.math-lab{--lab-ink:#16324f;--lab-paper:#faf8f3;--lab-line:#cfd8e2;--lab-accent:#c4512d;--lab-teal:#1f6f61;color:var(--lab-ink);background:var(--lab-paper);border:1px solid var(--lab-line);border-left:4px solid var(--lab-ink);isolation:isolate;border-radius:6px;margin:22px 0;padding:16px 20px;font-family:Microsoft YaHei,PingFang SC,sans-serif;font-size:13px;line-height:1.55;overflow:hidden;box-shadow:0 4px 16px #16324f0a}.math-lab *,.math-lab :before,.math-lab :after{box-sizing:border-box}.math-lab p{margin:4px 0;font-size:12.5px;line-height:1.6}.math-lab button{font:inherit;cursor:pointer;border-radius:4px;transition:background .15s,color .15s,border-color .15s,transform .1s}.math-lab .inline-timestamp{font-family:var(--mono,Consolas, monospace);color:var(--lab-accent);white-space:nowrap;cursor:pointer;vertical-align:baseline;background:#f5ebe6;border:1px solid #e6cec2;border-radius:3px;align-items:center;gap:4px;margin:0 2px;padding:2px 8px;font-size:11px;font-weight:600;display:inline-flex}.math-lab .inline-timestamp:hover{border-color:var(--lab-accent);background:#ebd8ce;transform:translateY(-1px)}.lab-heading{border-bottom:1px solid #dde4ec;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px 16px;margin-bottom:12px;padding-bottom:10px;display:flex}.lab-heading-left{flex-wrap:wrap;align-items:center;gap:8px 10px;min-width:0;display:flex}.lab-kicker{letter-spacing:.08em;color:var(--lab-accent);white-space:nowrap;background:#f5e8e2;border:1px solid #e8cfc4;border-radius:3px;padding:2px 7px;font-family:Consolas,monospace;font-size:10px;font-weight:700}.lab-heading h4{color:var(--lab-ink);margin:0;font-family:Noto Serif SC,Source Han Serif SC,Georgia,serif;font-size:16px;font-weight:600;line-height:1.35}.lab-task-bar,.lab-lead,.lab-Lead{color:#3d5166;border-left:3px solid var(--lab-teal);background:#f2f5f9;border-radius:0 4px 4px 0;width:100%;margin:2px 0 0;padding:6px 11px;font-size:12.5px;line-height:1.65}.lab-task-bar b,.lab-lead strong,.lab-Lead strong{color:var(--lab-ink);font-weight:600}.lab-presets,.lab-Presets{flex-wrap:wrap;gap:6px;display:flex}.lab-presets button,.lab-Presets button{color:var(--lab-ink);background:#fff;border:1px solid #bfd0df;border-radius:4px;padding:4px 10px;font-size:11.5px;font-weight:500;box-shadow:0 1px 2px #16324f0a}.lab-presets button:hover,.lab-Presets button:hover{border-color:var(--lab-ink);background:#edf3f8}.lab-presets button.active,.lab-Presets button.active{background:var(--lab-ink);color:#fff;border-color:var(--lab-ink)}.lab-body-split{flex-direction:column;gap:12px;display:flex}.lab-left-panel{grid-template-columns:1.35fr 1fr;align-items:stretch;gap:12px;min-width:0;display:grid}.lab-left-panel>.lab-lead,.lab-left-panel>.lab-Lead,.lab-left-panel>.lab-task-bar{grid-column:1/-1;margin:0}.lab-right-visual{width:100%;min-width:0}.lab-grid-2,.lab-visual-grid{grid-template-columns:repeat(2,minmax(0,1fr));align-items:stretch;gap:14px;display:grid}.lab-plane{background:#fff;border:1px solid #d5dfe9;border-radius:5px;flex-direction:column;min-width:0;margin:0;padding:10px 14px;display:flex;box-shadow:0 2px 8px #16324f08}.lab-plane figcaption{border-bottom:1px dashed #dce4ec;flex-wrap:wrap;justify-content:space-between;align-items:baseline;gap:2px 8px;margin-bottom:8px;padding-bottom:6px;font-size:12px;display:flex}.lab-plane figcaption strong{color:var(--lab-ink);font-weight:600}.lab-plane figcaption span{color:#5a6e82;font-size:11px}.lab-plane>svg{width:100%;height:auto;max-height:315px;margin:auto;display:block}.lab-controls{background:#fff;border:1px solid #d8e1eb;border-radius:5px;grid-template-columns:repeat(auto-fit,minmax(185px,1fr));align-content:center;gap:8px 14px;padding:10px 14px;display:grid}.lab-controls>.lab-presets,.lab-controls>.lab-Presets{grid-column:1/-1}.lab-slider{min-width:0}.lab-slider label{color:#243b53;justify-content:space-between;align-items:baseline;gap:6px;margin-bottom:3px;font-size:11.5px;font-weight:600;display:flex}.lab-slider output{color:var(--lab-accent);font-variant-numeric:tabular-nums;font:600 12px Consolas,monospace}.lab-slider input[type=range]{width:100%;height:18px;accent-color:var(--lab-ink);cursor:pointer;margin:0;display:block}.lab-slider small{color:#627588;margin-top:2px;font-size:10.5px;line-height:1.35;display:block}.lab-metrics{background:#fff;border:1px solid #d8e1eb;border-radius:5px;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));align-content:center;gap:8px 12px;padding:10px 14px;display:grid}.lab-metric{border-left:3px solid #9fb3c8;min-width:0;padding-left:9px}.lab-metric>span{color:#52667a;margin-bottom:2px;font-size:10.5px;line-height:1.35;display:block}.lab-metric>strong{font-variant-numeric:tabular-nums;color:var(--lab-ink);white-space:normal;word-break:break-word;font:600 13.5px/1.35 Georgia,Microsoft YaHei,serif;display:block}.lab-metric>small{color:#64778a;margin-top:2px;font-size:10.5px;line-height:1.35;display:block}.lab-metric-accent{border-left-color:var(--lab-accent)}.lab-metric-accent>strong{color:var(--lab-accent)}.lab-footnote{display:none}@media (width<=860px){.lab-left-panel,.lab-grid-2,.lab-visual-grid{grid-template-columns:1fr}}