:root {
  --demo-ink: #121718;
  --demo-muted: #687272;
  --demo-line: #dfe4e2;
  --demo-paper: #f7f8f4;
  --demo-panel: #fcfdf9;
  --demo-blue: #2563eb;
  --demo-blue-soft: #eaf1ff;
  --demo-green: #087f5b;
  --demo-red: #b42318;
}

* { box-sizing: border-box; }

.live-demo-body {
  min-height: 100vh;
  margin: 0;
  background: var(--demo-paper);
  color: var(--demo-ink);
  font-family: var(--sans);
}

button,
input { font: inherit; }

.demo-topbar {
  height: 62px;
  padding: 0 clamp(20px, 4vw, 58px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--demo-line);
  background: rgba(247, 248, 244, 0.96);
}

.demo-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: inherit;
  text-decoration: none;
  font-family: var(--serif);
  font-size: 1.08rem;
}

.demo-brand em { color: var(--demo-blue); }

.demo-api-state {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--demo-muted);
  font-size: 0.76rem;
}

.state-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--demo-green);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--demo-green) 12%, transparent);
}

.state-dot.is-running { background: #d97706; }
.state-dot.is-error { background: var(--demo-red); }

.demo-shell {
  width: min(1540px, 100%);
  margin: 0 auto;
  padding: clamp(28px, 5vw, 64px) clamp(18px, 4vw, 58px) 80px;
}

.demo-intro {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(300px, 0.75fr);
  gap: clamp(40px, 8vw, 120px);
  align-items: end;
  margin-bottom: 34px;
}

.demo-kicker,
.control-label,
.section-index {
  display: block;
  color: var(--demo-blue);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.demo-intro h1 {
  max-width: 850px;
  margin: 12px 0 0;
  font-family: var(--serif);
  font-size: clamp(2.3rem, 5vw, 4.7rem);
  font-weight: 400;
  line-height: 0.98;
}

.demo-intro p {
  max-width: 52ch;
  margin: 0 0 4px;
  color: var(--demo-muted);
  font-size: 0.98rem;
  line-height: 1.65;
}

.demo-command {
  display: grid;
  grid-template-columns: minmax(250px, 1.2fr) auto minmax(210px, 0.8fr) auto;
  gap: 24px;
  align-items: end;
  padding: 20px 0;
  border-top: 1px solid var(--demo-ink);
  border-bottom: 1px solid var(--demo-line);
}

.demo-command label,
.budget-control label {
  display: block;
  margin-bottom: 8px;
  font-size: 0.72rem;
  font-weight: 600;
}

.key-input-wrap {
  display: grid;
  grid-template-columns: 1fr 38px;
  border: 1px solid var(--demo-line);
  background: var(--demo-panel);
}

.key-input-wrap input {
  min-width: 0;
  padding: 10px 12px;
  border: 0;
  outline: 0;
  background: transparent;
}

.icon-button {
  border: 0;
  border-left: 1px solid var(--demo-line);
  background: transparent;
  color: var(--demo-muted);
  cursor: pointer;
}

.key-control p {
  margin: 6px 0 0;
  color: var(--demo-muted);
  font-size: 0.67rem;
}

.scenario-tabs {
  display: flex;
  gap: 2px;
  margin-top: 8px;
}

.scenario-tabs button {
  padding: 9px 12px;
  border: 0;
  background: transparent;
  color: var(--demo-muted);
  cursor: pointer;
}

.scenario-tabs button.is-active {
  background: var(--demo-blue-soft);
  color: var(--demo-blue);
  font-weight: 600;
}

.budget-control strong { color: var(--demo-blue); }
.budget-control input,
.scale-block input { width: 100%; accent-color: var(--demo-blue); }

.run-button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 0 18px;
  border: 0;
  background: var(--demo-blue);
  color: #f8fbff;
  cursor: pointer;
}

.run-button:hover { background: #1d4ed8; }
.run-button:disabled { opacity: 0.55; cursor: wait; }
.run-button b { font-size: 1.2rem; font-weight: 400; }

.demo-workbench {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  border-bottom: 1px solid var(--demo-line);
}

.workbench-main {
  min-width: 0;
  padding: 28px 32px 34px 0;
  border-right: 1px solid var(--demo-line);
}

.query-strip {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 18px;
  align-items: center;
  margin-bottom: 28px;
  padding: 12px 14px;
  background: var(--demo-blue-soft);
}

.query-strip span {
  color: var(--demo-blue);
  font-size: 0.67rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.query-strip input {
  min-width: 0;
  border: 0;
  border-bottom: 1px solid #b9cdfb;
  outline: 0;
  background: transparent;
  color: var(--demo-ink);
  padding: 5px 0;
}

.context-head,
.result-heading,
.telemetry-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 15px;
}

.context-head h2,
.result-heading h2,
.telemetry-head h2 {
  margin: 5px 0 0;
  font-family: var(--serif);
  font-size: 1.45rem;
  font-weight: 400;
}

.context-counts {
  display: flex;
  gap: 18px;
  color: var(--demo-muted);
  font-size: 0.72rem;
}

.context-counts strong { color: var(--demo-ink); }

.context-view {
  height: 430px;
  overflow: auto;
  border-top: 1px solid var(--demo-line);
  border-bottom: 1px solid var(--demo-line);
  background: var(--demo-panel);
}

.context-line {
  display: grid;
  grid-template-columns: 44px 1fr;
  min-height: 25px;
  border-bottom: 1px solid #eff1ee;
  color: #596160;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.72rem;
  line-height: 1.45;
}

.context-line i {
  padding: 5px 9px;
  color: #a0a8a5;
  font-style: normal;
  text-align: right;
  border-right: 1px solid #eff1ee;
  user-select: none;
}

