/* ===== grammar-v2.css — 英文法講座 共通デザイン ===== */

/* --- 導入ブロック --- */
.g2-intro{background:#f0f5fa;border-left:4px solid #0056b3;padding:20px 24px;margin-bottom:36px;border-radius:0 8px 8px 0;font-size:.93rem;line-height:1.8;color:#333}
.g2-intro ul{margin:8px 0 0 1.2em;padding:0}
.g2-intro li{margin-bottom:4px}

/* --- テーブル共通ラップ --- */
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:16px 0 28px}

/* --- 代名詞・文法テーブル --- */
.grammar-table{width:100%;border-collapse:collapse;font-size:.9rem;min-width:400px}
.grammar-table th{background:#001f4d;color:#fff;padding:10px 10px;font-weight:600;text-align:center;font-size:.84rem}
.grammar-table th:first-child{border-radius:6px 0 0 0}
.grammar-table th:last-child{border-radius:0 6px 0 0}
.grammar-table .sub-header{background:#e8edf3;color:#555;font-size:.78rem;padding:5px 8px;text-align:center}
.grammar-table td{padding:9px 10px;text-align:center;border-bottom:1px solid #e0e0e0}
.grammar-table td:first-child{background:#f7f9fc;font-weight:600;color:#001f4d;text-align:left;padding-left:12px}
.grammar-table tbody tr:hover{background:#f5f8ff}

/* --- ルールまとめボックス --- */
.rules-summary{background:#fffaf0;border:2px solid #d4a017;border-radius:10px;padding:20px 24px;margin:28px 0}
.rules-summary.blue{border-color:#0056b3;background:#f5f8ff}
.rules-summary h3{margin:0 0 14px;font-size:1.05rem;color:#8b6914}
.rules-summary.blue h3{color:#0056b3}
.rules-summary ol,.rules-summary ul{margin:0;padding:0 0 0 .5em;list-style:none}
.rules-summary li{padding:6px 0 6px .5em;font-size:.9rem;line-height:1.7;border-bottom:1px dashed #e8d8a8}
.rules-summary.blue li{border-bottom-color:#d0dff0}
.rules-summary li:last-child{border-bottom:none}

/* --- ルール見出し --- */
.rule-heading{background:#001f4d;color:#fff;display:inline-block;padding:6px 18px;border-radius:6px;font-size:.92rem;font-weight:700;margin:36px 0 16px}
.rule-heading.green{background:#2e8b57}
.rule-heading.orange{background:#c67b1a}

/* --- ルール引用ボックス --- */
.rule-box{background:#f7f9fc;border-left:4px solid #0056b3;padding:14px 18px;margin:12px 0 20px;font-size:.9rem;font-weight:600;color:#001f4d;line-height:1.7;border-radius:0 6px 6px 0}

/* --- 重要ポイント --- */
.key-point{background:#fff8e6;border:1px solid #e8d08a;border-radius:8px;padding:14px 18px;margin:16px 0 20px;font-size:.9rem;line-height:1.7}
.key-point strong{color:#8b6914}

/* --- 例文テーブル --- */
.ex-table{width:100%;border-collapse:collapse;margin:12px 0;font-size:.95rem}
.ex-table td{padding:10px 12px;border:1px solid #ddd;vertical-align:middle}
.ex-table .ex-num{width:40px;text-align:center;font-weight:700;color:#0056b3;background:#f5f8ff}
.ex-table .ex-jp{color:#333}
.ex-table .ex-en{font-weight:700;color:#001f4d;letter-spacing:.02em}
.ex-table .ex-placeholder{color:#bbb;font-weight:400}

/* --- 正解ボックス --- */
.answer-box{background:#f0faf0;border:2px solid #2e8b57;border-radius:8px;padding:14px 18px;margin:16px 0 24px;font-size:.95rem}
.answer-box .answer-label{display:inline-block;background:#2e8b57;color:#fff;font-size:.75rem;font-weight:700;padding:2px 10px;border-radius:4px;margin-bottom:8px}
.answer-box .answer-content{font-weight:700;color:#1a5c38;font-size:1.05rem}
.answer-box .answer-jp{font-size:.85rem;color:#555;font-weight:400;margin-right:12px}

/* --- ×不正解ボックス --- */
.wrong-box{background:#fff5f5;border:2px solid #c0392b;border-radius:8px;padding:14px 18px;margin:16px 0 24px;font-size:.95rem}
.wrong-box .wrong-label{display:inline-block;background:#c0392b;color:#fff;font-size:.75rem;font-weight:700;padding:2px 10px;border-radius:4px;margin-bottom:8px}

