/*
  Case Studies(case-studies.html)専用。TOP/About/Services/career.html/
  web-production.html/training.html/ai-program.htmlのトークンを継承。
  デザイン強度は★3〜4(実績を見せるページのためビジュアルの質は高めに)。
  カテゴリーごとに見せ方を変える方針:
    人材紹介   → 人物写真+ストーリー(横並びカルーセル、最初の1件を大きく)
    Webコンテンツ制作 → 非対称グリッド(1件を大きく、2件を補助)
    研修       → 学ぶ前/取り組んだ内容/できるようになったことのミニフロー
  画像の角丸・枠はcss/buttons.cssの.tv-photo-frame/--lgを共通利用し、
  新しい角丸値は追加していない。受注金額はカード表面には出さず、
  モーダル内に控えめなテキストとしてのみ表示する。
*/

.tl-head { display: flex; justify-content: space-between; align-items: baseline; gap: 24px; margin-bottom: 40px; }
.tl-head h2 { margin: 0; font-family: var(--font-heading); font-size: clamp(22px,2.1vw,30px); font-weight: 700; letter-spacing: .03em; color: var(--navy); }
.tl-eyebrow { display: flex; align-items: center; gap: 10px; font-family: var(--font-latin); font-size: 11px; letter-spacing: .18em; color: #8693b4; white-space: nowrap; }
.tl-eyebrow::before { content: ""; width: 18px; height: 1px; background: var(--gradient); }
@media (max-width: 760px) { .tl-head { flex-direction: column; align-items: flex-start; gap: 12px; margin-bottom: 28px; } }

/* ---------- Hero(写真なし、静かなブランドHero) ---------- */
.cse-hero { position: relative; margin-top: var(--header-height); min-height: 560px; display: flex; align-items: center; overflow: hidden; background: linear-gradient(165deg, var(--surface) 0%, var(--background) 65%); }
@media (max-width: 760px) { .cse-hero { min-height: 440px; } }

.cse-hero-flow { position: absolute; inset: 0; z-index: 0; pointer-events: none; opacity: .55;
  mask-image: linear-gradient(100deg, transparent 0%, transparent 26%, #000 58%, #000 100%);
  -webkit-mask-image: linear-gradient(100deg, transparent 0%, transparent 26%, #000 58%, #000 100%);
}
.cse-hero-flow img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: right center; }
@media (max-width: 760px) {
  .cse-hero-flow { opacity: .4;
    mask-image: radial-gradient(120% 100% at 100% 100%, #000 0%, transparent 62%);
    -webkit-mask-image: radial-gradient(120% 100% at 100% 100%, #000 0%, transparent 62%);
  }
}

.cse-hero-inner { position: relative; z-index: 1; max-width: 960px; min-width: 0; width: 100%; }
.cse-hero-inner .tl-eyebrow { margin-bottom: 22px; }
.cse-hero h1 { margin: 0 0 20px; font-family: var(--font-heading); font-size: clamp(28px,3.6vw,42px); font-weight: 700; line-height: 1.5; color: var(--navy); }
.cse-hero-lead { margin: 0; color: var(--secondary-text); line-height: 1.9; font-size: 15.5px; max-width: 460px; }

/* ---------- カテゴリーナビ ---------- */
.cse-cat-nav { border-top: 1px solid var(--op-border); border-bottom: 1px solid var(--op-border); background: var(--background); }
.cse-cat-nav-inner { display: flex; gap: clamp(28px,3.4vw,48px); padding-top: 20px; padding-bottom: 20px; }
.cse-cat-nav-inner a { font-family: var(--font-latin); font-size: 13px; letter-spacing: .04em; color: var(--secondary-text); padding-bottom: 5px; border-bottom: 2px solid transparent; transition: color var(--duration-hover), border-color var(--duration-hover); }
.cse-cat-nav-inner a:hover { color: var(--navy); border-color: var(--border-hover); }
@media (max-width: 560px) { .cse-cat-nav-inner { gap: 20px; overflow-x: auto; -webkit-overflow-scrolling: touch; } }

/* ---------- セクション共通 ---------- */
.cse-section { padding-top: 72px; padding-bottom: 72px; }
@media (max-width: 760px) { .cse-section { padding-top: 44px; padding-bottom: 44px; } }
.cse-section--tint { background: var(--surface); }
.cse-lead { margin: 0 0 32px; max-width: 680px; color: var(--secondary-text); line-height: 1.95; font-size: 16px; }
.cse-note { margin: 28px 0 0; font-size: 12px; line-height: 1.8; color: #96a1b8; }

