/* Scoped article teaching labs. */
.vp-lab{--vp-lab-ink:#183f3b;--vp-lab-accent:#17635e;--vp-lab-line:#ccdfda;box-sizing:border-box;max-width:100%;margin:2rem 0;border:1px solid var(--vp-lab-line);border-radius:18px;background:#f7fbf9;color:var(--vp-lab-ink);font-family:inherit;line-height:1.65;overflow:hidden}
.vp-lab *{box-sizing:border-box}
.vp-lab [hidden]{display:none!important}
.vp-lab .vp-lab-heading{padding:1.4rem 1.5rem 1rem;background:linear-gradient(120deg,#e5f2ed,#f3f7ec)}
.vp-lab .vp-lab-eyebrow{display:block;margin-bottom:.35rem;color:var(--vp-lab-accent);font-size:.76rem;font-weight:750;letter-spacing:.14em}
.vp-lab h3{margin:0 0 .45rem;font-size:1.35rem;line-height:1.4;color:var(--vp-lab-ink)}
.vp-lab h4{margin:.1rem 0 .85rem;font-size:1rem;color:var(--vp-lab-ink)}
.vp-lab p{margin:.45rem 0 .8rem}
.vp-lab .vp-lab-heading p{margin:0;font-size:.93rem}
.vp-lab .vp-lab-disclosure{padding:.7rem 1.5rem;margin:0;border-top:1px solid #d9e8df;border-bottom:1px solid #d9e8df;color:#485f51;background:#f0f5e9;font-size:.82rem}
.vp-lab .vp-lab-body{display:flex;flex-direction:column;gap:1rem;padding:1.4rem 1.5rem}
.vp-lab .vp-lab-controls{display:flex;flex-wrap:wrap;align-items:center;gap:.8rem 1.25rem}
.vp-lab fieldset{min-width:0;margin:0;padding:0;border:0}
.vp-lab legend{padding:0;margin:0 0 .55rem;font-size:.9rem;font-weight:700}
.vp-lab .vp-lab-choices{display:flex;flex-wrap:wrap;gap:.4rem}
.vp-lab .vp-lab-choices legend{float:none;width:100%}
.vp-lab .vp-lab-button{display:inline-flex;justify-content:center;align-items:center;gap:.4rem;min-height:42px;padding:.5rem .8rem;border:1px solid #b5ccc4;border-radius:9px;background:#fff;color:var(--vp-lab-ink);font:inherit;font-size:.88rem;line-height:1.4;cursor:pointer;transition:background .15s,border-color .15s}
.vp-lab .vp-lab-button:hover{background:#e7f2ed;border-color:#6b9d8d}
.vp-lab .vp-lab-button[aria-pressed=true]{background:var(--vp-lab-accent);border-color:var(--vp-lab-accent);color:#fff}
.vp-lab :is(button,a,input,select,summary):focus-visible{outline:3px solid #bf6c28;outline-offset:3px}
.vp-lab .vp-lab-check{display:flex;align-items:center;gap:.5rem;min-height:42px;font-size:.88rem;cursor:pointer}
.vp-lab input[type=checkbox],.vp-lab input[type=radio]{width:18px;height:18px;flex:0 0 18px;accent-color:var(--vp-lab-accent)}
.vp-lab .vp-lab-plot-panel{min-width:0;padding:.9rem;border:1px solid #d6e4de;border-radius:12px;background:#fff}
.vp-lab .vp-lab-figure{min-width:0}
.vp-lab .vp-lab-svg{display:block;width:100%;height:auto;border-radius:9px;background:#fff;overflow:visible}
.vp-lab .vp-lab-svg-tick{font:13px system-ui,sans-serif;fill:#425e59}
.vp-lab .vp-lab-svg-label{font:14px system-ui,sans-serif;fill:#244b45}
.vp-lab .vp-lab-svg-value{font:700 16px system-ui,sans-serif;fill:#244b45}
.vp-lab .vp-lab-svg-note{font:12px system-ui,sans-serif;fill:#64766e}
.vp-lab .vp-lab-caption{font-size:.87rem;color:#4d655e}
.vp-lab .vp-lab-math{padding:1rem;border:1px solid var(--vp-lab-line);border-radius:12px;background:#fff}
.vp-lab .vp-lab-input-grid,.vp-lab .vp-lab-capacity-inputs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1.1rem}
.vp-lab .vp-lab-field{display:flex;flex-direction:column;gap:.35rem;min-width:0}
.vp-lab .vp-lab-field label{font-weight:650;font-size:.9rem}
.vp-lab .vp-lab-field small{color:#5b7068;line-height:1.5;font-size:.78rem}
.vp-lab .vp-lab-field input[type=number],.vp-lab .vp-lab-field select{width:100%;min-height:44px;padding:.55rem .7rem;border:1px solid #afc8be;border-radius:8px;background:#fff;color:var(--vp-lab-ink);font:inherit;font-size:1rem}
.vp-lab .vp-lab-field input[aria-invalid=true]{border:2px solid #a63b25;background:#fff7f3}
.vp-lab .vp-lab-field input[type=range]{width:100%;min-height:34px;margin:.3rem 0;accent-color:var(--vp-lab-accent)}
.vp-lab .vp-lab-field output{font-size:.86rem;font-weight:700}
.vp-lab .vp-lab-result{padding:.85rem 1rem;border-left:3px solid #31786d;border-radius:0 8px 8px 0;background:#edf6f0;font-size:.9rem;overflow-wrap:anywhere}
.vp-lab .vp-lab-warning{padding:.8rem 1rem;border:1px solid #dfd0aa;border-radius:9px;background:#fffaf0;color:#665128;font-size:.86rem}
