:root {
  color-scheme: light dark;
  --ink: #111;
  --paper: #fbfaf7;
  --soft: rgb(17 17 17 / 0.7);
  --rule: rgb(17 17 17 / 0.15);
  --red: #e0261c;
  --yellow: #ffc20d;
  --blue: #1c4fa1;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #f2f0ea;
    --paper: #0d0d0d;
    --soft: rgb(242 240 234 / 0.7);
    --rule: rgb(242 240 234 / 0.15);
    --blue: #5487e6;
  }
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 17px/1.5 Futura, "Avenir Next", "Century Gothic", "Trebuchet MS", sans-serif;
}

main {
  max-width: 36rem;
  margin: 0 auto;
  padding: 48px 16px 64px;
}

h1,
h2 {
  text-transform: lowercase;
  line-height: 1.1;
}

h1 {
  font-size: 48px;
  margin: 24px 0 8px;
}

h2 {
  font-size: 20px;
  margin: 40px 0 8px;
  padding-top: 16px;
  border-top: 1px solid var(--rule);
}

a {
  color: var(--blue);
}

.lead {
  font-size: 20px;
}

.meta {
  color: var(--soft);
  font-size: 14px;
}

.icon {
  border-radius: 22%;
}

ul {
  padding-left: 20px;
}

.marks {
  list-style: none;
  padding: 0;
}

.marks li {
  display: flex;
  gap: 12px;
  align-items: baseline;
  margin: 12px 0;
}

.mark {
  flex: none;
  width: 14px;
  height: 14px;
  border: 1px solid var(--ink);
}

.circle {
  border-radius: 50%;
  background: linear-gradient(var(--red), color-mix(in srgb, var(--red), black 18%));
}

.triangle {
  width: 16px;
  height: 16px;
  border: 0;
  clip-path: polygon(50% 0, 100% 100%, 0 100%);
  background: linear-gradient(var(--blue), color-mix(in srgb, var(--blue), black 18%));
}

.square {
  background: linear-gradient(var(--yellow), color-mix(in srgb, var(--yellow), black 18%));
}