.math-ds-panel{--ds-speed: 1.2s;--ds-node-size: 40px;--ds-level-gap: 64px;--ds-highlight: #f59e0b;--ds-visited: #10b981;--ds-path: #f59e0b;--ds-red: #ef4444;--ds-black: #1f2937}.math-ds-placeholder{padding:24px;text-align:center;color:var(--math-text-muted);background:var(--math-surface-alt);border:1px dashed var(--math-border);border-radius:var(--math-radius-md);font-size:14px;line-height:1.6}.math-ds-result{min-height:320px;position:relative;overflow-x:auto}.math-ds-viz{position:relative;min-height:280px;padding:12px}.math-ds-lastop{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;padding:6px 10px;background:var(--math-surface-alt);border-radius:var(--math-radius-sm);margin-bottom:12px;display:inline-block;color:var(--math-text-soft)}.math-ds-lastop .op{color:var(--math-primary);font-weight:600}.math-ds-lastop .note{color:var(--math-warning);margin-left:8px}.math-ds-bigo-table{display:grid;grid-template-columns:1fr 72px 72px 84px;gap:4px 10px;font-size:12px;padding:10px 12px;background:var(--math-surface-alt);border:1px solid var(--math-border-light);border-radius:var(--math-radius-sm);margin-bottom:12px}.math-ds-bigo-table .h{font-weight:600;color:var(--math-text-muted);font-size:11px;text-transform:uppercase;letter-spacing:.04em}.math-ds-bigo-table .op{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--math-text)}.math-ds-bigo-table .c{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--math-text-soft)}.math-ds-bigo-chip{display:inline-block;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:11px;padding:2px 6px;background:#ffffff40;color:inherit;border-radius:4px;margin-left:6px;font-weight:500}.math-btn-secondary .math-ds-bigo-chip,.math-btn-ghost .math-ds-bigo-chip{background:var(--math-primary-soft);color:var(--math-primary)}.math-ds-actions{gap:8px;flex-wrap:wrap}.math-ds-actions .math-btn{display:inline-flex;align-items:center;gap:6px}.math-ds-speed-field{flex:1 1 100%;width:100%}.math-ds-speed-control{--fill-pct: 47.37%;display:flex;align-items:center;gap:8px;padding:4px 8px 6px;background:var(--math-surface-alt);border:1px solid var(--math-border);border-radius:10px;height:54px;min-width:0;max-width:100%;box-sizing:border-box;overflow:hidden;transition:border-color .15s ease,box-shadow .15s ease,background .15s ease}.math-ds-speed-track{flex:1 1 0;min-width:0;display:flex;flex-direction:column;gap:4px;padding-top:2px}.math-ds-speed-ticks{position:relative;height:14px;flex:0 0 14px}.math-ds-speed-tick{position:absolute;top:0;transform:translate(-50%);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:10px;font-weight:600;line-height:14px;color:var(--math-text-muted);background:transparent;border:none;cursor:pointer;padding:0 4px;border-radius:4px;transition:color .15s ease,background .15s ease;-webkit-user-select:none;user-select:none;-webkit-tap-highlight-color:transparent}.math-ds-speed-tick:hover{color:var(--math-primary);background:var(--math-primary-soft)}.math-ds-speed-tick:active{transform:translate(-50%) scale(.94)}.math-ds-speed-tick:after{content:"";position:absolute;left:50%;top:100%;width:1px;height:3px;background:var(--math-border);transform:translate(-50%);margin-top:1px;pointer-events:none}.math-ds-speed-control:hover{border-color:var(--math-primary)}.math-ds-speed-control:focus-within{border-color:var(--math-primary);box-shadow:0 0 0 3px var(--math-primary-soft);background:var(--math-surface)}.math-ds-speed-slider{-webkit-appearance:none;appearance:none;flex:1 1 0;min-width:0;width:100%;height:8px;border-radius:999px;outline:none;cursor:pointer;padding:0;margin:0;background:linear-gradient(to right,var(--math-primary) 0%,var(--math-primary) var(--fill-pct),var(--math-border) var(--fill-pct),var(--math-border) 100%)}.math-ds-speed-slider::-webkit-slider-runnable-track{height:8px;background:transparent;border:none;border-radius:999px}.math-ds-speed-slider::-moz-range-track{height:8px;background:transparent;border:none;border-radius:999px}.math-ds-speed-slider::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:18px;height:18px;margin-top:-5px;border-radius:50%;background:#fff;border:3px