/* ============================================
   エージェンティックエンジニアリング セミナーサイト
   パーソルクロステクノロジー様 CA企画 / 2026-05-21
   ============================================ */

:root {
  --red: #c4302b;
  --red-deep: #8b1c1c;
  --red-tint: #fdecea;
  --red-mid: #d65651;

  --ink: #1a1a1a;
  --ink-soft: #2d2d2d;
  --gray-900: #1a1a1a;
  --gray-700: #404040;
  --gray-500: #737373;
  --gray-400: #a3a3a3;
  --gray-300: #d4d4d4;
  --gray-200: #e5e5e5;
  --gray-100: #f5f5f5;
  --gray-50:  #fafafa;

  --bg: #ffffff;
  --bg-alt: #fafafa;
  --bg-warm: #faf6f5;

  --max-w: 1100px;

  --shadow-sm: 0 1px 2px rgba(0,0,0,.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,.06);
  --shadow-lg: 0 12px 40px rgba(0,0,0,.10);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: "Helvetica Neue", "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic", Meiryo, Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  font-feature-settings: "palt";
  word-break: auto-phrase;
  line-break: strict;
  overflow-wrap: break-word;
  text-wrap: pretty;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* 日本語本文の自然な改行制御 */
p, li, dt, dd,
.pane-lead, .sec-lead, .hero-sub,
.note p, .tip p, .warn p,
.card p, .case p, .step-body p,
.quote-text, .quote-src,
.shot-cap, .flow-cap,
.kpi .lbl, .kpi .src,
.adk-desc, .case-body p, .check-text {
  word-break: auto-phrase;
  line-break: strict;
  overflow-wrap: break-word;
  text-wrap: pretty;
}

a { color: var(--red); text-decoration: none; }
a:hover { color: var(--red-deep); text-decoration: underline; }
img { max-width: 100%; height: auto; display: block; }

code {
  font-family: "SF Mono", Menlo, Consolas, monospace;
  background: var(--gray-100);
  border: 1px solid var(--gray-200);
  border-radius: 4px;
  padding: 1px 6px;
  font-size: 0.86em;
  color: var(--ink);
}

pre {
  font-family: "SF Mono", Menlo, Consolas, monospace;
  background: var(--ink);
  color: #f5f5f5;
  border-radius: 8px;
  padding: 16px 20px;
  overflow-x: auto;
  font-size: 0.82em;
  line-height: 1.6;
  margin: 12px 0;
}

pre code {
  background: transparent;
  border: none;
  padding: 0;
  color: inherit;
}

/* ============================================
   ヘッダー（固定タブナビ）
   ============================================ */

.site-header {
  position: sticky; top: 0; z-index: 100;
  background: var(--bg);
  border-bottom: 1px solid var(--gray-200);
  box-shadow: 0 1px 0 rgba(0,0,0,.02);
}

.header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 14px 24px 0;
  display: flex; flex-direction: column; gap: 10px;
}

.brand {
  display: flex; align-items: center; gap: 14px;
}

.brand-logo { height: 22px; width: auto; }

.brand-meta {
  display: flex; align-items: baseline; gap: 12px;
  flex: 1;
  font-size: 0.74rem;
  color: var(--gray-500);
}

.brand-meta strong {
  color: var(--ink);
  font-weight: 700;
  font-size: 0.82rem;
  letter-spacing: 0.01em;
}

.brand-pill {
  background: var(--red-tint);
  color: var(--red-deep);
  padding: 2px 10px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 0.7rem;
  letter-spacing: 0.04em;
}

.tab-nav {
  display: flex;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--gray-300) transparent;
  -webkit-overflow-scrolling: touch;
}

.tab-nav::-webkit-scrollbar { height: 4px; }
.tab-nav::-webkit-scrollbar-thumb { background: var(--gray-300); border-radius: 2px; }

.tab-btn {
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  font-family: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--gray-500);
  padding: 12px 18px 14px;
  cursor: pointer;
  white-space: nowrap;
  transition: color 0.18s, border-color 0.18s, background 0.18s;
  position: relative;
}

.tab-btn .tab-no {
  display: inline-block;
  font-size: 0.66rem;
  color: var(--gray-400);
  margin-right: 6px;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.tab-btn:hover {
  color: var(--ink);
  background: var(--gray-50);
}

