:root {
  --bg: #081021;
  --bg-soft: #0f1d3d;
  --surface: #ffffff;
  --surface-soft: #f5f8ff;
  --text: #111827;
  --text-light: #e5e7eb;
  --muted: #6b7280;
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --border: #d1d5db;
  --radius: 14px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, sans-serif; color: var(--text); }
a { text-decoration: none; color: inherit; }

.container { width: min(1120px, 92vw); margin: 0 auto; }

.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(8, 16, 33, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-inner {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand { display: flex; align-items: center; gap: 10px; color: var(--text-light); }
.brand-mark {
  display: inline-flex;
  width: 34px;
  height: 34px;
  border-radius: 10px;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #2563eb, #14b8a6);
  color: #fff;
  font-weight: 700;
  font-size: 13px;
}
.brand-text { font-weight: 700; letter-spacing: 0.2px; }

.nav-links { display: flex; gap: 24px; color: #dbe3f3; font-size: 14px; }
.nav-links a:hover { color: #fff; }

.hero {
  background: radial-gradient(1200px 500px at 20% -10%, #1e40af, transparent), var(--bg);
  color: var(--text-light);
  padding: 72px 0 84px;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 42px;
  align-items: center;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 12px;
  color: #93c5fd;
  margin: 0 0 12px;
  font-weight: 600;
}

h1 {
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.08;
  margin: 0 0 16px;
}

.subtitle {
  color: #c7d2fe;
  font-size: 17px;
  line-height: 1.6;
  margin: 0 0 24px;
}

.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  border: 1px solid transparent;
  background: var(--primary);
  color: #fff;
  font-weight: 600;
  transition: all 0.18s ease;
}
.btn:hover { background: var(--primary-dark); transform: translateY(-1px); }
.btn-sm { padding: 10px 14px; font-size: 14px; }
.btn-lg { padding: 12px 18px; font-size: 15px; }
.btn-secondary {
  background: transparent;
  border-color: rgba(255, 255, 255, 0.3);
}
.btn-secondary:hover {
  border-color: rgba(255, 255, 255, 0.65);
  background: rgba(255, 255, 255, 0.08);
}

.hero-card {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.13), rgba(255, 255, 255, 0.07));
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius);
  padding: 24px;
}
.hero-card h3 { margin: 0 0 12px; }
.hero-card ul { margin: 0; padding-left: 20px; line-height: 1.85; color: #dbeafe; }

.section { padding: 80px 0; background: var(--surface); }
.section-alt { background: var(--surface-soft); }
.section h2 { margin-top: 0; font-size: 32px; letter-spacing: -0.02em; }

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.card {
  padding: 22px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #fff;
}
.card h3 { margin-top: 0; }
.card p { color: #374151; line-height: 1.6; margin-bottom: 0; }

.steps {
  margin: 8px 0 0;
  padding-left: 18px;
  line-height: 1.85;
  color: #1f2937;
}

.demo-panel {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  background: linear-gradient(180deg, #f9fbff, #f3f6ff);
}

.footer {
  border-top: 1px solid #e5e7eb;
  background: #fff;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  color: #111827;
}
.muted { color: var(--muted); }

@media (max-width: 980px) {
  .hero-inner {
    grid-template-columns: 1fr;
  }
  .grid {
    grid-template-columns: 1fr;
  }
  .nav-links { display: none; }
}