:root{
    --ink:#0B1521;
    --ink-2:#101E30;
    --ink-border:#1E2E44;
    --steel:#8FA3B8;
    --paper:#F5F3EE;
    --paper-2:#EBE8DF;
    --slate-text:#26313F;
    --signal:#35B8AA;
    --signal-bright:#5FD9CB;
    --amber:#E0A63C;

    --font-display:'Space Grotesk', sans-serif;
    --font-body:'Inter', sans-serif;
    --font-mono:'IBM Plex Mono', monospace;

    --max-w:1180px;
  }

  *{box-sizing:border-box; margin:0; padding:0;}
  html{scroll-behavior:smooth;}
  body{
    font-family:var(--font-body);
    color:var(--slate-text);
    background:var(--paper);
    line-height:1.5;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%; display:block;}
  a{color:inherit; text-decoration:none;}
  ul{list-style:none;}
  section{padding:96px 24px;}
  .wrap{max-width:var(--max-w); margin:0 auto;}
  h1,h2,h3,h4{font-family:var(--font-display); font-weight:600; letter-spacing:-0.01em;}
  .eyebrow{
    font-family:var(--font-mono);
    font-size:12px;
    font-weight:500;
    letter-spacing:0.14em;
    text-transform:uppercase;
    color:var(--signal);
    display:inline-flex;
    align-items:center;
    gap:8px;
    margin-bottom:16px;
  }
  .eyebrow::before{
    content:"";
    width:16px;
    height:1px;
    background:var(--signal);
  }
  :focus-visible{ outline:2px solid var(--signal); outline-offset:3px; }
  .hidden-field{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden;}

  /* ---------- NAV ---------- */
  header{
    position:sticky; top:0; z-index:50;
    background:rgba(11,21,33,0.88);
    backdrop-filter:blur(10px);
    border-bottom:1px solid var(--ink-border);
  }
  nav.wrap{
    display:flex; align-items:center; justify-content:space-between;
    padding:18px 24px;
  }
  .brand{
    display:flex; align-items:center; gap:10px;
    font-family:var(--font-display); font-weight:700; font-size:19px;
    color:#fff;
  }
  .brand-mark{
    height:30px; width:auto;
    display:block;
    flex-shrink:0;
  }
  .footer-logo{
    height:36px; width:auto;
    display:block;
  }
  .nav-links{ display:flex; gap:20px; align-items:center; }
  .nav-links a{
    font-size:14px; color:var(--steel); font-weight:500;
    transition:color .15s ease;
  }
  .nav-links a:hover{ color:#fff; }
  .nav-login{
    border:1px solid rgba(95,217,203,.65);
    border-radius:5px;
    color:#fff !important;
    padding:9px 12px;
    white-space:nowrap;
  }
  .nav-login:hover{background:rgba(53,184,170,.16);border-color:var(--signal-bright);}
  .nav-cta{
    background:var(--signal); color:var(--ink) !important;
    padding:9px 18px; border-radius:6px; font-weight:600; font-size:13.5px;
  }
  .nav-cta:hover{ background:var(--signal-bright); }
  .nav-toggle{ display:none; background:none; border:none; color:#fff; font-size:22px; cursor:pointer; }
  .mobile-logins{display:none;gap:7px;margin-left:auto;}
  .mobile-logins a{border:1px solid rgba(95,217,203,.65);border-radius:5px;color:#fff;padding:7px 9px;font-size:11px;white-space:nowrap;}

  /* ---------- HERO ---------- */
  .hero{
    background:var(--ink);
    color:#fff;
    padding:120px 24px 80px;
    position:relative;
    overflow:hidden;
    border-bottom:1px solid var(--ink-border);
  }
  .hero .wrap{
    display:grid;
    grid-template-columns:1.05fr 0.95fr;
    gap:56px;
    align-items:center;
    position:relative;
    z-index:2;
  }
  .hero h1{
    font-size:clamp(34px, 4.6vw, 54px);
    line-height:1.08;
    color:#fff;
    margin-bottom:22px;
  }
  .hero h1 span{ color:var(--signal-bright); }
  .hero p.lede{
    font-size:17px; color:var(--steel); max-width:46ch; margin-bottom:32px;
  }
  .hero-actions{ display:flex; gap:14px; flex-wrap:wrap; }
  .btn-primary{
    background:var(--signal); color:var(--ink);
    padding:14px 24px; border-radius:6px; font-weight:600; font-size:14.5px;
    display:inline-flex; align-items:center; gap:8px;
    transition:background .15s ease, transform .15s ease;
  }
  .btn-primary:hover{ background:var(--signal-bright); transform:translateY(-1px); }
  .btn-secondary{
    border:1px solid var(--ink-border); color:#fff;
    padding:14px 24px; border-radius:6px; font-weight:600; font-size:14.5px;
    transition:border-color .15s ease, background .15s ease;
  }
  .btn-secondary:hover{ border-color:var(--signal); background:rgba(53,184,170,0.08); }

