.hub-page{min-height:100vh;padding:2rem 1rem}.hub-hero{text-align:center;margin-bottom:3rem;padding:2rem;background:linear-gradient(135deg,#2563eb,#1d4ed8);color:#fff;border-radius:12px}.hub-hero h1{color:#fff;font-size:2.5rem;margin-bottom:1rem}.hub-description{font-size:1.1rem;opacity:.9;margin:0}.about-section,.calculator-links-section,.related-units-section{margin-bottom:3rem}.about-section h2,.calculator-links-section h2,.related-units-section h2{font-size:1.75rem;font-weight:600;margin-bottom:1.5rem;color:#1f2937;text-align:center}.links-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));grid-gap:1rem;gap:1rem}.calculator-link-card{background:#fff;border:2px solid #e5e7eb;border-radius:8px;padding:1.5rem;text-decoration:none;color:#374151;display:flex;justify-content:space-between;align-items:center;transition:all .2s}.calculator-link-card:hover{border-color:#2563eb;background:#f0f7ff;transform:translateY(-2px);box-shadow:0 4px 6px rgba(0,0,0,.1)}.link-value{font-weight:600;font-size:1rem}.link-arrow{font-size:1.5rem;color:#2563eb}.about-section{background:#fff;border:2px solid #e5e7eb;border-radius:12px;padding:2rem}.about-content{max-width:800px;margin:0 auto}.about-content p{line-height:1.7;margin-bottom:1rem;color:#374151}.about-content h3{font-size:1.25rem;font-weight:600;margin-top:1.5rem;margin-bottom:.75rem;color:#1f2937}.about-content ul{margin:1rem 0;padding-left:1.5rem}.about-content li{margin-bottom:.5rem;color:#374151}.about-content strong{color:#2563eb}.related-units-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));grid-gap:1rem;gap:1rem}.related-unit-card{background:#fff;border:2px solid #e5e7eb;border-radius:8px;padding:1.5rem;text-decoration:none;color:#374151;text-align:center;transition:all .2s}.related-unit-card:hover{border-color:#2563eb;background:#f0f7ff;transform:translateY(-2px)}.related-unit-card h3{font-size:1.1rem;font-weight:600;margin-bottom:.5rem;color:#2563eb}.related-unit-card p{font-size:.9rem;margin:0;color:#6b7280}@media (max-width:768px){.hub-hero h1{font-size:2rem}.links-grid,.related-units-grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr))}.about-section{padding:1.5rem}}