:root{
  --bg:#0f172a; --panel:#111827; --text:#e5e7eb; --muted:#9ca3af; --accent:#38bdf8; --card:#0b1020; --border:rgba(255,255,255,.08);
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background:
   radial-gradient(1200px 800px at 10% 10%, #131a2f 0%, #0c1226 50%, var(--bg) 100%);
  line-height:1.6;
}

.container{max-width:1100px;margin:0 auto;padding:0 20px}
.header{
  display:flex;justify-content:space-between;align-items:center;
  padding:16px 0
}
.brand{font-size:1.25rem;font-weight:800;letter-spacing:.5px}
.brand span{color:var(--accent);font-weight:800}
.nav a{color:var(--text);text-decoration:none;margin-left:16px;opacity:.9}
.nav a:hover{opacity:1}
.btn{
  display:inline-block;background:var(--accent);color:#0b1020;
  padding:.6rem 1rem;border-radius:12px;font-weight:700;text-decoration:none
}
.btn-ghost{background:transparent;color:var(--text);border:1px solid var(--border)}

.hero{padding:6rem 0 4rem;text-align:center}
.hero h1{font-size: clamp(2rem, 6vw, 3.2rem); margin:0 0 1rem; letter-spacing:.5px}
.lead{max-width:760px;margin:0 auto 1.2rem;opacity:.9}
.accent{color:var(--accent)}
.cta{display:flex;gap:.6rem;justify-content:center;margin-top:.6rem;flex-wrap:wrap}

.section{padding:4rem 0}
.section.alt{background:linear-gradient(180deg, rgba(255,255,255,.02), rgba(255,255,255,.00))}
.section h2{font-size: clamp(1.6rem, 4.5vw, 2.2rem); margin:0 0 1rem}
.grid{
  display:grid; gap:16px;
  grid-template-columns: repeat( auto-fit, minmax(250px, 1fr) );
}
.card{
  background: rgba(255,255,255,.03);
  border:1px solid var(--border);
  border-radius:16px;
  padding:1.2rem;
  box-shadow: 0 10px 30px rgba(0,0,0,.25);
}

#contact .contact-mail a{
  display:inline-block; font-weight:800; text-decoration:none; color:var(--accent);
  background: rgba(56,189,248,.08); padding:.5rem .8rem; border-radius:12px;
}

.footer{border-top:1px solid var(--border); margin-top:2rem; background:rgba(255,255,255,.02)}
.footer-inner{display:flex;justify-content:space-between;align-items:center; padding:1rem 0}
.muted{color:var(--muted)}