/* Guide extensions reuse the established colour, type and focus tokens. */
.guide-shell { width: min(100% - 64px, 760px); margin-inline: auto; padding-block: 2.5rem 4rem; }
.guide-intro h1 { font-size: clamp(2rem, 1.6rem + 1.8vw, 3rem); line-height: 1.14; max-width: 25ch; }
.guide-byline { color: var(--ink-soft); font-size: .875rem; margin-block: 1rem 1.5rem; }
.guide-breadcrumb { display: flex; flex-wrap: wrap; gap: .25rem .65rem; padding: 0; margin: 0 0 1.5rem; list-style: none; font-size: .875rem; }
.guide-breadcrumb li + li::before { content: "/"; margin-inline-end: .65rem; color: var(--ink-soft); }
.guide-page a { color: var(--orange-ink); text-underline-offset: .2em; }
.guide-page .brand { color: var(--ink-strong); }
.guide-page p, .guide-page li { max-width: none; }
.guide-answer { padding: 1.5rem; background: var(--orange-tint); border-inline-start: 4px solid var(--orange-700); margin-block: 1.75rem 1rem; }
.guide-answer h2, .guide-toc h2 { font-size: 1.3rem; margin-bottom: .65rem; }
.guide-answer p { margin: 0; }
.guide-intro-action a { display: inline-flex; align-items: center; gap: .5rem; min-height: 44px; font-weight: 700; }
.guide-toc { padding-block: 1.25rem; margin-block: 1rem 2.5rem; border-block: 1px solid var(--line); }
.guide-toc ol { padding-inline-start: 1.5rem; margin: 0; }
.guide-toc a { display: inline-block; padding-block: .4rem; }
.guide-body { font-size: 1.0625rem; line-height: 1.75; }
.guide-body section { margin-block: 2.75rem; scroll-margin-top: 1.5rem; }
.guide-body h2 { font-size: clamp(1.65rem, 1.4rem + .7vw, 2rem); line-height: 1.2; max-width: 32ch; }
.guide-body ol, .guide-body ul { padding-inline-start: 1.5rem; }
.guide-body li { margin-bottom: .8rem; padding-inline-start: .2rem; }
.guide-table { overflow-x: auto; margin-block: 1.5rem; }
.guide-table table { width: 100%; border-collapse: collapse; font-size: 1rem; }
.guide-table caption { font-weight: 700; text-align: start; padding-bottom: .75rem; }
.guide-table th, .guide-table td { text-align: start; vertical-align: top; padding: .9rem .75rem; border-bottom: 1px solid var(--line); overflow-wrap: normal; }
.guide-table thead { background: var(--orange-tint); }
.guide-table tbody th { width: 42%; }
.guide-example { padding: 1.25rem 1.25rem 1.25rem 2.75rem !important; background: var(--paper-2); border: 1px solid var(--line); }
.guide-equation { font-weight: 700; padding: 1.25rem; border-block: 1px solid var(--line); }
.guide-proof, .guide-single { margin: 1.75rem 0; }
.guide-proof { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.5rem; align-items: start; }
.guide-proof figure { margin: 0; }
.guide-proof figure:last-child { grid-column: 1 / -1; width: min(100%, 480px); margin-inline: auto; }
.guide-page figure img { width: 100%; height: auto; }
.guide-single { max-width: 580px; margin-inline: auto; }
.guide-page figcaption { margin-top: .65rem; font-size: 1rem; line-height: 1.65; color: var(--ink-soft); }
.guide-note { font-size: .9375rem; color: var(--ink-soft); line-height: 1.65; }
.guide-download { border-block: 1px solid var(--line); padding-block: 2rem; margin-block: 3rem 2rem; scroll-margin-top: 1rem; }
.guide-download h2 { font-size: clamp(1.65rem, 1.4rem + .7vw, 2rem); }
.guide-download .store-badges { margin-block: 1.5rem .75rem; }
.guide-related h2 { font-size: 1.5rem; }
.guide-related ul { padding-inline-start: 1.25rem; }
.guide-related a { display: inline-block; padding-block: .5rem; }
@media (max-width: 767px) {
  .guide-shell { width: calc(100% - 44px); padding-top: 1.75rem; }
  .guide-proof { grid-template-columns: 1fr; }
  .guide-proof figure, .guide-proof figure:last-child { grid-column: auto; width: 100%; max-width: 480px; margin-inline: auto; }
  .guide-answer { padding: 1.1rem; }
  .guide-table th, .guide-table td { padding: .75rem .6rem; }
}
@media (min-width: 360px) and (max-width: 767px) {
  .guide-download .store-badges { flex-wrap: nowrap; gap: 12px; }
  .guide-download .store-badge--play { width: 170px; }
  .guide-download .store-badge--app { width: 132px; }
}