.tab-btn.active {
  color: var(--red-deep);
  border-bottom-color: var(--red);
}

.tab-btn.active .tab-no {
  color: var(--red);
}

/* ============================================
   タブパネル（共通）
   ============================================ */

.tab-pane {
  display: none;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 56px 24px 80px;
  animation: fadeIn 0.25s ease-out;
}

.tab-pane.active { display: block; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

.pane-head {
  border-bottom: 1px solid var(--gray-200);
  padding-bottom: 24px;
  margin-bottom: 36px;
}

.pane-eyebrow {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--red);
  text-transform: uppercase;
  margin-bottom: 10px;
}

.pane-title {
  font-size: 2.0rem;
  font-weight: 800;
  letter-spacing: 0.005em;
  line-height: 1.3;
  color: var(--ink);
}

.pane-lead {
  margin-top: 16px;
  font-size: 0.95rem;
  color: var(--gray-700);
  line-height: 1.85;
}

/* セクション内見出し */

.sec {
  margin: 48px 0 32px;
}

.sec-num {
  display: inline-block;
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--red);
  margin-bottom: 8px;
}

.sec-title {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: 0.005em;
  color: var(--ink);
  margin-bottom: 14px;
  border-bottom: 2px solid var(--ink);
  padding-bottom: 8px;
  display: inline-block;
}

.sec-lead {
  font-size: 0.92rem;
  color: var(--gray-700);
  line-height: 1.85;
  margin-bottom: 20px;
}

.sub-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 28px 0 12px;
  color: var(--ink);
}

/* ============================================
   Hero (OVERVIEW)
   ============================================ */

.hero {
  background: linear-gradient(135deg, #ffffff 0%, var(--bg-warm) 100%);
  border: 1px solid var(--gray-200);
  border-radius: 16px;
  padding: 48px 48px 44px;
  margin-bottom: 48px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -120px; right: -80px;
  width: 380px; height: 380px;
  background: radial-gradient(circle, var(--red-tint) 0%, transparent 70%);
  pointer-events: none;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--red);
  text-transform: uppercase;
  background: var(--bg);
  border: 1px solid var(--red-tint);
  padding: 4px 14px;
  border-radius: 12px;
  margin-bottom: 18px;
  position: relative;
}

.hero h1 {
  font-size: 2.6rem;
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: 0.005em;
  color: var(--ink);
  position: relative;
  margin-bottom: 8px;
}

.hero .hero-sub {
  font-size: 1.0rem;
  color: var(--gray-700);
  margin-bottom: 28px;
  position: relative;
  font-weight: 500;
}

.hero-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  position: relative;
  margin-bottom: 24px;
}

.hero-meta dt {
  font-size: 0.7rem;
  color: var(--gray-500);
  font-weight: 700;
  letter-spacing: 0.06em;
  margin-bottom: 4px;
}

.hero-meta dd {
  font-size: 0.92rem;
  color: var(--ink);
  font-weight: 600;
}

.hero-cta {
  display: flex; gap: 12px; flex-wrap: wrap;
  position: relative;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 8px;
  font-size: 0.86rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-decoration: none;
  border: 1.5px solid transparent;
  transition: all 0.16s;
  cursor: pointer;
  font-family: inherit;
}

.btn-primary {
  background: var(--red);
  color: #fff;
  border-color: var(--red);
}

.btn-primary:hover {
  background: var(--red-deep);
  border-color: var(--red-deep);
  color: #fff;
  text-decoration: none;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-ghost {
  background: var(--bg);
  color: var(--ink);
  border-color: var(--gray-300);
}

.btn-ghost:hover {
  border-color: var(--ink);
  color: var(--ink);
  text-decoration: none;
}

.btn-small {
  padding: 8px 14px;
  font-size: 0.78rem;
}

/* ============================================
   KPI / 数字カード
   ============================================ */

.kpi-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin: 24px 0;
}

.kpi {
  background: var(--bg);
  border: 1px solid var(--gray-200);
  border-left: 4px solid var(--red);
  border-radius: 8px;
  padding: 22px 22px 20px;
  transition: all 0.16s;
}

.kpi:hover {
  border-color: var(--gray-300);
  border-left-color: var(--red);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.kpi .num {
  font-size: 1.9rem;
  font-weight: 900;
  color: var(--red-deep);
  line-height: 1.1;
  letter-spacing: -0.01em;
  margin-bottom: 6px;
  font-feature-settings: "tnum";
}

