:root {
  --color-acento: #1f3a5f;
  --color-fondo: #f7f7f4;
  --color-texto: #222;
  --color-suave: #999;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--color-fondo);
  color: var(--color-texto);
  max-width: 820px;
  margin: 0 auto;
  padding: 60px 24px;
  line-height: 1.7;
}

/* Header */

header {
  margin-bottom: 4rem;
-bottom: 5rem;
    padding-left: 1rem;
    border-left: 4px solid var(--color-acento);
}

h1 {
  font-size: 3.2rem;
  margin-bottom: 0.4rem;
  letter-spacing: -0.03em;
}

.subtitle {
  font-size: 1.3rem;
  color: var(--color-suave);
  max-width: 40ch;
}

/* Secciones */

section {
  margin-bottom: 4.5rem;
}

h2 {
  font-size: 1.4rem;
  margin-bottom: 1rem;
  color: var(--color-acento);
  font-weight: 600;
}

/* Texto */

p {
  font-size: 1.05rem;
  max-width: 65ch;
}

/* Listas */

ul {
  padding-left: 1.2rem;
}

li {
  margin-bottom: 0.6rem;
}

/* Links */

a {
  color: var(--color-acento);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

a:hover {
  border-bottom: 1px solid var(--color-acento);
}

section:not(:last-child)::after {
  content: "";
  display: block;
  margin-top: 3rem;
  width: 60px;
  height: 1px;
  background-color: #ddd;
}
::selection {
  background-color: var(--color-acento);
  color: white;
}