/* Reading pages extend the existing site rather than replace its theme. */
.learn-page { background: var(--paper); }
.learn-page :is(a, button, summary):focus-visible { outline: 3px solid var(--brand-deep); outline-offset: 5px; }
.learn-page .site-nav [aria-current="page"] { color: var(--brand-deep); font-weight: 700; }
.skip-link { position: absolute; top: -100px; left: 20px; z-index: 30; padding: 12px 20px; background: white; }
.skip-link:focus { top: 10px; }
.learn-hero { padding-block: 30px 48px; border-bottom: 1px solid var(--line); }
.breadcrumbs { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; color: var(--muted); font-size: .875rem; margin-bottom: 34px; }
.breadcrumbs a:hover { color: var(--brand-deep); text-decoration: underline; }
.learn-hero h1 { max-width: 880px; margin: 12px 0 22px; font-size: clamp(2.2rem, 4.8vw, 3.65rem); line-height: 1.22; letter-spacing: -.035em; }
.learn-intro { max-width: 800px; margin: 0; color: var(--muted); font-size: 1.125rem; }
.learn-meta { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.learn-meta span { padding: 5px 12px; background: #f0f0f2; border-radius: 8px; font-size: .875rem; }
.learn-layout { display: grid; grid-template-columns: 218px minmax(0, 1fr); gap: 65px; align-items: start; padding-block: 46px 90px; }
.learn-toc { position: sticky; top: 24px; display: grid; gap: 5px; padding-right: 22px; border-right: 1px solid var(--line); }
.learn-toc strong { font-size: .875rem; padding: 8px 12px; color: var(--muted); }
.learn-toc a { display: block; padding: 9px 12px; font-size: .9375rem; border-radius: 8px; }
.learn-toc a:hover { color: var(--brand-deep); background: var(--soft); }
.learn-toc .toc-related { margin-top: 16px; border-top: 1px solid var(--line); padding-top: 16px; }
.learn-article { min-width: 0; max-width: 850px; }
.learn-section { margin-bottom: 46px; scroll-margin-top: 28px; }
.learn-section + .learn-section { border-top: 1px solid var(--line); padding-top: 40px; }
.learn-section h2 { font-size: clamp(1.55rem, 2.7vw, 2rem); line-height: 1.35; letter-spacing: -.025em; margin: 0 0 18px; }
.learn-section h3 { font-size: 1.125rem; line-height: 1.45; margin: 24px 0 8px; }
.learn-section p { margin: 10px 0 18px; }
.learn-section ul, .learn-section ol { padding-left: 24px; }
.learn-section li { padding-left: 3px; margin-block: 9px; }
.learn-article a:not(.button), .learn-bottom a:not(.button) { color: var(--brand-deep); text-decoration: underline; text-underline-offset: 4px; }
.learn-callout { padding: 20px 24px; border-left: 3px solid var(--brand); border-radius: 0 12px 12px 0; background: var(--soft); margin-block: 22px; }
.learn-callout p:last-child { margin-bottom: 0; }
.learn-callout strong { display: block; }
.learn-steps { list-style: none; counter-reset: learn-step; padding: 0 !important; margin-block: 22px; }
.learn-steps > li { counter-increment: learn-step; position: relative; padding: 0 0 24px 52px; margin: 0; }
.learn-steps > li:last-child { padding-bottom: 0; }
.learn-steps > li::before { content: counter(learn-step, decimal-leading-zero); position: absolute; left: 0; top: 0; color: var(--brand-deep); background: var(--soft); border-radius: 10px; width: 36px; height: 36px; display: grid; place-items: center; font-weight: 700; font-size: .875rem; }
.learn-steps h3 { margin: 0 0 6px; padding-top: 3px; }
.learn-steps p { margin: 0; color: var(--muted); }
.prompt-box { margin-block: 24px; padding: 22px 24px; background: #f4f4f6; border: 1px solid var(--line); border-radius: 16px; }
.prompt-header { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 12px; }
.prompt-header strong { font-size: .875rem; }
.copy-prompt { min-height: 40px; padding: 8px 14px; border: 1px solid #b9bbc1; border-radius: 9px; background: white; color: var(--ink); font: inherit; font-size: .875rem; cursor: pointer; }
