:root {
  --bg: #faf8f5;
  --ink: #1c1b1a;
  --ink-soft: #55524e;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.125rem;
  line-height: 1.65;
}

main {
  max-width: 64ch;
  margin: 0 auto;
  padding: 5rem 1.5rem 4rem;
}

.mast {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1.25rem;
  margin: 0 0 2.75rem;
}

p.site-name {
  margin: 0;
  color: var(--ink);
  font-size: 1.35rem;
  line-height: 1.2;
}

h1 {
  font-size: 2rem;
  line-height: 1.25;
  font-weight: 600;
  margin: 0 0 2.5rem;
  letter-spacing: -0.01em;
}

p {
  margin: 0 0 1.25rem;
}

p.sign {
  margin-top: 2rem;
}

section[aria-label="Join"] {
  margin-top: 3.5rem;
}

.join {
  display: inline-block;
  padding: 0.75rem 1.75rem;
  border: 2px solid var(--ink);
  color: var(--ink);
  text-decoration: none;
  font-family: inherit;
  font-size: 1.0625rem;
}

.join:hover {
  background: var(--ink);
  color: var(--bg);
}

.join:focus-visible {
  outline: 3px solid var(--ink);
  outline-offset: 3px;
}

.join-mast {
  padding: 0.4rem 0.9rem;
  font-size: 1rem;
}

@media (max-width: 480px) {
  main {
    padding-top: 3rem;
  }

  h1 {
    font-size: 1.625rem;
  }
}