* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  line-height: 1.7;
  color: #333;
  max-width: 720px;
  margin: 0 auto;
  padding: 40px 24px;
  background: #fafafa;
}
h1 { font-size: 28px; margin-bottom: 8px; color: #1a1a1a; }
.updated { color: #888; font-size: 14px; margin-bottom: 32px; }
h2 { font-size: 18px; margin: 28px 0 12px; color: #1a1a1a; }
p, li { font-size: 15px; margin-bottom: 12px; }
ul { padding-left: 24px; }
a { color: #1B62C2; }
.back { margin-top: 40px; }
.logo { width: 120px; height: 120px; border-radius: 50%; display: block; margin: 0 auto 24px; }
.center { text-align: center; }