:root{
    --ink:#15222E;
    --ink-soft: rgba(21,34,46,0.68);
    --paper:#EFEEE6;
    --panel:#F9F8F2;
    --line: rgba(21,34,46,0.16);
    --blueprint:#173A5E;
    --blueprint-2:#0F2A47;
    --cyan:#8FC3DE;
    --cyan-dim: rgba(143,195,222,0.4);
    --accent:#D96A2B;
    --accent-dark:#B4551F;
    --radius:3px;
  }
  *{ box-sizing:border-box; }
  html{ scroll-behavior:smooth; }
  body{
    margin:0;
    background:var(--paper);
    color:var(--ink);
    font-family:'Inter', sans-serif;
    font-size:16px;
    line-height:1.6;
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3{
    font-family:'Sora', sans-serif;
    margin:0;
    font-weight:600;
    letter-spacing:-0.01em;
  }
  .mono{ font-family:'JetBrains Mono', monospace; }
  a{ color:inherit; }
  :focus-visible{ outline:3px solid var(--accent); outline-offset:2px; }
  .wrap{ max-width:1100px; margin:0 auto; padding:0 28px; }

  /* ---------- HEADER ---------- */
  header{
    background:var(--panel);
    border-bottom:1px solid var(--line);
    position:sticky; top:0; z-index:20;
  }
  .header-inner{
    display:flex; align-items:center; justify-content:space-between;
    padding:14px 28px; max-width:1100px; margin:0 auto; gap:16px; flex-wrap:wrap;
  }
  .brand{ display:flex; align-items:center; gap:10px; text-decoration:none; color:var(--ink); }
  .brand img{ height:64px; display:block; }
  .brand span{ font-family:'Sora', sans-serif; font-weight:600; font-size:1.05rem; }
  .site-nav{ display:flex; align-items:center; gap:22px; font-size:0.92rem; }
  .site-nav a{ text-decoration:none; color:var(--ink-soft); }
  .site-nav a:hover{ color:var(--ink); }
  .nav-cta{
    background:var(--ink); color:var(--paper);
    padding:9px 16px; border-radius:var(--radius);
    font-weight:600; text-decoration:none; font-size:0.9rem;
  }
  .nav-cta:hover{ background:var(--blueprint-2); }

  /* ---------- HERO ---------- */
  .hero{ background:var(--blueprint); color:#fff; padding:70px 0 60px; position:relative; overflow:hidden; }
  .hero::before{
    content:""; position:absolute; inset:0;
    background-image:
      linear-gradient(var(--cyan-dim) 1px, transparent 1px),
      linear-gradient(90deg, var(--cyan-dim) 1px, transparent 1px);
    background-size:44px 44px;
    opacity:0.08;
    pointer-events:none;
  }
  .hero-inner{ position:relative; display:grid; grid-template-columns:1.05fr 0.95fr; gap:46px; align-items:center; }
  .eyebrow-tag{
    display:inline-flex; align-items:center; gap:8px;
    font-family:'JetBrains Mono', monospace; font-size:0.78rem;
    color:var(--cyan); border:1px solid var(--cyan-dim);
    padding:5px 10px; border-radius:20px; margin-bottom:18px;
  }
  .eyebrow-tag::before{ content:"●"; font-size:0.55rem; color:var(--accent); }
  .hero h1{ font-size:clamp(2rem, 3.6vw, 2.7rem); line-height:1.16; max-width:16ch; }
  .hero p{ margin:20px 0 0; font-size:1.05rem; max-width:46ch; color:rgba(239,238,230,0.82); }
  .hero-proof{
    margin:24px 0 30px; font-size:0.88rem; font-family:'JetBrains Mono', monospace;
    color:rgba(239,238,230,0.7); border-left:2px solid var(--accent); padding-left:12px;
  }
  .hero-actions{ display:flex; gap:14px; flex-wrap:wrap; }
  .btn-primary{
    background:var(--accent); color:#fff; border:none;
    padding:13px 22px; font-weight:600; font-size:0.98rem;
    border-radius:var(--radius); text-decoration:none; display:inline-block;
  }
  .btn-primary:hover{ background:var(--accent-dark); }
  .btn-secondary{
    background:transparent; color:#fff; border:1px solid rgba(255,255,255,0.4);
    padding:12px 21px; font-weight:600; font-size:0.98rem;
    border-radius:var(--radius); text-decoration:none; display:inline-block;
  }
  .btn-secondary:hover{ border-color:#fff; }

