:root {
  --ink: #111111;
  --ink-body: #6b6b6b;
  --ink-secondary: #9a9a9a;
  --paper: #fafafa;

  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Inter",
    "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, monospace;

  --measure: 30rem;
  --type-body: 0.72rem;
  --type-small: 0.656rem;

  --lead: 400ms;
  --stagger: 110ms;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 100%;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink-body);
  font-family: var(--font-sans);
  font-size: var(--type-body);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.page {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 9vh 1.5rem 16vh;
}

.reveal {
  animation: appear 500ms ease-out forwards;
  animation-delay: calc(var(--lead) + var(--step) * var(--stagger));
}

@keyframes appear {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.masthead {
  margin-bottom: 2.25rem;
}

.masthead h1 {
  margin: 0;
  font-size: var(--type-body);
  font-weight: 600;
  color: var(--ink);
}

.letter p {
  margin: 0 0 1.2rem;
  text-wrap: pretty;
}

.lede {
  color: var(--ink);
}

#manifesto p {
  margin-bottom: 1.9rem;
  line-height: 1.9;
}

#manifesto .close {
  margin-top: 3.25rem;
  margin-bottom: 0;
}

#manifesto .name {
  color: var(--ink);
}

.sign-off {
  display: flex;
  gap: 4rem;
  margin-top: 2rem;
}

.signed {
  margin: 0;
}

.signed figcaption {
  margin-top: 0.35rem;
  font-family: var(--font-mono);
}

.role {
  display: block;
  font-size: var(--type-small);
  color: var(--ink-secondary);
}

.mark {
  display: block;
  width: var(--w);
  height: 2.8125rem;
  color: var(--ink);
}

.contact {
  margin-top: 11rem;
  font-style: normal;
}

.contact button {
  margin: 0;
  padding: 0;
  border: 0;
  background: none;
  font: inherit;
  font-family: var(--font-mono);
  color: var(--ink-secondary);
  cursor: pointer;
  transition: color 150ms ease-out, opacity 150ms ease-out;
}

.contact button.swapping {
  opacity: 0;
}

.contact button:hover {
  color: var(--ink);
}

.contact button:focus-visible {
  color: var(--ink);
  outline: 1px solid var(--ink);
  outline-offset: 4px;
}

.toggle {
  position: fixed;
  bottom: 1.5rem;
  left: 1.5rem;
  margin: 0;
  padding: 0;
  border: 0;
  background: none;
  font-family: var(--font-mono);
  font-size: var(--type-small);
  color: var(--ink-secondary);
  cursor: pointer;
  transition: color 150ms ease-out;
}

.toggle:hover {
  color: var(--ink);
}

.toggle:focus-visible {
  color: var(--ink);
  outline: 1px solid var(--ink);
  outline-offset: 4px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

@media (prefers-reduced-motion: reduce) {
  .reveal,
  .contact button {
    animation: none;
    transition: none;
  }

  .reveal {
    opacity: 1;
  }
}

@media (max-width: 600px) {
  .page {
    padding: 8vh 2rem 14vh;
  }
}