:root{color-scheme:dark}
:root{
  --bg:#050d1f; --bg2:#0a1a3a; --card:#0d2148; --card2:#112a5c; --line:rgba(120,170,255,.18);
  --text:#eaf1ff; --muted:#9db3d9; --brand:#2f8cff; --brand2:#5fd0ff; --accent:#2f8cff;
  --radius:18px; --max:1120px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--brand2);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}

/* header */
header.site{position:sticky;top:0;z-index:50;background:rgba(5,13,31,.82);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:.5px;color:#fff}
.logo:hover{text-decoration:none}
.logo .mark{width:34px;height:34px;border-radius:50%;border:3px solid #cfe3ff;display:grid;place-items:center;font-size:12px;font-weight:900;color:#cfe3ff}
.logo small{display:block;font-weight:500;font-size:10px;letter-spacing:3px;color:var(--muted);margin-top:-4px}
nav.main{display:flex;gap:4px;align-items:center}
nav.main a{color:var(--muted);padding:8px 12px;border-radius:10px;font-size:15px}
nav.main a:hover{color:#fff;background:rgba(255,255,255,.06);text-decoration:none}
nav.main a.active{color:#fff}
.menu-btn{display:none;background:none;border:1px solid var(--line);color:#fff;border-radius:10px;padding:8px 12px;font-size:18px;cursor:pointer}
@media(max-width:860px){
  .menu-btn{display:block}
  nav.main{display:none;position:absolute;top:64px;left:0;right:0;flex-direction:column;align-items:stretch;background:var(--bg2);padding:12px 20px;border-bottom:1px solid var(--line)}
  nav.main.open{display:flex}
}

/* hero */
.hero{padding:64px 0 40px;background:radial-gradient(1000px 500px at 80% -10%,rgba(47,140,255,.28),transparent 60%),radial-gradient(800px 400px at 0% 0%,rgba(95,208,255,.12),transparent 60%)}
.hero .tag{display:inline-block;font-size:13px;letter-spacing:1.5px;text-transform:uppercase;color:var(--brand2);border:1px solid var(--line);padding:5px 12px;border-radius:999px;margin-bottom:18px}
.hero h1{font-size:clamp(34px,6vw,58px);line-height:1.08;font-weight:850;letter-spacing:-1px;max-width:780px}
.hero h1 span{color:var(--accent)}
.hero p.lead{font-size:clamp(17px,2.2vw,21px);color:var(--muted);max-width:680px;margin-top:18px}
.cta-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 22px;border-radius:14px;font-weight:700;font-size:16px;border:1px solid transparent;cursor:pointer;transition:transform .15s,background .15s}
.btn:hover{transform:translateY(-2px);text-decoration:none}
.btn.primary{background:var(--accent);color:#fff;box-shadow:0 8px 24px -8px var(--accent)}
.btn.ghost{background:rgba(255,255,255,.05);color:#fff;border-color:var(--line)}
.btn.wa{background:#25d366;color:#05230f}
.banner{margin-top:44px;border-radius:24px;overflow:hidden;border:1px solid var(--line);box-shadow:0 30px 80px -30px rgba(0,0,0,.8)}
.banner img{width:100%;height:auto}

/* sections */
section{padding:64px 0}
section.alt{background:var(--bg2)}
.sec-title{font-size:clamp(26px,4vw,38px);font-weight:800;letter-spacing:-.5px;margin-bottom:10px}
.sec-sub{color:var(--muted);max-width:680px;margin-bottom:34px;font-size:18px}
.grid{display:grid;gap:18px}
.grid.cols-3{grid-template-columns:repeat(3,1fr)}
.grid.cols-2{grid-template-columns:repeat(2,1fr)}
@media(max-width:900px){.grid.cols-3{grid-template-columns:1fr 1fr}}
@media(max-width:640px){.grid.cols-3,.grid.cols-2{grid-template-columns:1fr}}
.card{background:linear-gradient(160deg,var(--card),var(--bg2));border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.card .ico{font-size:30px;margin-bottom:10px}
.card h3{font-size:19px;margin-bottom:6px}
.card p{color:var(--muted);font-size:15.5px}

/* product cards (home) */
.prod{display:flex;flex-direction:column;overflow:hidden;padding:0;transition:transform .2s,border-color .2s}
.prod:hover{transform:translateY(-4px);border-color:var(--accent)}
.prod .thumb{aspect-ratio:16/8;background:#000;overflow:hidden}
.prod .thumb img{width:100%;height:100%;object-fit:cover}
.prod .thumb.square img{object-fit:contain;padding:10px}
.prod .body{padding:22px;display:flex;flex-direction:column;gap:8px;flex:1}
.prod .kind{font-size:12px;letter-spacing:1.5px;text-transform:uppercase;color:var(--brand2)}
.prod h3{font-size:21px}
.prod p{color:var(--muted);font-size:15.5px;flex:1}
.prod .more{font-weight:700;margin-top:6px}

/* steps */
.steps{counter-reset:s;display:grid;gap:14px}
.steps li{list-style:none;counter-increment:s;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px 18px 16px 62px;position:relative}
.steps li::before{content:counter(s);position:absolute;left:16px;top:50%;transform:translateY(-50%);width:32px;height:32px;border-radius:50%;background:var(--accent);color:#fff;display:grid;place-items:center;font-weight:800}
.two{display:grid;grid-template-columns:1fr 1fr;gap:24px}
@media(max-width:760px){.two{grid-template-columns:1fr}}

.note{border-left:4px solid var(--accent);background:rgba(255,255,255,.04);padding:14px 18px;border-radius:0 12px 12px 0;color:var(--muted);font-size:15px}
.badge{display:inline-block;font-size:12px;padding:4px 10px;border-radius:999px;background:rgba(47,140,255,.15);color:var(--brand2);margin:0 6px 6px 0;border:1px solid var(--line)}
.circle-img{width:min(320px,70vw);border-radius:50%;border:4px solid #fff;box-shadow:0 20px 60px -20px rgba(0,0,0,.8)}
.center{text-align:center}

/* footer */
footer.site{border-top:1px solid var(--line);padding:40px 0;background:#030813;color:var(--muted);font-size:14.5px}
footer.site .cols{display:grid;grid-template-columns:2fr 1fr 1fr;gap:28px}
@media(max-width:760px){footer.site .cols{grid-template-columns:1fr}}
footer.site h4{color:#fff;margin-bottom:10px;font-size:15px}
footer.site a{color:var(--muted);display:block;padding:3px 0}
footer.site a:hover{color:#fff}
.copy{margin-top:28px;padding-top:18px;border-top:1px solid var(--line);font-size:13.5px}
.logo .mark-img{width:40px;height:40px;object-fit:contain}