@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;500;700&family=DM+Serif+Display&display=swap');

:root {
  --navy: #0f1e35;
  --dark: #1a2d45;
  --teal: #0e7490;
  --teal-light: #22d3ee;
  --accent: #f59e0b;
  --bg: #f8fafc;
  --border: #e2e8f0;
  --text: #1e293b;
  --muted: #64748b;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', sans-serif;
  font-size: 15px; line-height: 1.85; color: var(--text); background: #fff;
}
a { color: var(--teal); text-decoration: none; }
a:hover { text-decoration: underline; color: #0e6080; }
img { max-width: 100%; height: auto; }
p { margin-bottom: 14px; }
p:last-child { margin-bottom: 0; }

/* ===== Header ===== */
header {
  background: var(--navy);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  position: -webkit-sticky; position: sticky; top: 0; z-index: 100;
}
.header-inner {
  max-width: 960px; margin: 0 auto; padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between; height: 60px;
  gap: 16px;
}
.logo { color: #fff; font-size: 15px; font-weight: 700; letter-spacing: 0.05em; white-space: nowrap; }
.logo span { color: var(--teal-light); }

/* ===== Nav ===== */
.header-nav { display: flex; gap: 0; align-items: center; }
.header-nav a {
  color: rgba(255,255,255,0.6); font-size: 13px; padding: 0 13px; line-height: 60px;
  display: block; border-bottom: 2px solid transparent; transition: color 0.2s;
  white-space: nowrap;
}
.header-nav a:hover { color: #fff; text-decoration: none; }
.header-nav a.active { color: #fff; border-bottom: 2px solid var(--teal-light); }
.header-nav a.nav-column {
  color: var(--teal-light);
}
.header-nav a.nav-column:hover { color: #fff; }
.header-nav a.nav-column.active { color: #fff; border-bottom-color: var(--teal-light); }
.header-nav-cta {
  display: inline-block;
  background: var(--teal);
  color: #fff !important;
  font-size: 12px !important;
  font-weight: 700;
  padding: 7px 16px !important;
  border-radius: 2px;
  line-height: 1.4 !important;
  border-bottom: none !important;
  transition: background 0.2s;
  white-space: nowrap;
}
.header-nav-cta:hover { background: #0c6580 !important; text-decoration: none !important; }

/* ===== Page head ===== */
.page-head {
  background: linear-gradient(135deg, var(--navy) 0%, var(--dark) 100%);
  padding: 52px 24px;
  border-bottom: 3px solid var(--teal);
}
.page-head-inner { max-width: 960px; margin: 0 auto; }
.breadcrumb { font-size: 12px; color: rgba(255,255,255,0.4); margin-bottom: 10px; letter-spacing: 0.05em; }
.breadcrumb a { color: rgba(255,255,255,0.4); }
.page-head h1 { color: #fff; font-size: 26px; font-weight: 700; line-height: 1.4; margin-bottom: 8px; }
.page-head .lead { color: rgba(255,255,255,0.6); font-size: 14px; }

