.feed-burst-toggle{display:flex;align-items:center;justify-content:space-between;width:100%;padding:8px 16px;background:var(--bg-secondary,#f9fafb);border:none;border-bottom:1px solid var(--border-color,#e5e7eb);cursor:pointer;box-sizing:border-box;transition:background-color 150ms}.feed-burst-toggle:hover{background-color:var(--bg-tertiary,#f3f4f6)}.feed-burst-toggle__left{display:flex;align-items:center;gap:8px;min-width:0}.feed-burst-toggle__avatar{width:18px;height:18px;border-radius:50%;object-fit:cover;flex-shrink:0;opacity:0.8}.feed-burst-toggle__name{font-size:0.75rem;font-weight:600;color:var(--text-secondary,#6b7280);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.feed-burst-toggle__count{font-size:0.75rem;color:var(--text-tertiary,#9ca3af);white-space:nowrap}.feed-burst-toggle__chevron{display:flex;align-items:center;flex-shrink:0;margin-left:8px;color:var(--text-tertiary,#9ca3af);transition:transform 200ms ease}.feed-burst-toggle.open .feed-burst-toggle__chevron{transform:rotate(180deg)}.dark .feed-burst-toggle{background:var(--bg-tertiary);border-bottom-color:var(--border-color)}.dark .feed-burst-toggle:hover{background-color:#2b3445}