  /* signature signal-path diagram */
  .signal-diagram{ position:relative; }
  .signal-diagram svg{ width:100%; height:auto; }
  .node-label{
    font-family:var(--font-mono); font-size:11.5px; fill:var(--steel);
    letter-spacing:0.02em;
  }
  .node-dot{ fill:var(--ink); stroke:var(--signal); stroke-width:2; }
  .node-dot.active{ fill:var(--signal); }
  .path-line{
    fill:none; stroke:var(--ink-border); stroke-width:1.5;
  }
  .path-pulse{
    fill:none; stroke:var(--signal); stroke-width:1.5;
    stroke-dasharray:6 10;
    animation:dash 3.2s linear infinite;
  }
  @keyframes dash{ to{ stroke-dashoffset:-160; } }
  @keyframes pulseDot{
    0%,100%{ r:5; opacity:1; }
    50%{ r:7; opacity:0.65; }
  }
  .node-dot.active{ animation:pulseDot 2.4s ease-in-out infinite; }

  @media (prefers-reduced-motion:reduce){
    .path-pulse{ animation:none; stroke-dasharray:none; }
    .node-dot.active{ animation:none; }
  }

  /* ---------- SECTION HEADERS ---------- */
  .section-head{ max-width:640px; margin-bottom:52px; }
  .section-head h2{ font-size:clamp(26px,3.2vw,36px); color:var(--ink); margin-bottom:14px; }
  .section-head p{ color:#51606f; font-size:15.5px; }
  section.on-dark .section-head h2{ color:#fff; }
  section.on-dark .section-head p{ color:var(--steel); }

  /* ---------- PLATFORM GRID ---------- */
  .platform-grid{
    display:grid;
    grid-template-columns:repeat(3, 1fr);
    gap:20px;
  }
  .platform-card{
    background:#fff;
    border:1px solid #E2DED3;
    border-radius:10px;
    padding:28px 26px;
    display:flex; flex-direction:column; gap:14px;
    transition:border-color .15s ease, transform .15s ease;
  }
  .platform-card .icon-badge{
    width:44px; height:44px; border-radius:11px;
    display:block;
  }
  .platform-card:hover{ border-color:var(--signal); transform:translateY(-3px); }
  .platform-card .tag{
    font-family:var(--font-mono); font-size:11px; color:var(--signal);
    letter-spacing:0.08em; text-transform:uppercase;
  }
  .platform-card h3{ font-size:19px; color:var(--ink); }
  .platform-card p{ font-size:14px; color:#51606f; flex-grow:1; }
  .platform-card .link{
    font-family:var(--font-mono); font-size:12.5px; font-weight:600;
    color:var(--ink); display:inline-flex; align-items:center; gap:6px;
    padding-top:6px; border-top:1px solid #EDE9DE;
  }
  .platform-card .link:hover{ color:var(--signal); }
  .platform-card.wide{ grid-column:span 1; }

