.project-actions {
  align-items: center;
  gap: 8px;
}

.action-menu {
  position: relative;
}

.action-menu summary {
  list-style: none;
  cursor: pointer;
  user-select: none;
  border: 1px solid #ccd5e1;
  border-radius: 6px;
  background: #fff;
  color: #3a475b;
  padding: 9px 13px;
  font-size: 13px;
  line-height: normal;
}

.action-menu summary::-webkit-details-marker { display: none; }
.action-menu summary::after { content: "▾"; margin-left: 7px; color: #8794a5; }
.action-menu[open] summary { border-color: #1685f8; color: #1685f8; }

.action-menu-panel {
  position: absolute;
  right: 0;
  top: calc(100% + 7px);
  z-index: 30;
  display: grid;
  min-width: 180px;
  padding: 7px;
  background: #fff;
  border: 1px solid #d7dfe8;
  border-radius: 8px;
  box-shadow: 0 14px 34px #10233f24;
}

.action-menu-panel button {
  width: 100%;
  border: 0;
  text-align: left;
  white-space: nowrap;
}

.action-menu-panel button:hover { background: #f0f6fd; }

/* 播放区只保留一组PPT前后翻页；侧栏保留低频的精确跳页。 */
#previousPage,
#nextPage {
  display: none;
}