/* ===== Hero ===== */
.hero {
  background: linear-gradient(135deg, var(--navy) 0%, #0f2a44 50%, #0a3a50 100%);
  padding: 80px 24px;
  position: relative; overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at 80% 50%, rgba(14,116,144,0.2) 0%, transparent 60%);
}
.hero-inner { max-width: 1100px; margin: 0 auto; position: relative; }
.hero-label {
  display: inline-block; border: 1px solid rgba(34,211,238,0.4);
  color: var(--teal-light); font-size: 11px; letter-spacing: 0.3em;
  padding: 5px 16px; border-radius: 2px; margin-bottom: 24px;
  text-transform: uppercase;
}
.hero h1 {
  color: #fff; font-size: clamp(28px, 5vw, 46px); font-weight: 700;
  line-height: 1.3; margin-bottom: 20px; max-width: 680px;
}
.hero h1 em { font-style: normal; color: var(--teal-light); }
.hero-lead {
  color: rgba(255,255,255,0.7); font-size: 16px; max-width: 580px;
  line-height: 1.9; margin-bottom: 40px;
}
.hero-cta {
  display: inline-block; background: var(--teal); color: #fff;
  font-weight: 700; font-size: 15px; letter-spacing: 0.05em;
  padding: 14px 40px; border-radius: 2px; transition: all 0.2s;
}
.hero-cta:hover { background: #0c6580; text-decoration: none; transform: translateY(-1px); }
.hero-stats {
  display: flex; gap: 40px; margin-top: 56px;
  border-top: 1px solid rgba(255,255,255,0.1); padding-top: 32px;
}
.hero-stat-num { color: var(--teal-light); font-size: 28px; font-weight: 700; display: block; }
.hero-stat-label { color: rgba(255,255,255,0.5); font-size: 12px; letter-spacing: 0.05em; }

/* ===== Layout ===== */
.content-wrap {
  display: grid; grid-template-columns: 1fr 240px; gap: 48px;
  max-width: 960px; margin: 0 auto; padding: 56px 24px;
}

/* ===== Main ===== */
main h2 {
  font-size: 20px; color: var(--navy); font-weight: 700;
  border-left: 4px solid var(--teal); padding-left: 14px;
  margin: 40px 0 16px; line-height: 1.4;
}
main h2:first-child { margin-top: 0; }
main h3 { font-size: 16px; color: var(--dark); font-weight: 700; margin: 24px 0 10px; }

.highlight {
  background: #f0f9ff; border: 1px solid #bae6fd;
  border-radius: 4px; padding: 20px 24px; margin: 20px 0;
}
.highlight p:last-child { margin: 0; }

/* ===== Tables ===== */
table.wptable { width: 100%; border-collapse: collapse; margin: 16px 0; font-size: 14px; }
table.wptable th { background: var(--navy); color: #fff; padding: 10px 14px; text-align: left; }
table.wptable td { padding: 11px 14px; border-bottom: 1px solid var(--border); vertical-align: top; line-height: 1.8; }
table.wptable tr:nth-child(even) td { background: #f8fafc; }
table.wptable td strong { color: var(--navy); }

/* ===== Steps ===== */
.steps { margin: 24px 0; }
.step {
  display: flex; gap: 20px; margin-bottom: 28px;
  padding: 20px; border: 1px solid var(--border); border-radius: 4px;
  background: #fafcff; transition: box-shadow 0.2s;
}
.step:hover { box-shadow: 0 4px 16px rgba(15,30,53,0.08); }
.step-num {
  width: 44px; height: 44px; border-radius: 50%; background: var(--teal);
  color: #fff; font-size: 13px; font-weight: 700; display: flex;
  align-items: center; justify-content: center; flex-shrink: 0;
}
.step-body h3 { font-size: 15px; color: var(--navy); margin: 0 0 6px; }
.step-body p { font-size: 14px; color: #555; margin: 0; line-height: 1.8; }

/* ===== Type cards ===== */
.type-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px,1fr)); gap: 16px; margin: 20px 0; }
.type-card {
  border: 1px solid var(--border); border-radius: 4px; padding: 20px;
  background: #fff; border-top: 3px solid var(--teal);
}
.type-card h3 { font-size: 14px; color: var(--navy); margin: 0 0 8px; }
.type-card p { font-size: 13px; color: var(--muted); margin: 0; line-height: 1.7; }

/* ===== Cards ===== */
.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px,1fr)); gap: 14px; margin: 24px 0; }
.card {
  border: 1px solid var(--border); border-radius: 4px; padding: 20px;
  background: #f8fafc; transition: box-shadow 0.2s;
}
.card:hover { box-shadow: 0 4px 16px rgba(15,30,53,0.08); }
.card h3 { font-size: 14px; color: var(--navy); margin: 0 0 8px; font-weight: 700; }
.card p { font-size: 13px; color: var(--muted); margin: 0 0 10px; line-height: 1.7; }
.card a { font-size: 13px; color: var(--teal); }