  /* schematic diagram */
  .diagram-panel{ position:relative; }
  .diagram-panel svg{ width:100%; height:auto; overflow:visible; }
  .diagram-label{ font-family:'JetBrains Mono', monospace; }

  /* ---------- SECTIONS ---------- */
  section{ padding:70px 0; }
  .section-head{ max-width:56ch; margin-bottom:38px; }
  .section-kicker{
    font-family:'JetBrains Mono', monospace; font-size:0.78rem;
    color:var(--accent-dark); text-transform:uppercase; letter-spacing:0.06em;
    margin-bottom:10px; display:block;
  }
  .section-head h2{ font-size:clamp(1.5rem, 2.4vw, 1.9rem); line-height:1.25; }
  .section-head p{ margin:14px 0 0; color:var(--ink-soft); font-size:1.02rem; }

  /* ---------- SHIPPED SPEC CARDS ---------- */
  .spec-grid{ display:grid; grid-template-columns:1fr 1fr; gap:24px; }
  .spec-card{
    background:var(--panel); border:1px solid var(--line);
    border-top:3px solid var(--blueprint);
    padding:26px 24px 24px; position:relative;
  }
  .spec-tags{ display:flex; gap:8px; flex-wrap:wrap; margin-bottom:14px; }
  .spec-tag{
    font-family:'JetBrains Mono', monospace; font-size:0.72rem;
    color:var(--blueprint); background:rgba(23,58,94,0.08);
    padding:4px 8px; border-radius:20px;
  }
  .spec-card h3{ font-size:1.15rem; margin-bottom:10px; }
  .spec-card p{ margin:0 0 18px; color:var(--ink-soft); font-size:0.95rem; }
  .spec-card .spec-link{
    font-family:'JetBrains Mono', monospace; font-size:0.85rem;
    color:var(--accent-dark); text-decoration:none; font-weight:600;
  }
  .spec-card .spec-link:hover{ text-decoration:underline; }
  .shipped-note{
    margin-top:22px; font-size:0.88rem; color:var(--ink-soft);
    font-family:'JetBrains Mono', monospace;
  }

  /* ---------- HOW IT CONNECTS (blueprint band) ---------- */
  .connects{ background:var(--blueprint-2); color:#fff; }
  .connects .section-head h2{ color:#fff; }
  .connects .section-head p{ color:rgba(239,238,230,0.72); }
  .connects .section-kicker{ color:var(--cyan); }
  .connect-grid{ display:grid; grid-template-columns:0.95fr 1.05fr; gap:44px; align-items:center; }
  .connect-points{ list-style:none; margin:0; padding:0; }
  .connect-points li{
    display:flex; gap:14px; padding:16px 0; border-top:1px solid rgba(255,255,255,0.12);
  }
  .connect-points li:first-child{ border-top:none; }
  .connect-num{ font-family:'JetBrains Mono', monospace; color:var(--accent); flex-shrink:0; }
  .connect-points h4{ font-family:'Sora', sans-serif; font-size:0.98rem; margin:0 0 4px; font-weight:600; }
  .connect-points p{ margin:0; font-size:0.9rem; color:rgba(239,238,230,0.72); }