solid var(--math-primary);box-shadow:0 2px 6px #c01c8e59;cursor:grab;transition:transform .12s ease,box-shadow .18s ease}.math-ds-speed-slider::-webkit-slider-thumb:hover{transform:scale(1.15);box-shadow:0 2px 8px #c01c8e80,0 0 0 6px var(--math-primary-soft)}.math-ds-speed-slider::-webkit-slider-thumb:active{cursor:grabbing;transform:scale(1.22)}.math-ds-speed-slider::-moz-range-thumb{width:18px;height:18px;border-radius:50%;background:#fff;border:3px solid var(--math-primary);box-shadow:0 2px 6px #c01c8e59;cursor:grab;transition:transform .12s ease,box-shadow .18s ease}.math-ds-speed-slider::-moz-range-thumb:hover{transform:scale(1.15);box-shadow:0 2px 8px #c01c8e80,0 0 0 6px var(--math-primary-soft)}.math-ds-speed-value{display:inline-flex;align-items:baseline;gap:0;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;font-weight:700;color:var(--math-primary);background:var(--math-primary-soft);padding:4px 8px;border-radius:7px;-webkit-user-select:none;user-select:none;flex:0 0 auto;cursor:text;transition:background .15s ease,box-shadow .15s ease;margin:0;line-height:1}.math-ds-speed-value:hover{background:#c01c8e2e}.math-ds-speed-value:focus-within{background:#c01c8e38;box-shadow:inset 0 0 0 1px var(--math-primary)}.math-ds-speed-prefix{opacity:.7;pointer-events:none;margin-right:1px}.math-ds-speed-num{width:32px;min-width:32px;box-sizing:content-box;border:none;background:transparent;color:inherit;font:inherit;font-variant-numeric:tabular-nums;text-align:center;padding:0;margin:0;outline:none;cursor:text;-moz-appearance:textfield;appearance:textfield}.math-ds-speed-num::-webkit-outer-spin-button,.math-ds-speed-num::-webkit-inner-spin-button{-webkit-appearance:none;appearance:none;margin:0}.math-ds-speed-num:focus{cursor:text}.math-ds-array{display:flex;flex-wrap:wrap;gap:0;padding:8px 0}.math-ds-array-cell{display:inline-flex;flex-direction:column;align-items:center;justify-content:space-between;min-width:52px;height:58px;border:1px solid var(--math-border);border-radius:var(--math-radius-sm);margin-right:-1px;background:var(--math-surface);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;transition:background var(--ds-speed),transform var(--ds-speed),border-color var(--ds-speed)}.math-ds-array-cell .idx{font-size:10px;color:var(--math-text-muted);padding-top:3px}.math-ds-array-cell .val{font-weight:600;font-size:14px;padding:6px 8px;color:var(--math-text)}.math-ds-array-cell.highlight{background:var(--ds-highlight);border-color:var(--ds-highlight)}.math-ds-array-cell.highlight .val{color:#fff}.math-ds-array-cell.found{background:var(--ds-visited);border-color:var(--ds-visited)}.math-ds-array-cell.found .val{color:#fff}.math-ds-array-cell.landing{animation:ds-cell-pop var(--ds-speed) both}.math-ds-linked{display:flex;align-items:center;flex-wrap:wrap;gap:0;padding:8px 0}.math-ds-linked-node{display:inline-flex;align-items:center;justify-content:center;min-width:48px;height:40px;padding:0 10px;background:var(--math-primary);color:#fff;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-weight:600;font-size:14px;border-radius:var(--math-radius-sm);transition:background var(--ds-speed),transform var(--ds-speed)}.math-ds-linked-node.highlight{background:var(--ds-highlight)}.math-ds-linked-node.found{background:var(--ds-visited)}.math-ds-linked-arrow{font-family:ui-monospace,monospace;color:var(--math-text-muted);padding:0 6px;font-size:16px;-webkit-user-select:none;user-select:none}.math-ds-buckets{display:flex;flex-direction:column;gap:2px}.math-ds-bucket{display:flex;align-items:center;min-height:36px;padding:4px 8px;border-bottom:1px solid var(--math-border-light);transition:background var(--ds-speed)}.math-ds-bucket .idx{font-family:ui-monospace,monospace;font-size:11px;width:48px;color:var(--math-text-muted);flex-shrink:0}.math-ds-bucket .chain{display:flex;gap:4px;flex-wrap:wrap;flex:1}.math-ds-bucket .chain .item{padding:3px 8px;background:var(--math-primary-soft);color:var(--math-primary);border-radius:4px;font-family:ui-monospace,monospace;font-size:12px}.math-ds-bucket.hit{animation:ds-bucket-hit var(--ds-speed) both}.math-ds-bucket.hit .item.target{background:var(--ds-highlight);color:#fff}.math-ds-stack,.math-ds-queue{display:flex;gap:4px;padding:12px 0}.math-ds-stack{flex-direction:column-reverse;align-items:flex-start}.math-ds-queue{flex-direction:row;overflow-x:auto}.math-ds-stack-item,.math-ds-queue-item{min-width:60px;height:36px;display:inline-flex;align-items:center;justify-content:center;background:var(--math-primary);color:#fff;border-radius:var(--math-radius-sm);font-family:ui-monospace,monospace;font-weight:600;font-size:13px;transition:transform var(--ds-speed),opacity var(--ds-speed)}.math-ds-stack-item.top,.math-ds-queue-item.front{box-shadow:0 0 0 3px var(--ds-highlight)}.math-ds-stack-item.landing,.math-ds-queue-item.landing{animation:ds-cell-pop var(--ds-speed) both}.math-ds-queue-markers{display:flex;gap:4px;font-size:10px;color:var(--math-text-muted);font-family:ui-monospace,monospace;margin-top:4px}.math-ds-tree{position:relative;width:100%;min-height:280px;overflow:auto}.math-ds-tree-svg{position:absolute;top:0;left:0;width:100%;height:100%;pointer-events:none}.math-ds-node{position:absolute;display:inline-flex;align-items:center;justify-content:center;width:var(--ds-node-size);height:var(--ds-node-size);border-radius:50%;background:var(--math-primary);color:#fff;font-family:ui-monospace,monospace;font-weight:600;font-size:13px;transform:translate(-50%,-50%);transition:left var(--ds-speed),top var(--ds-speed),background var(--ds-speed),box-shadow var(--ds-speed)}.math-ds-node.red{background:var(--ds-red)}.math-ds-node.black{background:var(--ds-black)}.math-ds-node.visited{background:var(--ds-visited)}.math-ds-node.path{box-shadow:0 0 0 3px var(--ds-path)}.math-ds-node.found{background:var(--ds-visited);box-shadow:0 0 0 3px var(--ds-highlight)}.math-ds-node .subscript{font-size:9px;opacity:.75;margin-left:2px}.math-ds-edge{stroke:var(--math-border);stroke-width:2;fill:none;transition:stroke var(--ds-speed),stroke-width var(--ds-speed)}.math-ds-edge.visited{stroke:var(--ds-visited);stroke-width:2.5}.math-ds-heap-array{display:flex;gap:0;padding:12px 0;margin-top:8px;border-top:1px dashed var(--math-border)}.math-ds-trie-label{font-family:ui-monospace,monospace;font-size:11px;fill:var(--math-text-soft);-webkit-user-select:none;user-select:none}.math-ds-node.word-end{box-shadow:0 0 0 3px var(--ds-visited)}.math-ds-node.rbt-red{background:var(--ds-red, #ef4444);color:#fff;border-color:#b91c1c}.math-ds-node.rbt-black{background:var(--ds-black, #1f2937);color:#fff;border-color:#111827}.math-ds-graph{position:relative;width:100%;min-height:320px}.math-ds-graph-edge{stroke:var(--math-border);stroke-width:2;fill:none}.math-ds-graph-edge.visited{stroke:var(--ds-visited);stroke-width:3}.math-ds-graph-edge.directed{marker-end:url(#math-ds-arrowhead)}.math-ds-uf-array{display:flex;flex-direction:column;gap:8px}.math-ds-uf-row{display:flex;align-items:center;gap:6px}.math-ds-uf-row .label{font-family:ui-monospace,monospace;font-size:11px;color:var(--math-text-muted);min-width:56px;text-align:right}.math-ds-uf-cell{display:flex;flex-direction:column;align-items:center;justify-content:center;min-width:40px;height:44px;border:1px solid var(--math-border);border-radius:6px;background:var(--math-surface-subtle);transition:background var(--ds-speed),border-color var(--ds-speed)}.math-ds-uf-cell.highlight{border-color:var(--ds-highlight);background:#f59e0b1f}.math-ds-uf-cell.ghost{opacity:.75}.math-ds-uf-cell .idx{font-size:10px;color:var(--math-text-muted)}.math-ds-uf-cell .val{font-size:13px;font-family:ui-monospace,monospace;color:var(--math-text)}.math-ds-uf-groups{margin-top:10px;font-size:12px;color:var(--math-text-soft);font-family:ui-monospace,monospace}.math-ds-uf-groups .label{color:var(--math-text-muted);margin-right:6px}.math-ds-uf-groups .grp{display:inline-block;margin-right:8px;padding:2px 8px;border:1px solid var(--math-border);border-radius:12px;background:var(--math-surface-subtle)}.math-ds-graph-node circle{fill:var(--math-surface-subtle);stroke:var(--math-border);stroke-width:2;transition:fill var(--ds-speed),stroke var(--ds-speed)}.math-ds-graph-node text{font-family:ui-monospace,monospace;font-size:13px;fill:var(--math-text)}.math-ds-graph-node.visited circle{fill:#22c55e40;stroke:var(--ds-visited);stroke-width:2.5}.math-ds-graph-order{font-size:10px;fill:var(--ds-visited);font-family:ui-monospace,monospace;font-weight:700}.math-ds-graph-edge.tracing{stroke:var(--ds-highlight);stroke-width:3}.math-ds-graph-edge-arrow{fill:var(--math-border)}@keyframes ds-cell-pop{0%{transform:scale(.6);opacity:0}60%{transform:scale(1.1);opacity:1}to{transform:scale(1);opacity:1}}@keyframes ds-node-land{0%{transform:translate(-50%,-50%) scale(0);opacity:0}60%{transform:translate(-50%,-50%) scale(1.15);opacity:1}to{transform:translate(-50%,-50%) scale(1);opacity:1}}@keyframes ds-node-leave{0%{transform:translate(-50%,-50%) scale(1);opacity:1}to{transform:translate(-50%,-50%) scale(0);opacity:0}}@keyframes ds-bucket-hit{0%,to{background:transparent}50%{background:#f59e0b2e}}@keyframes ds-path-trace{0%{stroke-dashoffset:40}to{stroke-dashoffset:0}}.math-ds-node.landing{animation:ds-node-land var(--ds-speed) both}.math-ds-node.leaving{animation:ds-node-leave var(--ds-speed) both}.math-ds-edge.tracing{stroke-dasharray:6 4;animation:ds-path-trace var(--ds-speed) linear both}@media(max-width:640px){.math-ds-bigo-table{grid-template-columns:1fr 56px 56px 64px;font-size:11px}.math-ds-array-cell{min-width:44px;height:52px}.math-ds-array-cell .val{font-size:13px}.math-ds-node{width:34px;height:34px;font-size:11px}.math-ds-panel{--ds-node-size: 34px;--ds-level-gap: 52px}}.math-ds-carrier{position:absolute;left:0;top:0;transform:translate(-50%,-50%) scale(0);pointer-events:none;z-index:14;display:inline-flex;align-items:center;gap:6px;min-width:44px;height:38px;padding:0 14px;border-radius:999px;font-family:ui-monospace,SF Mono,monospace;font-size:14px;font-weight:800;color:#fff;white-space:nowrap;background:linear-gradient(135deg,#c01c8e,#7d0f5e);box-shadow:0 8px 22px #4338ca8c,0 0 0 3px #ffffffd9,0 0 0 5px #c01c8e59;transition:left .55s var(--asc-ease, cubic-bezier(.4,0,.2,1)),top .55s var(--asc-ease, cubic-bezier(.4,0,.2,1)),transform .28s var(--asc-ease, cubic-bezier(.4,0,.2,1)),opacity .28s var(--asc-ease, cubic-bezier(.4,0,.2,1)),background .25s ease;opacity:0}.math-ds-carrier:after{content:"";position:absolute;left:50%;bottom:-6px;width:12px;height:12px;background:inherit;transform:translate(-50%) rotate(45deg);border-radius:2px;box-shadow:2px 2px #fff6;z-index:-1}.math-ds-carrier.visible{transform:translate(-50%,-50%) scale(1);opacity:1}.math-ds-carrier.dropping{transform:translate(-50%,-50%) scale(.4);opacity:0}.math-ds-carrier .carrier-label{opacity:.85;font-weight:600;margin-right:2px;font-size:11px;text-transform:uppercase;letter-spacing:.04em}.math-ds-carrier .carrier-value{font-weight:900;font-size:16px;letter-spacing:.02em}.math-ds-carrier.carrier-insert{background:linear-gradient(135deg,#c01c8e,#7d0f5e);box-shadow:0 8px 22px #4338ca8c,0 0 0 3px #ffffffd9,0 0 0 5px #c01c8e59}.math-ds-carrier.carrier-erase{background:linear-gradient(135deg,#f43f5e,#be123c);box-shadow:0 8px 22px #be123c8c,0 0 0 3px #ffffffd9,0 0 0 5px #f43f5e59}.math-ds-carrier.carrier-found{background:linear-gradient(135deg,#10b981,#059669);box-shadow:0 8px 22px #0596698c,0 0 0 3px #ffffffd9,0 0 0 5px #10b98159}.math-ds-carrier.carrier-pulsing{animation:ds-carrier-pulse 1s ease-in-out infinite}@keyframes ds-carrier-pulse{0%,to{filter:brightness(1) drop-shadow(0 0 0 transparent)}50%{filter:brightness(1.25) drop-shadow(0 0 8px rgba(192,28,142,.6))}}