/* ── Icono 'B' — heroes de subpáginas y secciones CTA oscuras ── */
.bg-zinc-800.pt-28,
.bg-zinc-900.py-20,
#arquitectos,
.arq-sep {
  position: relative;
  overflow: hidden;
}

.bg-zinc-800.pt-28::before,
.bg-zinc-900.py-20::before,
#arquitectos::before,
.arch-card::before,
.arq-sep::before {
  content: '';
  position: absolute;
  inset: 0;
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  background-size: 80px 80px;
  background-repeat: repeat;
  filter: grayscale(1) invert(1) blur(2px);
  opacity: 0.1;
  transition: opacity 0.5s ease;
  pointer-events: none;
  z-index: 0;
}

/* Para profesionales: spotlight cursor — patrón B visible solo alrededor del cursor */
#arquitectos {
  --mx: -400px;
  --my: -400px;
}
#arquitectos::before {
  opacity: 0.22;
  transition: none;
  -webkit-mask-image: radial-gradient(circle 160px at var(--mx) var(--my), black 0%, transparent 100%);
  mask-image:         radial-gradient(circle 160px at var(--mx) var(--my), black 0%, transparent 100%);
}

/* Spotlight en las tarjetas internas */
.arch-card {
  position: relative;
  overflow: hidden;
}
.arch-card::before {
  opacity: 0.22;
  transition: none;
  -webkit-mask-image: radial-gradient(circle 160px at var(--cx, -400px) var(--cy, -400px), black 0%, transparent 100%);
  mask-image:         radial-gradient(circle 160px at var(--cx, -400px) var(--cy, -400px), black 0%, transparent 100%);
}
.arch-card > * {
  position: relative;
  z-index: 1;
}

.bg-zinc-800.pt-28 > div,
.bg-zinc-900.py-20 > div,
#arquitectos > div {
  position: relative;
  z-index: 1;
}

/* Spotlight en las diagonales brick-sep del bloque para profesionales */
.arq-sep::before {
  z-index: 1;
  opacity: 0.22;
  transition: none;
  -webkit-mask-image: radial-gradient(circle 160px at var(--bsx, -400px) var(--bsy, -400px), black 0%, transparent 100%);
  mask-image:         radial-gradient(circle 160px at var(--bsx, -400px) var(--bsy, -400px), black 0%, transparent 100%);
}
/* Clip pattern to the dark triangle only */
.arq-sep-top::before { clip-path: polygon(0% 100%, 100% 0%, 100% 100%); }
.arq-sep-bot::before { clip-path: polygon(0% 0%,   100% 0%, 0%   100%); }
.arq-sep > svg {
  display: block;
  position: relative;
  z-index: 0;
}