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(max-width:720px){.subscription-dialog-backdrop{padding:12px}.subscription-dialog{width:100%;max-height:94vh;padding:23px 14px 18px}.subscription-dialog__header{margin-bottom:18px;padding:0 24px}.subscription-plan-grid{grid-template-columns:1fr}.subscription-plan-card{padding:18px}.subscription-period-control{gap:7px}.subscription-settings-card{align-items:flex-start;gap:var(--space-md)}.subscription-settings-card__action{display:none}.subscription-settings-card__heading{flex-wrap:wrap}.subscription-plan-badge{padding:5px 8px}.header-free-usage{flex-basis:112px;width:112px}}.manage-folders-modal{background:var(--bg-primary);border-radius:var(--radius-lg);width:100%;max-width:800px;min-height:520px;max-height:720px;padding:var(--space-3xl);flex-direction:column;display:flex;overflow:hidden;box-shadow:0 8px 32px 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.folder-manager-drop-indicator.visible{opacity:1}.folder-manager-items{min-height:0;max-height:200px;margin:0;padding:0;list-style:none}.folder-manager-list-scroll .folder-manager-items .folder-manager-items{margin-left:var(--space-xl)}.folder-manager-items li{margin:0}.folder-manager-item{width:100%;min-height:44px;padding:var(--space-md);font-size:var(--text-base);color:var(--text-primary);cursor:pointer;text-align:left;border-radius:var(--radius-sm);transition:var(--transition);background:0 0;border:none;align-items:center;display:flex}.folder-manager-item:hover{background:var(--bg-secondary)}.folder-manager-item.active{background:var(--bg-tertiary)}.folder-manager-item.nested{margin-left:var(--space-xl);font-size:var(--text-sm)}.folder-manager-item.dragging{opacity:.5}.folder-manager-item.drag-over{outline:2px solid var(--accent-primary);outline-offset:-2px}.folder-manager-edit{background:var(--bg-secondary);border-radius:var(--radius-md);padding:var(--space-2xl);border:1px solid var(--border-subtle);overflow:auto}.folder-preview{flex-direction:column;min-height:100%;display:flex}.folder-preview[hidden]{display:none}.folder-preview__heading{align-items:center;gap:var(--space-md);padding-bottom:var(--space-xl);border-bottom:1px solid var(--border-subtle);display:flex}.folder-preview__icon{width:46px;height:46px;color:var(--accent-primary);background:var(--accent-primary);flex:none;justify-content:center;align-items:center;display:inline-flex}@supports (color:color-mix(in lab, red, red)){.folder-preview__icon{background:color-mix(in srgb, var(--accent-primary) 14%, transparent)}}.folder-preview__icon{border:1px solid var(--accent-primary)}@supports (color:color-mix(in lab, red, red)){.folder-preview__icon{border:1px solid color-mix(in srgb, var(--accent-primary) 30%, transparent)}}.folder-preview__icon{border-radius:var(--radius-md)}.folder-preview__eyebrow{color:var(--text-secondary);font-size:11px;font-weight:var(--weight-semibold);letter-spacing:.08em;text-transform:uppercase;margin-bottom:3px;display:block}.folder-preview__name{color:var(--text-primary);font-size:var(--text-xl);font-weight:var(--weight-semibold);overflow-wrap:anywhere;margin:0}.folder-preview__fields{gap:var(--space-xl);margin:var(--space-xl) 0 0;display:grid}.folder-preview__field{margin:0}.folder-preview__field dt{color:var(--text-secondary);font-size:var(--text-xs);font-weight:var(--weight-semibold);letter-spacing:.04em;text-transform:uppercase;margin-bottom:7px}.folder-preview__field dd{color:var(--text-primary);font-size:var(--text-base);white-space:pre-wrap;overflow-wrap:anywhere;margin:0;line-height:1.6}.folder-preview__field dd.is-empty{color:var(--text-secondary);font-style:italic}.folder-preview__actions{align-items:center;gap:var(--space-md);padding-top:var(--space-2xl);flex-wrap:wrap;margin-top:auto;display:flex}.folder-edit-form .form-actions{justify-content:flex-end}.edit-folder-heading{font-size:var(--text-md);font-weight:var(--weight-semibold);color:var(--text-primary);margin:0 0 