/* Reading surfaces inherit the marketing site's colors, fonts and controls. */
.guide-main {
  width: min(800px, calc(100% - 48px));
  margin: 0 auto;
  padding: 56px 0 32px;
  font-size: 17px;
  line-height: 1.9;
  overflow-wrap: anywhere;
}

.guide-main a:not(.button),
.guide-promo a,
.folding-howto a {
  text-decoration: underline;
  text-underline-offset: 0.24em;
  text-decoration-color: var(--color-border-strong);
}

.guide-main a:hover,
.guide-promo a:hover,
.folding-howto a:hover {
  text-decoration-color: currentColor;
}

.guide-main :focus-visible,
.guide-promo a:focus-visible,
.folding-howto a:focus-visible,
.guide-page .site-header a:focus-visible {
  outline: 2px solid var(--color-teal);
  outline-offset: 5px;
}

.guide-skip {
  position: fixed;
  top: 8px;
  left: 16px;
  z-index: 30;
  padding: 10px 16px;
  background: var(--color-surface);
  transform: translateY(-160%);
}

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

.guide-breadcrumb,
.guide-byline,
.guide-main figcaption,
.guide-reference {
  font-size: 14px;
  color: var(--color-text-secondary);
}

.guide-heading h1 {
  margin: 24px 0;
  max-width: 24em;
  font-size: clamp(28px, 4.5vw, 44px);
  line-height: 1.45;
  text-wrap: balance;
}

.guide-lead {
  color: var(--color-text-secondary);
  font-size: 18px;
}

.guide-toc {
  display: grid;
  gap: 8px;
  padding: 24px 0;
  border-block: 1px solid var(--color-border);
  margin: 32px 0 48px;
}

.guide-main section {
  margin: 48px 0 0;
  scroll-margin-top: 100px;
}

.guide-main h2 {
  font-size: clamp(23px, 3vw, 29px);
  line-height: 1.5;
  margin-bottom: 20px;
}

.guide-main h3 {
  font-size: 19px;
  line-height: 1.6;
  margin: 28px 0 12px;
}

.guide-main p,
.guide-main dd,
.guide-main li,
.folding-howto p,
.folding-howto li,
.guide-promo p {
  color: var(--color-text-secondary);
}

.guide-choices {
  margin: 0;
}

.guide-choices > div {
  padding: 20px 0;
  border-bottom: 1px solid var(--color-border);
}

.guide-choices dt {
  font-weight: 700;
  margin-bottom: 8px;
}

.guide-choices dd {
  margin: 0;
}

.guide-main code {
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.88em;
  color: var(--color-text);
}

.guide-main pre {
  padding: 20px;
  overflow-x: auto;
  background: var(--color-surface);
  border-radius: var(--radius-md);
  line-height: 1.7;
  scrollbar-width: thin;
  scrollbar-color: var(--color-border-strong) var(--color-surface);
}

.guide-preview {
  margin: 24px 0;
  padding: 20px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.guide-preview > p {
  margin-bottom: 12px;
  font-size: 14px;
}

.guide-preview summary {
  cursor: pointer;
  font-weight: 700;
  min-height: 44px;
  padding-block: 6px;
}

.guide-main ol,
.folding-howto ol {
  padding-left: 1.6em;
}

.guide-steps li,
.folding-howto li {
  padding-left: 6px;
  margin-bottom: 18px;
}

.guide-steps strong,
.folding-howto strong {
  color: var(--color-text);
}

.guide-main figure {
  margin: 28px 0;
}

.guide-main figure img {
  width: 100%;
  height: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}

.guide-main figcaption {
  margin-top: 10px;
  line-height: 1.7;
}

.guide-end {
  border-top: 1px solid var(--color-border);
  margin-top: 48px;
  padding-top: 24px;
}

.guide-promo {
  width: min(800px, 100%);
  margin: 48px auto 0;
  padding: 28px 0;
  border-block: 1px solid var(--color-border);
  line-height: 1.8;
}

.guide-promo h2 {
  margin-bottom: 12px;
}

.folding-howto {
  max-width: 800px;
  line-height: 1.85;
}

.folding-howto h2 {
  margin-bottom: 20px;
}

@media (max-width: 760px) {
  .guide-page .site-nav a {
    display: inline-flex;
  }

  .guide-main {
    width: calc(100% - 36px);
    padding-top: 32px;
    font-size: 16px;
  }

  .guide-lead {
    font-size: 17px;
  }

  .guide-main pre,
  .guide-preview {
    padding: 16px;
  }
}

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