.sec-container {
  text-align: left;
}

.cha-content-box {
  background-color: rgba(0, 0, 0, 0.5);
  padding: 30px;
  margin-bottom: 40px;
  border-radius: 5px;
}

.cha-area-description {
  font-size: 1.1rem;
  line-height: 1.8;
  margin-bottom: 20px;
  font-family: "Zen Old Mincho", sans-serif;
}

.cha-work-list {
  display: flex;
  flex-direction: column;
  gap: 60px;
  margin-bottom: 40px;
}

.cha-work-area {
  background-color: rgba(0, 0, 0, 0.5);
  padding: 30px;
  border-radius: 5px;
  display: flex;
  flex-direction: column;
  gap: 30px;
  font-family: "Zen Old Mincho", sans-serif;
  will-change: opacity, transform;
}

.cha-work-img {
  width: 100%;
  height: auto;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.cha-work-img img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

.cha-work-info {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.cha-work-name-group-2row {
  display: flex;
  justify-content: space-around;
}

.cha-work-name-group-2row-en {
  display: flex;
  justify-content: space-around;
  font-size: 1.8rem;
}

.cha-work-name-group-2row .cha-work-name {
  font-size: 18px;
}

.cha-work-name {
  font-size: 1.8rem;
  font-weight: 500;
  margin-bottom: 5px;
  line-height: 1.4;
}

.cha-work-name-group {
  margin-bottom: 15px;
}

.cha-year-product {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.9);
  margin-left: 0.8rem;
}

.cha-year-product-2row-en {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.9);
  margin-left: 4rem;
}

.cha-material {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 20px;
  margin-left: 0.8rem;
}

.cha-material-2row-en {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 20px;
  margin-left: 4rem;
}

.cha-work-caption-area {
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  padding-top: 20px;
}

.cha-work-caption-ja {
  font-size: 1rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.9);
}

.cha-work-credit {
  margin-top: 15px;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.7);
  font-style: italic;
}

/* アニメーション用 */
.cha-area-title,
.cha-area-description,
.cha-work-area {
  will-change: opacity, transform;
}

.no-js .cha-area-title,
.no-js .cha-area-description,
.no-js .cha-work-area {
  opacity: 1;
  transform: none;
}
/* アニメーション用 */

.btn-read-more {
  text-align: center;
  margin-top: 40px;
  margin-bottom: 60px;
}

.btn-read-more a {
  display: inline-block;
  padding: 15px 40px;
  background-color: rgba(0, 0, 0, 0.8);
  color: #fff;
  text-decoration: none;
  border-radius: 30px;
  font-size: 1.1rem;
  transition: all 0.3s ease;
}

.btn-read-more a:hover {
  background-color: rgba(160, 82, 45, 0.9);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

/* レスポンシブスタイル */
@media screen and (max-width: 991px) {
  .cha-work-area {
    padding: 25px;
  }
  
  .cha-work-name {
    font-size: 1.6rem;
  }
}

@media screen and (max-width: 768px) {
  .cha-content-box {
    padding: 20px;
  }
  
  .cha-area-description {
    font-size: 1rem;
  }
  
  .cha-work-list {
    gap: 40px;
  }
  
  .cha-work-area {
    padding: 20px;
    gap: 20px;
  }
  
  .cha-work-name {
    font-size: 1.4rem;
  }
  
  .cha-year-product,
  .cha-material {
    font-size: 1rem;
  }
  
  .cha-work-caption-ja {
    font-size: 0.95rem;
  }
  
  .btn-read-more a {
    padding: 12px 30px;
    font-size: 1rem;
  }
}

@media screen and (max-width: 479px) {
  .cha-content-box {
    padding: 15px;
  }
  
  .cha-area-description {
    font-size: 0.95rem;
  }
  
  .cha-work-list {
    gap: 30px;
  }
  
  .cha-work-area {
    padding: 15px;
    gap: 15px;
  }
  
  .cha-work-name {
    font-size: 1.2rem;
  }
  
  .cha-year-product,
  .cha-material {
    font-size: 0.9rem;
  }
  
  .cha-work-caption-area {
    margin-top: 15px;
    padding-top: 15px;
  }
  
  .cha-work-caption-ja {
    font-size: 0.9rem;
    line-height: 1.6;
  }
  
  .btn-read-more a {
    padding: 10px 25px;
    font-size: 0.95rem;
  }
}