/* ---------- カルーセル共通(矢印/ページャ) ---------- */
.cse-cr-wrap { position: relative; overflow: hidden; }
.cse-cr-track { display: flex; gap: 20px; }
.cse-cr-track.is-mobile { flex-wrap: nowrap; transition: transform .35s var(--easing); }
.cse-cr-controls { display: flex; align-items: center; justify-content: center; gap: 18px; margin-top: 32px; }
.cse-cr-arrow { width: 40px; height: 40px; border-radius: 999px; border: 1px solid var(--op-border); background: rgba(255,255,255,.7); display: flex; align-items: center; justify-content: center; color: var(--navy); cursor: pointer; transition: border-color var(--duration-hover), transform var(--duration-hover); }
.cse-cr-arrow[hidden] { display: none; }
.cse-cr-arrow svg { width: 16px; height: 16px; }
.cse-cr-arrow:hover:not(:disabled) { border-color: var(--border-hover); transform: translateY(-1px); }
.cse-cr-arrow:disabled { opacity: .3; cursor: not-allowed; }
.cse-cr-pager { font-family: var(--font-number); font-size: 13px; color: var(--secondary-text); min-width: 44px; text-align: center; }

/* ---------- 転職者の声(人物中心。最初の1件を大きく) ---------- */
.cse-cr-item { flex: 1 1 0; min-width: 0; }
.cse-cr-item--featured { flex: 1.5 1 0; }
.cse-cr-track.is-mobile .cse-cr-item,
.cse-cr-track.is-mobile .cse-cr-item--featured { flex: 0 0 100%; }
.cse-cr-card { height: 100%; display: flex; flex-direction: column; border: 1px solid var(--op-border); border-radius: var(--radius-panel); background: linear-gradient(120deg, rgba(255,255,255,.9), rgba(255,255,255,.65)); overflow: hidden; transition: border-color var(--duration-hover), box-shadow var(--duration-hover); }
.cse-cr-card:hover { border-color: var(--border-hover); box-shadow: 0 22px 50px -30px rgba(46,69,123,.22); }
.cse-cr-card-img { margin: 14px; margin-bottom: 0; }
.cse-cr-card-img img { display: block; width: 100%; aspect-ratio: 16/10; object-fit: cover; }
.cse-cr-item--featured .cse-cr-card-img img { aspect-ratio: 4/3; }
.cse-cr-card-body { padding: 18px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.cse-cr-card-meta { margin: 0 0 8px; font-family: var(--font-latin); font-size: 11px; letter-spacing: .04em; color: #8693b4; }
.cse-cr-card-title { margin: 0 0 10px; font-family: var(--font-heading); font-size: 16px; font-weight: 700; color: var(--navy); line-height: 1.5; }
.cse-cr-item--featured .cse-cr-card-title { font-size: 20px; }
.cse-cr-card-desc { margin: 0 0 16px; font-size: 13px; line-height: 1.8; color: var(--secondary-text); }
.cse-ba { display: flex; flex-direction: column; gap: 8px; padding: 14px 16px; border: 1px solid var(--op-border); border-radius: 12px; background: var(--surface); margin-bottom: 16px; }
.cse-ba-row { display: flex; gap: 10px; align-items: baseline; }
.cse-ba-label { flex: none; width: 52px; font-family: var(--font-latin); font-size: 10px; letter-spacing: .08em; color: #8693b4; }
.cse-ba-label--after { color: var(--accent-blue); }
.cse-ba-text { font-size: 12.5px; line-height: 1.7; color: var(--secondary-text); }
.cse-cr-card-quote { margin: 0 0 18px; font-size: 13.5px; font-weight: 600; line-height: 1.8; color: var(--navy); border-left: 2px solid var(--accent-blue); padding-left: 12px; }
.cse-cr-card-detail { margin-top: auto; align-self: flex-start; background: none; border: none; padding: 0; cursor: pointer; font-family: var(--font-latin); font-size: 12.5px; color: var(--accent-blue); display: inline-flex; align-items: center; gap: 6px; }
.cse-cr-card-detail span { transition: transform var(--duration-hover) var(--easing); }
.cse-cr-card-detail:hover span { transform: translateX(4px); }
@media (max-width: 768px) { .cse-cr-item--featured .cse-cr-card-img img { aspect-ratio: 16/10; } .cse-cr-item--featured .cse-cr-card-title { font-size: 18px; } }

