/* Shared laboratory navigation and its category index, not the mathematical engines. */
.math-observatory-page .math-lab-skip {clip-path:inset(50%);color:#fff}
.math-observatory-page .math-lab-skip:focus {clip-path:none;color:#fff}
.mlab-navigation {max-width:1420px;margin:auto;padding:12px 28px 0}
.mlab-breadcrumb ol {display:flex;flex-wrap:wrap;gap:5px 12px;list-style:none;margin:0 0 12px;padding:0;color:var(--muted);font-size:12px}
.mlab-breadcrumb li+li::before {content:"/";margin-right:12px;color:#657a82}
.mlab-breadcrumb [aria-current] {color:var(--ink)}
.mlab-categories {display:flex;flex-wrap:wrap;gap:8px;align-items:center;padding:12px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.mlab-categories a {display:inline-flex;align-items:center;min-height:44px;padding:9px 14px;border:1px solid transparent;border-radius:8px;color:var(--ink);font-size:13px;font-weight:650;text-decoration:none}
.mlab-categories a:hover {background:#edf5f1;border-color:#b3c6c7}
.mlab-categories a[aria-current=page] {background:#e4efea;border-color:#9ebfba;color:#005d57}
.mlab-categories .mlab-categories__home {margin-right:4px}
.mlab-categories .mlab-categories__notebook {margin-left:auto;border-color:#b3c6c7;background:white}
.mlab-content {max-width:1260px;margin:auto;padding:0 28px 48px}
.mlab-hero {display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:48px;align-items:center;padding:40px 0 32px}
.mlab-hero h1 {max-width:720px;margin:8px 0 18px;font-size:clamp(30px,4vw,52px);letter-spacing:-.04em;line-height:1.1}
.mlab-lead {max-width:680px;font-size:17px;color:var(--muted);margin:0 0 22px}
.mlab-overview {padding:24px;border-radius:16px;border:1px solid #a5c1b8;background:#edf3ec}
.mlab-overview p {margin:0 0 16px;font-size:17px;font-weight:700}
.mlab-overview dl {display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:0 0 16px}
.mlab-overview dl>div {display:flex;flex-direction:column-reverse}
.mlab-overview dt {font-size:12px;color:var(--muted)}
.mlab-overview dd {margin:0;font-size:30px;line-height:1.3;font-weight:750;letter-spacing:-.03em}
.mlab-overview>span {font-size:13px}
.mlab-section {scroll-margin-top:16px;margin:0 0 34px}
.mlab-section-heading {display:flex;justify-content:space-between;align-items:center;gap:20px;margin:0 0 18px}
.mlab-section-heading h2 {margin:0;font-size:25px;line-height:1.2;letter-spacing:-.025em}
.mlab-section-heading>p {margin:0;font-size:13px;color:var(--muted)}
.mlab-category-grid,.mlab-notebook-grid {display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.mlab-category {border:1px solid var(--line);border-radius:16px;padding:24px;background:white;min-width:0}
.mlab-category-heading {display:flex;justify-content:space-between;align-items:center;margin:0 0 10px}
.mlab-category-number {font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums}
.mlab-category-symbol {width:60px;height:52px;border-radius:12px;display:grid;place-items:center;background:#edf5f1;color:var(--teal);font:italic 30px/1 Georgia,serif}
.mlab-category h3 {font-size:25px;line-height:1.2;letter-spacing:-.025em;margin:0 0 12px}
.mlab-category>p {min-height:52px;max-width:450px;color:var(--muted);font-size:15px;margin:0 0 18px}
.mlab-badges {display:flex;flex-wrap:wrap;list-style:none;gap:8px;margin:0 0 20px;padding:0;font-size:12px;color:#425b63}
.mlab-badges li {padding:4px 9px;border:1px solid #d2e0da;border-radius:6px;background:#f7faf7}