.kpi .lbl {
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.5;
  margin-bottom: 6px;
}

.kpi .src {
  font-size: 0.7rem;
  color: var(--gray-500);
  line-height: 1.5;
}

/* ============================================
   カードグリッド（共通）
   ============================================ */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 18px;
  margin: 20px 0;
}

.card-grid.cols-2 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.card-grid.cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.card-grid.cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

@media (max-width: 720px) {
  .card-grid.cols-3, .card-grid.cols-4 { grid-template-columns: 1fr 1fr; }
}

.card {
  background: var(--bg);
  border: 1px solid var(--gray-200);
  border-radius: 8px;
  padding: 20px 22px 18px;
  transition: all 0.16s;
  position: relative;
}

.card:hover {
  border-color: var(--gray-300);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.card .tag {
  display: inline-block;
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--red);
  background: var(--red-tint);
  padding: 2px 8px;
  border-radius: 10px;
  margin-bottom: 10px;
  text-transform: uppercase;
}

.card h3 {
  font-size: 1.0rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--ink);
}

.card p {
  font-size: 0.84rem;
  color: var(--gray-700);
  line-height: 1.7;
}

.card .src {
  font-size: 0.7rem;
  color: var(--gray-500);
  margin-top: 10px;
  padding-top: 8px;
  border-top: 1px dashed var(--gray-200);
}

.card .src a { color: var(--gray-700); }

/* 強調カード */

.card.accent {
  background: var(--ink);
  color: #f5f5f5;
  border-color: var(--ink);
}

.card.accent h3 { color: #fff; }
.card.accent p { color: #d4d4d4; }
.card.accent .tag { background: rgba(255,255,255,.1); color: #fca5a5; }
.card.accent .src { color: #a3a3a3; border-top-color: rgba(255,255,255,.1); }

/* ============================================
   引用カード（Boris等）
   ============================================ */

.quote {
  background: var(--bg);
  border: 1px solid var(--gray-200);
  border-left: 4px solid var(--red);
  border-radius: 8px;
  padding: 24px 28px 22px;
  margin: 16px 0;
}

.quote-author {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--red-deep);
  margin-bottom: 10px;
  display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap;
}

.quote-author .handle {
  color: var(--gray-500);
  font-weight: 500;
  font-size: 0.74rem;
}

.quote-text {
  font-size: 0.95rem;
  font-style: italic;
  color: var(--ink);
  line-height: 1.85;
  margin-bottom: 12px;
}

.quote-src {
  font-size: 0.74rem;
  color: var(--gray-500);
  line-height: 1.6;
  padding-top: 10px;
  border-top: 1px dashed var(--gray-200);
}

/* ============================================
   コールアウト
   ============================================ */

.note {
  background: var(--bg-warm);
  border-left: 3px solid var(--red);
  border-radius: 0 6px 6px 0;
  padding: 14px 18px;
  margin: 14px 0;
}

.note-label {
  display: block;
  font-size: 0.74rem;
  font-weight: 700;
  color: var(--red-deep);
  margin-bottom: 4px;
  letter-spacing: 0.02em;
}

.note p {
  font-size: 0.86rem;
  color: var(--gray-700);
  line-height: 1.75;
}

.tip {
  background: var(--gray-100);
  border-left: 3px solid var(--gray-700);
  border-radius: 0 6px 6px 0;
  padding: 14px 18px;
  margin: 14px 0;
}

.tip-label {
  display: block;
  font-size: 0.74rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 4px;
}

.tip p {
  font-size: 0.86rem;
  color: var(--gray-700);
  line-height: 1.75;
}

.warn {
  background: #fff8eb;
  border-left: 3px solid #b45309;
  border-radius: 0 6px 6px 0;
  padding: 14px 18px;
  margin: 14px 0;
}

.warn-label {
  display: block;
  font-size: 0.74rem;
  font-weight: 700;
  color: #b45309;
  margin-bottom: 4px;
}

.warn p {
  font-size: 0.86rem;
  color: #6b3a06;
  line-height: 1.75;
}

/* ============================================
   テーブル
   ============================================ */

