:root{
    --bg:#15171F;
    --card:#1C1F29;
    --card-2:#20242F;
    --ink:#EDEAE3;
    --muted:#9AA0AE;
    --line:#2B303E;
    --accent:#9F8FFF;
    --accent-deep:#7B68E8;
    --accent-soft:rgba(159,143,255,.14);
    --amber:#E0A458;
    --green:#4ADE80;
    --max:1200px;
  }
  *{margin:0;padding:0;box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    background:var(--bg);
    color:var(--ink);
    font-family:'Archivo',sans-serif;
    font-size:17px;
    line-height:1.6;
    -webkit-font-smoothing:antialiased;
  }
  ::selection{background:var(--accent);color:#15171F;}
  a{color:inherit;}
  a:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:2px;}

  .wrap{max-width:var(--max);margin:0 auto;padding:0 32px;}
  @media(max-width:600px){.wrap{padding:0 18px;}}

  /* ---------- nav ---------- */
  header{
    position:sticky;top:0;z-index:50;
    background:rgba(21,23,31,.85);
    backdrop-filter:blur(10px);
    border-bottom:1px solid var(--line);
  }
  .nav{display:flex;align-items:center;justify-content:space-between;height:62px;}
  .nav-name{font-family:'IBM Plex Mono',monospace;font-size:14px;font-weight:500;text-decoration:none;letter-spacing:.02em;}
  .nav-name span{color:var(--accent);}
  .nav-links{display:flex;gap:26px;align-items:center;list-style:none;}
  .nav-links a{font-family:'IBM Plex Mono',monospace;font-size:13px;text-decoration:none;color:var(--muted);transition:color .15s;}
  .nav-links a:hover{color:var(--ink);}
  .nav-cta{
    font-family:'IBM Plex Mono',monospace;font-size:13px;font-weight:500;
    background:var(--accent);color:#15171F !important;text-decoration:none;
    padding:9px 15px;border-radius:7px;transition:background .15s;
  }
  .nav-cta:hover{background:#B7ABFF;}
  @media(max-width:720px){.nav-links li:not(:last-child){display:none;}}

  /* ---------- eyebrows ---------- */
  .eyebrow{
    font-family:'IBM Plex Mono',monospace;font-size:12.5px;font-weight:500;
    color:var(--accent);letter-spacing:.04em;
    display:inline-flex;align-items:center;gap:8px;margin-bottom:18px;
  }
  .eyebrow::before{content:"";width:22px;height:1px;background:var(--accent);}

  /* ---------- hero ---------- */
  .hero{padding:80px 0 68px;}
  .hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:52px;align-items:center;}
  .badge{
    display:inline-flex;align-items:center;gap:8px;
    font-family:'IBM Plex Mono',monospace;font-size:12.5px;color:var(--muted);
    border:1px solid var(--line);background:var(--card);
    padding:7px 13px;border-radius:99px;margin-bottom:26px;
  }
  .badge .dot{width:7px;height:7px;border-radius:50%;background:var(--green);}
  h1{
    font-family:'Newsreader',serif;font-weight:500;
    font-size:clamp(36px,5.4vw,58px);line-height:1.08;letter-spacing:-.015em;
    margin-bottom:22px;
  }
  h1 em{font-style:italic;color:var(--accent);}
  .hero-sub{font-size:18px;color:var(--muted);max-width:34em;margin-bottom:32px;}
  .hero-ctas{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:42px;}
  .btn{
    font-family:'Archivo',sans-serif;font-weight:600;font-size:15.5px;
    padding:13px 22px;border-radius:8px;text-decoration:none;transition:all .15s;
    display:inline-block;
  }
  .btn-primary{background:var(--accent);color:#15171F;}
  .btn-primary:hover{background:#B7ABFF;transform:translateY(-1px);}
  .btn-ghost{border:1px solid var(--line);background:var(--card);color:var(--ink);}
  .btn-ghost:hover{border-color:var(--accent);}
  .proof{border-top:1px solid var(--line);padding-top:22px;}
  .proof-label{font-family:'IBM Plex Mono',monospace;font-size:11.5px;color:var(--muted);margin-bottom:12px;letter-spacing:.05em;}
  .proof-logos{display:flex;gap:24px;flex-wrap:wrap;font-family:'IBM Plex Mono',monospace;font-size:14px;font-weight:500;}
  .proof-logos span{opacity:.8;}

