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#8ba1c8}.nb-card-open{display:block;text-align:left;background:transparent;padding:20px;width:100%;height:100%;color:inherit}.nb-card-top,.nb-question-tags{display:flex;align-items:center;gap:7px;flex-wrap:wrap;margin-bottom:17px}.nb-badge{display:inline-block;font-size:10px;font-weight:500;color:#7086af;background:#ecf1f9;border-radius:5px;padding:3px 8px;line-height:1.6;max-width:100%;overflow-wrap:anywhere}.nb-badge-quiet{color:#9aa7ba;background:#f1f4f8}.nb-badge-green{color:#78a292;background:#edf5f0}.nb-badge-warn{color:#b29a70;background:#f8f2e7}.nb-card-content{min-height:130px}.nb-card-image{height:112px;max-width:100%;object-fit:contain;object-position:left center;margin-bottom:14px}.nb-card-question{font-size:15px;line-height:1.9;color:#647693;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;overflow-wrap:anywhere}.nb-card-question .katex{font-size:1.05em}.nb-card-bottom{border-top:1px solid #edf1f7;display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:20px;padding-top:13px;font-size:10px;color:#a6b2c5}.nb-card-bottom>span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.nb-card-bottom time{white-space:nowrap}.nb-pick{position:absolute;right:15px;top:16px;width:25px;height:25px;border:1px solid #d5dfef;background:#fff;border-radius:50%;color:#fff;font-size:13px;display:flex;align-items:center;justify-content:center}.is-picked .nb-pick{background:#7c94bd;border-color:#7c94bd}.nb-question-card:has(.nb-pick) .nb-card-top{padding-right:32px}.nb-empty{grid-column:1/-1;text-align:center;padding:70px 25px 78px}.nb-empty-drawing{display:block;font-size:60px;line-height:1.4;color:#b1bfd6;transform:rotate(-6deg)}.nb-empty h2{font:500 24px/1.7 var(--serif,serif);margin:13px 0 9px}.nb-empty p{font-size:13px;color:#97a4b9;margin:0 auto 24px;max-width:400px;line-height:1.9}.nb-state{max-width:650px;margin:80px auto;padding:40px 22px;text-align:center;color:#95a4bb;font-size:15px}.nb-state-symbol{display:inline-flex;width:56px;height:56px;background:#e5ecf7;color:#8aa0c5;border-radius:50%;align-items:center;justify-content:center;font-size:26px;margin-bottom:15px}.nb-state h2{font-family:var(--serif,serif);font-size:26px;color:#667d9f;margin:12px 0}.nb-state p{font-size:14px;line-height:1.9;margin-bottom:25px;overflow-wrap:anywhere}.nb-state-error .nb-state-symbol{color:#b58f86;background:#f2eae5}.nb-removed .nb-button{display:flex;width:max-content;margin:13px auto}.nb-detail-layout{display:grid;grid-template-columns:minmax(0,1fr) 276px;gap:24px;align-items:start}.nb-detail-main{min-width:0}.nb-panel{border:1px solid #e0e7f1;background:#ffffffd9;border-radius:14px;padding:26px;margin-bottom:20px;box-shadow:0 6px 24px #647d9e06;overflow-wrap:anywhere}.nb-panel-title{font-size:17px;font-weight:600;letter-spacing:.5px;margin:0 0 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23px}.nb-field{display:block;margin:17px 0}.nb-field-label{display:block;font-size:12px;color:#8b9db9;margin-bottom:7px}.nb-field small{font-size:10px;color:#a0b0c6}.nb-field textarea{min-height:100px}.nb-form-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:24px}.nb-followup{margin-top:25px;background:linear-gradient(130deg,#f8faff,#fff)}.nb-followup-copy{font-size:12px;color:#a1afc4;margin:-10px 0 23px}.nb-qa{margin:20px 0;padding-bottom:21px;border-bottom:1px solid #e8eef7}.nb-qa-question{font-size:12px;color:#879dc0;background:#eef3fb;padding:12px 16px;border-radius:8px;margin-bottom:16px}.nb-qa-answer{font-size:15px;line-height:2;color:#5d7597;white-space:pre-line}.nb-qa>.nb-link{margin-top:12px;font-size:11px}.nb-ask-form textarea{font-size:14px;background:#fff}.nb-ask-actions{display:flex;justify-content:flex-end;gap:10px;margin:12px 0}.nb-ask-status{display:block;font-size:10px;color:#a4b1c5;line-height:1.8;min-height:18px}.nb-button.is-recording{color:#b97889;background:#f6eaf0;border-color:#e5c9d3}.nb-image-dialog{position:fixed;width:min(1200px,94vw);height:min(850px,91vh);padding:20px;border:1px solid #dce4f0;background:#f5f7fc;border-radius:13px;box-shadow:0 15px 70px #20345240;z-index:200;color:#617a9f}.nb-image-dialog::backdrop{background:#20314b99;backdrop-filter:blur(5px)}.nb-image-dialog img{max-width:100%;height:calc(100% - 60px);object-fit:contain;margin:15px auto 0}.nb-image-close{margin-left:auto;display:flex;min-height:36px;font-size:12px!important}.notebook-view canvas{max-width:100%;height:auto}.notebook-view .katex-display{overflow-x:auto;overflow-y:hidden;padding:7px 0;max-width:100%}.notebook-view .katex-error{white-space:pre-wrap;overflow-wrap:anywhere}
@keyframes nb-spin{to{transform:rotate(360deg)}}
@media(min-width:1600px){.nb-detail-layout{grid-template-columns:minmax(0,1fr) 300px}.nb-panel{padding:30px}.nb-original-question{padding:33px}.nb-question-text{font-size:20px}.nb-card-question{font-size:16px}.nb-summary-panel{padding:27px}.nb-mastery strong{font-size:42px}}
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@media(max-width:860px){.nb-detail-layout{grid-template-columns:1fr}.nb-detail-aside{order:-1}.nb-summary-panel{position:static;display:grid;grid-template-columns:1fr 1fr;gap:9px 22px;margin-bottom:0}.nb-summary-panel>.nb-kicker,.nb-summary-panel>h2,.nb-summary-panel>.nb-mastery-track,.nb-summary-panel>.nb-summary-reason,.nb-summary-panel>.nb-history-counts,.nb-summary-panel>.nb-item-meta{display:none}.nb-summary-panel>.nb-mastery{grid-row:1/3;align-self:center;margin:0}.nb-summary-panel>.nb-button{margin:0;padding:7px 11px;min-height:36px;font-size:11px!important}.nb-summary-panel>.nb-danger{grid-column:1/-1;justify-self:end;margin:3px 0 0}.nb-personal-note{display:none}.nb-heading{align-items:flex-start}.nb-list-stats{padding:23px}.nb-list-stats>div{padding:0 10px;gap:9px;flex-wrap:wrap}.nb-list-stats strong{font-size:27px}.nb-list-stats span{font-size:10px}.nb-question-grid{grid-template-columns:1fr}.nb-card-content{min-height:auto}.nb-card-image{max-height:130px;height:auto}.nb-card-question{-webkit-line-clamp:3}.nb-heading-actions{justify-content:flex-end;max-width:160px}.nb-heading-actions>.nb-button{font-size:11px!important;min-height:36px;padding:8px 12px}}
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