var(--space-xl)}.form-group-description{flex:1;min-width:0}.form-textarea-fixed{resize:none;width:100%;min-height:120px}.form-actions{gap:var(--space-md);margin-top:var(--space-2xl);flex-wrap:wrap;align-items:center;display:flex}.btn-danger-outline{height:44px;padding:var(--space-md) var(--space-xl);color:var(--accent-danger);font-size:var(--text-base);font-weight:var(--weight-medium);border-radius:var(--radius-sm);border:1px solid var(--accent-danger);cursor:pointer;transition:var(--transition);white-space:nowrap;background:0 0}.btn-danger-outline:hover{background:var(--accent-danger);color:var(--text-primary)}.muted{font-size:var(--text-sm);color:var(--text-muted);margin:0}.folder-edit-form{display:block}.form-group{margin-bottom:var(--space-xl)}.form-group label{font-size:var(--text-sm);font-weight:var(--weight-medium);color:var(--text-primary);margin-bottom:var(--space-sm);display:block}.form-input,.form-textarea{width:100%;padding:var(--space-md);background:var(--bg-primary);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);font-size:var(--text-base);color:var(--text-primary);font-family:inherit}.form-input{height:44px}.form-input:focus,.form-textarea:focus{border-color:var(--border-focus);outline:none}.settings-color-input{border:1px solid var(--border);border-radius:var(--radius-sm);cursor:pointer;background:var(--bg-primary);width:48px;height:44px;padding:2px}.settings-color-input:hover{border-color:var(--border-focus)}.form-textarea{min-height:120px}.form-textarea.form-textarea-fixed{resize:none}.form-actions{gap:var(--space-md);margin-top:var(--space-2xl);display:flex}.btn-primary{height:44px;padding:var(--space-md) var(--space-xl);background:var(--accent-primary);color:var(--bg-primary);font-size:var(--text-base);font-weight:var(--weight-medium);border-radius:var(--radius-sm);cursor:pointer;transition:var(--transition);border:none}.btn-primary:hover{background:#e0e0e0}.btn-secondary{height:44px;padding:var(--space-md) var(--space-xl);color:var(--text-primary);font-size:var(--text-base);font-weight:var(--weight-medium);border-radius:var(--radius-sm);border:1px solid var(--border-medium);cursor:pointer;transition:var(--transition);background:0 0}.btn-secondary:hover{background:var(--bg-secondary)}.btn-text{color:var(--text-secondary);font-size:var(--text-sm);cursor:pointer;padding:var(--space-sm) var(--space-md);border-radius:var(--radius-sm);background:0 0;border:none}.btn-text:hover{color:var(--text-primary)}.btn-danger{color:var(--accent-danger)}.btn-danger:hover{color:var(--accent-danger-hover)}[hidden]{display:none!important}.theme-toggle{cursor:pointer;background:0 0;border:none;border-radius:999px;flex-shrink:0;align-items:center;width:52px;height:28px;padding:0;display:flex;position:relative}.theme-toggle-track{border-radius:999px;width:100%;height:100%;transition:background-color .3s;position:absolute;top:0;left:0}.theme-toggle-thumb{z-index:1;background-color:#fff;border-radius:50%;justify-content:center;align-items:center;width:24px;height:24px;transition:transform .3s cubic-bezier(.175,.885,.32,1.27),background-color .3s;display:flex;position:absolute;top:2px;left:2px;box-shadow:0 1px 3px #0000001a}.theme-icon-sun{color:#5d5d5d;transition:opacity .2s}.theme-icon-moon{color:#fff;opacity:0;transition:opacity .2s;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}body.dark .theme-toggle-track{background-color:#6e56cf}body.dark .theme-toggle-thumb{background-color:#1a1f1f;transform:translate(24px)}body.dark .theme-icon-sun{opacity:0}body.dark .theme-icon-moon{opacity:1}.upload-drop-zone{background:var(--bg-tertiary);width:100%;height:200px}@supports (color:color-mix(in lab, red, red)){.upload-drop-zone{background:color-mix(in srgb, var(--bg-tertiary) 20%, transparent)}}.upload-drop-zone{border:1px dashed var(--border-medium);border-radius:var(--radius-md);text-align:center;color:var(--text-muted);cursor:pointer;transition:var(--transition);margin-bottom:var(--space-lg);flex-direction:column;justify-content:center;align-items:center;display:flex}.upload-drop-zone:hover{border-color:var(--text-secondary);color:var(--text-secondary);background:var(--bg-secondary)}.upload-content{pointer-events:none}.upload-label-main{font-size:var(--text-lg);font-weight:var(--weight-medium);color:var(--text-secondary);margin-bottom:var(--space-xs);display:block}.upload-subtitle{font-size:var(--text-sm);color:var(--text-muted)}.upload-drop-zone.has-file{background:var(--bg-secondary);padding:var(--space-md);cursor:default;border-style:solid;justify-content:flex-start;align-items:stretch}.upload-drop-zone.has-file .upload-content{display:none}.uploaded-file-chip{background:var(--bg-secondary);border:1px solid var(--border-medium);border-radius:var(--radius-sm);padding:var(--space-sm) var(--space-md);color:var(--text-primary);font-size:var(--text-sm);justify-content:space-between;align-items:center;height:auto;min-height:40px;display:flex}.uploaded-file-chip .remove-file-btn{margin-left:var(--space-sm);color:var(--text-muted);opacity:.7;background:0 0;justify-content:center;align-items:center;width:24px;height:24px;padding:0;font-size:20px;display:flex;position:static;transform:none}.uploaded-file-chip .remove-file-btn:hover{opacity:1;color:var(--text-primary);background:0 0}.folder-select-container{position:relative}.folder-select-container .select-chevron{justify-content:center;align-items:center;width:15px;height:15px;font-size:15px;line-height:15px;transition:transform .2s;display:flex;transform:translateY(-50%)rotate(0)}.folder-select-container .custom-select-trigger[aria-expanded=true]~.select-chevron{transform:translateY(-50%)rotate(90deg)}.custom-select-trigger{text-align:left;width:100%}.custom-dropdown-menu{background:var(--bg-secondary);border:1px solid var(--border-medium);border-radius:var(--radius-md);width:100%;box-shadow:var(--shadow-lg);z-index:100;flex-direction:column;max-height:300px;margin-top:4px;display:flex;position:absolute;top:100%;left:0;overflow:hidden auto}.custom-dropdown-menu[hidden]{display:none}.dropdown-list-scroll{min-height:0;max-height:200px;padding:var(--space-xs) 0;overflow:hidden auto}.dropdown-tree{margin:0;padding:0;list-style:none}.dropdown-tree .folder-manager-item{padding:var(--space-xs) var(--space-md);align-items:center;gap:var(--space-sm);cursor:pointer;width:100%;color:var(--text-primary);text-align:left;font-size:var(--text-sm);background:0 0;border:none;transition:background .1s;display:flex}.dropdown-tree .folder-manager-item:hover{background:var(--bg-tertiary)}.dropdown-tree .folder-manager-item.active{background:var(--bg-tertiary);color:var(--accent-primary)}.block-editor-container{width:100%;margin-bottom:var(--space-md);border:1px solid var(--border-medium);border-radius:var(--radius-md);padding:var(--space-sm);background:var(--bg-secondary)}.block-editor-list{gap:var(--space-sm);margin-bottom:var(--space-sm);flex-direction:column;min-height:250px;max-height:250px;display:flex;overflow:visible auto}.editor-block{padding:var(--space-sm);border-radius:var(--radius-sm);border:1px solid #0000;transition:background .2s,border-color .2s;position:relative}.editor-block:hover{background:var(--bg-tertiary);border-color:var(--border-subtle)}.editor-block-input{width:100%;color:var(--text-primary);font-family:var(--font-primary);font-size:var(--text-base);resize:none;background:0 0;border:none;outline:none;min-height:fit-content;display:block;overflow:hidden}.editor-block.header .editor-block-input{font-size:var(--text-2xl);text-align:center;font-weight:700}.editor-block.comment 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12px}.folder-preview-edit-btn{color:#0000;width:34px;padding:0;position:relative;overflow:hidden}.folder-preview-edit-btn:after{content:"✎";color:var(--primary);place-items:center;font-size:15px;display:grid;position:absolute;inset:0}.folder-preview-summary,.folder-preview-editor,.folder-preview-content{padding-left:14px;padding-right:14px}.folder-preview-lesson{align-items:stretch}.folder-preview-remove-lesson{margin:8px 8px 8px 0}}.lesson-card .card-thumb{aspect-ratio:auto;background:radial-gradient(circle at 100% 0%, var(--primary), transparent 52%), linear-gradient(135deg, var(--bg-tertiary), var(--bg-elevated));justify-content:flex-start;align-items:flex-end;height:84px;padding:14px}@supports (color:color-mix(in lab, red, red)){.lesson-card .card-thumb{background:radial-gradient(circle at 100% 0%, color-mix(in srgb, var(--primary) 20%, transparent), transparent 52%), linear-gradient(135deg, var(--bg-tertiary), var(--bg-elevated))}}.card-thumb-copy{min-width:0;padding-right:28px}.card-thumb-title{color:var(--text-primary);font-size:var(--text-base);font-weight:var(--weight-semibold);text-overflow:ellipsis;white-space:nowrap;margin:0;line-height:1.25;overflow:hidden}.card-thumb-path{color:var(--text-muted);font-size:11px;font-weight:var(--weight-medium);letter-spacing:.01em;text-overflow:ellipsis;white-space:nowrap;margin-top:4px;display:block;overflow:hidden}.lesson-card .card-content{gap:10px;padding:14px}.card-badge-row{align-items:center;gap:5px;display:flex}.card-badge-row .card-difficulty{margin-left:auto}.card-word-summary,.card-completion-label{color:var(--text-muted);justify-content:space-between;align-items:baseline;gap:8px;font-size:11px;display:flex}.card-word-summary strong{color:var(--text-primary);font-size:var(--text-sm)}.card-completion-track{border:1px solid var(--border-subtle);border-radius:var(--radius-full);background:var(--bg-tertiary);height:6px;overflow:hidden}.card-completion-fill{border-radius:inherit;background:linear-gradient(90deg, var(--primary), var(--accent-primary));min-width:0;height:100%;transition:width .22s;display:block}.card-completion-label{margin-top:-4px;font-size:10px}.card-completion-label strong{color:var(--text-secondary);font-size:11px}.lesson-card .card-meta{margin-top:0}.back-btn{padding:var(--space-sm) var(--space-md);background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius-sm);cursor:pointer;font-size:var(--text-sm);color:var(--text-primary);transition:background .2s}.back-btn:hover{background:var(--bg-tertiary)}.reader-title{font-size:var(--text-xl);color:var(--text-primary);font-weight:700}.loading-state{text-align:center;padding:var(--space-2xl);color:var(--text-muted)}.loading-spinner{border:3px solid var(--border-subtle);border-top-color:var(--accent-primary);width:40px;height:40px;margin:0 auto var(--space-md);border-radius:50%;animation:1s linear infinite spin}.reader-sentence{margin-bottom:var(--space-lg)}.reader-sentence-header{text-align:center;margin-top:var(--space-2xl);margin-bottom:var(--space-xl);color:var(--text-primary);font-size:1.5rem;font-weight:bolder}.reader-sentence-comment{text-align:center;color:var(--text-muted);margin-bottom:var(--space-lg);font-size:1rem;font-style:italic;line-height:1.5}.reader-sentence-original{color:var(--text-primary);font-size:1.125rem;line-height:1.8}.reader-sentence-text{flex:1}.reader-sentence-text.reader-playing-sentence{background:0 0;text-decoration:none}.reader-playback-underline-root{position:relative}.reader-playback-underline-layer{z-index:4;pointer-events:none;position:absolute;inset:0}.reader-playback-underline-segment{background:var(--saved-phrase-highlight-color,#86efac);border-radius:999px;height:2px;display:block;position:absolute}.reader-page-indicator{text-align:center;font-size:var(--text-sm);color:var(--text-muted);padding:var(--space-sm) var(--space-md);pointer-events:none;flex-shrink:0;justify-content:center;align-items:center;min-height:32px;display:flex}.reader-page-indicator[hidden]{display:none}.reader-content.reader-content-paged{overscroll-behavior:none;touch-action:none;flex-direction:column;min-height:0;padding:0;display:flex;overflow:hidden}.reader-paged-viewport{overscroll-behavior:none;flex:1;min-height:0;padding-bottom:16px;display:flex;position:relative;overflow:hidden}.reader-page-nav{cursor:pointer;width:56px;color:var(--text-muted);z-index:2;background:0 0;border:none;flex-shrink:0;justify-content:center;align-items:center;transition:background .2s,color .2s;display:flex}.reader-page-nav:hover{color:var(--text-primary);background:#0000000f}.dark .reader-page-nav:hover{background:#ffffff14}.reader-page-nav