:root {
  --bg: #f7faf7;
  --fg: #1c2420;
  --muted: #5c6a62;
  --accent: #2e7d4f;
  --card-bg: #ffffff;
  --card-border: #e2e8e3;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #131a16;
    --fg: #e8efe9;
    --muted: #9bab9f;
    --accent: #5cbf8a;
    --card-bg: #1b2420;
    --card-border: #2a362f;
  }
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--fg);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  line-height: 1.6;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 3rem 2.5rem;
  max-width: 26rem;
  width: 100%;
  text-align: center;
}

.logo { margin-bottom: 1rem; }

h1 {
  font-size: 2rem;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

.tagline {
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 0.75rem;
}

p { color: var(--muted); }

a { color: var(--accent); }