body {
}
.hero {
    background: radial-gradient(1200px 600px at 20% 10%, rgba(0, 229, 255, 0.12), transparent 60%), radial-gradient(900px 500px at 80% 0%, rgba(0, 255, 157, 0.10), transparent 55%);
}

.hero-card,
.feature-card {
    background-color: #161a22;
    border: 1px solid #222831;
}

.btn-primary {
    box-shadow: 0 0 12px rgba(0, 229, 255, 0.25);
}