  /* ---------- QUICK OVERVIEW (What We Provide) ---------- */
  .overview-grid{
    display:grid; grid-template-columns:repeat(3, 1fr); gap:24px;
  }
  .overview-card{
    display:block;
    background:#fff; border:1px solid #E2DED3; border-radius:12px;
    padding:0; overflow:hidden;
    transition:border-color .15s ease, transform .15s ease, box-shadow .15s ease;
  }
  .overview-card:hover{
    border-color:var(--signal); transform:translateY(-3px);
    box-shadow:0 12px 30px rgba(11,21,33,0.08);
  }
  .overview-media{
    height:88px; display:flex; align-items:center; padding:24px 24px 0;
  }
  .overview-media svg{ width:48px; height:48px; }
  .overview-media-photo{
    height:200px; padding:0; background:linear-gradient(155deg, #0E1B2C, #16283F);
    align-items:stretch;
  }
  .overview-media-photo img{
    width:100%; height:100%; object-fit:cover; object-position:center 30%;
  }
  .overview-card h3{ font-size:18px; color:var(--ink); padding:18px 24px 0; }
  .overview-card p{ font-size:14px; color:#51606f; padding:8px 24px 0; }
  .overview-link{
    display:block; font-family:var(--font-mono); font-size:12.5px; font-weight:600;
    color:var(--ink); padding:16px 24px 22px;
  }
  .overview-card:hover .overview-link{ color:var(--signal); }

  @media (max-width: 900px){
    .overview-grid{ grid-template-columns:1fr; }
  }

  /* ---------- FEATURES / FACILITY ---------- */
  .facility-section{ background:var(--ink); color:#fff; }
  .feature-grid{
    display:grid; grid-template-columns:repeat(2,1fr); gap:1px;
    background:var(--ink-border);
    border:1px solid var(--ink-border);
    border-radius:10px;
    overflow:hidden;
  }
  .feature-item{ background:var(--ink-2); padding:30px; }
  .feature-item h4{ color:#fff; font-size:16.5px; margin-bottom:10px; }
  .feature-item p{ color:var(--steel); font-size:14px; }
  .feature-item .num{
    font-family:var(--font-mono); font-size:12px; color:var(--signal);
    margin-bottom:12px; display:block;
  }

  /* ---------- SAFE HARDWARE CALLOUT ---------- */
  .callout{
    margin-top:56px;
    display:grid; grid-template-columns:1fr 1fr; gap:48px; align-items:center;
    background:var(--ink-2);
    border:1px solid var(--ink-border);
    border-radius:12px; padding:44px;
  }
  .callout h3{ color:#fff; font-size:24px; margin-bottom:14px; }
  .callout p{ color:var(--steel); font-size:15px; margin-bottom:18px; }
  .callout ul{ display:flex; flex-direction:column; gap:10px; }
  .callout li{ font-size:14px; color:#DCE4EA; display:flex; gap:10px; }
  .callout li::before{ content:"—"; color:var(--signal); }
  .callout-visual{
    aspect-ratio:4/3; border-radius:10px;
    background:
      radial-gradient(circle at 30% 30%, rgba(53,184,170,0.25), transparent 60%),
      linear-gradient(155deg, #0E1B2C, #16283F);
    border:1px solid var(--ink-border);
    display:flex; align-items:center; justify-content:center;
    position:relative;
    overflow:hidden;
  }
  .callout-visual .badge{
    font-family:var(--font-mono); font-size:12px; color:var(--signal-bright);
    border:1px solid rgba(95,217,203,0.4);
    padding:8px 14px; border-radius:20px;
    background:rgba(53,184,170,0.08);
  }

  /* ---------- FAMILY SECTION ---------- */
  .family-section{
    background:var(--paper-2);
  }
  .family-grid{
    display:grid; grid-template-columns:1fr 1fr; gap:56px; align-items:center;
  }
  .family-steps{ display:flex; flex-direction:column; gap:22px; }
  .family-step{ display:flex; gap:16px; }
  .step-index{
    font-family:var(--font-mono); font-size:13px; color:var(--signal);
    background:#fff; border:1px solid #DAD5C7; border-radius:6px;
    width:34px; height:34px; flex-shrink:0;
    display:flex; align-items:center; justify-content:center;
  }
  .family-step h4{ font-size:15.5px; color:var(--ink); margin-bottom:4px; }
  .family-step p{ font-size:13.5px; color:#51606f; }
  .family-card{
    background:#fff; border:1px solid #DAD5C7; border-radius:12px;
    padding:36px;
  }
  .family-card .eyebrow{ color:var(--amber); }
  .family-card .eyebrow::before{ background:var(--amber); }
  .family-card h3{ font-size:22px; color:var(--ink); margin-bottom:12px; }
  .family-card p{ font-size:14.5px; color:#51606f; margin-bottom:24px; }
  .family-card .btn-primary{ width:100%; justify-content:center; }
  .family-card .btn-secondary{ width:100%; display:flex; align-items:center; justify-content:center; margin-top:10px; border-color:#DAD5C7; color:var(--ink); }
  .family-card .btn-secondary:hover{ border-color:var(--signal); }

