:root{
    --navy-deep:#0a2e4b;
    --navy-darker:#0d1926;
    --navy-mid:#0d4169;
    --amber:#f5a624;
    --amber-dark:#e0921a;
    --cyan:#29b9e5;
    --teal-logo:#124c64;
    --white:#ffffff;
    --ink:#0d1926;
    --body-text:#cfe0ee;
    --body-text-dim:#9fb6c9;
    --line:rgba(255,255,255,0.12);
  }
  *{box-sizing:border-box;margin:0;padding:0;}
  html{scroll-behavior:smooth;}
  body{
    font-family:'Inter',sans-serif;
    background:var(--navy-deep);
    color:var(--body-text);
    line-height:1.6;
  }
  h1,h2,h3,.brand-word{
    font-family:'Oswald',sans-serif;
    text-transform:uppercase;
    letter-spacing:0.02em;
  }
  a{text-decoration:none;color:inherit;}
  img{max-width:100%;display:block;}
  .container{max-width:1200px;margin:0 auto;padding:0 32px;}

  /* ===== NAV ===== */
  .site-header{background:var(--white);border-bottom:4px solid var(--amber);position:sticky;top:0;z-index:50;}
  .nav-wrap{max-width:1300px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:14px 32px;}

  /* Logo: image only, pinned to the far left, fixed compact height */
  .logo{display:flex;align-items:center;flex-shrink:0;margin-right:auto;}
  .logo-img{height:60px;width:auto;max-width:none;display:block;}
  .site-header .nav-wrap .logo{align-self:flex-start;}
  footer .footer-grid .logo{align-self:flex-end;}
  footer .logo-img{height:34px;}

  nav.main-nav{display:flex;align-items:center;gap:34px;margin-left:40px;}

  /* Services dropdown */
  nav.main-nav .nav-item.dropdown{position:relative;display:flex;align-items:center;}
  .dropdown-toggle{
    display:flex;
    align-items:center;
    gap:7px;
    cursor:pointer;
    background:none;
    border:none;
    font-family:'Oswald',sans-serif;
    font-weight:600;
    font-size:14px;
    letter-spacing:0.06em;
    color:var(--ink);
    text-transform:uppercase;
    padding:6px 2px;
    border-bottom:3px solid transparent;
  }
  .dropdown-toggle:hover{color:var(--amber-dark);}
  .dropdown-toggle .caret{
    width:7px;height:7px;
    border-right:2px solid currentColor;
    border-bottom:2px solid currentColor;
    transform:rotate(45deg);
    transition:transform .2s ease;
    margin-top:-3px;
  }
  .dropdown-toggle[aria-expanded="true"]{color:var(--amber-dark);border-bottom-color:var(--amber);}
  .dropdown-toggle[aria-expanded="true"] .caret{transform:rotate(-135deg);margin-top:2px;}

  .dropdown-menu{
    position:absolute;
    top:100%;
    left:0;
    margin-top:14px;
    min-width:230px;
    background:var(--white);
    border:1px solid var(--line);
    border-radius:4px;
    box-shadow:0 16px 32px rgba(13,25,38,.18);
    padding:8px 0;
    list-style:none;
    display:none;
    z-index:60;
  }
  .dropdown-menu.show{display:block;}
  .dropdown-menu li{list-style:none;}
  .dropdown-item{
    display:block;
    padding:11px 20px;
    font-family:'Oswald',sans-serif;
    font-weight:500;
    font-size:13px;
    letter-spacing:0.03em;
    text-transform:none;
    color:var(--ink);
  }
  .dropdown-item:hover{background:rgba(245,166,36,.12);color:var(--amber-dark);}
  .dropdown-item.active{color:var(--amber-dark);font-weight:700;background:rgba(245,166,36,.08);}
  nav.main-nav a{
    font-family:'Oswald',sans-serif;
    font-weight:600;
    font-size:14px;
    letter-spacing:0.06em;
    color:var(--ink);
    text-transform:uppercase;
    padding:6px 2px;
    border-bottom:3px solid transparent;
    transition:border-color .2s ease, color .2s ease;
  }
  nav.main-nav a:hover{color:var(--amber-dark);}
  nav.main-nav a.active{color:var(--amber-dark);border-bottom-color:var(--amber);}
  .demo-btn{
    background:var(--amber);
    color:var(--ink);
    font-family:'Oswald',sans-serif;
    font-weight:700;
    font-size:13px;
    letter-spacing:0.08em;
    padding:14px 22px;
    text-transform:uppercase;
    white-space:nowrap;
  }
  .demo-btn:hover{background:var(--amber-dark);}

