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p{color:#6b7280;font-size:14px;margin-bottom:24px}.qb-filter-bar{display:flex;flex-wrap:wrap;gap:12px;align-items:flex-end}.qb-filter-bar .ps-select{flex:1 1 140px;min-width:120px}.qb-tag{display:inline-block;padding:2px 9px;border-radius:99px;font-size:12px;font-weight:500;background:var(--color-surface-raised, #f3f4f6);color:var(--color-text-secondary, #6b7280);letter-spacing:.01em}.qb-tag--marks,.qb-tag--difficulty{background:var(--color-surface-subtle, #f9fafb)}.qb-paper-card{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;padding:20px 0;border-bottom:1px solid var(--color-border-subtle, #e5e7eb)}.qb-paper-card:last-child{border-bottom:none}.qb-paper-card-main{flex:1;min-width:0}.qb-paper-card-meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:6px}.qb-paper-card-institution{font-size:15px;font-weight:600;color:var(--color-text-primary, #111)}.qb-paper-card-tags{display:flex;flex-wrap:wrap;gap:4px}.qb-paper-card-info{font-size:13px;color:var(--color-text-secondary, #6b7280);margin:0}.qb-paper-header-tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:4px}.qb-back-link{background:none;border:none;padding:0;font-size:13px;color:var(--color-text-secondary, #6b7280);cursor:pointer;text-align:left}.qb-back-link:hover{color:var(--color-text-primary, #111)}.qb-question{padding:20px 0;border-bottom:1px solid var(--color-border-subtle, #e5e7eb)}.qb-question:last-child{border-bottom:none}.qb-question-header{display:flex;align-items:center;gap:8px;margin-bottom:10px;flex-wrap:wrap}.qb-mcq-options{display:flex;flex-direction:column;gap:6px;margin-top:10px}.qb-mcq-option{display:flex;align-items:flex-start;gap:8px;padding:8px 12px;border-radius:8px;background:var(--color-surface-raised, #f9fafb);font-size:14px}.qb-mcq-option--correct{background:#f0fdf4;border:1px solid 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