  /* ---------- STATS STRIP ---------- */
  .stats-strip{
    background:var(--ink);
    border-top:1px solid var(--ink-border);
    border-bottom:1px solid var(--ink-border);
    padding:56px 24px;
  }
  .stats-strip .wrap{
    display:grid; grid-template-columns:repeat(4,1fr); gap:24px;
  }
  .stat h3{
    font-family:var(--font-mono); color:var(--signal-bright);
    font-size:clamp(19px,2vw,28px); margin-bottom:6px;
  }
  .stat p{ color:var(--steel); font-size:13px; }

  /* ---------- CONTACT ---------- */
  .contact-section .wrap{
    display:grid; grid-template-columns:1fr 1fr; gap:56px;
  }
  .contact-form{
    background:#fff; border:1px solid #E2DED3; border-radius:12px; padding:36px;
  }
  .contact-form label{
    display:block; font-size:12.5px; font-family:var(--font-mono);
    color:#51606f; margin-bottom:6px; margin-top:18px;
  }
  .contact-form label:first-of-type{ margin-top:0; }
  .contact-form input, .contact-form select, .contact-form textarea{
    width:100%; padding:11px 12px; border:1px solid #DAD5C7; border-radius:6px;
    font-family:var(--font-body); font-size:14px; background:var(--paper);
    color:var(--slate-text);
  }
  .contact-form textarea{ resize:vertical; min-height:90px; }
  .contact-form .btn-primary{ margin-top:24px; width:100%; justify-content:center; border:none; cursor:pointer; }
  .contact-info{ display:flex; flex-direction:column; gap:28px; }
  .info-block h4{
    font-family:var(--font-mono); font-size:12px; text-transform:uppercase;
    letter-spacing:0.08em; color:var(--signal); margin-bottom:8px;
  }
  .info-block p, .info-block a{ font-size:15px; color:var(--slate-text); }
  .info-block a:hover{ color:var(--signal); }
  .contact-direct{
    background:#fff; border:1px solid #DAD5C7; border-radius:10px;
    padding:22px 24px;
  }
  .contact-direct p{margin-top:8px;line-height:1.55;}
  .contact-direct strong{color:var(--ink);}

  /* ---------- FOOTER ---------- */
  footer{
    background:var(--ink); color:var(--steel); padding:56px 24px 28px;
    border-top:1px solid var(--ink-border);
  }
  footer .wrap{
    display:grid; grid-template-columns:1.4fr repeat(3,1fr); gap:40px;
    padding-bottom:36px; border-bottom:1px solid var(--ink-border);
  }
  footer h5{
    font-family:var(--font-mono); font-size:12px; color:#fff;
    text-transform:uppercase; letter-spacing:0.08em; margin-bottom:16px;
  }
  footer ul{ display:flex; flex-direction:column; gap:10px; }
  footer a{ font-size:13.5px; color:var(--steel); }
  footer a:hover{ color:var(--signal-bright); }
  footer p.tag{ font-size:13.5px; color:var(--steel); max-width:32ch; margin-top:14px; }
  footer p.footer-contact{font-size:12.5px;color:var(--steel);line-height:1.65;margin-top:16px;}
  footer p.footer-contact a{font-size:12.5px;color:var(--steel);}
  .footer-bottom{
    max-width:var(--max-w); margin:0 auto; padding-top:22px;
    display:flex; justify-content:space-between; flex-wrap:wrap; gap:12px;
    font-size:12.5px; color:#5B7288;
  }

