/* Aricata - businessdevelopment page specific CSS */
:root {
  /* メインカラー */
  --main: #1478C8;
  --main-deep: #0d5fa0;
  --main-light: #4a96d4;
  --main-pale: #e3f0fa;
  --main-bg: #eaf3fb;
  --main-bg-deep: #d6e7f5;

  /* 紙白系 */
  --paper: #ffffff;
  --paper-warm: #f8fafc;
  --paper-soft: #f1f5f9;
  --paper-cream: #fbfaf6;

  /* テキスト色 */
  --ink: #0a2a4a;
  --ink-mid: #1a1a1a;
  --ink-soft: #2a2a2a;
  --ink-muted: #4a4a4a;
  --ink-strong: #2a2a2a; /* 説明文・本文中のstrong強調色（見出し見出し系の--inkとは別管理） */
  --ink-black: #1a1a1a; /* 結論文の黒太強調（--ink-strongより一段濃い・指定文言のみ・v15/DR-40） */

  /* 罫線 */
  --line: #cbd5e1;
  --line-soft: #e2e8f0;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Noto Sans JP', sans-serif;
  background: var(--paper);
  color: var(--ink-mid);
  line-height: 1.85;
  overflow-x: hidden;
  font-size: 16px;
}

/* ============= BREADCRUMB ============= */
.breadcrumb {
  padding: 110px 40px 24px;
  max-width: 1320px;
  margin: 0 auto;
  font-size: 12px;
  color: var(--ink-muted);
  letter-spacing: 0.08em;
}

.breadcrumb a { color: var(--ink-muted); text-decoration: none; }

.breadcrumb a:hover { color: var(--main); }

.breadcrumb .sep { margin: 0 12px; color: var(--line); }

.breadcrumb .current { color: var(--main); font-weight: 600; }

/* ============= HERO ============= */
.hero {
  padding: 140px 40px 120px;
  background: linear-gradient(180deg, var(--main-pale) 0%, var(--paper) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background-image:
    linear-gradient(rgba(20, 120, 200, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(20, 120, 200, 0.04) 1px, transparent 1px);
  background-size: 80px 80px;
  pointer-events: none;
}

.hero-inner {
  max-width: 1320px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.hero-tag {
  display: inline-block;
  padding: 2px 0 2px 12px;
  background: none;            /* 案A: 塗りなし＝ボタンに見えない */
  border-left: 3px solid var(--main); /* 左アクセントバー */
  border-radius: 0;            /* 片側ボーダーは角丸なし */
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);          /* 濃紺テキスト #0a2a4a */
  letter-spacing: 0.04em;
  margin-bottom: 18px;        /* タグ→見出しの間隔を詰める（32→18） */
}

.hero-headline {
  font-family: 'Noto Serif JP', serif;
  font-size: clamp(36px, 5.5vw, 72px);
  font-weight: 700;
  line-height: 1.45;
  color: var(--ink);
  letter-spacing: -0.01em;
  margin-bottom: 56px;
}

.hero-headline .em {
  color: var(--main);
  text-decoration: underline;
  text-decoration-color: var(--main);
  text-decoration-thickness: 4px;
  text-underline-offset: 8px;
  text-decoration-skip-ink: none;
}

.hero-headline .small-block {
  display: block;
  font-size: 0.42em;
  font-weight: 500;
  line-height: 1.8;
  color: var(--ink-soft);
  margin-top: 32px;
  border-bottom: none;
  padding-bottom: 0;
}

.hero-meta {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  padding-top: 40px;
  border-top: 1px solid var(--line-soft);
}

.hero-meta-item {
  display: flex;
  flex-direction: column;
  padding: 0 32px;
  border-right: 1px solid var(--line);
}

.hero-meta-item:first-child { padding-left: 0; }

.hero-meta-item:last-child { border-right: none; }

.hero-meta-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--main);
  letter-spacing: 0.15em;
  margin-bottom: 12px;
  text-transform: uppercase;
  font-weight: 700;
}

