:root{
  --bg:#0b0f16;
  --panel:#0f172a;
  --panel2:#111827;
  --text:#e5e7eb;
  --muted:#a3aab6;
  --line:rgba(255,255,255,.12);
  --accent:#66a6ff; /* cool engineering blue */
  --accent2:#9ae6b4; /* subtle green for highlights */
  --shadow: 0 16px 40px rgba(0,0,0,.35);
  --radius: 18px;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color:var(--text);
  background:
    radial-gradient(1100px 600px at 20% 10%, rgba(102,166,255,.16), transparent 60%),
    radial-gradient(900px 600px at 90% 0%, rgba(154,230,180,.10), transparent 55%),
    var(--bg);
  line-height:1.5;
}

a{color:inherit; text-decoration:none}
code{color:var(--accent); font-weight:700}
.container{width:min(1100px, calc(100% - 40px)); margin:0 auto}

.srOnly{
  position:absolute; width:1px; height:1px; padding:0; margin:-1px;
  overflow:hidden; clip:rect(0,0,0,0); border:0;
}

/* Header */
.header{
  position:sticky; top:0; z-index:50;
  background: rgba(11,15,22,.78);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.header__inner{
  display:flex; align-items:center; justify-content:space-between;
  padding:14px 0;
}

.brand{display:flex; align-items:center; gap:12px}
.brand__logo{width:40px; height:40px}
.brand__text{display:flex; flex-direction:column; line-height:1.05}
.brand__name{font-weight:800; letter-spacing:.08em}
.brand__sub{color:var(--muted); font-weight:700; font-size:.82rem; letter-spacing:.22em}

.nav{display:flex; gap:18px; align-items:center}
.nav a{color:var(--muted); font-weight:700}
.nav a:hover{color:var(--text)}

.navToggle{
  display:none;
  border:1px solid var(--line);
  background: rgba(255,255,255,.04);
  border-radius: 12px;
  width:44px; height:44px;
}
.hamburger{
  display:block; width:18px; height:2px; background: var(--text);
  margin:0 auto; position:relative;
}
.hamburger::before,.hamburger::after{
  content:""; position:absolute; left:0; width:18px; height:2px; background:var(--text);
}
.hamburger::before{top:-6px}
.hamburger::after{top:6px}

/* Buttons */
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding:12px 16px;
  border-radius: 999px;
  border:1px solid rgba(102,166,255,.35);
  background: rgba(102,166,255,.15);
  color:var(--text);
  font-weight:800;
  box-shadow: 0 8px 22px rgba(102,166,255,.10);
  cursor:pointer;
}
.btn:hover{transform: translateY(-1px)}
.btn:active{transform: translateY(0)}
.btn--small{padding:10px 14px; font-size:.92rem}
.btn--ghost{
  border:1px solid var(--line);
  background: rgba(255,255,255,.04);
  box-shadow:none;
}

/* Hero */
.hero{padding:56px 0 24px}
.hero__inner{
  display:grid;
  grid-template-columns: 1.15fr .85fr;
  gap:18px;
  align-items:stretch;
}

.kicker{
  margin:0 0 10px;
  color: var(--accent2);
  font-weight:800;
  letter-spacing:.03em;
  text-transform:uppercase;
  font-size:.92rem;
}
.hero h1{
  margin:0 0 12px;
  font-size: clamp(2rem, 3.2vw, 3.1rem);
  line-height:1.1;
}
.subhead{margin:0 0 18px; color:var(--muted); font-size:1.05rem}
.ctaRow{display:flex; gap:12px; flex-wrap:wrap; margin-bottom:16px}
.badges{display:flex; gap:10px; flex-wrap:wrap; color:var(--muted); font-weight:700; font-size:.95rem}
.badges span{
  border:1px solid var(--line);
  background: rgba(255,255,255,.03);
  padding:8px 10px;
  border-radius: 999px;
}

/* Panel */
.hero__panel{
  border:1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(17,24,39,.70), rgba(15,23,42,.72));
  box-shadow: var(--shadow);
  overflow:hidden;
}
.panel__top{
  display:flex; align-items:center; justify-content:space-between;
  padding:14px 16px;
  border-bottom:1px solid var(--line);
}
.pill{
  font-size:.9rem;
  padding:6px 10px;
  border-radius: 999px;
  border:1px solid var(--line);
  background: rgba(255,255,255,.04);
  color: var(--muted);
  font-weight:800;
}
.dots span{
  display:inline-block; width:8px; height:8px; border-radius:50%;
  background: rgba(255,255,255,.18); margin-left:6px;
}
.panel__body{padding:16px}
.panel__note{
  margin-top:14px;
  border:1px solid var(--line);
  background: rgba(255,255,255,.03);
  border-radius: 14px;
  padding:12px;
  color:var(--muted);
}
.metricGrid{display:grid; grid-template-columns:repeat(2,1fr); gap:10px}
.metric{
  border:1px solid var(--line);
  background: rgba(255,255,255,.03);
  border-radius: 14px;
  padding:10px 12px;
}
.metric__label{color:var(--muted); font-weight:800; font-size:.9rem}
.metric__value{font-weight:900; font-size:1.02rem}

