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@media(max-width:700px){.scene-caption p{font-size:14px}.canvas{height:610px;min-height:610px}.flow{height:300px}.scene-heading h1{font-size:24px}.diagram{min-height:200px}.scene-caption p{min-height:70px}.filter-row button,.view-tabs button{font-size:13px}.model-label{display:none}.flow-toolbar{flex-direction:column;align-items:flex-start}.controls{align-self:flex-end}.sidebar-foot{font-size:12px}.scene-caption{margin:0 10px 12px}.flow-foot>span{font-size:11px}.source-card strong,.source-card span,.source-note{font-size:14px}.map-scroll svg{min-width:620px}}
@media(max-width:700px){.node-label{font-size:26px}.node-meta{display:none}.edge-text{font-size:16px}.scene-index{font-size:44px}.controls button{font-size:13px}}
#step-signal{display:none}@media(max-width:700px){.edge-tag,.edge-text{display:none}#step-signal{display:block;color:var(--accent);font:12px/1.7 monospace;margin-top:3px}.scene-caption p{margin-top:4px}}
@media(min-width:991px){.workspace{grid-template-rows:minmax(440px,1fr) 250px}.trace-scroll td{padding:5px 9px}.trace-scroll th{padding:6px 9px}.node-label{font-size:22px}.node-meta{font-size:13px}.edge-text{font-size:14px}}
/* Semantic diagrams: logical entities, typed relations, no implied hardware. */
.diagram-key{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:10px 24px 0;font-size:12px;color:var(--muted)}#relation-kind{color:var(--accent);font-size:13px}.logical-card{fill:var(--panel);stroke:var(--line);stroke-width:1.5}.node-current .logical-card{stroke:var(--accent);stroke-width:2;fill:color-mix(in srgb,var(--accent) 4%,var(--panel))}.logical-label{font-size:22px;fill:var(--ink);font-weight:550}.node-number{fill:var(--muted);font:14px monospace}.semantic-edge{fill:none;stroke:var(--accent);stroke-width:2}.semantic-edge.logical{stroke-dasharray:6 4}.semantic-edge.rejected{stroke:var(--fault)}.diagram-state{color:var(--accent);font-size:13px;line-height:1.6;margin-top:5px}.scene-caption p{min-height:0}.map-node.related-node rect{stroke:var(--accent);fill:color-mix(in srgb,var(--accent) 4%,var(--panel))}.map-scroll svg{min-width:650px}.map-legend{font-size:12px}.diagram{padding:8px 12px;min-height:210px}.diagram svg{max-height:none}.scene-heading{padding-top:8px;padding-bottom:8px}.scene-caption{margin-bottom:12px;padding:10px}.scene-caption p{font-size:14px}.diagram-key span:last-child{font-size:11px}.map-heading p{font-size:13px}
@media(max-width:700px){.logical-label{font-size:26px}.node-number{font-size:20px}.diagram-key{margin-left:18px;margin-right:18px}.diagram-key span:last-child{font-size:11px}.canvas{height:660px;min-height:660px}.diagram-state{font-size:14px}.diagram{padding:0 5px}.map-scroll svg{min-width:680px}.map-legend{font-size:12px}}

.source-kind{display:block;font-size:10px;letter-spacing:.04em;color:var(--muted);margin-bottom:7px}
/* IsoKit owns the mechanism SVG; the course state and relation semantics stay in app.js. */
.diagram .systems-iso{width:100%;height:100%;min-height:0;display:block;padding:0;border:0;border-radius:0;background:transparent;--ik-panel:var(--panel);--ik-top:var(--panel);--ik-front:color-mix(in srgb,var(--ink) 4%,var(--panel));--ik-side:color-mix(in srgb,var(--ink) 9%,var(--panel));--ik-line:var(--line);--ik-detail:color-mix(in srgb,var(--ink) 24%,var(--panel));--ik-live:var(--accent);--ik-ink:var(--muted);--ik-ink-hi:var(--ink);--ik-glow:var(--accent);--ik-weight-edge:1.25;--ik-weight-crease:.8;--ik-weight-fine:.7}
.systems-iso>svg{width:100%;height:100%;display:block;overflow:visible}.systems-iso .iso-shadow{fill:var(--ink);opacity:.045}.systems-iso .iso-base{--ik-top:color-mix(in srgb,var(--ink) 3%,var(--panel));--ik-front:color-mix(in srgb,var(--ink) 6%,var(--panel));--ik-line:var(--faint)}.systems-iso .node-current{--ik-line:var(--accent);--ik-detail:color-mix(in srgb,var(--accent) 45%,var(--panel));--ik-top:color-mix(in srgb,var(--accent) 5%,var(--panel));--ik-front:color-mix(in srgb,var(--accent) 12%,var(--panel));--ik-side:color-mix(in srgb,var(--accent) 18%,var(--panel))}.systems-iso .node-current .iso-base{--ik-line:color-mix(in srgb,var(--accent) 35%,var(--panel));--ik-top:color-mix(in srgb,var(--accent) 4%,var(--panel))}.systems-iso .iso-symbol{fill:none;stroke:var(--ik-line);stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}.systems-iso .iso-symbol-core{fill:var(--ik-detail);stroke:none}.systems-iso .iso-idle-dot{fill:var(--line)}.systems-iso .iso-node-label{font-size:27px;font-weight:550;fill:var(--ink);pointer-events:none}.systems-iso .node-current .iso-node-label{fill:var(--accent);font-weight:650}.systems-iso .iso-node-number{font:16px monospace;fill:var(--muted)}.systems-iso .iso-port{stroke:var(--accent);fill:none;stroke-width:1.5}.systems-iso .iso-local-mark circle:first-child{fill:var(--panel);stroke:var(--accent);stroke-width:1.5}.systems-iso .iso-local-mark circle:last-child{fill:var(--accent);stroke:none}.systems-iso .iso-wire-underlay{fill:none;stroke:var(--panel);stroke-width:7;stroke-linejoin:round}.systems-iso .semantic-edge{stroke-width:2;stroke-linejoin:round;stroke-linecap:round}.systems-iso .iso-travel-dot{fill:var(--accent);stroke:var(--panel);stroke-width:2.5;pointer-events:none;filter:drop-shadow(0 0 3px color-mix(in srgb,var(--accent) 35%,transparent))}.systems-iso .iso-label-bounds{pointer-events:none}.dark .systems-iso .iso-shadow{opacity:.18}
@media(max-width:700px){.systems-iso .iso-node-label{font-size:28px}.systems-iso .iso-node-number{font-size:20px}.diagram{min-height:235px}.canvas{height:690px;min-height:690px}}