:root{
  --bg: #0a0f14;
  --card: #0f1620;
  --text: #e6f3ff;
  --muted: #9db3c7;
  --primary: #00e6ff;
  --accent: #7cf7d4;
  --glow: 0 0 30px rgba(0,230,255,.35), 0 0 60px rgba(0,230,255,.15);
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: radial-gradient(1200px 800px at 80% -10%, rgba(0,230,255,.12), transparent 60%),
              radial-gradient(900px 600px at 10% 110%, rgba(124,247,212,.10), transparent 60%),
              var(--bg);
  color: var(--text);
  line-height: 1.6;
}

.container{width:min(1120px, 92%); margin:0 auto}

/* Header */
.site-header{
  position:sticky; top:0; z-index:50;
  background: linear-gradient(180deg, rgba(10,15,20,.9), rgba(10,15,20,.65));
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.header-inner{display:flex; align-items:center; justify-content:space-between; padding:14px 0}
.brand{display:flex; align-items:center; gap:10px; text-decoration:none; color:var(--text)}
.brand-logo{width:36px; height:36px; object-fit:contain; filter: drop-shadow(0 2px 8px rgba(0,230,255,.25))}
.brand-name{font-weight:800; letter-spacing:.5px}
.site-nav{display:flex; gap:22px}
.site-nav a{color:var(--muted); text-decoration:none; font-weight:600}
.site-nav a:hover{color:var(--text)}
.nav-toggle{display:none; background:none; border:0; width:40px; height:40px}
.nav-toggle span{display:block; width:24px; height:2px; background:#cfe8ff; margin:5px auto; transition:.2s}

/* Hero */
.hero{
  position:relative;
  background: #071018;
  min-height: 68vh;
  display:grid; place-items:center;
  isolation:isolate;
}
.hero::before{
  content:""; position:absolute; inset:0;
  background: center/cover no-repeat var(--hero-bg);
  opacity:.18; z-index:-2;
}
.hero-overlay{
  position:absolute; inset:0;
  background: radial-gradient(1000px 600px at 40% 30%, rgba(0,230,255,.15), transparent 60%);
  z-index:-1;
}
.hero-inner{padding:72px 0; text-align:center}
.hero-logo{width:84px; height:84px; object-fit:contain; margin-bottom:16px; filter: drop-shadow(var(--glow))}
.hero h1{font-size: clamp(28px, 4vw, 44px); margin:10px 0 12px; line-height:1.15}
.subtitle{color:var(--muted); max-width:840px; margin:0 auto 24px}
.hero-cta{display:flex; gap:14px; justify-content:center}
.btn{display:inline-flex; align-items:center; justify-content:center; padding:12px 18px; border-radius:10px; text-decoration:none; font-weight:700}
.btn.primary{background: linear-gradient(90deg, var(--primary), #57fff1); color:#041016; box-shadow: var(--glow)}
.btn.ghost{border:1px solid rgba(255,255,255,.16); color:var(--text); background: rgba(255,255,255,.02)}
.btn.ghost:hover{border-color: rgba(255,255,255,.32)}

/* Sections */
.section{padding:64px 0}
.section h2{font-size: clamp(22px, 3.2vw, 32px); margin:0 0 24px}

/* Features grid */
.feature-grid{display:grid; grid-template-columns: repeat(3, 1fr); gap:16px; padding:0; list-style:none}
.feature-grid li{
  background: linear-gradient(180deg, rgba(255,255,255,.02), transparent);
  border: 1px solid rgba(255,255,255,.08);
  border-radius:14px; padding:18px;
}
.feature-grid h3{margin:0 0 6px; font-size:18px}
.feature-grid p{margin:0; color:var(--muted)}

/* Screens grid */
.screens{background: radial-gradient(900px 600px at 10% 10%, rgba(0,230,255,.08), transparent 60%)}
.screen-grid{display:grid; grid-template-columns: repeat(4, 1fr); gap:14px}
.screen-grid figure{margin:0; background: #061018; border:1px solid rgba(255,255,255,.08); border-radius:14px; overflow:hidden}
.screen-grid img{width:100%; height:100%; display:block; object-fit:cover; transform: translateZ(0); transition: transform .25s ease}
.screen-grid figure:hover img{transform: scale(1.03)}

/* Use-cases */
.pill-list{display:flex; flex-wrap:wrap; gap:10px; padding:0; list-style:none}
.pill-list li{background: rgba(255,255,255,.04); border:1px solid rgba(255,255,255,.08); padding:10px 14px; border-radius:999px; color:var(--muted)}

/* Privacy */
.checklist{padding-left:18px}
.checklist li{margin:6px 0}
.note{color:var(--muted)}

/* Footer */
.site-footer{padding:28px 0; border-top:1px solid rgba(255,255,255,.08); color:#cfd8e3; text-align:center; background: rgba(0,0,0,.2); font-size:12px}

/* Responsive */
@media (max-width: 980px){
  .feature-grid{grid-template-columns: repeat(2, 1fr)}
  .screen-grid{grid-template-columns: repeat(3, 1fr)}
}
@media (max-width: 720px){
  .site-nav{position:fixed; right:16px; top:64px; background: rgba(10,15,20,.95); border:1px solid rgba(255,255,255,.08); border-radius:10px; padding:10px; display:none; flex-direction:column}
  .site-nav.open{display:flex}
  .nav-toggle{display:inline-block}
  .feature-grid{grid-template-columns: 1fr}
  .screen-grid{grid-template-columns: repeat(2, 1fr)}
}
@media (max-width: 460px){
  .screen-grid{grid-template-columns: 1fr}
}