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16px;color:var(--muted)}.nd-empty-state p{margin:0 0 16px;font-size:.95rem}.nd-empty-btn{height:40px;padding:0 20px;border:none;border-radius:12px;background:#eff6ff;color:var(--accent);font-size:.92rem;font-weight:600;cursor:pointer;transition:background-color .15s ease}.nd-empty-btn:hover{background:#dbeafe}.nd-empty{text-align:center;font-size:.9rem;color:var(--muted);padding:24px 0}.nd-primary-btn{width:100%;height:52px;padding:0 16px;background:var(--accent);color:#fff;border:none;border-radius:16px;font-size:1rem;font-weight:700;cursor:pointer;transition:background .15s ease}.nd-primary-btn:hover:not(:disabled){background:var(--accent-strong, #1d4ed8)}.nd-primary-btn:disabled{background:#c7d2fe;cursor:not-allowed}.nd-sticky-btn{position:fixed;left:50%;bottom:88px;transform:translate(-50%);width:calc(100% - 32px);max-width:688px;z-index:20;box-shadow:0 8px 24px #0f172a29}.nd-primary-btn .nd-btn-content{display:inline-flex;align-items:center;justify-content:center;gap:8px}.nd-btn-spinner{display:inline-block;width:16px;height:16px;border:2px solid rgba(255,255,255,.35);border-top-color:#fff;border-radius:50%;animation:nd-spin .8s linear infinite;flex-shrink:0}@keyframes nd-spin{to{transform:rotate(360deg)}}.nd-field-label{font-size:1rem;font-weight:700;color:var(--ink);margin:4px 2px 0}.nd-req{color:#ef4444}.nd-dashed-btn{display:flex;align-items:center;justify-content:center;gap:6px;width:100%;height:56px;padding:0 16px;background:var(--card);border:none;border-radius:16px;color:var(--ink-soft);font-size:.95rem;font-weight:600;cursor:pointer;transition:background-color .15s ease,color .15s ease}.nd-dashed-btn:hover{background:#f8fafc;color:var(--accent)}.nd-dashed-icon{font-size:1.15rem;font-weight:500;line-height:1}.nd-dashed-required{background:#fef2f2;color:#dc2626}.nd-dashed-required:hover{background:#fee2e2;color:#dc2626}.nd-dashed-sm{height:48px;font-size:.9rem}.nd-helper{font-size:.8rem;color:var(--muted);margin:0;text-align:center}.nd-source-list{display:flex;flex-direction:column;gap:10px}.nd-source-card{background:var(--card);border:none;border-radius:16px;padding:14px 18px;box-shadow:0 1px 2px #0f172a0a}.nd-source-head{display:flex;align-items:flex-start;justify-content:space-between;gap:8px;min-width:0;margin-bottom:6px}.nd-source-remove{display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;width:40px;height:40px;padding:0;margin-left:auto;background:transparent;border:none;border-radius:12px;color:#94a3b8;font-size:.95rem;line-height:1;cursor:pointer;transition:background-color .15s ease,color .15s ease}.nd-source-remove:hover{background:#fef2f2;color:#dc2626}.nd-source-head .nd-source-remove{margin:-6px -10px -8px auto}.nd-source-title{font-size:1rem;font-weight:700;color:var(--ink);display:block}.nd-resource-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:6px}.nd-resource-item{display:flex;align-items:center;gap:8px;min-height:44px;padding:2px 4px 2px 14px;background:var(--card);border-radius:12px;font-size:.84rem;color:var(--ink-soft)}.nd-resource-item>span{min-width:0;overflow-wrap:anywhere}.nd-select-list{display:flex;flex-direction:column;gap:10px;padding-bottom:80px}.sel-note-card{background:var(--card);border:none;border-radius:20px;padding:16px 18px;box-shadow:0 1px 2px #0f172a0a;text-align:left;cursor:pointer;transition:box-shadow .15s ease,background-color .15s ease}.sel-note-card:hover{box-shadow:0 8px 24px #0f172a1a}.sel-note-card.selected,.sel-note-card.selected:hover{background:#eff6ff;box-shadow:inset 0 0 0 2px var(--accent)}.sel-note-head{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:10px}.sel-note-title-row{display:flex;align-items:center;gap:6px;margin-bottom:4px}.sel-note-star{color:#cbd5e1;font-size:1.1rem;line-height:1}.sel-note-star.starred{color:#f59e0b}.sel-note-title{font-size:1rem;font-weight:700;letter-spacing:-.01em;color:var(--ink)}.sel-note-keywords{font-size:.84rem;color:var(--muted);margin:4px 0 0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.nbd-page{gap:16px;padding-bottom:80px}.note-subject-tag{display:inline-flex;align-items:center;gap:3px;max-width:100%;font-size:.72rem;font-weight:500;padding:2px 