.hero-meta-value {
  font-family: 'Inter', sans-serif;
  font-size: 56px;
  font-weight: 800;
  color: var(--ink);
  line-height: 1;
  margin-bottom: 8px;
  letter-spacing: -0.04em;
}

.hero-meta-value .small {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 20px;
  font-weight: 700;
  color: var(--main);
  margin-left: 4px;
  letter-spacing: 0;
}

.hero-meta-desc {
  font-size: 13px;
  color: var(--ink-soft);
  font-weight: 600;
}

/* ============= STRENGTH CORE (3つの強み情報ブロック) ============= */
.score { background: var(--paper-warm); }

.score-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 56px;
}

.score-card {
  padding: 36px 28px;
  background: var(--paper);
  border: 1px solid var(--line-soft);
  border-top: 4px solid var(--main);
  position: relative;
  transition: all 0.4s;
}

.score-card:hover {
  box-shadow: 0 20px 60px rgba(20, 120, 200, 0.08);
  transform: translateY(-4px);
}

.score-card-no {
  font-family: 'Playfair Display', serif;
  font-style: italic;
  font-size: 40px;
  font-weight: 700;
  color: var(--main-light);
  line-height: 1;
  margin-bottom: 16px;
}

.score-card-en {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 600;
  color: var(--main);
  letter-spacing: 0.15em;
  margin-bottom: 8px;
  text-transform: uppercase;
}

.score-card-title {
  font-family: 'Noto Serif JP', serif;
  font-size: 23px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 18px;
  line-height: 1.45;
}

.score-card-desc {
  font-size: 14px;
  line-height: 1.95;
  color: var(--ink-soft);
  margin-bottom: 18px;
}

.score-card-desc strong { color: var(--ink-strong); font-weight: 700; }

.score-card-proof {
  font-size: 13px;
  line-height: 1.9;
  color: var(--main-deep);
  font-weight: 500;
  padding-top: 14px;
  border-top: 1px dashed var(--main-light);
}

.score-card-proof strong { color: var(--main-deep); font-weight: 700; }

/* ============= STRENGTHS (4本柱 — 強み主・AI従) ============= */
.points {
  background: var(--paper);
  border-top: 1px solid var(--line-soft);
}

/* --- 4本柱 構造図 (B案) --- */
.pillars-map {
  margin: 56px 0 32px;
  padding: 44px 48px;
  background: var(--paper-warm);
  border: 1px solid var(--line-soft);
  border-radius: 16px;
}

.pm-cap {
  text-align: center;
  margin-bottom: 32px;
  padding-bottom: 30px;
  border-bottom: 1px solid var(--line-soft);
}

.pm-cap-en {
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: #1478c8;
  margin-bottom: 10px;
}

.pm-cap-title {
  font-family: 'Noto Serif JP', serif;
  font-size: 26px;
  font-weight: 700;
  color: var(--ink-strong);
  display: inline-block;
  position: relative;
  padding-bottom: 14px;
  margin-bottom: 18px;
}

.pm-cap-title::after {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 0;
  transform: translateX(-50%);
  width: 50px;
  height: 3px;
  border-radius: 2px;
  background: var(--main);
}

.pm-cap-desc {
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 18px;
  line-height: 1.9;
  color: var(--ink-soft);
  max-width: 980px;
  margin: 0 auto;
  text-wrap: balance;
}

.pm-blocks { display: flex; flex-direction: column; gap: 20px; }

.pm-bk {
  background: var(--paper);
  border: 1px solid var(--line-soft);
  border-radius: 14px;
  padding: 24px 30px;
}

.pm-bk-head {
  display: flex;
  align-items: baseline;
  gap: 6px;
  padding-bottom: 14px;
  margin-bottom: 4px;
  border-bottom: 2px solid var(--main-pale);
}

.pm-bk-n {
  font-family: 'Inter', sans-serif;
  font-size: 22px;
  font-weight: 800;
  color: #1478c8;
  line-height: 1;
}

.pm-bk-ttl {
  font-family: 'Noto Serif JP', serif;
  font-size: 22px;
  font-weight: 700;
  color: #1478c8;
}

