body {
  margin: 0;
  color: #17202b;
  background: #faf8f3;
  font: 1rem/1.7 system-ui, sans-serif;
}
main { max-width: 48rem; margin: auto; padding: 2rem 1.25rem 4rem; }
nav { margin-bottom: 2rem; }
a { color: #174d75; text-underline-offset: 0.15em; }
a:focus-visible { outline: 3px solid #174d75; outline-offset: 3px; }
h1, h2, h3 { line-height: 1.3; }
h2 { margin-top: 2rem; }
aside { padding: 1rem; border: 2px solid #855400; background: #fff0c9; }
p, li { overflow-wrap: anywhere; }