* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: system-ui, sans-serif; background: #f8fafc; color: #1e293b; padding: 20px; }
header { text-align: center; margin-bottom: 24px; padding-bottom: 16px; border-bottom: 1px solid #e2e8f0; }
header h1 { font-size: 24px; color: #0f172a; }
header p { color: #64748b; font-size: 14px; margin-top: 4px; }
#product-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px; max-width: 1000px; margin: 0 auto; }
.card { background: #fff; border-radius: 8px; padding: 16px; box-shadow: 0 1px 3px rgba(0,0,0,0.1); border: 1px solid #e2e8f0; }
.card h3 { font-size: 18px; margin-bottom: 8px; }
.card .price { font-weight: bold; color: #16a34a; }