:root {
  color-scheme: light;
  --ink: #18212b;
  --muted: #52606d;
  --line: #d8dee4;
  --link: #075aa8;
  --surface: #ffffff;
  --soft: #f5f7f9;
  --focus: #ffbf47;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--soft);
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 17px;
  line-height: 1.65;
}

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 10;
  padding: 10px 14px;
  transform: translateY(-150%);
  background: var(--surface);
  border: 2px solid var(--ink);
  color: var(--ink);
  font-weight: 700;
}

.skip-link:focus {
  transform: translateY(0);
}

main {
  width: min(920px, calc(100% - 32px));
  margin: 32px auto;
  padding: clamp(24px, 5vw, 64px);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  box-shadow: 0 4px 18px rgba(24, 33, 43, 0.06);
}

h1,
h2,
h3 {
  line-height: 1.25;
  scroll-margin-top: 24px;
}

h1 {
  margin: 0 0 12px;
  font-size: clamp(2rem, 5vw, 3rem);
}

h2 {
  margin-top: 56px;
  padding-top: 12px;
  border-top: 2px solid var(--ink);
  font-size: clamp(1.6rem, 4vw, 2.1rem);
}

h3 {
  margin-top: 32px;
  font-size: 1.25rem;
}

p,
li {
  max-width: 76ch;
}

a {
  color: var(--link);
  text-underline-offset: 0.16em;
}

a:hover {
  text-decoration-thickness: 2px;
}

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

ol,
ul {
  padding-left: 1.5rem;
}

li + li {
  margin-top: 0.35rem;
}

hr {
  margin: 48px 0;
  border: 0;
  border-top: 1px solid var(--line);
}

strong {
  color: #0e1720;
}

@media (max-width: 600px) {
  body {
    font-size: 16px;
  }

  main {
    width: 100%;
    margin: 0;
    border: 0;
    border-radius: 0;
    box-shadow: none;
  }
}

@media print {
  body {
    background: #ffffff;
  }

  .skip-link {
    display: none;
  }

  main {
    width: 100%;
    margin: 0;
    padding: 0;
    border: 0;
    box-shadow: none;
  }

  a {
    color: inherit;
  }

  h2,
  h3 {
    break-after: avoid;
  }
}