:root{--bg:#f4f7fb;--panel:#ffffff;--ink:#10233e;--muted:#4b5d78;--accent:#006d77;--danger:#b42318;--ok:#027a48;--line:#d5ddea}*{box-sizing:border-box}body{margin:0;font-family:Segoe UI,Avenir Next,sans-serif;background:radial-gradient(circle at 10% 10%,#dceefe 0,transparent 35%),var(--bg);color:var(--ink)}main{max-width:960px;margin:0 auto;padding:28px 16px 40px}h1,h2,h3{margin:0 0 10px}p{margin:0 0 12px;color:var(--muted)}.card{background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:18px;margin-bottom:14px}.grid{display:grid;grid-gap:14px;gap:14px}.grid.two{grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}label{display:block;margin:0 0 8px;font-size:14px;color:var(--ink)}button,input,select{width:100%;border:1px solid var(--line);border-radius:10px;padding:10px 12px;font:inherit}input::placeholder{color:#8d9bb2}button{cursor:pointer;background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600}button.secondary{background:#fff;color:var(--ink)}button:disabled{cursor:not-allowed;opacity:.6}.row{display:flex;gap:10px}.row>*{flex:1 1}.badge{display:inline-block;padding:3px 8px;border-radius:999px;font-size:12px;font-weight:700}.badge.ok{background:#d1fadf;color:var(--ok)}.badge.fail{background:#fee4e2;color:var(--danger)}a{color:var(--accent);text-decoration:none}table{width:100%;border-collapse:collapse}td,th{text-align:left;border-bottom:1px solid var(--line);padding:8px 6px;font-size:14px}.checkoutMount{margin:20px 0 14px;padding:20px;border:1px solid var(--line);border-radius:16px;background:linear-gradient(180deg,#fbfdff,#f6fafe)}.checkoutHint{font-size:14px;color:var(--muted)}.statusNotice{border:1px solid #b7e0c7;background:#edfdf3;color:#0f5132;border-radius:10px;padding:10px 12px}.errorNotice{border:1px solid #f2b8b5;background:#fff3f2;color:var(--danger);border-radius:10px;padding:10px 12px;white-space:pre-wrap}.resultPanel{margin-top:14px;display:grid;grid-gap:12px;gap:12px}.resultBlock{border:1px solid var(--line);border-radius:12px;padding:12px;background:#f9fbfe}.resultBlock pre{margin:0;font:inherit;color:var(--ink);white-space:pre-wrap;word-break:break-word}.copyNotice{color:var(--ok);margin-bottom:0}.paymentMethodPanel{margin-top:14px;display:grid;grid-gap:14px;gap:14px}.amountBar{display:flex;align-items:center;justify-content:space-between;gap:12px;background:#edf5fd;border:1px solid #d4e1ee;border-radius:12px;padding:14px 16px;color:var(--ink)}.amountBar span{font-size:1rem;font-weight:700}.amountBar strong{font-size:clamp(1.8rem,4vw,2.4rem);line-height:1}.methodTabs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:10px;gap:10px}.methodTab{background:#f4f8fc;border:1px solid #d4e1ee;border-radius:12px;color:var(--ink);font-size:1rem;font-weight:700;min-height:50px}.methodTab.active{background:#9dc1c9;border-color:#9dc1c9;color:#ffffff}.paymentLead{color:var(--ink);font-size:1rem;font-weight:700}.cardWrap,.walletWrap{background:#ffffff;border-radius:16px;padding:18px;border:1px solid var(--line)}.walletWrap{display:grid;grid-gap:10px;gap:10px}.walletHint{margin:4px 0 0;color:var(--muted);font-size:13px}.checkoutFields{display:grid;grid-gap:10px;gap:10px;margin-bottom:14px}.checkoutFields.compact{grid-template-columns:repeat(2,minmax(0,1fr));column-gap:14px}.checkoutFields label{margin-bottom:0;font-weight:700}.cardWrap .checkoutFields label{color:var(--ink)}.cardWrap .checkoutFields input,.cardWrap .checkoutFields select{background:#ffffff;border-color:var(--line);min-height:48px}.checkoutMountCard{margin:0;background:#ffffff;border-radius:14px;padding:0;border:0}.payAction{margin-top:14px;background:#9dc1c9;border-color:#9dc1c9;color:#ffffff;font-size:1rem;min-height:54px}@media (max-width:720px){.amountBar{padding:12px 14px}.amountBar strong{font-size:2rem}.methodTab{min-height:52px;font-size:.95rem}.checkoutFields.compact{grid-template-columns:1fr}}