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SC,serif;font-size:28px;color:var(--green);line-height:1.45}.subject-library-intro p{line-height:1.8;color:var(--muted);max-width:560px}.subject-library-intro .button{margin:0 14px 0 0;min-height:38px;padding:9px 14px;font-size:14px}.subject-library-counts{display:flex;align-items:center;justify-content:space-around;gap:14px}.subject-library-counts div{display:flex;flex-direction:column-reverse;gap:4px;min-width:0}.subject-library-counts dd{font-size:20px;margin:0;color:var(--subject-ink)}.subject-library-counts dt{font-size:13px;color:var(--muted)}.subject-library .section-heading{margin-top:24px;align-items:end;gap:20px}.subject-library .section-heading p{color:var(--muted);font-size:14px}.subject-library .page-heading h1{font-family:Georgia,Songti SC,serif;color:var(--green)}.subject-library .section-heading h2{font-size:22px}.subject-topic-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border-top:1px solid var(--line)}.subject-topic-list a{display:flex;gap:16px;padding:12px 14px;min-height:44px;font-size:14px;border-bottom:1px solid var(--line);align-items:center}.subject-topic-list small{margin-left:auto;white-space:nowrap;color:var(--muted)}.subject-topic-list a>span{min-width:0;overflow-wrap:anywhere}.subject-topic-list a:hover{background:var(--subject-tint)}.subject-paper-list>div{display:grid;grid-template-columns:minmax(0,1fr) auto 120px;align-items:center;gap:28px;padding:18px 4px;border-top:1px solid var(--line)}.subject-paper-list small{display:block;margin-top:8px;color:var(--muted)}.subject-paper-list>div>div{min-width:0;overflow-wrap:anywhere}.subject-paper-list>div>span{font-size:14px;color:var(--muted)}.subject-pending{color:var(--subject-ink)!important}.subject-practice-heading{margin:16px 0}.subject-practice-heading h1{font-size:26px;margin:6px 0;line-height:1.4;letter-spacing:-.025em;color:var(--green)}.subject-practice-heading p{color:var(--muted);line-height:1.6;font-size:13px}.subject-question-filters{display:flex;align-items:end;flex-wrap:wrap;gap:12px;padding:14px;border:1px solid var(--line);border-radius:6px;background:var(--white);margin-bottom:16px}.subject-question-filters label{display:flex;flex-direction:column;gap:5px;font-size:13px;min-width:0;flex:1 1 170px}.subject-question-filters select{min-width:0;width:100%;padding:8px 10px;min-height:38px;background:var(--paper);border:1px solid var(--line);border-radius:4px}.subject-question-filters>span{font-size:13px;color:var(--muted);padding-bottom:13px}.subject-question-list{display:grid;grid-template-columns:minmax(0,1fr);gap:18px;scroll-margin-top:24px}.subject-question-list[aria-busy=true]{opacity:.6;pointer-events:none}.subject-question-card{padding:20px 24px;border:1px solid var(--line);background:var(--white);border-radius:6px;min-width:0}.subject-question-meta{display:flex;justify-content:space-between;gap:24px;font-size:13px;color:var(--muted);margin-bottom:14px}.subject-question-meta>span:last-child{color:var(--subject-ink);white-space:nowrap}.subject-question-meta>span:first-child{min-width:0;overflow-wrap:anywhere}.subject-question-part{margin-top:22px;min-width:0}.subject-part-label{font-size:14px;display:block;margin-bottom:12px}.subject-question-part fieldset{border:0;padding:0;margin:18px 0;display:grid;gap:10px;min-width:0}.subject-question-part fieldset label{display:flex;gap:14px;align-items:baseline;padding:12px 18px;border:1px solid var(--line);border-radius:4px;cursor:pointer}.subject-question-part fieldset label.selected{background:var(--subject-tint);border-color:var(--subject-ink)}.subject-question-part fieldset input{accent-color:var(--subject-ink);flex-shrink:0;width:16px;height:16px}.subject-question-part fieldset b{flex-shrink:0}.subject-question-part fieldset .qs-content{flex:1}.subject-written-answer{display:grid;gap:10px;color:var(--muted);font-size:14px;margin-top:20px}.subject-written-answer textarea{min-height:110px;width:100%;padding:15px;border:1px solid var(--line);border-radius:4px;resize:vertical;background:var(--paper);color:var(--ink)}.subject-solution{background:var(--subject-tint);padding:22px;margin-top:22px;border-radius:4px}.subject-solution>p{display:flex;align-items:center;gap:10px;color:var(--subject-ink);margin-bottom:14px}.subject-reference-answer{display:flex;align-items:baseline;gap:14px;margin-bottom:12px}.subject-reference-answer>strong{flex-shrink:0}.subject-reference-answer>.qs-content{flex:1}.subject-question-footer{display:flex;justify-content:space-between;gap:20px;font-size:13px;color:var(--muted);padding:22px 