#blog {
  padding: 15rem 0 10rem;
  background-color: var(--white);
}

.blog-content {
  margin-top: 8rem;
}

.blog-post {
  max-width: 80rem;
  margin: 0 auto;
  background-color: var(--white);
  border-radius: 1rem;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
  overflow: hidden;
}

.post-header {
  padding: 4rem 4rem 2rem;
  border-bottom: 1px solid #e0e0e0;
}

.post-title {
  margin-bottom: 2rem;
}

.post-title span {
  font-size: 2.8rem;
  font-weight: 700;
  color: var(--black);
  line-height: 1.4;
}

.post-date {
  font-size: 1.4rem;
  color: #666;
  font-weight: 500;
}

.post-content {
  padding: 4rem;
  line-height: 1.8;
}

.post-content p {
  font-size: 1.8rem;
  color: var(--black);
  margin-bottom: 2.5rem;
  font-family: "NotoSansJP-Regular";
}

.post-content p:last-child {
  margin-bottom: 0;
}

.post-content strong {
  font-weight: 700;
  color: var(--black);
}

.signature {
  margin-top: 4rem;
  padding-top: 3rem;
  border-top: 1px solid #e0e0e0;
  text-align: right;
}

.signature p {
  font-size: 1.6rem;
  color: #666;
  line-height: 1.6;
}

/* グレーアウトスタイル */
.grayed-out {
  opacity: 0.6;
  color: #999 !important;
  text-decoration: line-through;
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
  #blog {
    padding: 12rem 0 8rem;
  }
  
  .blog-content {
    margin-top: 6rem;
  }
  
  .post-header {
    padding: 3rem 1rem 1.5rem;
  }
  
  .post-title span {
    font-size: 2.2rem;
  }
  
  .post-date {
    font-size: 1.2rem;
  }
  
  .post-content {
    padding: 3rem 1rem;
  }
  
  .post-content p {
    font-size: 1.4rem;
    margin-bottom: 2rem;
  }
  
  .signature {
    margin-top: 3rem;
    padding-top: 2rem;
  }
  
  .signature p {
    font-size: 1.4rem;
  }
}