/* AI NIIGATA content styles 06/10 */
.ain-post-card:not(.is-featured) .ain-post-card-excerpt {
  display: -webkit-box;
  overflow: hidden;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
}

.ain-post-card-more {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: 18px;
  border-top: 1px solid var(--ain-line);
  color: #2a6d7a;
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.ain-post-card-more b {
  font-size: 20px;
  font-weight: 400;
}

.ain-category-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.ain-category-card {
  position: relative;
  min-height: 350px;
  overflow: hidden;
  border-radius: 28px;
  color: #fff;
  background: var(--ain-navy);
  box-shadow: 0 18px 50px rgba(6, 31, 40, 0.12);
  isolation: isolate;
  transition: transform 0.35s ease, box-shadow 0.35s ease;
}

.ain-category-card:nth-child(4n + 1) { min-height: 430px; }

.ain-category-card:nth-child(5n + 2) { transform: translateY(26px); }

.ain-category-card:hover {
  transform: translateY(-7px);
  box-shadow: 0 30px 70px rgba(6, 31, 40, 0.2);
}

.ain-category-card:nth-child(5n + 2):hover { transform: translateY(19px); }

.ain-category-card > img,
.ain-category-card-shade {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.ain-category-card > img {
  z-index: -2;
  object-fit: cover;
  transition: transform 0.7s ease;
}

.ain-category-card:hover > img { transform: scale(1.055); }

.ain-category-card-shade {
  z-index: -1;
  background:
    linear-gradient(180deg, rgba(7, 24, 32, 0.12), rgba(7, 24, 32, 0.92)),
    linear-gradient(90deg, rgba(7, 24, 32, 0.34), transparent);
}