:root {
  color-scheme: light dark;
  --surface: #f3f6fa;
  --text: #171a20;
  --muted: #5d6675;
  --accent: #1757c8;
  --focus: #0c68ee;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: var(--surface);
}

body {
  min-width: 320px;
  min-height: 100dvh;
  margin: 0;
  color: var(--text);
  background: var(--surface);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

.announcement {
  width: min(100% - 40px, 1080px);
  min-height: 100dvh;
  margin: 0 auto;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 0;
  padding: 64px 0;
  text-align: center;
}

h1 {
  margin: 0 0 48px;
  font-size: clamp(3.5rem, 9vw, 8.5rem);
  font-weight: 650;
  line-height: 0.9;
  letter-spacing: -0.075em;
}

.statement {
  display: grid;
  gap: 12px;
}

.statement p {
  margin: 0;
  max-width: 58rem;
  color: var(--muted);
  font-size: clamp(1rem, 1.45vw, 1.3rem);
  font-weight: 450;
  line-height: 1.65;
  letter-spacing: -0.015em;
}

.statement p[lang="zh-CN"] {
  color: var(--text);
  font-size: clamp(1.1rem, 1.75vw, 1.55rem);
  font-weight: 560;
  letter-spacing: 0;
}

.contact {
  margin: 44px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 500;
  line-height: 1.5;
}

.contact a {
  position: relative;
  color: var(--accent);
  text-decoration: none;
  text-underline-offset: 0.24em;
}

.contact a:hover {
  text-decoration: underline;
}

.contact a:focus-visible {
  border-radius: 4px;
  outline: 3px solid color-mix(in srgb, var(--focus) 28%, transparent);
  outline-offset: 4px;
}

@media (max-width: 640px) {
  .announcement {
    width: min(100% - 32px, 1080px);
    padding: 48px 0;
  }

  h1 {
    margin-bottom: 36px;
    letter-spacing: -0.065em;
  }

  .statement {
    gap: 10px;
  }

  .statement p {
    line-height: 1.55;
  }

  .contact {
    margin-top: 36px;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --surface: #11151c;
    --text: #edf1f7;
    --muted: #aab4c3;
    --accent: #8bb7ff;
    --focus: #76aaff;
  }
}