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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  line-height: var(--lh-base);
  color: var(--color-fg);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: 'ss01', 'cv11';
}

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

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease-out);
}

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

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

p {
  margin: 0 0 var(--space-4);
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-weight: var(--fw-semibold);
  letter-spacing: -0.02em;
  line-height: var(--lh-tight);
  color: var(--color-fg);
}

h1 { font-size: var(--fs-3xl); }
h2 { font-size: var(--fs-2xl); letter-spacing: -0.025em; }
h3 { font-size: var(--fs-xl); }
h4 { font-size: var(--fs-lg); }

::selection {
  background: var(--color-fg);
  color: var(--color-bg);
}

:focus-visible {
  outline: 2px solid var(--color-fg);
  outline-offset: 3px;
}

/* Utility */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-weight: var(--fw-medium);
  color: var(--color-muted);
}

.eyebrow::before {
  content: '';
  width: 24px;
  height: 1px;
  background: currentColor;
}

.lead {
  font-size: var(--fs-md);
  line-height: 1.55;
  color: var(--color-muted);
  max-width: 64ch;
}

.section {
  padding-top: var(--section-pad-y);
  padding-bottom: var(--section-pad-y);
  border-top: var(--border-thin);
}

.section--inv {
  background: var(--color-bg-inv);
  color: var(--color-fg-inv);
  border-top-color: var(--color-bg-inv);
}

.section--inv h1,
.section--inv h2,
.section--inv h3,
.section--inv h4 {
  color: var(--color-fg-inv);
}

.section--inv .lead,
.section--inv .eyebrow {
  color: var(--color-muted-inv);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.divider {
  border: 0;
  border-top: var(--border-thin);
  margin: 0;
}