/* ===== Inline CTA ===== */
.cta-inline {
  background: linear-gradient(135deg, var(--navy) 0%, var(--dark) 100%);
  color: #fff; border-radius: 4px; padding: 32px; text-align: center; margin: 36px 0;
}
.cta-inline h3 { color: var(--teal-light); font-size: 18px; margin-bottom: 10px; }
.cta-inline p { font-size: 14px; color: rgba(255,255,255,0.7); margin-bottom: 20px; line-height: 1.9; }
.cta-inline a {
  display: inline-block; background: var(--teal); color: #fff;
  font-weight: 700; padding: 12px 36px; border-radius: 2px; font-size: 14px;
}
.cta-inline a:hover { text-decoration: none; background: #0c6580; }

/* ===== FAQ ===== */
.faq-item { border-bottom: 1px solid var(--border); padding: 22px 0; }
.faq-q { font-weight: 700; color: var(--navy); margin-bottom: 10px; font-size: 15px; }
.faq-q::before { content: 'Q. '; color: var(--teal); }
.faq-a { font-size: 14px; color: #444; line-height: 1.85; }

/* ===== Next link ===== */
.next-link {
  background: #f8fafc; border: 1px solid var(--border); border-radius: 4px;
  padding: 14px 20px; margin-top: 32px; display: flex; justify-content: space-between; align-items: center;
}
.next-link span { font-size: 12px; color: var(--muted); }
.next-link a { font-size: 14px; font-weight: 700; color: var(--navy); }

/* ===== Sidebar ===== */
aside { padding-top: 0; }
.side-nav {
  background: #f8fafc; border: 1px solid var(--border);
  border-radius: 4px; padding: 18px; margin-bottom: 20px;
}
.side-nav h4 {
  font-size: 12px; color: var(--muted); font-weight: 700; margin-bottom: 10px;
  padding-bottom: 8px; border-bottom: 1px solid var(--border);
  text-transform: uppercase; letter-spacing: 0.1em;
}
.side-nav ul { list-style: none; }
.side-nav ul li a {
  font-size: 13px; color: var(--text); display: block;
  padding: 6px 0; border-bottom: 1px dotted var(--border);
}
.side-nav ul li:last-child a { border-bottom: none; }
.side-nav ul li a:hover { color: var(--teal); text-decoration: none; }
.side-nav ul li a.active { color: var(--teal); font-weight: 700; }

/* サイドナビ コラムアコーディオン */
.side-nav-col-btn {
  width: 100%; background: none; border: none;
  font-size: 13px; color: var(--text);
  font-family: inherit; font-weight: 400;
  display: flex; align-items: center; justify-content: space-between;
  padding: 6px 0;
  border-bottom: 1px dotted var(--border);
  cursor: pointer; text-align: left;
  -webkit-appearance: none;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}
.side-nav-col-btn:hover { color: var(--teal); }
.side-nav-col-btn.active { color: var(--teal); font-weight: 700; }
.side-col-arrow {
  display: inline-block;
  width: 6px; height: 6px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg);
  transition: transform 0.25s;
  flex-shrink: 0;
}
.side-nav-col-btn[aria-expanded="true"] .side-col-arrow {
  transform: rotate(-135deg);
}
.side-nav-sub {
  list-style: none;
  max-height: 0;
  overflow: hidden;
}
.side-nav-sub.is-open {
  max-height: 600px;
}
.side-nav-sub li a {
  font-size: 12px !important;
  padding: 4px 0 4px 10px !important;
  color: var(--muted) !important;
  border-bottom: 1px dotted var(--border) !important;
}
.side-nav-sub li:last-child a { border-bottom: none !important; }
.side-nav-sub li a:hover { color: var(--teal) !important; }
.side-nav-sub li a.active { color: var(--teal) !important; font-weight: 700 !important; }

