:root {
  --fondo: #faf8f5;
  --texto: #2b2724;
  --suave: #6b635c;
  --linea: #e4ddd4;
}
@media (prefers-color-scheme: dark) {
  :root { --fondo: #1d1b19; --texto: #eeeae5; --suave: #aaa198; --linea: #3a3632; }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  padding-inline: 20px;
  background: var(--fondo);
  color: var(--texto);
  font: 17px/1.6 Georgia, "Times New Roman", serif;
}
main { max-width: 42rem; margin: 0 auto; padding-block: 12vh 4rem; }
h1 { font-weight: normal; font-size: 2rem; line-height: 1.2; margin: 0 0 .5rem; letter-spacing: .01em; }
h2 { font-weight: normal; font-size: 1.25rem; margin: 2.2rem 0 .5rem; }
p, li { margin: 0 0 .8rem; }
ul { padding-left: 1.2rem; }
.sub { color: var(--suave); margin-bottom: 2.5rem; }
a { color: inherit; text-underline-offset: 3px; }
footer { border-top: 1px solid var(--linea); margin-top: 3rem; padding-top: 1rem; color: var(--suave); font-size: .9rem; }
footer a { margin-right: 1rem; }