(--mono); }

footer { min-height: 100px; display: flex; align-items: center; justify-content: space-between; gap: 20px; color: var(--dim); font: 8px/1.5 var(--mono); letter-spacing: 0.08em; }
footer p { margin: 0; }

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

@media (max-width: 1100px) {
  .substrate-strip, .prompt-panel { grid-template-columns: 1fr; }
  .substrate-strip { gap: 28px; }
  .comparison-heading h2 { max-width: 520px; }
  .scoreboard { grid-template-columns: repeat(2, 1fr); }
  .score:nth-child(2) { border-right: 0; }
  .score:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .control-deck { grid-template-columns: auto auto 1fr; }
  .dataset-seed-controls { grid-column: 1 / 2; justify-content: flex-start; }
  .rate-control { grid-column: 2 / -1; }
  .head-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .organism-counters { grid-template-columns: repeat(2, 1fr); }
  .organism-grid { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 720px) {
  .shell { padding: 0 16px 24px; }
  .masthead { height: 62px; }
  .wordmark small { display: none; }
  .mast-actions { gap: 5px; }
  .tour-toggle { padding: 0 7px; font-size: 7px; }
  .mode-badge { max-width: 54vw; padding: 0 8px; font-size: 7px; }
  .story-layer { padding: 38px 0 28px; }
  .story-beats { grid-template-columns: 1fr; }
  .story-beats article { min-height: 0; padding: 22px; }
  .story-beats span { margin-bottom: 19px; }
  .substrate-strip { padding: 30px 0; }
  .comparison-row { grid-template-columns: .55fr 1fr 1fr; gap: 9px; }
  .comparison-row strong { font-size: 10px; }
  .hero { min-height: 0; grid-template-columns: 1fr; gap: 32px; padding: 50px 0 36px; }
  h1 { font-size: clamp(54px, 18vw, 82px); }
  .scoreboard { grid-template-columns: 1fr 1fr; }
  .score { padding: 19px 14px; min-height: 132px; }
  .score-label { font-size: 8px; }
  .control-deck { position: relative; grid-template-columns: 1fr; }
  .segmented, .transport { width: 100%; }
  .segmented button, .transport button { flex: 1; }
  .dataset-seed-controls, .rate-control, .scrubber { grid-column: 1; }
  .dataset-seed-controls { align-items: stretch; flex-direction: column; }
  .dataset-control, .seed-control { justify-content: space-between; }
  .rate-control { grid-template-columns: auto 1fr; }
  .rate-control output { grid-column: 2; }
  .panel-heading, .section-heading { align-items: flex-start; flex-direction: column; }
  .reference-key { justify-content: flex-start; }
  .chart-wrap { height: 290px; }
  .head-grid { grid-template-columns: 1fr; }
  .organism-grid { grid-template-columns: repeat(2, 1fr); }
  .organism-counters { grid-template-columns: 1fr 1fr; }
  .progress-entry { grid-template-columns: 1fr; gap: 14px; padding: 18px; }
  .progress-meta { flex-direction: row; align-items: center; }
  .prompt-panel { gap: 30px; }
  .prompt-console { padding: 16px; }
  .prompt-status-row { align-items: flex-start; flex-direction: column; }
  footer { align-items: flex-start; flex-direction: column; justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .pulse { animation: none; }
}