.pm-rows { display: flex; flex-direction: column; }

.pm-row {
  display: grid;
  grid-template-columns: 50px 250px 1fr;
  gap: 0 22px;
  align-items: center;
  padding: 15px 0;
}

.pm-row + .pm-row { border-top: 1px solid var(--line-soft); }

.pm-row-num {
  font-family: 'Inter', sans-serif;
  font-size: 24px;
  font-weight: 800;
  color: var(--main-light);
  line-height: 1;
  text-align: center;
  letter-spacing: -0.02em;
}

.pm-row-mark {
  justify-self: center;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--main);
}

.pm-row-2 .pm-row-mark { background: var(--main-deep); }

.pm-row-3 .pm-row-mark { background: #0a4a82; }

.pm-row-en {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  font-weight: 700;
  color: #1478c8;
  letter-spacing: 0.03em;
  margin-bottom: 3px;
}

.pm-row-title {
  font-family: 'Noto Serif JP', serif;
  font-size: 21px;
  font-weight: 700;
  color: var(--ink-strong);
  line-height: 1.4;
}

.pm-row-sub {
  font-size: 18px;
  line-height: 1.7;
  color: var(--ink-strong);
  font-weight: 600;
}

/* --- 4本柱テキスト 定義リスト型(縦並び) --- */
.point-item.refined .point-body { padding-right: 0; }

.point-blocks-2col {
  display: block;
}

.points-list {
  margin-top: 64px;
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--line);
}

.point-item {
  padding: 48px 0;
  border-bottom: 1px solid var(--line);
}

.point-no {
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  font-weight: 700;
  color: var(--main);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 8px;
  display: block;
}

.point-body {
  padding-right: 0;
}

.point-title {
  font-family: 'Noto Serif JP', serif;
  font-size: clamp(24px, 2.6vw, 30px);
  font-weight: 700;
  color: var(--ink);
  line-height: 1.5;
  margin-bottom: 28px;
  letter-spacing: -0.005em;
}

.point-title .em { color: var(--main); }

/* ===== v04 定義リスト型: 左ラベル × 右本文(枠を減らす) ===== */
.point-block {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 32px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line-soft);
  position: relative;
}

.point-block:first-of-type { border-top: 1px solid var(--line); }

.point-block:last-child { border-bottom: none; padding-bottom: 0; }

.point-block-label {
  align-self: center;
  justify-self: start;
  display: inline-block;
  font-family: 'Noto Sans JP', sans-serif;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #fff;
  background: var(--main);
  padding: 10px 20px;
  border-radius: 7px;
}

.point-block-text {
  margin: 0;
  font-size: 16px;
  line-height: 1.95;
  color: var(--ink-soft);
}

/* v15: 結論文の黒太強調（指定文言のみ。--ink-strongより一段濃い・DR-40） */
.kt-black {
  color: var(--ink-black);
  font-weight: 700;
}

.point-block-text strong {
  color: var(--ink-strong);
  font-weight: 700;
}

/* ===== 主従反転(定義リスト型): 強み主・AI従 ===== */
/* ①強み(主) — 青タブ＋本文やや大きく */
.point-block.pillar .point-block-label {
  color: #fff;
  background: var(--main);
}

.point-block.pillar .point-block-text {
  font-size: 16px;
  color: var(--ink-soft);
}

.point-block.pillar .point-block-text strong {
  color: var(--ink-strong);
  font-weight: 700;
}

/* ②実績(主の裏付け) — 青タブ */
.point-block.proof .point-block-label {
  color: #fff;
  background: var(--main);
}

.point-block.proof .point-block-text strong {
  color: var(--ink-strong);
  font-weight: 700;
}

/* ③AI協働(従) — 淡色タブ（従属を色で表現）、本文をmuted寄りに */
.point-block.ai-amp .point-block-label {
  color: var(--main-deep);
  background: var(--main-pale);
}

.point-block.ai-amp .point-block-text {
  color: var(--ink-muted);
}

.point-block.ai-amp .point-block-text strong {
  color: var(--ink-strong);
  font-weight: 700;
}

