:root{
    --paper:#EDE8DC;
    --paper-deep:#E4DECD;
    --ink:#1B2A3A;
    --blue:#2F5D8C;
    --blue-soft:#5C82A8;
    --redline:#B5432B;
    --graphite:#4A4A45;
    --steel:#8B9199;
    --steel-line: rgba(27,42,58,0.18);
    --max: 1180px;
  }
  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--paper);
    background-image:
      linear-gradient(var(--steel-line) 1px, transparent 1px),
      linear-gradient(90deg, var(--steel-line) 1px, transparent 1px);
    background-size: 42px 42px;
    color:var(--graphite);
    font-family:'IBM Plex Sans', sans-serif;
    -webkit-font-smoothing:antialiased;
  }
  ::selection{ background:var(--redline); color:var(--paper); }
  h1,h2,h3{
    font-family:'Archivo', sans-serif;
    color:var(--ink);
    margin:0;
    letter-spacing:-0.01em;
  }
  .mono{ font-family:'IBM Plex Mono', monospace; }
  .wrap{ max-width:var(--max); margin:0 auto; padding:0 28px; }
  a{ color:inherit; }

  /* crop-mark framed section */
  .sheet{ position:relative; padding:88px 0; border-top:1px solid var(--steel-line); }
  .sheet .wrap{ position:relative; }
  .tick{ position:absolute; width:14px; height:14px; }
  .tick::before,.tick::after{ content:""; position:absolute; background:var(--ink); opacity:0.35; }
  .tick::before{ width:14px; height:1px; top:0; left:0; }
  .tick::after{ width:1px; height:14px; top:0; left:0; }
  .tick.tl{ top:14px; left:14px; }
  .tick.tr{ top:14px; right:14px; transform:scaleX(-1); }
  .tick.bl{ bottom:14px; left:14px; transform:scaleY(-1); }
  .tick.br{ bottom:14px; right:14px; transform:scale(-1,-1); }

  .eyebrow{
    display:inline-flex; align-items:center; gap:8px;
    font-family:'IBM Plex Mono', monospace;
    font-size:11.5px; letter-spacing:0.14em; text-transform:uppercase;
    color:var(--blue); font-weight:500; margin-bottom:16px;
  }
  .eyebrow::before{ content:""; width:18px; height:1px; background:var(--redline); display:inline-block; }

  /* ===== HEADER / TITLE BLOCK NAV ===== */
  header{
    position:sticky; top:0; z-index:50;
    background:rgba(237,232,220,0.92);
    backdrop-filter:blur(6px);
    border-bottom:1.5px solid var(--ink);
  }
  .navrow{
    display:flex; align-items:center; justify-content:space-between;
    padding:16px 0;
  }
  .brand{ display:flex; align-items:center; gap:12px; }
  .brand-mark{
    width:38px; height:38px; border:1.5px solid var(--ink); position:relative; flex:none;
    display:flex; align-items:center; justify-content:center;
  }
  .brand-mark span{ font-family:'Archivo'; font-weight:800; font-size:15px; color:var(--redline); }
  .brand-name{ line-height:1.15; }
  .brand-name .b1{ font-family:'Archivo'; font-weight:700; font-size:15.5px; color:var(--ink); }
  .brand-name .b2{ font-family:'IBM Plex Mono'; font-size:10px; letter-spacing:0.08em; color:var(--steel); text-transform:uppercase; }
  nav ul{ list-style:none; display:flex; gap:30px; margin:0; padding:0; }
  nav a{ text-decoration:none; font-size:13.5px; font-weight:500; color:var(--graphite); }
  nav a:hover{ color:var(--redline); }
  .cta-btn{
    font-family:'IBM Plex Mono'; font-size:12.5px; font-weight:500;
    border:1.5px solid var(--ink); color:var(--ink); text-decoration:none;
    padding:9px 16px; white-space:nowrap;
    transition:background .15s, color .15s;
  }
  .cta-btn:hover{ background:var(--ink); color:var(--paper); }
  .cta-btn.solid{ background:var(--ink); color:var(--paper); }
  .cta-btn.solid:hover{ background:var(--redline); border-color:var(--redline); }
  .navcta{ display:none; }
  @media(min-width:760px){ .navcta{ display:inline-block; } }
  .navlinks{ display:none; }
  @media(min-width:900px){ .navlinks{ display:block; } }

  /* ===== HERO ===== */
  .hero{ padding:70px 0 40px; border-top:none; }
  .hero-grid{ display:grid; grid-template-columns:1fr; gap:48px; align-items:center; }
  @media(min-width:960px){ .hero-grid{ grid-template-columns:1.05fr 0.95fr; } }
  .hero h1{
    font-size:clamp(34px, 5.2vw, 56px);
    line-height:1.04;
    font-weight:800;
  }
  .hero h1 em{ font-style:normal; color:var(--redline); }
  .hero p.lead{
    font-size:17px; line-height:1.6; color:var(--graphite);
    margin:22px 0 30px; max-width:52ch;
  }
  .hero-ctas{ display:flex; gap:14px; flex-wrap:wrap; align-items:center; }
  .hero-note{ margin-top:20px; font-family:'IBM Plex Mono'; font-size:11.5px; color:var(--steel); letter-spacing:.02em; }

