/* 活動公告內頁 */
.announcements-page {
  position: relative;
  width: 100%;
  padding: clamp(2rem, 5vw, 3.5rem) clamp(1.25rem, 4vw, 5rem)
    clamp(4rem, 8vw, 6rem);
  overflow-x: clip;
}

.announcements-page::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(1px 1px at 14% 20%, rgba(255, 255, 255, 0.35), transparent),
    radial-gradient(1px 1px at 82% 16%, rgba(120, 180, 255, 0.4), transparent),
    radial-gradient(1px 1px at 48% 78%, rgba(255, 255, 255, 0.28), transparent);
}

.announcements-page__inner {
  position: relative;
  z-index: 1;
  max-width: 80rem;
  margin: 0 auto;
}

.announcements-page__breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 0.5rem;
  margin-bottom: clamp(1.5rem, 4vw, 2rem);
  font-size: 0.8125rem;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.45);
}

.announcements-page__breadcrumb a {
  color: rgba(255, 255, 255, 0.55);
  text-decoration: none;
  transition: color 0.2s ease;
}

.announcements-page__breadcrumb a:hover {
  color: #fff;
}

.announcements-page__breadcrumb [aria-current="page"] {
  color: rgba(255, 255, 255, 0.75);
}

.announcements-page__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 0.75rem;
  margin-bottom: 0.875rem;
}

.announcements-page__tag {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.6rem;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1.4;
  color: #09eec2;
  background: #0997f733;
  border: 1px solid #0997f74d;
}

.announcements-page__date {
  font-size: 0.8125rem;
  line-height: 1.45;
  color: rgba(255, 255, 255, 0.45);
}

.announcements-page__article-title {
  margin: 0 0 0.75rem;
  font-size: clamp(1.375rem, 3.8vw, 1.875rem);
  font-weight: 700;
  line-height: 1.35;
  color: #fff;
}

.announcements-page__lead {
  margin: 0 0 clamp(1.25rem, 3vw, 1.75rem);
  max-width: 40rem;
  font-size: 0.875rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.55);
}

.announcements-page__card {
  border: 1px solid #FFFFFF1A;
  border-radius: 1rem;
  background: #FFFFFF0D;
  padding: clamp(1.25rem, 3vw, 2rem);
  margin-bottom: clamp(1.25rem, 3vw, 1.75rem);
}

.announcements-page__section {
  padding-top: clamp(1rem, 2.5vw, 1.35rem);
  margin-top: clamp(1rem, 2.5vw, 1.35rem);
}

.announcements-page__section:first-child {
  padding-top: 0;
  margin-top: 0;
}

.announcements-page__section-title {
  margin: 0 0 0.75rem;
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.45;
  color: #fff;
}

.announcements-page__prose {
  margin: 0;
  font-size: 1rem;
  line-height: 1.75;
  color: #D1D5DC;
}

.announcements-page__prose + .announcements-page__prose {
  margin-top: 0.75rem;
}

.announcements-page__prize-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.announcements-page__prize-list li + li {
  margin-top: 0.65rem;
}

.announcements-page__prize-list > li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.25rem 0.5rem;
  font-size: 0.875rem;
  line-height: 1.65;
}

.announcements-page__prize-name {
  flex: 0 0 auto;
  font-weight: 600;
  color: #D1D5DC;
}

.announcements-page__prize-detail {
  flex: 1 1 12rem;
  min-width: 0;
  color: #D1D5DC;
}

.announcements-page__attachment-wrap {
  margin-bottom: clamp(1.25rem, 3vw, 1.75rem);
}

.announcements-page__attachment-heading {
  margin: 0 0 0.65rem;
  font-size: 0.875rem;
  font-weight: 700;
  line-height: 1.45;
  color: rgba(255, 255, 255, 0.85);
}

.announcements-page__attachment {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1rem;
  padding: 0.875rem 1rem;
  border-radius: 0.75rem;
  border: 1px solid #FFFFFF1A;
  background: #FFFFFF0D;
  margin-bottom: 0;
}

.announcements-page__attachment-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 0.35rem;
  border: 1px solid #0997f74d;
  font-size: 0.625rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: #0997f7;
  background: #0997f733;
  flex-shrink: 0;
}

.announcements-page__attachment-body {
  flex: 1 1 12rem;
  min-width: 0;
}

.announcements-page__attachment-name {
  margin: 0 0 0.2rem;
  font-size: 0.875rem;
  font-weight: 600;
  line-height: 1.45;
  color: #ecf2f7;
  overflow-wrap: break-word;
}

.announcements-page__attachment-meta {
  margin: 0;
  font-size: 0.75rem;
  line-height: 1.45;
  color: rgba(255, 255, 255, 0.4);
}

.announcements-page__download {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-left: auto;
  padding: 0.5rem 1.1rem;
  border-radius: 10px;
  font-size: 0.8125rem;
  font-weight: 600;
  color: #0997f7;
  text-decoration: none;
  border: 1px solid #0997f74d;
  background: #0997f733;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.announcements-page__download:hover {
  color: #ecf2f7;
  border-color: rgba(9, 151, 247, 0.55);
  background: rgba(9, 151, 247, 0.35);
}

.announcements-page__back {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  width: min(100%, 14rem);
  margin: clamp(1.75rem, 4vw, 2.5rem) auto 0;
  padding: 0.65rem 1.25rem;
  border: 1px solid #FFFFFF33;
  border-radius: 999px;
  background: #FFFFFF1A;
  color: #FFFFFF;
  font-size: 1rem;
  line-height: 1.4;
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.announcements-page__back:hover {
  color: #ecf2f7;
  border-color: rgba(9, 151, 247, 0.5);
  background: rgba(9, 151, 247, 0.22);
}

.announcements-page__back:focus-visible {
  outline: 2px solid rgba(9, 151, 247, 0.55);
  outline-offset: 3px;
}

@media (max-width: 768px) {
  .announcements-page__download {
    margin-left: 0;
    width: 100%;
  }
}