:root{--ink:#0f172a;--ink-2:#475569;--muted:#64748b;--line:#e2e8f0;--glass:#ffffffd1;--shadow:0 10px 30px #0f172a24;--ok:#16a34a;--bad:#dc2626;--sans:system-ui, -apple-system, "Segoe UI", Roboto, Ubuntu, sans-serif;--mono:ui-monospace, "JetBrains Mono", "Fira Code", Consolas, monospace}*{box-sizing:border-box}html,body{height:100%;color:var(--ink);font:14px/1.5 var(--sans);background:#d8e6f3;margin:0;overflow:hidden}button{font:inherit;color:inherit;cursor:pointer}code{font-family:var(--mono);background:#f1f5f9;border-radius:4px;padding:1px 5px;font-size:.92em}.muted{color:var(--muted);font-weight:400}[hidden]{display:none!important}#stage,#stage canvas{position:fixed;inset:0}.labels{pointer-events:none;inset:0;position:fixed!important}.label{pointer-events:auto;background:var(--glass);backdrop-filter:blur(8px);box-shadow:var(--shadow);white-space:nowrap;border:1px solid #ffffffb3;border-radius:999px;align-items:center;gap:8px;padding:6px 10px 6px 8px;font-size:13px;font-weight:650;transition:transform .15s;display:flex}.label:hover{transform:translateY(-2px)}.label i{background:var(--c);width:10px;height:10px;box-shadow:0 0 0 3px color-mix(in srgb, var(--c) 25%, transparent);border-radius:50%}.label span{color:var(--muted);background:#f1f5f9;border-radius:999px;padding:1px 7px;font-size:11px;font-weight:600}.label span.full{background:var(--ok);color:#fff}#hud{background:var(--glass);backdrop-filter:blur(12px);width:290px;box-shadow:var(--shadow);border-radius:16px;padding:16px;position:fixed;top:16px;left:16px}.logo{letter-spacing:-.02em;font-size:22px;font-weight:800}.logo span{color:var(--ink-2);margin-left:4px;font-weight:400}.brand p{color:var(--ink-2);margin:2px 0 12px;font-size:13px}.prog-track{background:#e2e8f0;border-radius:999px;height:6px;overflow:hidden}#progress-bar{background:linear-gradient(90deg,#06b6d4,#22c55e);width:0;height:100%;transition:width .6s}.prog 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var(--line);background:#fff;border-radius:10px;align-items:center;gap:10px;width:100%;padding:9px 12px;font-weight:600;display:flex}.ex-list button:hover{border-color:var(--c)}.ex-list button.active{border-color:var(--c);background:color-mix(in srgb, var(--c) 7%, #fff)}.check{border:2px solid var(--line);color:#fff;border-radius:50%;flex:none;place-items:center;width:20px;height:20px;font-size:12px;display:grid}.check.on{background:var(--ok);border-color:var(--ok)}.ex{margin-top:16px;padding-top:4px;scroll-margin-top:90px}.prompt{font-size:15px}textarea{resize:vertical;color:#e2e8f0;width:100%;min-height:150px;font:13px/1.55 var(--mono);tab-size:2;background:#0f172a;border:1px solid #1e293b;border-radius:10px;outline:none;padding:12px 14px}textarea:focus{box-shadow:0 0 0 3px color-mix(in srgb, var(--c) 40%, transparent)}.actions{flex-wrap:wrap;gap:6px;margin:10px 0;display:flex}.btn{border:1px solid var(--line);background:#fff;border-radius:8px;padding:7px 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