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(max-width:768px){.post-card,.post-composer{padding:12px}.post-composer-avatar{width:36px;height:36px;min-width:36px}.post-header{gap:10px}.post-avatar{width:40px;height:40px}.post-actions{gap:12px}.action-btn{padding:6px 12px;font-size:12px}.comment-replies{margin-left:32px}.filter-btn-bookmarks-label{display:none}.filter-btn-bookmarks{padding:6px 8px;min-width:unset}}