:root{
    --paper:#FBFAF7;
    --ink:#14161B;
    --muted:#5C6068;
    --line:#E7E5DC;
    --line-2:#CFCDC2;
    --blue:#3D5A80;
    --blue-wash:#EEF1F5;
    --water:#F2F5F7;
    --green:#0E7A4E;
    --green-wash:#E7F4EE;
    --amber:#8A5A00;
    --amber-wash:#F7EFDD;
    --maxw:1120px;
    --pad:24px;
  }
  *{box-sizing:border-box;margin:0;padding:0;}
  html{scroll-behavior:smooth;}
  body{
    background:var(--paper);color:var(--ink);
    font-family:'IBM Plex Sans',system-ui,sans-serif;
    font-size:16.5px;line-height:1.65;-webkit-font-smoothing:antialiased;
  }
  ::selection{background:var(--blue);color:#fff;}
  a{color:var(--blue);text-decoration:none;}
  a:hover{text-decoration:underline;}
  a:focus-visible,button:focus-visible{outline:2px solid var(--blue);outline-offset:3px;border-radius:2px;}
  .mono{font-family:'IBM Plex Mono',monospace;}
  .wrap{max-width:var(--maxw);margin:0 auto;padding:0 var(--pad);}
  .display{font-family:'Bricolage Grotesque','Archivo',sans-serif;}

  /* ---------------- Nav ---------------- */
  header{position:sticky;top:0;z-index:50;background:rgba(251,250,247,.9);backdrop-filter:blur(8px);border-bottom:1px solid var(--line-2);}
  .nav{display:flex;align-items:center;justify-content:space-between;height:64px;}
  .mark{display:flex;align-items:center;gap:10px;}
  .mark svg{display:block;}
  .mark .wm{font-family:'Bricolage Grotesque',sans-serif;font-weight:800;font-size:19px;letter-spacing:.01em;color:var(--ink);}
  .nav nav ul{display:flex;gap:28px;list-style:none;align-items:center;}
  .nav nav a{font-family:'IBM Plex Mono',monospace;font-size:12.5px;letter-spacing:.05em;color:var(--muted);text-transform:uppercase;}
  .nav nav a:hover{color:var(--blue);text-decoration:none;}
  .nav .work-cta{border:1px solid var(--ink);padding:8px 15px;color:var(--ink);}
  .nav .work-cta:hover{background:var(--ink);color:var(--paper);text-decoration:none;}
  @media(max-width:760px){.nav nav ul{gap:16px;}.nav nav li.hide-sm{display:none;}}
  /* below ~520px there is only room for the wordmark and one action */
  @media(max-width:520px){
    .nav{gap:12px;}
    .nav nav ul{gap:12px;}
    .nav nav li:not(:last-child){display:none;}
    .nav .work-cta{white-space:nowrap;padding:7px 12px;font-size:11.5px;}
    .mark{gap:8px;}
    .mark .wm{font-size:17px;}
  }
  @media(max-width:340px){
    .nav .work-cta{padding:6px 9px;font-size:11px;}
    .mark .wm{font-size:16px;}
  }

  /* ---------------- Hero / waterline signature ---------------- */
  .hero{padding:74px 0 30px;}
  .hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center;}
  @media(max-width:900px){.hero-grid{grid-template-columns:1fr;gap:40px;}}
  .eyebrow{font-family:'IBM Plex Mono',monospace;font-size:clamp(11px,2.4vw,12.5px);letter-spacing:.14em;color:var(--muted);text-transform:uppercase;margin-bottom:22px;display:flex;align-items:flex-start;gap:10px;}
  /* rule aligns to the first line rather than centring on a wrapped block */
  .eyebrow::before{content:"";width:24px;height:1px;background:var(--blue);flex:none;margin-top:.75em;}
  h1{font-family:'Bricolage Grotesque',sans-serif;font-weight:800;font-size:clamp(34px,5.2vw,56px);line-height:1.04;letter-spacing:-.02em;margin-bottom:22px;}
  h1 em{font-style:normal;color:var(--blue);}
  h1 .h1-role{display:block;font-size:clamp(15px,2.7vw,22px);line-height:1.25;color:var(--blue);letter-spacing:-.005em;margin-top:14px;}
  .hero p.lede{font-size:18px;color:var(--muted);max-width:50ch;margin-bottom:30px;}
  .hero p.lede strong{color:var(--ink);font-weight:600;}
  .cta-row{display:flex;gap:14px;flex-wrap:wrap;}
  .btn{display:inline-flex;align-items:center;gap:8px;font-family:'IBM Plex Mono',monospace;font-size:13px;letter-spacing:.03em;padding:12px 20px;border:1px solid var(--ink);color:var(--ink);background:transparent;cursor:pointer;transition:all .15s ease;}
  .btn:hover{background:var(--ink);color:var(--paper);text-decoration:none;}
  .btn.primary{background:var(--blue);border-color:var(--blue);color:#fff;}
  .btn.primary:hover{background:#2E4460;border-color:#2E4460;}