  /* ===== HERO ===== */
  .hero{
    position:relative;
    background:
      linear-gradient(100deg, rgba(10,18,28,.94) 0%, rgba(10,18,28,.72) 45%, rgba(10,46,75,.55) 100%),
      radial-gradient(circle at 78% 30%, rgba(41,185,229,.18), transparent 55%),
      var(--navy-darker);
    padding:96px 0 0 0;
    overflow:hidden;
    border-bottom:3px solid var(--amber);
  }
  .hero-inner{position:relative;z-index:2;padding-bottom:0;}
  .eyebrow{
    display:inline-block;
    font-family:'Oswald',sans-serif;
    font-size:13px;
    font-weight:600;
    letter-spacing:0.18em;
    color:var(--amber);
    border:1px solid rgba(245,166,36,.5);
    padding:6px 14px;
    border-radius:2px;
    margin-bottom:22px;
  }
  .hero h1{
    font-size:56px;
    font-weight:700;
    color:var(--white);
    line-height:1.06;
    max-width:780px;
  }
  .hero h1 .accent{color:var(--cyan);}
  .hero p.lede{
    margin-top:22px;
    max-width:560px;
    font-size:18px;
    color:var(--body-text);
  }
  .hero-ctas{display:flex;gap:16px;margin-top:34px;flex-wrap:wrap;}
  .btn-primary{
    background:var(--amber);
    color:var(--ink);
    font-family:'Oswald',sans-serif;
    font-weight:700;
    font-size:14px;
    letter-spacing:0.05em;
    text-transform:uppercase;
    padding:16px 28px;
    display:inline-flex;
    align-items:center;
    gap:10px;
  }
  .btn-primary:hover{background:var(--amber-dark);}
  .btn-ghost{
    border:1px solid rgba(255,255,255,.35);
    color:var(--white);
    font-family:'Oswald',sans-serif;
    font-weight:600;
    font-size:14px;
    letter-spacing:0.05em;
    text-transform:uppercase;
    padding:16px 26px;
    display:inline-flex;
    align-items:center;
    gap:10px;
  }
  .btn-ghost:hover{background:rgba(255,255,255,.08);}
  .hero-body{padding:64px 0 0;}

  .stat-band{
    margin-top:64px;
    display:grid;
    grid-template-columns:repeat(3,1fr);
    background:var(--navy-mid);
    border-top:1px solid var(--line);
  }
  .stat-band .stat{
    padding:26px 20px;
    text-align:center;
    border-right:1px solid var(--line);
  }
  .stat-band .stat:last-child{border-right:none;}
  .stat .num{font-family:'Oswald',sans-serif;font-weight:700;font-size:30px;color:var(--amber);}
  .stat .label{font-size:12px;letter-spacing:0.08em;text-transform:uppercase;color:var(--body-text-dim);margin-top:4px;}

  /* ===== SECTIONS ===== */
  section{padding:88px 0;}
  .section-head{max-width:680px;margin-bottom:48px;}
  .section-head .kicker{
    font-family:'Oswald',sans-serif;
    font-size:13px;
    font-weight:600;
    letter-spacing:0.16em;
    color:var(--cyan);
    text-transform:uppercase;
    margin-bottom:12px;
    display:block;
  }
  .section-head h2{font-size:34px;color:var(--white);font-weight:600;}
  .section-head p{margin-top:16px;font-size:16px;color:var(--body-text-dim);}

  .on-white{background:var(--white);color:#33424f;}
  .on-white .section-head h2{color:var(--navy-darker);}
  .on-white .section-head p{color:#5a6b78;}

