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var(--border-strong);border-radius:6px;width:40px;height:30px;transition:border-color .12s,box-shadow .12s;display:block}.qb-thumb:hover{border-color:var(--accent);box-shadow:0 0 0 3px #2563eb1f}.qb-thumb-answer{border-color:#7c3aed59}.qb-thumb-answer:hover{border-color:#7c3aed;box-shadow:0 0 0 3px #7c3aed1f}.qb-cell-empty{color:var(--muted2);font-size:13px}.qb-actions{white-space:nowrap;flex-shrink:0;align-items:center;gap:6px;display:flex}.btn.btn-icon-xs{justify-content:center;width:26px;height:26px;padding:5px}.tbl-center-2 .data-table-header span:nth-child(n+2){text-align:center}.tbl-center-2 .data-table-row>:nth-child(n+2){text-align:center;justify-content:center;align-items:center;display:flex}.tbl-center-3 .data-table-header span:nth-child(n+3),.tbl-center-3 .data-table-row>:nth-child(3){text-align:center}.tbl-center-3 .data-table-row>:nth-child(n+4){text-align:center;justify-content:center;align-items:center;display:flex}.qb-cell-badge{justify-content:center;align-self:center;align-items:center;min-height:0;display:flex}.qb-table-inner .qb-cell-badge .badge{box-sizing:border-box;flex-shrink:0;justify-content:center;align-items:center;height:24px;padding:0 9px;line-height:1;display:inline-flex}.qb-table-inner .data-table-row>*{min-width:0}.qb-table-inner .data-table-row .qb-actions,.qb-table-inner .data-table-row .qb-qno,.qb-table-inner .data-table-header span:last-child{min-width:auto}.rec-detail-overlay{z-index:250;background:#0f172a3d;justify-content:center;align-items:center;padding:48px 24px;display:flex;position:fixed;inset:0;overflow:hidden}.rec-detail-panel{background:var(--surface-solid);border-radius:var(--radius-lg);border:1px solid var(--border);flex-direction:column;width:100%;max-width:800px;max-height:calc(100vh - 96px);display:flex;overflow:hidden;box-shadow:0 16px 48px #0f172a1a}.rec-detail-header{border-bottom:1px solid var(--border);background:#ffffffb8;flex-shrink:0;justify-content:space-between;align-items:flex-start;gap:16px;padding:18px 22px;display:flex}.rec-detail-header-title{color:var(--fg);font-size:16px;font-weight:700;line-height:1.35}.rec-detail-header-sub{color:var(--muted);margin-top:4px;font-size:12.5px;line-height:1.4}.rec-detail-close{flex-shrink:0}.rec-detail-body{-webkit-overflow-scrolling:touch;flex:1;min-height:0;padding:18px 22px 22px;overflow:hidden auto}.rec-detail-section{margin-bottom:18px}.rec-detail-section:last-child{margin-bottom:0}.rec-detail-section-title{letter-spacing:.04em;color:var(--muted);text-transform:uppercase;margin-bottom:10px;font-size:11.5px;font-weight:600}.rec-detail-info{color:var(--fg2);border-radius:var(--radius);border:1px solid var(--border);background:#f8fafcd9;padding:12px 14px;font-size:13px;line-height:1.65}.rec-detail-info-row+.rec-detail-info-row{margin-top:6px}.rec-detail-info-label{color:var(--muted);margin-right:6px}.rec-detail-stats{grid-template-columns:repeat(2,1fr);gap:10px;display:grid}.rec-detail-stat{text-align:center;border-radius:var(--radius);border:1px solid var(--border);background:#f8fafcd9;padding:14px 12px}.rec-detail-stat-value{color:var(--fg);font-variant-numeric:tabular-nums;font-size:20px;font-weight:700}.rec-detail-stat-label{color:var(--muted);margin-top:4px;font-size:11.5px}.rec-detail-answer-card{border-radius:var(--radius);border:1px solid var(--border);margin-bottom:10px;padding:14px 