:root {
  color-scheme: dark;
  --background: #171820;
  --foreground: #f6f4fa;
  --body-text: #d2d0dc;
  --accent: #e1bdf0;
  --button-text: #291a33;
  --line: #494654;
}

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

body {
  margin: 0;
  color: var(--foreground);
  background: var(--background);
  font: 1rem/1.65 Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.shell {
  width: min(calc(100% - 2.5rem), 58rem);
  margin-inline: auto;
}

a {
  color: var(--accent);
  text-underline-offset: 0.22em;
}

a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 5px;
}

.skip {
  position: absolute;
  inset: 1rem auto auto 1rem;
  z-index: 1;
  padding: 0.5rem;
  background: var(--background);
  transform: translateY(-250%);
}

.skip:focus {
  transform: none;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  padding-block: 1.3rem;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--foreground);
  font-weight: 700;
  text-decoration: none;
}

.mark {
  display: inline-block;
  width: 0.75rem;
  height: 1.1rem;
  border: 2px solid var(--accent);
  border-radius: 0.15rem;
}

nav,
.links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem 1.3rem;
}

nav a,
.links a {
  display: inline-block;
  padding-block: 0.2rem;
}

nav [aria-current] {
  font-weight: 700;
}

.hero,
.document {
  padding-block: clamp(3.25rem, 8vw, 6.5rem);
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: clamp(2.4rem, 7vw, 4.75rem);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: -0.06em;
}

h2 {
  font-size: 1.3rem;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

p {
  max-width: 68ch;
  margin-block-start: 0.75rem;
  color: var(--body-text);
}

.lead {
  margin-block: 1.3rem 0.8rem;
  font-size: clamp(1.18rem, 2vw, 1.45rem);
  line-height: 1.45;
}

.button {
  display: inline-block;
  margin-block-start: 1.8rem;
  padding: 0.58rem 1rem;
  border-radius: 0.2rem;
  color: var(--button-text);
  background: var(--accent);
  font-weight: 700;
  text-decoration: none;
}

.plain-section {
  padding-block: 1.8rem 3rem;
  border-top: 1px solid var(--line);
}

.links {
  margin: 0.7rem 0 0;
  padding: 0;
  list-style: none;
}

.document h2 {
  margin-block-start: 2rem;
}