:root {
  --bg: #ffffff;
  --text: #1c1c1e;
  --muted: #6e6e73;
  --accent: #2aabee;
  --accent-text: #ffffff;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111214;
    --text: #f2f2f7;
    --muted: #98989f;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--text);
  font: 18px/1.6 -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  max-width: 34rem;
  margin: 0 auto;
  padding: 3rem 1rem;
  text-align: center;
}

.logo {
  width: 72px;
  height: 72px;
}

.logo rect {
  fill: var(--accent);
}

.logo path {
  stroke: #fff;
  stroke-width: 2.5;
  stroke-linecap: round;
}

h1 {
  margin: 1rem 0 0.5rem;
  font-size: 2.5rem;
  line-height: 1.1;
}

p {
  margin: 0 0 2rem;
}

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

.button {
  display: inline-block;
  padding: 0.8rem 1.6rem;
  border-radius: 999px;
  background: var(--accent);
  color: var(--accent-text);
  font-weight: 600;
  text-decoration: none;
}

.button:hover {
  filter: brightness(1.08);
}

footer {
  padding: 1.5rem 1rem;
  text-align: center;
  font-size: 0.9rem;
  color: var(--muted);
}