:root {
  --notice-surface: #f7f7f8;
  --notice-border: #e7e7e9;
  --notice-muted: #66666b;
}

body {
  color: #151515;
  font-family: "IBM Plex Sans Thai", "Inter", sans-serif;
}

.announcement-main {
  min-height: calc(100dvh - 180px);
  padding: 9.5rem 1.5rem 6rem;
}

.announcement-article {
  width: min(100%, 760px);
  margin: 0 auto;
}

.announcement-label {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin-bottom: 1.5rem;
  color: var(--red);
  font-family: "Chillax-Variable", "IBM Plex Sans Thai", sans-serif;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.announcement-label::before {
  width: 0.5rem;
  height: 0.5rem;
  background: var(--red);
  border-radius: 50%;
  content: "";
}

.announcement-article h1 {
  max-width: 700px;
  margin: 0;
  color: #0a0a0a;
  font-family: "Chillax-Variable", "IBM Plex Sans Thai", sans-serif;
  font-size: clamp(2.35rem, 7vw, 4.75rem);
  font-weight: 600;
  letter-spacing: -0.055em;
  line-height: 1.06;
}

.announcement-meta {
  margin: 1.5rem 0 0;
  color: var(--notice-muted);
  font-size: 0.95rem;
}

.announcement-rule {
  height: 1px;
  margin: 3rem 0;
  background: var(--notice-border);
}

.announcement-copy {
  color: #303034;
  font-size: clamp(1.05rem, 2vw, 1.16rem);
  line-height: 1.85;
}

.announcement-copy > p {
  margin: 0 0 1.5rem;
}

.timeline {
  display: grid;
  gap: 1px;
  margin: 2.5rem 0;
  overflow: hidden;
  background: var(--notice-border);
  border: 1px solid var(--notice-border);
  border-radius: 20px;
}

.timeline-item {
  display: grid;
  grid-template-columns: 9.5rem 1fr;
  gap: 1.5rem;
  padding: 1.5rem;
  background: var(--notice-surface);
}

.timeline-date {
  color: #111;
  font-weight: 600;
}

.timeline-item p {
  margin: 0;
}

.closing-note {
  margin-top: 3rem;
  padding-left: 1.25rem;
  border-left: 3px solid var(--red);
}

.closing-note strong {
  display: block;
  margin-bottom: 0.35rem;
  color: #111;
  font-family: "Chillax-Variable", "IBM Plex Sans Thai", sans-serif;
  font-size: 1.35rem;
}

.signature {
  margin-top: 3rem;
  color: #111;
  font-weight: 600;
}

.back-link {
  display: inline-flex;
  margin-top: 4rem;
  color: #111;
  font-weight: 600;
  text-decoration: none;
}

.back-link:hover {
  color: var(--red);
}

@media (max-width: 600px) {
  .announcement-main {
    padding: 7.5rem 1.25rem 4rem;
  }

  .announcement-rule {
    margin: 2.25rem 0;
  }

  .timeline-item {
    grid-template-columns: 1fr;
    gap: 0.45rem;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --notice-surface: #111113;
    --notice-border: #29292d;
    --notice-muted: #a2a2a8;
  }

  body,
  .announcement-article h1,
  .timeline-date,
  .closing-note strong,
  .signature,
  .back-link {
    color: #f5f5f7;
  }

  .announcement-copy {
    color: #d1d1d6;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}