.crbls-indexing-section {
  width: 100%;
  max-width: 1180px;
  margin: 35px auto;
  padding: 0 18px;
  font-family: Arial, Helvetica, sans-serif;
  box-sizing: border-box;
}

.crbls-indexing-section,
.crbls-indexing-section * {
  box-sizing: border-box;
}

.crbls-indexing-title {
  background: #e8eef3;
  padding: 18px 26px;
  margin-bottom: 28px;
  border-left: 6px solid #005f8f;
}

.crbls-indexing-title h2 {
  margin: 0;
  color: #005f8f;
  font-size: 24px;
  font-weight: 800;
  letter-spacing: 2px;
  line-height: 1.2;
}

.crbls-indexing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px 26px;
}

.crbls-index-card {
  min-height: 145px;
  padding: 18px 14px 14px;
  background: #ffffff;
  border: 1px solid #cfdde8;
  border-radius: 18px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 11px;
  text-align: center;
  position: relative;
  overflow: hidden;
  transition: transform 0.32s ease, box-shadow 0.32s ease, border-color 0.32s ease;
}

.crbls-index-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0, 95, 143, 0.08), transparent 55%);
  opacity: 0;
  transition: opacity 0.32s ease;
}

.crbls-index-card::after {
  content: "";
  position: absolute;
  width: 52px;
  height: 3px;
  bottom: 0;
  left: 50%;
  background: #005f8f;
  border-radius: 20px 20px 0 0;
  transform: translateX(-50%) scaleX(0);
  transform-origin: center;
  transition: transform 0.32s ease;
}

.crbls-index-card:hover {
  transform: translateY(-6px);
  border-color: #9bc3dd;
  box-shadow: 0 14px 30px rgba(0, 95, 143, 0.12);
}

.crbls-index-card:hover::before {
  opacity: 1;
}

.crbls-index-card:hover::after {
  transform: translateX(-50%) scaleX(1);
}

.crbls-index-card a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  text-decoration: none;
  position: relative;
  z-index: 1;
}

.crbls-index-card img {
  display: block;
  width: auto;
  max-width: 130px;
  max-height: 70px;
  height: auto;
  object-fit: contain;
  position: relative;
  z-index: 1;
  transition: transform 0.32s ease, filter 0.32s ease;
}

.crbls-index-card:hover img {
  transform: scale(1.08);
  filter: saturate(1.08) contrast(1.04);
}

.crbls-index-card p {
  margin: 0;
  color: #1f2937;
  font-size: 13px;
  font-weight: 700;
  line-height: 1.25;
  position: relative;
  z-index: 1;
}

.crbls-wide-logo img {
  max-width: 170px;
  max-height: 62px;
}

/* Square and round logo control */
.crbls-index-card:nth-child(3) img,
.crbls-index-card:nth-child(4) img,
.crbls-index-card:nth-child(7) img,
.crbls-index-card:nth-child(12) img {
  max-width: 88px;
  max-height: 82px;
}

/* ResearchGate text/image adjustment */
.crbls-index-card:nth-child(13) img {
  max-width: 155px;
  max-height: 58px;
}

/* Responsive */
@media (max-width: 950px) {
  .crbls-indexing-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 680px) {
  .crbls-indexing-title {
    padding: 15px 20px;
  }

  .crbls-indexing-title h2 {
    font-size: 21px;
  }

  .crbls-indexing-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
  }

  .crbls-index-card {
    min-height: 130px;
  }

  .crbls-index-card img {
    max-width: 110px;
    max-height: 58px;
  }

  .crbls-wide-logo img {
    max-width: 135px;
  }
}

@media (max-width: 420px) {
  .crbls-indexing-grid {
    grid-template-columns: 1fr;
  }
}