* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  width: 100%;
  min-height: 100%;
  background: #ffffff;
  color: #000000;
  font-family: "Courier New", Courier, monospace;
}

body {
  display: grid;
  place-items: center;
  min-height: 100dvh;
  padding: 16px;
}

.rules-shell {
  width: min(760px, 100%);
  border: 2px solid #000000;
  padding: 14px;
  background: #ffffff;
}

h1 {
  margin: 0;
  font-size: 26px;
  line-height: 1.2;
}

.back-link {
  margin: 8px 0 12px;
}

.back-link a,
a {
  color: #000000;
  text-decoration: underline;
}

.card {
  border: 2px solid #000000;
  padding: 10px;
  margin-top: 10px;
  background: #ffffff;
}

h2 {
  margin: 0 0 8px;
  font-size: 18px;
}

p {
  margin: 0 0 8px;
  line-height: 1.45;
}

p:last-child {
  margin-bottom: 0;
}

ul {
  margin: 0;
  padding-left: 20px;
  line-height: 1.45;
}

li + li {
  margin-top: 4px;
}

li .swatch {
  width: 11px;
  height: 11px;
  border: 1px solid #000000;
  display: inline-block;
  margin-right: 6px;
  vertical-align: -1px;
}

.swatch-green {
  background: rgb(0, 170, 0);
}

.swatch-blue {
  background: rgb(0, 0, 255);
}

.swatch-red {
  background: rgb(255, 0, 0);
}

.swatch-black {
  background: rgb(0, 0, 0);
}

.swatch-gold {
  background: rgb(212, 175, 55);
}

.label-green {
  color: rgb(0, 130, 0);
}

.label-blue {
  color: rgb(0, 0, 190);
}

.label-red {
  color: rgb(180, 0, 0);
}

.label-black {
  color: #000000;
}

.label-gold {
  color: rgb(160, 120, 20);
}

@media (max-width: 520px) {
  .rules-shell {
    padding: 10px;
  }

  h1 {
    font-size: 22px;
  }

  h2 {
    font-size: 16px;
  }
}