:root{color-scheme:light;--ink:#172b3a;--muted:#5d7080;--line:#d9e2e8;--blue:#165dde;--bg:#f3f6fa;--panel:#fff;--green:#087758}*{box-sizing:border-box}body{margin:0;font:16px/1.5 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--bg)}button,input,select,textarea{font:inherit}button{cursor:pointer;border:1px solid var(--line);background:white;color:var(--ink);border-radius:6px;padding:8px 13px;min-height:40px}button:hover{border-color:var(--blue);color:var(--blue)}button:disabled{opacity:.5;cursor:not-allowed}button.primary{background:var(--blue);color:white;border-color:var(--blue)}button.danger{color:#b02b39}button.quiet{background:transparent}input,select,textarea{width:100%;border:1px solid #acbbc7;border-radius:5px;padding:9px;background:white;color:var(--ink)}textarea{min-height:88px;resize:vertical}label{display:block;font-size:14px;font-weight:600;margin:14px 0 5px}button:focus-visible,a:focus-visible,input:focus,select:focus,textarea:focus{outline:3px solid #93b9ff;outline-offset:2px}header{height:88px;padding:0 28px;display:flex;align-items:center;justify-content:space-between;background:var(--panel);border-bottom:1px solid var(--line);gap:18px}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink);font-weight:700;font-size:19px;line-height:1.2}.brand small{display:block;font-size:11px;letter-spacing:2px;margin-top:6px;color:var(--muted)}.logo{display:grid;place-items:center;width:40px;height:40px;background:var(--ink);color:white;border-radius:8px}.global-actions{display:flex;gap:8px}.local-note{padding:10px 28px;background:#e8effa;color:#304c73;font-size:13px;display:flex;justify-content:space-between;gap:15px}#save-status{white-space:nowrap;font-weight:650}main{display:grid;grid-template-columns:230px minmax(0,1fr);min-height:calc(100vh - 130px)}aside{border-right:1px solid var(--line);padding:25px 16px;background:#f9fbfd;display:flex;flex-direction:column}.aside-heading{display:flex;align-items:center;justify-content:space-between;margin:0 8px 20px}.aside-heading h2{font-size:14px;text-transform:uppercase;letter-spacing:1px}.aside-heading button{padding:0 10px;min-height:30px}nav button{display:flex;justify-content:space-between;width:100%;text-align:left;margin:3px 0;border:0;background:transparent;font-size:14px}nav button.active{background:#dfeafa;color:#154b9c;font-weight:650}nav small{color:var(--muted)}.aside-bottom{margin-top:40px;font-size:13px;color:var(--muted)}.aside-bottom button{font-size:13px}.workspace{min-width:0;padding:30px}.page-head{display:flex;justify-content:space-between;gap:18px;align-items:flex-start;margin-bottom:24px}.page-head h1{font-size:28px;letter-spacing:-1px;margin:0 0 5px}.page-head p{color:var(--muted);margin:0;max-width:650px}.actions{display:flex;flex-wrap:wrap;gap:8px}.search{max-width:340px;margin-bottom:20px}.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}.card{background:white;border:1px solid var(--line);border-radius:8px;padding:20px;display:flex;flex-direction:column}.card h2{font-size:19px;margin:12px 0 8px;line-height:1.3}.card p{font-size:14px;color:var(--muted);margin:0 0 20px;flex:1}.card .meta{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.6px}.card .open{align-self:flex-start}.card .mini{height:36px;display:flex;align-items:center;gap:8px;color:#9ab0c4}.mini i{width:13px;height:13px;border-radius:50%;border:2px solid #7d9fc9}.mini span{height:2px;width:35px;background:#c9d9ed}.editor-toolbar{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:16px}.graph-shell{background:#fff;border:1px solid var(--line);border-radius:8px;overflow:auto;position:relative}.graph-help{font-size:12px;color:var(--muted);padding:10px 16px;border-bottom:1px solid var(--line)}svg{display:block;width:100%;min-width:500px;height:460px;touch-action:none;background-color:#fbfdff;background-image:radial-gradient(#dce5ef 1px,transparent 1px);background-size:20px 20px}.node{cursor:grab}.node circle{fill:#fff;stroke:#71889e;stroke-width:2}.node.initial circle{fill:#e2edff;stroke:#2465d6}.node.final circle{fill:#ddf4ed;stroke:#188268;stroke-width:4}.node.decision circle{fill:#fff3d7;stroke:#bb8527}.node.current circle{stroke:#d2416a;stroke-width:5}.node text{fill:var(--ink);font-size:13px;pointer-events:none}.edge{fill:none;stroke:#7990a7;stroke-width:1.8}.edge-label{font-size:11px;fill:#38566f;paint-order:stroke;stroke:#fff;stroke-width:5px;stroke-linejoin:round}.lower{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:20px}.panel{background:white;border:1px solid var(--line);border-radius:8px;padding:20px;min-width:0}.panel h2{font-size:18px;margin:0 0 14px}.row{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:12px 0;border-bottom:1px solid #e6ecf1}.row:last-child{border:0}.row span{overflow-wrap:anywhere}.row small{display:block;color:var(--muted);font-size:12px}.row button{font-size:13px;padding:5px 9px}.row-actions{display:flex;gap:5px;flex-shrink:0}.simulation{grid-column:1/-1}.sim-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.simulation textarea{font-family:ui-monospace,monospace;font-size:14px}.simulation pre{white-space:pre-wrap;font-size:13px;overflow-wrap:anywhere}.hint{font-size:13px;color:var(--muted)}.validation{font-size:14px;padding:12px 0;white-space:pre-line}.empty{padding:40px;border:1px dashed #afbdca;border-radius:8px;color:var(--muted)}dialog{border:1px solid var(--line);border-radius:10px;padding:24px;width:min(540px,calc(100vw - 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