:root{color-scheme:light;--bg:#f6f7f8;--surface:#fff;--text:#17191c;--muted:#555d68;--border:#d6dbe0;--action:#17191c;--focus:#1769aa;--success:#166534;--warning:#854d0e;--error:#991b1b;--radius:8px}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.5 system-ui,-apple-system,"Segoe UI",sans-serif}header,main,footer{max-width:1192px;margin:auto}header{display:flex;align-items:center;justify-content:space-between;padding:24px 32px;border-bottom:1px solid var(--border)}.brand{display:flex;align-items:center;gap:12px;color:var(--text);text-decoration:none;font-weight:700;font-size:20px}.mark{width:40px;height:40px;background:var(--action);color:#fff;display:grid;place-items:center;border-radius:var(--radius);font-size:28px}.brand-sub{display:block;font-size:10px;letter-spacing:.12em;font-weight:500;color:var(--muted)}main{padding:24px 32px 40px}h1{font-size:28px;line-height:1.2;margin:8px 0 12px;text-wrap:balance;letter-spacing:-.025em}h2{font-size:18px;line-height:1.3;margin:0}p{margin:0 0 16px;color:var(--muted)}.eyebrow{font-size:11px;letter-spacing:.12em;font-weight:700;margin:0}.intro{display:flex;justify-content:space-between;align-items:center;margin:16px 0 24px;gap:16px}.intro p:last-child{margin:0}.layout{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,1fr);gap:24px}.setup,.activity{display:flex;flex-direction:column;gap:16px}.card{padding:24px;border:1px solid var(--border);background:var(--surface);border-radius:var(--radius)}.section-title{display:flex;align-items:center;gap:12px;justify-content:flex-start;margin-bottom:16px}.step{border:1px solid var(--border);display:grid;place-items:center;width:28px;height:28px;border-radius:50%;font-size:13px;font-weight:700;flex-shrink:0}.hint,.small{font-size:13px;color:var(--muted)}.small{margin-left:auto;text-align:right}.hint{margin:8px 0 16px}.actions{display:flex;flex-wrap:wrap;gap:8px}button{font:inherit;font-size:14px;font-weight:600;min-height:44px;padding:10px 16px;border:1px solid var(--action);background:var(--action);color:#fff;border-radius:var(--radius);cursor:pointer}button:hover{filter:brightness(1.2)}button.secondary{background:#fff;color:var(--text);border-color:var(--border)}button.quiet{background:transparent;color:var(--text);border-color:transparent;text-decoration:underline;text-underline-offset:3px}button:disabled{opacity:.45;cursor:not-allowed}button:focus-visible,input:focus-visible,textarea:focus-visible,a:focus-visible{outline:3px solid var(--focus);outline-offset:3px}label{font-size:14px;font-weight:600;display:block;margin:16px 0 8px}input,textarea{font:inherit;width:100%;padding:12px;border:1px solid var(--border);border-radius:var(--radius);background:#fff;color:var(--text)}textarea{resize:vertical}input[type=number]{max-width:120px}form button{margin-top:8px}.badge{font-size:13px;font-weight:600;padding:8px 12px;border:1px solid var(--border);border-radius:99px;white-space:nowrap;background:#fff}.badge[data-mode=send]{color:var(--success);background:#f0fdf4;border-color:#bbd7c4}.badge[data-mode=observe]{color:var(--focus)}.run-control{border-top:1px solid var(--border);padding-top:16px;margin-top:16px}.run-control p{font-size:14px}.banner,#notice:not(:empty){padding:16px;margin-bottom:24px;border-radius:var(--radius);border:1px solid var(--border);background:#fff}.banner{color:var(--warning);border-color:#d7be8d;background:#fffaf0}#notice[data-error=true]{color:var(--error);border-color:#e1b2b2;background:#fff5f5}.events{max-height:340px;overflow:auto}.event{padding:12px 0;border-top:1px solid var(--border);font-size:14px;overflow-wrap:anywhere}.event time{display:block;color:var(--muted);font-size:12px;margin-bottom:4px}.event[data-kind=error]{color:var(--error)}.empty{font-size:14px;margin:16px 0}.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse;font-size:14px}th{text-align:left;color:var(--muted);font-size:12px;font-weight:500}th,td{padding:12px 8px;border-bottom:1px solid var(--border);overflow-wrap:anywhere}.status{font-size:12px}.note{padding:8px 4px}.note h2{font-size:14px;margin-bottom:12px}.note p{font-size:13px}.login{max-width:480px;margin:64px auto}.login h1{margin:12px 0}.login button{width:100%;margin-top:24px}footer{padding:24px 32px;border-top:1px solid var(--border);font-size:12px;color:var(--muted)}[hidden]{display:none!important}@media(max-width:720px){header,main,footer{padding-left:16px;padding-right:16px}.layout{grid-template-columns:1fr}.card{padding:20px}.intro{align-items:flex-start}.intro h1{font-size:26px}.brand-sub{font-size:9px}.small{max-width:115px}.login{margin:32px auto}button{max-width:100%}}@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}