body{background:#f6f8fb;color:#172033}.navbar-brand{font-weight:800;letter-spacing:.4px}
.hero{padding:6rem 0;background:linear-gradient(135deg,#111827,#263b5e);color:#fff}
.card{border:0;box-shadow:0 8px 30px rgba(0,0,0,.07)}
footer{background:#111827;color:#cbd5e1}.codebox{background:#111827;color:#e5e7eb;padding:1rem;border-radius:.75rem}