  .waterline{border:1px solid var(--line-2);background:#fff;position:relative;padding:16px;}
  .waterline .tag{position:absolute;top:-1px;right:-1px;background:var(--ink);color:var(--paper);font-family:'IBM Plex Mono',monospace;font-size:10px;letter-spacing:.1em;padding:4px 9px;}
  .waterline svg{width:100%;height:auto;display:block;}
  .waterline text{font-family:'IBM Plex Mono',monospace;}
  @keyframes bob{0%,100%{transform:translateY(0);}50%{transform:translateY(-5px);}}
  @keyframes drift{0%,100%{transform:translateX(0);}50%{transform:translateX(4px);}}
  .float-a{animation:bob 4.2s ease-in-out infinite;transform-origin:center;}
  .float-b{animation:bob 5s ease-in-out infinite .6s;}
  .float-c{animation:drift 6s ease-in-out infinite;}
  .wave{stroke:var(--blue);stroke-width:1.4;fill:none;stroke-dasharray:4 5;}
  @keyframes flow{to{stroke-dashoffset:-36;}}
  .wave{animation:flow 3s linear infinite;}
  @media (prefers-reduced-motion: reduce){
    .float-a,.float-b,.float-c,.wave{animation:none;}
    html{scroll-behavior:auto;}
    .reveal{transition:none!important;}
  }

  /* ---------------- Section header ---------------- */
  section{padding:80px 0 8px;}
  .head{display:flex;align-items:baseline;gap:14px;border-bottom:1px solid var(--line-2);padding-bottom:12px;margin-bottom:34px;}
  .head .idx{font-family:'IBM Plex Mono',monospace;font-size:12px;letter-spacing:.1em;color:var(--blue);white-space:nowrap;}
  .head h2{font-family:'Bricolage Grotesque',sans-serif;font-weight:800;font-size:clamp(22px,3vw,30px);letter-spacing:-.01em;}
  .head .note{margin-left:auto;font-family:'IBM Plex Mono',monospace;font-size:11.5px;color:var(--muted);}
  @media(max-width:720px){.head .note{display:none;}}

  /* ---------------- Products ---------------- */
  .prod-grid{display:grid;grid-template-columns:1fr;gap:20px;}
  .product{border:1px solid var(--line-2);background:#fff;display:grid;grid-template-columns:1.35fr .95fr;transition:border-color .15s ease;}
  .product:hover{border-color:var(--ink);}
  @media(max-width:840px){.product{grid-template-columns:1fr;}}
  .product .body{padding:30px 32px;}
  .product .side{border-left:1px solid var(--line);background:var(--paper);padding:30px 32px;display:flex;flex-direction:column;justify-content:space-between;gap:20px;}
  @media(max-width:840px){.product .side{border-left:0;border-top:1px solid var(--line);}}
  .status{display:inline-flex;align-items:center;gap:7px;font-family:'IBM Plex Mono',monospace;font-size:11px;letter-spacing:.07em;text-transform:uppercase;padding:4px 10px;}
  .status.live{background:var(--green-wash);color:var(--green);}
  .status.live::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--green);}
  .status.beta{background:var(--blue-wash);color:var(--blue);}
  .status.beta::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--blue);}
  .status.lab{background:var(--amber-wash);color:var(--amber);}
  .status.lab::before{content:"";width:7px;height:7px;border:1px solid var(--amber);border-radius:50%;}
  .product h3{font-family:'Bricolage Grotesque',sans-serif;font-weight:800;font-size:27px;letter-spacing:-.01em;margin:14px 0 10px;}
  .product .kicker{font-family:'IBM Plex Mono',monospace;font-size:12px;color:var(--muted);letter-spacing:.03em;margin-bottom:2px;}
  .product .body p{color:var(--muted);margin-bottom:14px;max-width:52ch;}
  .product .body p strong{color:var(--ink);font-weight:600;}
  .visit{font-family:'IBM Plex Mono',monospace;font-size:13px;color:var(--blue);display:inline-flex;gap:8px;align-items:center;}
  .featurelist{list-style:none;font-size:14px;}
  .featurelist li{display:flex;gap:9px;padding:8px 0;border-bottom:1px dashed var(--line);align-items:baseline;}
  .featurelist li:last-child{border-bottom:0;}
  .featurelist .dot{color:var(--blue);font-family:'IBM Plex Mono',monospace;flex-shrink:0;}
  .product.pending{opacity:.96;}
  .product.pending .body h3{color:var(--muted);}