.vp-lab .vp-lab-warning p{margin:.45rem 0 0}
.vp-lab .vp-lab-conditions{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.4rem 1rem;margin:.8rem 0 0;font-size:.8rem}
.vp-lab .vp-lab-conditions>div{display:flex;justify-content:space-between;gap:.5rem;border-bottom:1px solid #e9dfc7;padding:.35rem 0}
.vp-lab .vp-lab-conditions dt{font-weight:600}.vp-lab .vp-lab-conditions dd{flex-shrink:0;margin:0;color:#786947}
.vp-lab .vp-lab-error{padding:.7rem .9rem;border:1px solid #d99c89;border-radius:8px;background:#fff3ee;color:#8c2f1c;font-size:.88rem}
.vp-lab .vp-lab-formula{font-size:.89rem;overflow-wrap:anywhere}
.vp-lab .vp-lab-compare{display:grid;grid-template-columns:1fr;gap:.8rem}
.vp-lab .vp-lab-compare .vp-lab-plot-panel{padding:.65rem}
.vp-lab .vp-lab-compare h4{padding:0 .35rem;font-size:.9rem}
.vp-lab .vp-lab-data{border-top:1px solid #dce7e0;padding-top:.6rem}
.vp-lab .vp-lab-data summary{cursor:pointer;min-height:36px;font-size:.86rem;color:var(--vp-lab-accent);font-weight:650}
.vp-lab .vp-lab-table-scroll{max-width:100%;overflow-x:auto;padding:.3rem 0 .4rem}
.vp-lab table{width:100%;border-collapse:collapse;font-size:.8rem;font-variant-numeric:tabular-nums}
.vp-lab caption{padding:.25rem 0 .65rem;text-align:left;color:#5c7067;font-size:.78rem;line-height:1.5}
.vp-lab th,.vp-lab td{padding:.55rem .6rem;border-bottom:1px solid #e1e9e3;text-align:left;white-space:nowrap}
.vp-lab thead th{background:#eef5ef;font-weight:700}
.vp-lab tbody th{font-weight:600}
.vp-lab .vp-lab-sample{display:flex;flex-direction:column;gap:.9rem;padding:1rem;border:1px solid #c8ddd2;border-radius:10px;background:#fff}
.vp-lab .vp-lab-sample legend{float:left;width:100%;margin:0;color:var(--vp-lab-accent)}
.vp-lab .vp-lab-empty{padding:2rem 1rem;border:1px dashed #aec9bd;border-radius:10px;text-align:center;color:#5e756a}
.vp-lab .vp-lab-quiz{padding:1rem;border:1px solid #c7d9cf;border-radius:12px;background:#fff}
.vp-lab .vp-lab-quiz legend{font-weight:550}
.vp-lab .vp-lab-quiz-option{display:flex;align-items:flex-start;gap:.6rem;padding:.6rem .65rem;margin:.35rem 0;border:1px solid #d9e5dd;border-radius:8px;font-size:.88rem;cursor:pointer}
.vp-lab .vp-lab-quiz-option input{margin-top:.2rem}
.vp-lab .vp-lab-quiz-option:has(input:checked){border-color:#5c9b83;background:#f0f8f1}
.vp-lab .vp-lab-quiz .vp-lab-result{margin:.8rem 0 0}
.vp-lab .vp-lab-quiz .vp-lab-result[data-correct=false]{border-color:#af7e32;background:#fff8e9}
.vp-lab .vp-lab-footer{display:flex;flex-direction:column;align-items:flex-start;gap:.5rem;padding:1rem 1.5rem 1.2rem;border-top:1px solid #d2e3d8;background:#edf5ef}
.vp-lab .vp-lab-workbench{display:inline-flex;align-items:center;min-height:44px;padding:.5rem .9rem;border-radius:8px;background:var(--vp-lab-accent);color:#fff;font-size:.9rem;font-weight:700;text-decoration:none}
.vp-lab .vp-lab-workbench:hover{background:#104d48;text-decoration:underline}
.vp-lab .vp-lab-footer small{color:#536e60;font-size:.78rem;line-height:1.55}
@media(max-width:720px){.vp-lab .vp-lab-compare{grid-template-columns:1fr}.vp-lab .vp-lab-body{padding:1rem}.vp-lab .vp-lab-heading{padding:1.1rem 1rem .9rem}.vp-lab .vp-lab-disclosure{padding:.65rem 1rem}.vp-lab .vp-lab-footer{padding:1rem}.vp-lab h3{font-size:1.2rem}}
@media(max-width:480px){.vp-lab{border-radius:12px}.vp-lab .vp-lab-input-grid,.vp-lab .vp-lab-capacity-inputs,.vp-lab .vp-lab-conditions{grid-template-columns:1fr}.vp-lab .vp-lab-choices{width:100%}.vp-lab .vp-lab-choices .vp-lab-button{flex:1 1 120px}.vp-lab .vp-lab-math,.vp-lab .vp-lab-quiz{padding:.8rem}.vp-lab .vp-lab-plot-panel{padding:.5rem}.vp-lab .vp-lab-svg-label{font-size:22px}.vp-lab .vp-lab-svg-tick{font-size:22px}.vp-lab .vp-lab-svg-value{font-size:25px}.vp-lab .vp-lab-svg-note{font-size:17px}}
@media(prefers-reduced-motion:reduce){.vp-lab .vp-lab-button{transition:none}}
@media print{.vp-lab{break-inside:avoid;box-shadow:none}.vp-lab .vp-lab-controls,.vp-lab .vp-lab-button{display:none}.vp-lab .vp-lab-compare{grid-template-columns:1fr}.vp-lab .vp-lab-workbench{color:#173e38;background:none;border:1px solid #6d8a7b}}