:root{--paper:#f3f5f7;--receipt:#fff;--ink:#172736;--muted:#677989;--line:#e4e9ed;--alipay:#1677ff;--input:#f6f8fb;--success:#16774b}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:15px/1.65 "PingFang SC","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased}header,footer{max-width:1184px;margin:auto;display:flex;align-items:center;justify-content:space-between;padding:32px}header{border-bottom:1px solid var(--line)}a{color:inherit;text-decoration:none}.brand{font-weight:800;letter-spacing:2px;font-size:22px}.brand span{font-size:13px;font-weight:400;letter-spacing:0;margin-left:16px;border-left:1px solid var(--line);padding-left:16px}.secure{font-size:12px;color:var(--muted)}main{max-width:1120px;margin:72px auto 88px;padding:0 32px;display:grid;grid-template-columns:1fr 440px;gap:64px;align-items:center}.eyebrow{font-size:12px;letter-spacing:3px;color:var(--muted)}h1{font-size:42px;line-height:1.45;letter-spacing:-1px;margin:24px 0;font-weight:650}.intro p{color:var(--muted);line-height:2}.steps{display:flex;flex-direction:column;gap:12px;margin-top:48px;font-size:12px;color:var(--muted);letter-spacing:1px}.receipt{background:var(--receipt);border-radius:12px;box-shadow:0 0 0 1px rgba(23,39,54,.04),0 8px 32px rgba(23,39,54,.04);overflow:hidden}.receipt-head{padding:24px 32px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;font-size:13px;font-weight:600}.tag{color:var(--alipay);background:#eef5ff;border-radius:4px;padding:4px 12px}.receipt-body{padding:32px}h2{font-size:22px;margin:0;font-weight:650}.sub{margin:8px 0 32px;color:var(--muted);font-size:13px}label{font-size:12px;color:var(--muted);display:block;margin-bottom:8px}.amount-wrap{background:var(--input);border:1px solid var(--line);border-radius:8px;padding:16px;display:flex;align-items:center;gap:12px}.amount-wrap:focus-within{outline:2px solid var(--alipay);outline-offset:2px}.amount-wrap span{font-size:24px;color:var(--muted)}input{width:100%;min-width:0;background:transparent;border:0;outline:0;color:var(--ink);font:500 36px/1.3 "Microsoft YaHei",sans-serif;font-variant-numeric:tabular-nums}input::placeholder{color:#a6b3bf}.hint{font-size:12px;color:var(--muted);margin:12px 0 28px}.summary{display:flex;justify-content:space-between;font-size:13px;padding:20px 0;border-top:1px dashed var(--line)}.summary span{color:var(--muted)}.summary strong{font-weight:500}button{min-height:48px;width:100%;border:0;border-radius:8px;background:var(--alipay);color:white;font:600 15px "Microsoft YaHei",sans-serif;padding:16px;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:20px;transition:transform 140ms,opacity 140ms}button:hover{opacity:.9}button:active{transform:scale(.98)}button:focus-visible,a:focus-visible{outline:3px solid var(--alipay);outline-offset:4px}button:disabled{background:#dde5ef;color:#738496;cursor:default;transform:none}.message{margin:16px 0 0;color:var(--muted);font-size:13px;min-height:22px}.receipt-foot{padding:20px 32px;border-top:1px dashed var(--line);font-size:12px;color:var(--muted);display:flex;align-items:center;gap:8px}.dot{width:6px;height:6px;border-radius:50%;background:var(--muted)}footer{border-top:1px solid var(--line);font-size:12px;color:var(--muted);gap:16px}.status-icon{font-size:36px;color:var(--alipay);margin:12px 0}.paid{color:var(--success)}h3{font-size:22px;margin:0}#status-text{color:var(--muted);font-size:13px}dl{font-size:12px;padding:20px 0;border-top:1px dashed var(--line)}dt{color:var(--muted)}dd{margin:4px 0 16px;overflow-wrap:anywhere;font-variant-numeric:tabular-nums}.back{display:block;text-align:center;padding:16px;color:var(--muted);font-size:13px}[hidden]{display:none!important}@media(max-width:800px){header,footer{padding:24px}main{grid-template-columns:1fr;max-width:520px;gap:32px;margin:32px auto;padding:0 24px}.intro h1{font-size:30px;margin:16px 0}.intro p{font-size:13px}.steps{display:none}.receipt-body,.receipt-head{padding:24px}.receipt-foot{padding:16px 24px}.secure{font-size:10px}footer{flex-direction:column;align-items:flex-start;gap:4px}}@media(prefers-reduced-motion:reduce){button{transition:none}button:active{transform:none}}