  /* ---------------- Thesis / how we build ---------------- */
  .thesis{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;}
  @media(max-width:820px){.thesis{grid-template-columns:1fr;}}
  .t-item{border-left:2px solid var(--blue);padding:4px 0 6px 20px;}
  .t-item h3{font-family:'Bricolage Grotesque',sans-serif;font-weight:700;font-size:18px;margin-bottom:6px;}
  .t-item p{color:var(--muted);font-size:15px;}

  /* ---------------- Founder ---------------- */
  .founder{display:grid;grid-template-columns:150px 1fr;gap:32px;align-items:start;border:1px solid var(--line-2);background:#fff;padding:34px 36px;}
  @media(max-width:720px){.founder{grid-template-columns:1fr;gap:20px;}}
  .avatar{width:150px;height:150px;border:1px solid var(--line-2);background:var(--water);display:flex;align-items:center;justify-content:center;}
  .avatar .init{font-family:'Bricolage Grotesque',sans-serif;font-weight:800;font-size:52px;color:var(--blue);}
  .founder h3{font-family:'Bricolage Grotesque',sans-serif;font-weight:800;font-size:22px;margin-bottom:4px;}
  .founder .role{font-family:'IBM Plex Mono',monospace;font-size:12.5px;color:var(--muted);letter-spacing:.04em;margin-bottom:16px;text-transform:uppercase;}
  .founder p{color:var(--muted);max-width:64ch;margin-bottom:12px;}
  .founder p strong{color:var(--ink);font-weight:600;}
  .founder .links{display:flex;gap:18px;flex-wrap:wrap;font-family:'IBM Plex Mono',monospace;font-size:13px;margin-top:8px;}
  .founder .links a{font-weight:700;}

  /* ---------------- Contact ---------------- */
  .contact{border:1px solid var(--ink);background:#fff;padding:46px 40px;display:flex;flex-wrap:wrap;gap:30px;justify-content:space-between;align-items:center;}
  .contact h2{font-family:'Bricolage Grotesque',sans-serif;font-weight:800;font-size:clamp(24px,3.4vw,34px);letter-spacing:-.01em;max-width:22ch;line-height:1.12;}
  .contact .cl{display:flex;flex-direction:column;gap:10px;font-family:'IBM Plex Mono',monospace;font-size:14px;min-width:0;max-width:100%;}
  .contact .cl a{display:flex;gap:10px;align-items:baseline;font-weight:700;min-width:0;overflow-wrap:anywhere;}
  .contact .cl .k{color:var(--muted);font-size:11px;letter-spacing:.08em;min-width:80px;text-transform:uppercase;font-weight:400;flex:none;}
  @media(max-width:620px){
    .contact{padding:30px 22px;gap:22px;}
    .contact .cl{font-size:13px;}
    .contact .cl a{flex-direction:column;gap:2px;}
    .contact .cl .k{min-width:0;}
  }

  footer{margin-top:78px;border-top:1px solid var(--line-2);padding:26px 0 42px;}
  footer .frow{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-family:'IBM Plex Mono',monospace;font-size:12px;color:var(--muted);}

