/* レグテック入門記事：実務の温度が伝わる写真と、読み飛ばしても分かる図解 */
.rg-guide { --rg-blue: #267fc6; --rg-pale: #edf7ff; --rg-ink: #17314d; }
.rg-guide h3 { margin: 38px 0 14px; color: var(--ink-900); font-size: 19px; line-height: 1.65; font-weight: 800; }

/* 冒頭の要約。3つの判断材料に分ける */
.rg-summary { margin: 34px 0 54px; padding: 26px; border: 1px solid #cfe5f6; border-radius: 22px; background: linear-gradient(135deg,#f6fafb,var(--rg-pale)); }
.rg-summary > p { display: flex; align-items: center; gap: 10px; color: var(--rg-ink); }
.rg-summary > p::before { content: ""; width: 32px; height: 4px; border-radius: 9px; background: var(--signal); }
.rg-summary ul { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 12px; margin-top: 20px; counter-reset: summary; }
.bl-article .rg-summary li { counter-increment: summary; min-width: 0; padding: 18px 16px 18px 46px; border-radius: 14px; background: rgba(255,255,255,.86); box-shadow: 0 8px 22px rgba(35,87,127,.06); font-size: 15px; line-height: 1.75; }
.bl-article .rg-summary li + li { margin-top: 0; }
.bl-article .rg-summary li::before { content: counter(summary,decimal-leading-zero); left: 15px; top: 17px; width: auto; height: auto; border-radius: 0; background: none; box-shadow: none; font-family: var(--f-mono); font-size: 12px; font-weight: 700; color: var(--rg-blue); }

/* 写真は情報図ではなく、現場の空気を伝える */
.rg-figure { margin: 40px 0 46px; }
.rg-figure img { display: block; width: 100%; height: auto; border-radius: 20px; background: #dfeaf2; }
.rg-figure.is-photo img { aspect-ratio: 3 / 2; object-fit: cover; box-shadow: 0 20px 45px rgba(18,44,74,.12); }
.rg-figure figcaption { display: grid; grid-template-columns: 128px 1fr; gap: 18px; margin: 14px 4px 0; font-size: 13px; line-height: 1.75; color: var(--ink-500); }
.rg-figure figcaption b { color: var(--rg-blue); font-family: var(--f-mono); font-size: 11px; letter-spacing: .08em; }

.rg-example { margin: 30px 0; padding: 22px 24px; border-left: 4px solid var(--rg-blue); border-radius: 0 14px 14px 0; background: #f1f6f7; }
.rg-example p + p { margin-top: 10px; }

/* 4つの活用例。長い本文の中でも見出しだけ追える */
.rg-usecases { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 14px; margin: 30px 0 36px; }
.rg-usecase { padding: 22px; border: 1px solid #dbe6ee; border-radius: 18px; background: #fff; }
.rg-usecase h3 { margin: 0 0 14px; font-size: 17px; }
.rg-usecase h3 span { display: block; margin-bottom: 9px; font-family: var(--f-mono); font-size: 12px; letter-spacing: .08em; color: var(--rg-blue); }
.rg-usecase p { font-size: 15px; line-height: 1.85; }
.rg-usecase p + p { margin-top: 12px; }

.rg-flow { display: grid; grid-template-columns: minmax(0,1fr) 18px minmax(0,1fr) 18px minmax(0,1fr) 18px minmax(0,1fr); align-items: stretch; gap: 4px; margin: 36px 0; padding: 22px; border-radius: 18px; background: linear-gradient(120deg,#ecf6f7,#f7fafb); }
.rg-flow p { display: grid; align-content: center; width: 100%; margin: 0; padding: 16px 10px; border: 1px solid #c9dfef; border-radius: 12px; background: #fff; text-align: center; line-height: 1.5; }
.rg-flow p span { display: block; margin-top: 7px; font-size: 12px; color: var(--ink-500); }
.rg-flow > span { display: grid; place-items: center; color: var(--rg-blue); transform: rotate(-90deg); }

