:root,:root[data-theme=light]{--bg: #f7f7f5;--surface: #ffffff;--surface-raised: #ffffff;--surface-sunken: #f0f1ee;--border: #e2e3df;--border-strong: #d0d2cc;--text: #1c1d1b;--text-muted: #62655f;--text-faint: #94978f;--accent: #b5573a;--accent-hover: #9c4830;--accent-soft: rgba(181, 87, 58, .12);--accent-contrast: #ffffff;--node-text: #1c1d1b;--node-border: #ffffff;--edge: #c7c9c2;--edge-text: #8c8f86;--danger: #b3261e;--danger-soft: rgba(179, 38, 30, .1);--success: #3f7d4d;--shadow-sm: 0 1px 2px rgba(28, 29, 27, .06), 0 1px 1px rgba(28, 29, 27, .04);--shadow-md: 0 4px 12px rgba(28, 29, 27, .08), 0 2px 4px rgba(28, 29, 27, .04);--shadow-lg: 0 12px 32px rgba(28, 29, 27, .14), 0 4px 10px rgba(28, 29, 27, .06);--radius-sm: 8px;--radius-md: 12px;--radius-lg: 18px;--focus-ring: 0 0 0 3px rgba(181, 87, 58, .28);color-scheme:light}:root[data-theme=dark]{--bg: #16181a;--surface: #1e2124;--surface-raised: #24272b;--surface-sunken: #131517;--border: #33373b;--border-strong: #40454a;--text: #edeeec;--text-muted: #a7aaa5;--text-faint: #74786f;--accent: #e08659;--accent-hover: #ec9a70;--accent-soft: rgba(224, 134, 89, .16);--accent-contrast: #1c1200;--node-text: #edeeec;--node-border: #16181a;--edge: #43474b;--edge-text: #86897f;--danger: #e5766c;--danger-soft: rgba(229, 118, 108, .14);--success: #6bbf7b;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .32), 0 1px 1px rgba(0, 0, 0, .24);--shadow-md: 0 6px 16px rgba(0, 0, 0, .4), 0 2px 6px rgba(0, 0, 0, .28);--shadow-lg: 0 16px 40px rgba(0, 0, 0, .5), 0 6px 14px rgba(0, 0, 0, .3);--focus-ring: 0 0 0 3px rgba(224, 134, 89, .3);color-scheme:dark}*{box-sizing:border-box}html,body{height:100%}body{margin:0;display:flex;flex-direction:column;height:100vh;overflow:hidden;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:14px;line-height:1.45;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;transition:background-color .2s ease,color .2s 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var(--border);padding-left:16px}.header-actions{margin-left:auto;display:flex;align-items:center;gap:8px}.toolbar{flex:0 0 auto;display:flex;align-items:center;gap:14px;padding:10px 20px;background:var(--surface);border-bottom:1px solid var(--border);z-index:15;flex-wrap:wrap}.search-wrap{position:relative;flex:1 1 260px;max-width:360px;min-width:160px}.search-input{width:100%;padding:8px 12px;border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--surface-sunken);color:var(--text);font-size:13.5px;transition:border-color .15s ease,background-color .15s ease,box-shadow .15s ease}.search-input::placeholder{color:var(--text-faint)}.search-input:hover{border-color:var(--border-strong)}.search-input:focus{outline:none;background:var(--surface);border-color:var(--accent);box-shadow:var(--focus-ring)}.search-results{position:absolute;top:calc(100% + 6px);left:0;right:0;margin:0;padding:6px;list-style:none;background:var(--surface-raised);border:1px solid var(--border);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);max-height:320px;overflow-y:auto;z-index:30}.search-results[hidden]{display:none}.search-results li+li{margin-top:2px}.result-btn{display:flex;align-items:center;gap:8px;width:100%;padding:7px 10px;border:none;background:transparent;color:var(--text);font-size:13px;text-align:left;border-radius:var(--radius-sm);cursor:pointer;transition:background-color .12s ease}.result-btn:hover,.result-btn:focus-visible{background:var(--surface-sunken)}.result-dot{flex:0 0 auto;width:8px;height:8px;border-radius:50%;box-shadow:0 0 0 2px var(--surface-raised)}.view-controls{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-left:auto}.select-label{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--text-muted);white-space:nowrap}.select{padding:6px 10px;border-radius:var(--radius-sm);border:1px solid 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