* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

.hero-image {
  width: 100%;
  background-color: #666;
  background-image: var(--hero-pc);
  background-size: cover;
  background-position: center;
  margin: 0 auto 30px;
  aspect-ratio: 1024 / 379;
}

@supports not (aspect-ratio: 1) {
  .hero-image {
    height: calc(100vw * (379 / 1024));
    max-height: 430px;
  }
}

.nav-tags {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  width: 796px;
}
/* カテゴリーボタン */
.category-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 20px;
  align-items: center;
}

.category-btn {
  display: inline-flex;
  background: white;
  border: 1px solid #ddd;
  padding: 8px 16px 8px 36px;
  text-decoration: none;
  color: #a68a6b;
  border-radius: 10px;
  font-size: 0.9rem;
  cursor: pointer;
  background-repeat: no-repeat;
  background-position: 12px center;
  background-size: 18px 18px;
  transition: background-color 0.3s, color 0.3s;
}

.category-btn:hover,
.category-btn.active {
  background: #a68a6b;
  color: white;
  border-color: #a68a6b;
  transform: scale(1.05);
  background-repeat: no-repeat;
  background-position: 12px center;
  background-size: 18px 18px;
}

/* カテゴリ別のブラウンアイコン */
.category-btn[data-category="beginner"] {
  background-image: url("../images/beginner_brown.svg");
}
.category-btn[data-category="care"] {
  background-image: url("../images/home_brown.svg");
}
.category-btn[data-category="food"] {
  background-image: url("../images/snack_brown.svg");
}
.category-btn[data-category="goods"] {
  background-image: url("../images/toy_brown.svg");
}
.category-btn[data-category="experience"] {
  background-image: url("../images/experience_brown.svg");
}
.category-btn[data-category="outdoor"] {
  background-image: url("../images/activity_brown.svg");
}
.category-btn[data-category="season"] {
  background-image: url("../images/season_brown.svg");
}

/* ホバー・アクティブ時の白アイコン */
.category-btn[data-category="beginner"]:hover,
.category-btn[data-category="beginner"].active {
  background-image: url("../images/beginner.svg");
}
.category-btn[data-category="care"]:hover,
.category-btn[data-category="care"].active {
  background-image: url("../images/home.svg");
}
.category-btn[data-category="food"]:hover,
.category-btn[data-category="food"].active {
  background-image: url("../images/snack.svg");
}
.category-btn[data-category="goods"]:hover,
.category-btn[data-category="goods"].active {
  background-image: url("../images/toy.svg");
}
.category-btn[data-category="experience"]:hover,
.category-btn[data-category="experience"].active {
  background-image: url("../images/experience.svg");
}
.category-btn[data-category="outdoor"]:hover,
.category-btn[data-category="outdoor"].active {
  background-image: url("../images/activity_white.svg");
}
.category-btn[data-category="season"]:hover,
.category-btn[data-category="season"].active {
  background-image: url("../images/season.svg");
}

/* メインコンテンツ */

/* 記事グリッド */
.articles-grid {
  display: grid;
  /* grid-template-columns: repeat(3, minmax(220px, 1fr)); */
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 30px;
}

.article-card {
  width: 220px;
  background: white;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
}

.article-card:hover {
  transform: translateY(-5px);
}

.article-image {
  width: 220px;
  height: 147px;
  background: linear-gradient(45deg, #e0e0e0, #f0f0f0);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 48px;
  color: #999;
}

.article-date {
  color: #666;
  font-size: 12px;
  margin-bottom: 10px;
}

.article-title {
  font-size: 0.9rem;
  font-weight: bold;
  margin-bottom: 10px;
  color: #333;
}

.article-excerpt {
  color: #666;
  font-size: 0.8rem;
  line-height: 1.6;
}

/* レスポンシブ */

@media (max-width: 1385px) {
  .nav-tags {
    width: 100%;
  }
}
@media (max-width: 1145px) {
  .main-content {
    grid-template-columns: 1fr;
  }
  .articles-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px;
  }
}

@media (max-width: 970px) {
  .articles-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .articles-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 530px) {
  .articles-grid {
    grid-template-columns: repeat(1, minmax(0, 1fr));
  }
  .article-card {
    margin: 0 auto;
  }
  .hero-image {
    background-image: var(--hero-sp);
    aspect-ratio: 650 / 325; /* スマホ画像の比率に合わせる */
    margin: 0 auto 12px;
  }
  .article-card {
    margin: 0 auto;
    width: 100%;
  }
  .category-buttons {
    gap: 3px;
    margin-bottom: 6px;
  }

  .section-title {
    font-size: 1.2rem;
    margin-bottom: 5px;
    padding-bottom: 4px;
  }

  .nav-tags {
    gap: 2px 4px;
    margin-bottom: 2px;
    width: 100%;
  }

  .category-btn {
    gap: 4px;
    padding: 4px 8px 4px 18px;
    border-radius: 6px;
    border: 1px solid #ddd;
    font-size: 0.7rem;
    text-decoration: none;
    background-position: 6px center;
    background-size: 10px 10px;
  }

  .category-btn:hover,
  .category-btn.active {
    transform: scale(1.05);
    font-size: 0.7rem;
    background-position: 5px center;
    background-size: 12px 12px;
  }
}

/* カテゴリー別コンテンツの表示制御 */
.category-content {
  display: none;
}

.category-content.active {
  display: block;
}