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8px;font-size:.72rem;color:var(--muted)}.nbd-title-row{display:flex;align-items:flex-start;gap:8px;margin:0}.nbd-title-star{display:inline-flex;align-items:center;justify-content:center;background:none;border:none;padding:2px;margin:0;line-height:0;color:#cbd5e1;cursor:pointer;flex-shrink:0;transition:color .12s}.nbd-title-star:hover{color:#94a3b8}.nbd-title-star.starred{color:var(--accent)}.nbd-title-star.starred:hover{color:var(--accent-strong, #1d4ed8)}.nbd-title{font-size:1.2rem;font-weight:700;color:var(--ink);line-height:1.35}.nbd-quiz-banner{display:flex;align-items:center;gap:8px;padding:10px 14px;background:#eff6ff;border:1px solid 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#1d4ed8)}@media(max-width:720px){.nbd-fab{right:20px}}.nbd-topic-header{display:flex;align-items:center;justify-content:space-between;gap:8px}.nbd-edit-btn{background:transparent;border:none;color:var(--ink-secondary, #6b7280);cursor:pointer;padding:4px 8px;font-size:.95rem;border-radius:6px;line-height:1}.nbd-edit-btn:hover{background:#2563eb14;color:var(--accent)}.nbd-reset-btn{align-self:flex-end;flex:none;width:26px;height:26px;display:inline-flex;align-items:center;justify-content:center;padding:0;border:1px solid var(--border);border-radius:6px;background:#fff;color:var(--ink-secondary, #6b7280);font-size:.95rem;line-height:1;cursor:pointer}.nbd-reset-btn:hover{border-color:var(--accent);color:var(--accent);background:#2563eb14}.nbd-section--editing{border-left:3px solid var(--accent);padding-left:12px;background:#2563eb08}.nbd-edit-row{display:flex;flex-direction:column;gap:6px;margin:4px 0}.nbd-edit-input,.nbd-edit-textarea{width:100%;padding:8px 10px;border:1px dashed 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var(--border);border-radius:14px;font-size:.95rem;font-weight:600;cursor:pointer}.nbd-secondary-btn:hover{background:#f1f5f9}.nbd-danger-btn{flex:1;padding:13px;background:#ef4444;color:#fff;border:none;border-radius:14px;font-size:.95rem;font-weight:700;cursor:pointer}.nbd-danger-btn:hover:not(:disabled){background:#dc2626}.nbd-danger-btn:disabled{opacity:.6;cursor:not-allowed}.nbd-confirm-row{display:flex;gap:8px;margin-top:8px}.nbd-rename-input{width:100%;padding:12px 14px;border:1px solid var(--border);border-radius:12px;font-size:.95rem;margin:10px 0 4px;box-sizing:border-box}.nbd-rename-input:focus{outline:none;border-color:var(--accent)}.cq-modal{gap:8px}.cq-field{margin-top:14px}.cq-label{display:block;font-size:.82rem;font-weight:600;color:#334155;margin:0 0 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infinite;flex-shrink:0}@keyframes cq-spin{to{transform:rotate(360deg)}}.nbd-translate-overlay{position:fixed;inset:0;background:#0f172a73;display:flex;align-items:center;justify-content:center;z-index:320}.nbd-translate-box{width:calc(100% - 40px);max-width:360px;background:#fff;border-radius:20px;padding:32px 24px;box-shadow:0 20px 50px #0f172a33;text-align:center}.nbd-translate-spinner{width:44px;height:44px;margin:0 auto 18px;border:4px solid #dbeafe;border-top-color:#2563eb;border-radius:50%;animation:cq-spin .9s linear infinite}.nbd-translate-title{font-size:1.05rem;font-weight:700;margin:0 0 6px}.nbd-translate-desc{font-size:.82rem;color:#64748b;margin:0;line-height:1.5}.nbd-hl-mark{border-radius:2px;padding:0 1px}.nbd-overview-pre{white-space:pre-wrap;word-break:break-word}.nbd-page.nbd-hl-mode{padding-bottom:120px}.nbd-page.nbd-hl-mode 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8px;font-size:.68rem;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--muted);word-break:break-all}.sad-translate-overlay{position:fixed;inset:0;background:#0f172a73;display:flex;align-items:center;justify-content:center;z-index:320}.sad-translate-box{width:calc(100% - 40px);max-width:360px;background:#fff;border-radius:20px;padding:32px 24px;box-shadow:0 20px 50px #0f172a33;text-align:center}.sad-translate-spinner{width:44px;height:44px;margin:0 auto 18px;border:4px solid #dbeafe;border-top-color:#2563eb;border-radius:50%;animation:sad-spin .9s linear infinite}@keyframes sad-spin{to{transform:rotate(360deg)}}.sad-translate-title{font-size:1.05rem;font-weight:700;margin:0 0 6px}.sad-translate-desc{font-size:.82rem;color:#64748b;margin:0;line-height:1.5}.app-content:has(>.ql-page){background:#f1f5f9}.ql-page{padding-bottom:40px}.ql-subtitle{text-align:center;font-size:.92rem;font-weight:600;color:var(--muted);margin:4px 0 14px}.ql-empty-page{display:flex;align-items:center;justify-content:center;min-height:60vh}.ql-empty{display:flex;flex-direction:column;align-items:center;text-align:center;padding:32px 24px;max-width:320px}.ql-empty-icon{width:96px;height:96px;background:var(--card);border-radius:24px;display:flex;align-items:center;justify-content:center;font-size:2.4rem;margin-bottom:22px;opacity:.55}.ql-empty-title{font-size:1.1rem;font-weight:700;color:var(--ink);margin:0 0 8px}.ql-empty-desc{font-size:.88rem;color:var(--muted);line-height:1.55;margin:0 0 22px}.ql-empty-cta{height:52px;padding:0 32px;background:var(--accent);color:#fff;border:none;border-radius:16px;font-size:1rem;font-weight:700;cursor:pointer;transition:background-color .15s ease}.ql-empty-cta:hover{background:var(--accent-strong)}.ql-card-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:12px}.ql-card{display:flex;align-items:center;gap:14px;width:100%;padding:16px 18px;background:var(--card);border:none;border-radius:20px;box-shadow:0 1px 2px #0f172a0a;cursor:pointer;text-align:left;transition:box-shadow .2s ease}.ql-card:hover{box-shadow:0 8px 24px #0f172a1a}.ql-score{flex-shrink:0;width:58px;height:58px;border-radius:14px;background:#eff6ff;display:flex;align-items:center;justify-content:center;font-weight:700;color:var(--accent)}.ql-score-num{font-size:.92rem;letter-spacing:-.02em}.ql-score-unanswered{background:#f1f5f9;color:var(--muted)}.ql-score-partial{background:#fef3c7;color:#b45309}.ql-card-body{flex:1;min-width:0}.ql-card-title{font-size:1.02rem;font-weight:700;letter-spacing:-.01em;color:var(--ink);margin:0 0 4px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.ql-card-meta{font-size:.84rem;color:var(--muted);margin:0}.ql-card-date{flex-shrink:0;font-size:.78rem;font-variant-numeric:tabular-nums;color:var(--muted);align-self:flex-start;padding-top:2px}.paywall-overlay{position:fixed;inset:0;background:#0f172a73;display:flex;align-items:flex-end;justify-content:center;z-index:1000;padding:16px}.paywall-sheet{width:100%;max-width:400px;background:var(--card);border-radius:20px;padding:24px 20px 20px;box-shadow:var(--shadow);animation:paywall-rise .22s ease}@keyframes paywall-rise{0%{transform:translateY(16px);opacity:0}to{transform:translateY(0);opacity:1}}.paywall-badge{display:inline-block;font-size:11px;font-weight:600;color:var(--accent-strong);background:var(--accent-soft);padding:4px 10px;border-radius:999px;margin-bottom:12px}.paywall-title{font-size:18px;font-weight:700;color:var(--ink);margin:0 0 8px;line-height:1.35}.paywall-desc{font-size:13px;color:var(--muted);line-height:1.5;margin:0 0 16px}.paywall-reset{display:flex;align-items:center;justify-content:space-between;background:#0f172a0a;border-radius:12px;padding:12px 14px;margin-bottom:20px}.paywall-reset-label{font-size:13px;color:var(--muted)}.paywall-reset-value{font-size:13px;font-weight:600;color:var(--ink)}.paywall-primary{width:100%;border:none;background:var(--accent);color:#fff;font-size:15px;font-weight:600;padding:14px;border-radius:12px;cursor:pointer;margin-bottom:8px}.paywall-primary:hover{background:var(--accent-strong)}.paywall-ghost{width:100%;border:none;background:transparent;color:var(--muted);font-size:14px;font-weight:500;padding:10px;cursor:pointer}.toast-wrap{position:fixed;left:50%;bottom:96px;transform:translate(-50%);z-index:1200;width:max-content;max-width:calc(100% - 48px);pointer-events:none}.toast-body{background:#0f172aeb;color:#fff;font-size:13px;font-weight:500;line-height:1.4;padding:11px 16px;border-radius:12px;box-shadow:var(--shadow);text-align:center;animation:toast-rise .2s ease}@keyframes toast-rise{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}