svg{flex-shrink:0;width:28px;height:28px}.reader-page-nav:disabled,.reader-page-nav[disabled]{opacity:.35;cursor:not-allowed;pointer-events:none}.reader-paged-center{overscroll-behavior:none;flex:1;min-width:0;min-height:0;position:relative;overflow:hidden}.reader-pages-stack{pointer-events:none;width:100%;height:100%;transition:transform .2s ease-out;display:flex;position:absolute;top:0;left:0;overflow:visible}.reader-pages-stack .reader-page{pointer-events:auto}.reader-page{flex:0 0 calc(100% / var(--reader-total-pages,1));width:calc(100% / var(--reader-total-pages,1));overscroll-behavior:none;flex-direction:column;height:100%;display:flex;overflow:hidden}.reader-page-inner{padding:var(--space-xl) var(--space-2xl);overscroll-behavior:none;flex:1;width:100%;max-width:800px;min-height:0;margin:0 auto;overflow:hidden}.reader-page-measure{visibility:hidden;pointer-events:none;position:absolute;left:-9999px}.progress-bar{background:var(--bg-tertiary);z-index:100;height:4px;position:absolute;bottom:0;left:0;right:0}.progress-fill{background:var(--primary);width:0%;height:100%;transition:width .1s}.error-state{text-align:center;padding:var(--space-2xl);color:var(--destructive)}.error-state button{margin-top:var(--space-md);padding:var(--space-sm) var(--space-lg);background:var(--primary);color:var(--primary-foreground);border-radius:var(--radius-sm);cursor:pointer;border:none;font-weight:600}.reader-layout{flex:1;height:calc(100vh - 60px);display:flex;position:relative;overflow:hidden}.reader-sidebar{background:var(--bg-secondary);border-right:1px solid var(--border);width:280px;padding:var(--space-lg);flex-shrink:0;transition:width .3s cubic-bezier(.4,0,.2,1),padding .3s,opacity .2s;overflow:hidden auto}.reader-sidebar.collapsed{border-right:none;width:0;padding:0;overflow:visible}.reader-sidebar.collapsed .reader-sidebar-title,.reader-sidebar.collapsed .reader-toc,.reader-sidebar.collapsed .reader-sidebar-panel-heading,.reader-sidebar.collapsed .sidebar-header-list,.reader-sidebar.collapsed .text-muted,.reader-sidebar.collapsed>p{display:none!important}.reader-sidebar-panel-heading{text-align:center;color:var(--foreground);padding:0 0 var(--space-md);margin:0 0 var(--space-md);border-bottom:1px solid var(--border);font-size:1.125rem;font-weight:400}.reader-sidebar h3{font-size:var(--text-sm);text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);margin-bottom:var(--space-md)}.sidebar-toggle{background:var(--background);border:1px solid var(--border);cursor:pointer;z-index:10;width:24px;height:24px;color:var(--text-secondary);border-radius:50%;justify-content:center;align-items:center;margin-left:-12px;padding:0;transition:left .3s cubic-bezier(.4,0,.2,1),transform .3s,background .2s,color .2s;display:flex;position:absolute;top:50%;left:280px;transform:translateY(-50%);box-shadow:0 1px 3px #0000001a}.sidebar-toggle:hover{background:var(--accent);color:var(--accent-foreground);border-color:var(--accent)}.sidebar-toggle svg{transition:transform .3s}.reader-sidebar.collapsed+.sidebar-toggle{margin-left:0;left:0;transform:translateY(-50%)translate(50%)}.reader-sidebar.collapsed+.sidebar-toggle svg{transform:rotate(180deg)}.reader-main{flex-direction:column;flex:1;display:flex;position:relative;overflow:hidden}.reader-header{padding:var(--space-lg) var(--space-xl);border-bottom:1px solid var(--border-subtle);background:var(--bg-primary);align-items:center;gap:var(--space-md);display:flex;position:relative;overflow:visible}.reader-header .reader-title{text-align:center;white-space:nowrap;text-overflow:ellipsis;max-width:40%;position:absolute;left:50%;overflow:hidden;transform:translate(-50%)}.reader-controls{margin-left:auto;overflow:visible}.tts-settings-popover{background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius-md);z-index:100;flex-direction:column;gap:12px;width:260px;margin-top:8px;padding:16px;display:flex;position:absolute;top:100%;right:0;box-shadow:0 4px 12px #00000026}.tts-setting-heading{text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);margin:0 0 4px;font-size:11px;font-weight:600}.tts-fallback-details{color:var(--text-secondary);font-size:12px}.tts-fallback-details