:root {
  --primary: #073b66;
  --secondary: #0e7490;
  --accent: #20a7c9;
  --text: #233142;
  --muted: #5f7182;
  --line: #d6e2ea;
  --surface: #ffffff;
  --status-bg: #f1f7fa;
  --shadow: 0 24px 70px rgba(7, 59, 102, 0.14);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 12% 16%, rgba(32, 167, 201, 0.13), transparent 28rem),
    radial-gradient(circle at 90% 86%, rgba(7, 59, 102, 0.09), transparent 30rem),
    linear-gradient(145deg, #f7fbfd 0%, #edf5f8 100%);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Yu Gothic Medium", "Yu Gothic", Meiryo, sans-serif;
  line-height: 1.9;
  overflow-wrap: anywhere;
}

.maintenance-page {
  display: grid;
  min-height: 100vh;
  padding: clamp(20px, 6vw, 72px);
  place-items: center;
}

.maintenance-card {
  position: relative;
  width: min(100%, 880px);
  margin: 0;
  padding: clamp(38px, 7vw, 72px) clamp(24px, 7vw, 72px);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.95);
  border-radius: clamp(18px, 3vw, 28px);
  background: rgba(255, 255, 255, 0.96);
  box-shadow: var(--shadow);
}

.maintenance-card::before {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 5px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  content: "";
}

.maintenance-header {
  padding-bottom: clamp(24px, 4vw, 34px);
  border-bottom: 1px solid var(--line);
  text-align: center;
}

.maintenance-kicker {
  margin: 0 0 8px;
  color: var(--secondary);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.22em;
}

.maintenance-header h1 {
  margin: 0;
  color: var(--primary);
  font-size: clamp(1.75rem, 4.2vw, 2.8rem);
  line-height: 1.4;
  letter-spacing: 0.02em;
}

.maintenance-message {
  margin-top: clamp(26px, 5vw, 40px);
}

.maintenance-message > p {
  margin: 0;
}

.maintenance-message > p + p {
  margin-top: 1.15em;
}

.maintenance-status {
  margin: clamp(28px, 5vw, 38px) 0;
  padding: clamp(18px, 3vw, 24px) clamp(20px, 4vw, 30px);
  border-left: 4px solid var(--accent);
  border-radius: 0 10px 10px 0;
  background: var(--status-bg);
}

.maintenance-status h2 {
  margin: 0 0 4px;
  color: var(--primary);
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.6;
}

.maintenance-status p {
  margin: 0;
  color: var(--text);
  font-size: clamp(1.1rem, 2.5vw, 1.3rem);
  font-weight: 700;
  line-height: 1.5;
}

@media (max-width: 640px) {
  .maintenance-page {
    padding: 16px;
    place-items: start center;
  }

  .maintenance-card {
    padding: 36px 22px 42px;
  }

  .maintenance-message {
    font-size: 0.94rem;
  }

  .maintenance-status {
    border-left-width: 3px;
  }
}