*{box-sizing:border-box;margin:0;padding:0}body{background:#f5f5f7;justify-content:center;align-items:center;min-height:100vh;padding:16px;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;display:flex}.checkout-container{text-align:center;flex-direction:column;align-items:center;gap:8px;width:100%;max-width:320px;display:flex}h1{color:#1d1d1f;font-size:22px;font-weight:600}.subtext{color:#6e6e73;margin-bottom:16px;font-size:15px}.payment-buttons{flex-direction:column;gap:10px;width:100%;display:flex}.wallet-button{cursor:pointer;border-radius:4px;width:100%;min-height:48px;overflow:hidden}#google-pay-button iframe{border-radius:4px}.wallet-button.apple-pay{-webkit-appearance:-apple-pay-button;-apple-pay-button-type:plain;-apple-pay-button-style:black}.spinner{border:2px solid #e0e0e0;border-top-color:#6e6e73;border-radius:50%;width:20px;height:20px;margin:8px auto;animation:.7s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.demo-notice{color:#aeaeb2;margin-bottom:8px;font-size:12px}.unavailable,.status-message{color:#6e6e73;font-size:14px}.status-message.error{color:#c0392b}.success-icon{color:#34c759;margin-bottom:4px;font-size:32px}