summary{cursor:pointer;font-weight:500}.tts-fallback-details[open] .tts-setting-row{margin-top:8px}.tts-setting-group{flex-direction:column;gap:4px;display:flex}.tts-setting-group label{color:var(--text-muted);font-size:12px;font-weight:600}.tts-select{border-radius:var(--radius-sm);border:1px solid var(--border-medium);background:var(--bg-secondary);width:100%;color:var(--text-primary);cursor:pointer;padding:6px;font-size:13px}.tts-setting-row{justify-content:space-between;gap:12px;display:flex}.tts-setting-row .tts-setting-group{flex:1}input[type=range]{cursor:pointer;width:100%;accent-color:var(--accent-primary)}.reader-settings-wrapper{position:relative}.reader-settings-dropdown{background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius-md);z-index:1000;flex-direction:column;gap:14px;width:280px;max-width:calc(100vw - 2rem);margin-top:8px;padding:12px 16px;display:none;position:absolute;top:100%;right:0;box-shadow:0 4px 12px #00000026}.reader-settings-dropdown.is-open{display:flex!important}.reader-settings-dropdown[hidden]{display:none}.reader-setting-item{flex-direction:row;justify-content:space-between;align-items:center;gap:12px;display:flex}.reader-setting-label{color:var(--text-muted);flex-shrink:0;min-width:0;font-size:12px;font-weight:600}.reader-setting-select{border-radius:var(--radius-sm);border:1px solid var(--border-medium);background:var(--bg-secondary);min-width:120px;color:var(--text-primary);cursor:pointer;flex-shrink:0;padding:6px 10px;font-size:13px}.reader-setting-control{flex-shrink:0;align-items:center;gap:8px;display:flex}.reader-setting-color-input{border:1px solid var(--border);border-radius:var(--radius-sm);cursor:pointer;background:var(--bg-primary);flex-shrink:0;width:36px;height:28px;padding:2px}.reader-setting-color-input:hover{border-color:var(--border-focus)}.reader-setting-color-value{color:var(--text-secondary);min-width:52px;font-size:12px}.reader-setting-placeholder{color:var(--text-muted);margin:0;font-size:13px}.reader-setting-item .bean-toggle{flex-shrink:0}.bean-toggle{cursor:pointer;background:0 0;border:none;flex-shrink:0;align-items:center;padding:0;display:inline-flex}.bean-toggle-track{background:var(--muted);border-radius:9999px;align-items:center;width:44px;height:24px;padding:2px;transition:background .2s;display:inline-flex}.bean-toggle[aria-checked=true] .bean-toggle-track{background:var(--accent-primary)}.bean-toggle-thumb{background:var(--bg-primary);border-radius:50%;width:20px;height:20px;transition:transform .2s;box-shadow:0 1px 3px #0003}.bean-toggle[aria-checked=true] .bean-toggle-thumb{transform:translate(20px)}.bean-toggle:hover .bean-toggle-track{filter:brightness(.95)}.bean-toggle:focus-visible{outline:2px solid var(--accent-primary);outline-offset:2px;border-radius:9999px}.edit-dropdown-popover{background:var(--bg-elevated);border:1px solid var(--border-medium);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);z-index:1000;flex-direction:column;min-width:180px;margin-top:8px;padding:4px 0;display:flex;position:absolute;top:100%;right:0}.edit-dropdown-popover[hidden]{display:none}.edit-dropdown-popover .dropdown-item{color:var(--text-primary);text-align:left;cursor:pointer;background:0 0;border:none;align-items:center;gap:8px;width:100%;padding:8px 16px;font-size:14px;transition:background-color .2s;display:flex}.edit-dropdown-popover .dropdown-item:hover{background:var(--bg-hover)}.sentence-block.editing{background:var(--bg-tertiary);border-radius:10px;flex-direction:column;gap:8px;padding:12px;display:flex}.edit-mode-group{flex-direction:column;gap:4px;width:100%;display:flex}.edit-label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;font-size:11px;font-weight:600}.edit-textarea{background:var(--bg-secondary);border:1px solid var(--border-medium);border-radius:var(--radius-sm);width:100%;min-height:60px;color:var(--text-primary);resize:vertical;padding:8px;font-family:inherit;font-size:1rem;line-height:1.5}.edit-textarea:focus{border-color:var(--accent-primary);box-shadow:0 0 0 2px