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var(--shadow);cursor:grab;border-radius:10px;transition:border-color .2s,box-shadow .2s,outline-color .2s}.bn-node:active{cursor:grabbing}.bn-node:hover{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent),0 4px 24px var(--shadow)}.bn-node.status-warning{border-color:var(--st-warning);box-shadow:0 0 0 1px var(--st-warning),0 4px 24px var(--shadow)}.bn-node.status-near{border-color:var(--st-near);box-shadow:0 0 0 1px var(--st-near),0 4px 24px var(--shadow)}.bn-node.status-critical{border-color:var(--st-critical);box-shadow:0 0 0 1px var(--st-critical),0 4px 24px var(--shadow),0 0 20px var(--st-critical)}@supports (color:color-mix(in lab,red,red)){.bn-node.status-critical{box-shadow:0 0 0 1px var(--st-critical),0 4px 24px var(--shadow),0 0 20px color-mix(in srgb,var(--st-critical) 25%,transparent)}}.bn-node.selected{outline:2px solid 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0}.bn-input{background:var(--bg-base);border:1px solid var(--border);width:100%;color:var(--text);border-radius:6px;outline:none;padding:6px 10px;font-size:12px}.bn-input:focus{border-color:var(--accent)}.bn-btn-primary{background:var(--accent-strong);color:var(--on-accent);cursor:pointer;border:none;border-radius:6px;padding:6px 10px;font-size:12px;font-weight:600}.bn-btn-primary:hover{filter:brightness(1.1)}.bn-btn-ghost{border:1px solid var(--border);color:var(--text-muted);cursor:pointer;background:0 0;border-radius:6px;padding:6px 10px;font-size:12px}.bn-btn-ghost:hover{color:var(--text);background:var(--bg-elevated)}.bn-btn-danger{background:var(--st-critical)}@supports (color:color-mix(in lab,red,red)){.bn-btn-danger{background:color-mix(in srgb,var(--st-critical) 15%,transparent)}}.bn-btn-danger{border:1px solid var(--st-critical);color:var(--st-critical);cursor:pointer;border-radius:6px;padding:6px 10px;font-size:12px;font-weight:600}.bn-diagram-name{border:none;border-bottom:1px solid var(--border);color:var(--text);text-overflow:ellipsis;background:0 0;outline:none;flex:0 200px;min-width:80px;padding:2px 4px;font-family:Inter,sans-serif;font-size:13px}.bn-diagram-name:focus{border-bottom-color:var(--accent)}@keyframes bn-spin{to{transform:rotate(360deg)}}.bn-spinner{border:2px solid var(--border);border-top-color:var(--accent);border-radius:50%;width:11px;height:11px;animation:.8s linear infinite bn-spin;display:inline-block}.bn-lesson-card{transition:border-color .2s}.bn-lesson-card:hover{border-color:var(--accent)}@supports (color:color-mix(in lab,red,red)){.bn-lesson-card:hover{border-color:color-mix(in srgb,var(--accent) 30%,var(--border))}}.bn-lesson-panel{background:var(--bg-surface);border-right:1px solid var(--border);color:var(--text);flex-shrink:0;padding:12px 14px 16px;overflow-y:auto}.bn-lesson-panel.is-collapsed{flex-direction:column;align-items:center;gap:8px;width:48px;padding:10px 0;display:flex;overflow:hidden}.bn-lesson-mark{border:1px solid var(--border);background:var(--bg-elevated);width:18px;height:18px;color:var(--text-muted);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;font-size:10px;font-weight:700;line-height:1;display:inline-flex;transform:translateY(1px)}.bn-lesson-mark.is-done{border-color:var(--st-healthy);background:var(--st-healthy)}@supports (color:color-mix(in lab,red,red)){.bn-lesson-mark.is-done{background:color-mix(in srgb,var(--st-healthy) 18%,transparent)}}.bn-lesson-mark.is-done{color:var(--st-healthy)}.bn-lesson-link{color:var(--text-muted);font-size:12px;text-decoration:none}.bn-lesson-link:hover{color:var(--text-strong)}.bn-lesson-progress{all:unset;box-sizing:border-box;width:100%;color:var(--text-muted);border:1px solid var(--border);background:var(--bg-elevated);cursor:pointer;border-radius:8px;gap:8px;padding:6px 10px;font-size:12px;display:flex}.bn-lesson-progress:hover{color:var(--text)}.bn-lesson-progress:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.bn-lesson-done{border:1px solid var(--st-healthy);background:var(--st-healthy)}@supports (color:color-mix(in lab,red,red)){.bn-lesson-done{background:color-mix(in srgb,var(--st-healthy) 8%,transparent)}}.bn-lesson-done{border-radius:8px;padding:10px 12px}.bn-link{color:var(--text-muted);text-decoration:none;transition:color .15s}.bn-link:hover{color:var(--text-strong)}@media(prefers-reduced-motion:reduce){.bn-spinner{animation-duration:2.4s}}.bn-ad-label{letter-spacing:.08em;text-transform:uppercase;color:var(--text-dim);margin:6px 0 4px;font-size:10px}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-ordinal{syntax:"*";inherits:false}@property --tw-slashed-zero{syntax:"*";inherits:false}@property --tw-numeric-figure{syntax:"*";inherits:false}@property --tw-numeric-spacing{syntax:"*";inherits:false}@property --tw-numeric-fraction{syntax:"*";inherits:false}@property --tw-outline-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}