.copy-prompt:hover { border-color: var(--brand-deep); color: var(--brand-deep); }
.copy-prompt[hidden] { display: none; }
.prompt-text { white-space: pre-wrap; overflow-wrap: anywhere; line-height: 1.85; margin-bottom: 0 !important; }
.copy-status { display: block; min-height: 1.5em; margin-top: 8px; color: var(--brand-deep); font-size: .875rem; }
.copy-status:empty { display: none; }
.deliverables { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 12px; margin-block: 22px; }
.deliverable { background: #f5f5f6; border-radius: 14px; padding: 20px; }
.deliverable span { color: var(--brand-deep); font-size: .875rem; font-weight: 700; }
.deliverable h3 { margin: 10px 0 6px; }
.deliverable p { font-size: .9375rem; color: var(--muted); margin: 0; }
.learn-faq details { padding: 19px 0; border-bottom: 1px solid var(--line); }
.learn-faq summary { cursor: pointer; font-weight: 700; }
.learn-faq p { color: var(--muted); margin-bottom: 0; }
.learn-bottom { display: flex; flex-wrap: wrap; gap: 18px; justify-content: space-between; align-items: center; padding: 28px; background: var(--soft); border-radius: 20px; margin-top: 40px; }
.learn-bottom h2 { margin: 0 0 8px; font-size: 1.5rem; }
.learn-bottom p { margin: 0; color: var(--muted); }
.case-hub { padding-block: 44px 88px; }
.case-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 22px; }
.case-card { padding: 30px; border: 1px solid var(--line); border-radius: 22px; display: flex; flex-direction: column; align-items: start; background: white; }
.case-card .section-kicker { margin: 0 0 18px; font-size: .875rem; }
.case-card h2 { margin: 0 0 16px; font-size: 1.75rem; line-height: 1.4; }
.case-card p { margin: 0 0 24px; color: var(--muted); }
.case-card ul { width: 100%; list-style: none; padding: 18px 0; border-block: 1px solid var(--line); margin: 0 0 24px; }
.case-card li { padding-block: 5px; }
.case-card li span { color: var(--muted); display: inline-block; min-width: 4.5em; }
.case-card .button { margin-top: auto; }
.app-guide { padding: 25px 0; border-bottom: 1px solid var(--line); scroll-margin-top: 28px; }
.app-guide:first-of-type { padding-top: 0; }
.app-guide:last-of-type { border-bottom: 0; }
.app-guide-heading { display: flex; gap: 14px; align-items: center; margin-bottom: 14px; }
.app-guide-heading img { width: 44px; height: 44px; object-fit: contain; border-radius: 11px; }
.app-guide-heading h3 { margin: 0; }
.app-guide-heading small { font-size: .875rem; color: var(--muted); }
.learn-section code { overflow-wrap: anywhere; font-size: .9em; }
.learn-section kbd { padding: 2px 6px; border: 1px solid var(--line); border-bottom-width: 2px; border-radius: 4px; font: inherit; font-size: .875rem; }
@media (max-width: 980px) {
  .learn-layout { grid-template-columns: 185px minmax(0,1fr); gap: 30px; }
  .deliverables { grid-template-columns: 1fr; }
}
@media (max-width: 700px) {
  .learn-hero { padding-block: 22px 32px; }
  .breadcrumbs { margin-bottom: 24px; }
  .learn-intro { font-size: 1rem; }
  .learn-layout { grid-template-columns: 1fr; gap: 32px; padding-block: 24px 56px; }
  .learn-toc { position: static; border: 1px solid var(--line); border-radius: 14px; padding: 12px; grid-template-columns: repeat(2,minmax(0,1fr)); }
  .learn-toc strong, .learn-toc .toc-related { grid-column: 1 / -1; }
  .learn-toc .toc-related { margin-top: 4px; padding-top: 8px; }
  .learn-toc a { padding: 8px; }
  .case-grid { grid-template-columns: 1fr; }
  .case-card { padding: 24px; }
  .learn-section + .learn-section { padding-top: 30px; }
  .learn-callout, .prompt-box { padding: 18px; }
  .learn-bottom { padding: 22px; }
  .learn-bottom .button { flex: 0 1 auto; }
}