/* 侧栏公告时间轴 */
.card-announcement .announcement-timeline {
  --announcement-line-color: rgba(255, 255, 255, 0.35);
  --announcement-accent: #ff4d8d;
  position: relative;
  max-height: min(70vh, 620px);
  margin-top: 8px;
  padding-right: 8px;
  padding-left: 20px;
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-color: rgba(255, 255, 255, 0.48) transparent;
  scrollbar-width: thin;
}

.card-announcement .announcement-timeline::before {
  position: absolute;
  top: 9px;
  bottom: 12px;
  left: 5px;
  width: 2px;
  background: linear-gradient(to bottom, var(--announcement-accent), var(--announcement-line-color));
  content: '';
}

.card-announcement .announcement-entry {
  position: relative;
  padding: 0 0 18px;
}

.card-announcement .announcement-entry:last-child {
  padding-bottom: 0;
}

.card-announcement .announcement-entry::before {
  position: absolute;
  top: 7px;
  left: -20px;
  width: 12px;
  height: 12px;
  border: 2px solid rgba(255, 255, 255, 0.82);
  border-radius: 50%;
  background: var(--announcement-accent);
  box-shadow: 0 0 0 3px rgba(255, 77, 141, 0.2);
  content: '';
}

.card-announcement .announcement-entry.is-current::before {
  box-shadow: 0 0 0 4px rgba(255, 77, 141, 0.25), 0 0 12px rgba(255, 77, 141, 0.7);
}

.card-announcement .announcement-entry__current {
  display: inline-block;
  margin-bottom: 3px;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(255, 77, 141, 0.82);
  color: #fff;
  font-weight: 700;
  font-size: 0.78em;
}

.card-announcement .announcement-entry__time {
  display: block;
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.8em;
  line-height: 1.5;
}

.card-announcement .announcement-entry__body {
  margin-top: 10px;
  line-height: 1.8;
  overflow-wrap: anywhere;
}

.card-announcement .announcement-entry__body p {
  margin: 0 0 10px;
}

.card-announcement .announcement-entry__body p:last-child {
  margin-bottom: 0;
}

.card-announcement .announcement-entry__lead,
.card-announcement .announcement-entry__title {
  font-weight: 700;
}

.card-announcement .announcement-entry__list {
  margin: 0 0 10px;
  padding-left: 1.45em;
}

.card-announcement .announcement-entry__list li {
  margin-bottom: 7px;
  padding-left: 2px;
}

.card-announcement .announcement-entry__closing {
  margin-top: 14px !important;
}

.card-announcement .announcement-entry__details {
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.12);
}

.card-announcement .announcement-entry__summary {
  padding: 8px 10px;
  cursor: pointer;
  list-style-position: outside;
}

.card-announcement .announcement-entry__summary-title {
  display: block;
  font-weight: 600;
  line-height: 1.55;
}

.card-announcement .announcement-entry__details[open] > .announcement-entry__summary {
  border-bottom: 1px dashed var(--announcement-line-color);
}

.card-announcement .announcement-entry__details > .announcement-entry__body {
  padding: 0 10px 12px;
}

.card-announcement .announcement-history-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  margin-top: 14px;
  padding: 8px 12px;
  border: 1px solid rgba(255, 255, 255, 0.38);
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.16);
  color: inherit;
  font: inherit;
  cursor: pointer;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.card-announcement .announcement-history-toggle:hover,
.card-announcement .announcement-history-toggle:focus-visible {
  border-color: rgba(255, 255, 255, 0.72);
  background: rgba(255, 255, 255, 0.13);
}

.card-announcement .announcement-history-toggle__hide {
  display: none;
}

.card-announcement .announcement-history-toggle i {
  transition: transform 0.2s ease;
}

.card-announcement.is-history-expanded .announcement-history-toggle__show {
  display: none;
}

.card-announcement.is-history-expanded .announcement-history-toggle__hide {
  display: inline;
}

.card-announcement.is-history-expanded .announcement-history-toggle i {
  transform: rotate(180deg);
}

.card-announcement .announcementImg {
  display: block;
  width: 80%;
  height: auto;
  margin: 12px auto 16px;
  border-radius: 2em;
  box-shadow: 10px 8px 8px #000;
  object-fit: contain;
  transition: box-shadow 0.3s ease;
}

.card-announcement .announcementImg:hover {
  box-shadow: 4px 4px 4px rgba(0, 0, 12, 0.37);
}

@media (max-width: 768px) {
  .card-announcement .announcement-timeline {
    max-height: min(68vh, 560px);
    padding-left: 18px;
  }

  .card-announcement .announcement-entry::before {
    left: -18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .card-announcement .fa-shake {
    animation: none !important;
  }

  .card-announcement .announcement-history-toggle,
  .card-announcement .announcement-history-toggle i,
  .card-announcement .announcementImg {
    transition: none !important;
  }
}