:root{--pay-bg: #FAFAF7;--pay-surface: #FFFFFF;--pay-fg: #161514;--pay-muted: #5C5A55;--pay-border: #E7E5DF;--pay-accent: #F5C518;--pay-success: #16A34A;--pay-danger: #DC2626;--pay-pending: #EA580C;--pay-mp: #00B1EA;--pay-tbk: #E50A1A;--pay-stripe: #635BFF;--pay-radius: 12px;--pay-radius-sm: 8px}*{box-sizing:border-box}html,body{height:100%}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,sans-serif;background:var(--pay-bg);color:var(--pay-fg);font-size:15px;line-height:1.5;-webkit-font-smoothing:antialiased}button,input,select{font:inherit;color:inherit}.shell{min-height:100vh;display:grid;place-items:start center;padding:24px 16px 64px}.card{width:100%;max-width:480px;background:var(--pay-surface);border:1px solid var(--pay-border);border-radius:var(--pay-radius);box-shadow:0 1px 3px #0000000a;overflow:hidden}.card-header{padding:18px 20px;border-bottom:1px solid var(--pay-border)}.card-header h1{margin:0;font-size:14px;font-weight:600;letter-spacing:.02em}.card-header small{color:var(--pay-muted);font-size:12px}.card-body{padding:20px}.brand-row{display:flex;align-items:center;gap:10px}.brand-mark{width:32px;height:32px;background:var(--pay-accent);color:var(--pay-fg);border-radius:6px;display:grid;place-items:center;font-weight:800;font-size:16px}.muted{color:var(--pay-muted)}.spinner{display:inline-block;width:18px;height:18px;border:2px solid var(--pay-border);border-top-color:var(--pay-fg);border-radius:50%;animation:spin .7s linear infinite;vertical-align:middle}@keyframes spin{to{transform:rotate(360deg)}}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:none;background:var(--pay-fg);color:#fff;padding:14px 18px;border-radius:var(--pay-radius-sm);font-weight:600;font-size:15px;cursor:pointer;width:100%;transition:opacity .15s,transform .15s}.btn:hover:not(:disabled){opacity:.92}.btn:active:not(:disabled){transform:translateY(1px)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-mp{background:var(--pay-mp);color:#fff}.btn-tbk{background:var(--pay-tbk);color:#fff}.btn-stripe{background:var(--pay-stripe);color:#fff}.btn-ghost{background:transparent;color:var(--pay-fg);border:1px solid var(--pay-border)}.error{margin:12px 0 0;padding:10px 14px;background:#fef2f2;color:#991b1b;border-radius:var(--pay-radius-sm);font-size:13px}