.band--diagramas {
  background: radial-gradient(
      900px 220px at 100% 0%,
      #fff7e0 10%,
      transparent 60%
    ),
    linear-gradient(180deg, #fff 0%, #fffaf0 100%);
}
.band--diagramas .section-title {
  margin-bottom: 0.5rem;
}
.band--diagramas .diag-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}
.band--diagramas .diag {
  margin: 0;
  background: #fff;
  border: 1px solid #eef1f5;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: var(--shadow-1);
}
.band--diagramas .diag__link {
  position: relative;
  display: block;
  aspect-ratio: 4/3;
  overflow: hidden;
  background: #f6f7fb;
}
.band--diagramas .diag__link img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.25s, filter 0.25s;
}
.band--diagramas .diag__link::after {
  content: "";
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background: radial-gradient(rgba(0, 0, 0, 0) 40%, rgba(0, 0, 0, 0.18) 100%);
  opacity: 0;
  transition: opacity 0.2s;
}
.band--diagramas .diag__link::before {
  content: "";
  position: absolute;
  inset: auto auto 10px 10px;
  width: 40px;
  height: 40px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.2s, transform 0.2s;
  -webkit-mask: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M15.5 14h-.79l-.28-.27a6.471 6.471 0 0 0 1.57-4.23 6.5 6.5 0 1 0-6.5 6.5 6.471 6.471 0 0 0 4.23-1.57l.27.28v.79l5 4.99L20.49 19l-4.99-5Zm-6 0C7.01 14 5 11.99 5 9.5S7.01 5 9.5 5 14 7.01 14 9.5 11.99 14 9.5 14Z"/></svg>')
    center/22px 22px no-repeat;
  mask: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M15.5 14h-.79l-.28-.27a6.471 6.471 0 0 0 1.57-4.23 6.5 6.5 0 1 0-6.5 6.5 6.471 6.471 0 0 0 4.23-1.57l.27.28v.79l5 4.99L20.49 19l-4.99-5Zm-6 0C7.01 14 5 11.99 5 9.5S7.01 5 9.5 5 14 7.01 14 9.5 11.99 14 9.5 14Z"/></svg>')
    center/22px 22px no-repeat;
}
.band--diagramas .diag__link:hover img,
.band--diagramas .diag__link:focus img {
  transform: scale(1.03);
  filter: saturate(1.02);
}
.band--diagramas .diag__link:hover::after,
.band--diagramas .diag__link:focus::after {
  opacity: 1;
}
.band--diagramas .diag__link:hover::before,
.band--diagramas .diag__link:focus::before {
  opacity: 1;
  transform: translateY(0);
}
.band--diagramas .diag__link:focus-visible {
  outline: 3px solid var(--cecns-gold);
  outline-offset: 2px;
}
.band--diagramas .diag figcaption {
  padding: 0.65rem;
  font-size: 0.92rem;
  color: #0f172a;
  background: #fafaf9;
  border-top: 1px solid #eef1f5;
}
@media (prefers-reduced-motion: reduce) {
  .band--diagramas .diag__link img,
  .band--diagramas .diag__link::after,
  .band--diagramas .diag__link::before {
    transition: none;
  }
}

/* ===== Mobile carousel (≤ 700px) ===== */
@media (max-width: 700px) {
  .band--diagramas .diag-grid {
    display: flex;
    gap: 0.8rem;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 0.25rem; /* evita ocultar la sombra por el scrollbar */
  }
  .band--diagramas .diag {
    flex: 0 0 80%;
    scroll-snap-align: start;
  }
  /* opcional: primera y última con margen-respiro */
  .band--diagramas .diag:first-child {
    margin-left: 0.25rem;
  }
  .band--diagramas .diag:last-child {
    margin-right: 0.25rem;
  }
}