:root {
  --bg: #f7f9fc;
  --fg: #1e2f4d;
  --muted: #5a6b85;
  --accent: #1389f5;
  --rule: #dde4ee;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1726;
    --fg: #e6ecf5;
    --muted: #9aa9c0;
    --accent: #4aa8ff;
    --rule: #26344d;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

.wrap {
  max-width: 42rem;
  margin: 0 auto;
  padding: 3rem 1.25rem;
}

header a {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: inherit;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.25rem;
}

header img { width: 2.5rem; height: 2.5rem; }

.hero {
  min-height: 70vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.hero img { width: 9rem; height: 9rem; }
.hero h1 { font-size: 2.5rem; margin: 1rem 0 0; letter-spacing: -0.02em; }

h1 { line-height: 1.2; }
h2 { font-size: 1.15rem; margin-top: 2rem; }

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

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

footer {
  margin-top: 3rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--rule);
  font-size: 0.9rem;
  color: var(--muted);
}

footer a { color: inherit; }