.mode-control{display:block;margin:0 8px 10px;font-size:10px;color:var(--muted)}.mode-control select{display:block;width:100%;font-size:10px;margin-top:6px;padding:8px}.mode-note{font-size:10px;line-height:1.6;margin:0 8px 18px;color:var(--muted)}.prerequisite-links{margin-top:10px}.prerequisite-links button{font-size:10px;padding:6px 9px;color:var(--blue)}.prerequisite-links span{font-size:10px;color:var(--muted)}.learning-help{margin-top:24px;padding:22px}.learning-help h2{font-size:17px;margin:0 0 14px}.learning-help label{font-size:12px;display:flex;align-items:center;gap:12px}.learning-help input{padding:10px;border:1px solid var(--line);border-radius:7px;background:var(--bg);color:var(--ink);min-width:0}.learning-help dl{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;max-height:330px;overflow:auto;margin:20px 0 0}.learning-help dt{font-weight:650;font-size:12px;color:var(--ink)}.learning-help dd{font-size:12px;line-height:1.7;color:var(--muted);margin:5px 0 0}.learning-help[hidden]{display:none}.phase-buttons{grid-template-columns:repeat(auto-fit,minmax(70px,1fr))}[data-theme=dark] .prerequisite-links button{color:#98e4df}@media(max-width:800px){.learning-help dl{grid-template-columns:1fr 1fr}}@media(max-width:650px){.learning-help dl{grid-template-columns:1fr}.mode-control{margin-top:14px}.learning-help label{align-items:flex-start;flex-direction:column}.learning-help input{width:100%}}

/* Collapsible navigation and glossary */
#course-toggle{display:block;font-size:11px;white-space:nowrap}
#course-sidebar[hidden]{display:none!important}
body.nav-collapsed .shell{grid-template-columns:minmax(0,1fr)}
.glossary{padding:0}
.glossary>summary{cursor:pointer;padding:20px 22px;font-size:17px;font-weight:650;color:var(--ink)}
.glossary>summary span{font-size:11px;font-weight:400;color:var(--muted);margin-left:12px}
.glossary>summary:focus-visible{outline:3px solid var(--blue);outline-offset:-3px;border-radius:10px}
.glossary[open]>summary{border-bottom:1px solid var(--line)}
.glossary-content{padding:22px}
@media(max-width:650px){#course-toggle{font-size:10px;padding:7px}#course-sidebar:not([hidden]){display:block}.glossary>summary span{display:block;margin:6px 0 0 18px}.glossary-content{padding:18px}}

.prerequisite-link{display:inline-block;margin-top:8px;padding:8px 11px;border:1px solid var(--line);border-radius:7px;color:var(--blue);text-decoration:none;background:#fff}.prerequisite-link:hover{border-color:var(--blue)}.prerequisite-link[aria-disabled="true"]{pointer-events:none;color:var(--muted);opacity:.55}:root[data-theme=dark] .prerequisite-link{background:#1a313e;border-color:#35505e;color:#98e4df}:root[data-theme=dark] .prerequisite-link:hover{background:#203d4b;border-color:#63bcb6}