/* ==========================================================
   COLUMN記事ページ用スタイル（左寄せ＋余白調整）
========================================================== */

.single-column {
  font-family: "Noto Sans JP", "Hiragino Sans", "Helvetica Neue", Arial, sans-serif;
  color: #333;
  line-height: 1.9;
  font-size: 16px;
}

/* ----------------------------
   タイトルエリア
---------------------------- */
.column-title-area {
  max-width: 960px;
  margin: 0 auto;
  padding: 60px 20px 20px;
  text-align: left;
  background: #fff;
}

.column-heading {
  margin-bottom: 10px;
}

.column-label {
  font-size: 26px;
  font-weight: 700;
  color: #222;
  margin-bottom: 2px;
}

.column-sub {
  display: block;
  font-size: 16px;
  font-weight: 600;
  color: #999;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 30px;
}

/* タイトル本体 */
.column-main-title {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.6;
  color: #222;
  margin: 0;
  max-width: 960px;
}

.article-date {
  display: block;
  font-size: 14px;
  color: #888;
  margin-top: 10px;
}

/* ----------------------------
   アイキャッチ画像（余白最適化）
---------------------------- */
.column-eyecatch {
  max-width: 960px;
  margin: 0 auto 60px;
  border-radius: 8px;
  overflow: hidden;
  padding: 0 !important;
  text-align: center;
}

.column-eyecatch img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
  margin: 0;
}

/* ----------------------------
   記事本文
---------------------------- */
.article-content {
  max-width: 800px;
  margin: 0 auto 100px;
  padding: 0 20px;
  font-size: 17px;
}

/* H2（背景オレンジ・白文字） */
.article-content h2 {
  background-color: #f25a07;
  color: #fff;
  padding: 18px 24px;
  border-radius: 4px;
  font-size: 28px;
  font-weight: 700;
  margin: 80px 0 30px;
  letter-spacing: 0.03em;
}

/* H3（太線・全幅） */
.article-content h3 {
  font-size: 24px;
  font-weight: 700;
  color: #222;
  border-bottom: 5px solid #f47a20;
  padding-bottom: 10px;
  margin: 50px 0 25px;
  width: 100%;
}

/* 段落・画像・引用 */
.article-content p {
  margin-bottom: 1.8em;
  font-size: 17px;
  line-height: 1.9;
}

.article-content img {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
  margin: 30px 0 50px;
}

.article-content blockquote {
  background: #fff7f2;
  border-left: 5px solid #f47a20;
  padding: 20px 25px;
  font-size: 15.5px;
  color: #444;
  border-radius: 4px;
  margin: 40px 0;
}

/* 区切り線 */
.article-content hr {
  border: none;
  border-top: 3px solid #f47a20;
  margin: 70px auto;
  width: 80%;
}

/* 目次（RTOC） */
#rto_contents {
  background: #fff;
  border: 1px solid #eee;
  padding: 25px;
  margin: 40px auto;
  border-radius: 4px;
  max-width: 800px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.04);
}

#rto_contents h2 {
  font-size: 18px;
  color: #f47a20;
  margin-bottom: 15px;
  font-weight: 700;
}

/* ===============================
   COLUMN関連記事（最新のコラム）
   ※ CASEセクションと統一デザイン
=============================== */

.column-related {
  background: #fff7f2;
  padding: 60px 0;
}

.column-related-inner {
  max-width: 1100px;
  margin: auto;
  padding: 0 20px;
}

/* ===== タイトル ===== */

.column-related-heading {
  margin-bottom: 24px;
  text-align: left;
}

.column-related-heading .en {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: .04em;
  color: #333;
  margin: 0;
}

.column-related-heading .en span {
  color: #ff5a00;
}

.column-related-heading .jp {
  color: #ff5a00;
  font-size: 18px;
  font-weight: 700;
  margin-top: 4px;
}

/* ===== グリッド ===== */

.column-related-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

/* ===== カード ===== */

.column-related-item a {
  display: block;
  height: 100%;
  background: #fff;
  border-radius: 8px;
  overflow: hidden;
  text-decoration: none;
  color: #333;
  box-shadow: 0 4px 12px rgba(0, 0, 0, .04);
  transition: all 0.2s ease;
}

.column-related-item a:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, .08);
}

/* サムネイル */
.column-related-thumb {
  width: 100%;
  aspect-ratio: 5/3;
  overflow: hidden;
}

.column-related-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 日付 */
.column-related-date {
  display: block;
  margin: 8px 10px 4px;
  font-size: 14px;
  color: #666;
}

/* タイトル固定行 */
.column-related-title {
  margin: 0 10px 14px;
  font-size: 16px;
  line-height: 1.6;
  font-weight: 600;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  min-height: 2.8em;
}

/* ===== もっと見るリンク ===== */

.column-related-more {
  text-align: center;
  margin-top: 32px;
}

.column-related-more a {
  color: #ff5a00;
  font-weight: 700;
  text-decoration: none;
}

.column-related-more a:hover {
  text-decoration: underline;
}


/* ----------------------------
   スマホ最適化
---------------------------- */
@media (max-width: 768px) {
  .column-title-area {
    padding: 40px 16px 10px;
  }
  .column-label {
    font-size: 22px;
  }
  .column-sub {
    font-size: 14px;
  }
  .column-main-title {
    font-size: 26px;
  }
  .article-content {
    font-size: 15px;
  }
  .article-content h2 {
    font-size: 22px;
  }
  .article-content h3 {
    font-size: 19px;
  }
  .column-related-list {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }
  .column-related-heading .en {
    font-size: 24px;
  }
  .column-related-heading .jp {
    font-size: 15px;
  }
  .column-related-title {
    font-size: 15px;
  }
}

/* =========================================
   Emanonテーマの自動.l-container余白削除
   （タイトル直上の空白完全除去）
========================================= */
.single-column .l-main > .l-container {
  padding-top: 0 !important;
  padding-bottom: 0 !important;
  margin: 0 !important;
}

.single-column .l-main > .l-container > .l-content {
  padding-top: 0 !important;
  margin-top: 0 !important;
}

/* .l-containerが高さだけ持つ場合の保険 */
.single-column .l-container:empty {
  display: none !important;
  height: 0 !important;
  margin: 0 !important;
  padding: 0 !important;
}