  /* ---------- lineage diagram ---------- */
  .lineage{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:24px 20px;}
  .lineage-title{font-family:'IBM Plex Mono',monospace;font-size:12px;color:var(--muted);margin-bottom:14px;}
  .lineage svg{width:100%;height:auto;display:block;}
  .l-chip{fill:var(--card-2);stroke:var(--line);}
  .l-chip-hl{fill:var(--accent-soft);stroke:var(--accent-deep);}
  .l-chip-final{fill:var(--accent);stroke:var(--accent);}
  .l-text{font-family:'IBM Plex Mono',monospace;font-size:10.5px;fill:var(--ink);}
  .l-text-hl{fill:var(--accent);font-weight:500;}
  .l-text-final{fill:#15171F;font-weight:500;}
  .l-edge{stroke:var(--muted);stroke-width:1.1;fill:none;opacity:.5;}
  @media(prefers-reduced-motion:no-preference){
    .l-edge{stroke-dasharray:200;stroke-dashoffset:200;animation:draw 1.1s ease forwards;}
    .l-edge:nth-of-type(2){animation-delay:.15s;}
    .l-edge:nth-of-type(3){animation-delay:.3s;}
    @keyframes draw{to{stroke-dashoffset:0;}}
  }

  /* ---------- sections ---------- */
  section{padding:72px 0;border-top:1px solid var(--line);}
  h2{
    font-family:'Newsreader',serif;font-weight:500;
    font-size:clamp(27px,3.4vw,38px);letter-spacing:-.01em;line-height:1.15;
    margin-bottom:14px;max-width:20em;
  }
  .section-sub{color:var(--muted);max-width:38em;margin-bottom:42px;font-size:16.5px;}

  /* services */
  .svc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
  .svc{
    background:var(--card);border:1px solid var(--line);border-radius:14px;
    padding:26px 22px;display:flex;flex-direction:column;transition:border-color .15s, transform .15s;
  }
  .svc:hover{border-color:var(--accent-deep);transform:translateY(-2px);}
  .svc-tag{font-family:'IBM Plex Mono',monospace;font-size:11.5px;color:var(--accent);margin-bottom:14px;}
  .svc h3{font-weight:600;font-size:19px;margin-bottom:10px;letter-spacing:-.01em;}
  .svc p{font-size:15px;color:var(--muted);margin-bottom:18px;}
  .svc ul{list-style:none;margin-top:auto;border-top:1px dashed var(--line);padding-top:16px;}
  .svc li{font-size:14px;padding-left:20px;position:relative;margin-bottom:8px;}
  .svc li::before{content:"→";position:absolute;left:0;color:var(--accent);font-family:'IBM Plex Mono',monospace;font-size:12px;}

  /* case studies */
  .case{
    background:var(--card);border:1px solid var(--line);border-radius:14px;
    padding:32px 28px;margin-bottom:16px;
    display:grid;grid-template-columns:1fr 250px;gap:34px;
  }
  .case-org{font-family:'IBM Plex Mono',monospace;font-size:12.5px;color:var(--muted);margin-bottom:10px;}
  .case-org b{color:var(--ink);font-weight:500;}
  .case h3{font-family:'Newsreader',serif;font-weight:500;font-size:23px;line-height:1.22;letter-spacing:-.01em;margin-bottom:12px;}
  .case p{font-size:15.5px;color:var(--muted);max-width:36em;}
  .case p + p{margin-top:10px;}
  .outcomes{display:flex;flex-direction:column;gap:14px;border-left:1px solid var(--line);padding-left:26px;justify-content:center;}
  .outcome-dir{font-family:'IBM Plex Mono',monospace;font-size:14px;font-weight:500;color:var(--accent);line-height:1;}
  .outcome-dir.amber{color:var(--amber);}
  .outcome-label{font-size:13.5px;color:var(--muted);margin-top:5px;line-height:1.45;}
  .nda{font-family:'IBM Plex Mono',monospace;font-size:11px;color:var(--muted);opacity:.7;margin-top:4px;}