/* ---------- Webコンテンツ制作実績(非対称: 1件を大きく) ---------- */
.cse-work-grid { display: grid; grid-template-columns: minmax(0,1.3fr) minmax(0,1fr); gap: clamp(20px,2.4vw,28px); }
.cse-work-secondary { display: flex; flex-direction: column; gap: clamp(16px,2vw,20px); }
.cse-work-card { position: relative; border: 1px solid var(--op-border); border-radius: var(--radius-panel); background: linear-gradient(120deg, rgba(255,255,255,.9), rgba(255,255,255,.65)); overflow: hidden; transition: border-color var(--duration-hover), box-shadow var(--duration-hover); }
.cse-work-card:hover { border-color: var(--border-hover); box-shadow: 0 22px 50px -30px rgba(46,69,123,.22); }
.cse-work-thumb { margin: 14px; margin-bottom: 0; position: relative; }
.cse-work-thumb img { display: block; width: 100%; object-fit: cover; }
.cse-work-primary .cse-work-thumb img { aspect-ratio: 16/10; }
.cse-work-secondary .cse-work-thumb img { aspect-ratio: 16/9; }
.cse-demo-badge { position: absolute; top: 10px; left: 10px; z-index: 2; font-family: var(--font-latin); font-size: 10px; letter-spacing: .1em; color: #fff; background: rgba(15,23,42,.75); border-radius: 999px; padding: 5px 12px; }
.cse-work-body { padding: 18px 22px 24px; }
.cse-work-primary .cse-work-body { padding: 24px 28px 30px; }
.cse-work-body h3 { margin: 0 0 10px; font-family: var(--font-heading); font-weight: 700; color: var(--navy); }
.cse-work-primary .cse-work-body h3 { font-size: 20px; }
.cse-work-secondary .cse-work-body h3 { font-size: 15px; margin-bottom: 8px; }
.cse-work-meta { margin: 0 0 6px; font-size: 12.5px; line-height: 1.75; color: var(--secondary-text); }
.cse-work-meta strong { color: var(--navy); font-weight: 600; }
.cse-work-link { margin-top: 12px; display: inline-flex; align-items: center; gap: 6px; font-family: var(--font-latin); font-size: 12px; color: var(--accent-blue); }
.cse-work-link span { transition: transform var(--duration-hover) var(--easing); }
.cse-work-card:hover .cse-work-link span { transform: translateX(4px); }
@media (max-width: 900px) { .cse-work-grid { grid-template-columns: 1fr; } }

/* ---------- 研修・学習支援の声(学ぶ前→取り組んだ内容→できるようになったこと) ---------- */
.cse-tr-track { display: flex; gap: 20px; }
.cse-tr-track.is-mobile { flex-wrap: nowrap; transition: transform .35s var(--easing); }
.cse-tr-item { flex: 1 1 0; min-width: 0; }
.cse-tr-track.is-mobile .cse-tr-item { flex: 0 0 100%; }
.cse-tr-card { height: 100%; display: flex; flex-direction: column; border: 1px solid var(--op-border); border-radius: var(--radius-panel); background: rgba(255,255,255,.6); overflow: hidden; transition: border-color var(--duration-hover); }
.cse-tr-card:hover { border-color: var(--border-hover); }
.cse-tr-card-img { margin: 14px; margin-bottom: 0; }
.cse-tr-card-img img { display: block; width: 100%; aspect-ratio: 16/10; object-fit: cover; }
.cse-tr-card-body { padding: 16px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.cse-tr-card-title { margin: 8px 0 16px; font-family: var(--font-heading); font-size: 16px; font-weight: 700; color: var(--navy); line-height: 1.55; }
.cse-tr-steps { display: flex; flex-direction: column; border-top: 1px solid var(--op-border); margin-bottom: 16px; }
.cse-tr-step { padding: 10px 0; border-bottom: 1px solid var(--op-border); display: flex; flex-direction: column; gap: 3px; }
.cse-tr-step-label { font-family: var(--font-latin); font-size: 10px; letter-spacing: .08em; color: #8693b4; }
.cse-tr-step-text { font-size: 12.5px; line-height: 1.7; color: var(--secondary-text); }
.cse-tr-card-quote { margin: 0 0 18px; font-size: 13.5px; font-weight: 600; line-height: 1.8; color: var(--navy); border-left: 2px solid var(--accent-blue); padding-left: 12px; }

