/* ==================== KINJIコラム 共通スタイル ====================
   デザイントークンは kinji/index.html（KINJI LP）と共通の値を使用。
   ==================================================================== */

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
:root{
  --bg:#FAFAF7;
  --paper:#FFFFFF;
  --pale:#F5F0E8;
  --ink:#1a1412;
  --ink-mid:#3D2B1A;
  --ink-soft:#7A6A5A;
  --line:#DDD7CB;
  --line-soft:#E9E4D8;
  --gold:#C9A961;
  --gold-pale:#FFF7E8;
  --grad-warm:linear-gradient(135deg,#FFB088,#FFD66E);
  --grad-text:linear-gradient(90deg,#A07020,#B85828);
  --noise:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='250' height='250'%3E%3Cfilter id='g'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.52' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='250' height='250' filter='url(%23g)' opacity='1'/%3E%3C/svg%3E");
  --max-w:1080px;
  --article-w:720px;
  --r:20px;
  font-family:"Noto Sans JP","Plus Jakarta Sans","Hiragino Sans","Yu Gothic",sans-serif;
  font-feature-settings:"palt";
}
html{scroll-behavior:smooth;}
body{background:var(--bg);color:var(--ink);line-height:1.8;-webkit-font-smoothing:antialiased;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;cursor:pointer;}
.container{max-width:var(--max-w);margin:0 auto;padding:0 32px;}
@media(max-width:640px){.container{padding:0 20px;}}
.mono{font-family:'Space Mono',monospace;letter-spacing:.02em;}
.grad{background:var(--grad-text);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;}

/* ── Buttons（KINJI LPと共通）── */
.btn-primary{
  display:inline-flex;align-items:center;gap:8px;
  background-color:var(--ink);background-image:var(--noise);background-size:150px;background-blend-mode:screen;
  color:#fff;font-weight:800;font-size:15px;
  padding:16px 36px;border-radius:999px;border:none;
  transition:opacity .25s;white-space:nowrap;
}
.btn-primary:hover{opacity:.75;}
.btn-secondary{
  display:inline-flex;align-items:center;gap:8px;
  background:transparent;color:var(--ink);font-weight:800;font-size:15px;
  padding:15px 36px;border-radius:999px;border:2px solid var(--ink);
  transition:all .25s;white-space:nowrap;
}
.btn-secondary:hover{background:var(--ink);color:#fff;}
.btn-gold{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  background-image:var(--noise),var(--grad-warm);background-size:150px,auto;background-blend-mode:multiply,normal;
  color:#fff;font-weight:900;font-size:16px;
  padding:16px 40px;border-radius:999px;border:none;
  box-shadow:0 8px 28px rgba(255,176,136,.4);transition:opacity .25s;
  white-space:nowrap;
}
.btn-gold:hover{opacity:.85;}

/* ── Header（KINJI LPと共通）── */
.lp-header{
  position:sticky;top:0;z-index:100;
  background:rgba(250,250,247,.92);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line-soft);
  transition:box-shadow .3s ease;
}
.lp-header.scrolled{box-shadow:0 6px 24px rgba(90,110,130,.08);}
.lp-header-inner{
  max-width:var(--max-w);margin:0 auto;padding:14px 32px;
  display:flex;align-items:center;gap:16px;
}
.lp-logo img{height:30px;width:auto;}
.lp-header-nav{display:flex;align-items:center;gap:22px;margin-right:auto;}
.lp-header-nav a{font-size:13px;font-weight:700;color:var(--ink-mid);}
.lp-header-nav a:hover{color:var(--ink);}
.lp-header-nav a.back{display:flex;align-items:center;gap:4px;}
.lp-header-nav a.back::before{content:"←";}
.lp-header-nav a.current{color:var(--ink);}
.lp-header-ctas{display:flex;align-items:center;gap:12px;margin-left:auto;}
.lp-header-ctas .btn-small{font-size:13px;font-weight:700;padding:10px 22px;border-radius:999px;}
.lp-header-ctas .btn-small.outline{border:1.5px solid var(--ink);}
.lp-header-ctas .btn-small.fill{background-image:var(--noise),var(--grad-warm);background-size:140px,auto;background-blend-mode:multiply,normal;color:#14100C;font-weight:800;}
@media(max-width:640px){
  .lp-header-inner{flex-wrap:wrap;row-gap:8px;padding:12px 20px;}
  .lp-logo img{height:22px;}
  .lp-header-nav{display:none;}
  .lp-header-ctas{flex-wrap:wrap;justify-content:flex-end;}
  .lp-header-ctas .btn-small{font-size:11px;padding:8px 14px;}
}

