:root{--ink:#17243a;--muted:#647083;--cream:#f5f6f8;--paper:#fff;--green:#244b73;--lime:#e9eff5;--line:#d8dee7}*{box-sizing:border-box}html{background:var(--cream)}body{color:var(--ink);background:var(--cream);margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}a:focus-visible,button:focus-visible,summary:focus-visible{outline-offset:3px;outline:3px solid #7da1c4}.skip-link{z-index:30;color:#fff;background:var(--green);padding:10px 14px;position:fixed;top:12px;left:12px;transform:translateY(-160%)}.skip-link:focus{transform:translateY(0)}.public-header{border-bottom:1px solid var(--line);z-index:20;background:#fffffff5;align-items:center;gap:28px;min-height:68px;padding:12px max(4vw,24px);display:flex;position:sticky;top:0}.public-header .brand{color:var(--green);font:600 19px Iowan Old Style,Palatino Linotype,Georgia,serif;text-decoration:none}.primary-navigation{gap:20px;margin-left:auto;display:flex}.primary-navigation a,.course-switch a{color:var(--green);font-weight:700;text-decoration:none}.course-switch{border:1px solid var(--green);border-radius:6px;padding:3px;display:flex}.course-option{border-radius:3px;padding:7px 12px}.course-option.active{background:var(--green);color:#fff}.route-loading{width:min(920px,92vw);color:var(--muted);margin:0 auto;padding:54px 0}.page{width:min(1180px,92vw);margin:0 auto;padding:54px 0 90px}.eyebrow{color:var(--muted);letter-spacing:.15em;text-transform:uppercase;font-size:11px;font-weight:700}.home-page>h1,.topic-page h1{margin:.2em 0;font:500 clamp(36px,5vw,54px) Iowan Old Style,Palatino Linotype,Georgia,serif}.lead{max-width:760px;font-size:18px;line-height:1.7}.continue-learning-panel{border-left:4px solid var(--green);background:var(--paper);max-width:760px;margin:30px 0 44px;padding:22px 24px}.continue-learning-panel h2{margin:4px 0 8px}.continue-learning-panel p:not(.eyebrow){color:var(--muted)}.entry-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;display:grid}.entry-card{background:var(--paper);border:1px solid var(--line);border-radius:8px;min-height:180px;padding:24px}.entry-card a{color:var(--green);font-weight:700}.entry-card-link{align-items:center;min-height:44px;display:inline-flex}.mock-paper-card-actions{gap:8px;display:grid}.mock-paper-card-actions .entry-card-link{border:1px solid #aab9c9;border-radius:4px;justify-content:center;padding:0 12px;text-decoration:none}.mock-paper-card-actions .entry-card-link:hover{background:#eef3f8}.entry-card p:not(.eyebrow){color:var(--muted);line-height:1.6}.past-papers-page{width:min(1120px,92vw)}.past-papers-intro{max-width:800px}.past-papers-intro h1{margin:.2em 0;font:500 clamp(38px,5vw,58px) Iowan Old Style,Palatino Linotype,Georgia,serif}.past-paper-import-status{border-left:3px solid var(--green);color:var(--muted);background:#eef3f8;margin-top:24px;padding:14px 16px;line-height:1.55}.past-paper-view-switch{border:1px solid var(--line);background:#e9edf2;border-radius:6px;gap:4px;margin:38px 0 28px;padding:4px;display:inline-flex}.past-paper-view-switch button{min-width:130px;color:var(--muted);cursor:pointer;font:inherit;background:0 0;border:0;border-radius:4px;padding:10px 16px;font-weight:700}.past-paper-view-switch button[aria-pressed=true]{color:var(--green);background:var(--paper);box-shadow:0 1px 4px #17243a1f}.past-paper-directory{width:min(1180px,92vw)}.past-paper-directory-header{max-width:720px}.past-paper-directory-header>p,.past-paper-directory-results header p{color:var(--muted);margin:0;font-size:.82rem;font-weight:700}.past-paper-directory-header h1{margin:6px 0 10px;font:600 clamp(38px,5vw,54px) Iowan Old Style,Palatino Linotype,Georgia,serif}.past-paper-directory-header>span,.past-paper-directory-guidance{color:var(--muted);font-size:1.08rem;line-height:1.6;display:block}.past-paper-directory-tabs{border:1px solid var(--line);background:var(--paper);border-radius:8px;gap:4px;margin:32px 0 28px;padding:4px;display:inline-flex}.past-paper-directory-tabs a{min-width:130px;color:var(--green);text-align:center;border-radius:5px;padding:10px 16px;font-weight:700;text-decoration:none}.past-paper-directory-tabs a[aria-current=page]{color:#fff;background:var(--green)}.past-paper-directory-layout{grid-template-columns:244px minmax(0,1fr);align-items:start;gap:24px;display:grid}.past-paper-year-navigation h2{color:var(--muted);letter-spacing:.04em;margin:0 0 14px;font-size:.86rem}.past-paper-year-navigation>div{grid-template-columns:repeat(3,minmax(0,1fr));gap:6px;display:grid}.past-paper-year-navigation a{color:var(--green);font-variant-numeric:tabular-nums;text-align:center;border-radius:4px;padding:8px 4px;font-weight:700;text-decoration:none}.past-paper-year-navigation a:hover{background:var(--lime)}.past-paper-year-navigation a[aria-current=page]{color:#fff;background:var(--green)}.past-paper-directory-results{border:1px solid var(--line);background:var(--paper);border-radius:8px;padding:28px}.past-paper-directory-results header{border-bottom:1px solid var(--line);justify-content:space-between;align-items:end;gap:16px;margin-bottom:24px;padding-bottom:18px;display:flex}.past-paper-directory-results h2{margin:2px 0 0;font:600 32px Iowan Old Style,Palatino Linotype,Georgia,serif}.past-paper-directory-results header>span{color:var(--muted);font-size:.9rem;font-weight:700}.past-paper-directory-paper-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;display:grid}.past-paper-directory-paper{border:1px solid var(--line);min-height:116px;color:var(--ink);border-radius:8px;flex-direction:column;justify-content:space-between;padding:18px;text-decoration:none;transition:border-color .16s,background .16s,transform .16s;display:flex}.past-paper-directory-paper:hover{background:#f9fbfd;border-color:#8ba8c4;transform:translateY(-1px)}.past-paper-directory-paper:active{transform:translateY(0)}.past-paper-directory-paper>span{font-size:1.08rem;font-weight:700;line-height:1.45}.past-paper-directory-paper small{color:var(--green);margin-top:16px;font-size:.78rem;font-weight:700}.past-paper-directory-guidance{margin:0 0 24px}.past-paper-syllabus-directory{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;display:grid}.past-paper-syllabus-domain{border:1px solid var(--line);background:var(--paper);border-radius:8px;padding:24px}.past-paper-syllabus-domain h2{margin:0 0 16px;font:600 26px Iowan Old Style,Palatino Linotype,Georgia,serif}.past-paper-syllabus-domain>div{gap:2px;display:grid}.past-paper-syllabus-point{border-bottom:1px solid var(--line);color:var(--green);padding:10px 0;font-weight:700;line-height:1.4;text-decoration:none}.past-paper-syllabus-point:last-child{border-bottom:0}.past-paper-syllabus-point:hover{color:var(--ink)}.past-paper-directory .past-paper-year-navigation{background:var(--paper);padding:20px}.past-paper-directory .past-paper-year-navigation>div{grid-template-columns:repeat(3,minmax(0,1fr));gap:6px}.past-paper-year-list,.past-paper-syllabus-list{gap:28px;display:grid}.past-paper-year-browser{grid-template-columns:120px minmax(0,1fr);align-items:start;gap:18px;display:grid}.past-paper-year-navigation{border:1px solid var(--line);background:var(--paper);border-radius:8px;padding:18px 14px;position:sticky;top:92px}.past-paper-year-navigation>p{margin:0 0 12px}.past-paper-year-navigation>div{gap:3px;display:grid}.past-paper-year-navigation