:root {
  --paper: #f3eee4;
  --ink: #1b2420;
  --muted: #5c6560;
  --rule: #cfc6b6;
  --oxide: #8c3c24;
}

* {
  box-sizing: border-box;
}

html {
  font-size: 18px;
}

body {
  margin: 0;
  min-height: 100vh;
  background: #d9d1c3;
  color: var(--ink);
  font-family: "Palatino Linotype", Palatino, "Book Antiqua", Georgia, serif;
  line-height: 1.5;
}

.sheet {
  max-width: 40rem;
  margin: 0 auto;
  padding: 3.5rem 1.5rem 4rem;
  background: var(--paper);
  min-height: 100vh;
  border-left: 1px solid var(--rule);
  border-right: 1px solid var(--rule);
}

header {
  border-bottom: 1px solid var(--ink);
  padding-bottom: 1.25rem;
  margin-bottom: 2rem;
}

.mark {
  margin: 0;
  font-size: 2rem;
  letter-spacing: 0.02em;
  font-weight: 600;
}

.tag {
  margin: 0.35rem 0 0;
  color: var(--oxide);
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-family: "Segoe UI", Helvetica, Arial, sans-serif;
}

.lede {
  font-size: 1.15rem;
  margin: 0 0 2.5rem;
}

section {
  margin-bottom: 2rem;
}

h2 {
  margin: 0 0 0.6rem;
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-family: "Segoe UI", Helvetica, Arial, sans-serif;
  color: var(--oxide);
  font-weight: 600;
}

ol {
  margin: 0 0 1rem;
  padding-left: 1.2rem;
}

li {
  margin-bottom: 0.4rem;
}

p {
  margin: 0 0 0.8rem;
}

a {
  color: var(--ink);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.15em;
}

a:hover {
  color: var(--oxide);
}

.fine,
footer {
  color: var(--muted);
  font-size: 0.85rem;
}

footer {
  margin-top: 3rem;
  padding-top: 1rem;
  border-top: 1px solid var(--rule);
}

footer p {
  margin: 0;
}

@media (min-width: 720px) {
  body {
    padding: 2rem 0;
    background:
      radial-gradient(ellipse at top, #e7dfd1 0%, #cfc4b3 100%);
  }

  .sheet {
    min-height: auto;
    box-shadow: 0 18px 50px rgba(40, 32, 20, 0.12);
  }
}