/* 公告独立于原首页布局；空列表时不占空间，不修改 hero / footer。 */
.announcements[hidden],
.announcements [hidden],
.announcement-dialog [hidden] { display: none !important; }

.announcements {
  margin: 0 auto;
  padding: 24px 10.417vw 64px;
  color: #011925;
}
.announcements-heading { margin-bottom: 24px; }
.announcements-heading h2 { margin: 0; font-size: clamp(24px, 1.667vw, 32px); font-weight: 600; }
.announcements-heading p { margin: 10px 0 0; color: #52625c; font-size: 15px; line-height: 1.6; }
.announcement-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; padding: 0; margin: 0; list-style: none; }
.announcement-card { min-width: 0; border: 1px solid #e0eae4; border-radius: 16px; background: #fff; }
.announcement-link {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  min-height: 100%;
  padding: 24px;
  border-radius: inherit;
  text-decoration: none;
  color: inherit;
}
.announcement-link:hover { background: #f4fcf7; }
.announcement-copy { min-width: 0; flex: 1; }
.announcement-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; font-size: 13px; line-height: 1.6; }
.announcement-type { padding: 3px 9px; border-radius: 6px; background: #e2fdf0; color: #225540; }
.announcement-date { color: #64746c; font-variant-numeric: tabular-nums; }
.announcement-title { margin: 14px 0 0; font-size: 20px; font-weight: 600; line-height: 1.5; overflow-wrap: anywhere; }
.announcement-subtitle { margin: 8px 0 0; color: #52625c; font-size: 14px; line-height: 1.8; overflow-wrap: anywhere; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.announcement-read { display: block; margin-top: 18px; color: #225540; font-size: 14px; }
.announcement-cover { flex: 0 0 112px; width: 112px; height: 84px; border-radius: 8px; object-fit: cover; background: #f2f7f4; }
.announcements-actions { margin-top: 24px; text-align: center; }
.announcement-status { color: #52625c; margin: 12px 0; font-size: 14px; line-height: 1.8; }
.announcement-status:empty { display: none; }
.announcement-button {
  appearance: none;
  border: 1px solid #c0d5c9;
  border-radius: 9px;
  padding: 10px 22px;
  min-height: 44px;
  color: #225540;
  background: #f4fcf7;
  font: inherit;
  font-size: 14px;
  cursor: pointer;
}
.announcement-button:hover { background: #e2fdf0; }
.announcement-button:disabled { cursor: wait; opacity: .65; }
.announcement-link:focus-visible,
.announcement-button:focus-visible { outline: 3px solid #267550; outline-offset: 4px; }

.announcement-dialog {
  width: min(760px, calc(100% - 40px));
  max-height: calc(100dvh - 48px);
  padding: 0;
  border: 1px solid #e0eae4;
  border-radius: 20px;
  color: #011925;
  background: #fff;
  box-shadow: 0 24px 80px #01192526;
  overscroll-behavior: contain;
}
.announcement-dialog::backdrop { background: #01192580; }
body:has(.announcement-dialog[open]) { overflow: hidden; }
.announcement-dialog-toolbar { display: flex; justify-content: flex-end; position: sticky; top: 0; padding: 16px 24px; background: #fff; border-bottom: 1px solid #edf3ef; z-index: 1; }
.announcement-detail { padding: 24px 32px 36px; }
.announcement-detail h2 { margin: 16px 0 20px; font-size: clamp(22px, 3vw, 28px); font-weight: 600; line-height: 1.5; overflow-wrap: anywhere; }
.announcement-detail-subtitle { margin: 0 0 24px; color: #52625c; font-size: 16px; line-height: 1.8; white-space: pre-wrap; overflow-wrap: anywhere; }
.announcement-detail-image { width: 100%; max-height: 360px; object-fit: contain; border-radius: 12px; margin: 0 0 24px; }
.announcement-detail-content { color: #102a13; font-size: 16px; line-height: 1.9; white-space: pre-wrap; overflow-wrap: anywhere; tab-size: 4; }

@media (max-width: 1023px) {
  .announcements { padding: 0 24px 48px; }
  .announcement-list { grid-template-columns: minmax(0, 1fr); gap: 14px; }
  .announcement-link { padding: 20px; gap: 14px; }
  .announcement-title { font-size: 18px; }
  .announcement-cover { flex-basis: 80px; width: 80px; height: 64px; }
  .announcement-dialog { width: calc(100% - 24px); max-height: calc(100dvh - 24px); border-radius: 16px; }
  .announcement-dialog-toolbar { padding: 12px 18px; }
  .announcement-detail { padding: 20px 22px 28px; }
}