:root {
  --bg: #0f1117;
  --card: #171a24;
  --text: #e8e9ee;
  --muted: #9aa0b4;
  --accent: #6ea8fe;
  --accent-visited: #b39ddb;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  padding: 2rem;
}
.card {
  max-width: 620px;
  width: 100%;
  background: var(--card);
  border-radius: 16px;
  padding: 2.5rem;
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}
h1 {
  margin: 0 0 0.25rem 0;
  font-size: 2rem;
  letter-spacing: -0.02em;
}
.tagline {
  color: var(--accent);
  font-size: 1.05rem;
  margin-bottom: 1.5rem;
}
p {
  line-height: 1.65;
  color: var(--muted);
  margin: 0 0 1rem 0;
}
p a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 0.15em;
  text-decoration-color: rgba(110, 168, 254, 0.4);
}
p a:visited {
  color: var(--accent-visited);
  text-decoration-color: rgba(179, 157, 219, 0.4);
}
p a:hover {
  text-decoration-color: currentColor;
}
.links {
  margin-top: 2rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}
.links a {
  color: var(--text);
  text-decoration: none;
  padding: 0.5rem 1rem;
  border: 1px solid #2a2e3d;
  border-radius: 999px;
  font-size: 0.9rem;
  transition: border-color 0.2s, color 0.2s;
}
.links a:hover {
  border-color: var(--accent);
  color: var(--accent);
}
footer {
  margin-top: 2rem;
  font-size: 0.8rem;
  color: #565c70;
}