:root {
  color-scheme: dark;
  --bg: #0b0c0f;
  --fg: #e8eaed;
  --muted: #9aa0a6;
  --line: #1f232a;
  --accent: #c5c8ce;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--fg);
  font-family: "Helvetica Neue", Helvetica, Arial, system-ui, sans-serif;
}

body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 2rem;
  background:
    radial-gradient(ellipse 80% 50% at 50% -20%, #161922 0%, transparent 55%),
    var(--bg);
}

.wrap {
  width: min(28rem, 100%);
  text-align: center;
  padding: 2.5rem 1.5rem;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.mark {
  margin: 0 0 1rem;
  font-size: clamp(1.5rem, 4vw, 1.85rem);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg);
}

.tagline {
  margin: 0 0 1.75rem;
  font-size: 0.95rem;
  line-height: 1.5;
  color: var(--muted);
  font-weight: 400;
  letter-spacing: 0.02em;
}

.contact {
  margin: 0;
  font-size: 0.9rem;
}

.contact a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.15s ease, color 0.15s ease;
}

.contact a:hover,
.contact a:focus {
  color: #fff;
  border-bottom-color: #fff;
  outline: none;
}

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