:root{
  --bg:#0f141a;
  --panel:#151c24;
  --text:#e7eef5;
  --muted:#a1b2c3;
  --brand:#00d1b2;
  --line:#263241;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font:16px/1.6 system-ui,Segoe UI,Roboto,Arial,sans-serif}
img{max-width:100%;height:auto;display:block}
.container{max-width:1080px;margin:0 auto;padding:0 20px}
.site-header{position:sticky;top:0;z-index:50;background:rgba(15,20,26,.8);backdrop-filter:saturate(120%) blur(8px);border-bottom:1px solid var(--line)}
.site-header .nav{display:flex;align-items:center;justify-content:space-between;padding:12px 0}
.logo img{width:44px;height:44px;border-radius:8px}
nav a{margin:0 10px;text-decoration:none;color:var(--text);opacity:.9}
nav a.btn{margin-left:18px}
.hero{padding:92px 0 56px;background:radial-gradient(1200px 600px at 70% -150px, rgba(0,209,178,.15), transparent)}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.hero-image img{width:320px;max-width:100%;filter:drop-shadow(0 0 20px rgba(0,209,178,.3));border-radius:20px}
.hero h1{font-size:44px;line-height:1.15;margin:0 0 10px}
.hero p{max-width:720px;color:var(--muted);margin:0 0 20px}
.cta-row{display:flex;gap:12px;margin:18px 0 10px}
.badges{display:flex;gap:10px;flex-wrap:wrap;list-style:none;padding:0;margin:18px 0 0}
.badges li{padding:6px 10px;border:1px solid var(--line);border-radius:999px;color:#d5e6f8}

.features{padding:64px 0;border-top:1px solid var(--line)}
.grid-3{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px}
.features article{background:var(--panel);padding:18px;border:1px solid var(--line);border-radius:12px}

.band{padding:64px 0;border-top:1px solid var(--line)}
.cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px;align-items:center}
.checklist{list-style:none;padding:0;margin:16px 0 0}
.checklist li{padding-left:26px;position:relative}
.checklist li::before{content:'✓';position:absolute;left:0;color:var(--brand)}

.pricing{padding:64px 0;border-top:1px solid var(--line)}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px}
.card{background:var(--panel);padding:20px;border:1px solid var(--line);border-radius:16px}
.card.featured{border-color:var(--brand);box-shadow:0 0 0 2px rgba(0,209,178,.25) inset}
.price{font-size:36px;margin:8px 0}
.price span{font-size:14px;color:var(--muted)}
.install{color:var(--muted);font-size:14px}
.note{margin-top:12px;color:var(--muted)}

.gov{padding:64px 0;border-top:1px solid var(--line)}
.faq{padding:64px 0;border-top:1px solid var(--line)}
details{background:var(--panel);padding:14px 16px;border:1px solid var(--line);border-radius:12px;margin:10px 0}
summary{cursor:pointer;font-weight:600}

.contact{padding:64px 0;border-top:1px solid var(--line)}
.contact .card{background:var(--panel)}
input,textarea{width:100%;padding:10px 12px;border-radius:10px;border:1px solid var(--line);background:#0c1117;color:var(--text);margin:6px 0 14px}
label{font-size:14px;color:var(--muted)}
.btn{display:inline-block;padding:10px 16px;border-radius:10px;border:1px solid var(--line);background:#111825;color:var(--text);text-decoration:none}
.btn.primary{background:var(--brand);color:#0b0f14;border-color:transparent}
.btn.ghost{background:transparent}
.btn:hover{opacity:.95}
.small-link{color:var(--muted)}

.site-footer{border-top:1px solid var(--line);padding:24px 0;background:#0b0f14}

dialog{border:none;border-radius:12px;padding:18px;max-width:560px}
dialog::backdrop{background:rgba(0,0,0,.6)}
@media (max-width:900px){
  .hero-grid{grid-template-columns:1fr}
  .hero-image img{margin:20px auto 0;width:200px}
  .hero h1{font-size:34px}
  nav a{display:none}
  nav a.btn{display:inline-block}
}