.sbd-node-rect { fill:#f9fafb; stroke:#cbd5e1; }
.sbd-node-text, .sbd-node-sub, .sbd-toggle { font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif; }
.sbd-node-text { font-size:13px; fill:#111827; font-weight:600; }
.sbd-node-sub { font-size:12px; fill:#374151; }
.sbd-toggle { font-size:16px; fill:#374151; }
.sbd-link { fill:none; stroke:#9ca3af; stroke-width:2; }
.sbd-ctrl { position: relative; z-index:1; display:flex; gap:6px; padding:6px; }
.sbd-ctrl button { border:1px solid #cbd5e1; background:#fff; padding:4px 8px; border-radius:6px; cursor:pointer; }
.sbd-ctrl button:hover { background:#f3f4f6; }

.sbd-tree{overflow:auto;}
.sbd-node-ghost .sbd-node-rect{ stroke-dasharray:4 3; opacity:.9; }

.sbd-node-spouse .sbd-node-rect{ stroke:#60a5fa; }
.sbd-link-spouse{ stroke:#60a5fa; stroke-width:2; }