.side-cta {
  background: var(--navy); color: #fff;
  border-radius: 4px; padding: 20px; text-align: center;
}
.side-cta h4 { color: var(--teal-light); font-size: 14px; margin-bottom: 10px; line-height: 1.6; }
.side-cta p { font-size: 12px; color: rgba(255,255,255,0.6); margin-bottom: 14px; line-height: 1.7; }
.side-cta a.cta-btn {
  display: block; background: var(--teal); color: #fff;
  font-weight: 700; padding: 9px; border-radius: 2px; font-size: 13px;
}
.side-cta a.cta-btn:hover { text-decoration: none; background: #0c6580; }

/* ===== Footer ===== */
footer {
  background: var(--navy); color: rgba(255,255,255,0.35);
  text-align: center; padding: 28px; font-size: 12px;
  letter-spacing: 0.08em; line-height: 2;
}
footer a { color: rgba(34,211,238,0.5); }
footer a:hover { color: var(--teal-light); }

/* ===== Hamburger button ===== */
.burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px; height: 44px;
  background: none; border: none;
  cursor: pointer; padding: 10px;
  z-index: 201;
  -webkit-appearance: none;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}
.burger span {
  display: block;
  width: 22px; height: 2px;
  background: rgba(255,255,255,0.85);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
  transform-origin: center;
}
.burger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger.is-open span:nth-child(2) { opacity: 0; }
.burger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ===== Nav drawer (mobile) ===== */
.nav-overlay {
  display: none;
  position: fixed;
  top: 0; right: 0; bottom: 0; left: 0;
  background: rgba(0,0,0,0.45);
  z-index: 199;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}
.nav-overlay.is-open { opacity: 1; pointer-events: auto; }

.nav-drawer {
  position: fixed; top: 0; right: 0; bottom: 0;
  width: 280px; max-width: 85vw;
  background: var(--navy);
  border-left: 1px solid rgba(255,255,255,0.1);
  z-index: 200;
  transform: translateX(100%);
  -webkit-transform: translateX(100%);
  transition: transform 0.32s cubic-bezier(0.4,0,0.2,1);
  -webkit-transition: -webkit-transform 0.32s cubic-bezier(0.4,0,0.2,1);
  padding-top: 60px;
  overflow-y: scroll;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
}
.nav-drawer.is-open {
  transform: translateX(0);
  -webkit-transform: translateX(0);
}
.nav-drawer.is-open { transform: translateX(0); }
.nav-drawer a {
  color: rgba(255,255,255,0.72);
  font-size: 12px;
  padding: 7px 16px;
  display: block;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  transition: color 0.2s, background 0.2s;
  text-decoration: none;
  line-height: 1.4;
}
.nav-drawer a:hover { color: #fff; background: rgba(255,255,255,0.05); }
.nav-drawer a.active { color: var(--teal-light); }

/* コラム アコーディオンボタン */
.nav-drawer-col-btn {
  width: 100%;
  background: none; border: none;
  color: rgba(255,255,255,0.72);
  font-size: 12px;
  font-family: inherit;
  padding: 7px 16px;
  display: -webkit-box; display: flex;
  -webkit-box-align: center; align-items: center;
  -webkit-box-pack: justify; justify-content: space-between;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  cursor: pointer;
  text-align: left;
  line-height: 1.4;
  -webkit-appearance: none;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}
.nav-drawer-col-btn:hover { color: #fff; background: rgba(255,255,255,0.05); }
.nav-drawer-col-btn.active { color: var(--teal-light); }
.col-arrow {
  display: inline-block;
  width: 6px; height: 6px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg);
  transition: transform 0.25s;
  flex-shrink: 0;
  margin-right: 2px;
}
.nav-drawer-col-btn[aria-expanded="true"] .col-arrow {
  transform: rotate(-135deg);
}

