/* ==========================================================================
   Base: reset, document, typography, layout primitives, reveal
   ========================================================================== */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 7rem;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--white);
  color: var(--text-1);
  font-family: var(--font-body);
  font-size: var(--body);
  line-height: var(--leading-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img,
svg {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

h1,
h2,
h3,
h4,
p,
ul,
ol,
figure,
blockquote {
  margin: 0;
}

ul,
ol {
  padding: 0;
  list-style: none;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection {
  background: var(--accent-wash);
  color: var(--black);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 200;
  padding: 0.6rem 1rem;
  border-radius: var(--r-pill);
  background: var(--black);
  color: var(--white);
  font-size: var(--small);
  transform: translateY(-200%);
  transition: transform var(--fast) var(--ease-out);
}

.skip-link:focus {
  transform: none;
}

/* Layout ------------------------------------------------------------------ */

.page {
  position: relative;
  display: flex;
  min-height: 100vh;
  flex-direction: column;
}

.page__main {
  flex: 1;
}

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.container--narrow {
  max-width: 52rem;
}

.section {
  position: relative;
  padding-block: var(--section-y);
}

/* The light wash used to separate long stretches of white */
.section--wash {
  background-image: linear-gradient(180deg, var(--ink-100), var(--white) 50%);
}

.section--wash-up {
  background-image: linear-gradient(0deg, var(--ink-100), var(--white) 62%);
}

/* Typography -------------------------------------------------------------- */

.display-1,
.display-2,
.display-3 {
  font-family: var(--font-display);
  font-weight: 300;
  letter-spacing: var(--track-display);
  line-height: var(--leading-display);
  color: var(--text-1);
  text-wrap: balance;
}

.display-1 { font-size: var(--h1); letter-spacing: var(--track-h1); }
.display-2 { font-size: var(--h2); letter-spacing: var(--track-h2); }
.display-3 { font-size: var(--h3); letter-spacing: var(--track-h2); }

.display-1 .quiet,
.display-2 .quiet,
.display-3 .quiet {
  display: block;
  color: var(--ink-400);
}

.lede {
  max-width: 44rem;
  color: var(--text-2);
  font-size: var(--body);
  line-height: var(--leading-body);
}

@media (min-width: 640px) {
  .lede {
    font-size: var(--body-lg);
  }
}

.label {
  font-family: var(--font-mono);
  font-size: var(--tiny);
  font-weight: 500;
  letter-spacing: var(--track-label);
  text-transform: uppercase;
  color: var(--text-3);
}

.mono {
  font-family: var(--font-mono);
}

.muted {
  color: var(--text-2);
}

.center {
  text-align: center;
}

.section-head {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  max-width: 46rem;
  margin-bottom: 3.5rem;
}

.section-head--center {
  align-items: center;
  margin-inline: auto;
  text-align: center;
}

.section-head--center .lede {
  margin-inline: auto;
}

/* Reveal ------------------------------------------------------------------ */

[data-reveal] {
  opacity: 0;
  transform: translateY(var(--reveal-y, 16px));
  transition:
    opacity var(--reveal-duration, 0.6s) var(--ease) var(--reveal-delay, 0s),
    transform var(--reveal-duration, 0.6s) var(--ease) var(--reveal-delay, 0s);
}

[data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}

.no-js [data-reveal] {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}