:root{
    --void:#071527;
    --ink:#0B1F3A;
    --ink-2:#12294B;
    --paper:#F1F3EF;
    --paper-line:#DCE2DD;
    --card:#FFFFFF;
    --current:#12B6C9;
    --current-deep:#0E8FA0;
    --amber:#F2A93B;
    --amber-deep:#D98F1F;
    --slate:#55637A;
    --slate-light:#8FA0B8;
    --mist:#C9D6E8;
    --line:#22375C;
    --serif: "Source Serif 4", Georgia, serif;
    --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --max: 1180px;
    --gutter: 56px;
  }

  *{ box-sizing:border-box; }
  html{ scroll-behavior:smooth; }
  @media (prefers-reduced-motion: reduce){
    html{ scroll-behavior:auto; }
    *{ animation-duration:0.001ms !important; transition-duration:0.001ms !important; }
  }
  body{
    margin:0;
    font-family:var(--sans);
    color:var(--ink);
    background:var(--paper);
    line-height:1.5;
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3{
    font-family:var(--serif);
    margin:0;
    font-weight:600;
    letter-spacing:-0.01em;
  }
  p{ margin:0; }
  a{ color:inherit; text-decoration:none; }
  ul{ margin:0; padding:0; list-style:none; }
  img,svg{ display:block; max-width:100%; }
  button{ font-family:inherit; }

  .wrap{
    max-width:var(--max);
    margin:0 auto;
    padding:0 32px;
  }

  /* ---------- focus ---------- */
  a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible{
    outline:2px solid var(--current);
    outline-offset:3px;
    border-radius:2px;
  }

  /* ---------- nav ---------- */
  .nav{
    position:sticky; top:0; z-index:100;
    background:rgba(7,21,39,0.86);
    backdrop-filter:blur(10px);
    border-bottom:1px solid rgba(255,255,255,0.08);
  }
  .nav .wrap{
    display:flex; align-items:center; justify-content:space-between;
    height:72px;
  }
  .brand{ display:flex; align-items:center; gap:10px; }
  .brand-mark{ width:26px; height:26px; flex:0 0 auto; }
  .brand-text{ display:flex; flex-direction:column; line-height:1.1; }
  .brand-text .name{ font-family:var(--serif); font-weight:600; font-size:19px; color:#fff; letter-spacing:0.01em; }
  .brand-text .by{ font-size:10.5px; color:var(--slate-light); margin-top:1px; }
  .nav-links{ display:flex; align-items:center; gap:34px; }
  .nav-links a{ font-size:14.5px; color:var(--mist); transition:color .15s ease; }
  .nav-links a:hover{ color:#fff; }
  .nav-links a[aria-current="page"]{ color:#fff; }
  .nav-drop{ position:relative; }
  .nav-drop > span{ font-size:14.5px; color:var(--mist); cursor:default; display:inline-flex; align-items:center; gap:5px; }
  .nav-drop > span svg{ width:11px; height:11px; }
  .nav-drop:hover > span{ color:#fff; }
  .nav-drop-menu{
    position:absolute; top:100%; left:50%; transform:translateX(-50%) translateY(4px);
    background:var(--ink-2); border:1px solid rgba(255,255,255,0.12); border-radius:6px;
    padding:8px; min-width:220px; opacity:0; visibility:hidden; transition:opacity .15s ease, transform .15s ease;
    box-shadow:0 12px 28px rgba(0,0,0,0.35);
  }
  .nav-drop:hover .nav-drop-menu, .nav-drop:focus-within .nav-drop-menu{ opacity:1; visibility:visible; transform:translateX(-50%) translateY(8px); }
  .nav-drop-menu a{ display:block; padding:10px 12px; border-radius:4px; font-size:14px; color:var(--mist); }
  .nav-drop-menu a:hover{ background:rgba(255,255,255,0.06); color:#fff; }
  .nav-drop-menu a .d{ display:block; font-size:11.5px; color:var(--slate-light); margin-top:2px; }
  .nav-drop-menu a:hover .d{ color:var(--mist); }
  .btn{
    display:inline-flex; align-items:center; justify-content:center;
    padding:11px 22px; border-radius:3px; font-size:14.5px; font-weight:600;
    border:1px solid transparent; cursor:pointer; white-space:nowrap;
  }
  .btn-amber{ background:var(--amber); color:#241300; }
  .btn-amber:hover{ background:var(--amber-deep); }
  .btn-ghost-dark{ background:transparent; color:#fff; border-color:rgba(255,255,255,0.28); }
  .btn-ghost-dark:hover{ border-color:rgba(255,255,255,0.6); }
  .btn-ghost-light{ background:transparent; color:var(--ink); border-color:rgba(11,31,58,0.22); }
  .btn-ghost-light:hover{ border-color:rgba(11,31,58,0.5); }
  .nav-cta{ display:flex; align-items:center; gap:18px; }
  .menu-toggle{ display:none; background:none; border:none; color:#fff; padding:6px; cursor:pointer; }

