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3;background:var(--surface-sunken);display:flex;align-items:center;justify-content:center;position:relative;border-bottom:1px solid var(--card-border)}.book-card-cover-initial{font-family:STKaiti,Songti SC,"Source Han Serif SC",serif;font-size:56px;font-weight:500;color:var(--text-secondary);-webkit-user-select:none;-moz-user-select:none;user-select:none;letter-spacing:-.02em}.book-card-cover-chapters{position:absolute;top:10px;right:12px;font-size:11px;font-weight:500;color:var(--text-muted);background:var(--surface-raised);padding:2px 8px;border-radius:var(--radius-sm);border:1px solid var(--card-border)}.book-card-progress-bar{position:absolute;bottom:0;left:0;right:0;height:2px;background:var(--accent)}.book-card-info-section{padding:12px 14px;background:var(--surface-raised)}.book-card-title-text{color:var(--text-primary);font-weight:500;font-size:var(--fs-base);line-height:1.35;letter-spacing:-.005em}.book-card-date-text{color:var(--text-muted);font-size:var(--fs-xs)}.book-card-progress-text{color:var(--text-secondary);font-size:var(--fs-xs);font-weight:500}.book-card-edit-input{width:100%;font-size:var(--fs-base);font-weight:500;color:var(--text-primary);background:var(--surface-sunken);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:6px 10px;outline:none;transition:border-color .15s,box-shadow .15s;font-family:var(--font-ui-system)}.book-card-edit-input:focus{border-color:var(--accent);box-shadow:0 0 0 2px var(--surface-active);background:var(--surface-raised)}.book-card-action-btn{display:flex;align-items:center;justify-content:center;width:26px;height:26px;border-radius:var(--radius-sm);background:var(--surface-raised);border:1px solid var(--card-border);color:var(--text-muted);transition:background var(--ebook-transition),color var(--ebook-transition),border-color var(--ebook-transition)}.book-card-action-btn:hover{background:var(--surface-hover);color:var(--text-primary)}.book-card-action-btn-danger:hover{background:var(--error-bg);color:var(--error-text);border-color:var(--error-border)}.theme-selector-row{display:flex;gap:8px}.theme-selector-btn{flex:1;padding:8px 6px;border-radius:10px;border:2px solid var(--border-light);display:flex;flex-direction:column;align-items:center;gap:6px;cursor:pointer;transition:border-color .2s,background .2s;background:transparent}.theme-selector-btn:hover{border-color:var(--border-color);background:var(--accent-light)}.theme-selector-btn.active{border-color:var(--accent);background:var(--accent-light)}.theme-preview{width:100%;height:28px;border-radius:6px;border:1px solid rgba(0,0,0,.08);position:relative;overflow:hidden}.theme-preview-light{background:linear-gradient(135deg,#fbfbfb 50%,#e6e6e6 50%)}.theme-preview-dark{background:linear-gradient(135deg,#191919 50%,#2f2f2f 50%);border-color:#ffffff0f}.theme-selector-label{font-size:.6875rem;font-weight:500;color:var(--text-muted);font-family:var(--font-ui)}.theme-selector-btn.active .theme-selector-label{color:var(--accent);font-weight:600}.font-size-steps{display:flex;align-items:flex-end;justify-content:center;gap:5px;height:24px;margin:6px 0 4px}.font-size-step-bar{width:7px;border-radius:3px 3px 0 0;background:var(--border-color);cursor:pointer;transition:background .15s,opacity 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.lib-error-banner{color:#ff8a80;background:#2a1515;border-color:#5a2020}.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg-page);padding:24px}.auth-form-container{width:100%;max-width:360px;animation:authFadeIn .3s ease-out}.auth-form-card{background:var(--surface-raised);border-radius:var(--radius-lg);border:1px solid var(--card-border);box-shadow:var(--shadow-xs);padding:32px 28px}@media (min-width: 480px){.auth-form-card{padding:40px 36px}}.auth-brand{display:flex;flex-direction:column;align-items:center;margin-bottom:24px}.auth-brand-mark{width:40px;height:40px;border-radius:var(--radius-md);background:var(--accent);color:var(--surface-raised);display:flex;align-items:center;justify-content:center;margin-bottom:12px}[data-reader-theme=dark] .auth-brand-mark{color:var(--bg-page)}.auth-brand-name{font-size:var(--fs-lg);font-weight:600;color:var(--text-primary);letter-spacing:-.01em}.auth-form-heading{font-size:var(--fs-xl);font-weight:600;color:var(--text-primary);letter-spacing:-.02em;margin-bottom:4px;text-align:center}.auth-form-subtitle{font-size:var(--fs-sm);color:var(--text-muted);margin-bottom:24px;text-align:center}.auth-input{width:100%;padding:9px 12px;height:40px;border:1px solid