/* コラムサブメニュー */
.nav-drawer-sub {
  background: rgba(0,0,0,0.25);
  max-height: 0;
  overflow: hidden;
}
.nav-drawer-sub.is-open {
  max-height: 700px;
}
.nav-drawer-sub a {
  font-size: 11px;
  padding: 5px 16px 5px 28px;
  color: rgba(255,255,255,0.5);
  border-bottom: 1px solid rgba(255,255,255,0.04);
  line-height: 1.4;
}
.nav-drawer-sub a:hover { color: rgba(255,255,255,0.85); }
.nav-drawer-sub a.active { color: var(--teal-light); }

.nav-drawer-cta {
  margin: 12px 14px 14px;
  display: block;
  background: var(--teal);
  color: #fff !important;
  text-align: center;
  padding: 9px 14px !important;
  border-radius: 2px;
  font-weight: 700;
  font-size: 11px !important;
  border-bottom: none !important;
}

/* ===== Mobile ===== */
@media (max-width: 680px) {
  .content-wrap { grid-template-columns: 1fr; }
  aside { order: -1; }
  .header-nav { display: none; }
  .burger { display: flex; }
  .nav-overlay { display: block; }
  .hero { padding: 56px 20px; }
  .hero-stats { flex-wrap: wrap; gap: 24px; }
}

/* =========================================================
   ▼ 追加コンポーネント（2026-05-28 SEO増強時に追加）
   既存ルールは未変更。以下、番号で管理。
   ========================================================= */

/* [01] グローバルフッター拡張（サイトマップ型フッター） */
.site-footer {
  background: var(--navy);
  color: rgba(255,255,255,0.7);
  padding: 48px 24px 0;
  margin-top: 64px;
}
.site-footer-inner {
  max-width: 960px; margin: 0 auto;
  display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px;
}
.site-footer h5 {
  color: #fff; font-size: 13px; letter-spacing: 0.05em;
  margin-bottom: 14px; font-weight: 700;
}
.site-footer .foot-brand { font-size: 16px; font-weight: 700; color: #fff; margin-bottom: 10px; }
.site-footer .foot-brand span { color: var(--teal-light); }
.site-footer p { font-size: 13px; line-height: 1.8; color: rgba(255,255,255,0.55); }
.site-footer ul { list-style: none; }
.site-footer li { margin-bottom: 8px; }
.site-footer a { color: rgba(255,255,255,0.6); font-size: 13px; }
.site-footer a:hover { color: var(--teal-light); text-decoration: none; }
.site-footer-bottom {
  max-width: 960px; margin: 36px auto 0; padding: 18px 0;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 12px; color: rgba(255,255,255,0.4);
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px;
}
.site-footer-bottom a { color: rgba(255,255,255,0.4); }

/* [02] 目次ボックス（記事ページ用） */
.toc {
  background: #f8fafc; border: 1px solid var(--border);
  border-radius: 6px; padding: 20px 24px; margin: 24px 0 32px;
}
.toc-title { font-size: 13px; font-weight: 700; color: var(--navy); letter-spacing: 0.05em; margin-bottom: 12px; }
.toc ol { margin: 0; padding-left: 20px; }
.toc li { margin-bottom: 7px; font-size: 14px; }
.toc a { color: var(--text); }
.toc a:hover { color: var(--teal); }

/* [03] 著者・監修ボックス（E-E-A-T） */
.author-box {
  display: flex; gap: 16px; align-items: flex-start;
  background: #fff; border: 1px solid var(--border);
  border-radius: 6px; padding: 18px 20px; margin: 32px 0;
}
.author-box .avatar {
  width: 52px; height: 52px; border-radius: 50%; flex-shrink: 0;
  background: linear-gradient(135deg, var(--teal), var(--teal-light));
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 700; font-size: 18px;
}
.author-box .author-meta strong { display: block; color: var(--navy); font-size: 14px; margin-bottom: 4px; }
.author-box .author-meta p { font-size: 13px; color: var(--muted); margin: 0; line-height: 1.7; }