  /* ---------- RESPONSIVE ---------- */
  @media (max-width: 900px){
    .nav-links{ display:none; }
    .mobile-logins{display:flex;}
    .nav-toggle{ display:block; }
    .hero .wrap{ grid-template-columns:1fr; }
    .platform-grid{ grid-template-columns:repeat(2,1fr); }
    .feature-grid{ grid-template-columns:1fr; }
    .callout{ grid-template-columns:1fr; }
    .family-grid{ grid-template-columns:1fr; }
    .stats-strip .wrap{ grid-template-columns:repeat(2,1fr); }
    .contact-section .wrap{ grid-template-columns:1fr; }
    footer .wrap{ grid-template-columns:1fr 1fr; }
  }
  @media (max-width: 560px){
    .brand{font-size:0;}
    .brand-mark{height:34px;}
    .mobile-logins a{padding:7px 8px;font-size:10px;}
    .platform-grid{ grid-template-columns:1fr; }
    .stats-strip .wrap{ grid-template-columns:1fr 1fr; }
    footer .wrap{ grid-template-columns:1fr; }
    section{ padding:64px 20px; }
  }

  /* ================= PRODUCT PAGE SHARED STYLES ================= */
  .breadcrumb{
    font-family:var(--font-mono); font-size:12px; color:var(--steel);
    letter-spacing:0.04em; margin-bottom:22px;
  }
  .breadcrumb a{ color:var(--steel); }
  .breadcrumb a:hover{ color:var(--signal-bright); }

  .product-hero{
    background:var(--ink); color:#fff;
    padding:64px 24px 88px;
    border-bottom:1px solid var(--ink-border);
  }
  .product-hero .wrap{
    display:grid; grid-template-columns:1fr 1fr; gap:56px; align-items:center;
  }
  .product-hero h1{ font-size:clamp(30px,4vw,46px); color:#fff; margin-bottom:18px; line-height:1.1; }
  .product-hero p.lede{ font-size:16.5px; color:var(--steel); max-width:48ch; margin-bottom:30px; }
  .product-media{
    border-radius:14px; overflow:hidden;
    border:1px solid var(--ink-border);
    background:linear-gradient(155deg, #0E1B2C, #16283F);
  }
  .product-media img{ width:100%; height:100%; object-fit:cover; display:block; }

  .quote-block{
    border-left:3px solid var(--signal);
    padding:18px 24px; margin:36px 0;
    background:var(--ink-2); border-radius:0 8px 8px 0;
  }
  .quote-block p{ color:#DCE4EA; font-size:15.5px; font-style:italic; margin-bottom:8px; }
  .quote-block cite{ font-family:var(--font-mono); font-size:12px; color:var(--signal); font-style:normal; }

  .spec-grid{
    display:grid; grid-template-columns:1fr 1fr; gap:20px;
  }
  .spec-panel{
    background:#fff; border:1px solid #E2DED3; border-radius:10px; padding:30px;
  }
  .spec-panel h3{ font-size:17px; color:var(--ink); margin-bottom:18px; }
  .spec-panel ul{ display:flex; flex-direction:column; gap:12px; }
  .spec-panel li{
    font-size:14px; color:#3B4653; padding-left:20px; position:relative;
  }
  .spec-panel li::before{
    content:"✓"; position:absolute; left:0; top:0;
    color:var(--signal); font-weight:700; font-size:13px;
  }

  .process-row{
    display:grid; grid-template-columns:repeat(4,1fr); gap:20px;
  }
  .process-item{
    background:var(--ink-2); border:1px solid var(--ink-border); border-radius:10px; padding:26px;
  }
  .process-item .step-index{ background:var(--ink); border-color:var(--ink-border); color:var(--signal); }
  .process-item h4{ color:#fff; font-size:15px; margin:14px 0 8px; }
  .process-item p{ color:var(--steel); font-size:13.5px; }

  .brochure-cta{
    display:flex; align-items:center; justify-content:space-between; gap:24px; flex-wrap:wrap;
    background:var(--ink-2); border:1px solid var(--ink-border); border-radius:12px;
    padding:30px 34px; margin-top:20px;
  }
  .brochure-cta h4{ color:#fff; font-size:16.5px; margin-bottom:6px; }
  .brochure-cta p{ color:var(--steel); font-size:13.5px; }

  .related-strip{
    display:grid; grid-template-columns:repeat(3,1fr); gap:20px;
  }

  @media (max-width: 900px){
    .product-hero .wrap{ grid-template-columns:1fr; }
    .spec-grid{ grid-template-columns:1fr; }
    .process-row{ grid-template-columns:repeat(2,1fr); }
    .related-strip{ grid-template-columns:1fr; }
  }