/* Case study detail + listing pages */
  .cs-back{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--text-on-ink-dim);}
  .cs-back:hover{color:var(--text-on-ink);}
  .cs-hero{background:linear-gradient(180deg, var(--ink) 0%, var(--ink-2) 100%);color:var(--text-on-ink);padding:64px 0 0;}
  .cs-hero .cs-tag{font-size:13px;letter-spacing:0.08em;text-transform:uppercase;color:var(--signal);font-weight:600;margin:28px 0 18px;font-family:'IBM Plex Mono',monospace;}
  .cs-hero h1{font-size:40px;line-height:1.14;margin-bottom:16px;max-width:760px;letter-spacing:-0.01em;}
  .cs-hero .cs-sub{font-size:16.5px;color:var(--text-on-ink-dim);max-width:640px;line-height:1.6;margin-bottom:40px;}

  .cs-glance{display:grid;grid-template-columns:repeat(4,1fr);gap:2px;background:rgba(0,0,0,0.06);}
  .cs-glance .tile{background:var(--paper);padding:30px 22px;}
  .cs-glance .tile .num{font-family:'IBM Plex Mono',monospace;font-size:28px;font-weight:700;color:var(--signal-on-light);line-height:1;margin-bottom:10px;}
  .cs-glance .tile .lbl{font-size:12px;color:var(--text-on-paper-dim);line-height:1.4;text-transform:uppercase;letter-spacing:0.01em;}

  .cs-section{padding:72px 0;}
  .cs-section h2{font-size:25px;margin-bottom:22px;font-family:'Space Grotesk',sans-serif;font-weight:600;letter-spacing:-0.005em;}
  .cs-section .cs-eyebrow{font-size:13px;letter-spacing:0.08em;text-transform:uppercase;color:var(--text-on-paper-dim);font-weight:600;margin:0;}
  .cs-client p{font-size:16px;line-height:1.7;color:var(--text-on-paper-dim);max-width:760px;}

  .cs-situation ul{margin:0;list-style:none;max-width:760px;}
  .cs-situation li{font-size:15.5px;line-height:1.65;color:var(--text-on-paper-dim);padding-left:22px;position:relative;margin-bottom:14px;}
  .cs-situation li::before{content:'▪';position:absolute;left:0;color:var(--signal-on-light);}

  .cs-approach{background:var(--ink);}
  .cs-approach h2{color:var(--text-on-ink);}
  .cs-approach .cs-eyebrow{color:var(--text-on-ink-dim);}
  .cs-approach-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:2px;background:rgba(255,255,255,0.06);margin-top:32px;}
  .cs-approach-grid .step{background:var(--ink-2);padding:28px 24px;}
  .cs-approach-grid .step .num{font-family:'IBM Plex Mono',monospace;font-size:13px;color:var(--signal);margin-bottom:16px;}
  .cs-approach-grid .step h4{color:var(--text-on-ink);font-size:16.5px;font-weight:600;margin-bottom:9px;}
  .cs-approach-grid .step p{color:var(--text-on-ink-dim);font-size:14px;line-height:1.55;}

  .cs-highlight{font-size:16px;line-height:1.7;color:var(--text-on-paper);font-weight:500;margin-bottom:28px;padding:20px 24px;background:var(--paper-2);border-left:3px solid var(--signal-on-light);max-width:820px;}

  .cs-table-wrap{overflow-x:auto;max-width:100%;}
  .cs-table{width:100%;min-width:560px;border-collapse:collapse;font-size:14.5px;margin-top:4px;}
  .cs-table th, .cs-table td{text-align:left;padding:14px 16px;border-bottom:1px solid rgba(0,0,0,0.08);vertical-align:top;}
  .cs-table th{font-family:'IBM Plex Mono',monospace;font-size:11px;text-transform:uppercase;letter-spacing:0.03em;color:var(--text-on-paper-dim);}
  .cs-table td:last-child{color:var(--text-on-paper-dim);}
  .cs-table td:first-child{color:var(--text-on-paper);font-weight:500;}
  .cs-table-scroll-hint{display:none;font-size:12px;color:var(--text-on-paper-dim);margin-top:6px;}

  .cs-subhead{margin:36px 0 14px;font-size:13px;font-family:'IBM Plex Mono',monospace;text-transform:uppercase;letter-spacing:0.04em;color:var(--text-on-paper-dim);}

