.main-announce {
  background: var(--color-white);
}

.a-page {
  padding-top: calc(var(--header-h) + 2.75rem + 2.5rem);
  padding-bottom: 6.25rem;
}

.a-head {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid rgb(223, 224, 226);
}
.a-head__title {
  margin: 0;
  color: var(--color-text);
  font-family: "MiSans VF", "PingFang SC", sans-serif;
  font-size: var(--font-48);
  font-weight: 400;
  line-height: var(--font-64);
}
.a-head__desc {
  margin: 0;
  color: var(--color-text-muted);
  font-family: "MiSans VF", "PingFang SC", sans-serif;
  font-size: var(--font-18);
  font-weight: 400;
  line-height: var(--font-24);
}

.a-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  margin-top: 2.75rem;
  margin-bottom: 2.75rem;
}

.a-filter__group {
  position: relative;
}

.a-filter {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 3rem;
  padding: 0.75rem 2rem;
  border: 1px solid rgb(223, 224, 226);
  border-radius: 6.25rem;
  background: transparent;
  color: var(--color-text);
  font-family: "MiSans VF", "PingFang SC", sans-serif;
  font-size: var(--font-18);
  font-weight: 400;
  line-height: var(--font-24);
  cursor: pointer;
  transition: border-color 0.25s ease, color 0.25s ease;
}
.a-filter:hover, .a-filter.is-open, .a-filter.is-selected {
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.a-filter.is-open .a-filter__chevron {
  transform: rotate(180deg);
}

.a-filter__chevron {
  display: block;
  width: 0.6875rem;
  height: auto;
  transition: transform var(--duration-fast) var(--easing);
}

.a-filter__dropdown {
  position: absolute;
  top: calc(100% + 0.5rem);
  left: 0;
  z-index: 30;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  min-width: 12.5rem;
  padding: 1rem;
  border-radius: 1rem;
  background: var(--color-white);
  box-shadow: 0 0.5rem 1.5rem rgba(46, 53, 58, 0.14);
}
.a-filter__dropdown[hidden] {
  display: none;
}

.a-filter__dropdown-item {
  display: block;
  width: 100%;
  padding: 0.625rem 1.25rem;
  border: 0;
  border-radius: 6.25rem;
  background: transparent;
  color: var(--color-text);
  font-family: "MiSans VF", "PingFang SC", sans-serif;
  font-size: var(--font-16);
  font-weight: 400;
  line-height: var(--font-22);
  text-align: left;
  cursor: pointer;
  transition: background 0.25s ease, color 0.25s ease;
}
.a-filter__dropdown-item:hover {
  background: rgba(175, 181, 185, 0.12);
}
.a-filter__dropdown-item.is-active {
  background: var(--color-primary);
  color: var(--color-white);
}

.a-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 2.5rem;
  margin-bottom: 3.5rem;
}

.a-card {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  min-height: 15rem;
  padding: 2rem;
  border: 1px solid rgb(223, 224, 226);
  border-radius: 1.5rem;
  background: var(--color-white);
  text-decoration: none;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}
.a-card:hover {
  cursor: pointer;
  box-shadow: 0 0.75rem 2rem rgba(46, 53, 58, 0.06);
}
.a-card:hover .a-card__title {
  color: var(--color-primary);
}
.a-card:hover .a-card__link {
  color: var(--color-primary);
}
.a-card__date {
  color: var(--color-text-muted);
  font-family: "D-DIN-PRO", "MiSans VF", "PingFang SC", sans-serif;
  font-size: var(--font-18);
  font-weight: 400;
  line-height: var(--font-24);
}
.a-card__title {
  /* 3行  */
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
  margin: 0;
  flex: 1;
  color: var(--color-text);
  font-family: "MiSans VF", "PingFang SC", sans-serif;
  font-size: var(--font-24);
  font-weight: 400;
  line-height: var(--font-34);
  transition: color var(--duration-fast) var(--easing);
}
.a-card__link {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  margin-top: auto;
  color: var(--color-text-muted);
  font-family: "MiSans VF", "PingFang SC", sans-serif;
  font-size: var(--font-16);
  font-weight: 400;
  line-height: var(--font-22);
  text-decoration: none;
  transition: color var(--duration-fast) var(--easing);
}
.a-card__link svg {
  width: 1rem;
  height: auto;
  transition: filter var(--duration-fast) var(--easing);
}
.a-card__link path {
  fill: currentColor;
}

@media (max-width: 1439px) {
  .a-page {
    padding-top: calc(var(--header-h) + 40Px);
    padding-bottom: 72Px;
  }
  .a-head {
    gap: 12Px;
    padding-bottom: 28Px;
  }
  .a-head__title {
    font-size: 36Px;
    line-height: 48Px;
  }
  .a-head__desc {
    font-size: 16Px;
  }
  .a-toolbar {
    flex-wrap: wrap;
    gap: 16Px;
    margin-top: 32Px;
    margin-bottom: 32Px;
  }
  .a-filter {
    min-height: 44Px;
    padding: 10Px 24Px;
    font-size: 16Px;
  }
  .a-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16Px;
  }
  .a-card {
    min-height: 200Px;
    gap: 20Px;
    padding: 24Px;
  }
  .a-card__title {
    font-size: 20Px;
    line-height: 30Px;
  }
}
@media (max-width: 992px) {
  .a-toolbar {
    flex-direction: column;
    align-items: stretch;
  }
  .a-filter {
    width: fit-content;
  }
}
@media (max-width: 576px) {
  .a-page {
    padding-top: calc(var(--header-h) + 24Px);
    padding-bottom: 48Px;
  }
  .a-head {
    gap: 10Px;
    padding-bottom: 20Px;
  }
  .a-head__title {
    font-size: 28Px;
    line-height: 38Px;
  }
  .a-head__desc {
    font-size: 14Px;
    line-height: 22Px;
  }
  .a-toolbar {
    margin-top: 24Px;
    margin-bottom: 24Px;
  }
  .a-filter {
    min-height: 40Px;
    padding: 8Px 16Px;
    font-size: 14Px;
  }
  .a-grid {
    grid-template-columns: 1fr;
    gap: 12Px;
  }
  .a-card {
    min-height: 0;
    gap: 16Px;
    padding: 20Px;
    border-radius: 16Px;
  }
  .a-card__date {
    font-size: 14Px;
  }
  .a-card__title {
    font-size: 18Px;
    line-height: 26Px;
  }
  .a-card__link {
    font-size: 14Px;
  }
}