button{color:var(--muted);cursor:pointer;font:inherit;font-variant-numeric:tabular-nums;text-align:left;background:0 0;border:0;border-radius:4px;padding:8px 10px;font-weight:700}.past-paper-year-navigation button:hover{background:#f1f4f7}.past-paper-year-navigation button[aria-pressed=true]{color:#fff;background:var(--green)}.past-paper-year,.past-paper-domain{border:1px solid var(--line);background:var(--paper);border-radius:8px;padding:28px}.past-paper-year-header{border-bottom:1px solid var(--line);justify-content:space-between;align-items:end;gap:20px;margin-bottom:26px;padding-bottom:20px;display:flex}.past-paper-year-header h2,.past-paper-domain h2{margin:4px 0 0;font:600 32px Iowan Old Style,Palatino Linotype,Georgia,serif}.past-paper-year-header>p{color:var(--muted);margin:0}.past-paper-year>section+section{margin-top:30px}.past-paper-year>section>h3{color:var(--muted);letter-spacing:.08em;text-transform:uppercase;margin:0 0 14px;font-size:.82rem}.past-paper-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;display:grid}.past-paper-card{border:1px solid var(--line);background:#fbfcfd;border-radius:6px;flex-direction:column;min-height:206px;padding:20px;display:flex}.past-paper-card header{justify-content:space-between;align-items:start;gap:12px;display:flex}.past-paper-card h3{margin:3px 0 0;font-size:1.25rem}.past-paper-card h3 a{color:var(--ink);gap:10px;text-decoration:none;display:grid}.past-paper-card h3 a span{color:var(--muted);font-size:.86rem;font-weight:600}.past-paper-card header>span,.past-paper-card>p{color:var(--muted);font-size:.84rem;line-height:1.5}.past-paper-card header>span{white-space:nowrap}.past-paper-actions{gap:8px;margin-top:auto;display:grid}.past-paper-actions a{color:var(--green);text-align:center;border:1px solid #aab9c9;border-radius:4px;padding:9px 11px;font-size:.88rem;font-weight:700;text-decoration:none}.past-paper-actions>span{border:1px solid var(--line);color:var(--muted);text-align:center;background:#f1f3f5;border-radius:4px;padding:9px 11px;font-size:.82rem;font-weight:700}.past-paper-actions a:first-child{color:#fff;border-color:var(--green);background:var(--green)}.past-paper-actions a:hover{box-shadow:inset 0 0 0 1px}.past-paper-classification-note{background:#eef3f8;border:1px solid #b8c6d4;border-radius:6px;padding:20px 22px}.past-paper-classification-note p{max-width:760px;color:var(--muted);margin:8px 0 0;line-height:1.6}.past-paper-topic-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:20px;display:grid}.past-paper-topic-card{background:#f8fafc;border-top:2px solid #b8c6d4;padding:16px 18px}.past-paper-topic-card h3{margin:0;font-size:1rem;line-height:1.4}.past-paper-topic-card p{color:var(--muted);margin:8px 0 0;font-size:.84rem;line-height:1.45}.past-paper-topic-card a{color:var(--green);text-underline-offset:3px;font-weight:700;text-decoration-thickness:1px}.past-paper-topic-card a>span{color:var(--muted);margin-top:8px;font-size:.84rem;font-weight:600;display:block}.past-paper-topic-detail{border:1px solid var(--line);background:var(--paper);border-radius:8px;padding:clamp(24px,4vw,42px)}.past-paper-topic-detail>h2{margin:.3rem 0;font:600 clamp(30px,4vw,42px) Iowan Old Style,Palatino Linotype,Georgia,serif}.past-paper-topic-back{color:var(--green);margin-bottom:2rem;font-weight:700;display:inline-block}.past-paper-topic-summary{color:var(--muted);line-height:1.6}.past-paper-question-list{gap:32px;margin-top:28px;display:grid}.past-paper-question{border:1px solid var(--line);background:#fff;border-radius:8px;margin:0;overflow:hidden}.past-paper-question:has(.question-paper-card-source-faithful){border:0;border-radius:0;overflow:visible}.past-paper-question-catalog-entry{border-width:0 0 1px;border-radius:0}.past-paper-question-catalog-entry .past-paper-question-source{background:0 0;padding:14px 0}.past-paper-question-source{border-bottom:1px solid var(--line);color:var(--muted);letter-spacing:.02em;margin:0;padding:12px 18px;font-size:.86rem;font-weight:700}.past-paper-question-header{border-bottom:1px solid var(--line);justify-content:space-between;align-items:end;gap:24px;padding:18px 22px;display:flex}.past-paper-question-header .eyebrow{margin:0}.past-paper-question-header h3{margin:.35rem 0}.past-paper-question-header p:last-child{color:var(--muted);margin:0}.past-paper-question-header>a{color:var(--green);text-underline-offset:3px;border:1px solid #aab9c9;border-radius:4px;flex:none;padding:9px 12px;font-size:.86rem;font-weight:700;text-decoration:none}.past-paper-question-image{border-bottom:1px solid var(--line);background:#fff;width:100%;height:auto;display:block}.past-paper-question-image:last-child{border-bottom:0}.past-paper-question-unavailable{color:var(--muted);text-align:center;margin:0;padding:48px 22px}.knowledge-point-directory-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;display:grid}.directory-coverage-note{max-width:720px;color:var(--muted);line-height:1.65}.syllabus-unit-list{gap:14px;margin-top:28px;display:grid}.syllabus-unit{border:1px solid var(--line);background:var(--paper);border-radius:8px;overflow:hidden}.syllabus-unit summary{cursor:pointer;justify-content:space-between;align-items:center;gap:18px;padding:20px 24px;list-style:none;display:flex}.syllabus-unit summary::-webkit-details-marker{display:none}.syllabus-unit summary:after{content:"+";color:var(--green);flex:none;font-size:24px;font-weight:700}.syllabus-unit[open] summary:after{content:"−"}.syllabus-unit summary h2{margin:0;font:600 clamp(20px,2.5vw,27px) Iowan Old Style,Palatino Linotype,Georgia,serif}.syllabus-unit summary span{color:var(--muted);margin-left:auto;font-size:13px}.syllabus-unit>.knowledge-point-directory-grid{border-top:1px solid var(--line);padding:0 18px 18px}.syllabus-unit .entry-card{min-height:0;margin-top:18px}.entry-card-planned{background:#fbfbf7}.content-status{font-weight:700;color:var(--green)!important}.knowledge-point-directory .katex-display{overflow:auto hidden}.learning-progress-panel{border:1px solid var(--line);border-left:4px solid var(--green);background:#f9fbfd;grid-template-columns:minmax(0,1fr) auto;align-items:end;gap:24px;margin:32px 0;padding:20px 24px;display:grid}.learning-progress-panel h2{margin:4px 0 8px;font-size:1.35rem}.learning-progress-panel p{color:var(--muted);margin:0}.learning-progress-actions{flex-wrap:wrap;justify-content:end;align-items:end;gap:10px;display:flex}.learning-progress-actions label{color:var(--muted);gap:5px;font-size:.86rem;font-weight:700;display:grid}.learning-progress-actions input[type=number]{width:84px;min-height:40px;font:inherit;border:1px solid #aab9c9;border-radius:4px;padding:7px}.learning-progress-actions button{border:1px solid var(--green);color:#fff;background:var(--green);min-height:40px;font:inherit;cursor:pointer;border-radius:4px;padding:8px 12px;font-weight:700}.learning-progress-actions button:disabled{border-color:var(--line);color:#8a95a5;cursor:not-allowed;background:#edf1f5}.learning-progress-actions .learning-progress-checkbox{align-items:center;gap:7px;max-width:210px;display:flex}.learning-progress-actions .learning-progress-checkbox input{width:17px;height:17px}.topic-page{width:min(920px,92vw)}.knowledge-page-layout{grid-template-columns:220px minmax(0,920px);align-items:start;gap:44px;width:min(1220px,94vw);margin:0 auto;display:grid}.knowledge-page-layout .knowledge-point-page{width:100%;margin:0}.course-directory{padding-top:54px;position:sticky;top:94px}.course-directory-title{color:var(--muted);letter-spacing:.1em;text-transform:uppercase;margin:0 0 14px;font-size:.75rem;font-weight:700}.course-directory nav{border-top:1px solid var(--line);display:grid}.course-directory a{border-bottom:1px solid var(--line);color:var(--muted);grid-template-columns:1.5rem minmax(0,1fr);gap:8px;padding:12px 10px;font-size:.88rem;line-height:1.35;text-decoration:none;display:grid}.course-directory a span{color:#8a95a5;font-variant-numeric:tabular-nums}.course-directory a:hover{color:var(--green);background:#f9fbfd}.course-directory a[aria-current=page]{color:var(--green);background:var(--lime);box-shadow:inset 3px 0 var(--green);font-weight:700}.knowledge-point-page>nav[aria-label=Breadcrumb] a{color:var(--green);text-underline-offset:3px;font-size:.88rem}.lesson-content{background:var(--paper);border:1px solid var(--line);border-radius:8px;width:100%;max-width:760px;margin-inline:auto;padding:clamp(24px,4vw,46px);line-height:1.75}.lesson-content h2,.question-section>h2{margin-top:2em;font:500 32px Iowan Old Style,Palatino Linotype,Georgia,serif}.lesson-content>section:first-child>h2{margin-top:0}.lesson-content-tail{margin-top:34px}.lesson-content h3{margin-top:1.8em;font:600 22px Iowan Old Style,Palatino Linotype,Georgia,serif}.lesson-content .katex-display{padding:.5rem 0;overflow:auto hidden}.question-section{width:100%;max-width:920px;margin:34px auto 0}.question-bank-count{color:var(--muted);font-variant-numeric:tabular-nums;margin:-.5rem 0 1.25rem}.practice-question-list{gap:2rem;display:grid}.topic-bank-links{gap:18px;margin-top:24px;display:grid}.topic-bank-group{border:1px solid var(--line);background:color-mix(in srgb, var(--paper) 94%, var(--lime));border-radius:7px;padding:18px}.topic-bank-group h2{color:var(--ink);margin:0 0 12px;font:650 18px/1.3 -apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}.topic-bank-group>div{grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:9px;display:grid}.topic-bank-links a{border:1px solid var(--line);color:var(--green);background:var(--paper);border-radius:5px;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;padding:10px 14px;font-weight:700;text-decoration:none;display:flex}.topic-bank-links a span{color:var(--muted);font-size:14px;font-weight:600}.topic-bank-links a:hover{background:#f9fbfd;border-color:#8ba8c4}.topic-bank-planned{border:1px solid var(--line);color:var(--muted);background:color-mix(in srgb, var(--paper) 82%, var(--background));border-radius:5px;gap:3px;padding:10px 14px;display:grid}.topic-bank-planned span{font-size:12px}.mock-paper-review-page{width:min(1040px,92vw);padding-top:42px}.mock-paper-review-header{max-width:780px}.mock-paper-review-header h1{margin:.2em 0 0;font:500 clamp(38px,5vw,56px)/1.08 Iowan Old Style,Palatino Linotype,Georgia,serif}.mock-paper-summary{border-block:1px solid var(--line);grid-template-columns:repeat(4,minmax(0,1fr));margin:34px 0 0;display:grid}.mock-paper-summary>div{padding:17px 20px 18px 0}.mock-paper-summary>div+div{border-left:1px solid var(--line);padding-left:20px}.mock-paper-summary dt{color:var(--muted);letter-spacing:.09em;text-transform:uppercase;margin-bottom:6px;font-size:.72rem;font-weight:700}.mock-paper-summary dd{margin:0;font:600 1.05rem Iowan Old Style,Palatino Linotype,Georgia,serif}.mock-paper-review-note{border-left:3px solid var(--green);color:var(--muted);grid-template-columns:max-content minmax(0,1fr);gap:14px;margin:24px 0 0;padding:12px 0 12px 16px;line-height:1.55;display:grid}.mock-paper-review-note strong{color:var(--ink)}.mock-paper-review-note p{margin:0}.mock-paper-selection{border:1px solid var(--line);background:#f4f6f7;border-radius:5px;grid-template-columns:repeat(2,minmax(92px,1fr));margin-top:22px;padding:3px;display:inline-grid}.mock-paper-selection a{color:var(--muted);text-align:center;border-radius:3px;padding:8px 16px;font-weight:700;text-decoration:none}.mock-paper-selection a[aria-current=page]{color:#fff;background:var(--green)}.mock-paper-review-controls{flex-wrap:wrap;gap:10px;margin-top:24px;display:flex}.mock-paper-review-controls button{min-height:42px;color:var(--green);background:var(--paper);font:inherit;cursor:pointer;border:1px solid #7890a8;border-radius:4px;padding:9px 15px;font-weight:700}.mock-paper-review-controls button:hover{background:#f9fbfd}.mock-paper-review-controls button[aria-pressed=true]{color:#fff;background:var(--green);border-color:var(--green)}.mock-paper-review-controls button:last-child{margin-left:auto}.mock-paper-jump-nav{background:var(--line);border:1px solid var(--line);grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;margin-top:30px;display:grid}.mock-paper-jump-nav a{color:var(--muted);background:var(--paper);gap:4px;padding:17px 20px;text-decoration:none;display:grid}.mock-paper-jump-nav a:hover{background:#f9fbfd}.mock-paper-jump-nav a span{color:var(--green);font-weight:750}.mock-paper-section{margin-top:64px;scroll-margin-top:92px}.mock-paper-section-header{border-bottom:2px solid var(--ink);grid-template-columns:minmax(0,1fr) auto;padding-bottom:18px;display:grid}.mock-paper-section-header>p:first-child{color:var(--green);letter-spacing:.08em;text-transform:uppercase;grid-column:1/-1;margin:0 0 6px;font-size:.78rem;font-weight:750}.mock-paper-section-header h2{margin:0;font:500 clamp(28px,4vw,38px) Iowan Old Style,Palatino Linotype,Georgia,serif}.mock-paper-section-context{color:var(--muted);font-variant-numeric:tabular-nums;justify-content:flex-end;align-items:baseline;gap:18px;font-size:.86rem;display:flex}.mock-paper-section-header>p:last-child{max-width:720px;color:var(--muted);grid-column:1/-1;margin:12px 0 0;line-height:1.6}.mock-paper-question-list{gap:24px;margin-top:24px;display:grid}.mock-paper-question-list .question-paper-card{margin:0}.question-paper-card{background:var(--paper);border:1px solid var(--line);border-radius:6px;grid-template-columns:3.25rem minmax(0,1fr);margin:14px 0;line-height:1.65;display:grid;overflow:hidden}.question-number-gutter{border-right:1px solid var(--line);color:var(--green);text-align:center;padding:1.35rem .5rem;font:600 1.15rem Iowan Old Style,Palatino Linotype,Georgia,serif}.question-paper-body{min-width:0;padding:1.35rem clamp(1rem,3vw,2rem) 1.75rem}.question-metadata{color:var(--muted);letter-spacing:.04em;flex-wrap:wrap;gap:.45rem 1rem;margin-bottom:1rem;font-size:12px;display:flex}.question-metadata-item+.question-metadata-item:before{content:"•";color:#9da69f;margin-right:1rem}.question-stem{margin:.5rem 0 1.75rem}.question-context-block{margin:1.5rem 0}.question-context-block-labelled{grid-template-columns:2.4rem minmax(0,1fr);column-gap:.75rem;display:grid}.question-context-content{min-width:0}.question-source-label{margin-right:.75rem;font-weight:700;display:inline-block}.question-figure{width:min(100%,34rem);margin:.25rem auto 1.75rem}.question-figure img{border:1px solid var(--line);background:#fff;width:100%;height:auto;display:block}.question-figure figcaption{color:var(--muted);text-align:center;margin-top:.5rem;font-size:.78rem}.solution-figure{width:min(100%,34rem);margin:1rem auto 0}.solution-figure img{border:1px solid var(--line);background:#fff;width:100%;height:auto;display:block}.solution-figure