.hippo-projection-explorer {
  --hippo-ink: #252329;
  --hippo-muted: #6f6b76;
  --hippo-paper: #f1f0ec;
  --hippo-panel: #f7f5f8;
  --hippo-line: #e4e1e7;
  --hippo-accent: #645495;
  --hippo-signal: #645495;
  --hippo-basis-0: #645495;
  --hippo-basis-1: #7a68a1;
  --hippo-basis-2: #9a8ab8;
  margin: 2.75rem 0;
  color: var(--hippo-ink);
  font-family: "Source Sans 3", sans-serif;
}

.hippo-projection-explorer__heading {
  max-width: 42rem;
  margin-bottom: 1.5rem;
}

.hippo-projection-explorer__eyebrow {
  margin: 0 0 0.35rem;
  color: var(--hippo-accent);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hippo-projection-explorer__heading h3 {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.6rem;
  line-height: 1.15;
}

.hippo-projection-explorer__heading p:last-child {
  margin: 0.75rem 0 0;
  color: var(--hippo-muted);
  font-size: 1rem;
  line-height: 1.55;
}

.hippo-projection-explorer__body {
  display: grid;
  grid-template-columns: minmax(12rem, 0.72fr) minmax(0, 1.28fr);
  gap: clamp(1.5rem, 5vw, 4.5rem);
  align-items: start;
}

.hippo-projection-explorer__steps {
  padding: 0.5rem 0;
}

.hippo-projection-explorer__step {
  min-height: 58vh;
  display: flex;
  align-items: center;
  border-top: 1px solid var(--hippo-line);
  opacity: 0.4;
  transition: opacity 180ms ease;
}

.hippo-projection-explorer__step:last-child {
  border-bottom: 1px solid var(--hippo-line);
}

.hippo-projection-explorer__step.is-active {
  opacity: 1;
}

.hippo-projection-explorer__step-content {
  padding: 1.35rem 0;
}

.hippo-projection-explorer__time {
  color: var(--hippo-accent);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.82rem;
  font-weight: 500;
}

.hippo-projection-explorer__step h4 {
  margin: 0.45rem 0 0.55rem;
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.2rem;
  line-height: 1.25;
}

.hippo-projection-explorer__step p {
  margin: 0;
  color: var(--hippo-muted);
  font-size: 0.98rem;
  line-height: 1.55;
}

.hippo-projection-explorer__stage {
  position: sticky;
  top: 5.5rem;
  padding: clamp(1rem, 2vw, 1.5rem);
  border: 1px solid var(--hippo-line);
  border-radius: 6px;
  background: var(--hippo-paper);
  box-shadow: 8px 9px 0 rgba(23, 34, 31, 0.08);
}

.hippo-projection-explorer__stage-header {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: baseline;
  margin-bottom: 0.65rem;
}

.hippo-projection-explorer__stage-title,
.hippo-projection-explorer__sample-count {
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.75rem;
}

.hippo-projection-explorer__stage-title {
  color: var(--hippo-ink);
  font-weight: 500;
}

.hippo-projection-explorer__sample-count {
  color: var(--hippo-muted);
  text-align: right;
}

.hippo-projection-explorer__canvas {
  width: 100%;
  height: 250px;
  display: block;
  border-bottom: 1px solid var(--hippo-line);
}

.hippo-projection-explorer__legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem 1rem;
  margin: 0.85rem 0 1rem;
  color: var(--hippo-muted);
  font-size: 0.78rem;
}

.hippo-projection-explorer__legend span::before {
  content: "";
  display: inline-block;
  width: 0.8rem;
  height: 0.16rem;
  margin-right: 0.35rem;
  vertical-align: middle;
}

.hippo-projection-explorer__legend span:first-child::before {
  background: var(--hippo-signal);
}

.hippo-projection-explorer__legend span:last-child::before {
  background: var(--hippo-accent);
}

.hippo-projection-explorer__memory {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(7.5rem, 0.8fr);
  gap: 1rem;
  border-top: 1px solid var(--hippo-line);
  padding-top: 1rem;
}

.hippo-projection-explorer__memory-label {
  margin: 0 0 0.55rem;
  color: var(--hippo-muted);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.68rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.hippo-projection-explorer__coefficients {
  display: grid;
  gap: 0.48rem;
}

.hippo-projection-explorer__coefficient {
  display: grid;
  grid-template-columns: 1.45rem minmax(0, 1fr) 2.8rem;
  align-items: center;
  column-gap: 0.45rem;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.72rem;
}

.hippo-projection-explorer__track {
  position: relative;
  height: 0.5rem;
  overflow: hidden;
  background: #e4e1e7;
}

.hippo-projection-explorer__track::before {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1px;
  background: #b9b4c0;
  content: "";
}

.hippo-projection-explorer__bar {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 0;
  transition: width 220ms ease, transform 220ms ease;
}

.hippo-projection-explorer__coefficient:nth-child(1) .hippo-projection-explorer__bar { background: var(--hippo-basis-0); }
.hippo-projection-explorer__coefficient:nth-child(2) .hippo-projection-explorer__bar { background: var(--hippo-basis-1); }
.hippo-projection-explorer__coefficient:nth-child(3) .hippo-projection-explorer__bar { background: var(--hippo-basis-2); }

