:root{
  --bg:#0b0d10;
  --bg-soft:#0e1116;
  --text:#eef2f7;
  --muted:#aab3c5;
  --brand:#4ea4ff;
  --accent:#68f0c3;
  --card:#12161d;
  --border:#1b222c;
  --shadow:0 10px 30px rgba(0,0,0,.35);
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Inter,Ubuntu,"Helvetica Neue",Arial,sans-serif;
  color:var(--text);
  background:linear-gradient(180deg,#0a0c0f 0%, #0c1016 100%);
  line-height:1.6;
}

.container{max-width:1100px;margin:0 auto;padding:0 20px}
.section{padding:70px 0}

.site-header{
  position:sticky;top:0;z-index:50;
  backdrop-filter:saturate(180%) blur(10px);
  background:rgba(12,16,22,.7);
  border-bottom:1px solid var(--border);
}
.nav{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 0;
}
.brand{display:flex;align-items:center;gap:12px}
.logo-mark{
  width:40px;height:40px;border-radius:10px;
  background:linear-gradient(135deg,var(--brand),#7cc8ff);
  display:grid;place-items:center;
  color:#00131f;font-weight:800
}
.brand-name{font-weight:700;letter-spacing:.2px}
.brand-tag{font-size:12px;color:var(--muted)}

.nav-links a{
  color:var(--text);text-decoration:none;margin-left:18px;
  opacity:.9
}
.nav-links .cta{
  border:1px solid var(--brand);
  padding:8px 14px;border-radius:8px;
}

.hero{
  position:relative;min-height:72vh;
  display:grid;align-items:center;
  background:radial-gradient(1200px 300px at 20% 0%, rgba(78,164,255,.25), transparent),
             radial-gradient(900px 300px at 80% 0%, rgba(104,240,195,.15), transparent);
}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,12,15,0) 0%, rgba(10,12,15,.6) 60%, rgba(10,12,15,1) 100%)}
.hero-inner{position:relative;z-index:1;padding:90px 0}
.hero h1{font-size:40px;line-height:1.15;margin:0 0 12px}
.hero p{color:var(--muted);max-width:720px;margin:0 0 22px}
.hero-actions{display:flex;gap:12px;margin:10px 0 16px}
.btn{
  display:inline-block;border-radius:10px;padding:12px 18px;
  text-decoration:none;color:var(--text);border:1px solid var(--border)
}
.btn.primary{background:linear-gradient(135deg,var(--brand),#7cc8ff);color:#041420;border:none}
.btn.ghost{background:transparent}
.trust{color:var(--muted);font-size:13px;margin-top:8px}

h2{font-size:30px;margin:0 0 8px}
.section-lead{color:var(--muted);margin:0 0 28px}

.grid{
  display:grid;gap:18px;
  grid-template-columns:repeat(4,1fr);
}
@media(max-width:1000px){.grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:640px){.grid{grid-template-columns:1fr}}

.card{
  background:var(--card);border:1px solid var(--border);
  border-radius:14px;padding:18px;box-shadow:var(--shadow);
}
.card .icon{font-size:28px;margin-bottom:8px}
.card h3{margin:6px 0 6px}
.card p{color:var(--muted);margin:0 0 12px}
.card ul{padding-left:18px;margin:0}
.card li{color:var(--muted)}

.about-inner{
  display:grid;gap:24px;grid-template-columns:1.2fr .8fr;
}
@media(max-width:900px){.about-inner{grid-template-columns:1fr}}
.about-visual{display:grid;place-items:center}
.about-card{
  background:linear-gradient(180deg,#0f141c, #0b1016);
  border:1px solid var(--border);border-radius:16px;padding:18px 20px;
  display:flex;gap:16px;box-shadow:var(--shadow)
}
.about-stat{display:grid}
.about-stat .big{font-size:28px;font-weight:800}
.about-stat .small{font-size:12px;color:var(--muted)}

.contact-grid{
  display:grid;gap:24px;grid-template-columns:1.1fr .9fr
}
@media(max-width:900px){.contact-grid{grid-template-columns:1fr}}

.contact-form{
  background:var(--card);border:1px solid var(--border);border-radius:14px;padding:18px;box-shadow:var(--shadow)
}
.field{display:grid;margin-bottom:12px}
label{font-size:14px;margin-bottom:6px;color:#d9e3f3}
input,textarea{
  width:100%;border-radius:10px;border:1px solid var(--border);
  background:#0a0e14;color:var(--text);padding:12px 12px
}
.actions{display:flex;align-items:center;gap:12px;margin-top:6px}
.form-note{color:var(--muted);font-size:13px}

.contact-details .detail{
  display:flex;gap:12px;background:var(--card);border:1px solid var(--border);
  border-radius:14px;padding:14px;margin-bottom:12px;box-shadow:var(--shadow)
}
.contact-details .icon{font-size:22px}

.site-footer{
  border-top:1px solid var(--border);padding:18px 0;margin-top:30px;
  background:rgba(12,16,22,.6)
}
.site-footer .container{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}
.site-footer a{color:var(--muted);text-decoration:none;margin-left:10px}

.to-top{
  position:fixed;right:16px;bottom:16px;border-radius:50%;
  width:42px;height:42px;border:1px solid var(--border);
  background:var(--card);color:var(--text);box-shadow:var(--shadow);
  cursor:pointer;display:none
}
.to-top.show{display:block}