/* 研磨事例 詳細（single-case_study.php）— 加工情報を表題欄として先に、課題と成果を1行ずつ対に
   デザイン: clients/barrel-polish/design/2026-10-06_renewal/build_a_sub2.py detail_page() */

/* h1 の「｜〜研磨事例」は小さく */
.rn-case__h1-sub { font-size: .62em; }

/* カテゴリーのタグ（研磨事例カテゴリーへのリンク） */
.rn-case__tags { display: flex; flex-wrap: wrap; gap: 8px; }
.rn-case__tag { padding: 6px 14px; border: 1px solid rgba(17, 18, 20, 0.25); font-size: 13px; line-height: 1.4; color: var(--rn-ink); text-decoration: none; transition: border-color .2s, background .2s; }
.rn-case__tag:hover { border-color: var(--rn-ink); }
.rn-case__tags--hero .rn-case__tag { border-color: rgba(255, 255, 255, 0.35); color: #fff; }
.rn-case__tags--hero .rn-case__tag:hover { border-color: #fff; }

/* ---- 加工情報（表題欄） ---- */
.rn-case__facts { position: relative; background: var(--rn-ink2); border-top: 1px solid rgba(179, 143, 45, 0.5); color: #fff; }
.rn-case__facts .rn-inner { padding-bottom: 30px; }
.rn-case__facts-head { display: flex; align-items: baseline; gap: 8px; padding: 18px 0 4px; }
.rn-case__facts-head span { font-size: 10.5px; color: var(--rn-gold-on-dark); }
.rn-case__facts-head h2 { margin: 0; font-size: 13px; font-weight: 700; color: rgba(255, 255, 255, 0.85); }
.rn-case__facts-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); grid-auto-flow: row dense; }
.rn-case__fact { padding: 18px 24px 20px; border-left: 1px solid var(--rn-line-dark); }
.rn-case__fact--long { grid-column: span 2; border-top: 1px solid var(--rn-line-dark); }
.rn-case__fact-en { display: block; font-size: 10.5px; color: var(--rn-gold-on-dark); }
.rn-case__fact-ja { display: block; margin: 2px 0 0; font-size: 12.5px; font-weight: 400; color: rgba(255, 255, 255, 0.7); }
.rn-case__fact-val { margin-top: 6px; font-size: 21px; line-height: 1.5; color: #fff; overflow-wrap: anywhere; }
.rn-case__fact--long .rn-case__fact-val { font-size: 14px; line-height: 1.9; color: rgba(255, 255, 255, 0.88); }
.rn-case__fact--long .rn-case__fact-val p + p { margin-top: .6em; }
.rn-case__fact--industry .rn-case__fact-val { font-size: 15px; font-weight: 700; line-height: 1.7; }
.rn-case__facts-id { position: absolute; right: var(--rn-pad); bottom: 8px; font-size: 9.5px; color: rgba(255, 255, 255, 0.45); }

/* ---- Before / After（60° の線で斜めに分ける） ---- */
.rn-case__ba { position: relative; margin-top: 40px; }
.rn-case__ba--pair { aspect-ratio: 1296 / 520; }
.rn-case__ba--pair .rn-case__ba-item { position: absolute; inset: 0; margin: 0; }
.rn-case__ba--pair .rn-case__ba-item--after { clip-path: polygon(58.64% 0, 100% 0, 100% 100%, 35.49% 100%); }
.rn-case__ba-img { display: block; width: 100%; height: 100%; max-width: none; object-fit: cover; }
.rn-case__ba--single .rn-case__ba-item { position: relative; margin: 0; }
.rn-case__ba--single .rn-case__ba-img { height: auto; max-height: 640px; }
.rn-case__ba-line { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
.rn-case__ba-label { position: absolute; left: 24px; top: 22px; padding: 6px 12px; background: var(--rn-ink); color: #fff; font-size: 11px; line-height: 1.5; }
.rn-case__ba-label--after { left: auto; right: 24px; color: var(--rn-gold-on-dark); }
.rn-case__ba-foot { display: flex; justify-content: space-between; align-items: center; gap: 16px 32px; flex-wrap: wrap; margin-top: 18px; }
.rn-case__ba-foot .rn-case__tags { margin-left: auto; justify-content: flex-end; }

