:root {
  --bg: #0d1418;
  --bg-accent: #102a30;
  --fg: #e8f1f2;
  --fg-dim: #7e9499;
  --teal: #2dd4bf;
  --teal-glow: rgba(45, 212, 191, 0.35);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
  color: var(--fg);
  background:
    radial-gradient(ellipse at 50% -10%, var(--bg-accent) 0%, var(--bg) 55%) no-repeat,
    var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
}

main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 24px;
}

.mark {
  width: 96px;
  height: 96px;
  border-radius: 22px;
  box-shadow: 0 18px 60px var(--teal-glow);
  margin-bottom: 28px;
}

h1 {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue", Arial, sans-serif;
  font-size: clamp(48px, 9vw, 84px);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin: 0 0 14px;
  background: linear-gradient(180deg, #ffffff 0%, #b9d6da 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.tagline {
  font-size: clamp(17px, 2.2vw, 21px);
  line-height: 1.45;
  color: var(--fg-dim);
  margin: 0 0 36px;
  max-width: 32ch;
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--fg);
  padding: 10px 18px;
  border-radius: 999px;
  border: 1px solid rgba(45, 212, 191, 0.35);
  background: rgba(45, 212, 191, 0.08);
  margin: 0;
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 0 0 var(--teal-glow);
  animation: pulse 2.2s ease-out infinite;
}

@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(45, 212, 191, 0.55); }
  70%  { box-shadow: 0 0 0 12px rgba(45, 212, 191, 0); }
  100% { box-shadow: 0 0 0 0 rgba(45, 212, 191, 0); }
}

footer {
  padding: 20px 24px;
  text-align: center;
  font-size: 12px;
  color: var(--fg-dim);
}

@media (prefers-reduced-motion: reduce) {
  .dot { animation: none; }
}