.rb-didactic {
  --didactic-accent: #d8b36a;
  --didactic-cyan: #70d7e8;
  --didactic-ink: #f8fbff;
  --didactic-muted: rgba(235, 243, 249, 0.72);
  margin: clamp(3.25rem, 8vw, 6.5rem) 0;
}

.rb-didactic__surface {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  padding: clamp(1.35rem, 4vw, 2.75rem);
  border: 1px solid rgba(216, 179, 106, 0.3);
  border-radius: clamp(1.5rem, 4vw, 2.4rem);
  background:
    radial-gradient(circle at 8% 7%, rgba(112, 215, 232, 0.15), transparent 30%),
    radial-gradient(circle at 88% 92%, rgba(216, 179, 106, 0.14), transparent 34%),
    linear-gradient(145deg, #0e2030 0%, #07131f 54%, #0b1824 100%);
  box-shadow: 0 28px 75px rgba(2, 10, 17, 0.3);
}

.rb-didactic__surface::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  opacity: 0.28;
  background-image:
    linear-gradient(rgba(255,255,255,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.045) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: linear-gradient(to bottom, black, transparent 82%);
}

.rb-didactic__header {
  max-width: 48rem;
  margin-bottom: clamp(1.5rem, 4vw, 2.75rem);
}

.rb-didactic__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  margin-bottom: .85rem;
  color: var(--didactic-accent);
  font: 700 .7rem/1.2 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: .18em;
  text-transform: uppercase;
}

.rb-didactic__eyebrow::before {
  content: "";
  width: 1.6rem;
  height: 1px;
  background: currentColor;
}

.rb-didactic .rb-didactic__title {
  max-width: 19ch;
  margin: 0;
  color: #fff;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.65rem, 4.5vw, 3.25rem);
  font-weight: 500;
  line-height: 1.02;
  letter-spacing: -.035em;
}

.rb-didactic__canvas {
  position: relative;
  min-height: 29rem;
}

.rb-didactic__connectors {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.rb-didactic__connectors path,
.rb-didactic__connectors circle {
  fill: none;
  stroke: rgba(112, 215, 232, .44);
  stroke-width: 1.35;
  stroke-linecap: round;
  stroke-dasharray: 5 8;
  vector-effect: non-scaling-stroke;
}

.rb-didactic__connectors circle {
  fill: rgba(112, 215, 232, .06);
  stroke: rgba(216, 179, 106, .4);
  stroke-dasharray: none;
}

.rb-didactic__core {
  position: absolute;
  left: 50%;
  top: 50%;
  display: grid;
  width: 7.1rem;
  aspect-ratio: 1;
  place-items: center;
  transform: translate(-50%, -50%);
  border: 1px solid rgba(216, 179, 106, .55);
  border-radius: 50%;
  background: radial-gradient(circle at 35% 28%, rgba(216,179,106,.24), rgba(7,19,31,.96) 62%);
  box-shadow: 0 0 0 10px rgba(216,179,106,.04), 0 18px 45px rgba(0,0,0,.28);
}

.rb-didactic__core svg {
  width: 2.45rem;
  height: 2.45rem;
  fill: none;
  stroke: var(--didactic-accent);
  stroke-width: 1.65;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.rb-didactic__ideas {
  position: relative;
  z-index: 1;
  display: grid;
  min-height: 29rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.rb-didactic__idea {
  align-self: center;
  width: min(100%, 18rem);
  padding: 1rem 1.05rem 1.1rem;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 1.15rem;
  background: linear-gradient(145deg, rgba(255,255,255,.09), rgba(255,255,255,.035));
  box-shadow: inset 0 1px rgba(255,255,255,.08), 0 16px 32px rgba(0,0,0,.16);
  backdrop-filter: blur(12px);
}

.rb-didactic__idea:nth-child(2) { justify-self: end; }
.rb-didactic__idea:nth-child(3) { align-self: end; justify-self: center; }

.rb-didactic__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: .7rem;
}

.rb-didactic__number {
  color: rgba(255,255,255,.38);
  font: 600 .68rem/1 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: .08em;
}

.rb-didactic__label {
  color: var(--didactic-cyan);
  font: 700 .64rem/1.2 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: .13em;
  text-transform: uppercase;
}

.rb-didactic__idea strong {
  display: block;
  color: #fff;
  font-size: clamp(.92rem, 1.5vw, 1.06rem);
  font-weight: 600;
  line-height: 1.32;
}

