:root{
  --bg-deep:#06070a;         /* deep black/tech */
  --bg-alt:#071428;          /* alternative deep-blue */
  --card:#0b1116;
  --led:#00d4ff;
  --led-2:#33e0ff;
  --accent:#58a6ff;
  --muted:#9aa7b4;
  --glass: rgba(255,255,255,0.04);
  --radius:18px;
  --shadow-dark: 0 20px 60px rgba(2,6,23,0.6);
  --text:#e9f2f8;
  --soft-glow: 0 6px 40px rgba(0,212,255,0.06);

  /* LED color accents for pricing (green, blue, orange) */
  --led-green: #3CFF84;
  --led-blue:  #00D4FF;
  --led-orange:#FFB24D;

  font-synthesis: none;
}

*{box-sizing:border-box}
html,body{
  height:100%;
  margin:0;
  background: linear-gradient(180deg,var(--bg-deep), rgba(7,20,40,0.8));
  color:var(--text);
  font-family: "Inter", "Segoe UI", Roboto, system-ui, -apple-system, "Helvetica Neue", Arial;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  -webkit-touch-callout:none;
  overflow-x:hidden;
}

/* Particles canvas base */
.bg-particles{
  position:fixed;
  inset:0;
  width:100%;
  height:100%;
  z-index:0;
  pointer-events:none;
  mix-blend-mode:screen;
  opacity:0.48;
  transition:opacity .6s ease;
}

/* Header base */
.header{
  width:100%;
  padding:18px 28px;
  display:flex;
  justify-content:center;
  position:sticky;
  top:0;
  backdrop-filter: blur(8px) saturate(120%);
  z-index:30;
  background: linear-gradient(180deg, rgba(6,7,10,0.6), rgba(6,7,10,0.35));
  border-bottom: 1px solid rgba(255,255,255,0.03);
}
.header-inner{
  width:1100px;
  max-width:94%;
  display:flex;
  gap:20px;
  align-items:center;
  justify-content:space-between;
}
.logo{height:46px; filter: drop-shadow(0 10px 30px rgba(0,212,255,0.08)); mix-blend-mode:screen}
.top-nav{display:flex;gap:18px;align-items:center}
.top-nav a{
  color:var(--led-blue);
  font-weight:600;
  padding:8px 12px;
  border-radius:12px;
  transition:all .28s ease;
  cursor:default;
  letter-spacing:0.02em;
  font-size:14px;

  /* Make underline invisible while keeping link functionality */
  text-decoration: none;
  text-underline-offset: 0;
  -webkit-text-decoration-color: transparent;
  text-decoration-color: transparent;
  border-bottom: none;
  background-image: none;
}
.top-nav a:hover{color:var(--text); text-shadow:0 0 18px rgba(0,212,255,0.08); transform:translateY(-2px)}