/* ============================================================
   株式会社MCO / AI経営コラム（/insights）共通スタイル
   ブランド「凛墨金彩」: 深紺 × 墨 × 金 / 見出し明朝 / 数字モノスペース
   カード・グラデーション・影・角丸・アイコンは使わない。余白と1pxの罫線で組む。
   ============================================================ */

:root {
  --mco-ink-900: #0a2540; /* 深紺 = 基幹色 */
  --mco-ink-950: #020817; /* 最深紺 */
  --mco-kin-600: #b08d57; /* 金（ライト背景上） */
  --mco-kin-400: #d6bc94; /* 金（ダーク背景上） */
  --mco-sumi-700: #334155; /* 本文 */
  --mco-sumi-500: #64748b; /* 補助テキスト */
  --mco-sumi-50: #f8fafc; /* 薄墨背景 */
  --mco-line: #e2e8f0; /* 罫線 */
  --mco-serif: "Shippori Mincho", "Noto Serif JP", "Yu Mincho", serif;
  --mco-sans: "Noto Sans JP", "Yu Gothic", sans-serif;
  --mco-mono: "Roboto Mono", Consolas, monospace;
}

/* ---------- 記事の器 ---------- */
.mco-article {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 24px 96px;
  font-family: var(--mco-sans);
  font-size: 17px;
  line-height: 1.9;
  color: var(--mco-sumi-700);
  font-feature-settings: "palt";
}

/* ---------- ヘッダー ---------- */
.mco-article__head {
  padding: 72px 0 40px;
  border-bottom: 1px solid var(--mco-line);
}

.mco-article__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin: 0 0 20px;
  font-family: var(--mco-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mco-sumi-500);
}

.mco-article__meta .mco-cat {
  font-family: var(--mco-sans);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--mco-ink-900);
  border-left: 2px solid var(--mco-kin-600);
  padding-left: 10px;
}

.mco-article__title {
  font-family: var(--mco-serif);
  font-weight: 600;
  font-size: clamp(27px, 4.4vw, 40px);
  line-height: 1.5;
  letter-spacing: -0.02em;
  color: var(--mco-ink-900);
  margin: 0 0 20px;
}

.mco-article__lead {
  font-size: 16px;
  line-height: 1.9;
  color: var(--mco-sumi-700);
  margin: 0 0 32px;
  padding-left: 16px;
  border-left: 1px solid var(--mco-line);
}

.mco-hero {
  margin: 0 0 24px;
}

.mco-hero img {
  display: block;
  width: 100%;
  height: auto;
  border-top: 1px solid var(--mco-kin-600);
  filter: grayscale(22%);
}

.mco-article__byline {
  margin: 0;
  font-size: 13px;
  color: var(--mco-sumi-500);
}

/* ---------- 目次 ---------- */
.mco-toc {
  margin: 40px 0 56px;
  padding: 28px 0;
  border-top: 1px solid var(--mco-line);
  border-bottom: 1px solid var(--mco-line);
}

.mco-toc__title {
  margin: 0 0 16px;
  font-family: var(--mco-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--mco-kin-600);
}

.mco-toc ol {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: mcotoc;
}

.mco-toc li {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.7;
}

.mco-toc li.lv2::before {
  counter-increment: mcotoc;
  content: counter(mcotoc, decimal-leading-zero);
  font-family: var(--mco-mono);
  font-size: 11px;
  color: var(--mco-kin-600);
  margin-right: 12px;
}

.mco-toc li.lv3 {
  padding-left: 34px;
  font-size: 14px;
  color: var(--mco-sumi-500);
}

.mco-toc a {
  color: var(--mco-ink-900);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.mco-toc a:hover {
  border-bottom-color: var(--mco-kin-600);
}

/* ---------- 本文 ---------- */
.mco-article__body h2 {
  font-family: var(--mco-serif);
  font-weight: 600;
  font-size: clamp(21px, 3vw, 27px);
  line-height: 1.6;
  letter-spacing: -0.01em;
  color: var(--mco-ink-900);
  margin: 72px 0 24px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--mco-line);
}

.mco-article__body h3 {
  font-family: var(--mco-serif);
  font-weight: 600;
  font-size: 19px;
  line-height: 1.7;
  color: var(--mco-ink-900);
  margin: 48px 0 16px;
  padding-left: 14px;
  border-left: 2px solid var(--mco-kin-600);
}

.mco-article__body p {
  margin: 0 0 26px;
}

.mco-article__body strong {
  font-weight: 600;
  color: var(--mco-ink-900);
}

.mco-article__body a {
  color: var(--mco-ink-900);
  text-decoration: none;
  border-bottom: 1px solid var(--mco-kin-600);
  padding-bottom: 1px;
}

.mco-article__body a:hover {
  background: rgba(176, 141, 87, 0.08);
}

.mco-article__body ul,
.mco-article__body ol {
  margin: 0 0 26px;
  padding-left: 1.4em;
}