/* [04] 関連記事リンク群 */
.related {
  margin: 40px 0 0; border-top: 1px solid var(--border); padding-top: 28px;
}
.related h2 { margin-top: 0 !important; }
.related-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 16px; }
.related-grid a {
  display: block; border: 1px solid var(--border); border-radius: 6px;
  padding: 16px 18px; transition: all 0.15s;
}
.related-grid a:hover { border-color: var(--teal); text-decoration: none; transform: translateY(-1px); box-shadow: 0 4px 14px rgba(15,30,53,0.06); }
.related-grid .rl-cat { font-size: 11px; color: var(--teal); letter-spacing: 0.05em; }
.related-grid .rl-title { display: block; color: var(--navy); font-weight: 700; font-size: 14px; margin-top: 4px; line-height: 1.5; }

/* [05] 定義リスト / 用語ボックス */
.def-box {
  background: #f0f9ff; border-left: 4px solid var(--teal);
  border-radius: 0 6px 6px 0; padding: 16px 20px; margin: 20px 0;
}
.def-box dt { font-weight: 700; color: var(--navy); font-size: 14px; }
.def-box dd { margin: 4px 0 14px; font-size: 14px; }
.def-box dd:last-child { margin-bottom: 0; }

/* [06] チェックリスト */
.checklist { list-style: none; margin: 16px 0; padding: 0; }
.checklist li {
  position: relative; padding-left: 28px; margin-bottom: 10px; font-size: 14px;
}
.checklist li::before {
  content: '✓'; position: absolute; left: 0; top: 0;
  color: var(--teal); font-weight: 700;
}

/* [07] 会社概要テーブル */
.company-table { width: 100%; border-collapse: collapse; margin: 20px 0; }
.company-table th, .company-table td {
  border: 1px solid var(--border); padding: 12px 16px; text-align: left; font-size: 14px; vertical-align: top;
}
.company-table th { background: #f1f5f9; color: var(--navy); width: 160px; font-weight: 700; }

/* [08] 数値で見るブロック */
.stat-row { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; margin: 24px 0; }
.stat-box {
  background: #fff; border: 1px solid var(--border); border-radius: 6px;
  padding: 20px; text-align: center;
}
.stat-box .num { font-size: 26px; font-weight: 700; color: var(--teal); display: block; }
.stat-box .lbl { font-size: 12px; color: var(--muted); margin-top: 4px; display: block; }

/* [09] 注意・ポイントボックスのバリエーション */
.note-box {
  background: #fffbeb; border: 1px solid #fde68a; border-radius: 6px;
  padding: 16px 20px; margin: 20px 0; font-size: 14px;
}
.note-box strong { color: #b45309; }

/* [10] レスポンシブ調整（追加分） */
@media (max-width: 768px) {
  .site-footer-inner { grid-template-columns: 1fr; gap: 28px; }
  .related-grid { grid-template-columns: 1fr; }
  .stat-row { grid-template-columns: 1fr; }
  .company-table th { width: 110px; }
  .author-box { flex-direction: row; }
}

/* [11] コラム一覧カード */
.column-list { display: grid; grid-template-columns: 1fr; gap: 20px; margin: 24px 0; }
.column-card {
  border: 1px solid var(--border); border-radius: 6px;
  padding: 24px 28px; background: #fff; transition: all 0.15s;
  display: block; color: var(--text);
}
.column-card:hover {
  border-color: var(--teal); text-decoration: none;
  box-shadow: 0 4px 16px rgba(15,30,53,0.08); transform: translateY(-1px);
}
.column-card-meta { display: flex; gap: 12px; align-items: center; margin-bottom: 10px; }
.column-card-cat {
  font-size: 11px; background: var(--teal); color: #fff;
  padding: 3px 10px; border-radius: 2px; letter-spacing: 0.05em;
}
.column-card-date { font-size: 12px; color: var(--muted); }
.column-card-title { font-size: 17px; font-weight: 700; color: var(--navy); margin-bottom: 8px; line-height: 1.5; }
.column-card-excerpt { font-size: 13px; color: var(--muted); line-height: 1.8; margin: 0; }