var(--card-border);border-radius:var(--radius-md);font-size:var(--fs-base);background:var(--surface-sunken);transition:border-color .15s ease-out,background .15s ease-out;outline:none;color:var(--text-primary);font-family:var(--font-ui-system)}.auth-input::-moz-placeholder{color:var(--text-muted)}.auth-input::placeholder{color:var(--text-muted)}.auth-input:focus{border-color:var(--border-strong);background:var(--surface-raised)}.auth-submit-btn{width:100%;padding:9px 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authFadeIn{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}.nav-tab{height:32px;display:inline-flex;align-items:center;padding:0 10px;border-radius:var(--radius-md);font-size:var(--fs-sm);font-weight:500;transition:background var(--ebook-transition),color var(--ebook-transition);text-decoration:none}.nav-tab-inactive{color:var(--text-secondary)}.nav-tab-inactive:hover{color:var(--text-primary);background:var(--surface-hover)}.nav-tab-active{background:var(--surface-active);color:var(--text-primary)}.app-shell{background:var(--bg-page);color:var(--text-primary);font-family:var(--font-ui-system)}body.reader-active .app-shell{background:var(--bg-primary)}.header-nav,.header-nav-ebook{background:var(--surface-raised);border-bottom:1px solid var(--card-border);box-shadow:none}.ebook-logo{text-decoration:none;cursor:pointer;transition:opacity 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var(--ebook-transition);cursor:pointer}.ebook-btn-ghost:hover{color:var(--text-primary);background:var(--surface-hover)}.ebook-header-divider{width:1px;height:16px;background:var(--card-border);margin:0 4px}.ebook-avatar{width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0;background:var(--surface-active);border:none}.ebook-avatar span{font-size:var(--fs-xs);font-weight:600;color:var(--text-primary);font-family:var(--font-ui-system)}.ebook-username{font-size:.8125rem;color:#666}.ebook-admin-badge{padding:1px 6px;border-radius:var(--radius-sm);font-size:var(--fs-xs);font-weight:500;letter-spacing:0;background:var(--surface-active);color:var(--text-secondary);border:1px solid var(--card-border)}.ebook-username{font-size:var(--fs-sm);color:var(--text-secondary);font-weight:500}.lib-heading-wrap{position:relative}.lib-heading-wrap:after{display:none}@keyframes 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var(--card-border);border-radius:var(--radius-lg);box-shadow:none;transition:border-color .15s,background .15s}.upload-zone-idle:hover{border-color:var(--border-strong);background:var(--surface-hover)}.upload-zone-dragging{border-color:var(--accent);background:var(--surface-hover);border-style:solid}.upload-zone-icon{color:var(--text-muted)}.upload-zone-text{color:var(--text-primary);font-size:var(--fs-base);font-weight:500}.upload-zone-hint{color:var(--text-muted);font-size:var(--fs-sm)}.upload-zone-progress-track{width:100%;height:4px;border-radius:2px;background:var(--surface-active);overflow:hidden}.upload-zone-progress-fill{height:100%;border-radius:2px;background:var(--accent);transition:width .3s ease}.upload-zone-error{padding:10px 14px;border-radius:var(--radius-md);font-size:var(--fs-sm);color:var(--error-text);background:var(--error-bg);border:1px solid var(--error-border)}.upload-zone-success{padding:10px 14px;border-radius:var(--radius-md);font-size:var(--fs-sm);color:var(--success-text);background:var(--success-bg);border:1px solid var(--success-border)}.upload-docs-card{background:var(--surface-raised);border:1px solid var(--card-border);border-radius:var(--radius-lg);padding:24px;box-shadow:none}.upload-docs-title{color:var(--text-primary);font-size:.875rem;font-weight:700;margin-bottom:.75rem}.upload-code-block{background:#141414;color:#e8e8e8;border-radius:10px;padding:1rem 1.25rem;font-size:.8125rem;line-height:1.7;font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;overflow-x:auto;border:1px solid #2a2a2a}.upload-hint-list{margin-top:12px;display:flex;flex-direction:column;gap:6px}.upload-hint-item{display:flex;align-items:flex-start;gap:8px;font-size:var(--fs-sm);color:var(--text-secondary)}.upload-hint-dot{color:var(--text-muted);margin-top:6px;flex-shrink:0}.note-card-inner{background:var(--surface-raised);border:1px solid var(--card-border);border-radius:var(--radius-lg);box-shadow:none;transition:border-color .15s ease-out,background .15s ease-out}.note-card-inner:hover{border-color:var(--border-strong);background:var(--surface-hover)}body{overscroll-behavior-x:none}.reading-content pre,.reading-content table{overscroll-behavior-x:contain;-webkit-overflow-scrolling:auto}@media (hover: none){.note-card-inner:hover{transform:none;box-shadow:0 1px 3px #0000000f,0 1px 2px -1px #0000000a}.note-card-inner:active{background:#f8f8f8;transform:scale(.99)}}@media (max-width: 640px){.ebook-btn-primary{min-height:44px;min-width:44px}select{min-height:44px}}.density-chip{padding:8px 6px;border-radius:8px;border:1px solid var(--border-color);background:var(--bg-page);color:var(--text-secondary);cursor:pointer;transition:all .15s ease-out;text-align:center;font-size:12px}.density-chip:hover{border-color:var(--accent);color:var(--text-primary)}.density-chip.active{border-color:var(--accent);background:var(--accent-light);color:var(--accent);box-shadow:0 0 0 1px var(--accent) inset}.paged-columns .reading-content{padding-left:0;padding-right:0}.wikilink{color:var(--accent);text-decoration:none;border-bottom:1px dashed var(--accent);padding:0 2px;border-radius:2px;cursor:pointer;transition:background .15s ease-out}.wikilink:hover{background:var(--accent-light);border-bottom-style:solid}.wikilink-broken{color:#dc2626;background:#dc262614;padding:0 4px;border-radius:3px;font-style:italic;cursor:help}[data-reader-theme=dark] .wikilink-broken{color:#f87171;background:#f8717124}.wikilink-preview{position:absolute;z-index:200;width:320px;padding:12px 14px;background:var(--bg-page);border:1px solid var(--border-color);border-radius:10px;box-shadow:0 12px 28px -8px #00000038,0 0 0 1px 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var(--card-border);background:var(--surface-raised);position:fixed;top:52px;left:0;bottom:0;overflow:hidden;display:flex;flex-direction:column;touch-action:pan-y;overscroll-behavior:contain;z-index:40;color:var(--text-primary);box-shadow:none}.notes-sidebar-inner{display:flex;flex-direction:column;height:100%;overflow:hidden}.notes-sidebar-header{display:flex;align-items:center;justify-content:space-between;padding:16px 16px 10px;flex-shrink:0}.notes-sidebar-title{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted)}.notes-sidebar-add-btn{display:flex;align-items:center;justify-content:center;width:24px;height:24px;border-radius:var(--radius-sm);color:var(--text-muted);transition:background var(--ebook-transition),color var(--ebook-transition)}.notes-sidebar-add-btn:hover{background:var(--surface-hover);color:var(--text-primary)}.notes-sidebar-nav{flex:1;overflow-y:auto;padding:4px 8px 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640px){.sm\:mb-4{margin-bottom:1rem}.sm\:ml-6{margin-left:1.5rem}.sm\:mt-2{margin-top:.5rem}.sm\:block{display:block}.sm\:inline-block{display:inline-block}.sm\:inline{display:inline}.sm\:flex{display:flex}.sm\:inline-flex{display:inline-flex}.sm\:hidden{display:none}.sm\:h-12{height:3rem}.sm\:h-\[18px\]{height:18px}.sm\:min-h-0{min-height:0px}.sm\:w-12{width:3rem}.sm\:w-20{width:5rem}.sm\:w-\[18px\]{width:18px}.sm\:min-w-0{min-width:0px}.sm\:grid-cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.sm\:grid-cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}.sm\:gap-1{gap:.25rem}.sm\:gap-1\.5{gap:.375rem}.sm\:gap-4{gap:1rem}.sm\:gap-5{gap:1.25rem}.sm\:p-10{padding:2.5rem}.sm\:p-2{padding:.5rem}.sm\:p-5{padding:1.25rem}.sm\:p-8{padding:2rem}.sm\:px-4{padding-left:1rem;padding-right:1rem}.sm\:px-5{padding-left:1.25rem;padding-right:1.25rem}.sm\:px-6{padding-left:1.5rem;padding-right:1.5rem}.sm\:py-1\.5{padding-top:.375rem;padding-bottom:.375rem}.sm\:py-10{padding-top:2.5rem;padding-bottom:2.5rem}.sm\:py-12{padding-top:3rem;padding-bottom:3rem}.sm\:py-2{padding-top:.5rem;padding-bottom:.5rem}.sm\:py-2\.5{padding-top:.625rem;padding-bottom:.625rem}.sm\:py-3{padding-top:.75rem;padding-bottom:.75rem}.sm\:pt-3{padding-top:.75rem}.sm\:pt-\[14vh\]{padding-top:14vh}.sm\:text-2xl{font-size:1.5rem;line-height:2rem}.sm\:text-base{font-size:1rem;line-height:1.5rem}.sm\:opacity-0{opacity:0}}@media (min-width: 768px){.md\:block{display:block}.md\:inline-block{display:inline-block}.md\:inline{display:inline}.md\:flex{display:flex}.md\:inline-flex{display:inline-flex}.md\:hidden{display:none}}@media (min-width: 1024px){.lg\:block{display:block}.lg\:flex{display:flex}.lg\:hidden{display:none}.lg\:w-72{width:18rem}.lg\:grid-cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}.lg\:gap-5{gap:1.25rem}.lg\:p-12{padding:3rem}.lg\:p-4{padding:1rem}.lg\:px-10{padding-left:2.5rem;padding-right:2.5rem}.lg\:px-8{padding-left:2rem;padding-right:2rem}}@media (min-width: 1280px){.xl\:hidden{display:none}.xl\:w-80{width:20rem}.xl\:grid-cols-5{grid-template-columns:repeat(5,minmax(0,1fr))}}@media (hover:none){.\[\@media\(hover\:none\)\]\:opacity-100{opacity:1}}