body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #172033;
  background: #f6f8fb;
}

/* ログイン済みの短いリダイレクト中にランディングが一瞬見えないようにする */
html:not([data-site-auth-ready="1"]) main.site-home {
  visibility: hidden;
}

.site-home {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px 16px;
}

.site-panel {
  width: min(880px, 100%);
  background: #ffffff;
  border: 1px solid #dbe3ef;
  border-radius: 8px;
  padding: 40px;
  box-shadow: 0 18px 48px rgba(15, 23, 42, 0.08);
}

.site-brand {
  margin: 0 0 12px;
  font-size: clamp(2rem, 5vw, 3.5rem);
  line-height: 1.1;
  letter-spacing: 0;
}

.site-lead {
  margin: 0 0 24px;
  color: #475569;
  font-size: 1.08rem;
  line-height: 1.8;
}

.site-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 28px 0;
}

.site-button,
.site-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 8px;
  font-weight: 700;
  text-decoration: none;
}

.site-button {
  color: #ffffff;
  background: #2563eb;
}

.site-link {
  color: #1d4ed8;
  background: #eff6ff;
}

.site-details {
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid #dbe3ef;
  color: #475569;
  line-height: 1.8;
}

.site-details h2 {
  margin: 0 0 8px;
  color: #172033;
  font-size: 1.2rem;
}