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var(--space-lg);text-align:left}.wc__header{display:flex;align-items:center;gap:var(--space-md);margin-bottom:var(--space-lg)}.wc__icon{font-size:1.75rem;line-height:1}.wc__title{font-size:var(--font-size-xl);font-weight:700;color:var(--text-primary);margin:0}.wc__description{color:var(--text-secondary);line-height:var(--line-height-relaxed);margin-bottom:var(--space-lg);font-size:var(--font-size-base)}.wc__prereq{display:flex;align-items:flex-start;gap:var(--space-sm);padding:var(--space-md);background:var(--status-insufficient-light);border:1px solid 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var(--space-md)}.dep-prompt__actions{display:flex;gap:var(--space-sm)}.dep-prompt__btn{padding:var(--space-sm) var(--space-lg);border-radius:var(--radius-md);font-size:var(--font-size-sm);font-weight:500;cursor:pointer;font-family:var(--font-main);transition:background var(--transition-fast)}.dep-prompt__btn--primary{background:var(--accent-primary);color:var(--text-inverse);border:none}.dep-prompt__btn--primary:hover{background:var(--accent-primary-hover)}.dep-prompt__btn--secondary{background:transparent;border:1px solid var(--border-medium);color:var(--text-secondary)}.dep-prompt__btn--secondary:hover{background:var(--bg-hover)}.toast-container{position:fixed;bottom:var(--space-xl);right:var(--space-xl);display:flex;flex-direction:column;gap:var(--space-sm);z-index:9999;pointer-events:none}.toast{display:flex;align-items:center;gap:var(--space-sm);padding:var(--space-md) 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toast-in{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.empty-state{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--space-2xl) var(--space-xl);text-align:center}.empty-state__icon{font-size:2.5rem;margin-bottom:var(--space-lg);opacity:.6}.empty-state__title{font-size:var(--font-size-md);font-weight:600;color:var(--text-primary);margin-bottom:var(--space-sm)}.empty-state__description{font-size:var(--font-size-sm);color:var(--text-muted);line-height:var(--line-height-relaxed);max-width:320px;margin-bottom:var(--space-lg)}.empty-state__steps{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:var(--space-xs);text-align:left;width:100%;max-width:300px}.empty-state__step{display:flex;align-items:center;gap:var(--space-sm);font-size:var(--font-size-sm);color:var(--text-secondary);padding:var(--space-xs) var(--space-sm);border-radius:var(--radius-sm)}.empty-state__step-num{width:20px;height:20px;border-radius:var(--radius-pill);background:var(--bg-tertiary);color:var(--text-muted);font-size:var(--font-size-xs);font-weight:600;display:flex;align-items:center;justify-content:center;flex-shrink:0}.empty-state__step--active .empty-state__step-num{background:var(--accent-primary-light);color:var(--accent-primary)}.empty-state__btn{padding:var(--space-sm) var(--space-xl);background:var(--accent-primary);color:var(--text-inverse);border:none;border-radius:var(--radius-md);font-size:var(--font-size-sm);font-weight:500;cursor:pointer;font-family:var(--font-main);margin-top:var(--space-md);transition:background var(--transition-fast)}.empty-state__btn:hover{background:var(--accent-primary-hover)}.knowledge-shell{height:100%;overflow:hidden;display:flex;flex-direction:row}.knowledge-panel{flex:1;min-width:180px;display:flex;flex-direction:column;gap:var(--space-md);height:100%;overflow-y:auto;overflow-x:hidden}.knowledge-shell__detail{flex-shrink:0;display:flex;flex-direction:column;height:100%;overflow:hidden;background:var(--bg-main);border-left:1px solid var(--border-light);animation:detail-enter .18s ease}@keyframes detail-enter{0%{opacity:0}to{opacity:1}}.article-drawer__header{display:flex;align-items:center;justify-content:space-between;padding:var(--space-xs) var(--space-md);border-bottom:1px solid 