:root {
  --bg: #05060a;
  --card: #11131c;
  --accent: #21d4fd;
  --accent-2: #b721ff;
  --text: #f4f5ff;
  --muted: #8a90b4;
  --border: rgba(244, 245, 255, 0.08);
  font-family: 'Onest', 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(circle at top, rgba(33,212,253,.12), transparent 45%), var(--bg);
  color: var(--text);
}
.hero {
  display: flex;
  gap: clamp(2rem, 4vw, 4rem);
  padding: clamp(2rem, 5vw, 5rem);
  align-items: center;
  flex-wrap: wrap;
}
.hero__content { flex: 1 1 320px; }
.hero__preview { flex: 1 1 260px; display: flex; justify-content: center; }
.badge {
  background: rgba(33,212,253,0.1);
  border: 1px solid rgba(33,212,253,0.4);
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  display: inline-flex;
  font-size: 0.9rem;
}
h1 {
  font-size: clamp(2.2rem, 4vw, 3rem);
  margin: 1rem 0 0.5rem;
}
.subtitle { font-size: 1.1rem; color: var(--muted); line-height: 1.6; }
.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin: 1.5rem 0 0.5rem;
}
.btn {
  border: none;
  border-radius: 999px;
  padding: 0.85rem 1.5rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform .2s ease, box-shadow .2s ease;
}
.btn--primary {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  color: #05060a;
  box-shadow: 0 12px 30px rgba(33,212,253,0.35);
}
.btn--ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
}
.btn:hover { transform: translateY(-2px); }
.muted { color: var(--muted); }
.chat-card {
  background: var(--card);
  border: 1px solid var(--border);
  padding: 1.5rem;
  border-radius: 1.5rem;
  min-width: 260px;
  box-shadow: 0 25px 60px rgba(0,0,0,0.45);
}
.chat-card__title { font-weight: 600; margin-bottom: 0.8rem; }
.chat-card ul { list-style: none; padding: 0; margin: 0; color: var(--muted); line-height: 1.7; }
.grid {
  display: grid;
  gap: 1.2rem;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  padding: 0 clamp(1.5rem, 5vw, 5rem);
}
.grid article {
  background: var(--card);
  border: 1px solid var(--border);
  padding: 1.5rem;
  border-radius: 1.2rem;
}
.cta {
  margin: clamp(2rem, 5vw, 4rem);
  background: linear-gradient(120deg, rgba(33,212,253,0.15), rgba(183,33,255,0.15));
  border: 1px solid rgba(33,212,253,0.25);
  border-radius: 1.5rem;
  padding: clamp(1.5rem, 4vw, 3rem);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
}
footer {
  text-align: center;
  color: var(--muted);
  padding: 2rem 1rem 3rem;
}
@media (max-width: 768px) {
  .hero { padding-top: 3.5rem; }
  .hero__actions { flex-direction: column; align-items: stretch; }
  .btn { width: 100%; text-align: center; }
}