.fl-hero{background:linear-gradient(135deg,#1E6B4C 0%,#2E8A64 50%,#1D5FA8 100%)}
.fl-hero .wrap{padding-top:28px;padding-bottom:30px}
.fl-ws{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:14px;align-items:start}
.fl-canvas-pane{min-height:520px}
.fl-canvas{flex:1;overflow:auto;background:#FBFAFD;background-image:radial-gradient(#E3DDEC 1px,transparent 1px);background-size:18px 18px;height:min(70vh,680px);min-height:420px}
.fl-canvas svg{display:block;margin:0 auto;max-width:none}
.mini{width:30px;height:30px;border-radius:8px;border:1px solid var(--line);background:#fff;font-weight:700;cursor:pointer}
.mini-sel{height:30px;border-radius:8px;border:1px solid var(--line);background:#fff;font:inherit;font-size:14px;padding:0 6px}
.fl-side{display:grid;gap:14px}
.run-ctrl{display:flex;gap:6px;flex-wrap:wrap;padding:10px 12px 0}
.console{margin:10px 12px 0;background:#1F1A2B;color:#EDE7F6;border-radius:10px;padding:10px 12px;min-height:110px;max-height:200px;overflow:auto;font:15px/1.6 Menlo,Consolas,'Sarabun',monospace;white-space:pre-wrap}
.console .muted{color:#8C84A0}
.console .in{color:#FFC94D}
.console .err{color:#FF9C8F}
.console .ok{color:#7BD389}
.in-row{display:flex;gap:6px;align-items:center;padding:8px 12px 0;flex-wrap:wrap}
.in-row label{font-weight:600;color:var(--accent)}
.in-row input{flex:1;min-width:120px;min-height:38px;border:2px solid var(--accent);border-radius:9px;padding:0 10px;font:inherit}
.vars{padding:10px 12px 12px}
.vars table{width:100%;border-collapse:collapse;font-size:15px}
.vars td{border-bottom:1px solid var(--line);padding:4px 6px}
.vars td:first-child{font-weight:600;width:45%}
.vars tr.changed td{background:#FFF4D6}
.vars .muted{color:var(--muted)}
.code-out pre{margin:0;padding:12px 14px;font:14px/1.6 Menlo,Consolas,'Sarabun',monospace;white-space:pre;overflow:auto;max-height:260px;background:#fff}
.ctabs{display:flex;gap:4px}
.ctabs button{border:0;background:transparent;font-family:var(--head);font-weight:500;font-size:15px;padding:2px 8px;border-bottom:2px solid transparent;cursor:pointer;color:var(--ink-2)}
.ctabs button[aria-selected="true"]{color:var(--accent);border-bottom-color:var(--accent)}
/* สัญลักษณ์ใน SVG */
.fl-node{cursor:pointer}
.fl-node:hover .shape{stroke-width:3}
.fl-node.active .shape{stroke:#E8A300;stroke-width:4;filter:drop-shadow(0 0 6px rgba(232,163,0,.6))}
.fl-node.err .shape{stroke:#C0392B;stroke-width:4}
.fl-plus{cursor:pointer}
.fl-plus circle{fill:#fff;stroke:#8C84A0;stroke-width:1.5}
.fl-plus:hover circle{fill:#FFC94D;stroke:#C98A00}
.fl-plus text{font:700 15px Prompt,sans-serif;fill:#5C5766;pointer-events:none}
.running .fl-plus{display:none}
.fl-path{stroke:#5C5766;stroke-width:1.8;fill:none}
.fl-path.hot{stroke:#E8A300;stroke-width:3}
.fl-lbl{font:600 13px Sarabun,sans-serif;fill:#5C5766}
.fl-txt{font:600 15px Sarabun,sans-serif;fill:#221F29;pointer-events:none}
/* เมนูแทรก */
.ins-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px}
.ins-btn{display:flex;flex-direction:column;align-items:center;gap:6px;border:1.5px solid var(--line);border-radius:12px;background:#fff;padding:10px;cursor:pointer;font:inherit}
.ins-btn:hover{border-color:var(--accent);background:var(--accent-soft)}
.ins-btn b{font-family:var(--head);font-weight:600}
.ins-btn small{color:var(--muted);font-size:13px;text-align:center}
.ins-btn[disabled]{opacity:.4;cursor:not-allowed}
.form-grid{display:grid;gap:10px}
.form-err{color:var(--red);font-weight:600;min-height:1.2em;margin:4px 0 0}
.sym-legend{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:8px 16px}
.sym-legend div{display:flex;align-items:center;gap:10px;font-size:15px}
.sym-legend svg{flex:0 0 auto}
.tests-res li .io{font-family:Menlo,Consolas,'Sarabun',monospace;font-size:13.5px;color:var(--muted)}
@media (max-width:900px){.fl-ws{grid-template-columns:1fr}.fl-canvas{height:60vh}}