:root{--bg: #080c16;--panel: #0e1626;--line: #1e3050;--cyan: #6ef2d5;--magenta: #ff4fd8;--text: #cfe3ff;--dim: #5f7aa8;--code-dim: #4b5b7a}@keyframes pulse-change{0%{transform:scale(1);box-shadow:0 0 0 transparent}40%{transform:scale(1.16);box-shadow:0 0 14px color-mix(in srgb,var(--magenta) 75%,transparent)}to{transform:scale(1);box-shadow:0 0 0 transparent}}@keyframes pulse-jump{0%{transform:scale(1);box-shadow:0 0 0 transparent}40%{transform:scale(1.1);box-shadow:0 0 12px color-mix(in srgb,var(--cyan) 65%,transparent)}to{transform:scale(1);box-shadow:0 0 0 transparent}}@keyframes enter-slide{0%{transform:translateY(10px);opacity:0}to{transform:translateY(0);opacity:1}}@keyframes exit-fade{0%{transform:scale(1);opacity:1}to{transform:scale(.92);opacity:0}}body{background:var(--bg);color:var(--text);margin:0;font-family:system-ui,PingFang SC,Microsoft YaHei,sans-serif}.stage{display:grid;grid-template-columns:1.1fr 1fr 1fr;gap:12px;padding:14px;position:relative}.pane{background:var(--panel);border:1px solid var(--line);border-radius:8px;padding:9px}.pane-heap{overflow-x:auto}.code-line{display:flex;gap:8px;padding:1px 6px;border-radius:4px;font:13px/1.7 ui-monospace,Menlo,monospace;color:var(--code-dim);white-space:pre;position:relative}.code-line.on{color:var(--cyan);box-shadow:inset 2px 0 0 var(--cyan)}.code-no{color:var(--dim);min-width:2em;text-align:right}.line-actions{opacity:0;transition:opacity .15s ease;margin-left:10px}.code-line.on:hover .line-actions,.line-actions:focus-within{opacity:1}.line-actions button{background:var(--panel);border:1px solid var(--line);color:var(--cyan);border-radius:4px;font-size:11px;padding:1px 6px;cursor:pointer}.frame{border:1px solid var(--line);border-left:3px solid var(--cyan);border-radius:5px;padding:6px 8px;margin-bottom:6px}.frame.top{border-left-color:var(--magenta)}.fv{display:flex;justify-content:space-between;cursor:pointer;font:12px ui-monospace,monospace}.ref-dot{color:var(--magenta)}.obj{border:1px solid var(--magenta);border-radius:5px;padding:6px 8px;margin-bottom:8px}.ocells{display:flex;gap:4px;align-items:flex-end}.oc{width:28px;height:28px;display:flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:3px;font:12px ui-monospace,monospace;will-change:transform}.oc-idx{text-align:center;font-size:10px;color:var(--dim)}.oc-elided{color:var(--dim);font-size:11px;padding:0 6px;border-left:1px dashed var(--line);border-right:1px dashed var(--line)}.heap-more{color:var(--dim);font-size:12px}.arrow-layer{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none;width:100%;height:100%;color:var(--magenta);overflow:visible}.arrow{fill:none;stroke:var(--magenta);stroke-width:1.5;opacity:.8}.is-change{animation:pulse-change var(--anim-ms, .35s) ease}.is-jump{animation:pulse-jump var(--anim-ms, .6s) ease}.is-change-static{box-shadow:0 0 0 1px var(--magenta)}.is-jump-static{box-shadow:0 0 0 1px var(--cyan)}.controls{display:flex;gap:8px;align-items:center;padding:0 14px 14px}.controls button{background:var(--panel);border:1px solid var(--line);color:var(--cyan);border-radius:5px;padding:4px 10px;cursor:pointer}.controls [data-speed].on{border-color:var(--cyan)}.controls input[type=range]{flex:1}.counter{color:var(--dim);font-size:12px}.topbar{display:flex;align-items:center;gap:10px;padding:14px 14px 0}.topbar h1{font-size:18px;margin:0;color:var(--cyan);white-space:nowrap}.topbar select{flex:1;min-width:0;background:var(--panel);color:var(--text);border:1px solid var(--line);border-radius:5px;padding:4px 8px}.topbar button{background:var(--panel);border:1px solid var(--line);color:var(--cyan);border-radius:5px;padding:4px 10px;cursor:pointer;white-space:nowrap}.status{padding:6px 14px;color:var(--dim);font-size:13px;min-height:1.2em}.status-error{color:var(--magenta)}.status button[data-act=retry]{margin-left:8px;background:var(--panel);border:1px solid var(--magenta);color:var(--magenta);border-radius:5px;padding:2px 8px;cursor:pointer}.editor{display:flex;flex-direction:column;gap:8px;padding:0 14px 14px}.editor-wrap{display:flex;background:var(--panel);border:1px solid var(--line);border-radius:8px;overflow:hidden}.editor-nos{color:var(--dim);font:13px/1.5 ui-monospace,Menlo,monospace;white-space:pre;text-align:right;padding:8px 6px 8px 0;overflow:hidden;-webkit-user-select:none;user-select:none}.editor-code{flex:1;min-height:140px;background:transparent;color:var(--text);font:13px/1.5 ui-monospace,Menlo,monospace;border:none;outline:none;resize:vertical;padding:8px 8px 8px 4px}.editor-stdin-label{color:var(--dim);font-size:12px}.editor-stdin{background:var(--panel);color:var(--text);border:1px solid var(--line);border-radius:8px;font:13px ui-monospace,Menlo,monospace;padding:6px 8px;resize:vertical}.pane-out{color:var(--dim);font:12px/1.5 ui-monospace,Menlo,monospace;margin-top:8px;white-space:pre-wrap;word-break:break-all}@media (max-width: 900px){.stage{grid-template-columns:1fr}}