:root{
  --bg-0:#070318;--bg-1:#040214;
  --cosmic-1:#b463ff;--cosmic-2:#6a36ff;
  --muted:#d9ccff;--glass:rgba(255,255,255,0.03);
  --glass-2:rgba(155,92,255,0.06);
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%;font-family:Inter,system-ui,Arial;background:linear-gradient(180deg,var(--bg-0),var(--bg-1));color:var(--muted);-webkit-font-smoothing:antialiased}
body::before{content:"";position:fixed;inset:0;z-index:0;background-image:url('stars_milkyway.jpg');background-size:cover;background-position:center;opacity:0.10;filter:blur(8px)}
.header{position:fixed;top:0;left:0;right:0;height:72px;display:flex;align-items:center;justify-content:space-between;padding:12px 18px;z-index:60;background:linear-gradient(180deg,rgba(0,0,0,0.25),rgba(0,0,0,0.12));backdrop-filter: blur(6px);border-bottom:1px solid var(--glass-2)}
.logo{font-family:Orbitron;color:var(--cosmic-2);font-weight:800}
.nav{display:flex;gap:10px;align-items:center}
.nav a{color:var(--muted);text-decoration:none;padding:8px 12px;border-radius:8px;font-weight:600}
.menu-btn{display:none;background:none;border:0;color:var(--muted);font-size:22px;cursor:pointer;padding:8px;border-radius:8px}
.lang-switch{display:flex;gap:6px}
.lang-switch button{background:transparent;border:1px solid var(--glass-2);color:var(--muted);padding:6px 9px;border-radius:8px;cursor:pointer}
@media(max-width:880px){ .nav a{display:none} .menu-btn{display:inline-block} }

/* Overlay menu */
.overlay{position:fixed;inset:0;z-index:80;background:linear-gradient(180deg,rgba(5,2,20,0.98),rgba(0,0,0,0.95));display:flex;align-items:center;justify-content:center;transform:scale(0.98);opacity:0;pointer-events:none;transition:all .28s}
.overlay.show{opacity:1;pointer-events:auto;transform:scale(1)}
.overlay .menu{display:flex;flex-direction:column;gap:18px;align-items:center}
.overlay a{font-family:Orbitron;color:var(--cosmic-1);font-size:28px;text-decoration:none;padding:12px 24px;border-radius:12px;transition:all .18s}
.overlay a:hover{color:var(--cosmic-2);transform:translateY(-6px)}

/* container & hero */
.container{max-width:1180px;margin:120px auto 80px;padding:0 18px;position:relative;z-index:10}
.hero{text-align:center;margin-bottom:18px}
h1{font-family:Orbitron;font-size:2.6rem;background:linear-gradient(90deg,var(--cosmic-1),var(--cosmic-2));-webkit-background-clip:text;-webkit-text-fill-color:transparent;margin-bottom:6px}
.lead{color:var(--muted)}

/* features / cards */
.feature{margin:22px auto;border-radius:14px;overflow:hidden;position:relative;border:2px solid var(--glass-2);box-shadow:0 20px 60px rgba(100,40,160,0.06);max-width:940px}
.frame{position:relative;padding-bottom:56.25%;height:0}
.frame iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.card{background:linear-gradient(180deg,rgba(255,255,255,0.01),transparent);padding:14px;border-radius:12px;border:1px solid rgba(255,255,255,0.02);margin-bottom:12px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:18px;margin-top:18px}

/* footer */
.footer{margin-top:40px;padding:30px 20px;text-align:center;color:var(--muted);border-top:1px solid rgba(255,255,255,0.02)}

/* small */
@media(max-width:720px){h1{font-size:1.9rem}.container{margin:90px 16px}}