* { box-sizing: border-box; }
body { margin: 0; padding: 2rem; color: #111; background: white; font-family: serif; }
main { max-width: 720px; margin: 0 auto; }
h1 { font-size: 2rem; }
h2 { font-size: 1.35rem; margin-top: 2rem; }
p, li { font-size: 1.05rem; line-height: 1.6; }
li { margin-bottom: 0.45rem; }
a { color: blue; }
.action { display: inline-block; border: 1px solid #111; background: #111; color: white; padding: 0.8rem 1rem; font: inherit; cursor: pointer; text-decoration: none; }
.action:hover { background: #333; }
.muted { color: #444; font-size: 0.95rem; }