:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang TC", "Noto Sans TC", sans-serif;
  color: #f6f2e7;
  background: #0a0f0c;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-width: 320px;
  min-height: 100%;
  margin: 0;
}

body {
  min-height: 100vh;
  display: grid;
  place-items: center;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 85% 4%, rgba(148, 217, 162, .17), transparent 28rem),
    radial-gradient(circle at 7% 86%, rgba(235, 200, 123, .07), transparent 24rem),
    linear-gradient(160deg, #0d140f, #080b09 75%);
}

body::before {
  position: fixed;
  z-index: -1;
  inset: 0;
  content: "";
  opacity: .18;
  background-image:
    linear-gradient(rgba(255, 255, 255, .028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .028) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to bottom, #000, transparent 75%);
}

.maintenance-shell {
  width: min(680px, calc(100% - 40px));
  padding: 40px 0;
}

.maintenance-card {
  position: relative;
  overflow: hidden;
  padding: clamp(28px, 6vw, 64px);
  border: 1px solid rgba(148, 217, 162, .28);
  border-radius: 30px;
  background:
    radial-gradient(circle at 100% 0, rgba(148, 217, 162, .15), transparent 19rem),
    rgba(18, 27, 22, .88);
  box-shadow: 0 35px 100px rgba(0, 0, 0, .38);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
}

.maintenance-card::after {
  position: absolute;
  width: 300px;
  height: 300px;
  top: -160px;
  right: -120px;
  content: "";
  border: 1px solid rgba(148, 217, 162, .14);
  border-radius: 50%;
  box-shadow: 0 0 0 45px rgba(148, 217, 162, .025);
  pointer-events: none;
}

.brand-mark {
  width: 64px;
  height: 64px;
  display: grid;
  place-items: center;
  margin-bottom: 30px;
  border: 1px solid rgba(148, 217, 162, .42);
  border-radius: 20px;
  color: #c0f2c6;
  font-size: 40px;
  line-height: 1;
}

.eyebrow {
  margin: 0 0 15px;
  color: #94d9a2;
  font-size: 10px;
  font-weight: 850;
  letter-spacing: .17em;
}

h1 {
  max-width: 590px;
  margin: 0;
  font-size: clamp(35px, 7vw, 65px);
  line-height: 1.04;
  letter-spacing: -.065em;
}

.lead {
  max-width: 560px;
  margin: 22px 0 0;
  color: #c3cec5;
  font-size: 16px;
  line-height: 1.8;
}

.notice {
  display: grid;
  gap: 4px;
  margin-top: 25px;
  padding: 15px 16px;
  border-left: 3px solid #ebc87b;
  border-radius: 0 12px 12px 0;
  background: rgba(235, 200, 123, .07);
}

.notice strong {
  color: #ebc87b;
  font-size: 12px;
}

.notice span {
  color: #aebbb0;
  font-size: 11px;
}

.primary-button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-top: 29px;
  padding: 12px 18px;
  border-radius: 999px;
  background: #c0f2c6;
  color: #07110a;
  font-size: 14px;
  font-weight: 850;
  text-decoration: none;
  transition: transform .2s cubic-bezier(.2, .8, .2, 1), background .2s ease;
}

.primary-button:hover {
  background: #d8f9dc;
  transform: translateY(-2px);
}

.primary-button:active {
  transform: scale(.98);
}

.footnote {
  margin: 23px 0 0;
  color: #829087;
  font-size: 11px;
}

.footnote strong {
  color: #c3cec5;
}

@media (prefers-reduced-motion: reduce) {
  .primary-button {
    transition: none;
  }
}

@media (prefers-reduced-transparency: reduce) {
  .maintenance-card {
    background: #121b16;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
}

@media (max-width: 560px) {
  .maintenance-shell {
    width: min(100% - 28px, 680px);
  }

  .maintenance-card {
    border-radius: 22px;
  }

  .lead {
    font-size: 14px;
  }

  .primary-button {
    width: 100%;
    justify-content: center;
  }
}