body{color:#111827;background:#f3f4f6;margin:0;font-family:system-ui,sans-serif}.page{min-height:100vh}.store-header{background:#fff;border-bottom:1px solid #e5e7eb;align-items:center;gap:10px;padding:16px 24px;display:flex}.store-logo{color:#fff;background:#4f46e5;border-radius:8px;justify-content:center;align-items:center;width:32px;height:32px;display:inline-flex}.store-name{font-size:1.15rem;font-weight:700}.store-step{color:#6b7280;margin-left:auto;font-size:.9rem}.checkout{grid-template-columns:1fr;gap:20px;max-width:960px;margin:32px auto;padding:0 16px;display:grid}@media (width>=768px){.checkout{grid-template-columns:3fr 2fr;align-items:start}}.card{background:#fff;border:1px solid #e5e7eb;border-radius:12px;padding:20px 24px;box-shadow:0 1px 3px #0000000f}.card h1,.card h2{margin:0 0 16px;font-size:1.2rem}.line-items{margin:0;padding:0;list-style:none}.line-item{border-top:1px solid #f3f4f6;align-items:center;gap:14px;padding:12px 0;display:flex}.line-item:first-child{border-top:none}.item-tile{border-radius:10px;flex-shrink:0;justify-content:center;align-items:center;width:48px;height:48px;font-size:1.5rem;display:inline-flex}.item-name{flex:1;font-weight:500}.item-price{font-variant-numeric:tabular-nums}.summary-row{color:#374151;margin:0 0 10px}.discount{border-top:1px solid #f3f4f6;margin:16px 0;padding-top:16px}.discount label{color:#4b5563;margin-bottom:6px;font-size:.9rem;display:block}.discount-field{gap:8px;display:flex}.discount-field input{min-width:0;font:inherit;border:1px solid #d1d5db;border-radius:8px;flex:1;padding:8px 10px}.discount-field button{color:#4f46e5;font:inherit;cursor:pointer;background:#fff;border:1px solid #4f46e5;border-radius:8px;padding:8px 14px;font-weight:600}.summary-total{border-top:1px solid #e5e7eb;margin:0 0 16px;padding-top:16px;font-size:1.5rem;font-weight:700}.place-order{color:#fff;width:100%;font:inherit;background:#4f46e5;border:none;border-radius:8px;padding:12px;font-weight:600}.place-order:disabled{opacity:.55;cursor:not-allowed}.demo-note{text-align:center;color:#6b7280;margin:8px 0 0;font-size:.8rem}