:root{
  --bg:#070b12;--bg2:#0b121d;--card:#0f1928;--line:#1d2a40;
  --text:#e6edf7;--muted:#93a4bd;--accent:#22d3ee;--accent2:#6366f1;
  --grid:rgba(34,211,238,.06);--shadow:0 10px 40px rgba(0,0,0,.35);
  --radius:16px;--max:1120px;
}
@media (prefers-color-scheme:light){
  :root{--bg:#f6f8fb;--bg2:#eef2f8;--card:#ffffff;--line:#d9e2ee;
    --text:#0c1424;--muted:#52627a;--accent:#0891b2;--accent2:#4f46e5;
    --grid:rgba(8,145,178,.07);--shadow:0 10px 30px rgba(15,30,60,.08)}
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);
  font:16px/1.65 Inter,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  -webkit-font-smoothing:antialiased}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}
h1,h2,h3{line-height:1.2;margin:0 0 .6em;letter-spacing:-.02em}
h1{font-size:clamp(2rem,5vw,3.4rem)}
h2{font-size:clamp(1.5rem,3.2vw,2.2rem)}
h3{font-size:1.15rem}
p{margin:0 0 1em}
.muted{color:var(--muted)}
.grad{background:linear-gradient(90deg,var(--accent),var(--accent2));
  -webkit-background-clip:text;background-clip:text;color:transparent}

/* header */
header.top{position:sticky;top:0;z-index:20;backdrop-filter:blur(12px);
  background:color-mix(in srgb,var(--bg) 82%,transparent);border-bottom:1px solid var(--line)}
header.top .wrap{display:flex;align-items:center;justify-content:space-between;height:68px;gap:16px}
.brand{display:flex;align-items:center;gap:10px;color:var(--text);font-weight:800;letter-spacing:.04em}
.brand:hover{text-decoration:none}
.brand img{height:30px;width:auto;display:block}
nav.main{display:flex;gap:22px;align-items:center}
nav.main a{color:var(--muted);font-size:.95rem}
nav.main a:hover{color:var(--text);text-decoration:none}
.lang{border:1px solid var(--line);border-radius:999px;padding:4px 12px;font-size:.85rem;color:var(--text)!important}
@media (max-width:820px){nav.main a:not(.lang):not(.btn){display:none}}

/* buttons */
.btn{display:inline-block;padding:13px 24px;border-radius:12px;font-weight:600;border:1px solid transparent;
  cursor:pointer;font-size:1rem;transition:transform .15s,box-shadow .15s}
.btn:hover{text-decoration:none;transform:translateY(-1px)}
.btn.primary{color:#04121a;background:linear-gradient(90deg,var(--accent),#7dd3fc);
  box-shadow:0 8px 28px rgba(34,211,238,.25)}
.btn.ghost{color:var(--text);border-color:var(--line);background:transparent}

/* hero */
.hero{position:relative;padding:96px 0 80px;overflow:hidden;
  background:
   radial-gradient(900px 400px at 80% -10%,rgba(99,102,241,.22),transparent 60%),
   radial-gradient(700px 380px at 0% 0%,rgba(34,211,238,.16),transparent 60%),
   linear-gradient(var(--grid) 1px,transparent 1px) 0 0/44px 44px,
   linear-gradient(90deg,var(--grid) 1px,transparent 1px) 0 0/44px 44px,var(--bg)}
.hero .tag{display:inline-block;font-size:.8rem;letter-spacing:.12em;text-transform:uppercase;
  color:var(--accent);border:1px solid var(--line);padding:6px 14px;border-radius:999px;margin-bottom:22px}
.hero p.lead{font-size:1.2rem;color:var(--muted);max-width:720px;margin-bottom:32px}
.hero .cta{display:flex;gap:14px;flex-wrap:wrap}

/* sections */
section{padding:84px 0}
section.alt{background:var(--bg2);border-block:1px solid var(--line)}
.eyebrow{color:var(--accent);font-size:.8rem;letter-spacing:.14em;text-transform:uppercase;margin-bottom:10px}
.sub{color:var(--muted);max-width:680px;margin-bottom:40px}
.grid{display:grid;gap:20px}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
@media (max-width:900px){.g3,.g2{grid-template-columns:1fr}}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px;
  box-shadow:var(--shadow);transition:border-color .2s,transform .2s}
.card:hover{border-color:color-mix(in srgb,var(--accent) 55%,var(--line));transform:translateY(-2px)}
.card .ico{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;margin-bottom:16px;
  background:linear-gradient(135deg,rgba(34,211,238,.18),rgba(99,102,241,.18));color:var(--accent);font-size:1.3rem}
.card ul{margin:12px 0 0;padding-left:18px;color:var(--muted)}
.card li{margin-bottom:6px}
.also{margin-top:28px}
.also .card{padding:22px}
.stack{margin-top:36px;padding:22px;border:1px dashed var(--line);border-radius:var(--radius)}

/* contact */
.contact-box{display:grid;grid-template-columns:1fr 1.2fr;gap:40px;align-items:start}
@media (max-width:900px){.contact-box{grid-template-columns:1fr}}
.contact-list{list-style:none;padding:0;margin:24px 0 0}
.contact-list li{margin-bottom:12px;color:var(--muted)}
.contact-list b{color:var(--text);display:inline-block;min-width:92px}
form.cf{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow)}
form.cf label{display:block;font-size:.88rem;color:var(--muted);margin:0 0 6px}
form.cf input,form.cf textarea{width:100%;padding:12px 14px;border-radius:10px;border:1px solid var(--line);
  background:var(--bg);color:var(--text);font:inherit;margin-bottom:16px}
form.cf input:focus,form.cf textarea:focus{outline:2px solid var(--accent);outline-offset:1px}
form.cf textarea{min-height:130px;resize:vertical}
.hp{position:absolute!important;left:-9999px;width:1px;height:1px;overflow:hidden}
.status{margin-top:14px;font-size:.95rem;min-height:1.4em}
.status.ok{color:#34d399}.status.err{color:#f87171}
.small{font-size:.8rem;color:var(--muted)}

footer{padding:36px 0;border-top:1px solid var(--line);color:var(--muted);font-size:.9rem}
footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}