0}.subject-question-footer>span{min-width:0;overflow-wrap:anywhere}.subject-question-footer>a{flex-shrink:0}.subject-record-status{display:flex;gap:10px;align-items:center;margin-top:14px;color:var(--subject-ink);font-size:13px}.subject-record-status a{text-decoration:underline;text-underline-offset:3px}.subject-record-list{display:grid;gap:12px}.subject-record-card{display:grid;grid-template-columns:minmax(0,1fr) auto auto;align-items:center;gap:22px;padding:18px 0;border-top:1px solid var(--line)}.subject-record-card>div:first-child{display:grid;gap:5px;min-width:0}.subject-record-card small{color:var(--muted);font-size:12px}.subject-record-results{display:flex;flex-wrap:wrap;gap:7px;justify-content:flex-end;color:var(--subject-ink);font-size:12px}.subject-record-results span[data-result=wrong]{color:var(--clay-ink)}.subject-record-results span[data-result=self-review]{color:var(--muted)}.subject-pagination{display:flex;justify-content:space-between;align-items:center;margin:30px 0}:is(.subject-library,.curriculum-live-source) .qs-content{line-height:1.9;white-space:pre-wrap;overflow-wrap:anywhere;min-width:0;max-width:100%;font-family:Georgia,Songti SC,serif;font-size:17px}:is(.subject-library,.curriculum-live-source) .qs-content .katex{font-size:1.04em;white-space:normal}:is(.subject-library,.curriculum-live-source) .qs-display{display:block;max-width:100%;overflow-x:auto}:is(.subject-library,.curriculum-live-source) .qs-inline{display:inline-block;max-width:100%;overflow-x:auto;vertical-align:middle;white-space:nowrap}:is(.subject-library,.curriculum-live-source) .qs-diagram{max-width:min(100%,520px);height:auto;margin:16px auto;display:block}:is(.subject-library,.curriculum-live-source) .katex-display{overflow-x:auto;overflow-y:hidden}.subject-library-actions{display:flex;flex-wrap:wrap;gap:10px}.subject-set-toolbar{display:flex;align-items:end;justify-content:space-between;gap:24px;margin:20px 0;padding:18px 0;border-bottom:1px solid var(--line)}.subject-set-toolbar h1{margin:4px 0 8px;color:var(--green);font-family:Georgia,Songti SC,serif;font-size:28px;line-height:1.35}.subject-set-toolbar p:not(.eyebrow){max-width:680px;color:var(--muted);font-size:13px;line-height:1.7}.subject-set-actions{display:flex;align-items:center;gap:14px;flex-shrink:0}.subject-set-actions .button{display:inline-flex;align-items:center;gap:8px}.subject-set-actions svg{width:15px;height:15px}.subject-set-index{display:flex;flex-wrap:wrap;gap:7px;margin:0 0 18px}.subject-set-index a{display:grid;place-items:center;width:30px;height:30px;border:1px solid var(--line);border-radius:50%;color:var(--muted);font-size:12px}.subject-set-index a:hover{border-color:var(--subject-ink);color:var(--subject-ink);background:var(--subject-tint)}.subject-set-list>div{scroll-margin-top:22px}.subject-set-number{margin:12px 0 -7px;color:var(--subject-ink);font-size:13px;font-weight:600}@media (max-width:760px){.subject-set-toolbar{align-items:flex-start;flex-direction:column;gap:14px}.subject-set-toolbar h1{font-size:24px}.subject-set-actions{flex-wrap:wrap}.subject-library-intro{grid-template-columns:1fr;padding:14px;gap:14px}.subject-library-counts{justify-content:flex-start;flex-wrap:wrap}.subject-library-counts dd{font-size:18px}.subject-library-intro h2{font-size:25px}.subject-topic-list{grid-template-columns:1fr}.subject-paper-list>div{grid-template-columns:1fr auto;gap:16px}.subject-paper-list>div>div{grid-column:1/-1}.subject-question-card{padding:18px 16px}.subject-question-filters{padding:12px}.subject-question-filters label,.subject-question-filters select{width:100%;max-width:100%}.subject-question-filters>span{width:100%;padding-bottom:0}.subject-question-meta{flex-direction:column;gap:8px;font-size:12px;margin-bottom:18px}.subject-practice-heading h1{font-size:24px}.subject-pagination{gap:10px;font-size:12px;flex-wrap:wrap}.subject-pagination .button{padding:12px;font-size:12px;gap:8px}.subject-question-part fieldset label{padding:11px 12px;gap:10px}:is(.subject-library,.curriculum-live-source) .qs-content{font-size:16px}.subject-solution{padding:16px}.subject-question-footer{gap:12px;font-size:12px}.subject-record-card{grid-template-columns:1fr;gap:10px}.subject-record-results{justify-content:flex-start}}