/* TOPICS セクション */
.topics-slider-section {
  padding: 60px 20px;
  background: #f9f9f9;
}

.topics-slider-section .section-title {
  text-align: center;
  font-size: 2rem;
  font-weight: bold;
  margin-bottom: 40px;
  position: relative;
}

.topics-slider-section .section-title::after {
  content: '';
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, #007bff, #00c6ff);
  display: block;
  margin: 10px auto 0;
  border-radius: 3px;
}

.topic-card {
  background: white;
  border-radius: 15px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
  padding: 20px;
  transition: all 0.3s ease;
  height: 100%;
}

.topic-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.topic-date {
  font-size: 0.9rem;
  color: #888;
  margin-bottom: 10px;
}

.topic-title {
  font-size: 1.1rem;
  font-weight: bold;
  color: #333;
  margin-bottom: 10px;
}

.topic-excerpt {
  font-size: 0.95rem;
  color: #555;
  margin-bottom: 15px;
}

.topic-link {
  display: inline-block;
  padding: 8px 15px;
  background: linear-gradient(90deg, #007bff, #00c6ff);
  color: white;
  border-radius: 30px;
  font-size: 0.9rem;
  text-decoration: none;
  transition: all 0.3s ease;
}

.topic-link:hover {
  background: linear-gradient(90deg, #0056b3, #0090cc);
}

/* Swiper のナビゲーション装飾 */
.swiper-button-next_,
.swiper-button-prev_ {
  color: #007bff;
}

.swiper-pagination-bullet-active {
  background: #007bff;
}

.swiper-button-prev::after,
.swiper-button-next::after {
  font-family: "Font Awesome 6 Free";
  font-weight: 900;
  font-size: 20px;
  color: #e41414;
}

.swiper-button-prev::after {
  content: "\f104"; /* fa-chevron-left */
}
.swiper-button-next::after {
  content: "\f105"; /* fa-chevron-right */
}