:root{
  --accent: #38bdf8;
  --bg1: #0f172a;
  --bg2: #020617;
  --card: rgba(255,255,255,0.04);
  --text: #f8fafc;
}
*{box-sizing:border-box}
body{
  margin:0;
  font-family:Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  background: radial-gradient(circle at 20% 20%, var(--bg1), var(--bg2));
  color:var(--text);
  -webkit-font-smoothing:antialiased;
}
/* particles */
#particles{position:fixed;inset:0;z-index:-1;overflow:hidden}
.particle{position:absolute;width:3px;height:3px;background:var(--accent);border-radius:50%;opacity:0.6;animation:float linear infinite}
@keyframes float{0%{transform:translateY(100vh) scale(0.5);opacity:0}50%{opacity:0.8}100%{transform:translateY(-10vh) scale(1);opacity:0}}
/* hero */
.hero{height:100vh;display:flex;align-items:center;justify-content:center;text-align:center;padding:2rem}
.hero .wrap{max-width:980px}
h1{font-size:3rem;margin:0;background:linear-gradient(90deg,#38bdf8,#06b6d4,#3b82f6);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
h2{color:var(--accent);margin-top:0.5rem;font-weight:600}
p.lead{opacity:0.85}
.btn{display:inline-block;padding:0.75rem 1.5rem;background:var(--accent);color:#071024;border-radius:999px;text-decoration:none;font-weight:700;margin-top:1rem}
.btn:hover{transform:scale(1.03)}
/* sections */
section{max-width:1000px;margin:0 auto;padding:4rem 1rem}
h3{color:var(--accent);text-align:center;font-size:2rem;margin-bottom:1.2rem}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1.25rem}
.card{background:var(--card);padding:1.25rem;border-radius:12px;border:1px solid rgba(255,255,255,0.03);backdrop-filter:blur(6px);transition:transform .25s,box-shadow .25s}
.card:hover{transform:translateY(-6px);box-shadow:0 12px 30px rgba(0,0,0,0.45)}
.chip{display:inline-block;padding:.35rem .8rem;border-radius:999px;background:rgba(255,255,255,0.03);border:1px solid rgba(255,255,255,0.02);margin:.25rem;font-size:.9rem}
/* contact */
.socials{display:flex;gap:1rem;justify-content:center;align-items:center}
.socials a{display:inline-flex;padding:.5rem;border-radius:8px;border:1px solid rgba(255,255,255,0.03)}
form.contact-form{max-width:540px;margin:1.25rem auto 0;display:flex;flex-direction:column;gap:.75rem}
form.contact-form input, form.contact-form textarea{padding:.75rem;border-radius:8px;border:1px solid rgba(255,255,255,0.06);background:rgba(0,0,0,0.2);color:var(--text);outline:none}
form.contact-form button{padding:.75rem;border-radius:10px;border:0;background:var(--accent);color:#071024;font-weight:700}
footer{padding:2rem;text-align:center;color:#94a3b8;font-size:.9rem}
@media(min-width:768px){h1{font-size:4rem}}