/* ── パンくず ── */
.breadcrumb{font-size:12.5px;color:var(--ink-soft);margin-bottom:20px;}
.breadcrumb a{color:var(--ink-soft);font-weight:700;}
.breadcrumb a:hover{color:var(--ink);}
.breadcrumb .sep{margin:0 8px;color:var(--line);}
.breadcrumb .current{color:var(--ink-mid);}

/* ── コラム一覧：ヒーロー ── */
.column-hero{padding:56px 0 48px;background:linear-gradient(160deg,var(--bg) 0%,#FFF7EE 60%,#F5F0E8 100%);}
.column-hero h1{font-size:clamp(26px,4.4vw,38px);font-weight:900;line-height:1.35;letter-spacing:-.015em;margin-bottom:14px;word-break:keep-all;overflow-wrap:break-word;}
.column-hero p{font-size:14.5px;color:var(--ink-mid);max-width:640px;line-height:1.9;}

/* ── コラム一覧：カード ── */
.column-section{padding:56px 0 96px;}
.column-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px;}
@media(max-width:760px){.column-grid{grid-template-columns:1fr;}}
.column-card{
  display:block;background:var(--paper);border-radius:var(--r);
  padding:32px 28px;box-shadow:0 4px 20px rgba(90,110,130,.07);
  transition:transform .3s cubic-bezier(.22,1,.36,1), box-shadow .3s ease;
}
.column-card:hover{transform:translateY(-4px);box-shadow:0 16px 38px rgba(90,110,130,.14);}
.column-card-meta{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.column-card-tag{font-size:11px;font-weight:800;letter-spacing:.5px;color:var(--gold);}
.column-card-date{font-size:11.5px;color:var(--ink-soft);}
.column-card h2{font-size:19px;font-weight:800;line-height:1.5;margin-bottom:12px;color:var(--ink);word-break:keep-all;overflow-wrap:break-word;}
.column-card p{font-size:13.5px;color:var(--ink-mid);line-height:1.85;margin-bottom:18px;}
.column-card-more{font-size:13px;font-weight:800;color:var(--ink);}

/* ── コラム一覧：LPへの導線 ── */
.column-lp-cta{margin-top:64px;text-align:center;padding:44px 32px;border-radius:var(--r);background:var(--pale);}
.column-lp-cta p{font-size:14.5px;font-weight:700;color:var(--ink-mid);margin-bottom:20px;}

/* ── 記事：ヘッダー ── */
.article-header{padding:44px 0 8px;}
.article-header h1{font-size:clamp(24px,4vw,34px);font-weight:900;line-height:1.5;letter-spacing:-.01em;margin-bottom:16px;word-break:keep-all;overflow-wrap:break-word;}
.article-meta{display:flex;flex-wrap:wrap;gap:14px;font-size:12.5px;color:var(--ink-soft);padding-bottom:28px;border-bottom:1px solid var(--line-soft);}
.article-meta .tag{font-weight:800;color:var(--gold);}

/* ── 記事：本文レイアウト ── */
.article-wrap{padding:36px 0 88px;}
.article-lead{max-width:var(--article-w);margin:0 auto 36px;font-size:15.5px;color:var(--ink-mid);line-height:2;}
.article-body{max-width:var(--article-w);margin:0 auto;}