  .drawing-frame{
    border:1.5px solid var(--ink); background:rgba(255,255,255,0.28);
    position:relative; padding:18px 18px 0;
  }
  .drawing-frame .dcaption{
    display:flex; justify-content:space-between; align-items:center;
    border-top:1px solid var(--ink); margin-top:14px; padding:8px 2px;
    font-family:'IBM Plex Mono'; font-size:10.5px; color:var(--steel); letter-spacing:.04em;
  }
  .drawing-frame .dcaption b{ color:var(--ink); font-weight:600; }
  svg.hero-svg{ width:100%; height:auto; display:block; }
  .pipe{ fill:none; stroke:var(--blue); stroke-width:3; stroke-linecap:round; stroke-linejoin:round; }
  .pipe-exist{ stroke:var(--steel); stroke-dasharray:4 5; stroke-width:2; }
  .cloud{ fill:none; stroke:var(--redline); stroke-width:2.4; stroke-linecap:round; stroke-linejoin:round; }
  .dim{ stroke:var(--steel); stroke-width:1; }
  .label-mono{ font-family:'IBM Plex Mono', monospace; fill:var(--ink); }
  .label-mono.dim-t{ fill:var(--steel); }
  .tie-dot{ fill:var(--redline); }

  /* ===== PROBLEM STRIP ===== */
  .problem .wrap > .head{ max-width:64ch; margin-bottom:44px; }
  .problem .head p{ font-size:16px; line-height:1.65; color:var(--graphite); margin-top:14px;}
  .pgrid{ display:grid; grid-template-columns:1fr; gap:1px; background:var(--steel-line); border:1px solid var(--steel-line); }
  @media(min-width:760px){ .pgrid{ grid-template-columns:repeat(3,1fr); } }
  .pcell{ background:var(--paper); padding:28px 26px; }
  .pcell .num{ font-family:'IBM Plex Mono'; font-size:11px; color:var(--redline); letter-spacing:.06em; }
  .pcell h3{ font-size:17px; margin:10px 0 8px; font-weight:700; }
  .pcell p{ font-size:14.5px; line-height:1.6; margin:0; color:var(--graphite); }

  /* ===== SERVICES (BOQ style) ===== */
  .boq{ border-top:1.5px solid var(--ink); border-bottom:1.5px solid var(--ink); }
  .boq-row{
    display:grid; grid-template-columns:56px 1fr; gap:20px;
    padding:26px 0; border-bottom:1px solid var(--steel-line);
  }
  .boq-row:last-child{ border-bottom:none; }
  .boq-row .item-no{ font-family:'IBM Plex Mono'; font-size:13px; color:var(--redline); padding-top:3px; }
  .boq-row h3{ font-size:18.5px; margin-bottom:6px; }
  .boq-row p{ font-size:14.5px; line-height:1.6; margin:0; max-width:70ch; color:var(--graphite); }
  .boq-row .tag{
    display:inline-block; margin-top:10px; font-family:'IBM Plex Mono'; font-size:10.5px;
    color:var(--blue); border:1px solid var(--blue-soft); padding:3px 8px; letter-spacing:.04em;
  }

  /* ===== DISCIPLINE REGISTER ===== */
  .disc-table{ border:1.5px solid var(--ink); }
  .disc-headrow{
    display:grid; grid-template-columns:72px 1fr;
    background:var(--ink); color:var(--paper);
  }
  .disc-headrow div{ font-family:'IBM Plex Mono'; font-size:10.5px; letter-spacing:.08em; text-transform:uppercase; padding:11px 16px; }
  .disc-row{
    display:grid; grid-template-columns:72px 1fr;
    border-top:1px solid var(--steel-line);
  }
  .disc-row:first-of-type{ border-top:none; }
  .disc-code{
    font-family:'IBM Plex Mono'; font-weight:600; font-size:15px; color:var(--redline);
    display:flex; align-items:center; justify-content:center;
    border-right:1px solid var(--steel-line);
  }
  .disc-body{ padding:18px 20px; }
  .disc-body h3{ font-size:16px; margin-bottom:5px; }
  .disc-body p{ font-size:14px; line-height:1.55; margin:0; color:var(--graphite); max-width:64ch; }