/* ---- 課題と成果（2列のグリッドに、課題の列と成果の列を行ごとに並べる） ---- */
.rn-case__pair { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); column-gap: 80px; margin-top: 44px; border-bottom: 1px solid var(--rn-line-light); }
.rn-case__pair--single { grid-template-columns: minmax(0, 1fr); }
.rn-case__pair-col { display: contents; }
.rn-case__pair-col > * { grid-row: var(--r); }
.rn-case__pair-col--problem > * { grid-column: 1; }
.rn-case__pair--pair .rn-case__pair-col--result > * { grid-column: 2; }
.rn-case__pair-head { display: flex; align-items: baseline; gap: 8px; padding-bottom: 12px; }
.rn-case__pair-col--problem .rn-case__pair-head { padding-left: 60px; }
.rn-case__pair-head span { font-size: 11px; color: rgba(17, 18, 20, 0.65); }
.rn-case__pair-head h2 { font-size: 13px; font-weight: 700; color: var(--rn-ink); }
.rn-case__pair-item { position: relative; display: flex; align-items: center; padding: 26px 0; border-top: 1px solid var(--rn-line-light); }
.rn-case__pair-item.has-result { margin-right: -80px; padding-right: 80px; }
.rn-case__pair-num { width: 60px; flex-shrink: 0; font-size: 30px; font-weight: 500; line-height: 1; }
.rn-case__pair-body { flex: 1; min-width: 0; }
.rn-case__pair-body h3 { font-size: 19px; line-height: 1.5; }
.rn-case__pair-text { margin-top: 6px; font-size: 13.5px; line-height: 1.85; color: var(--rn-sub-light); }
.rn-case__pair-text p + p { margin-top: .5em; }
.rn-case__pair-text--result { color: var(--rn-ink); }
.rn-case__pair-arrow { position: absolute; right: 12px; top: 50%; display: flex; color: var(--rn-gold); transform: translateY(-50%); }

/* ---- 本文欄 ---- */
.rn-case__prose { max-width: 820px; margin-top: 48px; }

/* ---- 解決アプローチ（滑り層の角度で段ずらし）＋技術的なポイント ---- */
.rn-case__steps { --row: 112px; position: relative; margin-top: 40px; }
.rn-case__steps::before { content: ""; position: absolute; left: -18px; top: 0; width: 1.5px; height: 100%; background: var(--rn-gold); transform-origin: top left; transform: skewX(30deg); }
.rn-case__step { display: flex; align-items: center; gap: 30px; min-height: var(--row); margin-left: calc(var(--i) * var(--row) * 0.57735); border-top: 1px solid var(--rn-line-dark); }
.rn-case__step:last-child { border-bottom: 1px solid var(--rn-line-dark); }
.rn-case__step-num { width: 60px; flex-shrink: 0; font-size: 46px; font-weight: 500; line-height: 1; color: var(--rn-gold-on-dark); }
.rn-case__step-title { width: 380px; flex-shrink: 0; font-size: 21px; line-height: 1.5; color: #fff; }
.rn-case__step-text { flex: 1; min-width: 0; padding: 16px 0; font-size: 13.5px; line-height: 1.9; color: var(--rn-sub-dark); }
.rn-case__step-text p + p { margin-top: .5em; }
.rn-case__points-head { display: flex; align-items: baseline; gap: 8px; margin-top: 56px; }
.rn-case__points-head span { font-size: 11px; color: var(--rn-gold-on-dark); }
.rn-case__points-head h2 { font-size: 13px; font-weight: 700; color: #fff; }
.rn-case__points { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 40px; margin-top: 16px; }
.rn-case__point { padding-top: 18px; border-top: 1px solid var(--rn-gold); }
.rn-case__point-num { display: block; font-size: 10.5px; color: var(--rn-gold-on-dark); }
.rn-case__point h3 { margin-top: 6px; font-size: 18px; line-height: 1.55; color: #fff; }
.rn-case__point p { margin-top: 6px; font-size: 13px; line-height: 1.85; color: var(--rn-sub-dark); }