/* ── 目次 ── */
.article-toc{
  background:var(--paper);border:1px solid var(--line-soft);border-radius:16px;
  padding:24px 28px;margin-bottom:40px;
}
.article-toc-label{font-size:12px;font-weight:800;letter-spacing:2px;color:var(--ink-soft);margin-bottom:12px;}
.article-toc ol{list-style:none;counter-reset:toc;}
.article-toc li{counter-increment:toc;font-size:13.5px;padding:6px 0;line-height:1.6;}
.article-toc li::before{content:counter(toc) ". ";font-weight:800;color:var(--gold);}
.article-toc a{color:var(--ink-mid);font-weight:700;}
.article-toc a:hover{color:var(--ink);}

/* ── 記事本文タイポグラフィ ── */
.article-body h2{
  font-size:clamp(20px,3vw,25px);font-weight:900;line-height:1.5;
  letter-spacing:-.01em;margin:56px 0 20px;padding-top:8px;
  border-top:1px solid var(--line-soft);word-break:keep-all;overflow-wrap:break-word;
  scroll-margin-top:88px;
}
.article-body > h2:first-child{border-top:none;margin-top:0;padding-top:0;}
.article-body h3{font-size:17px;font-weight:800;line-height:1.6;margin:36px 0 16px;color:var(--ink);word-break:keep-all;overflow-wrap:break-word;}
.article-body h4{font-size:15px;font-weight:800;line-height:1.6;margin:28px 0 12px;color:var(--ink);word-break:keep-all;overflow-wrap:break-word;}
.article-body p{font-size:14.5px;color:var(--ink-mid);line-height:1.95;margin-bottom:18px;}
.article-body ul,.article-body ol{margin:0 0 20px;padding-left:0;list-style:none;}
.article-body ul li,.article-body ol li{font-size:14px;color:var(--ink-mid);line-height:1.85;padding:6px 0 6px 20px;position:relative;}
.article-body ul li::before{content:"–";position:absolute;left:0;color:var(--gold);font-weight:700;}
.article-body ol{counter-reset:olist;}
.article-body ol li{padding-left:28px;}
.article-body ol li::before{counter-increment:olist;content:counter(olist)".";position:absolute;left:0;color:var(--gold);font-weight:800;}
.article-body li b,.article-body li strong,.article-body p b,.article-body p strong{color:var(--ink);font-weight:800;}
.article-body .check-list li::before{content:"✓";color:var(--gold);font-weight:900;}

/* ── 事例ブロック（何をした／何が変わった／費用感）── */
.case-block{margin-bottom:32px;padding-bottom:28px;border-bottom:1px solid var(--line-soft);}
.case-block:last-child{border-bottom:none;margin-bottom:0;padding-bottom:0;}
.case-detail{margin:0;}
.case-detail dt{font-size:11.5px;font-weight:800;letter-spacing:.5px;color:var(--ink-soft);margin:14px 0 4px;}
.case-detail dt:first-child{margin-top:0;}
.case-detail dd{font-size:13.5px;color:var(--ink-mid);line-height:1.85;margin:0;}

/* ── 表 ── */
.article-body .table-scroll{overflow-x:auto;margin-bottom:24px;-webkit-overflow-scrolling:touch;}
.article-body table{width:100%;border-collapse:collapse;min-width:520px;}
.article-body table.compare-table{min-width:720px;}
.article-body table.compare-table td:first-child,.article-body table.compare-table th:first-child{white-space:nowrap;}
.article-body th,.article-body td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line-soft);font-size:12.5px;line-height:1.7;vertical-align:top;}
.article-body thead th{font-size:11.5px;font-weight:800;letter-spacing:.5px;color:var(--ink-soft);border-bottom:2px solid var(--gold);white-space:nowrap;}
.article-body tr:last-child td{border-bottom:none;}

/* ── コールアウト（数式・補足枠）── */
.formula-box{
  background:var(--pale);border-radius:14px;padding:20px 24px;margin-bottom:20px;
  font-size:14.5px;font-weight:800;color:var(--ink);line-height:1.8;
}
.note-box{
  background:var(--gold-pale);border-radius:14px;padding:18px 22px;margin-bottom:22px;
  font-size:13.5px;color:var(--ink-mid);line-height:1.85;
}
.note-box b{color:var(--ink);font-weight:800;}

