/* ════════════════════════════════════════
   case.css — 事例ページ固有（common.css の上に重ねる）
════════════════════════════════════════ */

h1 { margin-top: 14px; font-size: clamp(40px, 4.4vw, 68px); line-height: 1.2; letter-spacing: -0.02em; }

/* 本文とキャプチャを左右に並べる */
.split {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 2fr);
  gap: 56px;
  align-items: start;
  margin-top: 56px;
}
.split--wide { grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); }
.split--even { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }

/* 横長の画面。PC では幅に収め、スマホでは縮めずに置いて横スクロールで読む（下の MOBILE） */
.scroll-hint { display: none; }

/* ─── 1. 冒頭 ─── */
.intro {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: 56px;
  align-items: center;
  padding-top: 80px;
}
.intro .lead { margin-top: 28px; font-size: 21px; }
.intro .ledger { max-width: 520px; margin-top: 28px; font-size: 20px; }

.intro-stage { position: relative; padding-bottom: 17%; }
.intro-stage .shot { width: 86%; }
.intro-phone { position: absolute; right: 0; top: 22%; width: 25%; }
.intro-shots figcaption { margin-top: 16px; }

/* ─── 2. 書類の流れ ─── */
.flow-before { margin-top: 56px; }
.before { --copy-w: 96px; display: flex; align-items: center; list-style: none; }
.before li { flex: 1 1 0; min-width: 0; display: flex; align-items: center; }
/* 先頭だけ「書き写す」が付かないので、紙の幅がそろうように幅を決める */
.before li:first-child { flex: 0 0 calc((100% - 4 * var(--copy-w)) / 5); }
.paper {
  flex: 1;
  min-width: 0;
  height: 88px;
  padding: 0 8px;
  display: flex; align-items: center; justify-content: center;
  text-align: center;
  line-height: 1.4;
  font-size: 18px;
  color: var(--ink-sub);
  background: rgba(255, 255, 255, 0.55);
  border: 1px dashed var(--ink-sub);
}
.copy {
  flex: none;
  width: var(--copy-w);
  margin-top: 22px;
  padding-top: 4px;
  border-top: 1px dashed var(--ink-sub);
  text-align: center;
  font-size: 14px;
  color: var(--ink-sub);
}

.flow-app { margin-top: 48px; }
.route-wrap { position: relative; }
.route {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  list-style: none;
  background: var(--card);
  border: 1px solid var(--ink);
}
.route li { position: relative; padding: 14px 18px 20px; border-left: 1px solid var(--ink); }
.route li:first-child { border-left: 0; }
/* 前の書類から次の書類へ */
.route li + li::before {
  content: "";
  position: absolute; left: -8px; top: 50%;
  width: 14px; height: 14px;
  background: var(--card);
  border-top: 1px solid var(--ink);
  border-right: 1px solid var(--ink);
  transform: translateY(-50%) rotate(45deg);
}
.route .doc { display: block; font-size: 14px; color: var(--ink-sub); }
.route .no { display: block; margin-top: 2px; font-family: var(--code); font-size: 24px; line-height: 1.4; white-space: nowrap; }
.route .what { display: block; margin-top: 10px; font-size: 16px; line-height: 1.7; }

.stamp {
  position: absolute;
  z-index: 1;
  right: -10px; top: -64px;
  width: 112px; height: 112px;
  display: flex; align-items: center; justify-content: center;
  text-align: center;
  font-size: 20px; font-weight: 800; line-height: 1.25;
  color: var(--accent);
  background: rgba(255, 255, 255, 0.7);
  border: 4px solid var(--accent);
  border-radius: 50%;
  transform: rotate(-12deg);
}
.flow-close { margin-top: 48px; }

/* ─── 3. 値付け ─── */
.slip {
  padding: 18px 26px 12px;
  background: var(--card);
  border: 1px solid var(--ink);
  box-shadow: var(--shift) var(--shift) 0 var(--line);
}
.slip table { width: 100%; border-collapse: collapse; }
.slip th, .slip td { padding: 10px 0; text-align: left; vertical-align: baseline; }
.slip th { padding-right: 12px; font-size: 17px; font-weight: 400; color: var(--ink-sub); white-space: nowrap; }
.slip .num { padding-right: 16px; font-family: var(--code); font-size: 26px; text-align: right; white-space: nowrap; }
.slip .why { font-size: 16px; line-height: 1.5; color: var(--ink-sub); }
.slip .total th, .slip .total td { border-top: 1px solid var(--ink); }
.slip .total th { font-weight: 700; color: var(--ink); }
.slip .is-red .num { color: var(--accent); }
.slip .is-answer .num { font-size: 32px; font-weight: 700; }
.side-note { margin-top: 32px; font-size: 17px; color: var(--ink-sub); }