  /* ---------- OTHER SERVICES (demoted) ---------- */
  .services-strip{ background:var(--paper); }
  .service-row{
    display:flex; justify-content:space-between; align-items:baseline; gap:20px;
    padding:20px 0; border-top:1px solid var(--line); flex-wrap:wrap;
  }
  .service-row:last-child{ border-bottom:1px solid var(--line); }
  .service-row h3{ font-size:1.02rem; font-weight:600; }
  .service-row p{ margin:6px 0 0; font-size:0.9rem; color:var(--ink-soft); max-width:56ch; }
  .service-row a{
    font-family:'JetBrains Mono', monospace; font-size:0.85rem;
    text-decoration:none; color:var(--blueprint); font-weight:600; white-space:nowrap;
  }
  .service-row a:hover{ text-decoration:underline; }

  /* ---------- CONTACT SPLIT ---------- */
  .contact-grid{ display:grid; grid-template-columns:1fr 1fr; gap:24px; }
  .contact-card{
    background:var(--panel); border:1px solid var(--line); padding:28px 26px;
  }
  .contact-card .section-kicker{ margin-bottom:8px; }
  .contact-card h3{ font-size:1.2rem; margin-bottom:10px; }
  .contact-card p{ margin:0 0 20px; color:var(--ink-soft); font-size:0.95rem; }
  .contact-card .btn-primary,
  .contact-card .btn-secondary{ color:#fff; }
  .contact-card.dark{ background:var(--blueprint); color:#fff; border:none; }
  .contact-card.dark p{ color:rgba(239,238,230,0.75); }
  .contact-card.dark .section-kicker{ color:var(--cyan); }

  /* ---------- FOOTER ---------- */
  footer{ background:var(--ink); color:rgba(239,238,230,0.6); padding:26px 0; font-size:0.85rem; }
  .footer-inner{ display:flex; justify-content:space-between; flex-wrap:wrap; gap:12px; align-items:center; }
  .footer-links{ display:flex; gap:18px; }
  .footer-inner a{ text-decoration:none; color:rgba(239,238,230,0.6); }
  .footer-inner a:hover{ color:#fff; }

  /* ---------- RESPONSIVE ---------- */
  @media (max-width:900px){
    .hero-inner{ grid-template-columns:1fr; }
    .diagram-panel{ order:-1; }
    .spec-grid{ grid-template-columns:1fr; }
    .connect-grid{ grid-template-columns:1fr; }
    .contact-grid{ grid-template-columns:1fr; }
  }
  @media (max-width:600px){
    .site-nav{ display:none; }
    section{ padding:52px 0; }
    .service-row{ flex-direction:column; align-items:flex-start; }
  }

  /* ---------- INNER PAGES ---------- */
  .section-head h1{ font-size:clamp(1.9rem, 3vw, 2.4rem); line-height:1.2; }
  .site-nav a.active{ color:var(--ink); font-weight:600; }
  input[type="text"],input[type="email"],textarea{
    width:100%; background:var(--panel); border:1px solid var(--line);
    border-radius:var(--radius); padding:10px 12px;
    font-family:'Inter', sans-serif; font-size:0.95rem; color:var(--ink);
  }
  input:focus,textarea:focus{ outline:2px solid var(--accent); border-color:var(--accent); }
  .form-row{ margin-bottom:14px; }
  .form-row label{ display:block; font-size:0.85rem; font-weight:600; margin-bottom:6px; color:var(--ink-soft); }
  .text-danger{ color:#B4451F; font-size:0.85rem; }
  .alert{ padding:10px 12px; border-radius:var(--radius); margin-top:10px; font-size:0.9rem; }
  .alert-success{ background:var(--cyan-dim); color:var(--blueprint-2); }
  .alert-danger{ background:#F3D9CC; color:#7A2E0E; }
  pre.install{
    background:var(--blueprint-2); color:#DCE9F2; padding:16px 18px;
    border-radius:var(--radius); overflow:auto; font-size:0.88rem;
    font-family:'JetBrains Mono', monospace;
  }
  .muted{ color:var(--ink-soft); font-size:0.9rem; }