.point-block.ai-amp.now .point-block-label::after {
  content: ' / 現在実践中';
  color: var(--main);
  font-weight: 700;
  font-size: 11px;
}

/* ============= LAYERS (レイヤー1-3) ============= */
.layers { background: var(--paper-warm); }

.layers-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 56px;
}

.layer-card {
  padding: 48px 36px;
  background: var(--paper);
  border: 1px solid var(--line-soft);
  border-top: 4px solid var(--line);
  transition: all 0.4s;
  position: relative;
}

.layer-card:hover {
  border-top-color: var(--main);
  box-shadow: 0 20px 60px rgba(20, 120, 200, 0.08);
  transform: translateY(-4px);
}

.layer-card.support {
  border-top-color: var(--main);
  background: linear-gradient(180deg, var(--main-pale) 0%, var(--paper) 30%);
}

.layer-card.core {
  border-top-color: var(--main);
  background: linear-gradient(180deg, var(--main-pale) 0%, var(--paper) 30%);
}

.layer-label {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px;
}

.layer-label-tab {
  display: inline-block;
  background: var(--main);
  color: var(--paper);
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  font-weight: 700;
  padding: 5px 14px;
  border-radius: 6px;
  letter-spacing: 0.08em;
}

.layer-range {
  font-family: 'JetBrains Mono', monospace;
  font-size: 20px;
  font-weight: 700;
  color: var(--main);
  letter-spacing: 0.05em;
}

.layer-title {
  font-family: 'Noto Serif JP', serif;
  font-size: 26px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 8px;
}

.layer-en {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  font-weight: 600;
  color: var(--main);
  letter-spacing: 0.08em;
  margin-bottom: 24px;
}

.layer-desc {
  font-size: 16px;
  line-height: 1.9;
  color: var(--ink-soft);
}

/* ============= PROCESS ============= */
.process { background: var(--paper); }

.process-intro {
  margin: 56px 0 80px;
}

.process-intro-lead {
  font-size: 19px;
  line-height: 2;
  color: var(--ink-soft);
  margin-bottom: 0;
}

.process-intro-lead strong {
  color: var(--ink-strong);
  font-weight: 700;
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  position: relative;
}

.process-step {
  padding: 32px 24px;
  background: var(--paper);
  border: 1px solid var(--line-soft);
  border-right: none;
  position: relative;
  transition: all 0.3s;
}

.process-step:last-child { border-right: 1px solid var(--line-soft); }

.process-step:hover {
  background: var(--main-pale);
  z-index: 2;
}

.process-step:nth-child(3n) { border-right: 1px solid var(--line-soft); }

.process-step:nth-child(n+4) { border-top: none; }

.process-step-no {
  font-family: 'Inter', sans-serif;
  font-size: 14px;
  font-weight: 700;
  color: var(--main);
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}

.process-step-title {
  font-family: 'Noto Serif JP', serif;
  font-size: 19px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 14px;
  line-height: 1.5;
}

.process-step-body {
  font-size: 16px;
  line-height: 1.9;
  color: var(--ink-soft);
  margin-bottom: 16px;
  min-height: calc(16px * 1.9 * 4);
}

.process-step-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  color: var(--main);
  border-top: 1px dashed var(--line);
  padding-top: 12px;
  letter-spacing: 0.05em;
  display: block;
  line-height: 1.7;
}

.process-step-tag .ai { color: var(--ink-muted); display: inline-block; width: 2.8em; }

.process-step-tag .human { color: var(--ink-black); font-weight: 700; display: inline-block; width: 2.8em; }

/* ============= ISSUES ============= */
.issues { background: var(--paper-warm); }

.issues-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 56px;
}

.issue-card {
  padding: 40px 36px;
  background: var(--paper);
  border: 1px solid var(--line-soft);
  position: relative;
  transition: all 0.3s;
}

.issue-card:hover {
  border-color: var(--main);
  box-shadow: 0 12px 40px rgba(20, 120, 200, 0.06);
}

.issue-no {
  font-family: 'Inter', sans-serif;
  font-size: 11px;
  font-weight: 700;
  color: var(--main);
  letter-spacing: 0.2em;
  margin-bottom: 16px;
}

