/* DEI Matrix — dark coordinate system */
#dei-matrix {
  --dei-ink: var(--color-mba-dark-blue);
  --dei-red: var(--color-mba-red);
  --dei-blue: var(--color-mba-blue);
  --dei-warm-white: var(--color-warm-white);
  --dei-rule: rgba(245, 240, 235, 0.2);
  position: relative;
  overflow: hidden;
  background: var(--dei-ink);
  color: var(--dei-warm-white);
}

#dei-matrix::before {
  position: absolute;
  top: -14rem;
  left: -12rem;
  width: min(44vw, 36rem);
  aspect-ratio: 1;
  border: 1px solid rgba(245, 240, 235, 0.08);
  border-radius: 50%;
  content: "";
  pointer-events: none;
}

#dei-matrix .container {
  position: relative;
  z-index: 1;
}

#dei-matrix .section-label::before {
  background: var(--dei-red);
}

#dei-matrix .section-label span {
  color: rgba(245, 240, 235, 0.76);
}

#dei-matrix .deim__intro {
  width: min(100%, 48rem);
  margin-bottom: clamp(2.75rem, 5vw, 5rem);
}

#dei-matrix .deim__heading {
  max-width: 39rem;
  margin: 0;
  color: var(--dei-warm-white);
}

#dei-matrix .deim__heading-line {
  display: block;
}

#dei-matrix .deim__description {
  margin: 1.35rem 0 0;
}

#dei-matrix .deim__matrix-panel {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border: 1px solid rgba(245, 240, 235, 0.24);
  background: linear-gradient(135deg, rgba(15, 41, 131, 0.24), rgba(7, 20, 68, 0.92) 48%, rgba(0, 0, 0, 0.2));
}

#dei-matrix .deim__matrix-grid {
  position: absolute;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(90deg, rgba(245, 240, 235, 0.09) 1px, transparent 1px),
    linear-gradient(0deg, rgba(245, 240, 235, 0.09) 1px, transparent 1px);
  background-size: 25% 100%, 100% 33.333%;
  pointer-events: none;
}

#dei-matrix .deim__axis {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 25%;
  z-index: -1;
  width: 1px;
  background: linear-gradient(180deg, transparent 0%, rgba(178, 2, 2, 0.16) 10%, rgba(178, 2, 2, 0.78) 48%, rgba(178, 2, 2, 0.16) 90%, transparent 100%);
  pointer-events: none;
}

#dei-matrix .deim__rows {
  position: relative;
  z-index: 1;
  margin: 0;
  padding: 0;
  list-style: none;
}

#dei-matrix .deim__row {
  border-top: 1px solid var(--dei-rule);
}

#dei-matrix .deim__row:first-child {
  border-top: 0;
}

#dei-matrix .deim__row-inner {
  display: grid;
  grid-template-columns: minmax(9rem, 0.28fr) minmax(0, 1fr) minmax(13rem, 0.42fr);
  gap: clamp(1.5rem, 4vw, 4.5rem);
  align-items: center;
  min-height: 10.5rem;
  padding: 1.65rem clamp(1.35rem, 3.5vw, 3.5rem);
}

#dei-matrix .deim__row-marker {
  align-self: stretch;
  display: flex;
  align-items: center;
}

#dei-matrix .deim__row-letter {
  color: transparent;
  font-family: var(--font-display);
  font-size: clamp(4.5rem, 8vw, 8rem);
  font-weight: var(--fw-medium);
  letter-spacing: -0.08em;
  line-height: 0.72;
  -webkit-text-stroke: 1px rgba(245, 240, 235, 0.34);
}

#dei-matrix .deim__row-main {
  max-width: 35rem;
}

#dei-matrix .deim__row-heading {
  margin: 0;
  color: var(--dei-warm-white);
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 2.1vw, 2.15rem);
  font-weight: var(--fw-medium);
  letter-spacing: -0.025em;
  line-height: 1.05;
}

#dei-matrix .deim__row-definition {
  margin: 0.8rem 0 0;
  color: rgba(245, 240, 235, 0.72);
  font-family: var(--font-body);
  line-height: 1.75;
}

#dei-matrix .deim__row-practice {
  max-width: 15rem;
  margin: 0;
  padding-left: 1.15rem;
  border-left: 1px solid rgba(178, 2, 2, 0.72);
}