/* 導入手順は文章のタイムラインで示す */
.rg-steps { margin: 28px 0 36px; }
.rg-step { position: relative; margin-left: 18px; padding: 4px 0 30px 34px; border-left: 1px solid #bcd6e8; }
.rg-step:last-child { padding-bottom: 8px; }
.rg-step::before { content: ""; position: absolute; left: -6px; top: 12px; width: 11px; height: 11px; border: 3px solid #fff; border-radius: 50%; background: var(--rg-blue); box-shadow: 0 0 0 1px var(--rg-blue); }
.rg-step h3 { margin: 0 0 8px; font-size: 18px; }
.rg-step h3 span { display: block; margin-bottom: 5px; font-family: var(--f-mono); font-size: 11px; letter-spacing: .12em; color: var(--rg-blue); }
.rg-step p { font-size: 16px; }

/* 選定項目。項目名と確認内容の強弱を明確にする */
.bl-article .rg-checklist { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 12px; margin: 28px 0; }
.bl-article .rg-checklist li { padding: 18px 18px 18px 48px; border: 1px solid #dbe6ee; border-radius: 14px; background: #fff; font-size: 15px; line-height: 1.75; }
.bl-article .rg-checklist li + li { margin-top: 0; }
.bl-article .rg-checklist li::before { content: "✓"; left: 16px; top: 19px; display: grid; place-items: center; width: 21px; height: 21px; border-radius: 50%; background: var(--rg-blue); box-shadow: none; color: #fff; font-size: 12px; font-weight: 800; }
.rg-checklist b, .rg-checklist span { display: block; }
.rg-checklist span { margin-top: 4px; color: var(--ink-500); }

/* FAQは質問を一覧し、必要な答えだけ開ける */
.rg-faqs { margin: 28px 0 44px; border-top: 1px solid var(--line); }
.rg-faq { border-bottom: 1px solid var(--line); }
.rg-faq summary { position: relative; padding: 22px 52px 22px 4px; cursor: pointer; list-style: none; font-size: 17px; font-weight: 800; line-height: 1.65; color: var(--ink-900); }
.rg-faq summary::-webkit-details-marker { display: none; }
.rg-faq summary::after { content: "+"; position: absolute; right: 4px; top: 20px; display: grid; place-items: center; width: 30px; height: 30px; border: 1px solid #c9dbe8; border-radius: 50%; font-family: var(--f-mono); font-size: 16px; color: var(--rg-blue); }
.rg-faq[open] summary::after { content: "−"; }
.rg-faq > p { margin: 0; padding: 0 52px 24px 4px; color: var(--ink-600); }

.rg-closing { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 10px; margin: 30px 0; padding: 26px; border: 1px solid #cfe3f2; border-radius: 18px; background: var(--rg-pale); text-align: center; }
.rg-closing b { padding: 7px 12px; border-radius: 999px; background: #fff; color: var(--rg-ink); }
.rg-closing span { color: var(--rg-blue); }

.rg-guide caption { text-align: left; padding-bottom: 12px; font-size: 14px; font-weight: 700; }
.rg-guide .rg-note { margin-top: 30px; padding-top: 20px; border-top: 1px solid var(--line); font-size: 13px; line-height: 1.9; color: var(--ink-500); }

@media (max-width: 767px) {
  .rg-summary { margin: 28px 0 42px; padding: 20px; }
  .rg-summary ul, .rg-usecases, .bl-article .rg-checklist { grid-template-columns: 1fr; }
  .rg-guide h3 { font-size: 18px; }
  .rg-figure { margin: 32px 0 38px; }
  .rg-figure img { border-radius: 14px; }
  .rg-figure figcaption { grid-template-columns: 1fr; gap: 4px; margin-inline: 2px; }
  .rg-flow { grid-template-columns: 1fr; padding: 18px; }
  .rg-flow > span { transform: none; }
  .rg-usecase { padding: 19px; }
  .rg-step { margin-left: 8px; padding-left: 26px; }
  .rg-example { padding: 18px; }
  .rg-faq summary { padding-right: 46px; font-size: 16px; }
  .rg-faq > p { padding-right: 4px; }
  .rg-closing { padding: 22px 16px; }
}