* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg: #f0f0f0;
  --text: #0f0f0f;
  --neobox: #4b8bfb;
  --neobox-faded: #769bdb;
  --item-gap: 16px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f0f0f;
    --text: #f0f0f0;
  }
}

body {
  font-family: Arial, Helvetica, sans-serif;
  background-color: var(--bg);
  color: var(--text);
  min-height: 100dvh;
}

main {
  min-height: 100dvh;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--item-gap);
}

ul {
  display: flex;
  gap: var(--item-gap);
  font-size: 2rem;
  list-style-type: none;
}

li {
  display: flex;
}

li + li::before {
  content: "|";
  padding-right: var(--item-gap);
}

nav a {
  color: var(--text);
  text-decoration: none;
}

nav a:hover {
  text-decoration: underline;
}

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

#neobox {
  color: var(--neobox);
}

.line-through {
  text-decoration: line-through;
  text-decoration-color: var(--neobox-faded);
}

.underline-dotted {
  text-decoration: underline dotted;
  text-decoration-color: var(--neobox-faded);
  cursor: help;
  user-select: none;
}