  /* ---------- hero ---------- */
  .hero{
    background:
      radial-gradient(ellipse 900px 500px at 12% -10%, rgba(18,182,201,0.16), transparent 60%),
      var(--void);
    position:relative;
    overflow:hidden;
    padding:96px 0 88px;
  }
  .hero::before{
    content:"";
    position:absolute; inset:0;
    background-image:
      linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px);
    background-size:42px 42px;
    mask-image:linear-gradient(to bottom, black, transparent 85%);
    pointer-events:none;
  }
  .hero .wrap{ position:relative; display:grid; grid-template-columns:1.05fr 0.95fr; gap:56px; align-items:center; }
  .hero-kicker{ display:flex; align-items:center; gap:10px; margin-bottom:22px; }
  .hero-kicker .node{ width:9px; height:9px; border-radius:50%; background:var(--current); box-shadow:0 0 0 4px rgba(18,182,201,0.18); }
  .hero-kicker span{ font-size:14px; color:var(--mist); }
  .hero h1{
    font-size:clamp(34px, 4.4vw, 54px);
    line-height:1.12;
    color:#fff;
    max-width:16.5ch;
  }
  .hero h1 em{ font-style:normal; color:var(--current); }
  .hero p.lede{
    margin-top:22px;
    font-size:17px;
    line-height:1.6;
    color:var(--mist);
    max-width:46ch;
  }
  .hero-actions{ display:flex; gap:14px; margin-top:34px; }
  .hero-actions .btn{ padding:13px 24px; font-size:15px; }

  /* hero panel: live benchmark mock */
  .panel{
    background:linear-gradient(180deg, rgba(255,255,255,0.045), rgba(255,255,255,0.02));
    border:1px solid rgba(255,255,255,0.12);
    border-radius:6px;
    padding:22px;
  }
  .panel-head{ display:flex; align-items:center; justify-content:space-between; margin-bottom:16px; }
  .panel-head .t{ font-size:12.5px; color:var(--slate-light); }
  .panel-head .live{ display:flex; align-items:center; gap:6px; font-size:11.5px; color:var(--current); }
  .live-dot{ width:6px; height:6px; border-radius:50%; background:var(--current); animation:pulse 2s infinite; }
  @keyframes pulse{ 0%,100%{ opacity:1; } 50%{ opacity:0.35; } }
  .engine-rows{ display:flex; flex-direction:column; gap:10px; }
  .engine-row{
    display:flex; align-items:center; gap:12px;
    background:rgba(255,255,255,0.04);
    border:1px solid rgba(255,255,255,0.08);
    border-radius:4px; padding:10px 14px;
  }
  .engine-row .n{ font-family:var(--serif); font-weight:600; font-size:14.5px; color:#fff; width:64px; flex:0 0 auto; }
  .engine-row svg{ flex:1; height:22px; color:var(--current); opacity:0.85; }
  .engine-row .check{ width:16px; height:16px; color:var(--current); flex:0 0 auto; }
  .verdict{
    margin-top:14px; display:flex; align-items:center; justify-content:space-between;
    background:rgba(242,169,59,0.1); border:1px solid rgba(242,169,59,0.35);
    border-radius:4px; padding:12px 16px;
  }
  .verdict .label{ font-size:13.5px; color:#fff; font-weight:600; }
  .verdict .sub{ font-size:11.5px; color:var(--mist); margin-top:2px; }
  .verdict .badge{ font-size:11px; font-weight:700; color:#241300; background:var(--amber); padding:5px 10px; border-radius:3px; }

  /* ---------- rail / section shell ---------- */
  .rail{ position:relative; }
  .rail::before{
    content:"";
    position:absolute; top:0; bottom:0; left:var(--gutter);
    width:2px; background:var(--paper-line);
  }
  .rail-progress{
    position:absolute; top:0; left:var(--gutter); width:2px; height:0;
    background:linear-gradient(180deg, var(--current), var(--current-deep));
    box-shadow:0 0 10px rgba(18,182,201,0.55);
    transition:height .08s linear;
  }
  section.block{ position:relative; padding:76px 0 76px calc(var(--gutter) + 44px); overflow:hidden; }
  section.block .wrap{ padding-left:0; padding-right:32px; max-width:calc(var(--max) - var(--gutter) - 44px + 32px); position:relative; z-index:2; }
  .node-mark{
    position:absolute; left:calc(var(--gutter) - 7px); top:80px;
    width:16px; height:16px; background:var(--paper); z-index:3;
  }
  .node-mark svg{ width:16px; height:16px; color:var(--slate); }
  section.block.on-dark .node-mark{ background:var(--ink); }
  section.block.on-dark .node-mark svg{ color:var(--current); }

