:root {
  /* Founder承認後、この1値でTimeRexを含むキーカラーを変更できます。 */
  --key-color: #283640;
  --page-background: #f6f5f2;
  --surface: #ffffff;
  --text: #202326;
  --muted: #616970;
  --border: #dedfdd;
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: light;
  background: var(--page-background);
}

body {
  margin: 0;
  color: var(--text);
  background: var(--page-background);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans JP", sans-serif;
  line-height: 1.75;
}

.page-shell {
  width: min(100% - 32px, 960px);
  margin: 0 auto;
  padding: 64px 0 96px;
}

.introduction {
  max-width: 720px;
  margin: 0 auto 40px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 24px;
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  line-height: 1.35;
  letter-spacing: 0.01em;
}

.introduction p:not(.eyebrow) {
  margin-bottom: 12px;
  font-size: 1rem;
}

.reservation {
  min-height: 240px;
  padding: clamp(16px, 3vw, 32px);
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--surface);
}

.notice {
  max-width: 640px;
  margin: 32px auto;
  padding: 24px;
  border-left: 3px solid var(--key-color);
  background: var(--page-background);
}

.notice h2 {
  margin-bottom: 8px;
  font-size: 1.125rem;
}

.notice p {
  margin-bottom: 0;
  color: var(--muted);
}

@media (max-width: 640px) {
  .page-shell {
    width: min(100% - 24px, 960px);
    padding: 40px 0 64px;
  }

  .introduction {
    margin-bottom: 28px;
  }

  .reservation {
    padding: 12px;
    border-radius: 8px;
  }
}