/* --- 補足メモ --- */
.note-box{background:#fafafa;border:1px solid #ddd;border-radius:8px;padding:14px 18px;margin:16px 0;font-size:.88rem;line-height:1.7;color:#555}
.note-box::before{content:"💡 "}
.note-box.warn::before{content:"⚠️ "}
.note-box.warn{border-color:#e8c56a;background:#fffdf5}
.note-box.link::before{content:"🔗 "}

/* --- 練習問題ブロック --- */
.practice-block{background:#fafcff;border:2px solid #bdd4f0;border-radius:10px;padding:20px 24px;margin:32px 0}
.practice-block h3{color:#0056b3;margin:0 0 12px;font-size:1rem}
.practice-list{margin:0;padding:0;list-style:none}
.practice-list li{padding:8px 0;border-bottom:1px solid #e8f0fa;font-size:.93rem}
.practice-list li:last-child{border-bottom:none}
.practice-list .num{font-weight:700;color:#0056b3;margin-right:8px}

/* --- セクション区切り --- */
.section-divider{border:none;border-top:2px dashed #dde4ed;margin:40px 0}

/* --- 本文 --- */
.grammar-body p{font-size:.93rem;line-height:1.85;color:#333;margin-bottom:16px}
.grammar-body h2{margin-top:40px;padding-bottom:8px;border-bottom:2px solid #e0e6f0;font-size:1.15rem;color:#001f4d}
.grammar-body h3{margin-top:28px;font-size:1.02rem;color:#0056b3}

/* --- 比較テーブル --- */
.compare-table{width:100%;border-collapse:collapse;margin:16px 0;font-size:.9rem}
.compare-table th{background:#001f4d;color:#fff;padding:10px 12px;font-weight:600;text-align:center}
.compare-table td{padding:10px 12px;border:1px solid #ddd;vertical-align:top}
.compare-table tr:nth-child(even){background:#f9fafb}

/* --- ステップ表示 --- */
.step-label{display:inline-block;background:#0056b3;color:#fff;font-size:.72rem;font-weight:700;padding:2px 8px;border-radius:4px;margin-right:6px;vertical-align:middle}

/* --- アイコン付き見出し --- */
.icon-heading{display:flex;align-items:center;gap:8px;margin:32px 0 16px}
.icon-heading .icon{font-size:1.4rem}
.icon-heading .text{font-size:1.05rem;font-weight:700;color:#001f4d}

/* --- 学習パス（パンくず） --- */
.learning-path{background:#f8f9fb;border:1px solid #e4e8f0;border-radius:8px;padding:12px 18px;margin-bottom:28px;font-size:.82rem;color:#888;display:flex;flex-wrap:wrap;align-items:center;gap:4px}
.learning-path a{color:#0056b3;text-decoration:none;font-weight:500}
.learning-path a:hover{text-decoration:underline}
.learning-path .current{color:#001f4d;font-weight:700}
.learning-path .sep{color:#ccc;margin:0 2px}

/* --- 関連ページ案内 --- */
.related-pages{margin:36px 0 8px;padding:20px 24px;background:#fafcff;border:2px solid #d0dff0;border-radius:10px}
.related-pages h3{margin:0 0 14px;font-size:.95rem;color:#001f4d;font-weight:700}
.related-cards{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.related-card{display:block;padding:12px 14px;background:#fff;border:1px solid #e0e8f4;border-radius:8px;text-decoration:none;transition:border-color .2s,box-shadow .2s}
.related-card:hover{border-color:#0056b3;box-shadow:0 2px 8px rgba(0,86,179,.1)}
.related-card .rc-label{display:block;font-size:.7rem;font-weight:600;color:#888;margin-bottom:4px;text-transform:uppercase;letter-spacing:.03em}
.related-card .rc-title{display:block;font-size:.88rem;font-weight:700;color:#0056b3;line-height:1.4}
.related-card .rc-desc{display:block;font-size:.78rem;color:#999;margin-top:3px;line-height:1.4}
.related-card.prev .rc-label::before{content:"← "}
.related-card.next .rc-label::before{content:"→ "}
.related-card.base .rc-label::before{content:"📖 "}
.related-card.index .rc-label::before{content:"📋 "}

/* --- レスポンシブ --- */
@media(max-width:600px){
  .related-cards{grid-template-columns:1fr}
  .rules-summary{padding:16px}
  .rule-heading{font-size:.85rem;padding:5px 14px}
  .grammar-table{font-size:.8rem}
  .ex-table{font-size:.85rem}
  .ex-table td{padding:8px 6px}
  .answer-box{padding:12px 14px}
  .g2-intro{padding:16px}
}