:root {
  --text: #1c1c1e;
  --muted: #6c6c70;
  --background: #f2f2f7;
  --card: #ffffff;
  --blue: #0047ff;
  --line: #e5e5ea;
}
@media (prefers-color-scheme: dark) {
  :root {
    --text: #f2f2f7;
    --muted: #a1a1a6;
    --background: #0b1029;
    --card: #161d3d;
    --blue: #5b8cff;
    --line: #2a335c;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--background);
  color: var(--text);
  font: 17px/1.55 -apple-system, BlinkMacSystemFont, "SF Pro Text", system-ui, sans-serif;
}
main {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 16px 64px;
}
header { display: flex; align-items: center; gap: 16px; margin-bottom: 32px; }
header img { border-radius: 16px; }
h1 { margin: 0; font-size: 32px; letter-spacing: -0.4px; }
h2 { font-size: 26px; margin: 0 0 8px; }
h3 { font-size: 19px; margin: 28px 0 6px; }
h4 { font-size: 17px; margin: 20px 0 4px; }
p { margin: 0 0 12px; }
.muted { color: var(--muted); font-size: 15px; }
a { color: var(--blue); }
.cta { margin: 20px 0 8px; }
.button {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 999px;
  background: var(--blue);
  color: #fff;
  font-weight: 600;
  text-decoration: none;
}
hr { border: 0; border-top: 1px solid var(--line); margin: 48px 0; }
footer { margin-top: 48px; color: var(--muted); font-size: 15px; }