.tbl-wrap {
  overflow-x: auto;
  margin: 14px 0;
  border-radius: 8px;
  border: 1px solid var(--gray-200);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.84rem;
  background: var(--bg);
}

table thead th {
  background: var(--ink);
  color: #fff;
  text-align: left;
  font-weight: 600;
  padding: 10px 14px;
  letter-spacing: 0.02em;
  font-size: 0.78rem;
}

table tbody td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--gray-200);
  vertical-align: top;
  color: var(--gray-700);
}

table tbody tr:last-child td { border-bottom: none; }

table tbody tr:hover td { background: var(--gray-50); }

table tbody td strong { color: var(--ink); }

/* ============================================
   タイムライン
   ============================================ */

.timeline {
  border-left: 2px solid var(--gray-200);
  padding-left: 24px;
  margin: 16px 0 16px 8px;
  position: relative;
}

.tl-item {
  margin-bottom: 24px;
  position: relative;
}

.tl-item::before {
  content: "";
  position: absolute;
  left: -32px; top: 6px;
  width: 12px; height: 12px;
  background: var(--red);
  border: 2px solid #fff;
  border-radius: 50%;
  box-shadow: 0 0 0 2px var(--gray-200);
}

.tl-date {
  font-size: 0.74rem;
  font-weight: 700;
  color: var(--red-deep);
  letter-spacing: 0.02em;
  margin-bottom: 4px;
}

.tl-title {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 4px;
}

.tl-body {
  font-size: 0.82rem;
  color: var(--gray-700);
  line-height: 1.75;
}

.tl-src {
  font-size: 0.7rem;
  color: var(--gray-500);
  margin-top: 4px;
}

/* ============================================
   スクリーンショット表示
   ============================================ */

.shot {
  margin: 18px 0 22px;
}

.shot img {
  border: 1px solid var(--gray-200);
  border-radius: 8px;
  box-shadow: var(--shadow-md);
  width: 100%;
  max-height: 460px;
  object-fit: cover;
  object-position: top;
}

.shot-cap {
  font-size: 0.74rem;
  color: var(--gray-500);
  margin-top: 8px;
  text-align: center;
  line-height: 1.6;
}

.shot-cap a { color: var(--gray-700); }

/* ============================================
   フロー / ステップ
   ============================================ */

.steps {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 16px 0;
}

.step {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  background: var(--bg);
  border: 1px solid var(--gray-200);
  border-radius: 8px;
  padding: 18px 22px;
  position: relative;
  transition: all 0.16s;
}

.step:hover {
  border-color: var(--gray-300);
  box-shadow: var(--shadow-sm);
}

.step-no {
  flex-shrink: 0;
  width: 36px; height: 36px;
  background: var(--ink);
  color: #fff;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800;
  font-size: 0.86rem;
  letter-spacing: 0;
}

.step-body { flex: 1; }
.step-body strong {
  display: block;
  font-size: 0.95rem;
  margin-bottom: 4px;
  color: var(--ink);
}

.step-body p {
  font-size: 0.84rem;
  color: var(--gray-700);
  line-height: 1.75;
}

/* ============================================
   水平フロー
   ============================================ */

.h-flow {
  display: flex;
  align-items: center;
  gap: 0;
  flex-wrap: wrap;
  justify-content: center;
  margin: 16px 0;
}

.h-flow .box {
  background: var(--bg);
  border: 1.5px solid var(--gray-300);
  border-radius: 8px;
  padding: 12px 18px;
  font-size: 0.82rem;
  font-weight: 600;
  text-align: center;
  min-width: 110px;
  line-height: 1.4;
  color: var(--ink);
  transition: all 0.18s;
}

.h-flow .box:hover { border-color: var(--red); }

.h-flow .box.accent {
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
}

.h-flow .box.highlight {
  background: var(--red-tint);
  color: var(--red-deep);
  border-color: var(--red);
}

.h-flow .arr {
  font-size: 1.2rem;
  color: var(--gray-400);
  padding: 0 10px;
  flex-shrink: 0;
}

/* ============================================
   レイヤー図
   ============================================ */

.layers { margin: 16px 0; }

.layer {
  padding: 12px 18px;
  font-size: 0.86rem;
  font-weight: 600;
  text-align: center;
  border-radius: 4px;
  margin-bottom: 4px;
  letter-spacing: 0.01em;
}

.layer.l1 { background: var(--ink); color: #fff; }
.layer.l2 { background: var(--gray-700); color: #fff; }
.layer.l3 { background: var(--gray-300); color: var(--ink); }
.layer.l4 { background: var(--red); color: #fff; }
.layer.l-light { background: var(--red-tint); color: var(--red-deep); }

/* ============================================
   チェックリスト
   ============================================ */