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var(--space-md)}.article-detail__section-label{font-size:var(--font-size-xs);font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted);margin-bottom:var(--space-xs)}.article-detail__section-body{font-size:var(--font-size-sm);color:var(--text-primary);line-height:1.6}.article-detail__links{display:flex;gap:var(--space-sm);flex-wrap:wrap}.article-detail__pico{display:flex;flex-direction:column;gap:var(--space-xs)}.article-detail__pico-item{display:flex;align-items:center;gap:var(--space-sm)}.article-detail__pico-label{font-size:var(--font-size-xs);color:var(--text-secondary)}.paper-card--selectable{cursor:pointer}.paper-card--selectable:hover{border-color:var(--accent-primary);background:var(--accent-primary-light)}.knowledge-panel__header{display:flex;align-items:center;gap:var(--space-sm);font-weight:600;font-size:var(--font-size-md);color:var(--text-primary);padding:var(--space-sm) 0}.knowledge-panel__count{background:var(--accent-primary-light);color:var(--accent-primary);font-size:var(--font-size-xs);font-weight:600;padding:2px 8px;border-radius:var(--radius-pill)}.knowledge-panel__upload{display:flex;align-items:center;gap:var(--space-sm);padding:var(--space-md);border:2px dashed var(--border-medium);border-radius:var(--radius-lg);background:var(--bg-secondary);cursor:pointer;transition:border-color var(--transition-fast),background var(--transition-fast)}.knowledge-panel__upload:hover{border-color:var(--accent-primary);background:var(--accent-primary-light)}.knowledge-panel__upload-icon{font-size:1.25rem}.knowledge-panel__upload-text{font-size:var(--font-size-sm);color:var(--text-secondary)}.knowledge-panel__search{display:flex;gap:var(--space-sm)}.knowledge-panel__search-input{flex:1;padding:var(--space-sm) var(--space-md);border:1px solid var(--border-medium);border-radius:var(--radius-md);font-size:var(--font-size-sm);font-family:var(--font-main);background:var(--bg-main);color:var(--text-primary)}.knowledge-panel__search-input:focus{outline:none;border-color:var(--accent-primary)}.knowledge-panel__search-btn{flex-shrink:0}.knowledge-panel__error{padding:var(--space-sm) var(--space-md);background:var(--status-falsified-light);color:var(--status-falsified);border-radius:var(--radius-md);font-size:var(--font-size-sm)}.knowledge-panel__view-toggle{display:flex;gap:4px}.knowledge-panel__list{display:flex;flex-direction:column;gap:var(--space-sm)}.knowledge-panel__list-label{display:flex;align-items:center;font-size:11px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--text-muted);padding:var(--space-xs) 0 var(--space-xs);border-bottom:1px solid var(--border-subtle, 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6px;border-radius:var(--radius-sm)}.knowledge-card__year{font-size:var(--font-size-xs);color:var(--text-muted)}.knowledge-card__delete{margin-left:auto;background:none;border:none;cursor:pointer;color:var(--text-light);font-size:var(--font-size-sm);padding:2px 4px;border-radius:var(--radius-sm);transition:color var(--transition-fast),background var(--transition-fast)}.knowledge-card__delete:hover{color:var(--status-falsified);background:var(--status-falsified-light)}.knowledge-card__title{font-weight:600;font-size:var(--font-size-sm);color:var(--text-primary);line-height:var(--line-height-tight);margin-bottom:var(--space-xs)}.knowledge-card__authors{font-size:var(--font-size-xs);color:var(--text-secondary);margin-bottom:2px}.knowledge-card__journal{font-size:var(--font-size-xs);color:var(--text-muted);font-style:italic;margin-bottom:var(--space-xs)}.knowledge-card__pmid{font-style:normal;color:var(--accent-primary)}.knowledge-card__links{display:flex;gap:var(--space-sm);margin-top:var(--space-xs)}.knowledge-card__ext-link{font-size:var(--font-size-xs);font-weight:600;color:var(--accent-primary);text-decoration:none;padding:1px 6px;border:1px solid var(--accent-primary);border-radius:var(--radius-sm);background:var(--accent-primary-light);transition:background var(--transition-fast),color 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