  /* lab / interactive viz */
  .viz-shell{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:24px;position:relative;}
  .viz-head{display:flex;justify-content:space-between;align-items:baseline;gap:16px;flex-wrap:wrap;margin-bottom:6px;}
  .viz-title{font-weight:600;font-size:17px;}
  .viz-note{font-family:'IBM Plex Mono',monospace;font-size:11.5px;color:var(--muted);}
  .legend{display:flex;gap:16px;flex-wrap:wrap;margin:12px 0 6px;}
  .legend span{font-family:'IBM Plex Mono',monospace;font-size:12px;color:var(--muted);display:inline-flex;align-items:center;gap:7px;}
  .legend i{width:9px;height:9px;border-radius:50%;display:inline-block;}
  .legend .ring i{background:transparent;border:1.5px solid var(--ink);}
  #vizWrap{position:relative;}
  #viz{width:100%;height:420px;display:block;cursor:crosshair;}
  #tip{
    position:absolute;pointer-events:none;display:none;z-index:5;
    background:#0F1117;border:1px solid var(--line);border-radius:9px;
    padding:10px 12px;font-size:13px;line-height:1.5;max-width:230px;
    box-shadow:0 10px 28px rgba(0,0,0,.45);
  }
  #tip .t-title{font-weight:600;}
  #tip .t-meta{font-family:'IBM Plex Mono',monospace;font-size:11.5px;color:var(--muted);}
  #tip .t-bridge{font-family:'IBM Plex Mono',monospace;font-size:11.5px;color:var(--amber);margin-top:3px;}
  .viz-caption{font-size:14.5px;color:var(--muted);margin-top:16px;max-width:44em;}
  .viz-caption b{color:var(--ink);font-weight:600;}

  /* research cards */
  .res-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:18px;}
  .res{border:1px dashed var(--line);border-radius:14px;padding:22px;}
  .res-tag{font-family:'IBM Plex Mono',monospace;font-size:11.5px;color:var(--muted);margin-bottom:10px;}
  .res h3{font-size:16.5px;font-weight:600;margin-bottom:8px;}
  .res p{font-size:14.5px;color:var(--muted);margin-bottom:10px;}
  .res a{color:var(--accent);font-weight:500;text-decoration:none;font-size:13.5px;font-family:'IBM Plex Mono',monospace;}
  .res a:hover{text-decoration:underline;}

  /* about */
  .about-grid{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:start;}
  .about p{font-size:16.5px;margin-bottom:16px;max-width:34em;}
  .about .aside{color:var(--muted);}
  .about .music{color:var(--amber);font-style:italic;font-family:'Newsreader',serif;font-size:17.5px;}
  .facts{list-style:none;border:1px solid var(--line);border-radius:14px;background:var(--card);overflow:hidden;}
  .facts li{
    display:flex;justify-content:space-between;gap:16px;
    padding:14px 18px;font-size:14.5px;border-bottom:1px solid var(--line);
  }
  .facts li:last-child{border-bottom:none;}
  .facts .k{font-family:'IBM Plex Mono',monospace;font-size:12.5px;color:var(--muted);}
  .facts .v{font-weight:500;text-align:right;}

  /* contact */
  .contact{padding-bottom:92px;}
  .contact h2{max-width:17em;}
  .contact-row{display:flex;gap:14px;flex-wrap:wrap;margin-top:32px;}
  .contact-links{margin-top:28px;display:flex;gap:22px;font-family:'IBM Plex Mono',monospace;font-size:13.5px;}
  .contact-links a{color:var(--muted);text-decoration:none;}
  .contact-links a:hover{color:var(--accent);}

  footer{border-top:1px solid var(--line);padding:24px 0 34px;}
  .foot{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
    font-family:'IBM Plex Mono',monospace;font-size:12px;color:var(--muted);}

  /* ---------- mobile ---------- */
  @media(max-width:880px){
    .hero{padding:52px 0 52px;}
    .hero-grid{grid-template-columns:1fr;gap:36px;}
    .svc-grid{grid-template-columns:1fr;}
    .about-grid{grid-template-columns:1fr;gap:26px;}
    section{padding:56px 0;}
    #viz{height:340px;}
  }
  @media(max-width:820px){
    .case{grid-template-columns:1fr;gap:20px;padding:24px 20px;}
    .outcomes{border-left:none;padding-left:0;border-top:1px dashed var(--line);padding-top:16px;
      flex-direction:row;flex-wrap:wrap;gap:20px;}
    .res-grid{grid-template-columns:1fr;}
  }