/* コラム共通スタイル(LPのトークンに合わせています) */
:root{
  --navy-900:#051f3d;
  --navy-700:#004f8e;
  --mint-500:#95d0c0;
  --sky-300:#92d2dc;
  --coral-600:#c0392b;
  --gold-300:#ffe066;
  --paper-50:#f5f7fa;
  --ink-900:#1b2430;
  --ink-600:#4b5563;
  --line-200:#dfe3e6;
  --maxw:1120px;
}
*{box-sizing:border-box;}
body{
  margin:0;background:var(--paper-50);color:var(--ink-900);
  font-family:"Noto Sans JP","Hiragino Kaku Gothic ProN",sans-serif;
  font-feature-settings:"palt";line-height:1.9;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--navy-700);}
h1,h2,h3{font-family:"Zen Kaku Gothic New","Noto Sans JP",sans-serif;color:var(--navy-900);margin:0;text-wrap:balance;}

/* header */
.topbar{background:#fff;border-bottom:1px solid var(--line-200);position:sticky;top:0;z-index:50;}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 24px;max-width:var(--maxw);margin:0 auto;}
.logo{font-family:"Zen Kaku Gothic New";font-weight:900;font-size:18px;color:var(--navy-900);text-decoration:none;white-space:nowrap;}
.topbar-links{display:flex;gap:20px;font-size:14px;font-weight:700;}
.topbar-links a{text-decoration:none;color:var(--ink-900);}
.topbar-links a:hover{color:var(--navy-700);}

/* breadcrumb */
.breadcrumb{max-width:var(--maxw);margin:0 auto;padding:16px 24px 0;font-size:12px;color:var(--ink-600);}
.breadcrumb a{color:var(--ink-600);}

/* draft note */
.note{
  font-size:12.5px;color:#9c2b3d;background:#fdf1f2;border:1px solid #f3c9ce;
  padding:12px 16px;margin-bottom:28px;line-height:1.8;
}

/* ---------- 一覧 ---------- */
.list-wrap{max-width:var(--maxw);margin:0 auto;padding:40px 24px 90px;}
.list-head{text-align:center;margin-bottom:40px;}
.list-head h1{font-size:clamp(24px,3.4vw,32px);}
.list-head p{color:var(--ink-600);font-size:15px;margin:10px 0 0;}
.column-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:28px;}
.column-card{display:block;text-decoration:none;color:inherit;background:#fff;border:1px solid var(--line-200);}
.column-card:hover h2{color:var(--navy-700);}
.column-card .body{padding:16px 18px 20px;}
.column-card h2{font-size:15.5px;line-height:1.6;margin:8px 0 6px;}
.column-date{font-size:12px;color:var(--ink-600);}
.column-cat{display:inline-block;font-size:11.5px;font-weight:700;color:var(--navy-700);background:#eaf1fd;padding:3px 10px;}

/* eyecatch placeholder */
.eyecatch{
  aspect-ratio:16/9;background:var(--paper-50);border-bottom:1px solid var(--line-200);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;
  color:var(--navy-700);font-size:12px;text-align:center;
}
.eyecatch img{width:100%;height:100%;object-fit:cover;}
.eyecatch .tag{font-family:"Courier New",monospace;font-size:11px;color:var(--ink-600);}

/* ---------- 記事 ---------- */
.article-wrap{max-width:760px;margin:0 auto;padding:28px 24px 90px;}
.article-head{margin-bottom:28px;}
.article-head h1{font-size:clamp(22px,3.6vw,30px);line-height:1.45;margin:12px 0 10px;}
.article-meta{font-size:12.5px;color:var(--ink-600);display:flex;gap:16px;flex-wrap:wrap;}
.article-eyecatch{border:1px solid var(--line-200);margin-bottom:32px;}
.article-eyecatch .eyecatch{border:none;}

.lead{font-size:15.5px;background:#fff;border-left:4px solid var(--mint-500);padding:18px 20px;margin:0 0 36px;}

.toc{background:#fff;border:1px solid var(--line-200);padding:18px 22px;margin-bottom:40px;}
.toc-title{font-weight:700;color:var(--navy-900);font-size:14px;margin-bottom:6px;}
.toc ol{margin:0;padding-left:1.4em;font-size:14px;}
.toc a{text-decoration:none;}
.toc a:hover{text-decoration:underline;}