.hippo-projection-explorer__value {
  text-align: right;
}

.hippo-projection-explorer__observations {
  display: grid;
  gap: 0.28rem;
}

.hippo-projection-explorer__observation {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.2rem 0.35rem;
  border-left: 2px solid transparent;
  color: var(--hippo-muted);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.72rem;
  transition: background 180ms ease, border-color 180ms ease, color 180ms ease;
}

.hippo-projection-explorer__observation.is-observed {
  color: var(--hippo-ink);
  border-left-color: var(--hippo-signal);
  background: rgba(22, 122, 104, 0.08);
}

.hippo-projection-explorer__note {
  margin: 1.1rem 0 0;
  color: var(--hippo-muted);
  font-size: 0.86rem;
  line-height: 1.5;
}

@media (max-width: 760px) {
  .hippo-projection-explorer__body {
    display: flex;
    flex-direction: column;
    gap: 0;
  }

  .hippo-projection-explorer__stage {
    position: sticky;
    top: 0.75rem;
    order: -1;
    width: 100%;
    margin-bottom: 1.25rem;
  }

  .hippo-projection-explorer__canvas {
    height: 210px;
  }

  .hippo-projection-explorer__step {
    min-height: 42vh;
  }

  .hippo-projection-explorer__memory {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .hippo-projection-explorer *,
  .hippo-projection-explorer *::before {
    transition-duration: 0ms !important;
  }
}

/* Keep the scroll stage inside the article column. */
.hippo-projection-explorer {
  width: 100%;
  margin: 3rem 0;
  background: var(--hippo-paper);
}

.hippo-projection-explorer__body {
  display: block;
  position: relative;
}

.hippo-projection-explorer__stage {
  position: sticky;
  top: 0;
  z-index: 1;
  box-sizing: border-box;
  width: 100%;
  height: 100svh;
  min-height: 34rem;
  padding: clamp(1rem, 3vw, 2.5rem) clamp(1rem, 8vw, 8rem);
  border: 0;
  border-radius: 0;
  background: var(--hippo-paper);
  box-shadow: none;
  display: grid;
  grid-template-rows: auto auto auto auto auto;
  align-content: center;
}

.hippo-projection-explorer__heading {
  max-width: none;
  margin: 0 0 0.55rem;
}

.hippo-projection-explorer__heading h3 {
  font-size: clamp(1.25rem, 2vw, 1.8rem);
}

.hippo-projection-explorer__stage-header {
  margin-bottom: 0.4rem;
}

.hippo-projection-explorer__canvas {
  width: min(100%, 30rem);
  height: auto;
  aspect-ratio: 6 / 3;
  justify-self: center;
  border-top: 1px solid var(--hippo-line);
}

.hippo-projection-explorer__legend {
  margin: 0.65rem 0 0.8rem;
}

.hippo-projection-explorer__memory {
  grid-template-columns: minmax(12rem, 0.7fr) minmax(0, 1.3fr);
  gap: clamp(1rem, 4vw, 3rem);
  padding-top: 0.85rem;
}

.hippo-projection-explorer__bases {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.5rem;
}

.hippo-projection-explorer__basis {
  min-width: 0;
  padding: 0.45rem 0.55rem 0.5rem;
  border-left: 3px solid var(--hippo-line);
}

.hippo-projection-explorer__basis span,
.hippo-projection-explorer__basis strong {
  display: block;
}

.hippo-projection-explorer__basis span {
  margin-bottom: 0.25rem;
  color: var(--hippo-muted);
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.64rem;
  text-transform: uppercase;
}

.hippo-projection-explorer__basis strong {
  overflow-wrap: anywhere;
  font-family: "Source Serif 4", serif;
  font-size: clamp(0.78rem, 1.3vw, 1rem);
  font-weight: 600;
}

.hippo-projection-explorer__basis--level { border-left-color: var(--hippo-basis-0); }
.hippo-projection-explorer__basis--trend { border-left-color: var(--hippo-basis-1); }
.hippo-projection-explorer__basis--curvature { border-left-color: var(--hippo-basis-2); }

.hippo-projection-explorer__steps {
  height: 600svh;
  margin-top: 0;
  pointer-events: none;
}

.hippo-projection-explorer__step,
.hippo-projection-explorer__step:last-child {
  display: block;
  min-height: 100svh;
  border: 0;
  opacity: 0;
}

@media (max-width: 760px) {
  .hippo-projection-explorer__stage {
    position: sticky;
    top: 0;
    width: 100%;
    height: 100svh;
    min-height: 31rem;
    margin: 0;
    padding: 1rem;
    grid-template-rows: auto auto auto auto auto;
  }

  .hippo-projection-explorer__memory {
    grid-template-columns: minmax(7rem, 0.65fr) minmax(0, 1.35fr);
    gap: 0.85rem;
  }

  .hippo-projection-explorer__coefficient {
    grid-template-columns: 1.2rem minmax(0, 1fr) 2.3rem;
    column-gap: 0.3rem;
    font-size: 0.66rem;
  }

  .hippo-projection-explorer__bases {
    gap: 0.3rem;
  }

  .hippo-projection-explorer__basis {
    padding: 0.38rem;
  }

  .hippo-projection-explorer__basis span {
    font-size: 0.56rem;
  }
}