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body.image-open{overflow:hidden}.image-viewer-backdrop{position:fixed;inset:0;z-index:200;background:#183a2de0;display:grid;place-items:center;padding:18px}.image-viewer{background:var(--bg);border-radius:18px;width:min(1100px,100%);height:calc(100dvh - 36px);max-height:900px;display:flex;flex-direction:column;overflow:hidden;box-shadow:0 15px 60px #0004}.image-viewer-header{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 20px;border-bottom:1px solid var(--border)}.image-viewer-header h2{font-size:21px;letter-spacing:-.5px}.image-viewer-close{min-height:44px;flex-shrink:0}.image-viewer-close span{font-size:24px;line-height:1}.image-viewer-frame{flex:1;min-height:0;overflow:auto;overscroll-behavior:contain;padding:18px;background:#fff}.image-viewer-frame img{display:block;width:auto;height:auto;max-width:100%;max-height:100%;margin:0 auto;touch-action:pan-x pan-y pinch-zoom}.image-viewer-frame.zoomed img{width:200%;max-width:none;max-height:none;margin:0}.image-viewer-footer{display:flex;align-items:center;gap:18px;padding:12px 20px;border-top:1px solid var(--border)}.image-viewer-footer p{font-size:12px;color:var(--muted)}.image-viewer-zoom{min-width:105px;min-height:44px;flex-shrink:0}@media(max-width:600px){.image-viewer-backdrop{padding:8px}.image-viewer{height:calc(100dvh - 16px);border-radius:13px}.image-viewer-header{padding:10px 12px}.image-viewer-frame{padding:10px}.image-viewer-footer{padding:10px 12px;gap:12px}.image-viewer-footer p{font-size:10px;line-height:1.6}.image-viewer-header h2{font-size:18px}}

/* Expanded maths collection */
.library-controls{display:flex;gap:18px;margin:24px 0;align-items:end}.library-controls label{display:grid;gap:9px;font-weight:700;font-size:14px;flex:1}.library-controls label:last-child{flex:0 1 245px}.library-controls input,.library-controls select{width:100%;padding:14px 16px;border:1px solid var(--line,#d9dfd4);border-radius:12px;background:#fff;font:inherit;min-height:48px}.library-pagination{display:flex;align-items:center;justify-content:space-between;gap:16px;margin:24px 0 36px;color:#68756b;font-size:14px}.library-pagination>div{display:flex;gap:8px}.paper-card h3{overflow-wrap:anywhere}.full-page.question-image-link{width:100%;max-width:100%}.full-page .question-image{width:100%;max-width:100%;height:auto;max-height:none}.full-page.review-image-button{max-width:400px;width:100%;display:block;margin:14px 0}.full-page .review-image{width:100%;height:auto;max-height:480px;object-fit:contain}.question-number{min-width:44px;width:auto;padding:0 8px;flex-shrink:0}.question-dots{grid-template-columns:repeat(5,minmax(0,1fr))}.question-dots button{font-size:12px}.pdf-label{line-height:1.5}
@media(max-width:600px){.library-controls{flex-direction:column;align-items:stretch;gap:14px}.library-controls label:last-child{flex:auto}.library-pagination{align-items:start;flex-direction:column}.library-pagination>div{width:100%}.library-pagination button{flex:1}.question-dots{grid-template-columns:repeat(5,minmax(0,1fr))}.full-page .question-image{max-height:none}.paper-card h3{min-height:0}}

.paper-meta{flex-wrap:wrap;row-gap:7px}.start-facts{gap:8px;flex-wrap:wrap}.start-facts>span{flex:1;min-width:60px}

.math-blank{display:inline-flex;align-items:center;justify-content:center;min-width:2.6em;height:1.65em;margin:0 .15em;padding:0 .4em;vertical-align:middle;border:2px dashed #8faa8b;border-radius:.45em;background:#fbf3d8;color:#55765b;font-weight:700;line-height:1;white-space:nowrap}
.answer-field>label:has(.math-blank),.question-context:has(.math-blank){font-size:clamp(17px,1.45vw,21px);line-height:1.8;font-weight:600;letter-spacing:.1px}