:root{--checkout-primary:#006be6;--checkout-primary-hover:#005fcc;--checkout-primary-active:#0053b3;--checkout-primary-soft:#ebf4ff;--checkout-primary-border:#bcd7f5;--checkout-primary-focus:#80bbff;font-synthesis:none;color:#20242c;letter-spacing:0;background:#f5f7fa;font-family:PingFang SC,Microsoft YaHei,sans-serif}*{box-sizing:border-box}body{margin:0}button,input{font:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed}button:focus-visible{outline:3px solid var(--checkout-primary-focus);outline-offset:4px}a:focus-visible{outline:3px solid var(--checkout-primary-focus);outline-offset:4px}.checkout-shell{background:#fff;flex-direction:column;width:min(100%,520px);min-height:100dvh;margin:0 auto;display:flex}.brand-bar{border-bottom:1px solid #eef0f3;justify-content:space-between;align-items:center;min-height:48px;padding:12px 24px;font-size:13px;display:flex}.brand-name{color:#20242c;align-items:center;gap:9px;font-size:14px;font-weight:650;text-decoration:none;display:flex}main{flex:1;min-width:0}.muted{color:#747b87}.merchant-band{align-items:center;gap:14px;padding:24px 24px 12px;display:flex}.store-symbol{width:40px;height:40px;color:var(--checkout-primary);background:var(--checkout-primary-soft);border-radius:8px;flex-shrink:0;place-items:center;display:grid}.merchant-heading{min-width:0}h1{overflow-wrap:anywhere;margin:0;font-size:18px;font-weight:650;line-height:1.5}.merchant-heading p{color:#747b87;overflow-wrap:anywhere;margin:4px 0 0;font-size:14px}.amount-band{padding:24px 24px 20px}.amount-band label{color:#565e6b;font-size:14px}.amount-line{font-variant-numeric:tabular-nums;align-items:baseline;gap:8px;min-height:64px;margin-top:10px;display:flex}.amount-line>span{font-size:28px;font-weight:500}.amount-line strong{overflow-wrap:anywhere;min-width:0;font-size:44px;font-weight:600}.amount-line input{color:#20242c;background:0 0;border:0;border-bottom:2px solid #edf0f5;border-radius:0;outline:0;width:100%;min-width:0;padding:0;font-size:44px;font-weight:600}.amount-line input:focus{border-color:var(--checkout-primary)}.long-amount strong,.long-amount input{font-size:32px}.amount-line input::placeholder{color:#bdc3cd}.amount-line input:disabled{color:#8a929e}.amount-note,.amount-error{overflow-wrap:anywhere;min-height:18px;margin:10px 0 0;font-size:12px}.amount-note{color:#89909b}.amount-error{color:#c83939}.details-band{border-top:1px solid #f0f2f4;padding:0 24px}.detail-row{justify-content:space-between;align-items:baseline;gap:20px;padding:14px 0;font-size:14px;display:flex}.detail-row>:first-child{flex-shrink:0}.wallet-name{align-items:center;gap:7px;display:flex}.wechat{color:#1c9b60}.alipay{color:#1677ff}.action-band{padding:8px 24px 24px}.availability{color:#747b87;align-items:flex-start;gap:9px;padding:12px 0;display:flex}.availability svg{flex-shrink:0;margin-top:2px}.availability strong{font-size:14px;font-weight:500}.availability p{color:#747b87;margin:0;font-size:12px;line-height:1.7}.pay-button{color:#fff;background:var(--checkout-primary);border:0;border-radius:10px;justify-content:center;align-items:center;gap:8px;width:100%;height:50px;margin-top:8px;font-size:16px;font-weight:600;transition:background .16s,transform .16s;display:flex}.session-clock{font-variant-numeric:tabular-nums;color:#8a929e;justify-content:center;align-items:center;gap:6px;font-size:12px;display:flex}footer{padding:24px 20px max(24px, env(safe-area-inset-bottom));color:#99a0ac;justify-content:center;align-items:center;gap:5px;font-size:12px;display:flex}.empty-state{text-align:center;flex-direction:column;justify-content:center;align-items:center;min-height:380px;padding:40px 