  .kicker{ font-size:13.5px; color:var(--current-deep); font-weight:600; margin-bottom:10px; }
  section.block.on-dark .kicker{ color:var(--current); }
  .block h2{ font-size:clamp(26px, 3vw, 34px); color:var(--ink); max-width:16ch; line-height:1.15; }
  section.block.on-dark .block h2, section.block.on-dark h2{ color:#fff; }
  .block .intro{ margin-top:16px; font-size:15.5px; color:var(--slate); max-width:62ch; line-height:1.6; }
  section.block.on-dark .intro{ color:var(--mist); }

  section.block.on-dark{ background:var(--ink); }

  /* graph-paper texture, consistent across every section, light and dark variants */
  section.block::before{
    content:"";
    position:absolute; inset:0;
    background-image:
      linear-gradient(rgba(11,31,58,0.035) 1px, transparent 1px),
      linear-gradient(90deg, rgba(11,31,58,0.035) 1px, transparent 1px);
    background-size:42px 42px;
    z-index:0; pointer-events:none;
  }
  section.block.on-dark::before{
    background-image:
      linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px);
  }

  /* decorative circuit-motif background graphics: quiet, low-opacity, purely atmospheric */
  .deco{ position:absolute; z-index:1; pointer-events:none; color:var(--current); opacity:0.09; }
  section.block.on-dark .deco{ color:var(--current); opacity:0.1; }
  section.block:not(.on-dark) .deco{ color:var(--ink); opacity:0.05; }
  .deco.amber{ color:var(--amber); }

  /* the spine and its current-glow render above section fills so they read continuously down the page */
  .rail{ isolation:isolate; }
  .rail::before, .rail-progress{ z-index:4; }
  section.block{ z-index:2; }
  section.block.on-dark::after{
    content:"";
    position:absolute; left:calc(var(--gutter) - 1px); top:0; bottom:0; width:2px;
    background:rgba(255,255,255,0.12); z-index:1;
  }

  /* ---------- problem list ---------- */
  .problem-list{ margin-top:34px; display:grid; grid-template-columns:repeat(2,1fr); gap:22px 40px; max-width:920px; }
  .problem-item{ padding-top:16px; border-top:1px solid var(--paper-line); }
  .problem-item h3{ font-size:16px; font-weight:600; color:var(--ink); margin-bottom:6px; }
  .problem-item p{ font-size:14px; color:var(--slate); line-height:1.55; }

  /* ---------- product diagram ---------- */
  .diagram{ margin-top:40px; display:grid; grid-template-columns:1fr 1fr; gap:48px; align-items:center; }
  .engine-stack{ display:flex; flex-direction:column; gap:12px; }
  .estack-box{
    background:rgba(255,255,255,0.04); border:1px solid rgba(255,255,255,0.12);
    border-radius:4px; padding:16px 18px; display:flex; align-items:center; gap:14px;
  }
  .estack-box svg{ width:26px; height:26px; color:var(--current); flex:0 0 auto; }
  .estack-box .n{ font-family:var(--serif); font-size:16.5px; color:#fff; }
  .estack-box .d{ font-size:12.5px; color:var(--slate-light); margin-top:2px; }
  .flow-arrow{ display:flex; justify-content:center; margin:2px 0; }
  .flow-arrow svg{ width:18px; height:18px; color:var(--amber); }
  .result-box{
    background:var(--amber); color:#241300; border-radius:4px; padding:16px 18px;
    display:flex; align-items:center; gap:14px;
  }
  .result-box svg{ width:26px; height:26px; }
  .result-box .n{ font-family:var(--serif); font-size:16px; font-weight:600; }
  .diagram-copy ul{ display:flex; flex-direction:column; gap:16px; }
  .diagram-copy li{ display:flex; gap:12px; align-items:flex-start; }
  .diagram-copy li svg{ width:18px; height:18px; color:var(--current); flex:0 0 auto; margin-top:2px; }
  .diagram-copy li span{ font-size:14.5px; color:var(--mist); line-height:1.5; }

  /* ---------- workflow steps ---------- */
  .steps{ margin-top:44px; display:grid; grid-template-columns:repeat(4,1fr); gap:0; }
  .step{ position:relative; padding:0 22px 0 0; border-left:1px solid var(--paper-line); padding-left:22px; }
  .step:first-child{ border-left:none; padding-left:0; }
  .step .num{ font-family:var(--serif); font-size:13px; color:var(--slate-light); margin-bottom:10px; }
  .step h3{ font-size:16px; font-weight:600; color:var(--ink); margin-bottom:8px; }
  .step p{ font-size:13.5px; color:var(--slate); line-height:1.55; }
  section.block.on-dark .step{ border-left-color:rgba(255,255,255,0.14); }
  section.block.on-dark .step h3{ color:#fff; }
  section.block.on-dark .step p{ color:var(--mist); }
  section.block.on-dark .step .num{ color:var(--slate-light); }