  .cs-why{background:linear-gradient(180deg, var(--ink) 0%, #0A0F17 100%);color:var(--text-on-ink);padding:72px 0;}
  .cs-why h2{color:var(--text-on-ink);}
  .cs-why .cs-eyebrow{color:var(--text-on-ink-dim);}
  .cs-why p{font-size:16px;line-height:1.75;color:var(--text-on-ink-dim);max-width:820px;}

  .cs-nda{font-size:12.5px;color:var(--text-on-paper-dim);margin-top:28px;font-style:italic;max-width:760px;}

  .cs-related{padding:64px 0;border-top:1px solid rgba(0,0,0,0.08);}
  .cs-related h2{font-size:19px;margin-bottom:20px;}
  .cs-related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
  .cs-related-card{border:1px solid rgba(0,0,0,0.1);border-radius:2px;padding:18px 20px;}
  .cs-related-card .cs-list-tag{font-family:'IBM Plex Mono',monospace;font-size:10.5px;text-transform:uppercase;letter-spacing:0.03em;color:var(--text-on-paper-dim);margin-bottom:8px;}
  .cs-related-card h4{font-size:14.5px;font-weight:600;margin-bottom:10px;line-height:1.35;}
  .cs-related-card a.cs-read{font-size:13px;font-weight:600;color:var(--signal-on-light);}

  .cs-final-cta{padding:72px 0 88px;text-align:center;}
  .cs-final-cta h2{margin:0 auto 22px;}
  .cs-final-cta .btn{margin:0 auto;}

  /* Listing grid (used both on /case-studies and the homepage teaser) */
  .cs-filters{display:flex;flex-wrap:wrap;gap:8px;margin:32px 0 8px;}
  .cs-filter-btn{
    font-family:'IBM Plex Mono',monospace;font-size:12.5px;letter-spacing:0.02em;
    background:transparent;border:1px solid rgba(255,255,255,0.18);color:var(--text-on-ink-dim);
    padding:8px 14px;border-radius:20px;cursor:pointer;transition:all .15s;
  }
  .cs-filter-btn:hover{color:var(--text-on-ink);border-color:rgba(255,255,255,0.4);}
  .cs-filter-btn.active{background:var(--signal);border-color:var(--signal);color:#fff;}

  .cs-list-grid{margin-top:32px;display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
  .cs-list-card{background:var(--paper-2);border-radius:2px;padding:28px 24px;display:flex;flex-direction:column;border-top:3px solid var(--signal-on-light);transition:opacity .2s, transform .2s;}
  .cs-list-card.cs-hidden{display:none;}
  .cs-list-card:nth-child(3n+2){border-top-color:var(--cyan);}
  .cs-list-card:nth-child(3n+3){border-top-color:var(--purple);}
  .cs-list-card .cs-list-tag{font-family:'IBM Plex Mono',monospace;font-size:11px;text-transform:uppercase;letter-spacing:0.03em;color:var(--text-on-paper-dim);margin-bottom:14px;}
  .cs-list-card h3{font-size:18px;font-weight:600;margin-bottom:14px;line-height:1.32;color:var(--text-on-paper);}
  .cs-list-card .cs-list-stat{font-family:'IBM Plex Mono',monospace;font-size:22px;font-weight:700;color:var(--signal-on-light);margin-bottom:4px;}
  .cs-list-card .cs-list-stat-label{font-size:11.5px;color:var(--text-on-paper-dim);text-transform:uppercase;letter-spacing:0.01em;margin-bottom:18px;line-height:1.4;}
  .cs-list-card a.cs-read{margin-top:auto;font-size:14px;font-weight:600;color:var(--signal-on-light);}
  .cs-view-all{margin-top:40px;text-align:center;}

  .cs-listing-hero{background:linear-gradient(180deg, var(--ink) 0%, var(--ink-2) 100%);color:var(--text-on-ink);padding:64px 0 60px;}
  .cs-listing-hero .kicker{color:var(--text-on-ink-dim);}
  .cs-listing-hero h1{font-size:42px;max-width:640px;margin-bottom:14px;}
  .cs-listing-hero p{font-size:16.5px;color:var(--text-on-ink-dim);max-width:600px;line-height:1.6;}

  @media(max-width:900px){
    .cs-glance{grid-template-columns:1fr 1fr;}
    .cs-hero h1{font-size:29px;}
    .cs-list-grid{grid-template-columns:1fr;}
    .cs-related-grid{grid-template-columns:1fr;}
    .cs-table-scroll-hint{display:block;}
  }