.mco-article__body li {
  margin-bottom: 10px;
}

.mco-article__body ul li::marker {
  color: var(--mco-kin-600);
}

.mco-article__body ol li::marker {
  font-family: var(--mco-mono);
  font-size: 13px;
  color: var(--mco-kin-600);
}

.mco-article__body blockquote {
  margin: 32px 0;
  padding: 4px 0 4px 24px;
  border-left: 2px solid var(--mco-line);
  color: var(--mco-sumi-500);
  font-size: 16px;
}

/* ---------- 冒頭の直答ブロック（AIに抜かれる塊） ---------- */
.mco-answer {
  margin: 48px 0 56px;
  padding: 32px 0 8px;
  border-top: 2px solid var(--mco-ink-900);
  border-bottom: 1px solid var(--mco-line);
}

.mco-answer h2 {
  margin: 0 0 16px;
  padding: 0;
  border: 0;
  font-size: 15px;
  font-family: var(--mco-sans);
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--mco-kin-600);
}

.mco-answer p {
  font-size: 18px;
  line-height: 1.95;
  color: var(--mco-ink-900);
}

/* ---------- 表 ---------- */
.mco-article__body table {
  width: 100%;
  margin: 8px 0 36px;
  border-collapse: collapse;
  font-size: 15px;
  line-height: 1.75;
}

.mco-article__body thead th {
  background: var(--mco-ink-900);
  color: #fff;
  font-weight: 500;
  text-align: left;
  padding: 12px 14px;
  border: 1px solid var(--mco-ink-900);
  white-space: nowrap;
}

.mco-article__body tbody td {
  padding: 12px 14px;
  border: 1px solid var(--mco-line);
  vertical-align: top;
}

.mco-article__body tbody tr:nth-child(even) td {
  background: var(--mco-sumi-50);
}

/* 表は横スクロールで逃がす（スマホで本文をはみ出させない） */
.mco-article__body .mco-table-scroll {
  overflow-x: auto;
  margin: 8px 0 36px;
}

/* ---------- 図版 ---------- */
.mco-figure {
  margin: 40px 0;
}

.mco-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-top: 1px solid var(--mco-kin-600);
}

.mco-figure figcaption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mco-sumi-500);
}

/* ---------- FAQ ---------- */
.mco-article__body h3.mco-faq-q {
  font-family: var(--mco-sans);
  font-size: 17px;
  font-weight: 600;
  border-left: 2px solid var(--mco-ink-900);
}

/* ---------- スマホ ---------- */
@media (max-width: 640px) {
  .mco-article {
    padding: 0 20px 72px;
    font-size: 16px;
    line-height: 1.85;
  }

  .mco-article__head {
    padding-top: 48px;
  }

  .mco-article__body h2 {
    margin-top: 56px;
  }

  .mco-article__body table {
    font-size: 14px;
  }

  .mco-article__body thead th,
  .mco-article__body tbody td {
    padding: 10px;
  }
}

/* ---------- 一覧ページ（/insights） ---------- */
.mco-insights-list {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 24px 96px;
  font-family: var(--mco-sans);
  color: var(--mco-sumi-700);
}

.mco-insights-list__item {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 28px;
  padding: 32px 0;
  border-bottom: 1px solid var(--mco-line);
}

.mco-insights-list__item img {
  width: 100%;
  height: auto;
  filter: grayscale(22%);
  border-top: 1px solid var(--mco-kin-600);
}

.mco-insights-list__meta {
  font-family: var(--mco-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mco-sumi-500);
  margin: 0 0 10px;
}

.mco-insights-list__title {
  font-family: var(--mco-serif);
  font-weight: 600;
  font-size: 20px;
  line-height: 1.6;
  color: var(--mco-ink-900);
  margin: 0 0 10px;
}

.mco-insights-list__desc {
  font-size: 14px;
  line-height: 1.8;
  color: var(--mco-sumi-500);
  margin: 0;
}

@media (max-width: 640px) {
  .mco-insights-list__item {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}

/* ============================================================
   図版コンポーネント（.mco-dg-*）
   本文中の図解は画像ではなくHTMLで組む。理由:
   ①日本語の文字を画像生成AIが正しく描けない
   ②図の中の文字がテキストとして残り、AIクローラと検索エンジンに読まれる
   ③スマホで拡大しなくても読める
   使ってよいのはここで定義したクラスだけ。インラインstyleは書かない。
   ============================================================ */

.mco-figure--diagram {
  margin: 44px 0;
}

.mco-dg {
  padding: 28px 24px;
  border: 1px solid var(--mco-line);
  border-top: 2px solid var(--mco-ink-900);
  background: #fff;
}

.mco-dg__title {
  margin: 0 0 22px;
  font-family: var(--mco-sans);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--mco-ink-900);
}