.ranks-block, .kinds-block { margin-top: 44px; }
.ranks { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.ranks > div { display: flex; align-items: baseline; gap: 12px; padding: 8px 18px; }
.ranks dt { font-size: 22px; font-weight: 800; }
.ranks dd { font-family: var(--code); font-size: 24px; }

/* ─── 4. 仕訳 ─── */
.kinds { grid-template-columns: repeat(6, auto); }
.kinds li { padding: 10px 8px; text-align: center; white-space: nowrap; }

/* ─── 6. 帳票 ─── */
.doc-labels {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 14px;
  list-style: none;
}
.doc-labels li { padding-left: 4px; font-size: 18px; font-weight: 700; }

/* ─── 7. AI 連携 ─── */
.steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 44px;
  margin-top: 56px;
  list-style: none;
}
.steps li { position: relative; padding: 16px 20px 18px; background: var(--card); border: 1px solid var(--ink); }
.steps li + li::before {
  content: "→";
  content: "→" / "";
  position: absolute; left: -36px; top: 50%;
  transform: translateY(-50%);
  font-size: 26px; line-height: 1;
  color: var(--ink-sub);
}
.steps .who { display: block; font-size: 24px; font-weight: 800; }
.steps .does { display: block; margin-top: 6px; font-size: 16px; line-height: 1.6; color: var(--ink-sub); }
.steps .is-human { background: var(--ink); color: var(--card); }
.steps .is-human .does { color: #c8d3de; }
.approval { margin-top: 40px; }

/* ─── 8. 品質と技術 ─── */
.quality .row-label + * { margin-bottom: 44px; }
.ledger--scale { font-size: 20px; }
.ledger--scale dd { font-family: var(--code); }
.ledger--scale dd.is-text { font-family: inherit; }
.stack > div {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr);
  gap: 8px;
  padding: 8px 0;
  border-bottom: 1px solid var(--line);
}
.stack dt { font-size: 16px; font-weight: 700; color: var(--ink-sub); }
.stack dd { font-size: 18px; }
.phones { max-width: 520px; margin: 0 auto; }
.phones figcaption { margin-top: 24px; font-size: 18px; color: var(--ink-sub); }

/* ─── 9. 締め ─── */
.closing { padding-top: 120px; padding-bottom: 120px; }
/* 1カラム。ボタンは文章の下に左揃え */
.closing-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 32px;
  padding: 40px 48px;
  background: var(--card);
  border: 1px solid var(--ink);
  box-shadow: var(--shift) var(--shift) 0 var(--line);
}
.closing-card p { max-width: 36em; font-size: 20px; }
/* 2段落目は読み手（他社）に向けた内容なので罫線で区切る */
.closing-card .closing-next { margin-top: 24px; padding-top: 24px; border-top: 1px solid var(--line); }
/* ════════════════════════
   TABLET (≤ 1100px)
════════════════════════ */
@media (max-width: 1100px) {
  .intro { grid-template-columns: minmax(0, 1fr); gap: 48px; }
  .intro-shots { max-width: 760px; }
  .before { --copy-w: 64px; }
  .route { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .route li:nth-child(n+4) { border-top: 1px solid var(--ink); }
  .route li:nth-child(3n+1) { border-left: 0; }
  .route li:nth-child(3n+1)::before { display: none; }
  .split, .split--wide, .split--even { grid-template-columns: minmax(0, 1fr); gap: 48px; }
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .steps li:nth-child(3)::before { display: none; }
}

/* ════════════════════════
   MOBILE (≤ 768px)
════════════════════════ */
@media (max-width: 768px) {
  h1 { font-size: 40px; }
  .intro .lead { font-size: 17px; }
  .split, .split--wide, .split--even { margin-top: 36px; gap: 40px; }