.checks {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 12px;
  margin: 16px 0;
}

.check {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  background: var(--bg);
  border: 1px solid var(--gray-200);
  border-radius: 6px;
  padding: 12px 16px;
}

.check-mark {
  flex-shrink: 0;
  width: 18px; height: 18px;
  background: var(--red);
  border-radius: 4px;
  position: relative;
  margin-top: 2px;
}

.check-mark::after {
  content: "";
  position: absolute;
  top: 2px; left: 5px;
  width: 5px; height: 9px;
  border: solid #fff;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.check-text {
  font-size: 0.84rem;
  color: var(--gray-700);
  line-height: 1.7;
}

.check-text strong { color: var(--ink); }

/* ============================================
   定義リスト
   ============================================ */

.deflist {
  margin: 14px 0;
}

.deflist dt {
  font-weight: 700;
  color: var(--ink);
  font-size: 0.88rem;
  margin-top: 14px;
  margin-bottom: 4px;
  padding-left: 12px;
  border-left: 3px solid var(--red);
}

.deflist dd {
  font-size: 0.84rem;
  color: var(--gray-700);
  line-height: 1.75;
  padding-left: 15px;
}

/* ============================================
   ハンズオン DL ボックス
   ============================================ */

.dl-box {
  background: linear-gradient(135deg, var(--ink) 0%, var(--gray-700) 100%);
  color: #fff;
  border-radius: 12px;
  padding: 32px;
  margin: 24px 0;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: center;
}

@media (max-width: 720px) { .dl-box { grid-template-columns: 1fr; } }

.dl-box h3 {
  color: #fff;
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.dl-box p {
  color: #d4d4d4;
  font-size: 0.86rem;
  line-height: 1.75;
}

.dl-box .meta {
  font-size: 0.72rem;
  color: #a3a3a3;
  margin-top: 8px;
  font-family: "SF Mono", Menlo, monospace;
}

.dl-box .btn {
  background: var(--red);
  color: #fff;
  border-color: var(--red);
  white-space: nowrap;
}

.dl-box .btn:hover {
  background: #fff;
  color: var(--red-deep);
  border-color: #fff;
}

/* ============================================
   配布フォルダ tree
   ============================================ */

.tree {
  background: var(--ink);
  color: #d4d4d4;
  border-radius: 8px;
  padding: 18px 24px;
  font-family: "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.78rem;
  line-height: 1.7;
  margin: 14px 0;
  overflow-x: auto;
  white-space: pre;
}

.tree .em { color: #fca5a5; font-weight: 600; }
.tree .dim { color: #737373; }

/* ============================================
   サイクル図
   ============================================ */

.cycle {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  margin: 18px 0;
  flex-wrap: wrap;
}

.cycle .node {
  width: 110px; height: 110px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.78rem; font-weight: 700;
  text-align: center;
  line-height: 1.4;
  padding: 12px;
}

.cycle .node.n1 { background: var(--red-tint); color: var(--red-deep); border: 2px solid var(--red-mid); }
.cycle .node.n2 { background: var(--gray-100); color: var(--gray-900); border: 2px solid var(--gray-400); }
.cycle .node.n3 { background: var(--gray-700); color: #fff; border: 2px solid var(--gray-700); }
.cycle .node.n4 { background: var(--ink); color: #fff; border: 2px solid var(--ink); }

.cycle .c-arr {
  font-size: 1.2rem;
  color: var(--gray-400);
  padding: 0 12px;
}

/* ============================================
   2 カラム比較
   ============================================ */

.compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 18px 0;
}

@media (max-width: 720px) { .compare { grid-template-columns: 1fr; } }

.compare .col {
  background: var(--bg);
  border: 1px solid var(--gray-200);
  border-radius: 8px;
  padding: 18px 22px;
}

.compare .col.before { border-top: 4px solid var(--gray-500); }
.compare .col.after  { border-top: 4px solid var(--red); }

.compare .col h4 {
  font-size: 0.86rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--ink);
  display: flex; align-items: center; gap: 8px;
}

.compare .col.before h4::before { content: "BEFORE"; background: var(--gray-700); color: #fff; padding: 2px 8px; border-radius: 4px; font-size: 0.64rem; letter-spacing: 0.08em; }
.compare .col.after h4::before  { content: "AFTER"; background: var(--red); color: #fff; padding: 2px 8px; border-radius: 4px; font-size: 0.64rem; letter-spacing: 0.08em; }

