.study-tracks,.study-orientation nav,.study-links{display:flex;gap:12px;flex-wrap:wrap}
.lab-output [hidden]{display:none!important}
.lab-actions .workspace-selected{color:var(--green);background:var(--surface-tint);border-radius:6px;box-shadow:inset 0 -3px var(--green);padding:10px 12px;text-decoration:none;font-weight:700}
.lab-actions a,.lab-actions .lab-learning-link{padding:10px 12px;border-radius:6px}
.study-lab-finish,.study-coverage{border:1px solid var(--line);border-radius:10px;padding:20px;margin:22px 0;background:var(--white)}
.study-lab-finish h2{font-size:calc(21px * var(--reading-scale))}.study-lab-finish p{line-height:1.9}
.study-lab-finish details{margin-top:18px}.study-lab-finish summary,.study-coverage summary{cursor:pointer;font-weight:600;line-height:1.8}
.study-coverage ul{padding-left:22px}.study-coverage li{padding:14px 0;border-bottom:1px solid var(--line)}.study-coverage li p{margin:6px 0}.study-coverage small{color:var(--muted);line-height:1.8}
.extension-sections{display:flex;flex-wrap:wrap;gap:10px;margin:24px 0}.extension-sections a{padding:10px 14px;border:1px solid var(--line);border-radius:6px}
.extension-group{scroll-margin-top:110px}.extension-group>h2{font-size:calc(24px * var(--reading-scale));margin-top:32px}.extension-grid h3{font-size:calc(21px * var(--reading-scale));line-height:1.6;margin:14px 0}
.section-title[hidden],.quiz-card[hidden]{display:none!important}
.study-next,.study-orientation,.study-mission,.study-expansion,.study-lab-task,.extension-tool,.extension-question{border:1px solid var(--line);border-radius:10px;padding:22px;margin:22px 0;background:var(--white);min-width:0}
.study-next{background:var(--surface-tint)}.study-next h2{font-size:calc(24px * var(--reading-scale));margin:8px 0}.study-next h3{font-size:calc(22px * var(--reading-scale))}.study-next p,.study-help,.study-orientation p,.study-mission li,.study-expansion p{line-height:1.9}
.study-orientation h2{font-size:calc(21px * var(--reading-scale))}.study-orientation nav a{padding:8px 12px;border:1px solid var(--line);border-radius:5px;font-size:calc(16px * var(--reading-scale))}
.study-stage{border:1px solid var(--line);border-radius:9px;margin:14px 0;padding:16px;background:var(--white)}
.study-stage summary{font-weight:700;cursor:pointer;line-height:1.8}.study-stage summary small{font-weight:400;color:var(--muted);margin-left:14px}
.study-stage ol{padding-left:24px}.study-stage li{padding:12px 0;border-bottom:1px solid var(--line)}.study-stage li:last-child{border:0}
.study-stage li>span{font-size:calc(14px * var(--reading-scale));margin-left:12px;color:var(--muted)}.study-stage li small{display:block;color:var(--muted);line-height:1.8;margin-top:4px}
.study-scope{background:var(--warn-bg);color:var(--warn-ink);padding:14px;border-radius:6px;line-height:1.8}
.study-links{flex-direction:column;align-items:flex-start}.study-links a{line-height:1.8}
.study-lab-task{margin:12px 0;padding:14px 18px;background:var(--surface-tint);font-size:calc(16px * var(--reading-scale))}
.study-lab-task summary{cursor:pointer;font-weight:600;line-height:1.8}.study-lab-task summary span{display:block;font-size:calc(14px * var(--reading-scale));color:var(--muted);font-weight:400}
.study-lab-extension{display:inline-block;margin-top:12px}.study-lab-task li{margin:10px 0;line-height:1.8}
.extension-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin:24px 0}
.extension-grid article{padding:22px;border:1px solid var(--line);border-radius:10px;background:var(--white);min-width:0}
.extension-grid h2{font-size:calc(22px * var(--reading-scale));line-height:1.6}.extension-grid p,.extension-grid small{line-height:1.8}.extension-grid small{color:var(--muted)}
.extension-article{max-width:1000px}.extension-article>p{line-height:2}.extension-article table{width:100%;border-collapse:collapse}.extension-article th,.extension-article td{border:1px solid var(--line);padding:12px;text-align:left}
.extension-article .katex-display{max-width:100%;overflow:auto}
.extension-form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.extension-form label{display:flex;flex-direction:column;gap:8px;font-size:calc(16px * var(--reading-scale));min-width:0}
.extension-form input{box-sizing:border-box;width:100%;font:inherit;padding:12px;border:1px solid var(--line);border-radius:5px;background:var(--input-bg);color:var(--ink)}
.extension-form small{color:var(--muted)}.extension-form input[aria-invalid=true]{outline:2px solid var(--orange)}
.extension-values{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin-top:18px}
.extension-values>div{padding:12px;background:var(--surface-tint);border-radius:6px}.extension-values span,.extension-values strong{display:block}.extension-values strong{margin-top:8px;color:var(--green);overflow-wrap:anywhere}
.extension-question summary{cursor:pointer;font-weight:600;padding:10px 0}.fsm-hit{background:var(--success-bg);color:var(--success-ink)}
.study-mission,.study-expansion,#study-method,#study-check{scroll-margin-top:110px}
.syllabus-extensions{display:block;padding:16px;margin:12px 0;border:1px solid var(--line);border-radius:7px;font-weight:600}
.practice-filter{display:flex;gap:12px;align-items:center;margin:20px 0;flex-wrap:wrap}.practice-filter select{max-width:100%;font:inherit;background:var(--input-bg);color:var(--ink);border:1px solid var(--line);padding:10px;border-radius:6px}
@media(max-width:700px){.extension-grid,.extension-form{grid-template-columns:1fr}.study-next,.study-orientation,.study-mission,.study-expansion,.extension-tool{padding:16px}.study-tracks .btn{flex:1 1 100%;justify-content:center}.study-stage summary small{display:block;margin-left:0}.extension-article table{font-size:calc(14px * var(--reading-scale))}.extension-article th,.extension-article td{padding:8px}.lab-actions{gap:8px}.lab-actions a,.lab-actions .lab-learning-link{font-size:calc(14px * var(--reading-scale))}.study-lab-task{padding:12px}}