:root {
  color-scheme: light;
  --background: #f5f7fa;
  --surface: #ffffff;
  --text: #263445;
  --text-muted: #68778a;
  --accent: #58789b;
  --border: #e4e9ef;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  padding: 32px 20px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--background);
  color: var(--text);
  font-family:
    -apple-system,
    BlinkMacSystemFont,
    "Noto Sans JP",
    "Hiragino Kaku Gothic ProN",
    "Yu Gothic",
    Meiryo,
    sans-serif;
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

.maintenance {
  width: 100%;
  max-width: 680px;
  padding: 64px 48px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: 0 8px 32px rgb(38 52 69 / 5%);
  text-align: center;
}

.maintenance__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 96px;
  height: 96px;
  margin: 0 auto 24px;
  border-radius: 50%;
  background: #edf2f7;
  color: var(--accent);
}

.maintenance__label {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.18em;
}

.maintenance h1 {
  margin: 0;
  font-size: clamp(1.4rem, 4vw, 1.9rem);
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: 0.02em;
}

.maintenance__message {
  margin-top: 32px;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.maintenance__message p {
  margin: 0 0 12px;
}

.maintenance__divider {
  width: 48px;
  height: 2px;
  margin: 32px auto 24px;
  background: var(--border);
}

.maintenance__note {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.footer {
  margin-top: 24px;
  color: #8b96a5;
  font-size: 0.75rem;
  text-align: center;
}

@media (max-width: 600px) {
  body {
    padding: 20px 16px;
  }

  .maintenance {
    padding: 44px 24px;
  }

  .maintenance__icon {
    width: 80px;
    height: 80px;
    margin-bottom: 20px;
  }

  .maintenance__icon svg {
    width: 52px;
    height: 52px;
  }

  .maintenance__message {
    margin-top: 24px;
    font-size: 0.9rem;
  }

  .desktop-only {
    display: none;
  }
}