/* [12] コラムページ内 著者ボックスのバリエーション */
.column-note {
  background: #f0fdf4; border: 1px solid #bbf7d0; border-radius: 6px;
  padding: 16px 20px; margin: 20px 0; font-size: 14px; line-height: 1.85;
}
.column-note strong { color: #166534; }

/* [13] コラム一覧カードサムネイル */
.column-card-img {
  width: 100%; height: 170px;
  object-fit: cover;
  border-radius: 4px;
  display: block;
  margin-bottom: 16px;
}

/* [13b] コラム一覧レスポンシブ */
@media (max-width: 680px) {
  .column-card { padding: 18px 20px; }
  .column-card-title { font-size: 15px; }
}

/* [14] Hero 画像 */
.hero-img {
  width: 100%; height: auto;
  border-radius: 8px;
  display: block;
  box-shadow: 0 16px 48px rgba(0,0,0,0.45);
}

/* [14b] Hero 2カラム */
.hero-inner {
  display: flex;
  align-items: center;
  gap: 40px;
}
.hero-text { flex: 1; min-width: 0; }
.hero-visual { flex: 0 0 460px; }

/* [15] ホワイトペーパーモックアップ（CSS） */
.wp-mock {
  background: #fff;
  border-radius: 6px;
  padding: 22px 20px 18px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.55), 0 0 0 1px rgba(255,255,255,0.06);
  transform: rotate(-1.8deg);
  position: relative;
}
.wp-mock::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: var(--teal);
  border-radius: 6px 6px 0 0;
}
.wp-mock-cap {
  display: inline-block;
  background: var(--navy);
  color: var(--teal-light);
  font-size: 8px; letter-spacing: 0.18em;
  padding: 4px 9px; border-radius: 2px;
  text-transform: uppercase; margin-bottom: 13px;
}
.wp-mock-title {
  height: 10px; background: var(--navy);
  border-radius: 2px; margin-bottom: 13px; width: 72%;
}
.wp-mock-line {
  height: 5px; background: #dde3ed;
  border-radius: 3px; margin-bottom: 6px;
}
.wp-mock-line.w-full { width: 100%; }
.wp-mock-line.w-85  { width: 85%;  }
.wp-mock-line.w-65  { width: 65%;  }
.wp-mock-line.w-48  { width: 48%;  }
.wp-mock-divider {
  height: 1px; background: #e8ecf2; margin: 13px 0;
}
.wp-mock-chart {
  display: flex; align-items: flex-end; gap: 5px;
  height: 50px; margin-bottom: 12px;
}
.wp-mock-bar {
  flex: 1;
  background: linear-gradient(to top, var(--teal), rgba(34,211,238,0.55));
  border-radius: 2px 2px 0 0;
}
.wp-mock-btn {
  display: block; background: var(--teal); color: #fff;
  font-size: 8px; letter-spacing: 0.12em; text-align: center;
  padding: 5px; border-radius: 2px; text-transform: uppercase;
}

/* [16] カード・タイプカードのアイコン */
.card-icon, .type-icon {
  display: block;
  color: var(--teal);
  margin-bottom: 10px;
}
.card-icon { width: 32px; height: 32px; }
.type-icon { width: 28px; height: 28px; }

/* [17] コラム記事ヘッダー画像 */
.article-hero-img {
  width: 100%; height: auto;
  border-radius: 8px;
  margin-bottom: 32px;
  display: block;
  box-shadow: 0 4px 20px rgba(15,30,53,0.12);
}

/* [18] hero visual モバイル非表示 */
@media (max-width: 760px) {
  .hero-inner { flex-direction: column; gap: 28px; }
  .hero-visual { display: none; }
}