  /* intro two-col */
  .intro-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center;}
  .intro-grid p{color:var(--body-text);margin-bottom:16px;font-size:16px;}
  .intro-grid .highlight{color:var(--white);font-weight:600;}

  .badge-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px;}
  .badge{
    border:1px solid var(--line);
    padding:8px 14px;
    border-radius:2px;
    font-size:12px;
    letter-spacing:0.06em;
    text-transform:uppercase;
    color:var(--cyan);
    font-family:'Oswald',sans-serif;
    font-weight:600;
  }

  /* diagram card */
  .diagram-card{
    background:var(--navy-darker);
    border:1px solid var(--line);
    border-radius:4px;
    padding:28px;
  }
  .diagram-card svg{width:100%;height:auto;}
  .diagram-caption{font-size:13px;color:var(--body-text-dim);margin-top:14px;text-align:center;}

  /* two-panel comparison */
  .panel-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;}
  .panel{
    background:var(--navy-mid);
    border:1px solid var(--line);
    padding:32px;
    border-radius:4px;
  }
  .panel .tag{
    display:inline-block;
    font-family:'Oswald',sans-serif;
    font-size:11px;
    font-weight:700;
    letter-spacing:0.1em;
    color:var(--ink);
    background:var(--amber);
    padding:4px 10px;
    text-transform:uppercase;
    margin-bottom:16px;
  }
  .panel h3{font-size:20px;color:var(--white);font-weight:600;margin-bottom:12px;}
  .panel p{color:var(--body-text-dim);font-size:15px;}
  .panel svg{width:100%;height:auto;margin-top:20px;}

  /* system layers */
  .layer-track{position:relative;}
  .layer-row{
    display:grid;
    grid-template-columns:220px 1fr;
    gap:32px;
    padding:30px 0;
    border-top:1px solid var(--line);
    align-items:start;
  }
  .layer-row:last-child{border-bottom:1px solid var(--line);}
  .layer-label{
    display:flex;
    align-items:flex-start;
    gap:14px;
  }
  .layer-num{
    font-family:'Oswald',sans-serif;
    font-weight:700;
    font-size:14px;
    color:var(--amber);
    border:1px solid var(--amber);
    width:34px;height:34px;
    display:flex;align-items:center;justify-content:center;
    border-radius:2px;
    flex-shrink:0;
  }
  .layer-label h3{font-size:16px;color:var(--white);font-weight:600;letter-spacing:0.02em;}
  .layer-row p{color:var(--body-text-dim);font-size:15px;max-width:640px;}
  .layer-row .apps{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px;}
  .layer-row .apps span{
    font-size:12px;
    color:var(--cyan);
    border:1px solid rgba(41,185,229,.35);
    padding:5px 10px;
    border-radius:2px;
    font-family:'Oswald',sans-serif;
    letter-spacing:0.03em;
  }

  /* CTA form */
  .cta-section{
    background:linear-gradient(135deg, var(--navy-darker), var(--navy-mid));
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
  }
  .cta-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:60px;align-items:start;}
  .cta-grid h2{font-size:32px;color:var(--white);font-weight:600;margin-bottom:14px;}
  .cta-grid p{color:var(--body-text-dim);font-size:16px;margin-bottom:24px;}
  .cta-points{list-style:none;}
  .cta-points li{
    display:flex;gap:10px;align-items:flex-start;
    font-size:14px;color:var(--body-text);
    margin-bottom:12px;
  }
  .cta-points li:before{content:"—";color:var(--amber);font-weight:700;}
  form.contact-form{
    background:var(--navy-deep);
    border:1px solid var(--line);
    border-radius:4px;
    padding:32px;
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:18px;
  }
  form.contact-form .full{grid-column:1/-1;}
  .field label{
    display:block;
    font-size:12px;
    letter-spacing:0.06em;
    text-transform:uppercase;
    color:var(--body-text-dim);
    margin-bottom:8px;
    font-family:'Oswald',sans-serif;
  }
  .field input, .field select, .field textarea{
    width:100%;
    background:var(--navy-darker);
    border:1px solid var(--line);
    color:var(--white);
    padding:12px 14px;
    font-family:'Inter',sans-serif;
    font-size:14px;
    border-radius:2px;
  }
  .field input:focus, .field select:focus, .field textarea:focus{
    outline:2px solid var(--amber);
    outline-offset:1px;
  }
  form.contact-form .btn-primary{
    grid-column:1/-1;
    justify-content:center;
    border:none;
    cursor:pointer;
    font-size:14px;
  }