  /* ---------- tiers ---------- */
  .tiers{ margin-top:40px; display:grid; grid-template-columns:repeat(3,1fr); gap:22px; }
  .tier{ background:var(--card); border:1px solid var(--paper-line); border-radius:6px; padding:26px; }
  .tier.ai{ background:var(--ink-2); border-color:rgba(18,182,201,0.4); box-shadow:0 0 0 1px rgba(18,182,201,0.12) inset; }
  .tier .tag{ display:inline-block; font-size:11px; font-weight:600; color:var(--slate); background:var(--paper); padding:4px 10px; border-radius:3px; margin-bottom:16px; }
  .tier.ai .tag{ color:var(--void); background:var(--amber); }
  .tier h3{ font-size:19px; color:var(--ink); margin-bottom:10px; }
  .tier.ai h3{ color:#fff; }
  .tier p{ font-size:14px; color:var(--slate); line-height:1.6; }
  .tier.ai p{ color:var(--mist); }

  /* ---------- coverage ---------- */
  .region-row{ margin-top:34px; display:flex; flex-wrap:wrap; gap:10px; }
  .region-chip{ font-size:13.5px; color:var(--mist); background:rgba(255,255,255,0.05); border:1px solid rgba(255,255,255,0.14); padding:9px 16px; border-radius:20px; }

  /* ---------- roadmap wings ---------- */
  .wings{ margin-top:40px; display:grid; grid-template-columns:1fr 1fr; gap:24px; }
  .wing{ border:1px solid var(--paper-line); border-radius:6px; padding:28px; background:var(--card); }
  .wing-head{ display:flex; align-items:center; gap:14px; margin-bottom:16px; }
  .wing-icon{ width:44px; height:44px; border-radius:50%; display:flex; align-items:center; justify-content:center; flex:0 0 auto; }
  .wing-icon svg{ width:22px; height:22px; }
  .wing.emt .wing-icon{ background:rgba(242,169,59,0.14); }
  .wing.emt .wing-icon svg{ color:var(--amber-deep); }
  .wing.ps .wing-icon{ background:rgba(18,182,201,0.14); }
  .wing.ps .wing-icon svg{ color:var(--current-deep); }
  .wing h3{ font-size:19px; color:var(--ink); }
  .wing .sub{ font-size:12.5px; color:var(--slate); margin-top:2px; }
  .wing p.body{ font-size:14px; color:var(--slate); line-height:1.6; margin-bottom:16px; }
  .wing .goal{ border-top:1px solid var(--paper-line); padding-top:14px; font-size:13px; color:var(--ink); }
  .wing .goal b{ display:block; font-size:11px; color:var(--slate-light); font-weight:600; margin-bottom:4px; }

  /* ---------- capabilities ---------- */
  .cap-groups{ margin-top:40px; display:grid; grid-template-columns:repeat(4,1fr); gap:22px; }
  .cap-group h3{ font-size:15px; color:#fff; margin-bottom:14px; line-height:1.3; }
  .cap-group ul{ display:flex; flex-direction:column; gap:9px; }
  .cap-group li{ font-size:13.5px; color:var(--mist); padding-left:14px; position:relative; }
  .cap-group li::before{ content:""; position:absolute; left:0; top:7px; width:5px; height:5px; background:var(--amber); }

  /* ---------- track record ---------- */
  .stat-row{ margin-top:8px; display:grid; grid-template-columns:repeat(3,1fr); gap:24px; padding-bottom:44px; border-bottom:1px solid var(--paper-line); }
  .stat-row.four-col{ grid-template-columns:repeat(4,1fr); }
  .stat h3{ font-family:var(--serif); font-size:30px; color:var(--ink); }
  .stat p{ font-size:13px; color:var(--slate); margin-top:6px; line-height:1.45; }
  .work-list{ margin-top:40px; display:grid; grid-template-columns:1fr 1fr; gap:0 48px; }
  .work-item{ padding:20px 0; border-top:1px solid var(--paper-line); }
  .work-item h3{ font-size:15.5px; font-weight:600; color:var(--ink); margin-bottom:6px; }
  .work-item p{ font-size:13.5px; color:var(--slate); line-height:1.55; }

