#question-body .reviewed-solution-host{--ink:#22352e;--muted:#65716b;--accent:#527460;--tint:#f4f7f4;--line:#d8e1d9;--mark:#eaf1e7;--mark-line:#b9cbb0;--canvas:#f5f6f3;--card:#fff;--gap:34px;--pad:26px;--size:18px}#question-body .reviewed-solution-host *{box-sizing:border-box}#question-body .reviewed-solution-host{margin:0;background:var(--canvas);color:var(--ink);font:16px/1.65 system-ui,-apple-system,"Segoe UI",sans-serif}#question-body .reviewed-solution-host .shell{max-width:1080px;margin:auto;padding:32px 28px 70px}#question-body .reviewed-solution-host .brand{font-size:12px;font-weight:750;letter-spacing:.14em;text-transform:uppercase;color:var(--accent)}#question-body .reviewed-solution-host h1{font-size:28px;line-height:1.25;letter-spacing:-.025em;margin:9px 0}#question-body .reviewed-solution-host p{margin:0 0 16px}#question-body .reviewed-solution-host .subtitle{color:var(--muted);font-size:14px;margin-bottom:24px}#question-body .reviewed-solution-host .controls{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:20px;display:flex;gap:16px;flex-wrap:wrap;align-items:end;margin-bottom:22px}#question-body .reviewed-solution-host .field{display:flex;flex-direction:column;gap:5px;min-width:140px;font-size:12px;font-weight:650;color:var(--muted)}#question-body .reviewed-solution-host .field.wide{flex:1;min-width:240px}#question-body .reviewed-solution-host select,#question-body .reviewed-solution-host button,#question-body .reviewed-solution-host input{font:inherit}#question-body .reviewed-solution-host select{max-width:100%;padding:9px 12px;border:1px solid var(--line);border-radius:8px;background:var(--card);color:var(--ink);font-size:14px}#question-body .reviewed-solution-host button{cursor:pointer;border:1px solid var(--line);border-radius:8px;background:var(--card);color:var(--ink);padding:8px 14px;font-size:14px}#question-body .reviewed-solution-host button:disabled{opacity:.4;cursor:default}#question-body .reviewed-solution-host button:hover:not(:disabled){background:var(--tint)}#question-body .reviewed-solution-host input[type=range]{width:130px;accent-color:var(--accent)}#question-body .reviewed-solution-host input[type=checkbox]{accent-color:var(--accent)}#question-body .reviewed-solution-host .navigation{display:flex;align-items:center;gap:10px;margin:0 0 25px}#question-body .reviewed-solution-host .counter{color:var(--muted);font-size:13px;margin-left:auto}#question-body .reviewed-solution-host .paper{font-size:var(--size);background:var(--card);padding:36px 40px;border-radius:18px;border:1px solid var(--line);overflow-wrap:break-word}#question-body .reviewed-solution-host .question-title{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin:0 0 24px}#question-body .reviewed-solution-host .question-title h1{font-size:30px}#question-body .reviewed-solution-host .total-marks{font-size:14px;white-space:nowrap;color:var(--muted);font-weight:600}#question-body .reviewed-solution-host .question-intro{margin-bottom:26px}#question-body .reviewed-solution-host .part-context{margin:28px 0 20px}#question-body .reviewed-solution-host .part-context h2{font-size:17px;color:var(--accent);margin:0 0 10px}#question-body .reviewed-solution-host .part-block{margin:var(--gap) 0 0;padding-top:var(--gap);border-top:1px solid var(--line)}#question-body .reviewed-solution-host .part-prompt{display:flex;align-items:flex-start;gap:14px;margin-bottom:17px}#question-body .reviewed-solution-host .part-number{flex:none;display:grid;place-items:center;min-width:38px;min-height:34px;padding:3px 8px;border-radius:8px;background:var(--tint);color:var(--accent);font-weight:700;font-size:14px}#question-body .reviewed-solution-host .prompt-content{flex:1;min-width:0}#question-body .reviewed-solution-host .prompt-content p:last-child{margin-bottom:0}#question-body .reviewed-solution-host .worked{background:var(--tint);border:1px solid var(--line);border-radius:12px;padding:var(--pad)}#question-body .reviewed-solution-host .solution-label{font-size:11px;font-weight:750;text-transform:uppercase;letter-spacing:.12em;color:var(--accent);margin-bottom:15px}#question-body .reviewed-solution-host .working>:last-child{margin-bottom:0}#question-body .reviewed-solution-host .display-math{margin:16px 0;overflow-x:auto;overflow-y:hidden}#question-body .reviewed-solution-host .display-math mjx-container{margin:0!important}#question-body .reviewed-solution-host .marking{margin-top:23px;background:var(--mark);border:1px solid var(--mark-line);border-radius:9px;padding:16px 19px;font-size:.88em}#question-body .reviewed-solution-host .marking-title{font-size:12px;font-weight:750;color:var(--accent);margin-bottom:6px}#question-body .reviewed-solution-host .marking-title span{margin-right:5px}#question-body .reviewed-solution-host .checks{list-style:none;padding:0;margin:0}#question-body .reviewed-solution-host .checks li{padding:3px 0 3px 20px;position:relative}#question-body .reviewed-solution-host .checks li:before{content:'✓';position:absolute;left:0;color:var(--accent)}#question-body .reviewed-solution-host .question-line{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:16px;margin-bottom:16px}#question-body .reviewed-solution-host .marks{white-space:nowrap;font-size:.83em;color:var(--muted)}#question-body .reviewed-solution-host figure{margin:20px 0}#question-body .reviewed-solution-host figure img{display:block;max-width:100%;height:auto;border:0}#question-body .reviewed-solution-host .table-wrap{overflow-x:auto;margin:20px 0}#question-body .reviewed-solution-host .data-table{border-collapse:collapse;width:100%;font-size:.85em}#question-body .reviewed-solution-host .data-table th,#question-body .reviewed-solution-host .data-table td{border:1px solid var(--line);padding:9px 12px;text-align:center}#question-body .reviewed-solution-host .data-table th{background:var(--tint);font-weight:650}#question-body .reviewed-solution-host .footer-note{font-size:12px;color:var(--muted);padding:16px 3px}#question-body .reviewed-solution-host .flat .worked{background:transparent;border-left:3px solid var(--line);border-top:0;border-right:0;border-bottom:0;border-radius:0}#question-body .reviewed-solution-host .roomy .part-block{border:1px solid var(--line);border-radius:14px;padding:24px}#question-body .reviewed-solution-host .no-marks .marking{display:none}#question-body .reviewed-solution-host .no-labels .solution-label{display:none}#question-body .reviewed-solution-host :focus-visible{outline:3px solid var(--accent);outline-offset:3px}@media(max-width:650px){#question-body .reviewed-solution-host .shell{padding:18px 12px 40px}#question-body .reviewed-solution-host .paper{padding:23px 17px}#question-body .reviewed-solution-host .controls{padding:15px;gap:12px}#question-body .reviewed-solution-host .field{min-width:120px}#question-body .reviewed-solution-host .field.wide{min-width:100%;max-width:100%}#question-body .reviewed-solution-host .part-prompt{gap:9px}#question-body .reviewed-solution-host .worked{padding:18px}#question-body .reviewed-solution-host .question-title h1{font-size:25px}#question-body .reviewed-solution-host .question-line{gap:8px}#question-body .reviewed-solution-host .roomy .part-block{padding:14px}#question-body .reviewed-solution-host .marking{padding:13px}#question-body .reviewed-solution-host h1{font-size:25px}}

#question-body .reviewed-solution-host{display:block;font:18px/1.65 system-ui,-apple-system,"Segoe UI",sans-serif;color:#28394a;--ink:#28394a;--muted:#637486;--accent:#557b9b;--tint:#f3f7fb;--line:#d5e0eb;--mark:#eaf3f4;--mark-line:#bed6d8;--canvas:#f2f5f8;--gap:52px;--size:18px}
#question-body .reviewed-solution-host mjx-container[display="true"]{text-align:left!important}


/* Legacy solution bundles: consistent reviewed-paper styling without changing
   their underlying equations, marks, images or question structure. */
#question-body .legacy-solution-host{padding:16px;background:#f5f6f3;border-radius:18px}
#question-body .legacy-solution-host .paper{max-width:1050px;margin:auto}
#question-body .legacy-solution-host .solution-label{margin-bottom:22px}
#question-body .legacy-solution-host .legacy-solution-content{background:#f4f7f4;border:1px solid #d8e1d9;border-radius:12px;padding:24px;line-height:1.7}
#question-body .legacy-solution-host .legacy-solution-content .question-heading{border-bottom:1px solid #d8e1d9;padding-bottom:12px;margin-bottom:18px}
#question-body .legacy-solution-host .legacy-solution-content .display-maths{overflow-x:auto;max-width:100%}
#question-body .legacy-solution-host .legacy-solution-content figure img{max-width:100%;height:auto}
@media(max-width:650px){#question-body .legacy-solution-host{padding:6px}#question-body .legacy-solution-host .legacy-solution-content{padding:14px}}