.compare ul { list-style: none; padding: 0; }
.compare li {
  font-size: 0.82rem;
  color: var(--gray-700);
  padding: 6px 0 6px 18px;
  position: relative;
  line-height: 1.7;
}

.compare li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--gray-400);
  font-weight: 600;
}

/* ============================================
   事例カード（CASES タブ）
   ============================================ */

.case-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 20px;
  margin: 20px 0;
}

.case {
  background: var(--bg);
  border: 1px solid var(--gray-200);
  border-radius: 10px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all 0.18s;
}

.case:hover {
  border-color: var(--gray-300);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.case-shot {
  width: 100%;
  height: 160px;
  object-fit: cover;
  object-position: top;
  border-bottom: 1px solid var(--gray-200);
  background: var(--gray-100);
}

.case-body {
  padding: 18px 22px 18px;
  flex: 1;
  display: flex; flex-direction: column;
}

.case-tag {
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--red);
  margin-bottom: 6px;
  text-transform: uppercase;
}

.case-name {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--ink);
  margin-bottom: 4px;
  letter-spacing: 0.005em;
}

.case-num {
  font-size: 1.4rem;
  font-weight: 900;
  color: var(--red-deep);
  margin-bottom: 8px;
  line-height: 1.2;
  font-feature-settings: "tnum";
}

.case-body p {
  font-size: 0.82rem;
  color: var(--gray-700);
  line-height: 1.75;
  margin-bottom: 10px;
  flex: 1;
}

.case-src {
  font-size: 0.7rem;
  color: var(--gray-500);
  padding-top: 10px;
  border-top: 1px dashed var(--gray-200);
}

.case-src a { color: var(--gray-700); }

/* ============================================
   ロードマップ
   ============================================ */

.roadmap {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
  margin: 20px 0;
}

@media (max-width: 720px) { .roadmap { grid-template-columns: repeat(2, 1fr); } }

.rm-step {
  background: var(--bg);
  border: 1px solid var(--gray-200);
  border-top: 4px solid var(--red);
  border-radius: 8px;
  padding: 16px;
  text-align: center;
}

.rm-day {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--red-deep);
  margin-bottom: 4px;
  letter-spacing: 0.02em;
}

.rm-when {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--gray-500);
  margin-bottom: 8px;
}

.rm-text {
  font-size: 0.78rem;
  color: var(--gray-700);
  line-height: 1.65;
}

/* ============================================
   フッター
   ============================================ */

.site-footer {
  background: var(--ink);
  color: #d4d4d4;
  margin-top: 40px;
  padding: 40px 24px 24px;
}

.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  text-align: center;
}

.footer-logo {
  height: 36px;
  width: auto;
  display: block;
  margin: 0 auto 14px;
  background: #fff;
  padding: 8px 14px;
  border-radius: 6px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.12);
}

.footer-meta {
  font-size: 0.78rem;
  color: #a3a3a3;
  line-height: 1.8;
  margin-bottom: 18px;
}

.footer-meta strong { color: #fff; }

.footer-copy {
  font-size: 0.7rem;
  color: #737373;
  padding-top: 18px;
  border-top: 1px solid rgba(255,255,255,.08);
}

/* ============================================
   ADK 5層スタック (Agent Development Kit 風)
   ============================================ */

.adk-stack {
  background: var(--ink);
  border-radius: 12px;
  padding: 18px;
  margin: 20px 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.adk-row {
  display: grid;
  grid-template-columns: 140px 1fr 1.4fr;
  gap: 16px;
  align-items: center;
  padding: 16px 20px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 8px;
  transition: background 0.18s, border-color 0.18s;
}

.adk-row:hover {
  background: rgba(196,48,43,0.06);
  border-color: rgba(196,48,43,0.25);
}

.adk-row[data-layer="l1"] { border-left: 4px solid #fca5a5; }
.adk-row[data-layer="l2"] { border-left: 4px solid #fbbf24; }
.adk-row[data-layer="l3"] { border-left: 4px solid #f97316; }
.adk-row[data-layer="l4"] { border-left: 4px solid #38bdf8; }
.adk-row[data-layer="l5"] { border-left: 4px solid #c084fc; }

.adk-tag {
  font-size: 0.78rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: 0.04em;
}