.rb-didactic figcaption {
  max-width: 54rem;
  margin: .9rem auto 0;
  color: inherit;
  opacity: .68;
  font-size: .82rem;
  line-height: 1.5;
  text-align: center;
}

.rb-didactic--balance .rb-didactic__ideas,
.rb-didactic--continuum .rb-didactic__ideas,
.rb-didactic--bridge .rb-didactic__ideas {
  grid-template-columns: repeat(3, 1fr);
  align-items: center;
  gap: clamp(1rem, 4vw, 3rem);
}

.rb-didactic--balance .rb-didactic__idea,
.rb-didactic--continuum .rb-didactic__idea,
.rb-didactic--bridge .rb-didactic__idea {
  align-self: center;
  justify-self: center;
}

.rb-didactic--continuum .rb-didactic__core { top: 72%; }
.rb-didactic--continuum .rb-didactic__ideas { min-height: 23rem; }
.rb-didactic--continuum .rb-didactic__canvas { min-height: 23rem; }

.rb-didactic--layers .rb-didactic__ideas {
  grid-template-columns: minmax(0, 1fr);
  align-content: center;
  gap: .85rem;
  width: min(100%, 39rem);
  margin: 0 auto;
}

.rb-didactic--layers .rb-didactic__idea {
  align-self: auto;
  justify-self: stretch;
  width: auto;
  margin-inline: calc(var(--layer, 0) * 2.25rem);
}

.rb-didactic--layers .rb-didactic__idea:nth-child(1) { --layer: 2; }
.rb-didactic--layers .rb-didactic__idea:nth-child(2) { --layer: 1; }
.rb-didactic--layers .rb-didactic__idea:nth-child(3) { --layer: 0; }
.rb-didactic--layers .rb-didactic__core { left: calc(50% + 18rem); }

.rb-didactic--matrix .rb-didactic__ideas,
.rb-didactic--orbit .rb-didactic__ideas,
.rb-didactic--loop .rb-didactic__ideas {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  grid-template-rows: repeat(2, minmax(0, 1fr));
  column-gap: clamp(7rem, 18vw, 14rem);
}

.rb-didactic--matrix .rb-didactic__idea:nth-child(3) { grid-column: 1 / -1; }
.rb-didactic--orbit .rb-didactic__idea:nth-child(3) { grid-column: 1 / -1; }
.rb-didactic--loop .rb-didactic__idea:nth-child(3) { grid-column: 1 / -1; }

@media (hover: hover) {
  .rb-didactic__idea { transition: transform .28s ease, border-color .28s ease, background .28s ease; }
  .rb-didactic__idea:hover {
    transform: translateY(-4px);
    border-color: rgba(112,215,232,.36);
    background: linear-gradient(145deg, rgba(112,215,232,.12), rgba(255,255,255,.045));
  }
}

@media (max-width: 760px) {
  .rb-didactic__title { max-width: 100%; }
  .rb-didactic__canvas,
  .rb-didactic__ideas,
  .rb-didactic--continuum .rb-didactic__canvas,
  .rb-didactic--continuum .rb-didactic__ideas { min-height: 0; }
  .rb-didactic__connectors,
  .rb-didactic__core { display: none; }
  .rb-didactic__ideas,
  .rb-didactic--balance .rb-didactic__ideas,
  .rb-didactic--continuum .rb-didactic__ideas,
  .rb-didactic--bridge .rb-didactic__ideas,
  .rb-didactic--matrix .rb-didactic__ideas,
  .rb-didactic--orbit .rb-didactic__ideas,
  .rb-didactic--loop .rb-didactic__ideas,
  .rb-didactic--layers .rb-didactic__ideas {
    display: grid;
    grid-template-columns: 1fr;
    grid-template-rows: auto;
    gap: .8rem;
    width: 100%;
  }
  .rb-didactic__idea,
  .rb-didactic--layers .rb-didactic__idea,
  .rb-didactic--matrix .rb-didactic__idea:nth-child(3),
  .rb-didactic--orbit .rb-didactic__idea:nth-child(3),
  .rb-didactic--loop .rb-didactic__idea:nth-child(3) {
    grid-column: auto;
    align-self: auto;
    justify-self: stretch;
    width: auto;
    margin-inline: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .rb-didactic__idea { transition: none; }
}

@media print {
  .rb-didactic__surface {
    break-inside: avoid;
    box-shadow: none;
    print-color-adjust: exact;
    -webkit-print-color-adjust: exact;
  }
}