body {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 18px;  /* About_zemi와 일치시켜야 함 */
  color: #333;
  background-color: #ffffff;
}

.section__header h2 {
  font-size: 60px;
  color: #000000;
  font-weight: 700;
  margin-bottom: 10px;
}

.section__header hr {
  width: 600px;
  border: 2px solid #3f72af;
  margin: 10px 0;
}

/* 全体リスト */
.activity-list {
  display: flex;
  flex-direction: column;
  gap: 60px;
  max-width: 1100px;
  margin: 0 auto 60px;
  padding: 30px;
}

/* 左：写真 / 右：テキスト */
.activity-item {
  display: flex;
  gap: 40px;
  align-items: center;
  flex-wrap: nowrap;
}

/* 大きいイメージ　*/
.activity-photo,
.event-photo {
  width: 360px;
  height: 260px;
  object-fit: contain; 
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
  flex-shrink: 0;
  background-color: #f2f2f2; 
}

/* テキスト */
.activity-text {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 10px;
  flex: 1;
}

.activity-text h3 {
  font-size: 28px;
  color: #3f72af;
  margin: 0;
}

.activity-text p {
  font-size: 18px;
  line-height: 1.6;
  color: #333;
  margin: 0;
}

/* イベント項目 */
.activity-item.event {
  flex-direction: row;
  align-items: center;
}


/* レスポンシブ */
@media (max-width: 768px) {
  .activity-item {
    flex-direction: column;
    text-align: center;
  }

  .activity-photo,
  .event-photo {
    width: 90%;
    height: auto;
  }

  .activity-text {
    align-items: center;
  }

  .activity-text h3 {
    font-size: 22px;
  }

  .activity-text p {
    font-size: 16px;
  }
}