  /* ===== QUALITY ===== */
  .quality-grid{ display:grid; grid-template-columns:1fr; gap:44px; }
  @media(min-width:960px){ .quality-grid{ grid-template-columns:1fr 0.82fr; align-items:start; } }
  .qc-steps{ counter-reset:qc; }
  .qc-step{
    display:grid; grid-template-columns:auto 1fr; gap:16px;
    padding:18px 0; border-bottom:1px solid var(--steel-line);
  }
  .qc-step:first-child{ padding-top:0; }
  .qc-step:last-child{ border-bottom:none; }
  .qc-step .stamp{
    font-family:'IBM Plex Mono'; font-size:11px; font-weight:600; color:var(--ink);
    border:1.5px solid var(--ink); width:38px; height:38px; border-radius:50%;
    display:flex; align-items:center; justify-content:center; flex:none;
  }
  .qc-step h3{ font-size:15.5px; margin-bottom:4px; }
  .qc-step p{ font-size:14px; line-height:1.55; margin:0; color:var(--graphite); }
  .qc-panel{
    border:1.5px solid var(--ink); padding:26px; background:rgba(255,255,255,0.3); position:relative;
  }
  .qc-panel .stamp-mark{
    position:absolute; top:22px; right:22px; width:76px; height:76px;
    border:2px solid var(--redline); border-radius:50%;
    display:flex; align-items:center; justify-content:center; text-align:center;
    transform:rotate(-14deg); opacity:0.85;
  }
  .qc-panel .stamp-mark span{
    font-family:'IBM Plex Mono'; font-size:9px; font-weight:700; color:var(--redline);
    letter-spacing:.06em; line-height:1.35;
  }
  .qc-panel h3{ font-size:18px; margin-bottom:14px; max-width:75%; }
  .qc-panel ul{ list-style:none; margin:0; padding:0; }
  .qc-panel li{ font-size:14px; line-height:1.6; color:var(--graphite); padding:6px 0 6px 18px; position:relative; }
  .qc-panel li::before{ content:"—"; position:absolute; left:0; color:var(--blue); }

  /* ===== PROCESS (revisions) ===== */
  .rev-line{ position:relative; }
  .rev-track{ position:relative; padding-left:0; }
  .rev-step{
    display:grid; grid-template-columns:64px 1fr; gap:22px; position:relative; padding-bottom:44px;
  }
  .rev-step:last-child{ padding-bottom:0; }
  .rev-marker{
    width:44px; height:44px; border:1.5px solid var(--ink); border-radius:50%;
    display:flex; align-items:center; justify-content:center;
    font-family:'IBM Plex Mono'; font-weight:600; font-size:14px; background:var(--paper);
    position:relative; z-index:2;
  }
  .rev-track::before{
    content:""; position:absolute; left:22px; top:22px; bottom:22px; width:1px;
    background:repeating-linear-gradient(var(--steel) 0 5px, transparent 5px 10px);
  }
  .rev-step h3{ font-size:17.5px; margin-bottom:6px; }
  .rev-step p{ font-size:14.5px; line-height:1.6; margin:0; color:var(--graphite); max-width:60ch; }
  .rev-step .when{ font-family:'IBM Plex Mono'; font-size:10.5px; color:var(--steel); margin-top:8px; display:block; }

  /* ===== FOUNDER ===== */
  .founder-grid{ display:grid; grid-template-columns:1fr; gap:44px; }
  @media(min-width:900px){ .founder-grid{ grid-template-columns:0.85fr 1.15fr; align-items:start; } }
  .founder-card{
    border:1.5px solid var(--ink); padding:26px; background:rgba(255,255,255,0.3);
  }
  .founder-card .name{ font-family:'Archivo'; font-weight:700; font-size:20px; color:var(--ink); }
  .founder-card .role{ font-family:'IBM Plex Mono'; font-size:11.5px; color:var(--blue); margin-top:4px; }
  .credlist{ list-style:none; margin:18px 0 0; padding:14px 0 0; border-top:1px solid var(--steel-line); }
  .credlist li{ font-size:13.5px; padding:5px 0; color:var(--graphite); display:flex; gap:8px; }
  .credlist li::before{ content:"◆"; color:var(--redline); font-size:8px; margin-top:5px; }
  .founder-copy h3{ font-size:22px; margin-bottom:16px; }
  .founder-copy p{ font-size:15.5px; line-height:1.7; color:var(--graphite); margin:0 0 16px; }
  .indlist{ display:flex; flex-wrap:wrap; gap:8px; margin-top:20px; }
  .indlist span{
    font-family:'IBM Plex Mono'; font-size:11px; border:1px solid var(--steel-line);
    padding:6px 10px; color:var(--ink); letter-spacing:.02em;
  }