.article-body h2{
  font-size:20px;line-height:1.5;margin:48px 0 16px;
  padding:12px 16px;background:var(--navy-900);color:#fff;
}
.article-body h3{font-size:17px;margin:32px 0 12px;padding-left:12px;border-left:4px solid var(--navy-700);}
.article-body p{font-size:15.5px;margin:0 0 18px;}
.article-body ul,.article-body ol{font-size:15.5px;padding-left:1.4em;margin:0 0 18px;}
.article-body li{margin-bottom:6px;}
.article-body .mark{background:linear-gradient(transparent 60%,var(--gold-300) 60%);padding:0 2px;font-weight:700;}
.article-body table{width:100%;border-collapse:collapse;font-size:14px;margin:0 0 22px;background:#fff;}
.article-body th,.article-body td{border:1px solid var(--line-200);padding:10px 12px;text-align:left;vertical-align:top;}
.article-body th{background:#eaf1fd;color:var(--navy-900);white-space:nowrap;}
.table-scroll{overflow-x:auto;}
.point{background:#fff;border:2px solid var(--sky-300);padding:16px 20px;margin:0 0 22px;font-size:15px;}
.point b{color:var(--navy-700);}
.check{color:var(--coral-600);font-size:12px;font-weight:700;}
.summary{background:#fff;border:1px solid var(--line-200);border-top:3px solid var(--navy-700);padding:20px 22px;margin:40px 0;}
.summary h2{background:none;color:var(--navy-900);padding:0;margin:0 0 10px;font-size:18px;}
.disclaimer{font-size:12.5px;color:var(--ink-600);line-height:1.8;margin-top:24px;}

/* CTA */
.article-cta{
  background:linear-gradient(160deg,var(--navy-900),var(--navy-700));color:#fff;
  padding:32px 24px;text-align:center;margin:48px 0 0;
}
.article-cta p{margin:0 0 18px;font-size:15px;}
.article-cta .title{font-family:"Zen Kaku Gothic New";font-weight:900;font-size:20px;margin-bottom:8px;}
.cta-row{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;}
.cta-btn{
  display:inline-flex;align-items:center;justify-content:center;
  background:var(--mint-500);color:var(--navy-900);font-weight:700;font-size:15px;
  padding:14px 28px;text-decoration:none;
}
.cta-btn:hover{background:#fff;}
.cta-btn.line{background:#06C755;color:#fff;}
.cta-btn.line:hover{background:#05a847;}

/* related */
.related{margin-top:56px;}
.related-title{font-family:"Zen Kaku Gothic New";font-weight:700;font-size:17px;color:var(--navy-900);margin-bottom:14px;}
.related ul{list-style:none;padding:0;margin:0;border-top:1px solid var(--line-200);}
.related li{border-bottom:1px solid var(--line-200);}
.related a{display:block;padding:12px 4px;text-decoration:none;font-size:14.5px;font-weight:500;}

footer{background:#020d1f;color:rgba(255,255,255,.7);padding:24px;text-align:center;font-size:13px;}
footer a{color:rgba(255,255,255,.85);margin:0 8px;}

@media (max-width:600px){
  .topbar-links{display:none;}
  .article-body h2{font-size:18px;}
}

/* ---------- AIO/SEO 用パーツ ---------- */
/* 冒頭の結論ボックス:AI・検索結果に引用されやすいよう、答えを先に短く書く */
.answer{background:#fff;border:2px solid var(--navy-700);padding:18px 22px;margin:0 0 32px;}
.answer-title{font-family:"Zen Kaku Gothic New";font-weight:900;color:var(--navy-700);font-size:15px;margin-bottom:8px;}
.answer p{font-size:15.5px;margin:0 0 8px;}
.answer ul{font-size:15px;margin:0;padding-left:1.3em;}
.answer li{margin-bottom:4px;}
/* 見出し直後の一文回答 */
.article-body .direct{font-weight:700;color:var(--navy-900);}
.article-body td.num,.article-body th.num{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap;}
.table-note{font-size:12.5px;color:var(--ink-600);margin:-12px 0 22px;line-height:1.7;}
/* FAQ */
.faq{margin:0 0 22px;}
.faq dt{font-weight:700;color:var(--navy-900);font-size:15.5px;margin-top:18px;padding-left:1.8em;text-indent:-1.8em;}
.faq dt::before{content:"Q.";color:var(--navy-700);margin-right:.5em;font-family:"Zen Kaku Gothic New";font-weight:900;}
.faq dd{margin:6px 0 0;font-size:15px;padding-left:1.8em;text-indent:-1.8em;}
.faq dd::before{content:"A.";color:var(--coral-600);margin-right:.5em;font-family:"Zen Kaku Gothic New";font-weight:900;}
/* 出典 */
.sources{font-size:13px;color:var(--ink-600);border-top:1px solid var(--line-200);padding-top:14px;margin-top:28px;}
.sources ul{font-size:13px;margin:6px 0 0;}
/* 執筆・監修 */
.author-box{display:flex;gap:14px;align-items:flex-start;background:#fff;border:1px solid var(--line-200);padding:16px 18px;margin:0 0 28px;font-size:13px;line-height:1.7;}
.author-box .avatar{flex:none;width:52px;height:52px;border-radius:50%;background:var(--paper-50);border:1px dashed var(--line-200);display:flex;align-items:center;justify-content:center;font-size:10px;color:var(--ink-600);}
.author-box b{color:var(--navy-900);font-size:14px;}
/* 一覧:アイキャッチ画像ができるまでの帯 */
.eyecatch.cat-band{background:linear-gradient(160deg,var(--navy-900),var(--navy-700));color:#fff;font-family:"Zen Kaku Gothic New";font-weight:900;font-size:18px;border-bottom:none;}