:root{font-family:Inter,Segoe UI,Microsoft YaHei,sans-serif;color:#1c2c46;background:#f4f6fa;font-synthesis:none;-webkit-font-smoothing:antialiased;font-weight:400}*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,a,select{-webkit-tap-highlight-color:transparent}button,a{transition:background .18s,box-shadow .18s,transform .18s}button{cursor:pointer}button:disabled{opacity:.6;cursor:wait}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible,select:focus-visible{outline:3px solid #a3b4fa;outline-offset:3px}.checkout-shell{max-width:1220px;margin:auto;padding:0 54px}header{height:106px;display:flex;align-items:center;justify-content:space-between}.wordmark{display:flex;align-items:center;gap:10px;font-size:29px;font-weight:750;letter-spacing:-1.7px}.brand-icon{background:#2f55d4;color:#fff;width:32px;height:32px;display:grid;place-items:center;border-radius:9px;font-size:27px;font-weight:600;padding-bottom:5px}.brand-divider{height:23px;width:1px;background:#d8dde7;margin:0 10px}.secure-title{font-size:13px;font-weight:500;letter-spacing:.3px;color:#748095}.language{display:flex;align-items:center;gap:8px;font-size:12px;color:#657188}.language select{border:none;background:none;color:#43516b;appearance:none;padding:8px 0;outline:none;cursor:pointer}main{display:grid;grid-template-columns:1fr 454px;gap:90px;padding:56px 0 72px;align-items:start}.checkout-intro{padding:24px 0}.eyebrow{color:#77849d;font-size:10px;letter-spacing:2.2px;display:flex;align-items:center;gap:10px;font-weight:600}.eyebrow>span{width:6px;height:6px;background:#4268df;border-radius:50%}h1{font-size:52px;line-height:1.32;letter-spacing:-1.8px;font-weight:650;margin:26px 0 20px}h1>span{color:#4668d8}.checkout-intro>p{color:#7c8699;font-size:14px;line-height:1.8}.intro-art{position:relative;height:260px;max-width:360px;margin-top:30px;display:grid;place-items:center}.orbit{position:absolute;border:1px solid #e2e7f2;border-radius:50%;width:256px;height:256px}.orbit.two{width:328px;height:328px;border-style:dashed;opacity:.6}.art-card{transform:rotate(-10deg);width:208px;height:140px;border:1px solid #fff;border-radius:16px;background:linear-gradient(130deg,#e0e8ff,#fafcff);box-shadow:0 20px 36px #324b8617;position:relative;padding:22px 23px;color:#5574d8}.art-card>span{font-size:9px;letter-spacing:2px;display:inline-block;vertical-align:top;margin:12px 0 0 10px}.art-line{height:5px;background:#b6c5ec;width:68px;border-radius:4px;margin-top:12px}.art-dots{letter-spacing:2px;font-size:12px;margin-top:10px;color:#99addd}.art-check{position:absolute;bottom:-14px;right:12px;background:#fff;padding:9px;border-radius:50%;color:#3eae91;box-shadow:0 5px 20px #273d761a}.floating-chip{position:absolute;left:6px;bottom:50px;display:flex;align-items:center;gap:7px;background:#fff;padding:11px 14px;border-radius:8px;box-shadow:0 5px 20px #3c508312;font-size:9px;letter-spacing:1.1px;color:#6c7e9a}.trust{font-size:12px;color:#8b96a8;display:flex;gap:8px;align-items:center;margin-top:18px}.payment-card{background:#fff;border:1px solid #e4e8f0;border-radius:19px;box-shadow:0 14px 45px #243b7310;padding:30px;overflow:hidden}.dev-banner{font-size:10px;background:#fff5de;color:#98742e;text-align:center;margin:-30px -30px 24px;padding:9px;letter-spacing:.4px}.merchant{display:flex;gap:12px;align-items:center}.merchant-avatar{width:40px;height:40px;display:grid;place-items:center;background:#edf1fb;border-radius:11px;font-weight:650;color:#5068a5}.merchant>div{display:grid;gap:5px;flex:1}.merchant small{font-size:10px;color:#9ca5b3}.merchant strong{font-size:13px;overflow-wrap:anywhere}.merchant>svg{color:#adb7c8}.payment-summary{padding:22px 0 25px;border-bottom:1px solid #eef0f5}.payment-summary>p{font-size:14px;color:#66738b;line-height:1.6;margin:0 0 23px;overflow-wrap:anywhere}.payment-summary>small{font-size:11px;color:#8b95a6}.amount{font-size:34px;line-height:1.5;font-weight:650;letter-spacing:-1px;overflow-wrap:anywhere;font-variant-numeric:tabular-nums}.section-label{font-size:12px;margin:26px 0 13px;font-weight:600;color:#64718a}.methods{display:grid;gap:10px}.method{display:flex;align-items:center;text-align:left;gap:12px;background:#fff;border:1px