:root {
  --ink: #111111;
  --muted: #4b4b4b;
  --line: #d8d8d8;
  --accent: #3a2528;
  --paper: #ffffff;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--paper);
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
  border-top: 3px solid var(--accent);
}

.site-header {
  height: 88px;
  border-bottom: 1px solid var(--line);
}

.page-shell {
  width: min(100% - 48px, 1068px);
  margin: 15px auto 0;
  text-align: center;
}

.notice-card {
  min-height: 108px;
  padding: 24px 22px;
  border: 1.5px solid var(--ink);
  border-radius: 11px;
  display: flex;
  align-items: center;
  text-align: left;
}

.notice-card h1 {
  margin: 0 0 6px;
  font-size: clamp(2rem, 4vw, 2.55rem);
  line-height: 1.05;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.notice-card p {
  margin: 0;
  color: var(--ink);
  font-size: 1.05rem;
  line-height: 1.35;
}

@media (max-width: 700px) {
  .site-header {
    height: 64px;
  }

  .page-shell {
    width: min(100% - 28px, 1068px);
    margin-top: 16px;
  }

  .notice-card {
    min-height: 132px;
    padding: 22px 18px;
  }
}