.mlab-activities {margin-top:18px;font-size:13px}
.mlab-activities summary {cursor:pointer;min-height:44px;align-content:center;color:var(--teal);padding:8px 0}
.mlab-activities ul {padding-left:20px;margin:8px 0}
.mlab-activities li {margin:8px 0}
.mlab-course-links {margin-top:12px;border-top:1px solid var(--line);padding-top:16px;display:flex;flex-wrap:wrap;gap:6px 14px;font-size:13px}
.mlab-course-links>span {width:100%;color:var(--muted);margin-bottom:3px}
.mlab-course-links a {display:inline-flex;align-items:center;min-height:44px}
.mlab-notebook {border:1px solid var(--line);border-radius:16px;background:#eef2ed;padding:26px}
.mlab-notebook>p {max-width:820px;color:var(--muted);font-size:14px}
.mlab-local-label {font-size:12px;color:var(--muted);padding:5px 10px;border-radius:6px;background:#fff}
.mlab-notebook-group {border:1px solid var(--line);background:white;padding:20px;border-radius:12px;min-width:0}
.mlab-notebook-group h3 {margin:0 0 8px;font-size:18px}
.mlab-notebook-group p {font-size:13px;color:var(--muted);margin:8px 0 14px}
.mlab-versions {margin-top:14px;font-size:13px}
.mlab-versions summary {min-height:44px;align-content:center;cursor:pointer;color:var(--teal)}
.mlab-versions ul {list-style:none;padding:0;margin:0}
.mlab-versions li {border-top:1px solid var(--line);padding:12px 0;display:flex;flex-wrap:wrap;gap:8px;justify-content:space-between;align-items:center}
.mlab-versions time {display:block;font-size:12px;color:var(--muted)}
.mlab-versions button {font-size:13px}
.mlab-method {display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:32px;margin:40px 0 10px;padding:24px 0;border-top:1px solid var(--line)}
.mlab-method h2 {max-width:420px;font-size:26px;letter-spacing:-.025em;line-height:1.25;margin:0}
.mlab-method ol {margin:0;padding-left:22px;font-size:14px;color:var(--muted)}
.mlab-method li {padding-left:6px;margin:0 0 14px}
.mlab-method strong {color:var(--ink)}
@media(max-width:900px){.mlab-hero{gap:24px;grid-template-columns:minmax(0,1fr) 260px}.mlab-category{padding:20px}.mlab-category h3{font-size:23px}.mlab-category .obs-button{font-size:14px}}
@media(max-width:650px){.mlab-navigation{padding:12px 14px 0}.mlab-content{padding:0 14px 32px}.mlab-breadcrumb ol{font-size:11px;gap:4px 8px}.mlab-breadcrumb li+li::before{margin-right:8px}.mlab-categories{gap:4px}.mlab-categories a{padding:8px 10px;font-size:12px}.mlab-categories .mlab-categories__notebook{margin-left:0}.mlab-hero{grid-template-columns:1fr;gap:18px;padding:26px 0}.mlab-hero h1{font-size:34px}.mlab-lead{font-size:15px}.mlab-overview{padding:18px}.mlab-overview dl{margin-bottom:10px}.mlab-category-grid,.mlab-notebook-grid{grid-template-columns:1fr;gap:14px}.mlab-section-heading{display:block}.mlab-section-heading>p{margin-top:10px}.mlab-section-heading h2{font-size:23px}.mlab-category>p{min-height:0}.mlab-category .obs-button{width:100%;font-size:13px;padding:10px}.mlab-notebook{padding:18px 14px}.mlab-local-label{display:inline-block;margin-top:12px}.mlab-notebook-group{padding:16px}.mlab-method{grid-template-columns:1fr;gap:20px}}
@media(prefers-reduced-motion:reduce){.math-laboratory-page{scroll-behavior:auto}}
@media(forced-colors:active){.mlab-categories a[aria-current=page]{border:2px solid Highlight}.mlab-category,.mlab-notebook-group,.mlab-overview{border:1px solid CanvasText}}