  /* ---------- cta ---------- */
  .cta-section{ padding-bottom:110px; }
  .cta-grid{ margin-top:40px; display:grid; grid-template-columns:1fr 1fr; gap:56px; }
  .cta-grid form{ display:flex; flex-direction:column; gap:14px; }
  .cta-grid input, .cta-grid textarea{
    width:100%; background:rgba(255,255,255,0.04); border:1px solid rgba(255,255,255,0.18);
    border-radius:4px; padding:12px 14px; color:#fff; font-family:inherit; font-size:14px;
  }
  .cta-grid input::placeholder, .cta-grid textarea::placeholder{ color:var(--slate-light); }
  .cta-grid textarea{ resize:vertical; min-height:96px; }
  .cta-side ul{ display:flex; flex-direction:column; gap:14px; margin-top:8px; }
  .cta-side li{ display:flex; gap:10px; font-size:14px; color:var(--mist); align-items:flex-start; }
  .cta-side li svg{ width:16px; height:16px; color:var(--current); margin-top:3px; flex:0 0 auto; }

  /* ---------- footer ---------- */
  footer{ background:var(--void); border-top:1px solid rgba(255,255,255,0.08); padding:64px 0 32px; }
  .footer-grid{ display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:32px; padding-bottom:40px; border-bottom:1px solid rgba(255,255,255,0.08); }
  .footer-grid .fbrand{ display:flex; align-items:center; gap:10px; margin-bottom:14px; }
  .footer-grid .fbrand span{ font-family:var(--serif); font-size:17px; color:#fff; }
  .footer-grid .fbrand small{ display:block; font-size:11px; color:var(--slate-light); margin-top:1px; }
  .footer-grid p.ftag{ font-size:13px; color:var(--slate-light); line-height:1.55; max-width:34ch; }
  .footer-col h4{ font-size:12px; color:var(--slate-light); font-weight:600; text-transform:uppercase; letter-spacing:0.06em; margin-bottom:16px; }
  .footer-col ul{ display:flex; flex-direction:column; gap:11px; }
  .footer-col a{ font-size:13.5px; color:var(--mist); }
  .footer-col a:hover{ color:#fff; }
  .footer-bottom{ display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:12px; padding-top:24px; }
  .footer-bottom .fmeta{ font-size:12.5px; color:var(--slate-light); }
  .footer-bottom .flinks{ display:flex; gap:20px; }
  .footer-bottom .flinks a{ font-size:12.5px; color:var(--slate-light); }
  .footer-bottom .flinks a:hover{ color:var(--mist); }

  /* ---------- interior page hero (About, Careers, Training, Publications, VoltisOps) ---------- */
  .page-hero{
    background:
      radial-gradient(ellipse 900px 500px at 12% -10%, rgba(18,182,201,0.16), transparent 60%),
      var(--void);
    position:relative; overflow:hidden; padding:80px 0 68px;
  }
  .page-hero::before{
    content:"";
    position:absolute; inset:0;
    background-image:
      linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px);
    background-size:42px 42px;
    mask-image:linear-gradient(to bottom, black, transparent 85%);
    pointer-events:none;
  }
  .page-hero .wrap{ position:relative; }
  .page-hero .kicker{ color:var(--current); }
  .page-hero h1{ font-size:clamp(30px,4vw,46px); color:#fff; max-width:18ch; line-height:1.12; }
  .page-hero p.lede{ margin-top:18px; font-size:16px; line-height:1.6; color:var(--mist); max-width:56ch; }

  /* ---------- product cards (homepage) ---------- */
  .product-cards{ margin-top:40px; display:grid; grid-template-columns:1fr 1fr; gap:24px; }
  .product-card{
    display:block; border-radius:8px; padding:32px; border:1px solid rgba(255,255,255,0.12);
    background:linear-gradient(180deg, rgba(255,255,255,0.045), rgba(255,255,255,0.015));
    transition:border-color .15s ease, transform .15s ease;
  }
  .product-card:hover{ border-color:rgba(18,182,201,0.5); transform:translateY(-2px); }
  .product-card .tag{ display:inline-block; font-size:11px; font-weight:600; color:var(--void); background:var(--current); padding:4px 10px; border-radius:3px; margin-bottom:18px; }
  .product-card h3{ font-size:22px; color:#fff; margin-bottom:10px; }
  .product-card p{ font-size:14px; color:var(--mist); line-height:1.6; margin-bottom:20px; }
  .product-card .go{ display:inline-flex; align-items:center; gap:8px; font-size:13.5px; font-weight:600; color:var(--current); }
  .product-card .go svg{ width:14px; height:14px; transition:transform .15s ease; }
  .product-card:hover .go svg{ transform:translateX(3px); }