solid #e4e8ef;border-radius:10px;padding:15px 13px;width:100%;color:#263651}.method.selected{border:1.5px solid #5475df;background:#f8faff;padding:14.5px 12.5px}.method:hover{background:#f8faff}.method>span:nth-child(2){flex:1;display:grid;gap:6px}.method strong{font-size:13px;font-weight:600}.method small{font-size:10px;color:#919bad;line-height:1.5}.channel-icon{border-radius:9px;padding:8px;display:grid;place-items:center}.wechat{color:#16a566;background:#e9f8f0}.alipay{color:#2285dc;background:#eaf4ff}.radio{border:1.4px solid #d4dae5;width:15px;height:15px;border-radius:50%;display:grid;place-items:center;flex-shrink:0}.selected .radio{border-color:#496bda}.radio>span{width:7px;height:7px;border-radius:50%;background:#496bda}.primary{background:#345bd7;color:#fff;border:0;width:100%;padding:15px 16px;border-radius:9px;display:flex;gap:10px;justify-content:center;align-items:center;font-size:13px;font-weight:600;margin-top:24px;line-height:1.5}.primary:hover{background:#254ac4;box-shadow:0 5px 13px #345bd728}.primary svg{flex-shrink:0}.receipt{border-top:1px solid #eef0f5;padding-top:20px;margin-top:24px;display:flex;gap:8px;flex-wrap:wrap;justify-content:space-between;font-size:9px;color:#9ba5b6}.receipt code{font-size:9px;word-break:break-all}.card-foot{font-size:10px;color:#9ba5b6;display:flex;justify-content:center;gap:7px;margin-top:20px}.active-payment{text-align:center;padding-top:24px}.status-tag{display:inline-flex;align-items:center;gap:7px;background:#eef3fe;padding:7px 11px;border-radius:30px;font-size:11px;color:#5575c6}.status-tag>span{width:5px;height:5px;border-radius:50%;background:#5475df}.qr{display:block;width:220px;max-width:100%;height:auto;margin:20px auto 10px}.active-payment p{font-size:13px;line-height:1.6;color:#67758c}.active-payment>small{display:block;font-size:10px;color:#98a1b2;line-height:1.6}.mobile-hint{display:none!important}.text-button{border:0;background:none;color:#4a68c4;padding:16px 0;font-size:12px}.error{margin:18px 0 0;background:#fff3ef;border:1px solid #fbe0d5;border-radius:8px;padding:12px;color:#ae634d;font-size:12px;line-height:1.5;display:flex;gap:8px}.error>svg{flex-shrink:0;margin-top:1px}.result{text-align:center;padding:30px 8px 8px;color:#8896ad}.result h2{font-size:21px;color:#324664;font-weight:600}.result p{color:#8290a6;font-size:12px;line-height:1.8}.result.success>svg{color:#31a881}.center-state{min-height:400px;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;gap:14px;color:#7d8ca3}.center-state p,.center-state h2{font-size:14px;font-weight:400;line-height:1.7}.center-state button{background:#345bd7;color:#fff;border:0;padding:10px 20px;border-radius:8px}.spin{animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}footer{display:flex;align-items:center;gap:12px;border-top:1px solid #e3e7ef;padding:27px 0;font-size:10px;color:#97a1b3}.wordmark.small{font-size:20px;letter-spacing:-1px;color:#8592a8}footer>span:last-child{margin-left:auto}@media(max-width:1000px){.checkout-shell{padding:0 32px}main{gap:40px;grid-template-columns:1fr 420px}h1{font-size:44px}.intro-art{transform:scale(.85);transform-origin:left center}}@media(max-width:760px){.checkout-shell{padding:0 20px}header{height:80px}.secure-title{font-size:11px}.brand-divider{margin:0 3px}main{display:block;padding:16px 0 38px}.checkout-intro{display:none}.payment-card{max-width:454px;margin:auto;padding:26px}.dev-banner{margin:-26px -26px 22px}.mobile-hint{display:block!important}footer{font-size:9px;flex-wrap:wrap;justify-content:center}footer>span:last-child{margin-left:0}.amount{font-size:32px}.language{gap:5px}.language select{font-size:11px}.receipt{font-size:9px}.wordmark{font-size:25px}.brand-icon{width:28px;height:28px;font-size:24px}}@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}.scene-picker{display:flex;flex-direction:column;gap:8px;margin:18px 0;color:#667993;font-size:13px;text-align:left}.alipay-qr-panel{text-align:center}.alipay-qr{display:block;margin:12px auto;border:0;background:#fff}.scene-picker select{width:100%;min-height:44px;border:1px solid #dce4f2;border-radius:8px;background:#fff;padding:10px;color:#243752;font:inherit}