28px;display:flex}.state-symbol{color:#6b84aa;padding-bottom:22px}.empty-state p{color:#747b87;font-size:14px;line-height:1.8}.retry-button{color:var(--checkout-primary);background:var(--checkout-primary-soft);border:1px solid var(--checkout-primary-border);border-radius:6px;justify-content:center;align-items:center;gap:8px;margin-top:22px;padding:12px 26px;display:flex}.retry-button:disabled{color:#8894a5}.reference{color:#99a0ac;overflow-wrap:anywhere;margin-top:28px;font-size:11px}.loading-icon{color:var(--checkout-primary);margin-bottom:24px;animation:1.2s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}@media (prefers-reduced-motion:reduce){.loading-icon{animation:none}}@media (min-width:700px){.checkout-shell{border:1px solid #e8ebf0;min-height:740px;margin:40px auto}}@media (max-width:360px){.brand-bar,.merchant-band,.amount-band,.details-band,.action-band{padding-left:20px;padding-right:20px}}.pay-button:disabled{color:#8a94a4;background:#e9edf3}.pay-button:not(:disabled):active{background:var(--checkout-primary-active);transform:scale(.985)}.secondary-button,.next-button{border-radius:10px;width:100%;min-height:44px;margin-top:10px;font-size:14px;display:block}.secondary-button{color:var(--checkout-primary);border:1px solid var(--checkout-primary-border);background:#fff}.next-button{color:var(--checkout-primary);text-underline-offset:4px;background:0 0;border:0;text-decoration:underline}.secondary-button:disabled,.next-button:disabled{opacity:.5}.payment-status{color:#96661d;margin:0 0 18px;font-size:16px}.payment-status.success{color:#15874f}.next-confirm{background:#fff8ec;border:1px solid #eadbbf;border-radius:12px;margin-top:16px;padding:16px}.next-confirm h2,.recent-orders h2{margin:0 0 8px;font-size:15px}.next-confirm p{color:#775c32;margin:0 0 12px;font-size:13px;line-height:1.7}.recent-orders{border-top:8px solid #f5f7fa;padding:16px 24px}.recent-orders a{color:var(--checkout-primary);justify-content:space-between;gap:12px;padding:14px 0;font-size:13px;text-decoration:none;display:flex}.recent-orders small{color:#747b87;margin-top:5px;font-size:11px;display:block}@media (hover:hover){.pay-button:not(:disabled):not(:active):hover{background:var(--checkout-primary-hover)}.secondary-button:not(:disabled):hover{background:var(--checkout-primary-soft)}}.amount-keypad{margin:4px 0 12px}.keypad-heading{color:#747b87;justify-content:space-between;align-items:center;min-height:40px;font-size:12px;display:flex}.keypad-heading button{min-height:40px;color:var(--checkout-primary);background:0 0;border:0;padding:0 4px 0 20px}.keypad-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;display:grid}.keypad-grid button{font-variant-numeric:tabular-nums;color:#20242c;touch-action:manipulation;-webkit-user-select:none;user-select:none;background:#f3f5f8;border:0;border-radius:8px;height:48px;padding:0;font-size:24px}.keypad-grid button:active{background:var(--checkout-primary-soft)}.keypad-grid .keypad-delete{font-size:15px}.keypad-grid button:disabled,.keypad-heading button:disabled{color:#a3aab5}.pay-button.is-busy:disabled{color:#fff;cursor:progress;background:var(--checkout-primary);opacity:1}.button-spinner{flex-shrink:0;animation:1s linear infinite spin}.payment-progress{color:#747b87;text-align:center;margin:12px 0 0;font-size:12px;line-height:1.7}@media (prefers-reduced-motion:reduce){.button-spinner{animation:none}}