:root{font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.45;font-weight:400;color:#111827;background-color:#f8fafc;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{box-sizing:border-box}body{margin:0;min-width:320px}a{color:#2563eb;text-decoration:none}h1,h2,h3,p{margin:0 0 .75rem}.app-shell{min-height:100vh}.container{width:min(1080px,94vw);margin:0 auto}.header{background:#fff;border-bottom:1px solid #e5e7eb}.nav{display:flex;align-items:center;justify-content:space-between;padding:1rem 0}.brand{font-weight:700;color:#0f172a}.nav-links{display:flex;gap:1rem;align-items:center}.content{padding:1.25rem 0 2rem}.hero{background:#fff;border:1px solid #e5e7eb;border-radius:12px;padding:1.25rem;margin-bottom:1.25rem}.grid{display:grid;gap:1rem;grid-template-columns:repeat(auto-fill,minmax(220px,1fr))}.card{background:#fff;border:1px solid #e5e7eb;border-radius:12px;padding:1rem}.product-card{display:flex;flex-direction:column;justify-content:space-between;gap:.75rem}.product-body{flex:1}.product-image{width:100%;aspect-ratio:4 / 3;object-fit:cover;border-radius:8px;border:1px solid #e5e7eb}.product-image.large{max-width:420px}.details{display:flex;gap:1.25rem;align-items:flex-start;flex-wrap:wrap}.row{display:flex;gap:.75rem;align-items:center;margin:.5rem 0;flex-wrap:wrap}.list{margin:.75rem 0}.list-row{display:flex;justify-content:space-between;gap:1rem;align-items:center;border-bottom:1px solid #e5e7eb;padding:.75rem 0}.summary{margin-top:1rem;border-top:1px solid #e5e7eb;padding-top:1rem}.form{display:grid;gap:.75rem}.input{width:100%;border:1px solid #d1d5db;border-radius:8px;padding:.5rem .65rem;font-size:.95rem}.input.small{width:84px}.button{background:#2563eb;color:#fff;border:1px solid #2563eb;border-radius:8px;padding:.5rem .8rem;cursor:pointer;font-size:.95rem}.button.secondary{background:#fff;color:#111827;border-color:#d1d5db}.button:disabled{opacity:.65;cursor:not-allowed}.muted{color:#6b7280}.price{font-weight:700}.error{color:#b91c1c;margin-bottom:.75rem}