:root{
  --bg:#000000;
  --panel:#000000;
  --card:#000000;
  --text:#e7ecf3;
  --muted:#9aa4b2;
  --brand:#a9f5ed;
  --brand-2:#b8deda;
  --accent:#c2ffff;
  --radius:16px;
  --radius-lg:22px;
  --shadow:0 6px 28px rgba(0,0,0,.35);
}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--text);font:16px/1.65 system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Cantarell,Noto Sans,sans-serif}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:1100px;margin:auto;padding:0 20px}
.site-header{position:sticky;top:0;background:linear-gradient(180deg, rgba(0,0,0,.6), rgba(0,0,0,.25) 70%, rgba(0,0,0,0));backdrop-filter:saturate(140%) blur(8px);z-index:50}
.header-grid{display:grid;grid-template-columns:auto 1fr auto;gap:16px;align-items:center;padding:16px 0}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:700}
.brand img{width:28px;height:28px}
.burger{display:none;font-size:28px;cursor:pointer}
#nav-toggle{display:none}
.site-nav{display:flex;gap:18px;align-items:center}
.site-nav a{padding:.5rem .75rem;border-radius:999px}
.site-nav a.btn{background:var(--brand);color:#051225;box-shadow:var(--shadow)}
.site-nav a.active{color:var(--brand-2)}
@media (max-width:840px){
  .burger{display:block}
  .site-nav{position:absolute;top:64px;right:20px;background:var(--panel);padding:12px;border-radius:var(--radius);box-shadow:var(--shadow);display:none;flex-direction:column;min-width:200px}
  #nav-toggle:checked ~ .site-nav{display:flex}
}
.hero{padding:120px 0;background-image:linear-gradient(180deg, rgba(0,0,0,.55), rgba(0,0,0,.75)), url('/img/hero-bg.jpg');background-size:cover;background-position:center;border-bottom:1px solid #1f2530}
.hero h1{font-size:clamp(30px, 4vw, 56px);line-height:1.1;margin:0 0 12px}
.hero p{color:var(--muted);max-width:700px;margin:0 0 24px}
.btn{display:inline-block;padding:.75rem 1rem;border-radius:999px;background:var(--brand);color:#051225;font-weight:700;border:0;cursor:pointer}
.btn-secondary{background:var(--card);color:var(--text);outline:1px solid #252b36}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap}
.section{padding:48px 0}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.card{background:var(--card);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow);border:1px solid #1f2530}
.card h3{margin:.25rem 0 .5rem}
.strip{background:linear-gradient(90deg, rgba(79,140,255,.12), rgba(124,243,224,.12));padding:28px 0;margin:24px 0;border-top:1px solid #1f2530;border-bottom:1px solid #1f2530}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.site-footer{padding:28px 0;border-top:1px solid #1f2530;margin-top:32px}
.footer-grid{display:grid;grid-template-columns:1fr auto;align-items:center;gap:16px}
.footer-nav{display:flex;gap:18px;flex-wrap:wrap}
.muted{color:var(--muted)}
.small{font-size:.9rem}
.checklist{list-style:none;padding:0;margin-left:0}
.checklist li{padding-left:28px;position:relative;margin:8px 0}
.checklist li::before{content:"✓";position:absolute;left:0;top:0;color:var(--brand-2)}
.products{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.product{background:var(--card);border:1px solid #1f2530;border-radius:var(--radius);padding:16px;box-shadow:var(--shadow)}
.contact-form{display:grid;gap:12px;max-width:720px}
.contact-form label{display:grid;gap:8px}
.contact-form input, .contact-form textarea{background:#0f131a;border:1px solid #1f2530;border-radius:10px;color:var(--text);padding:.8rem}
.contact-form input:focus, .contact-form textarea:focus{outline:2px solid var(--brand);border-color:transparent}
.login-card{max-width:520px;background:var(--card);border:1px solid #1f2530;border-radius:var(--radius);padding:18px;box-shadow:var(--shadow)}
@media (max-width:900px){
  .cards{grid-template-columns:1fr}
  .products{grid-template-columns:1fr}
  .grid2{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
}