.issue-title {
  font-family: 'Noto Serif JP', serif;
  font-size: 26px;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.45;
  margin-bottom: 16px;
}

.issue-title .em { color: var(--main); }

.issue-body {
  font-size: 16px;
  line-height: 1.95;
  color: var(--ink-soft);
}

.issue-body strong { color: var(--ink-strong); font-weight: 700; }

/* ============= SCOPE & OUTPUTS ============= */
.scope { background: var(--paper); }

.scope-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin-top: 56px;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.scope-card {
  padding: 32px 28px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}

.scope-card-no {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--main);
  font-weight: 700;
  letter-spacing: 0.15em;
  margin-bottom: 12px;
}

.scope-card-title {
  font-family: 'Noto Serif JP', serif;
  font-size: 20px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 18px;
  line-height: 1.5;
}

.scope-output-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  color: var(--ink-muted);
  letter-spacing: 0.15em;
  margin-bottom: 8px;
  font-weight: 600;
}

.scope-output-list {
  font-size: 16px;
  line-height: 1.95;
  color: var(--ink-soft);
  list-style: none;
  padding-left: 0;
  margin-bottom: 16px;
}

.scope-output-list li {
  padding-left: 14px;
  position: relative;
}

.scope-output-list li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--main-light);
}

.scope-ai-note {
  font-family: 'JetBrains Mono', monospace;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-muted);
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  letter-spacing: 0.03em;
  display: block;
  font-style: normal;
  font-weight: 500;
}

.scope-ai-note .ai-note-label {
  font-weight: 700;
  color: var(--main);
}

/* ============= FLOW ============= */
.flow { background: var(--paper); }

.flow-timeline {
  margin-top: 56px;
  position: relative;
}

.flow-timeline::before {
  content: '';
  position: absolute;
  left: 22px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--main-light);
}

.flow-step {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 32px;
  padding: 24px 0;
  position: relative;
}

.flow-step-marker {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--paper);
  border: 3px solid var(--main);
  color: var(--main);
  font-family: 'Inter', sans-serif;
  font-size: 16px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 2;
}

.flow-step-content {
  padding: 0 0 24px 0;
  border-bottom: 1px solid var(--line-soft);
}

.flow-step:last-child .flow-step-content { border-bottom: none; }

.flow-step-period {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--main);
  letter-spacing: 0.15em;
  font-weight: 700;
  margin-bottom: 6px;
}

.flow-step-title {
  font-family: 'Noto Serif JP', serif;
  font-size: 22px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 14px;
  line-height: 1.5;
}

.flow-step-desc {
  font-size: 16px;
  line-height: 1.95;
  color: var(--ink-soft);
}

.flow-step-desc strong { color: var(--ink-strong); font-weight: 700; }

.flow-note {
  margin-top: 48px;
  padding: 32px 40px;
  background: var(--paper-soft);
  border-left: 4px solid var(--main);
  font-size: 14px;
  line-height: 1.9;
  color: var(--ink-soft);
}

.flow-note strong { color: var(--main-deep); font-weight: 700; }

/* ============= CASES ============= */
.cases { background: var(--paper-warm); }

.case-result .num {
  font-size: 22px;
  font-weight: 800;
  color: var(--main);
  letter-spacing: -0.01em;
}

.case-disclaimer {
  margin-top: 32px;
  font-size: 12px;
  color: var(--ink-muted);
  font-style: italic;
}

/* ============= CTA ============= */
.cta {
  background: var(--main-bg-deep);
  color: var(--ink);
  text-align: left;
  padding: 100px 40px;
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(20, 120, 200, 0.18) 0%, transparent 60%);
  pointer-events: none;
}

.cta-inner {
  max-width: 1320px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}

.cta-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--main);
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-weight: 700;
  margin-bottom: 32px;
}

.cta-eyebrow::before {
  content: '';
  width: 32px;
  height: 1px;
  background: var(--main);
}

.cta-empower-tag {
  font-family: 'Playfair Display', serif;
  font-size: 30px;
  color: var(--main);
  font-weight: 700;
  margin-bottom: 24px;
}

