:root{
  --bg: #0b1220;
  --card: rgba(255,255,255,0.06);
  --text: rgba(255,255,255,0.92);
  --muted: rgba(255,255,255,0.65);
  --accent: #6d5efc;
  --border: rgba(255,255,255,0.12);
}

*{ box-sizing: border-box; }
html,body{ height: 100%; }
body{
  margin:0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: radial-gradient(1200px 600px at 20% 0%, rgba(109,94,252,0.35), transparent 55%),
              radial-gradient(900px 500px at 80% 10%, rgba(0,200,255,0.18), transparent 60%),
              var(--bg);
  color: var(--text);
}

.topbar{
  position: sticky;
  top:0;
  display:flex;
  align-items:center;
  justify-content: space-between;
  padding: 16px 20px;
  backdrop-filter: blur(10px);
  background: rgba(11,18,32,0.6);
  border-bottom: 1px solid var(--border);
}

.brand{ font-weight: 800; letter-spacing: 0.3px; }

.nav{ display:flex; gap: 16px; }
.nav-link{
  color: var(--muted);
  text-decoration:none;
  font-weight:600;
}
.nav-link:hover{ color: var(--text); }

main{ max-width: 1000px; margin: 0 auto; padding: 28px 18px 60px; }

.hero{
  padding: 42px 16px;
}
.hero h1{
  margin:0 0 10px;
  font-size: clamp(28px, 4vw, 48px);
}
.hero p{
  margin:0 0 22px;
  color: var(--muted);
  max-width: 62ch;
}
.cta-row{ display:flex; gap: 12px; }

.btn{
  display:inline-block;
  padding: 12px 18px;
  background: var(--accent);
  color: #fff;
  text-decoration:none;
  border-radius: 12px;
  font-weight: 800;
  box-shadow: 0 10px 30px rgba(109,94,252,0.35);
}

.section{
  padding: 26px 0;
}
.section h2{
  margin: 0 0 12px;
  font-size: 22px;
}

.grid{
  display:grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}
@media (max-width: 800px){
  .grid{ grid-template-columns: 1fr; }
  .nav{ display:none; }
}

.card{
  border: 1px solid var(--border);
  background: var(--card);
  border-radius: 16px;
  overflow:hidden;
}
.img-placeholder{
  height: 150px;
  display:flex;
  align-items:center;
  justify-content:center;
  color: var(--muted);
  background: rgba(255,255,255,0.04);
}
.card-body{ padding: 14px; display:flex; flex-direction:column; gap: 6px; }
.muted{ color: var(--muted); font-size: 14px; }

.footer{
  border-top: 1px solid var(--border);
  padding-top: 18px;
  color: var(--muted);
  margin-top: 30px;
  text-align:center;
}