:root {
  --bg: #0e0d13;
  --bg-glow: #1c1830;
  --fg: #f2f3f5;
  --muted: #9aa0aa;
  --accent: #7059BC;
  --card: rgba(255, 255, 255, 0.04);
  --border: rgba(255, 255, 255, 0.10);
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f7f6fb;
    --bg-glow: #ffffff;
    --fg: #14161a;
    --muted: #5b616b;
    --accent: #7059BC;
    --card: rgba(0, 0, 0, 0.03);
    --border: rgba(0, 0, 0, 0.10);
  }
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html, body { height: 100%; }

body {
  min-height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  padding: 2rem;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--fg);
  background:
    radial-gradient(60rem 40rem at 50% -10%, var(--bg-glow), transparent 60%),
    var(--bg);
  text-align: center;
}

.wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  max-width: 30rem;
  width: 100%;
}

.mark img {
  display: block;
  width: 112px;
  height: 112px;
  border-radius: 24px;
  box-shadow: 0 12px 40px rgba(112, 89, 188, 0.45);
}

h1 {
  font-size: clamp(2.5rem, 8vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
}

.tagline {
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.6;
}

.badge {
  display: inline-block;
  padding: 0.35rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--card);
  color: var(--muted);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

footer {
  color: var(--muted);
  font-size: 0.8rem;
}