:root {
  --bg: #0b1220;
  --card: #10192e;
  --muted: #aab3c5;
  --text: #eaf0ff;
  --brand: #5b8cff;
  --brand-600: #3b6df0;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.container { width: 100%; max-width: 1100px; margin: 0 auto; padding: 0 20px; }

.site-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(8px);
  background: rgba(11,18,32,0.7);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { color: var(--text); text-decoration: none; font-weight: 700; letter-spacing: 0.3px; }
.social { display: flex; gap: 10px; margin-left: auto; margin-right: 16px; color: var(--muted); }
.social-link { color: inherit; text-decoration: none; display: inline-flex; align-items: center; justify-content: center; width: 28px; height: 28px; border-radius: 6px; }
.social-link:hover { color: var(--text); background: rgba(255,255,255,0.06); }
.nav { display: flex; gap: 16px; }
.nav-link { color: var(--muted); text-decoration: none; padding: 8px 10px; border-radius: 8px; }
.nav-link:hover, .nav-link.active { color: var(--text); background: rgba(255,255,255,0.06); }

.hero { padding: 72px 0 48px; background: radial-gradient(1200px 500px at 50% -10%, rgba(91,140,255,0.2), rgba(11,18,32,0) 60%); }
.hero h1 { font-size: 40px; margin: 0 0 12px; }
.hero p { margin: 0 0 24px; color: var(--muted); max-width: 720px; }
.btn { display: inline-block; background: var(--brand); color: #fff; padding: 10px 16px; border-radius: 10px; text-decoration: none; font-weight: 600; }
.btn:hover { background: var(--brand-600); }

.features { padding: 40px 0 64px; }
.features h2 { margin-top: 0; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.card { background: var(--card); border: 1px solid rgba(255,255,255,0.06); border-radius: 12px; padding: 16px; }
.card h3 { margin-top: 0; }

.page { padding: 40px 0 64px; }

.site-footer { border-top: 1px solid rgba(255,255,255,0.06); }
.footer-inner { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.footer-links { display: flex; gap: 12px; }
.footer-links a { color: var(--muted); text-decoration: none; }
.footer-links a:hover { color: var(--text); }

.contact-form { max-width: 560px; }
.form-row { display: flex; flex-direction: column; gap: 8px; margin-bottom: 14px; }
label { color: var(--muted); font-size: 14px; }
input, textarea {
  background: #0e172a;
  border: 1px solid rgba(255,255,255,0.08);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 10px;
}
.form-status { color: var(--muted); font-size: 14px; margin-top: 8px; }

@media (max-width: 840px) { .grid-3 { grid-template-columns: 1fr; } }