  /* ---------- flashcard / training cards ---------- */
  .exam-cards{ margin-top:40px; display:grid; grid-template-columns:repeat(3,1fr); gap:22px; }
  .exam-card{ background:var(--card); border:1px solid var(--paper-line); border-radius:6px; padding:28px; }
  .exam-card .badge{ display:inline-flex; align-items:center; justify-content:center; width:52px; height:52px; border-radius:50%; background:var(--ink); color:var(--current); font-family:var(--serif); font-weight:700; font-size:15px; margin-bottom:18px; }
  .exam-card h3{ font-size:19px; color:var(--ink); margin-bottom:8px; }
  .exam-card p{ font-size:13.5px; color:var(--slate); line-height:1.6; margin-bottom:16px; }
  .exam-card ul{ display:flex; flex-direction:column; gap:8px; margin-bottom:20px; }
  .exam-card li{ font-size:12.5px; color:var(--slate); padding-left:14px; position:relative; }
  .exam-card li::before{ content:""; position:absolute; left:0; top:6px; width:5px; height:5px; background:var(--current-deep); }
  .exam-card .btn{ width:100%; }

  /* ---------- publications ---------- */
  .pub-list{ margin-top:36px; display:flex; flex-direction:column; }
  .pub{ display:flex; justify-content:space-between; gap:24px; padding:16px 0; border-top:1px solid var(--paper-line); }
  .pub:last-child{ border-bottom:1px solid var(--paper-line); }
  .pub .t{ font-size:14.5px; color:var(--ink); line-height:1.45; max-width:70ch; }
  .pub .y{ font-family:var(--serif); font-size:14px; color:var(--slate-light); flex:0 0 auto; }
  .pub-note{ margin-top:18px; font-size:12.5px; color:var(--slate); font-style:italic; }
  section.block.on-dark .pub .t{ color:var(--mist); }
  section.block.on-dark .pub-note{ color:var(--slate-light); }

  /* ---------- simple content (About / Careers text blocks) ---------- */
  .lead-block{ margin-top:34px; max-width:760px; }
  .lead-block p{ font-size:15.5px; color:var(--slate); line-height:1.7; margin-bottom:18px; }
  section.block.on-dark .lead-block p{ color:var(--mist); }
  .value-grid{ margin-top:40px; display:grid; grid-template-columns:repeat(3,1fr); gap:22px; }
  .value-item h3{ font-size:16px; color:var(--ink); margin-bottom:8px; }
  section.block.on-dark .value-item h3{ color:#fff; }
  .value-item p{ font-size:13.5px; color:var(--slate); line-height:1.55; }
  section.block.on-dark .value-item p{ color:var(--mist); }
  .role-card{ margin-top:16px; border:1px solid var(--paper-line); border-radius:6px; padding:24px 28px; display:flex; justify-content:space-between; align-items:center; gap:20px; flex-wrap:wrap; }
  .role-card h3{ font-size:16px; color:var(--ink); margin-bottom:4px; }
  .role-card p{ font-size:13px; color:var(--slate); }

  /* ---------- responsive additions ---------- */
  @media (max-width:960px){
    .footer-grid{ grid-template-columns:1fr 1fr; row-gap:32px; }
    .product-cards{ grid-template-columns:1fr; }
    .exam-cards{ grid-template-columns:1fr; }
    .value-grid{ grid-template-columns:1fr; }
  }
  @media (max-width:600px){
    .footer-grid{ grid-template-columns:1fr; }
  }

  /* ---------- responsive ---------- */
  @media (max-width:960px){
    :root{ --gutter:28px; }
    .nav-links{ display:none; }
    .menu-toggle{ display:block; }
    .hero .wrap{ grid-template-columns:1fr; }
    .panel{ margin-top:8px; }
    .problem-list{ grid-template-columns:1fr; }
    .diagram{ grid-template-columns:1fr; gap:28px; }
    .steps{ grid-template-columns:1fr 1fr; row-gap:28px; }
    .step{ border-left:none; padding-left:0; }
    .tiers{ grid-template-columns:1fr; }
    .wings{ grid-template-columns:1fr; }
    .cap-groups{ grid-template-columns:1fr 1fr; row-gap:28px; }
    .stat-row{ grid-template-columns:1fr 1fr; row-gap:24px; }
    .stat-row.four-col{ grid-template-columns:1fr 1fr; }
    .work-list{ grid-template-columns:1fr; }
    .cta-grid{ grid-template-columns:1fr; }
    section.block{ padding-left:calc(var(--gutter) + 26px); }
  }
  @media (max-width:600px){
    .wrap{ padding:0 20px; }
    .steps{ grid-template-columns:1fr; }
    .cap-groups{ grid-template-columns:1fr; }
    .stat-row{ grid-template-columns:1fr 1fr; }
    .hero-actions{ flex-direction:column; align-items:flex-start; }
    .pub{ flex-direction:column; gap:4px; }
  }