figcaption{color:var(--muted);text-align:center;margin-top:.5rem;font-size:.78rem}.past-paper-question .question-figure{width:100%}.past-paper-question .question-figure img{border:0;width:auto;max-width:100%;margin-inline:auto}.past-paper-transcription-status{color:var(--muted);margin:1rem 0;font-weight:650}.question-stem>:first-child,.question-context-block>:first-child,.question-part-content>:first-child,.solution-step-explanation>:first-child,.solution-math-line>:first-child,.solution-final-answer>:first-child{margin-top:0}.question-stem>:last-child,.question-context-block>:last-child,.question-part-content>:last-child,.solution-step-explanation>:last-child,.solution-math-line>:last-child,.solution-final-answer>:last-child{margin-bottom:0}.question-part{grid-template-columns:2.4rem minmax(0,1fr) minmax(3rem,auto);align-items:start;column-gap:.75rem;display:grid}.question-part.question-part-single{grid-template-columns:minmax(0,1fr) minmax(3rem,auto)}.question-part.question-part-compound{grid-template-columns:4.5rem minmax(0,1fr) minmax(3rem,auto)}.question-part+.question-part{margin-top:1.5rem}.question-part-label{white-space:nowrap;font-weight:700}.question-part-content{min-width:0}.math-table-scroll{border:1px solid var(--line);background:var(--paper);max-width:100%;margin:1rem 0;overflow-x:auto}.math-table{border-collapse:collapse;font-variant-numeric:tabular-nums;width:100%;min-width:max-content}.math-table th,.math-table td{border-right:1px solid var(--line);text-align:center;white-space:nowrap;min-width:5rem;padding:.7rem 1rem}.math-table th:last-child,.math-table td:last-child{border-right:0}.math-table thead{border-bottom:1px solid var(--ink)}.math-table th{color:var(--ink);background:#f3f6f9;font-weight:650}.math-table-scroll:has(.math-table-paired-data){background:0 0;border:0;width:max-content;max-width:100%;margin-inline:0}.math-table-paired-data{width:auto}.math-table-paired-data thead{border-bottom:0}.math-table-paired-data th,.math-table-paired-data td{background:#fff;border-right:0;min-width:5.75rem;padding:.25rem .85rem;font-weight:400}.math-table-paired-data th:first-child,.math-table-paired-data td:first-child{text-align:left;border-right:1px solid var(--ink);min-width:3.5rem}.question-command-term{margin-bottom:.15rem;font-weight:700;display:block}.question-part-marks{text-align:right;font-variant-numeric:tabular-nums;justify-self:end;min-width:3rem}.question-learning-treatment{border-top:1px solid var(--line);margin-top:1.75rem;padding-top:1.25rem}.question-learning-treatment button{border:1px solid var(--green);color:#fff;background:var(--green);font:inherit;cursor:pointer;border-radius:5px;padding:.65rem 1rem;font-weight:700}.question-learning-treatment button:disabled{cursor:default;opacity:.55}.foundation-feedback,.checkpoint-solution,.question-paper-card-worked .stepwise-solution{margin-top:1.25rem}.solution-part+.solution-part{margin-top:2rem}.solution-part h4{margin:0 0 .85rem;font:600 1.15rem Iowan Old Style,Palatino Linotype,Georgia,serif}.solution-step-list{margin:0;padding:0;list-style:none}.solution-step{border-top:1px solid #ecefea;grid-template-columns:minmax(0,1fr) minmax(7.5rem,12rem);gap:1rem;padding:1rem 0;display:grid}.solution-step:first-child{border-top:0}.solution-step-working{min-width:0}.solution-step h5{color:var(--muted);letter-spacing:.08em;text-transform:uppercase;margin:0 0 .4rem;font-size:.75rem}.solution-math-line{width:100%;margin-top:.45rem;display:block;overflow:auto hidden}.solution-math-line .katex-display{margin:.4rem 0;overflow:auto hidden}.solution-step-marks{color:var(--muted);border-left:2px solid #e4e8e2;align-self:stretch;padding-left:.85rem;font-size:.78rem}.solution-markscheme-point+.solution-markscheme-point{margin-top:.6rem}.solution-markscheme-point strong{color:var(--green);display:block}.solution-markscheme-point>p{margin:.35rem 0 0}.solution-final-answer{border-left:4px solid var(--green);background:#eef3f8;margin-top:.75rem;padding:.9rem 1rem}.solution-final-answer>strong{margin-bottom:.35rem;display:block}.solution-final-answer .katex-display{margin:.25rem 0;overflow:auto hidden}.question-paper-card-foundation{border-left:4px solid #8ba8c4}.question-paper-card-worked{border-left:4px solid var(--green)}.question-paper-card-checkpoint{border-left:4px solid #3e648a}.question-paper-card .katex-display{width:100%;display:block;overflow:auto hidden}.question-paper-card-source-faithful{color:#000;background:#fff;border:0;border-radius:0;grid-template-columns:2.25rem minmax(0,1fr);margin:0;font-family:Arial,Helvetica,sans-serif;font-size:1rem;line-height:1.45}.question-paper-card-source-faithful .question-number-gutter{color:#000;text-align:left;border-right:0;padding:.15rem .25rem 0;font-family:inherit;font-size:1rem;font-weight:400}.question-paper-card-source-faithful .question-paper-body{padding:0 1.35rem 1.5rem}.question-paper-card-source-faithful .question-part-label,.question-paper-card-source-faithful .question-command-term,.question-paper-card-source-faithful .question-source-label{color:#000;font-weight:400}.question-source-maximum-mark{margin:0 0 1rem;font-size:.9rem}.question-paper-card-source-faithful .question-stem{margin:0 0 1rem}.question-paper-card-source-faithful .question-context-block{margin:1rem 0}.question-paper-card-source-faithful .question-context-block-labelled{grid-template-columns:2.4rem minmax(0,1fr);column-gap:.5rem}.question-paper-card-source-faithful .question-context-block-labelled .question-source-label{margin:0}.question-paper-card-source-faithful .question-part{grid-template-columns:2.4rem minmax(0,1fr) minmax(2.5rem,auto);column-gap:.5rem}.question-paper-card-source-faithful .question-part.question-part-single{grid-template-columns:minmax(0,1fr) minmax(2.5rem,auto)}.question-paper-card-source-faithful .question-part.question-part-label-supplied{min-width:0;padding-right:2.75rem;display:block;position:relative}.question-paper-card-source-faithful .question-part.question-part-source-labelled .question-part-content{inline-size:100%;min-inline-size:0}.question-paper-card-source-faithful .question-part.question-part-label-supplied .question-part-marks{position:absolute;top:0;right:0}.question-paper-card-source-faithful .question-part+.question-part{margin-top:.85rem}.question-paper-card-source-faithful .question-command-term{margin:0 .45rem 0 0;font-weight:400;display:inline}.question-paper-card-source-faithful .question-part-label{font-weight:400}.question-paper-card-source-faithful .question-part-content>p{display:inline}.question-paper-card-source-faithful .question-part-marks{font-weight:400}.question-paper-card-source-faithful .question-source-continuation-marks{text-align:right;margin-top:-.15rem}.source-answer-workspace{border:1px solid #000;gap:1.15rem;min-height:10rem;margin-top:1rem;padding:1.1rem .8rem;display:grid}.source-answer-workspace-working_box{grid-template-rows:minmax(10rem,1fr) 2.4rem;grid-template-columns:1fr 40%;gap:0;padding:0}.source-answer-workspace-working_box .source-working-label{grid-area:1/1;padding:.7rem;font-family:Georgia,serif;font-style:italic;font-weight:700}.source-answer-workspace-working_box .source-answer-line{background:#000;grid-area:2/2;align-self:end;margin:0 .8rem .55rem}.source-final-answer-label{border:0;border-top:1px solid #000;border-left:1px solid #000;grid-area:2/2;align-self:start;padding:.35rem .8rem;font-family:Georgia,serif;font-style:italic;font-weight:700}.source-answer-labels{border:0;border-top:1px solid #000;border-left:1px solid #000;grid-area:2/2;align-self:center;gap:.35rem;padding:.35rem .8rem;font-family:Georgia,serif;font-style:italic;display:grid}.source-answer-label-line{grid-template-columns:2rem 1fr;align-items:end;gap:.25rem;display:grid}.source-answer-label-line i{background:#000;height:1px;display:block}.source-answer-line{background:repeating-linear-gradient(90deg,#000 0 2px,#0000 2px 10px);height:1px}.question-paper-card-source-faithful .question-learning-treatment{margin-top:1rem}.question-source-solution{color:#000;font-family:Arial,Helvetica,sans-serif;font-size:1rem;line-height:1.45}.question-source-solution-block+.question-source-solution-block{margin-top:1.35rem}.question-source-solution-label{margin-bottom:.45rem;font-weight:400}.question-source-solution .katex-display{margin:.55rem 0}.adjacent-knowledge-navigation{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;width:100%;max-width:760px;margin:34px auto 0;display:grid}.adjacent-navigation-link{border:1px solid var(--line);min-width:0;min-height:96px;color:var(--green);background:var(--paper);border-radius:8px;flex-direction:column;justify-content:center;gap:8px;padding:18px 22px;text-decoration:none;transition:border-color .15s,box-shadow .15s,transform .15s;display:flex}.adjacent-navigation-link:hover{background:#f9fbfd;border-color:#8ba8c4}.adjacent-navigation-direction{color:var(--muted);letter-spacing:.08em;text-transform:uppercase;font-size:.75rem;font-weight:700}.adjacent-navigation-link strong{line-height:1.4}.adjacent-navigation-next{text-align:right}@media (width<=1050px){.knowledge-page-layout{width:92vw;display:block}.knowledge-page-layout .knowledge-point-page{width:100%;padding-top:28px}.learning-progress-panel{grid-template-columns:1fr}.learning-progress-actions{justify-content:start}.course-directory{padding-top:24px;position:static}.course-directory-title{margin-bottom:10px}.course-directory nav{border-top:0;gap:8px;padding-bottom:8px;display:flex;overflow-x:auto}.course-directory a{border:1px solid var(--line);white-space:nowrap;border-radius:4px;flex:none;grid-template-columns:auto auto;padding:9px 12px}.course-directory a[aria-current=page]{box-shadow:inset 0 -3px var(--green)}}@media (width<=800px){.public-header{flex-wrap:wrap;align-items:flex-start;gap:12px}.public-header .brand{width:100%}.primary-navigation{margin-left:0}.course-switch{margin-left:auto}.page{width:92vw;padding:30px 0 72px}.entry-grid,.knowledge-point-directory-grid,.past-paper-grid,.past-paper-topic-grid,.past-paper-syllabus-directory,.past-paper-directory-paper-grid,.past-paper-year-browser,.past-paper-directory-layout{grid-template-columns:1fr}.past-paper-year-navigation{padding:14px;position:static}.past-paper-year-navigation>div{gap:6px;display:flex;overflow-x:auto}.past-paper-year-navigation button{flex:none}.past-paper-year-navigation a{flex:none;min-width:58px}.past-paper-directory-results,.past-paper-year,.past-paper-domain{padding:20px}.past-paper-year-header{flex-direction:column;align-items:start}.past-paper-question-header{flex-direction:column;align-items:start;gap:14px}.past-paper-question-viewer{height:72vh}.syllabus-unit summary{flex-wrap:wrap;align-items:flex-start;padding:18px}.syllabus-unit summary span{width:calc(100% - 2rem);margin-left:0}.syllabus-unit summary:after{margin-left:auto}.syllabus-unit>.knowledge-point-directory-grid{padding:0 12px 12px}.entry-card,.lesson-content{padding:22px}.topic-page h1{font-size:38px}.mock-paper-review-page{padding-top:28px}.mock-paper-summary{grid-template-columns:repeat(2,minmax(0,1fr))}.mock-paper-summary>div:nth-child(3){border-left:0}.mock-paper-summary>div:nth-child(n+3){border-top:1px solid var(--line)}.mock-paper-summary>div:nth-child(odd){padding-left:0}.mock-paper-review-note{grid-template-columns:1fr;gap:5px}.mock-paper-section{margin-top:48px}.mock-paper-section-header{grid-template-columns:1fr}.mock-paper-section-context{justify-content:flex-start;margin-top:10px}.lesson-content h2,.question-section>h2{font-size:27px}.question-paper-card{grid-template-columns:2rem minmax(0,1fr)}.question-number-gutter{padding:1rem .25rem;font-size:.95rem}.question-paper-body{padding:1rem .85rem 1.35rem}.question-part{grid-template-columns:1.9rem minmax(0,1fr) minmax(2.5rem,auto);column-gap:.4rem}.solution-step{grid-template-columns:minmax(0,1fr)}.solution-step-marks{border-top:1px solid #e4e8e2;border-left:0;padding:.65rem 0 0}.adjacent-knowledge-navigation{grid-template-columns:1fr}.adjacent-navigation-next{text-align:left}}@media (width<=520px){.mock-paper-review-controls{display:grid}.mock-paper-review-controls button:last-child{margin-left:0}.mock-paper-jump-nav,.mock-paper-summary{grid-template-columns:1fr}.mock-paper-summary>div,.mock-paper-summary>div+div{border-top:1px solid var(--line);border-left:0;padding:13px 0}.mock-paper-summary>div:first-child{border-top:0}}@media print{@page{size:A4;margin:15mm 14mm 17mm}html,body{color:#000;background:#fff}.public-header,.mock-paper-review-note,.mock-paper-selection,.mock-paper-review-controls,.mock-paper-jump-nav{display:none!important}.mock-paper-review-page{width:100%;padding:0}.mock-paper-review-header h1{font-size:27pt}.mock-paper-review-header .eyebrow,.mock-paper-review-header .lead,.mock-paper-summary>div:last-child{display:none}.mock-paper-summary{grid-template-columns:repeat(3,minmax(0,1fr));margin-top:8mm}.mock-paper-section{margin-top:12mm}.mock-paper-section-header{break-after:avoid}.mock-paper-question-list{gap:7mm}.question-paper-card{border-color:#9aa1aa}.question-part,.question-figure,.solution-step,.solution-final-answer{break-inside:avoid}.question-metadata,.mock-paper-review-page[data-review-mode=paper] .question-learning-treatment{display:none}.mock-paper-review-page[data-review-mode=markscheme] .question-learning-treatment{break-before:avoid}.mock-paper-review-page[data-review-mode=markscheme] .solution-part{break-inside:avoid}}@font-face{font-display:block;font-family:KaTeX_AMS;font-style:normal;font-weight:400;src:url(/assets/KaTeX_AMS-Regular-BQhdFMY1.woff2)format("woff2"),url(/assets/KaTeX_AMS-Regular-DMm9YOAa.woff)format("woff"),url(/assets/KaTeX_AMS-Regular-DRggAlZN.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:700;src:url(/assets/KaTeX_Caligraphic-Bold-Dq_IR9rO.woff2)format("woff2"),url(/assets/KaTeX_Caligraphic-Bold-BEiXGLvX.woff)format("woff"),url(/assets/KaTeX_Caligraphic-Bold-ATXxdsX0.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Caligraphic;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Caligraphic-Regular-Di6jR-x-.woff2)format("woff2"),url(/assets/KaTeX_Caligraphic-Regular-CTRA-rTL.woff)format("woff"),url(/assets/KaTeX_Caligraphic-Regular-wX97UBjC.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:700;src:url(/assets/KaTeX_Fraktur-Bold-CL6g_b3V.woff2)format("woff2"),url(/assets/KaTeX_Fraktur-Bold-BsDP51OF.woff)format("woff"),url(/assets/KaTeX_Fraktur-Bold-BdnERNNW.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Fraktur;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Fraktur-Regular-CTYiF6lA.woff2)format("woff2"),url(/assets/KaTeX_Fraktur-Regular-Dxdc4cR9.woff)format("woff"),url(/assets/KaTeX_Fraktur-Regular-CB_wures.