.adk-tree {
  font-family: "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.78rem;
  color: #d4d4d4;
  display: flex;
  flex-direction: column;
  gap: 3px;
  line-height: 1.6;
}

.adk-tree .adk-folder {
  color: #fff;
  font-weight: 600;
}

.adk-tree .adk-folder::before {
  content: "├ ";
  color: #737373;
}

.adk-tree .adk-leaf::before {
  content: "│ └ ";
  color: #737373;
  margin-right: 2px;
}

.adk-desc {
  font-size: 0.82rem;
  color: #a3a3a3;
  line-height: 1.65;
}

@media (max-width: 720px) {
  .adk-row { grid-template-columns: 1fr; gap: 8px; }
}

.adk-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin: 24px 0;
  padding: 14px 20px;
  background: var(--bg);
  border: 1px solid var(--gray-200);
  border-radius: 8px;
  flex-wrap: wrap;
}

.adk-foot-step {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 8px 6px;
  border-radius: 6px;
  background: var(--bg-warm);
  min-width: 110px;
}

.adk-foot-step strong {
  font-size: 0.86rem;
  color: var(--ink);
  font-weight: 700;
}

.adk-foot-step span {
  font-size: 0.72rem;
  color: var(--gray-500);
}

.adk-arrow {
  font-size: 1rem;
  color: var(--gray-400);
  flex-shrink: 0;
}

@media (max-width: 720px) {
  .adk-foot { flex-direction: column; }
  .adk-arrow { transform: rotate(90deg); }
}

/* ============================================
   3D / 2D Graph
   ============================================ */

.graph-tabs {
  display: flex;
  gap: 8px;
  margin: 20px 0 12px;
  border-bottom: 1px solid var(--gray-200);
}

.graph-tab-btn {
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  font-family: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--gray-500);
  padding: 8px 14px 10px;
  cursor: pointer;
  transition: color 0.16s, border-color 0.16s;
}

.graph-tab-btn:hover { color: var(--ink); }

.graph-tab-btn.active {
  color: var(--red-deep);
  border-bottom-color: var(--red);
}

.graph-wrap {
  position: relative;
  margin: 8px 0 20px;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--gray-200);
  background: #0a0a0a;
  box-shadow: var(--shadow-md);
}

.graph-wrap.flat {
  background: #ffffff;
  padding: 18px 14px 12px;
}

.graph-frame {
  width: 100%;
  height: 560px;
  border: 0;
  display: block;
}

.flat-graph {
  width: 100%;
  height: auto;
  display: block;
}

.flat-cap {
  font-size: 0.74rem;
  color: var(--gray-500);
  margin-top: 8px;
  text-align: center;
}

@media (max-width: 720px) { .graph-frame { height: 400px; } }

/* ============================================
   データフロー SVG ラッパー
   ============================================ */

.flow-svg {
  background: var(--bg);
  border: 1px solid var(--gray-200);
  border-radius: 12px;
  padding: 24px;
  margin: 18px 0;
  box-shadow: var(--shadow-sm);
}

.flow-svg svg { width: 100%; height: auto; max-width: 100%; }

.flow-cap {
  font-size: 0.78rem;
  color: var(--gray-500);
  margin-top: 10px;
  text-align: center;
}

/* ============================================
   ユーティリティ
   ============================================ */

.center { text-align: center; }
.mt-32 { margin-top: 32px; }
.mt-48 { margin-top: 48px; }
.mb-32 { margin-bottom: 32px; }

.muted { color: var(--gray-500); }

.divider {
  height: 1px;
  background: var(--gray-200);
  margin: 32px 0;
}

ul.bullets, ol.numbered {
  margin: 12px 0;
  padding-left: 24px;
}

ul.bullets li, ol.numbered li {
  font-size: 0.86rem;
  color: var(--gray-700);
  line-height: 1.75;
  margin-bottom: 4px;
}

ul.bullets li::marker { color: var(--red); }
ol.numbered li::marker { color: var(--red); font-weight: 700; }

/* ============================================
   レスポンシブ調整
   ============================================ */

@media (max-width: 720px) {
  .hero { padding: 32px 24px; }
  .hero h1 { font-size: 1.8rem; }
  .pane-title { font-size: 1.6rem; }
  .pane-pad { padding: 36px 18px 64px; }
  .tab-pane { padding: 36px 18px 64px; }
  .tab-btn { padding: 10px 14px 12px; font-size: 0.78rem; }
}

/* ============================================
   印刷時 (PDF出力対応)
   ============================================ */

