.invite-chip { position: fixed; right: 20px; bottom: 20px; z-index: 60; display: flex; align-items: center; gap: 10px;
  padding: 10px 12px 10px 16px; border: 1px solid var(--line); border-radius: 999px; background: rgba(255,255,255,.92);
  box-shadow: var(--shadow); font-size: 14px; transition: opacity .4s ease; }
.invite-chip.is-idle { opacity: .45; }