var(--accent-primary-alpha);outline:none}.edit-actions{justify-content:flex-end;margin-top:4px;display:flex}.text-content.muted,.translated-text.muted{opacity:.6}.btn-icon-save{background:var(--bg-secondary);border:1px solid var(--border-medium);width:36px;height:36px;color:var(--accent-primary);cursor:pointer;border-radius:50%;justify-content:center;align-items:center;transition:all .2s;display:flex}.btn-icon-save:hover{background:var(--accent-primary-alpha);border-color:var(--accent-primary);transform:scale(1.05)}.btn-icon-save:active{transform:scale(.95)}.textarea-wrapper{width:100%;height:fit-content;position:relative}.edit-textarea{padding-bottom:32px;padding-right:48px}.btn-icon-save.absolute-save{background:var(--bg-secondary);border:1px solid var(--border-medium);opacity:.9;width:32px;height:32px;position:absolute;bottom:20px;right:8px;box-shadow:0 2px 5px #0000001a}.btn-icon-save.absolute-save:hover{opacity:1;transform:scale(1.05)}.reader-content{padding:var(--space-xl) var(--space-2xl);flex:1;width:100%;max-width:800px;margin:0 auto;padding-bottom:110px;overflow-y:auto}.reader-sentence-player{box-sizing:border-box;border:1px solid var(--border);background:var(--bg-secondary);width:min(620px,100% - 32px);min-height:44px;color:var(--foreground);border-radius:10px;flex:none;align-self:center;align-items:center;gap:8px;margin:8px auto;padding:6px 10px;display:flex}.reader-sentence-player-controls{flex:none;align-items:center;gap:8px;display:flex}.reader-sentence-player-icon,.reader-sentence-player-play{border:1px solid var(--border);width:32px;height:32px;color:var(--muted-foreground);cursor:pointer;background:0 0;border-radius:50%;flex:none;justify-content:center;align-items:center;padding:0;transition:background .14s,color .14s,border-color .14s;display:inline-flex}.reader-sentence-player-icon svg,.reader-sentence-player-play svg{width:16px;height:16px}.reader-sentence-player-icon:hover:not(:disabled){background:var(--muted);color:var(--foreground)}.reader-sentence-player-icon:disabled{opacity:.35;cursor:not-allowed}.reader-sentence-player-play{background:var(--primary);border-color:var(--primary);color:var(--primary-foreground)}.reader-sentence-player-play:hover{filter:brightness(1.07)}.reader-sentence-player-loop.is-looping{background:var(--primary);border-color:var(--primary);color:var(--primary-foreground)}.reader-sentence-player-loop.is-looping:hover{filter:brightness(1.07)}.reader-sentence-player-stop-icon,.reader-sentence-player-play.is-playing .reader-sentence-player-play-icon{display:none}.reader-sentence-player-play.is-playing .reader-sentence-player-stop-icon{display:block}.reader-sentence-player-track{flex:1;min-width:0}.reader-sentence-player-track input[type=range]{width:100%;height:4px;accent-color:var(--primary);cursor:pointer;margin:0}.reader-sentence-player-track input[type=range]:disabled{cursor:default;opacity:.55}.reader-sentence-player-meta{min-width:0;color:var(--muted-foreground);align-items:center;gap:8px;margin-top:2px;font-size:10px;display:flex}.reader-sentence-player-meta span:first-child{color:var(--foreground);flex:none;font-weight:700}.reader-sentence-player-meta span:last-child{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.reader-sentence-player-speed select{border:1px solid var(--border);background:var(--bg-tertiary);height:30px;color:var(--foreground);font:inherit;cursor:pointer;border-radius:7px;padding:0 5px;font-size:12px}.reader-content.reader-font-small{font-size:.875rem}.reader-content.reader-font-medium{font-size:1rem}.reader-content.reader-font-large{font-size:1.125rem}.reader-content .reader-sentence-original{font-size:1.125em}.reader-content .reader-sentence-header .reader-sentence-original{font-size:1.5em}.reader-content .reader-sentence-comment .reader-sentence-original{font-size:1em}.reader-content .reader-sentence-translation{font-size:.9em}.reader-content .interactive-word{border-radius:.2em;padding:0 .15em}.interactive-word{cursor:pointer;border-radius:var(--radius-sm);border:1px solid #0000;padding:0 2px;transition:border-color .15s,background-color .15s}.interactive-word:hover{border-color:var(--primary)}.word-popover,.phrase-popup{--bg-secondary:var(--bg-elevated);--foreground:oklch(91.85% .0257 