  /* related */
  .related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
  .related-card{
    border:1px solid var(--line);
    padding:24px;
    border-radius:4px;
  }
  .related-card .k{font-size:11px;color:var(--cyan);letter-spacing:0.1em;text-transform:uppercase;font-family:'Oswald',sans-serif;font-weight:600;}
  .related-card h3{font-size:18px;color:var(--white);margin-top:8px;font-weight:600;}
  .related-card p{font-size:14px;color:var(--body-text-dim);margin-top:8px;}

  /* footer */
  footer{background:var(--white);border-top:3px solid var(--amber);padding:48px 0 24px;}
  .footer-grid{display:flex;justify-content:space-between;align-items:flex-start;flex-wrap:wrap;gap:24px;}
  footer .foot-links{display:flex;gap:28px;flex-wrap:wrap;}
  footer .foot-links a{font-size:13px;color:var(--navy-darker);letter-spacing:0.03em;}
  footer .foot-links a:hover{color:var(--amber);}
  .footer-bottom{margin-top:32px;padding-top:20px;border-top:1px solid var(--navy-darker);font-size:12px;color:var(--navy-darker);text-align:center;}

  /* mobile nav toggle */
  .nav-toggle{
    display:none;
    flex-direction:column;
    gap:5px;
    background:none;
    border:none;
    cursor:pointer;
    padding:6px;
  }
  .nav-toggle span{width:26px;height:3px;background:var(--ink);border-radius:2px;transition:transform .2s ease, opacity .2s ease;}
  .nav-toggle.open span:nth-child(1){transform:translateY(8px) rotate(45deg);}
  .nav-toggle.open span:nth-child(2){opacity:0;}
  .nav-toggle.open span:nth-child(3){transform:translateY(-8px) rotate(-45deg);}

  .form-status{
    grid-column:1/-1;
    font-size:14px;
    padding:12px 14px;
    border-radius:2px;
    display:none;
  }
  .form-status.show{display:block;}
  .form-status.success{background:rgba(41,185,229,.12);border:1px solid var(--cyan);color:var(--cyan);}
  .form-status.error{background:rgba(245,166,36,.12);border:1px solid var(--amber);color:var(--amber);}

  @media (max-width:920px){
    .nav-toggle{display:flex;}
    nav.main-nav{
      display:none;
      position:absolute;
      top:100%;
      left:0;
      right:0;
      background:var(--white);
      flex-direction:column;
      gap:0;
      border-top:1px solid var(--line);
      box-shadow:0 12px 24px rgba(0,0,0,.15);
    }
    nav.main-nav.open{display:flex;}
    nav.main-nav a{padding:16px 32px;border-bottom:1px solid #eee;width:100%;}
    nav.main-nav a.active{border-left:4px solid var(--amber);border-bottom:1px solid #eee;}
    nav.main-nav .nav-item.dropdown{width:100%;flex-direction:column;align-items:stretch;}
    .dropdown-toggle{width:100%;padding:16px 32px;border-bottom:1px solid #eee;justify-content:space-between;}
    .dropdown-menu{
      position:static;
      width:100%;
      margin:0;
      border:none;
      border-radius:0;
      box-shadow:none;
      background:#f7f9fb;
      padding:0;
    }
    .dropdown-item{padding:14px 32px 14px 44px;border-bottom:1px solid #eee;}
    .nav-wrap{position:relative;flex-wrap:wrap;}
    .hero h1{font-size:38px;}
    .intro-grid, .panel-grid, .cta-grid, form.contact-form, .related-grid{grid-template-columns:1fr;}
    .stat-band{grid-template-columns:1fr;}
    .stat-band .stat{border-right:none;border-bottom:1px solid var(--line);}
    .layer-row{grid-template-columns:1fr;}
  }