@media print {
  html, body { background: #fff !important; }

  /* ヘッダー・タブナビは非表示 */
  .site-header { display: none !important; }
  .site-footer { background: #fff !important; color: #1a1a1a !important; padding: 16px 0 !important; margin-top: 0 !important; }
  .footer-logo { background: #fff !important; box-shadow: none !important; padding: 0 !important; }
  .footer-meta, .footer-copy { color: #404040 !important; }
  .footer-copy { font-size: 9px !important; }

  /* 全タブを順次表示 */
  .tab-pane {
    display: block !important;
    page-break-before: always;
    padding: 14mm 0 8mm !important;
    max-width: none !important;
  }
  .tab-pane:first-of-type { page-break-before: avoid; }

  /* タブ冒頭にタブ名を見出し化（hero でカバー） */
  .pane-head { border-bottom: 2px solid #1a1a1a !important; padding-bottom: 14px !important; margin-bottom: 22px !important; }

  /* フォントサイズ全体を縮小 (PDF 向き) */
  body { font-size: 11.5px !important; line-height: 1.65 !important; }
  .pane-title { font-size: 1.5rem !important; }
  .sec-title { font-size: 1.05rem !important; }
  .sub-title { font-size: 0.92rem !important; }
  .hero h1 { font-size: 1.8rem !important; }
  .hero .hero-sub { font-size: 0.86rem !important; }
  .pane-lead, .sec-lead { font-size: 0.8rem !important; line-height: 1.7 !important; }
  .kpi .num { font-size: 1.4rem !important; }
  .kpi .lbl { font-size: 0.74rem !important; }
  .kpi .src { font-size: 0.62rem !important; }
  .card h3 { font-size: 0.86rem !important; }
  .card p { font-size: 0.72rem !important; }
  .quote-text { font-size: 0.82rem !important; }
  .case-name { font-size: 0.92rem !important; }
  .case-num { font-size: 1.15rem !important; }
  .case-body p { font-size: 0.7rem !important; }
  .check-text { font-size: 0.74rem !important; }
  .deflist dt { font-size: 0.78rem !important; }
  .deflist dd { font-size: 0.72rem !important; }
  pre, code { font-size: 0.7rem !important; }
  table { font-size: 0.74rem !important; }

  /* 3D グラフは隠す、2D を表示 */
  [data-graph-view="3d"] { display: none !important; }
  [data-graph-view="2d"] { display: block !important; }
  [data-graph-view="2d"][hidden] { display: block !important; }
  .graph-tabs { display: none !important; }
  .graph-wrap.flat {
    border: 1px solid #d4d4d4 !important;
    box-shadow: none !important;
    page-break-inside: avoid;
  }

  /* DL ボタン・CTA 系は非表示 */
  .hero-cta, .dl-box .btn, .graph-cta, .btn { display: none !important; }
  .dl-box {
    background: #f5f5f5 !important;
    color: #1a1a1a !important;
    border: 1px solid #d4d4d4 !important;
    grid-template-columns: 1fr !important;
  }
  .dl-box h3, .dl-box p { color: #1a1a1a !important; }
  .dl-box .meta { color: #404040 !important; }

  /* 改ページ制御 */
  .sec, .case, .step, .quote, .kpi, .adk-row, .step-card, .timeline-item, table, pre, .shot, .flow-svg {
    page-break-inside: avoid;
  }
  h1, h2, h3, h4 { page-break-after: avoid; }

  /* 暗背景の box は印刷時に枠付き白背景へ */
  .tree, pre {
    background: #fafafa !important;
    color: #1a1a1a !important;
    border: 1px solid #d4d4d4 !important;
  }
  .tree .em { color: #c4302b !important; }
  .tree .dim { color: #6b7280 !important; }
  .adk-stack {
    background: #fafafa !important;
    border: 1px solid #d4d4d4 !important;
  }
  .adk-row {
    background: #ffffff !important;
    border: 1px solid #d4d4d4 !important;
  }
  .adk-tag, .adk-tree, .adk-tree .adk-folder, .adk-desc {
    color: #1a1a1a !important;
  }
  .adk-tree .adk-folder::before, .adk-tree .adk-leaf::before { color: #6b7280 !important; }
  .adk-tree .adk-leaf { color: #404040 !important; }

  /* ライトボックスは印刷しない */
  #lightbox { display: none !important; }
}