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:700;src:url(/assets/KaTeX_Main-Bold-Cx986IdX.woff2)format("woff2"),url(/assets/KaTeX_Main-Bold-Jm3AIy58.woff)format("woff"),url(/assets/KaTeX_Main-Bold-waoOVXN0.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:700;src:url(/assets/KaTeX_Main-BoldItalic-DxDJ3AOS.woff2)format("woff2"),url(/assets/KaTeX_Main-BoldItalic-SpSLRI95.woff)format("woff"),url(/assets/KaTeX_Main-BoldItalic-DzxPMmG6.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:italic;font-weight:400;src:url(/assets/KaTeX_Main-Italic-NWA7e6Wa.woff2)format("woff2"),url(/assets/KaTeX_Main-Italic-BMLOBm91.woff)format("woff"),url(/assets/KaTeX_Main-Italic-3WenGoN9.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Main;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Main-Regular-B22Nviop.woff2)format("woff2"),url(/assets/KaTeX_Main-Regular-Dr94JaBh.woff)format("woff"),url(/assets/KaTeX_Main-Regular-ypZvNtVU.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:700;src:url(/assets/KaTeX_Math-BoldItalic-CZnvNsCZ.woff2)format("woff2"),url(/assets/KaTeX_Math-BoldItalic-iY-2wyZ7.woff)format("woff"),url(/assets/KaTeX_Math-BoldItalic-B3XSjfu4.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Math;font-style:italic;font-weight:400;src:url(/assets/KaTeX_Math-Italic-t53AETM-.woff2)format("woff2"),url(/assets/KaTeX_Math-Italic-DA0__PXp.woff)format("woff"),url(/assets/KaTeX_Math-Italic-flOr_0UB.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:700;src:url(/assets/KaTeX_SansSerif-Bold-D1sUS0GD.woff2)format("woff2"),url(/assets/KaTeX_SansSerif-Bold-DbIhKOiC.woff)format("woff"),url(/assets/KaTeX_SansSerif-Bold-CFMepnvq.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:italic;font-weight:400;src:url(/assets/KaTeX_SansSerif-Italic-C3H0VqGB.woff2)format("woff2"),url(/assets/KaTeX_SansSerif-Italic-DN2j7dab.woff)format("woff"),url(/assets/KaTeX_SansSerif-Italic-YYjJ1zSn.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_SansSerif;font-style:normal;font-weight:400;src:url(/assets/KaTeX_SansSerif-Regular-DDBCnlJ7.woff2)format("woff2"),url(/assets/KaTeX_SansSerif-Regular-CS6fqUqJ.woff)format("woff"),url(/assets/KaTeX_SansSerif-Regular-BNo7hRIc.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Script;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Script-Regular-D3wIWfF6.woff2)format("woff2"),url(/assets/KaTeX_Script-Regular-D5yQViql.woff)format("woff"),url(/assets/KaTeX_Script-Regular-C5JkGWo-.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size1;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Size1-Regular-mCD8mA8B.woff2)format("woff2"),url(/assets/KaTeX_Size1-Regular-C195tn64.woff)format("woff"),url(/assets/KaTeX_Size1-Regular-Dbsnue_I.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size2;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Size2-Regular-Dy4dx90m.woff2)format("woff2"),url(/assets/KaTeX_Size2-Regular-oD1tc_U0.woff)format("woff"),url(/assets/KaTeX_Size2-Regular-B7gKUWhC.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size3;font-style:normal;font-weight:400;src:url(data:font/woff2;base64,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)format("woff2"),url(/assets/KaTeX_Size3-Regular-CTq5MqoE.woff)format("woff"),url(/assets/KaTeX_Size3-Regular-DgpXs0kz.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Size4;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Size4-Regular-Dl5lxZxV.woff2)format("woff2"),url(/assets/KaTeX_Size4-Regular-BF-4gkZK.woff)format("woff"),url(/assets/KaTeX_Size4-Regular-DWFBv043.ttf)format("truetype")}@font-face{font-display:block;font-family:KaTeX_Typewriter;font-style:normal;font-weight:400;src:url(/assets/KaTeX_Typewriter-Regular-CO6r4hn1.woff2)format("woff2"),url(/assets/KaTeX_Typewriter-Regular-C0xS9mPB.woff)format("woff"),url(/assets/KaTeX_Typewriter-Regular-D3Ib7_Hf.ttf)format("truetype")}.katex{text-indent:0;text-rendering:auto;font:1.21em/1.2 KaTeX_Main,Times New Roman,serif;position:relative}.katex *{border-color:currentColor;-ms-high-contrast-adjust:none!important}.katex .katex-version:after{content:"0.17.0"}.katex .katex-mathml{clip-path:inset(50%);border:0;width:1px;height:1px;padding:0;position:absolute;overflow:hidden}.katex .katex-html>.newline{display:block}.katex .base{white-space:nowrap;width:min-content;position:relative}.katex .base,.katex .strut{display:inline-block}.katex .textbf{font-weight:700}.katex .textit{font-style:italic}.katex .textrm{font-family:KaTeX_Main}.katex .textsf{font-family:KaTeX_SansSerif}.katex .texttt{font-family:KaTeX_Typewriter}.katex .mathnormal{font-family:KaTeX_Math;font-style:italic}.katex .mathit{font-family:KaTeX_Main;font-style:italic}.katex .mathrm{font-style:normal}.katex .mathbf{font-family:KaTeX_Main;font-weight:700}.katex .boldsymbol{font-family:KaTeX_Math;font-style:italic;font-weight:700}.katex .amsrm,.katex .mathbb,.katex .textbb{font-family:KaTeX_AMS}.katex .mathcal{font-family:KaTeX_Caligraphic}.katex .mathfrak,.katex .textfrak{font-family:KaTeX_Fraktur}.katex .mathboldfrak,.katex .textboldfrak{font-family:KaTeX_Fraktur;font-weight:700}.katex .mathtt{font-family:KaTeX_Typewriter}.katex .mathscr,.katex .textscr{font-family:KaTeX_Script}.katex .mathsf,.katex .textsf{font-family:KaTeX_SansSerif}.katex .mathboldsf,.katex .textboldsf{font-family:KaTeX_SansSerif;font-weight:700}.katex .mathitsf,.katex .mathsfit,.katex .textitsf{font-family:KaTeX_SansSerif;font-style:italic}.katex .mainrm{font-family:KaTeX_Main;font-style:normal}.katex .vlist-t{border-collapse:collapse;table-layout:fixed;display:inline-table}.katex .vlist-r{display:table-row}.katex .vlist{vertical-align:bottom;display:table-cell;position:relative}.katex .vlist>span{height:0;display:block;position:relative}.katex .vlist>span>span{display:inline-block}.katex .vlist>span>.pstrut{width:0;overflow:hidden}.katex .vlist-t2{margin-right:-2px}.katex .vlist-s{vertical-align:bottom;width:2px;min-width:2px;font-size:1px;display:table-cell}.katex .vbox{flex-direction:column;align-items:baseline;display:inline-flex}.katex .hbox{width:100%}.katex .hbox,.katex .thinbox{flex-direction:row;display:inline-flex}.katex .thinbox{width:0;max-width:0}.katex .msupsub{text-align:left}.katex .mfrac>span>span{text-align:center}.katex .mfrac .frac-line{border-bottom-style:solid;width:100%;display:inline-block}.katex .hdashline,.katex .hline,.katex .mfrac .frac-line,.katex .overline .overline-line,.katex .rule,.katex .underline .underline-line{min-height:1px}.katex .mspace{display:inline-block}.katex .smash{line-height:0;display:inline}.katex .clap,.katex .llap,.katex .rlap{width:0;position:relative}.katex .clap>.inner,.katex .llap>.inner,.katex .rlap>.inner{position:absolute}.katex .clap>.fix,.katex .llap>.fix,.katex .rlap>.fix{display:inline-block}.katex .llap>.inner{right:0}.katex .clap>.inner,.katex .rlap>.inner{left:0}.katex .clap>.inner>span{margin-left:-50%;margin-right:50%}.katex .rule{border:0 solid;display:inline-block;position:relative}.katex .hline,.katex .overline .overline-line,.katex .underline .underline-line{border-bottom-style:solid;width:100%;display:inline-block}.katex .hdashline{border-bottom-style:dashed;width:100%;display:inline-block}.katex .sqrt>.root{margin-left:.277778em;margin-right:-.555556em}.katex .fontsize-ensurer.reset-size1.size1,.katex .sizing.reset-size1.size1{font-size:1em}.katex .fontsize-ensurer.reset-size1.size2,.katex .sizing.reset-size1.size2{font-size:1.2em}.katex .fontsize-ensurer.reset-size1.size3,.katex .sizing.reset-size1.size3{font-size:1.4em}.katex .fontsize-ensurer.reset-size1.size4,.katex .sizing.reset-size1.size4{font-size:1.6em}.katex .fontsize-ensurer.reset-size1.size5,.katex .sizing.reset-size1.size5{font-size:1.8em}.katex .fontsize-ensurer.reset-size1.size6,.katex .sizing.reset-size1.size6{font-size:2em}.katex .fontsize-ensurer.reset-size1.size7,.katex .sizing.reset-size1.size7{font-size:2.4em}.katex .fontsize-ensurer.reset-size1.size8,.katex .sizing.reset-size1.size8{font-size:2.88em}.katex .fontsize-ensurer.reset-size1.size9,.katex .sizing.reset-size1.size9{font-size:3.456em}.katex .fontsize-ensurer.reset-size1.size10,.katex .sizing.reset-size1.size10{font-size:4.148em}.katex .fontsize-ensurer.reset-size1.size11,.katex .sizing.reset-size1.size11{font-size:4.976em}.katex .fontsize-ensurer.reset-size2.size1,.katex .sizing.reset-size2.size1{font-size:.833333em}.katex .fontsize-ensurer.reset-size2.size2,.katex .sizing.reset-size2.size2{font-size:1em}.katex .fontsize-ensurer.reset-size2.size3,.katex .sizing.reset-size2.size3{font-size:1.16667em}.katex .fontsize-ensurer.reset-size2.size4,.katex .sizing.reset-size2.size4{font-size:1.33333em}.katex .fontsize-ensurer.reset-size2.size5,.katex .sizing.reset-size2.size5{font-size:1.5em}.katex .fontsize-ensurer.reset-size2.size6,.katex .sizing.reset-size2.size6{font-size:1.66667em}.katex .fontsize-ensurer.reset-size2.size7,.katex .sizing.reset-size2.size7{font-size:2em}.katex .fontsize-ensurer.reset-size2.size8,.katex .sizing.reset-size2.size8{font-size:2.4em}.katex .fontsize-ensurer.reset-size2.size9,.katex .sizing.reset-size2.size9{font-size:2.88em}.katex .fontsize-ensurer.reset-size2.size10,.katex .sizing.reset-size2.size10{font-size:3.45667em}.katex .fontsize-ensurer.reset-size2.size11,.katex .sizing.reset-size2.size11{font-size:4.14667em}.katex .fontsize-ensurer.reset-size3.size1,.katex .sizing.reset-size3.size1{font-size:.714286em}.katex .fontsize-ensurer.reset-size3.size2,.katex .sizing.reset-size3.size2{font-size:.857143em}.katex .fontsize-ensurer.reset-size3.size3,.katex .sizing.reset-size3.size3{font-size:1em}.katex .fontsize-ensurer.reset-size3.size4,.katex .sizing.reset-size3.size4{font-size:1.14286em}.katex .fontsize-ensurer.reset-size3.size5,.katex .sizing.reset-size3.size5{font-size:1.28571em}.katex .fontsize-ensurer.reset-size3.size6,.katex .sizing.reset-size3.size6{font-size:1.42857em}.katex .fontsize-ensurer.reset-size3.size7,.katex .sizing.reset-size3.size7{font-size:1.71429em}.katex .fontsize-ensurer.reset-size3.size8,.katex .sizing.reset-size3.size8{font-size:2.05714em}.katex .fontsize-ensurer.reset-size3.size9,.katex .sizing.reset-size3.size9{font-size:2.46857em}.katex .fontsize-ensurer.reset-size3.size10,.katex .sizing.reset-size3.size10{font-size:2.96286em}.katex .fontsize-ensurer.reset-size3.size11,.katex .sizing.reset-size3.size11{font-size:3.55429em}.katex .fontsize-ensurer.reset-size4.size1,.katex .sizing.reset-size4.size1{font-size:.625em}.katex .fontsize-ensurer.reset-size4.size2,.katex .sizing.reset-size4.size2{font-size:.75em}.katex .fontsize-ensurer.reset-size4.size3,.katex .sizing.reset-size4.size3{font-size:.875em}.katex .fontsize-ensurer.reset-size4.size4,.katex .sizing.reset-size4.size4{font-size:1em}.katex .fontsize-ensurer.reset-size4.size5,.katex .sizing.reset-size4.size5{font-size:1.125em}.katex .fontsize-ensurer.reset-size4.size6,.katex .sizing.reset-size4.size6{font-size:1.25em}.katex .fontsize-ensurer.reset-size4.size7,.katex .sizing.reset-size4.size7{font-size:1.5em}.katex .fontsize-ensurer.reset-size4.size8,.katex .sizing.reset-size4.size8{font-size:1.8em}.katex .fontsize-ensurer.reset-size4.size9,.katex .sizing.reset-size4.size9{font-size:2.16em}.katex .fontsize-ensurer.reset-size4.size10,.katex .sizing.reset-size4.size10{font-size:2.5925em}.katex .fontsize-ensurer.reset-size4.size11,.katex .sizing.reset-size4.size11{font-size:3.11em}.katex .fontsize-ensurer.reset-size5.size1,.katex .sizing.reset-size5.size1{font-size:.555556em}.katex .fontsize-ensurer.reset-size5.size2,.katex .sizing.reset-size5.size2{font-size:.666667em}.katex .fontsize-ensurer.reset-size5.size3,.katex .sizing.reset-size5.size3{font-size:.777778em}.katex .fontsize-ensurer.reset-size5.size4,.katex .sizing.reset-size5.size4{font-size:.888889em}.katex .fontsize-ensurer.reset-size5.size5,.katex .sizing.reset-size5.size5{font-size:1em}.katex .fontsize-ensurer.reset-size5.size6,.katex .sizing.reset-size5.size6{font-size:1.11111em}.katex .fontsize-ensurer.reset-size5.size7,.katex .sizing.reset-size5.size7{font-size:1.33333em}.katex .fontsize-ensurer.reset-size5.size8,.katex .sizing.reset-size5.size8{font-size:1.6em}.katex .fontsize-ensurer.reset-size5.size9,.katex .sizing.reset-size5.size9{font-size:1.92em}.katex .fontsize-ensurer.reset-size5.size10,.katex .sizing.reset-size5.size10{font-size:2.30444em}.katex .fontsize-ensurer.reset-size5.size11,.katex .sizing.reset-size5.size11{font-size:2.76444em}.katex .fontsize-ensurer.reset-size6.size1,.katex .sizing.reset-size6.size1{font-size:.5em}.katex .fontsize-ensurer.reset-size6.size2,.katex .sizing.reset-size6.size2{font-size:.6em}.katex .fontsize-ensurer.reset-size6.size3,.katex .sizing.reset-size6.size3{font-size:.7em}.katex .fontsize-ensurer.reset-size6.size4,.katex .sizing.reset-size6.size4{font-size:.8em}.katex .fontsize-ensurer.reset-size6.size5,.katex .sizing.reset-size6.size5{font-size:.9em}.katex .fontsize-ensurer.reset-size6.size6,.katex .sizing.reset-size6.size6{font-size:1em}.katex .fontsize-ensurer.reset-size6.size7,.katex .sizing.reset-size6.size7{font-size:1.2em}.katex .fontsize-ensurer.reset-size6.size8,.katex .sizing.reset-size6.size8{font-size:1.44em}.katex .fontsize-ensurer.reset-size6.size9,.katex .sizing.reset-size6.size9{font-size:1.728em}.katex .fontsize-ensurer.reset-size6.size10,.katex .sizing.reset-size6.size10{font-size:2.074em}.katex .fontsize-ensurer.reset-size6.size11,.katex .sizing.reset-size6.size11{font-size:2.488em}.katex .fontsize-ensurer.reset-size7.size1,.katex .sizing.reset-size7.size1{font-size:.416667em}.katex .fontsize-ensurer.reset-size7.size2,.katex .sizing.reset-size7.size2{font-size:.5em}.katex .fontsize-ensurer.reset-size7.size3,.katex .sizing.reset-size7.size3{font-size:.583333em}.katex .fontsize-ensurer.reset-size7.size4,.katex .sizing.reset-size7.size4{font-size:.666667em}.katex .fontsize-ensurer.reset-size7.size5,.katex .sizing.reset-size7.size5{font-size:.75em}.katex .fontsize-ensurer.reset-size7.size6,.katex .sizing.reset-size7.size6{font-size:.833333em}.katex .fontsize-ensurer.reset-size7.size7,.katex .sizing.reset-size7.size7{font-size:1em}.katex .fontsize-ensurer.reset-size7.size8,.katex .sizing.reset-size7.size8{font-size:1.2em}.katex .fontsize-ensurer.reset-size7.size9,.katex .sizing.reset-size7.size9{font-size:1.44em}.katex .fontsize-ensurer.reset-size7.size10,.katex .sizing.reset-size7.size10{font-size:1.72833em}.katex .fontsize-ensurer.reset-size7.size11,.katex .sizing.reset-size7.size11{font-size:2.07333em}.katex .fontsize-ensurer.reset-size8.size1,.katex .sizing.reset-size8.size1{font-size:.347222em}.katex .fontsize-ensurer.reset-size8.size2,.katex .sizing.reset-size8.size2{font-size:.416667em}.katex .fontsize-ensurer.reset-size8.size3,.katex .sizing.reset-size8.size3{font-size:.486111em}.katex .fontsize-ensurer.reset-size8.size4,.katex .sizing.reset-size8.size4{font-size:.555556em}.katex .fontsize-ensurer.reset-size8.size5,.katex .sizing.reset-size8.size5{font-size:.625em}.katex .fontsize-ensurer.reset-size8.size6,.katex .sizing.reset-size8.size6{font-size:.694444em}.katex .fontsize-ensurer.reset-size8.size7,.katex .sizing.reset-size8.size7{font-size:.833333em}.katex .fontsize-ensurer.reset-size8.size8,.katex .sizing.reset-size8.size8{font-size:1em}.katex .fontsize-ensurer.reset-size8.size9,.katex .sizing.reset-size8.size9{font-size:1.2em}.katex .fontsize-ensurer.reset-size8.size10,.katex .sizing.reset-size8.size10{font-size:1.44028em}.katex .fontsize-ensurer.reset-size8.size11,.katex .sizing.reset-size8.size11{font-size:1.72778em}.katex .fontsize-ensurer.reset-size9.size1,.katex .sizing.reset-size9.size1{font-size:.289352em}.katex .fontsize-ensurer.reset-size9.size2,.katex .sizing.reset-size9.size2{font-size:.347222em}.katex .fontsize-ensurer.reset-size9.size3,.katex .sizing.reset-size9.size3{font-size:.405093em}.katex .fontsize-ensurer.reset-size9.size4,.katex .sizing.reset-size9.size4{font-size:.462963em}.katex .fontsize-ensurer.reset-size9.size5,.katex .sizing.reset-size9.size5{font-size:.520833em}.katex .fontsize-ensurer.reset-size9.size6,.katex .sizing.reset-size9.size6{font-size:.578704em}.katex .fontsize-ensurer.reset-size9.size7,.katex .sizing.reset-size9.size7{font-size:.694444em}.katex .fontsize-ensurer.reset-size9.size8,.katex .sizing.reset-size9.size8{font-size:.833333em}.katex .fontsize-ensurer.reset-size9.size9,.katex .sizing.reset-size9.size9{font-size:1em}.katex .fontsize-ensurer.reset-size9.size10,.katex .sizing.reset-size9.size10{font-size:1.20023em}.katex .fontsize-ensurer.reset-size9.size11,.katex .sizing.reset-size9.size11{font-size:1.43981em}.katex .fontsize-ensurer.reset-size10.size1,.katex .sizing.reset-size10.size1{font-size:.24108em}.katex .fontsize-ensurer.reset-size10.size2,.katex .sizing.reset-size10.size2{font-size:.289296em}.katex .fontsize-ensurer.reset-size10.size3,.katex .sizing.reset-size10.size3{font-size:.337512em}.katex .fontsize-ensurer.reset-size10.size4,.katex .sizing.reset-size10.size4{font-size:.385728em}.katex .fontsize-ensurer.reset-size10.size5,.katex .sizing.reset-size10.size5{font-size:.433944em}.katex .fontsize-ensurer.reset-size10.size6,.katex .sizing.reset-size10.size6{font-size:.48216em}.katex .fontsize-ensurer.reset-size10.size7,.katex .sizing.reset-size10.size7{font-size:.578592em}.katex .fontsize-ensurer.reset-size10.size8,.katex .sizing.reset-size10.size8{font-size:.694311em}.katex .fontsize-ensurer.reset-size10.size9,.katex .sizing.reset-size10.size9{font-size:.833173em}.katex .fontsize-ensurer.reset-size10.size10,.katex .sizing.reset-size10.size10{font-size:1em}.katex .fontsize-ensurer.reset-size10.size11,.katex .sizing.reset-size10.size11{font-size:1.19961em}.katex .fontsize-ensurer.reset-size11.size1,.katex .sizing.reset-size11.size1{font-size:.200965em}.katex .fontsize-ensurer.reset-size11.size2,.katex .sizing.reset-size11.size2{font-size:.241158em}.katex .fontsize-ensurer.reset-size11.size3,.katex .sizing.reset-size11.size3{font-size:.281351em}.katex .fontsize-ensurer.reset-size11.size4,.katex .sizing.reset-size11.size4{font-size:.321543em}.katex .fontsize-ensurer.reset-size11.size5,.katex .sizing.reset-size11.size5{font-size:.361736em}.katex .fontsize-ensurer.reset-size11.size6,.katex .sizing.reset-size11.size6{font-size:.401929em}.katex .fontsize-ensurer.reset-size11.size7,.katex .sizing.reset-size11.size7{font-size:.482315em}.katex .fontsize-ensurer.reset-size11.size8,.katex .sizing.reset-size11.size8{font-size:.578778em}.katex .fontsize-ensurer.reset-size11.size9,.katex .sizing.reset-size11.size9{font-size:.694534em}.katex .fontsize-ensurer.reset-size11.size10,.katex .sizing.reset-size11.size10{font-size:.833601em}.katex .fontsize-ensurer.reset-size11.size11,.katex .sizing.reset-size11.size11{font-size:1em}.katex .delimsizing.size1{font-family:KaTeX_Size1}.katex .delimsizing.size2{font-family:KaTeX_Size2}.katex .delimsizing.size3{font-family:KaTeX_Size3}.katex .delimsizing.size4{font-family:KaTeX_Size4}.katex .delimsizing.mult .delim-size1>span{font-family:KaTeX_Size1}.katex .delimsizing.mult .delim-size4>span{font-family:KaTeX_Size4}.katex .nulldelimiter{width:.12em;display:inline-block}.katex .delimcenter,.katex .op-symbol{position:relative}.katex .op-symbol.small-op{font-family:KaTeX_Size1}.katex .op-symbol.large-op{font-family:KaTeX_Size2}.katex .accent>.vlist-t,.katex .op-limits>.vlist-t{text-align:center}.katex .accent .accent-body{position:relative}.katex .accent .accent-body:not(.accent-full){width:0}.katex .overlay{display:block}.katex .mtable .vertical-separator{min-width:1px;display:inline-block}.katex .mtable .arraycolsep{display:inline-block}.katex .mtable .col-align-c>.vlist-t{text-align:center}.katex .mtable .col-align-l>.vlist-t{text-align:left}.katex .mtable .col-align-r>.vlist-t{text-align:right}.katex .svg-align{text-align:left}.katex svg{fill:currentColor;stroke:currentColor;height:inherit;width:100%;display:block;position:absolute}.katex svg path{stroke:none}.katex svg{fill-rule:nonzero;fill-opacity:1;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1}.katex img{border-style:none;min-width:0;max-width:none;min-height:0;max-height:none}.katex .stretchy{width:100%;display:block;position:relative;overflow:hidden}.katex .stretchy:after,.katex .stretchy:before{content:""}.katex .hide-tail{width:100%;position:relative;overflow:hidden}.katex .halfarrow-left{width:50.2%;position:absolute;left:0;overflow:hidden}.katex .halfarrow-right{width:50.2%;position:absolute;right:0;overflow:hidden}.katex .brace-left{width:25.1%;position:absolute;left:0;overflow:hidden}.katex .brace-center{width:50%;position:absolute;left:25%;overflow:hidden}.katex .brace-right{width:25.1%;position:absolute;right:0;overflow:hidden}.katex .x-arrow-pad{padding:0 .5em}.katex .cd-arrow-pad{padding:0 .55556em 0 .27778em}.katex .mover,.katex .munder,.katex .x-arrow{text-align:center}.katex .boxpad{padding:0 .3em}.katex .fbox,.katex .fcolorbox{box-sizing:border-box;border:.04em solid}.katex .cancel-pad{padding:0 .2em}.katex .cancel-lap{margin-left:-.2em;margin-right:-.2em}.katex .sout{border-bottom-style:solid;border-bottom-width:.08em}.katex .angl{box-sizing:border-box;border-top:.049em solid;border-right:.049em solid;margin-right:.03889em}.katex .anglpad{padding:0 .03889em}.katex .eqn-num:before{content:"(" counter(katexEqnNo) ")";counter-increment:katexEqnNo}.katex .mml-eqn-num:before{content:"(" counter(mmlEqnNo) ")";counter-increment:mmlEqnNo}.katex .mtr-glue{width:50%}.katex .cd-vert-arrow{display:inline-block;position:relative}.katex .cd-label-left{text-align:left;display:inline-block;position:absolute;right:calc(50% + .3em)}.katex .cd-label-right{text-align:right;display:inline-block;position:absolute;left:calc(50% + .3em)}.katex-display{text-align:center;margin:1em 0;display:block}.katex-display>.katex{text-align:center;white-space:nowrap;display:block}.katex-display>.katex>.katex-html{display:block;position:relative}.katex-display>.katex>.katex-html>.tag{position:absolute;right:0}.katex-display.leqno>.katex>.katex-html>.tag{left:0;right:auto}.katex-display.fleqn>.katex{text-align:left;padding-left:2em}body{counter-reset:katexEqnNo mmlEqnNo}