.inlineForm{
  margin-top:12px;
  display:flex;
  gap:10px;
  align-items:center;
}
.inlineForm input{
  flex:1;
}
.formMsg{margin-top:10px; color:var(--muted); font-weight:700}

/* Sections */
.section{padding:56px 0}
.section--alt{
  background: rgba(255,255,255,.02);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.section__head{margin-bottom:18px}
.section__head h2{margin:0 0 6px; font-size:1.65rem}
.section__head p{margin:0; color:var(--muted)}

.grid2{display:grid; grid-template-columns:repeat(2,1fr); gap:14px}
.grid3{display:grid; grid-template-columns:repeat(3,1fr); gap:14px}

.card{
  border:1px solid var(--line);
  background: rgba(17,24,39,.55);
  border-radius: var(--radius);
  padding:16px;
  box-shadow: 0 10px 24px rgba(0,0,0,.18);
}
.card h3{margin:0 0 8px}
.card p{margin:0 0 10px; color:var(--muted)}
.list{margin:0; padding-left:18px; color:var(--muted)}
.list li{margin:6px 0}

/* Products */
.product{
  border:1px solid var(--line);
  background: rgba(17,24,39,.60);
  border-radius: var(--radius);
  padding:16px;
  box-shadow: 0 10px 24px rgba(0,0,0,.18);
}
.product__top{
  display:flex; align-items:center; justify-content:space-between;
  margin-bottom:10px;
}
.tag{
  border:1px solid rgba(154,230,180,.25);
  background: rgba(154,230,180,.08);
  color: var(--accent2);
  font-weight:900;
  font-size:.82rem;
  padding:6px 10px;
  border-radius:999px;
}
.sku{color:var(--muted); font-weight:800; letter-spacing:.12em; font-size:.82rem}
.product h3{margin:0 0 8px}
.product p{margin:0 0 12px; color:var(--muted)}
.specGrid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:10px;
  margin-bottom:12px;
}
.specGrid div{
  border:1px solid var(--line);
  background: rgba(255,255,255,.03);
  border-radius: 14px;
  padding:10px;
}
.specGrid span{display:block; color:var(--muted); font-weight:800; font-size:.85rem}
.specGrid strong{display:block; font-weight:900}
.link{color:var(--accent); font-weight:900}

/* Forms */
label{display:grid; gap:8px; font-weight:900}
input, textarea, select{
  width:100%;
  padding:12px 12px;
  border-radius: 14px;
  border:1px solid var(--line);
  background: rgba(0,0,0,.22);
  color: var(--text);
  outline:none;
  font-family: inherit;
  font-weight:600;
}
input:focus, textarea:focus, select:focus{border-color: rgba(102,166,255,.6)}
.formRow{display:flex; gap:14px; align-items:center; margin-top:12px}
.muted{color:var(--muted)}

/* Footer */
.footer{padding:26px 0}
.footer__inner{
  display:flex; align-items:center; justify-content:space-between;
  border-top:1px solid var(--line);
  padding-top:18px;
  color:var(--muted);
  gap:16px;
}
.footer__left{display:flex; align-items:center; gap:12px}
.footer__logo{width:28px; height:28px; opacity:.9}
.footer__brand{color:var(--text); font-weight:900}
.footer__muted{color:var(--muted); font-weight:700}
.footer__right{display:flex; gap:14px; align-items:center}

/* Mobile */
@media (max-width: 900px){
  .hero__inner{grid-template-columns:1fr}
  .grid2{grid-template-columns:1fr}
  .grid3{grid-template-columns:1fr}
  .specGrid{grid-template-columns:1fr}
  .inlineForm{flex-direction:column; align-items:stretch}

  .navToggle{display:inline-flex; align-items:center; justify-content:center}
  .nav{
    position:absolute;
    right:20px;
    top:68px;
    flex-direction:column;
    align-items:stretch;
    gap:10px;
    padding:12px;
    border:1px solid var(--line);
    background: rgba(11,15,22,.95);
    border-radius: 16px;
    width:min(260px, calc(100vw - 40px));
    display:none;
  }
  .nav.open{display:flex}
}