@charset "UTF-8";
/* ===== 汎用コンテナ ===== */
.container {
  max-width: calc(1100px + 80px);
  margin: 0 auto;
  padding: 0 40px;
}
@media screen and (max-width: 768px) {
  .container {
    padding: 0 20px;
  }
}

/* ===== 投稿詳細 ===== */
.section-single {
  padding: 120px 0 200px;
}
@media screen and (max-width: 768px) {
  .section-single {
    padding: 80px 0 140px;
  }
}
@media screen and (max-width: 480px) {
  .section-single {
    padding: 60px 0 100px;
  }
}

.single-article {
  max-width: 800px;
  margin: 0 auto;
}

.single-header {
  margin-bottom: 48px;
  padding-bottom: 32px;
  border-bottom: 1px solid #e0e0e0;
}
@media screen and (max-width: 768px) {
  .single-header {
    margin-bottom: 36px;
    padding-bottom: 24px;
  }
}

.single-date {
  display: block;
  font-family: "Outfit", sans-serif;
  font-size: 14px;
  color: #999;
  margin-bottom: 12px;
}
@media screen and (max-width: 768px) {
  .single-date {
    font-size: 13px;
  }
}

.single-title {
  font-size: 26px;
  font-weight: 500;
  line-height: 1.6;
}
@media screen and (max-width: 768px) {
  .single-title {
    font-size: 22px;
  }
}
@media screen and (max-width: 480px) {
  .single-title {
    font-size: 20px;
  }
}

/* ===== 投稿本文 ===== */
.single-content {
  font-size: 16px;
  line-height: 2;
  color: #555;
  margin-bottom: 80px;
}
.single-content h2 {
  font-size: 22px;
  font-weight: 500;
  margin: 48px 0 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid #34C8DC;
}
@media screen and (max-width: 768px) {
  .single-content h2 {
    font-size: 20px;
  }
}
.single-content h3 {
  font-size: 19px;
  font-weight: 500;
  margin: 40px 0 16px;
}
@media screen and (max-width: 768px) {
  .single-content h3 {
    font-size: 17px;
  }
}
.single-content p {
  margin-bottom: 24px;
}
.single-content p:last-child {
  margin-bottom: 0;
}
.single-content img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 32px 0;
}
.single-content ul, .single-content ol {
  margin: 24px 0;
  padding-left: 24px;
}
.single-content ul li, .single-content ol li {
  margin-bottom: 8px;
}
.single-content a {
  color: #34C8DC;
  text-decoration: underline;
}
.single-content blockquote {
  margin: 32px 0;
  padding: 20px 24px;
  border-left: 4px solid #34C8DC;
  background: #f9f9f9;
  font-style: italic;
}
@media screen and (max-width: 768px) {
  .single-content {
    font-size: 15px;
    margin-bottom: 60px;
  }
}
@media screen and (max-width: 480px) {
  .single-content {
    font-size: 14px;
  }
}

/* ===== 一覧に戻る ===== */
.single-back {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.single-back-link {
  display: inline-block;
  padding: 14px 48px;
  border: 1px solid #333;
  font-size: 15px;
  font-weight: 500;
  transition: background 0.3s ease, color 0.3s ease;
}
.single-back-link:hover {
  background: #333;
  color: #fff;
}
@media screen and (max-width: 768px) {
  .single-back-link {
    font-size: 14px;
    padding: 12px 40px;
  }
}