.cta-title {
  font-family: 'Noto Serif JP', serif;
  font-size: clamp(40px, 6vw, 80px);
  line-height: 1.15;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 32px;
  max-width: 1100px;
  letter-spacing: -0.03em;
}

.cta-title .accent { color: var(--main); }

.cta-sub {
  font-size: 19px;
  line-height: 2.0;
  color: var(--ink-mid);
  max-width: 780px;
  margin-bottom: 56px;
}

.cta-button {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  padding: 24px 52px;
  background: var(--main);
  color: var(--paper);
  text-decoration: none;
  font-weight: 700;
  font-size: 17px;
  border-radius: 100px;
  transition: all 0.3s;
  box-shadow: 0 8px 28px rgba(20, 120, 200, 0.35);
  font-family: 'Noto Sans JP', sans-serif;
}

.cta-button:hover {
  background: var(--main-deep);
  transform: translateY(-3px);
  box-shadow: 0 12px 40px rgba(20, 120, 200, 0.45);
}

.cta-note {
  margin-top: 32px;
  font-size: 13px;
  color: var(--ink-muted);
}

/* ============= SOLUTIONS (our_solutions / 6つの入り方) ============= */
.diff { background: var(--paper-soft); border-top: 1px solid var(--line-soft); }

.diff-intro {
  font-size: 19px;
  line-height: 2;
  color: var(--ink-soft);
  margin-bottom: 48px;
  max-width: 940px;
}

.diff-intro strong { color: var(--ink-strong); font-weight: 700; }

.diff-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.diff-card {
  background: var(--paper);
  padding: 36px 36px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  position: relative;
}

.diff-card-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 12px;
}

.diff-card-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--main);
  letter-spacing: 0.12em;
  font-weight: 700;
  flex-shrink: 0;
}

.diff-card-en {
  font-family: 'Inter', sans-serif;
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: #1478c8;
  font-weight: 600;
  font-style: normal;
}

.diff-card-title {
  font-family: 'Noto Serif JP', serif;
  font-size: 26px;
  font-weight: 700;
  color: var(--ink-black);
  line-height: 1.5;
  margin-bottom: 12px;
}

.diff-card-trigger {
  display: block;
  font-size: 16px;
  color: var(--main-deep);
  font-weight: 700;
  background: var(--main-pale);
  padding: 12px 14px;
  border-left: 3px solid var(--main);
  border-radius: 4px;
  margin-bottom: 16px;
  line-height: 1.7;
}

.diff-card-body {
  font-size: 16px;
  line-height: 1.95;
  color: var(--ink-soft);
}

.diff-card-body strong { color: var(--ink-strong); font-weight: 700; }

/* ============= RESPONSIVE ============= */
@media (max-width: 980px) {
  /* ===== スマホナビ: ハンバーガー + アコーディオン ===== */
  /* ヘッダー高さ圧縮＋ロゴ左寄せ・ハンバーガー右寄せ（左右padding 40→20px） */
  nav { padding: 10px 0; }
  .nav-inner { padding: 0 12px 0 20px; } /* 右paddingを縮めハンバーガーを右端へ */
  /* ヘッダーバーに常時表示するCTA（下のドロワー内CTAとは別物） */
  .nav-cta-header {
    display: inline-flex;
    align-items: center;
    margin-left: auto; /* logoとの間を押し広げ、ハンバーガーと共に右寄せ */
    text-decoration: none; /* 下線消し（nav-links外なので明示指定が必要） */
    padding: 6px 18px !important; /* ボタン高さを更に圧縮 */
    font-size: 13px !important;
  }
  .nav-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 36px; height: 36px; /* ヘッダー高さ圧縮 40→36 */
    margin-left: 12px;
    background: none; border: none;
    cursor: pointer; padding: 0;
    z-index: 210;
  }
  .nav-toggle span {
    display: block;
    width: 24px; height: 2px;
    background: var(--ink);
    border-radius: 2px;
    transition: transform 0.3s, opacity 0.3s;
  }
  .nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .nav-links {
    position: fixed;
    top: 0; right: 0;
    width: min(82vw, 360px);
    height: 100vh;
    background: var(--paper);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 96px 24px 40px;
    transform: translateX(100%);
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    overflow-y: auto;
    z-index: 205;
  }
  .nav-links.open { transform: translateX(0); box-shadow: -8px 0 40px rgba(10, 42, 74, 0.15); }
  .nav-links > li { width: 100%; border-bottom: 1px solid var(--line-soft); }
  .nav-links > li > a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 4px;
    font-size: 16px;
  }
  .nav-links a::after { display: none !important; }
  /* ドロワー内の大きいCTAはドロワー内のみに限定（ヘッダーCTAには適用しない） */
  .nav-links .nav-cta {
    justify-content: center;
    margin-top: 20px;
    padding: 16px 24px !important;
    font-size: 15px !important;
    box-shadow: none;
  }
  .nav-links > li:last-child { border-bottom: none; }