/* ---------- モーダル ---------- */
#cse-modal-overlay { position: fixed; inset: 0; z-index: 1100; display: flex; align-items: center; justify-content: center; padding: 24px; background: rgba(10,15,30,.55); opacity: 0; visibility: hidden; transition: opacity .25s ease; }
#cse-modal-overlay.is-open { opacity: 1; visibility: visible; }
#cse-modal-panel { position: relative; width: 100%; max-width: 640px; max-height: 86vh; overflow-y: auto; background: #fff; border-radius: var(--radius-panel); padding: 48px 44px 44px; box-shadow: var(--shadow); }
@media (max-width: 600px) { #cse-modal-panel { padding: 44px 22px 32px; } }
#cse-modal-close { position: absolute; top: 16px; right: 16px; width: 36px; height: 36px; border-radius: 999px; border: 1px solid var(--op-border); background: #fff; display: flex; align-items: center; justify-content: center; color: var(--navy); cursor: pointer; }
#cse-modal-close svg { width: 16px; height: 16px; }
#cse-modal-close:hover { border-color: var(--border-hover); }
.cse-modal-meta { font-size: 12px; color: #8693b4; margin-bottom: 10px; }
.cse-modal-title { font-family: var(--font-heading); font-size: clamp(20px,2.2vw,26px); font-weight: 700; color: var(--navy); margin: 0 0 18px; line-height: 1.55; }
.cse-modal-quote { font-size: 15px; color: var(--navy); font-weight: 600; border-left: 2px solid var(--accent-blue); padding-left: 14px; margin: 0 0 26px; line-height: 1.85; }
.cse-modal-ba { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 30px; padding: 18px; border: 1px solid var(--op-border); border-radius: 14px; background: var(--surface); }
@media (max-width: 600px) { .cse-modal-ba { grid-template-columns: 1fr; } }
.cse-modal-ba-label { display: block; font-family: var(--font-latin); font-size: 10px; letter-spacing: .1em; color: #8693b4; margin-bottom: 4px; }
.cse-modal-ba-label--after { color: var(--accent-blue); }
.cse-modal-ba-text { font-size: 13px; line-height: 1.7; color: var(--secondary-text); }
.cse-modal-section { margin-bottom: 22px; }
.cse-modal-section-title { margin: 0 0 8px; font-family: var(--font-heading); font-size: 14px; font-weight: 700; color: var(--navy); }
.cse-modal-section p { margin: 0; font-size: 14px; line-height: 1.85; color: var(--secondary-text); }
.cse-modal-amount-note { margin: 0 0 6px; font-size: 13px; line-height: 1.8; color: var(--secondary-text); }
.cse-modal-fine-note { margin: 0; font-size: 11px; color: #96a1b8; }
.cse-modal-cta { margin-top: 32px; padding-top: 28px; border-top: 1px solid var(--op-border); }
.cse-modal-cta h3 { margin: 0 0 10px; font-family: var(--font-heading); font-size: 17px; font-weight: 700; color: var(--navy); line-height: 1.5; }
.cse-modal-cta p { margin: 0 0 18px; font-size: 13.5px; line-height: 1.85; color: var(--secondary-text); }

/* ---------- CTA(事例を見た後の相談導線、画像なしの静かな通常CTA) ---------- */
.cse-final-cta { padding: 72px 0 96px; border-top: 1px solid var(--op-border); text-align: center; }
@media (max-width: 760px) { .cse-final-cta { padding: 48px 0 64px; } }

.cse-final-cta-inner { max-width: 760px; margin: 0 auto; }
.cse-final-cta-inner .tl-eyebrow { justify-content: center; margin-bottom: 20px; }
.cse-final-cta-title { margin: 0 0 16px; font-family: var(--font-heading); font-size: clamp(24px,2.4vw,32px); font-weight: 700; color: var(--navy); line-height: 1.5; }
.cse-final-cta-desc { margin: 0 0 28px; color: var(--secondary-text); line-height: 1.9; font-size: 14.5px; }