.lab-hero{display:grid;gap:10px}.eyebrow{margin:0;color:var(--accent-strong);font-size:.78rem;font-weight:760;letter-spacing:.08em;text-transform:uppercase}.lab-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:34px}.lesson-panel{display:grid;gap:16px;align-content:start;padding:20px;border:1px solid var(--line);border-radius:8px;background:var(--surface);box-shadow:var(--shadow)}.lesson-panel h2,.lesson-panel p{margin:0}.panel-heading{display:flex;justify-content:space-between;gap:18px}.complexity{align-self:start;min-width:max-content;padding:4px 8px;border:1px solid var(--line);border-radius:999px;color:var(--muted);font-size:.78rem}.field-label{display:grid;gap:6px;color:var(--muted);font-size:.9rem}.field-label input{min-height:42px;padding:0 12px;border:1px solid var(--line);border-radius:6px;background:#fff;color:var(--text);font:inherit}.sort-bars{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));align-items:end;gap:8px;min-height:190px;padding:12px;border:1px solid var(--line);border-radius:8px;background:var(--surface-soft)}.sort-bar{display:grid;align-items:end;min-height:var(--height);border-radius:6px 6px 3px 3px;background:#286f6c;color:#fff;text-align:center;transition:min-height .18s ease,background .18s ease}.sort-bar[data-state=active]{background:#a45d3a}.sort-bar[data-state=compare]{background:#5c6470}.sort-bar span{padding:6px 0;font-weight:760}.bfs-grid{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:6px;padding:12px;border:1px solid var(--line);border-radius:8px;background:var(--surface-soft)}.search-compare,.order-grid{display:grid;gap:12px}.search-compare strong,.order-grid strong{display:block;margin-bottom:6px;color:var(--text);font-size:.9rem}.search-track,.token-row,.weighted-graph,.graph-map{display:flex;flex-wrap:wrap;gap:8px;padding:12px;border:1px solid var(--line);border-radius:8px;background:var(--surface-soft)}.search-track span,.token-row span,.weighted-graph span,.graph-map span{display:inline-grid;min-width:38px;min-height:34px;place-items:center;padding:5px 8px;border:1px solid var(--line);border-radius:6px;background:#fff;color:var(--text);font-weight:720}.search-track span[data-state=checked]{border-color:#a9b9b7;background:#d9e8e5}.search-track span[data-state=found]{border-color:#a45d3a;background:#a45d3a;color:#fff}.graph-map span:first-child,.graph-map span:last-child{border-color:var(--accent);color:var(--accent-strong)}.weighted-graph span{min-width:auto;font-size:.88rem}.complexity-chart{display:grid;gap:10px;padding:12px;border:1px solid var(--line);border-radius:8px;background:var(--surface-soft)}.complexity-row{display:grid;grid-template-columns:54px repeat(3,minmax(0,1fr));align-items:center;gap:8px}.complexity-row span{color:var(--muted);font-size:.82rem}.complexity-row i{display:block;width:calc(max(.04,var(--w))*100%);min-width:4px;height:12px;border-radius:999px;background:var(--accent)}.complexity-row i:nth-child(3){background:#5c6470}.complexity-row i:nth-child(4){background:#a45d3a}.chart-legend{display:flex;flex-wrap:wrap;gap:8px;color:var(--muted);font-size:.84rem}.chart-legend span{display:inline-flex;align-items:center;gap:6px}.chart-legend span:before{width:12px;height:8px;border-radius:999px;background:var(--accent);content:""}.chart-legend span:nth-child(2):before{background:#5c6470}.chart-legend span:nth-child(3):before{background:#a45d3a}.grid-cell{aspect-ratio:1;border:1px solid var(--line);border-radius:6px;background:#fff;color:var(--muted);font:inherit;font-weight:800;cursor:pointer}.grid-cell[data-state=start]{background:#286f6c;color:#fff}.grid-cell[data-state=goal]{background:#a45d3a;color:#fff}.grid-cell[data-state=blocked]{background:#202522;color:#fff}.grid-cell[data-state=visited]{background:#d9e8e5}.grid-cell[data-state=path]{background:#f1c96a}.lab-actions{display:flex;flex-wrap:wrap;gap:8px}.lab-actions button{min-height:40px;padding:0 14px;border:1px solid var(--accent);border-radius:6px;background:var(--accent);color:#fff;font:inherit;font-weight:720;cursor:pointer}.lab-actions button+button{border-color:var(--line);background:#fff;color:var(--text)}.status-note{color:var(--muted);font-size:.94rem}.lesson-panel pre{overflow-x:auto;margin:0;padding:14px;border-radius:8px;background:#202522;color:#f6f7f4;font-size:.86rem}@media(max-width:860px){.lab-grid{grid-template-columns:1fr}.panel-heading{flex-direction:column}}