  .reveal{opacity:0;transform:translateY(14px);transition:opacity .5s ease,transform .5s ease;}
  .reveal.visible{opacity:1;transform:none;}
  .founder .founder-more{margin-top:16px;font-family:'IBM Plex Mono',monospace;font-size:13px;}
  .founder .founder-more a{font-weight:700;}
  /* single-column card: same shell as .founder, without the avatar track */
  .panel{border:1px solid var(--line-2);background:#fff;padding:34px 36px;}
  .panel h3{font-family:'Bricolage Grotesque',sans-serif;font-weight:800;font-size:22px;margin-bottom:4px;}
  .panel .role{font-family:'IBM Plex Mono',monospace;font-size:12.5px;color:var(--muted);letter-spacing:.04em;margin-bottom:16px;text-transform:uppercase;}
  .panel p{color:var(--muted);max-width:64ch;margin-bottom:12px;}
  .panel p strong{color:var(--ink);font-weight:600;}
  .panel .links{display:flex;gap:18px;flex-wrap:wrap;font-family:'IBM Plex Mono',monospace;font-size:13px;margin-top:18px;}
  .panel .links a{font-weight:700;}
  @media(max-width:560px){.panel{padding:26px 22px;}}
  .panel-cols{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start;}
  @media(max-width:900px){.panel-cols{grid-template-columns:1fr;gap:30px;}}
  .panel-cols>div{min-width:0;}
  .panel-cols p{max-width:56ch;}

  /* label + value rows (Arc / Systems / Stack / In the lab) */
  .stackline{display:grid;grid-template-columns:92px minmax(0,1fr);gap:12px;align-items:baseline;font-family:'IBM Plex Mono',monospace;font-size:12.5px;line-height:1.7;color:var(--muted);margin-bottom:12px;}
  .stackline .k{color:var(--ink);font-size:11px;letter-spacing:.08em;text-transform:uppercase;font-weight:500;}
  @media(max-width:560px){.stackline{grid-template-columns:1fr;gap:3px;margin-bottom:14px;}}

  /* =====================================================================
     Responsive system — patterns borrowed from the Arc landing page
     ===================================================================== */

  /* 1. Fluid gutters: the page gets its margins back on small screens */
  @media(max-width:600px){:root{--pad:18px;}}
  @media(max-width:360px){:root{--pad:15px;}}

  /* 2. Typography wraps deliberately instead of leaving orphans */
  h1,h2,h3,.head h2{text-wrap:balance;}
  p{text-wrap:pretty;}
  body{overflow-wrap:break-word;}

  /* 3. Buttons never wrap mid-label */
  .btn,.visit,.status{white-space:nowrap;}
  .cta-row .btn{flex:0 1 auto;}

  /* 4. Every display size is fluid, not just h1 */
  .product h3{font-size:clamp(21px,3.4vw,27px);}
  .founder h3,.panel h3{font-size:clamp(19px,2.7vw,22px);}
  .t-item h3{font-size:clamp(16.5px,2.3vw,18px);}
  .avatar .init{font-size:clamp(38px,9vw,52px);}

  /* 5. Grid and flex children may shrink below their content width */
  .hero-grid>*,.product>*,.thesis>*,.founder>*,.contact>*,.prod-grid>*{min-width:0;}

  /* 6. Reading-measure caps are a desktop concern; drop them on mobile
        so text uses the full column instead of ragging early */
  @media(max-width:760px){
    .hero p.lede{max-width:none;}
    .product .body p{max-width:none;}
    .founder p,.panel p,.panel-cols p{max-width:none;}
    .contact h2{max-width:none;}
  }

  /* 7. Vertical rhythm compresses as the viewport narrows */
  @media(max-width:820px){
    section{padding:62px 0 8px;}
    .hero{padding:48px 0 24px;}
    footer{margin-top:60px;}
  }
  @media(max-width:560px){
    section{padding:48px 0 8px;}
    .hero{padding:34px 0 18px;}
    .head{margin-bottom:26px;}
    .product .body,.product .side{padding:24px 20px;}
    .founder{padding:26px 20px;}
    .waterline{padding:12px;}
    footer{margin-top:48px;padding:22px 0 34px;}
  }