  /* ---------- mobile menu ---------- */
  .mobile-menu{
    display:none; position:fixed; inset:72px 0 0 0; background:var(--void); z-index:99;
    padding:28px 24px; flex-direction:column; gap:22px;
  }
  .mobile-menu.open{ display:flex; }
  .mobile-menu a{ font-size:18px; color:#fff; font-family:var(--serif); }
  .mobile-menu .btn{ align-self:flex-start; }
  .mobile-menu .sub-label{ font-size:11px; color:var(--slate-light); text-transform:uppercase; letter-spacing:0.06em; margin-top:6px; }

  /* ---------- wide nav dropdown (Services) ---------- */
  .nav-drop-menu.wide{ min-width:460px; display:grid; grid-template-columns:1fr 1fr; gap:2px; }

  /* ---------- hero capability panel (consulting homepage) ---------- */
  .cap-panel{
    background:linear-gradient(180deg, rgba(255,255,255,0.045), rgba(255,255,255,0.02));
    border:1px solid rgba(255,255,255,0.12);
    border-radius:6px;
    padding:26px;
  }
  .cap-panel .t{ font-size:12.5px; color:var(--slate-light); margin-bottom:18px; }
  .cap-panel ul{ display:flex; flex-direction:column; gap:14px; }
  .cap-panel li{ display:flex; align-items:center; gap:12px; padding:12px 14px; background:rgba(255,255,255,0.04); border:1px solid rgba(255,255,255,0.08); border-radius:4px; }
  .cap-panel li svg{ width:18px; height:18px; color:var(--current); flex:0 0 auto; }
  .cap-panel li span{ font-size:14px; color:#fff; }
  .cap-panel .foot{ margin-top:16px; padding-top:16px; border-top:1px solid rgba(255,255,255,0.1); font-size:12px; color:var(--slate-light); }
  .cap-panel .foot b{ color:var(--current); font-weight:600; }

  /* ---------- lifecycle / services phases ---------- */
  .lifecycle{ margin-top:40px; display:grid; grid-template-columns:repeat(4,1fr); gap:0; border-top:1px solid rgba(255,255,255,0.12); }
  .phase{ padding:26px 22px 0; border-right:1px solid rgba(255,255,255,0.12); position:relative; }
  .phase:last-child{ border-right:none; }
  .phase::before{ content:""; position:absolute; top:-1px; left:0; width:38px; height:2px; background:var(--current); }
  .phase h3{ font-size:15.5px; color:#fff; margin-bottom:12px; line-height:1.3; }
  .phase ul{ display:flex; flex-direction:column; gap:8px; }
  .phase li{ font-size:12.5px; color:var(--mist); padding-left:13px; position:relative; line-height:1.4; }
  .phase li::before{ content:""; position:absolute; left:0; top:6px; width:4px; height:4px; background:var(--amber); }

  /* ---------- case study preview cards ---------- */
  .case-cards{ margin-top:40px; display:grid; grid-template-columns:repeat(3,1fr); gap:22px; }
  .case-card{ display:flex; flex-direction:column; background:var(--card); border:1px solid var(--paper-line); border-radius:6px; padding:26px; transition:border-color .15s ease, transform .15s ease; }
  .case-card:hover{ border-color:var(--current-deep); transform:translateY(-2px); }
  .case-card .sector{ display:inline-block; font-size:10.5px; font-weight:600; color:var(--current-deep); text-transform:uppercase; letter-spacing:0.05em; margin-bottom:12px; }
  .case-card h3{ font-size:16.5px; color:var(--ink); margin-bottom:10px; line-height:1.3; }
  .case-card p{ font-size:13.5px; color:var(--slate); line-height:1.6; margin-bottom:18px; flex:1; }
  .case-card .go{ display:inline-flex; align-items:center; gap:7px; font-size:13px; font-weight:600; color:var(--current-deep); }
  .case-card .go svg{ width:13px; height:13px; transition:transform .15s ease; }
  .case-card:hover .go svg{ transform:translateX(3px); }

  /* ---------- insight / publication preview cards ---------- */
  .insight-cards{ margin-top:36px; display:grid; grid-template-columns:repeat(3,1fr); gap:22px; }
  .insight-card{ padding-top:18px; border-top:2px solid rgba(255,255,255,0.14); }
  .insight-card .y{ font-family:var(--serif); font-size:12.5px; color:var(--current); margin-bottom:10px; display:block; }
  .insight-card h3{ font-size:15px; color:#fff; line-height:1.4; margin-bottom:10px; }
  .insight-card p{ font-size:12.5px; color:var(--mist); line-height:1.5; }