  /* ===== WHY ===== */
  .why-grid{ display:grid; grid-template-columns:1fr; gap:1px; background:var(--steel-line); border:1px solid var(--steel-line); margin-top:40px;}
  @media(min-width:760px){ .why-grid{ grid-template-columns:repeat(2,1fr);} }
  .why-cell{ background:var(--paper); padding:30px; }
  .why-cell h3{ font-size:16.5px; margin-bottom:8px; display:flex; align-items:baseline; gap:10px;}
  .why-cell h3 .wn{ font-family:'IBM Plex Mono'; font-size:12px; color:var(--redline); }
  .why-cell p{ font-size:14.5px; line-height:1.6; margin:0; color:var(--graphite); }

  /* ===== CONTACT / FINAL TITLE BLOCK ===== */
  .contact{ border-top:1.5px solid var(--ink); }
  .contact-inner{ display:grid; grid-template-columns:1fr; gap:36px; }
  @media(min-width:900px){ .contact-inner{ grid-template-columns:1.2fr 1fr; } }
  .contact h2{ font-size:clamp(28px,3.6vw,40px); line-height:1.1; margin-bottom:18px; }
  .contact p.lead{ font-size:15.5px; line-height:1.65; color:var(--graphite); max-width:52ch; }
  .titleblock{
    border:1.5px solid var(--ink);
  }
  .tb-row{ display:grid; grid-template-columns:1fr 1fr; border-bottom:1px solid var(--ink); }
  .tb-row:last-child{ border-bottom:none; }
  .tb-cell{ padding:14px 16px; border-right:1px solid var(--ink); }
  .tb-cell:last-child{ border-right:none; }
  .tb-cell .k{ font-family:'IBM Plex Mono'; font-size:9.5px; letter-spacing:.08em; text-transform:uppercase; color:var(--steel); }
  .tb-cell .v{ font-size:13.5px; color:var(--ink); margin-top:4px; font-weight:500; word-break:break-word; }
  .tb-cell.full{ grid-column:1 / -1; }
  .tb-head{ background:var(--ink); color:var(--paper); padding:12px 16px; font-family:'IBM Plex Mono'; font-size:11px; letter-spacing:.08em; }

  footer{ border-top:1px solid var(--steel-line); padding:26px 0; }
  .footrow{ display:flex; justify-content:space-between; flex-wrap:wrap; gap:10px; font-family:'IBM Plex Mono'; font-size:10.5px; color:var(--steel); }

  @media(prefers-reduced-motion: reduce){
    .draw{ stroke-dashoffset:0 !important; animation:none !important; }
  }

  /* ===== MULTI-PAGE NAV ===== */
  nav a.current{ color:var(--redline); }
  a.brand-link{ text-decoration:none; display:flex; align-items:center; gap:12px; }

  /* ===== PAGE INTRO (sub-pages) ===== */
  .page-intro{ padding:56px 0 20px; border-top:none; }
  .page-intro .back{
    font-family:'IBM Plex Mono'; font-size:11.5px; color:var(--steel);
    text-decoration:none; display:inline-flex; align-items:center; gap:6px; margin-bottom:22px;
  }
  .page-intro .back:hover{ color:var(--redline); }
  .page-intro h1{ font-size:clamp(30px,4.4vw,44px); line-height:1.06; font-weight:800; max-width:18ch; }
  .page-intro p.lead{ font-size:16px; line-height:1.65; color:var(--graphite); max-width:58ch; margin-top:18px; }

  /* ===== HOME: SECTION TEASER CARDS ===== */
  .teaser-grid{ display:grid; grid-template-columns:1fr; gap:1px; background:var(--steel-line); border:1px solid var(--steel-line); }
  @media(min-width:760px){ .teaser-grid{ grid-template-columns:repeat(4,1fr);} }
  .teaser-cell{
    background:var(--paper); padding:30px 26px; text-decoration:none; color:inherit;
    display:flex; flex-direction:column; justify-content:space-between; min-height:190px;
    transition:background .15s;
  }
  .teaser-cell:hover{ background:rgba(255,255,255,0.5); }
  .teaser-cell .tnum{ font-family:'IBM Plex Mono'; font-size:11px; color:var(--redline); letter-spacing:.06em; }
  .teaser-cell h3{ font-size:17px; margin:12px 0 8px; }
  .teaser-cell p{ font-size:13.5px; line-height:1.55; margin:0; color:var(--graphite); }
  .teaser-cell .go{
    margin-top:16px; font-family:'IBM Plex Mono'; font-size:11.5px; color:var(--blue); font-weight:500;
  }

  /* ===== CONTACT STRIP (mini, used on sub-pages) ===== */
  .contact-strip{
    border-top:1.5px solid var(--ink); border-bottom:1.5px solid var(--ink);
    display:flex; flex-wrap:wrap; align-items:center; justify-content:space-between; gap:18px;
    padding:30px 0;
  }
  .contact-strip h3{ font-size:19px; }
  .contact-strip p{ font-size:14px; color:var(--graphite); margin:6px 0 0; }