#dei-matrix .deim__matrix-panel {
  border-radius: 2px;
  box-shadow: 0 1.75rem 4rem rgba(0, 0, 0, 0.18);
}

#dei-matrix .deim__row:nth-child(even) {
  background: rgba(245, 240, 235, 0.025);
}

#dei-matrix .deim__row-main,
#dei-matrix .deim__row-practice {
  min-width: 0;
  overflow-wrap: anywhere;
}

@media (max-width: 1100px) {
  #dei-matrix .deim__row-inner {
    grid-template-columns: minmax(7rem, 0.24fr) minmax(0, 1fr) minmax(10rem, 0.35fr);
    gap: clamp(1.25rem, 3vw, 2.75rem);
    padding-right: 1.75rem;
    padding-left: 1.75rem;
  }

  #dei-matrix .deim__row-definition {
    line-height: 1.65;
  }
}

@media (max-width: 760px) {
  #dei-matrix::before {
    top: -8rem;
    left: -14rem;
    width: 28rem;
  }

  #dei-matrix .deim__intro {
    margin-bottom: 2.75rem;
  }

  #dei-matrix .deim__description {
    font-size: 0.92rem;
  }

  #dei-matrix .deim__matrix-grid {
    background-size: 50% 100%, 100% 20%;
  }

  #dei-matrix .deim__axis {
    left: 1.15rem;
  }

  #dei-matrix .deim__row-inner {
    grid-template-columns: 4.25rem minmax(0, 1fr);
    gap: 1rem;
    align-items: start;
    min-height: 0;
    padding: 1.5rem 1.25rem;
  }

  #dei-matrix .deim__row-marker {
    align-items: flex-start;
    padding-top: 0.2rem;
  }

  #dei-matrix .deim__row-letter {
    font-size: clamp(3.25rem, 15vw, 4.75rem);
  }

  #dei-matrix .deim__row-main {
    max-width: none;
  }

  #dei-matrix .deim__row-heading {
    font-size: 1.45rem;
  }

  #dei-matrix .deim__row-definition {
    font-size: 0.82rem;
    line-height: 1.65;
  }

  #dei-matrix .deim__row-practice {
    grid-column: 2;
    max-width: none;
    margin-top: 0.85rem;
    padding-left: 0.9rem;
    font-size: 1.05rem;
  }
}

@media (max-width: 480px) {
  #dei-matrix .deim__row-inner {
    grid-template-columns: 3.5rem minmax(0, 1fr);
    gap: 0.85rem;
    padding: 1.35rem 1rem;
  }

  #dei-matrix .deim__axis {
    left: 0.9rem;
  }

  #dei-matrix .deim__row-letter {
    font-size: 3.4rem;
  }

  #dei-matrix .deim__row-definition {
    font-size: 0.78rem;
  }

  #dei-matrix .deim__row-practice {
    font-size: 0.98rem;
  }
}

@keyframes deim-fade-up {
  from {
    opacity: 0;
    transform: translateY(1rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes deim-axis-in {
  from {
    opacity: 0;
    transform: scaleY(0);
  }
  to {
    opacity: 1;
    transform: scaleY(1);
  }
}

#dei-matrix .deim__intro,
#dei-matrix .deim__matrix-panel,
#dei-matrix .deim__row {
  animation: deim-fade-up 0.8s cubic-bezier(0.22, 1, 0.36, 1) both;
}

#dei-matrix .deim__intro {
  animation-delay: 0.04s;
}

#dei-matrix .deim__matrix-panel {
  animation-delay: 0.14s;
}

#dei-matrix .deim__row:nth-child(1) {
  animation-delay: 0.2s;
}

#dei-matrix .deim__row:nth-child(2) {
  animation-delay: 0.29s;
}

#dei-matrix .deim__row:nth-child(3) {
  animation-delay: 0.38s;
}

#dei-matrix .deim__axis {
  transform-origin: center top;
  animation: deim-axis-in 0.9s cubic-bezier(0.22, 1, 0.36, 1) 0.22s both;
}

@media (prefers-reduced-motion: reduce) {
  #dei-matrix *,
  #dei-matrix *::before,
  #dei-matrix *::after {
    animation: none !important;
    scroll-behavior: auto !important;
    transition: none !important;
    transform: none !important;
  }
}