.mco-dg__note {
  margin: 20px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--mco-line);
  font-size: 13px;
  line-height: 1.75;
  color: var(--mco-sumi-500);
}

/* ---- 横フロー: 工程・ステップ ---- */
.mco-dg-flow {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 0;
}

.mco-dg-flow__step {
  flex: 1 1 130px;
  min-width: 130px;
  padding: 16px 14px;
  border: 1px solid var(--mco-line);
  border-left-width: 0;
}

.mco-dg-flow__step:first-child {
  border-left-width: 1px;
}

.mco-dg-flow__step .n {
  display: block;
  font-family: var(--mco-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--mco-kin-600);
  margin-bottom: 8px;
}

.mco-dg-flow__step .t {
  display: block;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--mco-ink-900);
  margin-bottom: 6px;
}

.mco-dg-flow__step .d {
  display: block;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mco-sumi-700);
}

.mco-dg-flow__step--ai {
  background: var(--mco-sumi-50);
}

.mco-dg-flow__step--ai .n {
  color: var(--mco-ink-900);
}

/* ---- 縦レイヤー: 階層・構成 ---- */
.mco-dg-layers {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.mco-dg-layer {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 18px;
  padding: 16px 0;
  border-bottom: 1px solid var(--mco-line);
}

.mco-dg-layer:first-child {
  border-top: 1px solid var(--mco-line);
}

.mco-dg-layer .l {
  font-size: 14px;
  font-weight: 600;
  color: var(--mco-ink-900);
  border-left: 2px solid var(--mco-kin-600);
  padding-left: 12px;
}

.mco-dg-layer .r {
  font-size: 14px;
  line-height: 1.8;
  color: var(--mco-sumi-700);
}

/* ---- 対比: 成功/失敗・可/不可 ---- */
.mco-dg-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.mco-dg-compare__col {
  padding: 18px;
  border: 1px solid var(--mco-line);
}

.mco-dg-compare__col h4 {
  margin: 0 0 14px;
  padding: 0 0 10px;
  border-bottom: 1px solid var(--mco-line);
  font-family: var(--mco-sans);
  font-size: 14px;
  font-weight: 600;
  color: var(--mco-ink-900);
}

.mco-dg-compare__col--ok {
  border-top: 2px solid var(--mco-ink-900);
}

.mco-dg-compare__col--ng {
  border-top: 2px solid var(--mco-kin-600);
  background: var(--mco-sumi-50);
}

.mco-dg-compare__col ul {
  margin: 0;
  padding-left: 1.2em;
}

.mco-dg-compare__col li {
  margin-bottom: 8px;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--mco-sumi-700);
}

/* ---- マトリクス: 表形式の図解 ---- */
.mco-dg-matrix {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  line-height: 1.7;
}

.mco-dg-matrix th {
  background: var(--mco-ink-900);
  color: #fff;
  font-weight: 500;
  text-align: left;
  padding: 11px 12px;
  border: 1px solid var(--mco-ink-900);
}

.mco-dg-matrix th[scope="row"] {
  background: var(--mco-sumi-50);
  color: var(--mco-ink-900);
  border: 1px solid var(--mco-line);
  white-space: nowrap;
}

.mco-dg-matrix td {
  padding: 11px 12px;
  border: 1px solid var(--mco-line);
  vertical-align: top;
  color: var(--mco-sumi-700);
}

.mco-dg-matrix .mark {
  font-family: var(--mco-mono);
  font-size: 13px;
  color: var(--mco-ink-900);
}

/* ---- 番号付きの要点リスト ---- */
.mco-dg-list {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: dg;
}

.mco-dg-list > li {
  counter-increment: dg;
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--mco-line);
  font-size: 14px;
  line-height: 1.8;
}

.mco-dg-list > li::before {
  content: counter(dg, decimal-leading-zero);
  font-family: var(--mco-mono);
  font-size: 12px;
  color: var(--mco-kin-600);
  padding-top: 3px;
}

.mco-dg-list b {
  display: block;
  color: var(--mco-ink-900);
  font-weight: 600;
  margin-bottom: 3px;
}

/* ---- 図版のスマホ対応 ---- */
@media (max-width: 640px) {
  .mco-dg {
    padding: 22px 16px;
  }

  .mco-dg-flow__step {
    flex: 1 1 100%;
    border-left-width: 1px;
    border-top-width: 0;
  }

  .mco-dg-flow__step:first-child {
    border-top-width: 1px;
  }

  .mco-dg-compare {
    grid-template-columns: 1fr;
  }

  .mco-dg-layer {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .mco-dg-matrix {
    font-size: 13px;
  }

  .mco-dg--scroll {
    overflow-x: auto;
  }

  .mco-dg--scroll .mco-dg-matrix {
    min-width: 520px;
  }
}


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