285.883);--muted-foreground:oklch(71.66% .0462 285.174);--primary:oklch(71.62% .1597 290.396);--primary-foreground:oklch(17.43% .0227 283.8);--border:var(--border-subtle);--muted:oklch(27.1% .0621 281.438);--input:oklch(27.1% .0621 281.438);--radius:.5rem;--shadow-lg:0 10px 25px -5px #00000059;--space-xs:4px;--space-sm:8px;--space-md:12px;--space-lg:16px;--destructive:#e53e3e}.word-popover{z-index:1000;background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius);min-width:300px;max-width:350px;padding:var(--space-lg);box-shadow:var(--shadow-lg);color:var(--foreground);position:fixed}.word-popover-main-header{margin-bottom:var(--space-md);justify-content:space-between;align-items:center;display:flex}.word-popover-header-actions{align-items:center;gap:var(--space-xs);display:flex}.word-popover-main-title{color:var(--muted-foreground);font-size:1rem;font-weight:600}.word-popover-icon-btn,.word-popover-delete-btn{border-radius:var(--radius-sm);width:28px;height:28px;color:var(--muted-foreground);cursor:pointer;background:0 0;border:none;justify-content:center;align-items:center;padding:0;transition:background .2s,color .2s;display:inline-flex}.word-popover-icon-btn:hover,.word-popover-delete-btn:hover{background:var(--muted);color:var(--foreground)}.word-popover-delete-btn:hover{color:var(--destructive)}.word-popover-fields{gap:var(--space-md);margin-bottom:var(--space-md);flex-direction:column;display:flex}.word-popover-field{gap:var(--space-xs);flex-direction:column;display:flex}.word-popover-field-translation .word-popover-input-box-full{width:100%;min-width:0}.word-popover-label{font-size:var(--text-sm);color:var(--muted-foreground);display:block}.word-popover-input-box{align-items:center;gap:var(--space-sm);min-height:40px;padding:var(--space-sm) var(--space-md);background:var(--input);border:1px solid var(--border);border-radius:var(--radius-sm);display:flex}.word-popover-input-text{min-width:0;color:var(--foreground);flex:1;font-size:.9375rem}.word-popover-chip{background:var(--primary);color:var(--primary-foreground);border-radius:4px;flex-shrink:0;padding:2px 8px;font-size:11px;font-weight:600}.word-popover-phonetic-chip{background:var(--muted);color:var(--muted-foreground);font-style:italic;font-weight:500}.word-popover-tts-btn{background:var(--muted);width:28px;height:28px;color:var(--foreground);cursor:pointer;border:none;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;padding:0;transition:background .2s,color .2s;display:inline-flex}.word-popover-tts-btn:hover{background:var(--accent);color:var(--accent-foreground)}.word-popover-section{margin-bottom:var(--space-md)}.word-popover-definition-box{color:var(--foreground);padding:var(--space-md);background:var(--muted);border:1px solid var(--border);border-radius:var(--radius-sm);min-height:60px;font-size:.9375rem;line-height:1.5}.word-popover-context-section .word-popover-label{margin-top:var(--space-sm)}.word-popover-context-section .word-popover-label:first-child{margin-top:0}.word-popover-meta{color:var(--muted-foreground);margin-bottom:var(--space-xs);font-size:.875rem}.word-popover-learning-grid{gap:var(--space-md);grid-template-columns:1fr 1fr;display:grid}.word-popover-context-box{color:var(--foreground);padding:var(--space-sm) var(--space-md);background:var(--muted);border:1px solid var(--border);border-radius:var(--radius-sm);white-space:pre-wrap;font-size:.875rem;font-style:italic;line-height:1.6;overflow:visible}.word-popover-context-box .textpro-sentence .textpro-word-box,.word-popover-context-box .textpro-word-box{border-radius:2px!important;padding:1px 2px!important;transition:background .12s!important;display:inline!important}.word-popover-context-box .textpro-sentence .textpro-word-box:not([data-mastery]):hover,.word-popover-context-box .textpro-word-box:not([data-mastery]):hover{background:#8b5cf638!important;outline:none!important}.word-popover-word-details{margin-bottom:var(--space-md);border:1px 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