:root{--background:#f4f6f8;--foreground:#17202a;--muted:#64748b;--line:#d8dee8;--panel:#fff;--accent:#1677ff;--accent-dark:#0f5ed7;--danger:#b42318}html,body{max-width:100vw;min-height:100%;overflow-x:hidden}body{color:var(--foreground);background:var(--background);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;margin:0;font-family:Arial,Microsoft YaHei,sans-serif}*{box-sizing:border-box}a{color:inherit}button,input{font:inherit}.shell{width:min(1120px,100vw - 32px);margin:0 auto;padding:40px 0}.workspace{grid-template-columns:minmax(0,1fr) 420px;align-items:start;gap:24px;display:grid}.summary,.payment-panel,.result-panel,.callback-panel{background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:24px;box-shadow:0 10px 32px #0f172a0f}.summary h1,.result-panel h1{margin:6px 0 12px;font-size:34px;line-height:1.12}.callback-panel{margin-top:24px}.callback-note{color:var(--muted);margin:0 0 16px;line-height:1.6}.summary p,.result-panel p{color:var(--muted);line-height:1.7}.eyebrow{color:#475569;letter-spacing:0;text-transform:uppercase;margin:0;font-size:12px;font-weight:700}dl{gap:12px;margin:24px 0 0;display:grid}dl div{border-top:1px solid var(--line);padding-top:12px}dt{margin-bottom:4px;font-size:13px;font-weight:700}dd{color:var(--muted);word-break:break-word;margin:0;line-height:1.5}.panel-header{justify-content:space-between;align-items:flex-start;gap:16px;margin-bottom:18px;display:flex}.panel-header h2{margin:4px 0 0;font-size:22px}.badge{color:#1d4ed8;background:#eef5ff;border:1px solid #b7cdf4;border-radius:999px;flex:none;padding:6px 10px;font-size:12px;font-weight:700}label{margin:14px 0 6px;font-weight:700;display:block}fieldset{border:0;min-width:0;margin:16px 0 0;padding:0}legend{margin-bottom:8px;font-weight:700}input{width:100%;height:42px;color:var(--foreground);background:#fff;border:1px solid #cbd5e1;border-radius:6px;padding:8px 10px}button{color:#fff;background:var(--accent);cursor:pointer;border:0;border-radius:6px;width:100%;height:44px;margin-top:18px;font-weight:700}button:hover{background:var(--accent-dark)}button:disabled{cursor:not-allowed;opacity:.65}code{color:#1e3a8a;overflow-wrap:anywhere;background:#eff6ff;border-radius:4px;max-width:100%;padding:2px 6px;display:inline-block}.status{color:#1e3a8a;background:#f3f7ff;border:1px solid #d7e3f7;border-radius:6px;margin-top:16px;padding:12px;line-height:1.5}.status.is-error{color:var(--danger);background:#fff1f2;border-color:#fecaca}.empty-callback{color:var(--muted);background:#f8fafc;border:1px dashed #cbd5e1;border-radius:6px;padding:14px;line-height:1.6}.callback-list{gap:12px;display:grid}.callback-item{border:1px solid var(--line);background:#fbfcfe;border-radius:8px;padding:14px}.callback-title{justify-content:space-between;align-items:center;gap:12px;margin-bottom:12px;display:flex}.callback-title strong{overflow-wrap:anywhere}.pill{border-radius:999px;flex:none;padding:4px 8px;font-size:12px;font-weight:700}.pill.is-ok{color:#166534;background:#dcfce7}.pill.is-fail{color:#991b1b;background:#fee2e2}.callback-fields{grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin:0}.callback-fields div{border-top:0;padding-top:0}details{margin-top:12px}summary{cursor:pointer;color:var(--accent-dark);font-weight:700}pre{color:#dbeafe;background:#17202a;border-radius:6px;max-height:280px;margin:10px 0 0;padding:12px;font-size:12px;line-height:1.5;overflow:auto}.order-link{color:var(--accent-dark);margin-top:14px;font-weight:700;display:inline-flex}.flow-options{background:#f8fafc;border:1px solid #cbd5e1;border-radius:8px;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;padding:6px;display:grid}.flow-option{color:#334155;cursor:pointer;border-radius:6px;grid-template-columns:16px minmax(0,1fr);align-items:start;gap:8px;min-height:82px;margin:0;padding:10px;display:grid}.flow-option.is-selected{color:#0f172a;background:#fff;box-shadow:inset 0 0 0 1px #8bb8ff}.flow-option input{width:16px;height:16px;accent-color:var(--accent);margin:2px 0 0}.flow-title,.flow-description{display:block}.flow-title{font-size:14px;font-weight:700}.flow-title em{color:#1d4ed8;background:#e0ecff;border-radius:999px;margin-left:6px;padding:2px 6px;font-size:11px;font-style:normal;display:inline-flex}.flow-description{color:var(--muted);margin-top:5px;font-size:12px;font-weight:400;line-height:1.45}.result-panel{max-width:680px}@media (max-width:820px){.shell{width:min(100vw - 24px,680px);padding:24px 0}.workspace{grid-template-columns:1fr}.summary h1,.result-panel h1{font-size:28px}.panel-header{display:grid}.badge{width:fit-content}.flow-options,.callback-fields{grid-template-columns:1fr}}