/* ── 記事内CTA帯（控えめ・ボタン1〜2個）── */
.article-cta{
  margin:44px 0;padding:32px 28px;text-align:center;
  background:var(--pale);border-radius:16px;
}
.article-cta p{font-size:14px;font-weight:700;color:var(--ink-mid);margin-bottom:18px;}
.article-cta-buttons{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;}
.article-cta-end{margin-top:56px;}

/* ── FAQ（KINJI LPと共通の見た目）── */
.article-body .faq-list{margin-bottom:8px;}
.faq-item{border-bottom:1px solid var(--line-soft);}
.faq-item:first-child{border-top:1px solid var(--line-soft);}
.faq-item summary{list-style:none;cursor:pointer;padding:18px 40px 18px 30px;position:relative;font-size:14.5px;font-weight:800;color:var(--ink);line-height:1.65;overflow-wrap:break-word;}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary::before{content:"Q";position:absolute;left:0;top:17px;font-weight:900;color:var(--gold);font-size:15px;}
.faq-item summary::after{content:"+";position:absolute;right:6px;top:12px;font-size:24px;font-weight:300;color:var(--ink-soft);transition:transform .2s;line-height:1;}
.faq-item[open] summary::after{transform:rotate(45deg);}
.faq-item .faq-a{padding:0 30px 22px;font-size:13.5px;color:var(--ink-mid);line-height:1.9;}
.faq-item .faq-a b{color:var(--ink);font-weight:800;}

/* ── 関連記事 ── */
.related-section{max-width:var(--article-w);margin:64px auto 0;padding-top:40px;border-top:1px solid var(--line-soft);}
.related-label{font-size:12px;font-weight:800;letter-spacing:2px;color:var(--ink-soft);margin-bottom:18px;}
.related-grid{display:grid;grid-template-columns:1fr;gap:14px;}
.related-card{
  display:block;background:var(--paper);border:1px solid var(--line-soft);border-radius:14px;
  padding:20px 22px;transition:border-color .2s ease;
}
.related-card:hover{border-color:var(--gold);}
.related-card .rc-tag{font-size:11px;font-weight:800;color:var(--gold);margin-bottom:6px;display:block;}
.related-card .rc-title{font-size:14.5px;font-weight:800;color:var(--ink);line-height:1.6;word-break:keep-all;overflow-wrap:break-word;}

/* ── フッター（KINJI LPと共通）── */
.lp-footer{background:#14100C;color:rgba(255,255,255,.55);padding:48px 0;text-align:center;font-size:12px;}
.lp-footer a{color:rgba(255,255,255,.55);}
.lp-footer a:hover{color:#fff;}
.lp-footer-logo{margin-bottom:20px;}
.lp-footer-logo img{height:22px;filter:brightness(0) invert(1);margin:0 auto;opacity:.6;}
.footer-company{max-width:560px;margin:0 auto 26px;text-align:left;border-top:1px solid rgba(255,255,255,.12);border-bottom:1px solid rgba(255,255,255,.12);padding:22px 0;}
.footer-company .fc-title{font-family:'Plus Jakarta Sans',sans-serif;font-size:11px;font-weight:700;letter-spacing:.18em;text-transform:uppercase;color:rgba(255,255,255,.5);margin-bottom:14px;}
.footer-company dl{display:grid;grid-template-columns:88px 1fr;gap:8px 16px;margin:0;}
.footer-company dt{color:rgba(255,255,255,.45);font-size:11.5px;}
.footer-company dd{color:rgba(255,255,255,.72);font-size:11.5px;margin:0;line-height:1.7;}
.lp-footer-links{display:flex;justify-content:center;gap:28px;margin-bottom:16px;flex-wrap:wrap;}

/* ── Responsive ── */
@media(max-width:640px){
  .article-header{padding:32px 0 4px;}
  .article-wrap{padding:28px 0 64px;}
  .article-toc{padding:20px 22px;}
  .article-body h2{margin:44px 0 16px;}
  .article-cta{padding:26px 20px;}
  .column-hero{padding:44px 0 36px;}
  .column-section{padding:44px 0 72px;}
  .column-card{padding:26px 22px;}
}