  /* ---------- full case study detail (case-studies.html) ---------- */
  .case-detail{ border-top:1px solid var(--paper-line); padding:44px 0; }
  .case-detail:first-of-type{ border-top:none; padding-top:0; }
  .case-detail .sector{ display:inline-block; font-size:11px; font-weight:600; color:var(--current-deep); text-transform:uppercase; letter-spacing:0.05em; margin-bottom:12px; }
  .case-detail h2{ font-size:24px; color:var(--ink); margin-bottom:18px; max-width:none; }
  .case-grid{ display:grid; grid-template-columns:1fr 2fr; gap:36px; }
  .case-grid .meta{ display:flex; flex-direction:column; gap:18px; }
  .case-meta-item .k{ font-size:11px; color:var(--slate-light); text-transform:uppercase; letter-spacing:0.05em; font-weight:600; margin-bottom:4px; }
  .case-meta-item .v{ font-size:13.5px; color:var(--ink); line-height:1.4; }
  .case-grid .body p{ font-size:14.5px; color:var(--slate); line-height:1.7; margin-bottom:16px; }
  .case-grid .body h4{ font-family:var(--sans); font-size:12px; color:var(--slate-light); text-transform:uppercase; letter-spacing:0.05em; font-weight:600; margin:20px 0 8px; }

  @media (max-width:960px){
    .lifecycle{ grid-template-columns:1fr 1fr; }
    .phase{ border-right:none; border-bottom:1px solid rgba(255,255,255,0.12); padding-bottom:22px; margin-bottom:22px; }
    .case-cards{ grid-template-columns:1fr; }
    .insight-cards{ grid-template-columns:1fr; }
    .case-grid{ grid-template-columns:1fr; }
    .nav-drop-menu.wide{ min-width:320px; grid-template-columns:1fr; }
  }

  /* ---------- interactive flashcards ---------- */
  .flashcard-app{ max-width:560px; margin-top:36px; }
  .deck-tabs{ display:flex; gap:8px; margin-bottom:20px; }
  .deck-tab{
    flex:1; padding:12px 10px; border-radius:5px; border:1px solid var(--paper-line);
    background:var(--card); color:var(--slate); font-family:var(--serif); font-size:15px;
    font-weight:600; cursor:pointer; transition:all .15s ease;
  }
  .deck-tab:hover{ border-color:var(--current-deep); color:var(--ink); }
  .deck-tab.active{ background:var(--current); border-color:var(--current); color:var(--void); }
  section.block.on-dark .deck-tab{ background:rgba(255,255,255,0.03); border-color:rgba(255,255,255,0.18); color:var(--mist); }
  section.block.on-dark .deck-tab:hover{ border-color:rgba(255,255,255,0.4); color:#fff; }
  .deck-card{ perspective:1400px; height:230px; cursor:pointer; }
  .deck-card-inner{ position:relative; width:100%; height:100%; transition:transform .5s cubic-bezier(.4,.2,.2,1); transform-style:preserve-3d; }
  .deck-card.flipped .deck-card-inner{ transform:rotateY(180deg); }
  .deck-face{
    position:absolute; inset:0; backface-visibility:hidden; border-radius:8px; padding:30px;
    display:flex; flex-direction:column; justify-content:center; box-shadow:0 12px 28px rgba(0,0,0,0.25);
  }
  .deck-front{ background:var(--ink-2); border:1px solid rgba(255,255,255,0.12); color:#fff; }
  .deck-back{ background:var(--current); color:var(--void); transform:rotateY(180deg); }
  .deck-tag{ font-size:11px; text-transform:uppercase; letter-spacing:0.06em; opacity:0.65; margin-bottom:14px; font-weight:600; }
  .deck-face p{ font-size:17px; line-height:1.45; font-family:var(--serif); }
  .deck-controls{ display:flex; align-items:center; justify-content:space-between; margin-top:18px; gap:12px; }
  .deck-actions{ display:flex; align-items:center; justify-content:center; margin-top:10px; gap:10px; }
  .deck-btn{
    background:transparent; border:1px solid var(--paper-line); color:var(--slate);
    padding:9px 16px; border-radius:4px; font-size:13px; cursor:pointer; transition:all .15s ease;
  }
  .deck-btn:hover{ border-color:var(--current-deep); color:var(--ink); }
  .deck-count{ font-size:12.5px; color:var(--slate); }
  .deck-hint{ margin-top:12px; font-size:12px; color:var(--slate); text-align:center; }
  section.block.on-dark .deck-btn{ border-color:rgba(255,255,255,0.22); color:var(--mist); }
  section.block.on-dark .deck-btn:hover{ border-color:#fff; color:#fff; }
  section.block.on-dark .deck-count{ color:var(--slate-light); }
  section.block.on-dark .deck-hint{ color:var(--slate-light); }
  .free-badge{ display:inline-flex; align-items:center; gap:6px; font-size:11.5px; font-weight:600; color:var(--void); background:var(--amber); padding:5px 12px; border-radius:20px; margin-bottom:16px; }