:root {
  --bg: #ffffff;
  --fg: #111111;
  --muted: #8a8a8a;
}

* { box-sizing: border-box; }

html {
  font-size: 13px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: Helvetica, Arial, sans-serif;
  font-size: 1rem;
  line-height: 1.5;
  font-weight: normal;
}

/* every element uses the same size and weight */
h1, h2, h3, p, ul, li, a, nav, main {
  font-size: 1rem;
  font-weight: normal;
  margin: 0;
  padding: 0;
}

a,
a:link,
a:visited,
a:hover,
a:active {
  color: var(--fg);
  text-decoration: none;
}

a {
  transition: opacity 0.15s ease;
}

a:hover { opacity: 0.5; }

a:focus-visible {
  outline: 1px solid var(--fg);
  outline-offset: 2px;
}

nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 220px;
  padding: 30px 0 0 30px;
}

nav ul,
nav li {
  list-style: none;
}

nav li::marker { content: ""; }

/* three lines of space under the name */
nav li:first-child { margin-bottom: 4.5em; }

nav a[aria-current="page"] { color: var(--muted); }

main {
  margin-left: 220px;
  padding: 30px 30px 60px 0;
  max-width: 760px;
}

main p + p,
main p + ul,
main ul + p { margin-top: 1.5em; }

main ul { list-style: none; }

.empty { color: var(--muted); }

@media (max-width: 640px) {
  nav {
    position: static;
    width: auto;
    padding: 20px 20px 0;
  }
  main {
    margin-left: 0;
    padding: 30px 20px 40px;
  }
}