  /* アコーディオン: caret回転 + 子の開閉 */
  .nav-caret {
    border-top-color: var(--main);
    opacity: 0.7;
  }
  .has-dropdown.open .nav-caret { transform: rotate(180deg); }
  .dropdown {
    position: static;
    left: auto;
    top: auto;
    transform: none;
    min-width: 0;
    width: 100%;
    background: var(--paper-soft);
    border: none;
    border-radius: 8px;
    box-shadow: none;
    padding: 0;
    margin: 0 0 8px;
    max-height: 0;
    overflow: hidden;
    opacity: 1;
    visibility: visible;
    transition: max-height 0.35s ease;
  }
  .has-dropdown.open .dropdown { max-height: 480px; }
  .dropdown a { padding: 12px 16px; font-size: 15px; }
  .has-dropdown:hover .dropdown { opacity: 1; transform: none; }
  .has-dropdown::after { display: none; }
  .point-item { gap: 16px; }
  .point-no { font-size: 13px; padding-left: 0; }
  .point-body { padding-right: 0; }
  .point-block { grid-template-columns: 1fr; gap: 12px; }
  .layers-grid { grid-template-columns: 1fr; }
  .score-grid { grid-template-columns: repeat(2, 1fr); }
  .point-blocks-2col { display: block; }
  .pillars-map { padding: 30px 20px; }
  .pm-cap-title { font-size: 22px; }
  .pm-cap-desc { font-size: 16px; }
  .pm-row-sub { font-size: 16px; }
  .pm-bk { padding: 22px 20px; }
  .pm-row { grid-template-columns: 40px 1fr; gap: 2px 14px; align-items: start; }
  .pm-row-num, .pm-row-mark { grid-column: 1; grid-row: 1 / 3; align-self: start; }
  .pm-row-num { font-size: 28px; }
  .pm-row-mark { margin-top: 6px; }
  .pm-row-lead { grid-column: 2; grid-row: 1; }
  .pm-row-sub { grid-column: 2; grid-row: 2; margin-top: 4px; }
  .process-steps { grid-template-columns: 1fr; }
  .process-step-body { min-height: auto; }
  .process-step { border: 1px solid var(--line-soft); border-top: none; }
  .process-step:first-child { border-top: 1px solid var(--line-soft); }
  .diff-grid { grid-template-columns: 1fr; }
  .issues-grid { grid-template-columns: 1fr; }
  .scope-grid { grid-template-columns: 1fr; }
  .cases-grid { grid-template-columns: 1fr; }
  section { padding: 80px 24px; }
  .hero { padding: 130px 24px 80px; }
  .hero-headline .small-block { font-size: 18px; } /* モバイルでサブ文言を拡大（約15→18px） */
  .hero-meta { grid-template-columns: repeat(2, 1fr); gap: 0; }
  .hero-meta-item { padding: 16px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
  .hero-meta-item:nth-child(2) { border-right: none; }
  .hero-meta-item:nth-child(3), .hero-meta-item:nth-child(4) { border-bottom: none; }
  .hero-meta-item:first-child { padding-left: 16px; }
  .hero-meta-value { font-size: 44px; }
}