  /* 横長の画面は中の文字が読める幅で置き、指で横に動かす。スクロールバーは隠さない。
     右下のずらした面が切れないよう、その分だけ内側に余白をとる */
  .scroll-x { --scroll-w: 1000px; overflow-x: auto; padding: 0 var(--shift) var(--shift) 0; }
  .scroll-x--wide { --scroll-w: 1600px; }
  .scroll-x > * { width: var(--scroll-w); max-width: none; }
  .scroll-hint { display: block; margin-top: 6px; font-size: 13px; text-align: center; color: var(--ink-sub); }

  .intro { padding-top: 48px; gap: 40px; }
  .intro .ledger { font-size: 17px; }
  .intro-stage { padding-bottom: 23%; }
  .intro-stage .shot { width: 82%; }
  .intro-phone { top: 18%; width: 30%; }

  /* 書類の流れは縦1列に積む */
  .flow-before { margin-top: 36px; }
  .before { flex-direction: column; align-items: stretch; }
  .before li,
  .before li:first-child { flex: none; flex-direction: column; align-items: stretch; }
  .paper { height: auto; min-height: 52px; padding: 10px; font-size: 17px; }
  .copy {
    width: auto;
    margin: 0 0 0 50%;
    padding: 6px 0 6px 14px;
    border-top: 0;
    border-left: 1px dashed var(--ink-sub);
    text-align: left;
  }

  .flow-app { margin-top: 56px; }
  .route { grid-template-columns: minmax(0, 1fr); }
  .route li,
  .route li:nth-child(3n+1) {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    column-gap: 12px;
    align-items: baseline;
    padding: 14px 16px 16px;
    border-left: 0;
    border-top: 1px solid var(--ink);
  }
  .route li:first-child { border-top: 0; }
  .route li + li::before,
  .route li:nth-child(3n+1)::before { display: block; left: 28px; top: -8px; transform: rotate(135deg); }
  .route .no { margin-top: 0; font-size: 20px; }
  .route .what { grid-column: 1 / -1; margin-top: 4px; }
  .stamp { right: 8px; top: -62px; width: 80px; height: 80px; font-size: 15px; border-width: 3px; }
  .flow-close { margin-top: 36px; }

  /* 計算表は「項目・数値」の行の下に補足を置く（役割は HTML の role で保つ） */
  .slip { padding: 6px 16px; }
  .slip table, .slip tbody { display: block; }
  .slip tr {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    column-gap: 12px;
    align-items: baseline;
    padding: 10px 0;
  }
  .slip .total { border-top: 1px solid var(--ink); }
  .slip .total th, .slip .total td { border-top: 0; }
  .slip th, .slip td { padding: 0; }
  .slip th { font-size: 16px; }
  .slip .num { padding-right: 0; font-size: 24px; }
  .slip .is-answer .num { font-size: 28px; }
  .slip .why { grid-column: 1 / -1; font-size: 14px; text-align: right; }
  .slip .why:empty { display: none; }
  .side-note { margin-top: 24px; font-size: 16px; }

  .ranks-block, .kinds-block { margin-top: 36px; }
  .ranks > div { gap: 8px; padding: 8px 12px; }
  .ranks dt { font-size: 18px; }
  .ranks dd { font-size: 20px; }
  .kinds { grid-template-columns: repeat(2, minmax(0, 1fr)); }


  .steps { grid-template-columns: minmax(0, 1fr); gap: 40px; margin-top: 36px; }
  .steps li + li::before,
  .steps li:nth-child(3)::before {
    display: block;
    content: "↓";
    content: "↓" / "";
    left: 24px; top: -34px;
    transform: none;
    font-size: 22px;
  }
  .steps .who { font-size: 21px; }
  .approval { margin-top: 32px; }

  .quality .row-label + * { margin-bottom: 36px; }
  .ledger--scale { font-size: 17px; }
  .ledger--scale > div { line-height: 38px; }
  .stack > div { grid-template-columns: 64px minmax(0, 1fr); }
  .stack dd { font-size: 16px; }
  .phones figcaption { margin-top: 16px; font-size: 16px; }

  .closing { padding-top: 80px; padding-bottom: 80px; }
  .closing-card { gap: 24px; padding: 28px 22px; }
  .closing-card p { font-size: 17px; }
  .closing-card .closing-next { margin-top: 18px; padding-top: 18px; }
}

@media (max-width: 375px) {
  h1 { font-size: 36px; }
  .intro .ledger { font-size: 16px; }
}