* { box-sizing: border-box; }
body { margin: 0; background: #eef6ff; color: #10243f; font: 1rem/1.7 Arial, Helvetica, sans-serif; }
main { max-width: 960px; margin: 2rem auto; padding: clamp(1rem, 4vw, 3rem); background: white; border-radius: 1rem; }
a { color: #155c99; }
pre { white-space: pre-wrap; overflow-wrap: anywhere; font: inherit; }
button { padding: .75rem 1.25rem; color: white; background: #155c99; border: 0; border-radius: .5rem; cursor: pointer; }