/* ---- この事例をもとに相談する ---- */
.rn-case__ask-wrap { padding-bottom: clamp(56px, 6vw, 80px); }
.rn-case__ask { display: flex; align-items: center; justify-content: space-between; gap: 40px; padding: 34px 40px; border: 1px solid var(--rn-ink); }
.rn-case__ask-en { font-size: 11px; color: var(--rn-ink); }
.rn-case__ask-title { margin-top: 8px; font-size: clamp(19px, 1.6vw, 22px); line-height: 1.6; }
.rn-case__ask-btn { flex-shrink: 0; min-height: 58px; padding: 0 28px; }
.rn-case__ask-btn .rn-arrow { color: var(--rn-gold-on-dark); }

@media (max-width: 1100px) {
  .rn-case__step { margin-left: calc(var(--i) * 28px); }
  .rn-case__steps::before { display: none; }
  .rn-case__step-title { width: 280px; }
}
@media (max-width: 900px) {
  .rn-case__facts-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .rn-case__fact { padding: 14px 14px 16px; border-top: 1px solid var(--rn-line-dark); }
  .rn-case__fact:nth-child(odd) { border-left: 0; padding-left: 0; }
  .rn-case__fact--long, .rn-case__fact--industry { grid-column: 1 / -1; border-left: 0; padding-left: 0; }
  .rn-case__fact-val { font-size: 17px; }
  .rn-case__facts .rn-inner { padding-bottom: 34px; }

  .rn-case__ba--pair { aspect-ratio: auto; display: grid; gap: 12px; }
  .rn-case__ba--pair .rn-case__ba-item { position: relative; inset: auto; aspect-ratio: 16 / 10; }
  .rn-case__ba--pair .rn-case__ba-item--after { clip-path: none; }
  .rn-case__ba-line { display: none; }
  .rn-case__ba-label { left: 12px; top: 12px; font-size: 10px; }
  .rn-case__ba-label--after { left: 12px; right: auto; }
  .rn-case__ba-foot .rn-case__tags { margin-left: 0; justify-content: flex-start; }
  .rn-case__ba-foot .rn-note { display: none; }

  .rn-case__pair, .rn-case__pair--pair { grid-template-columns: minmax(0, 1fr); margin-top: 32px; }
  .rn-case__pair-col > *, .rn-case__pair--pair .rn-case__pair-col--result > * { grid-column: 1; grid-row: auto; }
  .rn-case__pair-col--result .rn-case__pair-head { margin-top: 36px; }
  .rn-case__pair-col--problem .rn-case__pair-head { padding-left: 0; }
  .rn-case__pair-item.has-result { margin-right: 0; padding-right: 0; }
  .rn-case__pair-arrow { display: none; }
  .rn-case__pair-item { align-items: flex-start; padding: 20px 0; }
  .rn-case__pair-num { width: 44px; font-size: 24px; }
  .rn-case__pair-body h3 { font-size: 17px; }
  .rn-case__pair-text br { display: none; }

  .rn-case__step { flex-wrap: wrap; gap: 8px 16px; margin-left: calc(var(--i) * 10px); padding: 20px 0; }
  .rn-case__step-num { width: auto; font-size: 32px; }
  .rn-case__step-title { width: auto; flex: 1; font-size: 18px; }
  .rn-case__step-text { flex-basis: 100%; padding: 0; }
  .rn-case__points { grid-template-columns: 1fr; gap: 24px; }

  .rn-case__ask { flex-direction: column; align-items: stretch; gap: 20px; padding: 24px 20px; }
  .rn-case__ask-title { font-size: 17px; }
  .rn-case__ask-btn { justify-content: space-between; }
}