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.header{background:var(--bg-primary);border-bottom-color:var(--border-color)}.theme-dark .search-input,.theme-dark .filter-select{background:var(--bg-secondary);border-color:var(--border-color);color:var(--text-primary)}.theme-dark .graph-panel{background:var(--bg-primary);border-color:var(--border-color)}.theme-dark .detail-float-card{background:var(--bg-secondary);border-color:var(--border-color)}.theme-dark .detail-header,.theme-dark .detail-example,.theme-dark .relation-item{background:var(--bg-tertiary)}.theme-dark .detail-example:hover,.theme-dark .relation-item:hover{background:var(--bg-primary)}.theme-dark .legend-container{border-top-color:var(--border-color)}.theme-dark .legend-item:hover{background:var(--bg-secondary)}.theme-dark .favorite-btn{background:var(--bg-secondary);border-color:var(--border-color)}.theme-dark .detail-close-btn{background:var(--bg-tertiary)}.theme-dark .empty-state-icon{color:var(--text-muted)}.lang-switcher{position:relative;display:inline-flex;align-items:center;width:64px;height:32px;border-radius:16px;background:var(--bg-secondary);border:1px solid var(--border-color);padding:0;cursor:pointer;transition:all var(--transition-fast);overflow:hidden}.lang-switcher:hover{border-color:var(--color-primary-light);box-shadow:0 0 0 2px #4f46e51a}.lang-label{display:flex;align-items:center;justify-content:center;width:50%;height:100%;font-size:11px;font-weight:600;color:var(--text-muted);z-index:1;transition:color var(--transition-fast);-webkit-user-select:none;user-select:none}.lang-label.active{color:var(--text-primary)}.lang-slider{position:absolute;top:2px;left:2px;width:calc(50% - 4px);height:calc(100% - 4px);border-radius:14px;background:var(--bg-primary);box-shadow:0 1px 3px #0000001a;transition:transform var(--transition-slow)}.theme-dark .lang-slider{background:var(--bg-tertiary)}