:root{--bg:#f4f6fa;--card:#fff;--ink:#0f172a;--muted:#64748b;--line:#e2e8f0;--brand:#2563eb;--brand-d:#1d4ed8;--ok:#16a34a;--warn:#d97706;--bad:#dc2626;--shadow:0 1px 3px #0f172a14, 0 1px 2px #0f172a0f}*{box-sizing:border-box}body{background:var(--bg);color:var(--ink);margin:0;font:15px/1.5 -apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}.demo-header{color:#fff;background:#0f172a;align-items:baseline;gap:12px;padding:18px 24px;display:flex}.demo-header h1{letter-spacing:-.01em;margin:0;font-size:18px;font-weight:650}.demo-header-tag{color:#94a3b8;font-size:13px}.demo-header-env{color:#cbd5e1;background:#1e293b;border-radius:999px;padding:3px 10px;font-size:12px}.demo-header-key{align-items:center;gap:6px;margin-left:auto;display:flex}.demo-header-key input{color:#e2e8f0;background:#1e293b;border:1px solid #334155;border-radius:7px;width:190px;padding:5px 9px;font-family:ui-monospace,Menlo,monospace;font-size:12px}.demo-header-key input::placeholder{color:#64748b}.demo-main{grid-template-columns:1fr 1fr;gap:18px;max-width:980px;margin:24px auto;padding:0 20px;display:grid}@media (width<=760px){.demo-main{grid-template-columns:1fr}}.card{background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:12px;padding:18px 20px}.card h2{letter-spacing:.04em;color:var(--muted);margin:0 0 4px;font-size:14px}.card .hint,.hint{color:var(--muted);margin:0 0 14px;font-size:13px}.full{grid-column:1/-1}label{color:var(--muted);margin:10px 0 4px;font-size:12px;font-weight:600;display:block}input,select{border:1px solid var(--line);width:100%;color:var(--ink);background:#fff;border-radius:8px;padding:9px 11px;font-size:14px}input:focus,select:focus{border-color:var(--brand);outline:2px solid #bfdbfe}input[type=checkbox]{width:auto}label.check{color:var(--ink);text-transform:none;cursor:pointer;align-items:center;gap:8px;margin:14px 0 0;font-size:13px;font-weight:600;display:flex}.row{gap:10px;display:flex}.row>div{flex:1}button{cursor:pointer;border:1px solid var(--line);color:var(--ink);background:#fff;border-radius:8px;padding:9px 13px;font-size:13px;font-weight:600;transition:all .12s}button:hover:not(:disabled){border-color:var(--brand);color:var(--brand)}button:disabled{opacity:.45;cursor:not-allowed}button.primary{background:var(--brand);border-color:var(--brand);color:#fff}button.primary:hover:not(:disabled){background:var(--brand-d);color:#fff}button.happy{color:#15803d;border-color:#bbf7d0}button.happy:hover:not(:disabled){border-color:var(--ok);color:#166534;background:#f0fdf4}button.exception{color:#b91c1c;border-color:#fecaca}button.exception:hover:not(:disabled){border-color:var(--bad);color:#991b1b;background:#fef2f2}.actions{flex-wrap:wrap;gap:8px;margin-top:6px;display:flex}.group-label{letter-spacing:.05em;color:var(--muted);margin:14px 0 6px;font-size:11px;font-weight:700}.cass-code{color:inherit;opacity:.65;font-weight:500}.txn-head{align-items:center;gap:12px;margin-bottom:4px;display:flex}.badge{letter-spacing:.02em;color:#334155;background:#e2e8f0;border-radius:999px;padding:4px 12px;font-size:13px;font-weight:700}.mono{color:var(--muted);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px}.empty{color:var(--muted);font-size:13px;font-style:italic}.notice{border-radius:8px;margin:12px 0 2px;padding:9px 12px;font-size:13px;font-weight:600}.notice.warn{color:#92400e;background:#fef3c7;border:1px solid #fde68a}.notice.err{color:#991b1b;background:#fee2e2;border:1px solid #fecaca}.notice.ok{color:#166534;background:#dcfce7;border:1px solid #bbf7d0}ol.timeline{margin:8px 0 0;padding:0;list-style:none}ol.timeline li{border-left:2px solid var(--line);padding:0 0 14px 20px;position:relative}ol.timeline li:last-child{border-left-color:#0000}ol.timeline li:before{content:"";background:var(--brand);border-radius:50%;width:10px;height:10px;position:absolute;top:3px;left:-6px}ol.timeline .st{font-weight:700}ol.timeline .meta{color:var(--muted);font-size:12px}table.tb{border-collapse:collapse;width:100%;font-size:13px}table.tb td{border-bottom:1px solid var(--line);padding:6px 8px}table.tb td:last-child{text-align:right;font-family:ui-monospace,Menlo,monospace}.bal{align-items:center;gap:6px;font-weight:700;display:inline-flex}.dot{border-radius:50%;width:8px;height:8px}pre.log{color:#e2e8f0;white-space:pre-wrap;word-break:break-word;background:#0f172a;border-radius:10px;max-height:260px;margin:0;padding:14px;font-size:12px;overflow:auto}.log-row{border-bottom:1px solid #1e293b;margin-bottom:8px;padding-bottom:8px}.log-row .call{color:#7dd3fc}.log-row .code{color:#a3e635}.log-row .code.err{color:#fca5a5}