.context-line span {
  padding: 5px 10px;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.context-line.is-critical span {
  color: var(--demo-ink);
  background: #fff6d8;
  font-weight: 600;
}

.context-line.is-kept span { background: #edf7f1; color: #155c45; }
.context-line.is-dropped { opacity: 0.3; }

.telemetry {
  padding: 28px 0 34px 32px;
}

.telemetry-head { justify-content: flex-start; }

.telemetry-empty {
  min-height: 360px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  color: var(--demo-muted);
}

.empty-pulse {
  width: 42px;
  height: 42px;
  margin-bottom: 18px;
  border: 1px solid #b7c1bd;
  position: relative;
}

.empty-pulse::after {
  content: "";
  position: absolute;
  inset: 11px;
  background: var(--demo-blue);
  animation: demo-pulse 1.8s ease-in-out infinite;
}

@keyframes demo-pulse {
  50% { transform: scale(0.5); opacity: 0.25; }
}

.telemetry-empty strong { color: var(--demo-ink); font-weight: 500; }
.telemetry-empty p { max-width: 28ch; font-size: 0.8rem; line-height: 1.5; }

.hero-saving {
  margin: 12px 0 22px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--demo-line);
}

.hero-saving span {
  display: block;
  color: var(--demo-muted);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.hero-saving strong {
  display: block;
  margin: 8px 0 12px;
  color: var(--demo-blue);
  font-family: var(--serif);
  font-size: 4.2rem;
  font-weight: 400;
  line-height: 0.9;
}

.saving-track { height: 5px; background: #dfe4e2; }
.saving-track i { display: block; height: 100%; width: 0; background: var(--demo-blue); transition: width 700ms cubic-bezier(.16, 1, .3, 1); }

.metric-list { margin: 0; }
.metric-list div {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--demo-line);
}
.metric-list dt { color: var(--demo-muted); font-size: 0.75rem; }
.metric-list dd { margin: 0; color: var(--demo-ink); font-size: 0.78rem; }
.metric-list dd strong { color: var(--demo-green); }

.scale-block {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--demo-ink);
}
.scale-block label { display: block; margin-bottom: 10px; font-size: 0.72rem; }
.scale-metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 7px; margin-top: 14px; }
.scale-metrics strong { display: block; font-family: var(--serif); font-size: 1.05rem; font-weight: 400; }
.scale-metrics span { display: block; color: var(--demo-muted); font-size: 0.58rem; line-height: 1.3; }
.scale-block p { color: var(--demo-muted); font-size: 0.6rem; }

.result-stage {
  padding-top: 38px;
}

.result-heading p {
  max-width: 60ch;
  margin: 0;
  color: var(--demo-muted);
  font-size: 0.8rem;
}

.retention-map {
  display: grid;
  grid-template-columns: repeat(60, minmax(3px, 1fr));
  gap: 3px;
  margin: 18px 0 28px;
}

.retention-map i {
  height: 18px;
  background: #dfe4e2;
}
.retention-map i.is-kept { background: var(--demo-blue); }
.retention-map i.is-critical { background: #e9a800; }

.result-grid {
  display: grid;
  grid-template-columns: minmax(300px, 0.8fr) minmax(0, 1.2fr);
  border-top: 1px solid var(--demo-ink);
  border-bottom: 1px solid var(--demo-line);
}

.result-grid article { min-width: 0; padding: 24px; }
.answer-proof { border-right: 1px solid var(--demo-line); }

.proof-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
  color: var(--demo-muted);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.proof-head strong { color: var(--demo-green); font-size: 0.68rem; }
.proof-head button { border: 0; background: transparent; color: var(--demo-blue); cursor: pointer; }

.proof-line {
  margin-bottom: 10px;
  padding: 12px 14px;
  background: #edf7f1;
  color: #155c45;
  font-size: 0.8rem;
  line-height: 1.5;
}
.proof-line::before { content: "KEPT"; display: block; margin-bottom: 5px; color: var(--demo-green); font-size: 0.58rem; font-weight: 700; letter-spacing: 0.08em; }
.proof-line.is-missing { background: #fff0ed; color: var(--demo-red); }
.proof-line.is-missing::before { content: "MISSING"; color: var(--demo-red); }

.compressed-output pre,
#compressed-output {
  max-height: 370px;
  margin: 0;
  overflow: auto;
  white-space: pre-wrap;
  color: #2b3332;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.72rem;
  line-height: 1.55;
}

.demo-error {
  position: fixed;
  left: 50%;
  bottom: 24px;
  z-index: 20;
  width: min(560px, calc(100% - 32px));
  transform: translateX(-50%);
  padding: 14px 18px;
  background: #fff0ed;
  border: 1px solid #f6c7bf;
  color: var(--demo-red);
  font-size: 0.82rem;
}

@media (max-width: 1050px) {
  .demo-command { grid-template-columns: 1fr 1fr; }
  .demo-workbench { grid-template-columns: 1fr; }
  .workbench-main { padding-right: 0; border-right: 0; }
  .telemetry { padding-left: 0; border-top: 1px solid var(--demo-line); }
}

@media (max-width: 720px) {
  .demo-intro { grid-template-columns: 1fr; gap: 20px; }
  .demo-command { grid-template-columns: 1fr; }
  .query-strip { grid-template-columns: 1fr; gap: 5px; }
  .context-head { align-items: flex-start; flex-direction: column; }
  .result-grid { grid-template-columns: 1fr; }
  .answer-proof { border-right: 0; border-bottom: 1px solid var(--demo-line); }
  .retention-map { grid-template-columns: repeat(30, 1fr); }
  .demo-api-state { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  .empty-pulse::after { animation: none; }
  .saving-track i { transition: none; }
}