16px}.rec-detail-answer-card:last-child{margin-bottom:0}.rec-detail-answer-card.is-correct{background:#0596690a;border-color:#05966938}.rec-detail-answer-card.is-wrong{background:#dc26260a;border-color:#dc262638}.rec-detail-answer-card.is-pending{background:#d977060d;border-color:#d9770647}.rec-detail-answer-head{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px;margin-bottom:10px;display:flex}.rec-detail-answer-meta{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.rec-detail-answer-stem{color:var(--fg2);margin-bottom:10px;font-size:12.5px;line-height:1.55}.rec-detail-answer-label{color:var(--muted);margin-bottom:6px;font-size:11.5px}.rec-detail-answer-readonly{color:var(--fg);border:1px solid var(--border);word-break:break-word;cursor:default;-webkit-user-select:text;user-select:text;background:#f1f5f9e6;border-radius:8px;padding:10px 12px;font-size:13px;line-height:1.55}.rec-detail-loading,.rec-detail-error{text-align:center;color:var(--muted);padding:32px 16px;font-size:13px}.rec-detail-error{color:var(--danger);justify-content:center;align-items:center;gap:6px;display:flex}.rec-detail-answers-hint{color:var(--muted);padding:10px 0 4px;font-size:12.5px}.rec-detail-answers-error{border-radius:var(--radius);color:var(--danger);background:#dc26260a;border:1px solid #dc262633;flex-direction:column;align-items:flex-start;gap:10px;padding:14px;font-size:13px;display:flex}.rec-detail-skeleton{flex-direction:column;gap:10px;display:flex}.rec-detail-skeleton-line{border-radius:var(--radius);border:1px solid var(--border);background:linear-gradient(90deg,#f1f5f9f2 0%,#e2e8f0f2 50%,#f1f5f9f2 100%) 0 0/200% 100%;height:76px;animation:1.15s ease-in-out infinite rec-detail-shimmer}@keyframes rec-detail-shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.rec-detail-grade{border-top:1px dashed var(--border);margin-top:12px;padding-top:12px}.rec-detail-grade-title{color:var(--muted);margin-bottom:8px;font-size:11.5px;font-weight:600}.rec-detail-grade-row{flex-wrap:wrap;align-items:center;gap:8px 12px;display:flex}.rec-detail-grade-verdict{gap:6px;display:flex}.rec-detail-grade-verdict label{cursor:pointer;border:1px solid var(--border);background:#ffffff8c;border-radius:8px;align-items:center;gap:4px;padding:6px 10px;font-size:12.5px;display:inline-flex}.rec-detail-grade-verdict input{margin:0}.rec-detail-grade-marks{color:var(--muted);align-items:center;gap:6px;font-size:12.5px;display:flex}.rec-detail-grade-marks input{border:1px solid var(--border);font-variant-numeric:tabular-nums;background:#ffffffb3;border-radius:8px;width:64px;padding:6px 8px;font-size:13px}.rec-detail-grade-marks input:disabled{opacity:.55;cursor:not-allowed}.rec-detail-grade-error{color:var(--danger);margin-top:8px;font-size:12px}@media (width<=640px){.rec-detail-overlay{padding:24px 12px}.rec-detail-panel{width:calc(100% - 24px);max-width:none;max-height:calc(100vh - 48px)}.rec-detail-header,.rec-detail-body{padding-left:16px;padding-right:16px}}.qb-detail-overlay{z-index:250;background:#0f172a3d;justify-content:center;align-items:center;padding:48px 24px;display:flex;position:fixed;inset:0;overflow:hidden}.qb-detail-panel{background:var(--surface-solid);border-radius:var(--radius-lg);border:1px solid var(--border);flex-direction:column;width:100%;max-width:800px;max-height:calc(100vh - 96px);display:flex;overflow:hidden;box-shadow:0 16px 48px #0f172a1a}.qb-detail-header{border-bottom:1px solid var(--border);background:#ffffffb8;flex-shrink:0;justify-content:space-between;align-items:flex-start;gap:16px;padding:18px 22px;display:flex}.qb-detail-header-title{color:var(--fg);margin-top:6px;font-size:15px;font-weight:700;line-height:1.35}.qb-detail-close{flex-shrink:0}.qb-detail-body{-webkit-overflow-scrolling:touch;flex:1;min-height:0;padding:18px 22px 22px;overflow:hidden auto}@media (width<=640px){.qb-detail-overlay{padding:24px 12px}.qb-detail-panel{width:calc(100% - 24px);max-width:none;max-height:calc(100vh - 48px)}.qb-detail-header,.qb-detail-body{padding-left:16px;padding-right:16px}}