.challenge-section{background-color:#f8fafc;border-top:1px solid #e2e8f0;padding:5rem 1.5rem}.section-narrow{margin:0 auto;max-width:896px}.challenge-wrapper{margin-top:3rem}.challenge-card{background-color:#fff;border:1px solid #e2e8f0;border-radius:8px;margin-bottom:2rem;padding:2rem}.challenge-card h3{margin-bottom:1rem}.challenge-section h2,.challenge-section h3{color:#0f172a}