/* Official learning material: scoped to enriched pages, full-size images. */
[data-learning-upgrade] :is(h1,h2,h3) { overflow-wrap: break-word; text-wrap: pretty; }
[data-learning-upgrade] :is(.hero-photo-frame,.feature-photo) { margin: 0; }
[data-learning-upgrade] :is(.hero-photo-frame,.feature-photo) img { height: auto; aspect-ratio: auto; object-fit: contain; }
[data-learning-upgrade] .hero h1 { font-size: clamp(32px,5vw,58px); line-height: 1.2; letter-spacing: -.045em; }
[data-learning-upgrade] .site-header .primary-nav a { min-height: 46px; }
[data-learning-upgrade] :is(.section,.official-toc,.hub-guide) [id],
[data-learning-upgrade] :is(section,nav)[id] { scroll-margin-top: 155px; }
.official-section { padding-block: clamp(44px,6vw,82px); border-block-end: 1px solid var(--line); }
.official-heading { max-width: 840px; margin-bottom: 24px; }
.official-heading h2 { margin: 0; font-size: clamp(27px,4.5vw,46px); line-height: 1.3; letter-spacing: -.035em; }
.official-heading .eyebrow { margin-bottom: 12px; color: var(--blue); font-size: 14px; letter-spacing: .02em; }
.official-lead { max-width: 860px; font-size: 18px; line-height: 1.85; }
.official-section p { margin-block: 0 18px; }
.official-section :is(p,li,dd) { overflow-wrap: anywhere; }
.official-cards { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 16px; margin-block: 30px; }
.official-card { min-width: 0; display: flex; flex-direction: column; align-items: flex-start; padding: 26px; border: 1px solid var(--line); border-top: 4px solid var(--blue); background: #fffdf9; }
.official-card h3 { margin-block: 0 14px; font-size: 22px; line-height: 1.4; }
.official-card p { color: var(--ink-soft); }
.official-card .official-text-link { margin-top: auto; }
.official-text-link { display: inline-flex; align-items: center; min-height: 44px; padding-block: 8px; gap: 8px; color: var(--blue); font-size: 15px; font-weight: 800; text-decoration: underline; text-underline-offset: 5px; }
.official-note { font-size: 14px; line-height: 1.8; color: var(--ink-soft); }
.official-note a { color: var(--blue); text-decoration: underline; text-underline-offset: 4px; }
.official-split { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: clamp(24px,4vw,60px); align-items: center; }
.official-split > * { min-width: 0; }
.official-split h3 { font-size: 24px; line-height: 1.45; }
.official-figure { margin: 0; border: 1px solid var(--line); background: #fff; }
.official-figure img { display: block; width: 100%; height: auto; max-height: none; object-fit: contain; }
.official-figure figcaption { padding: 14px 16px; border-top: 1px solid var(--line); color: var(--ink-soft); font-size: 14px; line-height: 1.7; }
.official-checks { padding-left: 22px; margin: 22px 0; }
.official-checks li { padding-left: 5px; margin-bottom: 16px; }
.official-checks strong { display: block; color: var(--ink); }
.official-definition { margin: 0; }
.official-definition > div { padding: 16px 0; border-bottom: 1px solid var(--line); }
.official-definition dt { color: var(--blue); font-weight: 800; font-size: 18px; }
.official-definition dd { margin: 8px 0 0; }
.official-ai-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 24px; margin-block: 30px; }
.official-ai-card { min-width: 0; padding: 28px; border: 1px solid var(--line); background: var(--white); }
.official-ai-card h3 { font-size: clamp(22px,3vw,27px); line-height: 1.4; margin-block: 0 18px; }
.official-ai-card .official-figure { margin-block: 24px; }
.official-ai-card > .eyebrow { color: var(--blue); font-size: 15px; }
.official-mini-note { padding: 20px; margin-block: 24px; background: var(--blue-soft); }
.official-mini-note p { margin: 10px 0 0; }
.official-inline-links,.official-toc { display: flex; flex-wrap: wrap; gap: 10px; }
.official-inline-links a,.official-toc a { display: inline-flex; min-height: 46px; align-items: center; justify-content: center; padding: 10px 16px; border: 1px solid var(--line); font-size: 15px; line-height: 1.5; font-weight: 750; background: var(--white); color: var(--blue); }
.official-toc { margin-block: 24px; }
.official-inline-links a:hover,.official-toc a:hover { border-color: var(--blue); background: var(--blue-soft); }
.official-video-stage { width: 100%; min-width: 0; aspect-ratio: 16 / 9; min-height: 200px; background: var(--ink); position: relative; display: grid; place-items: center; }
.official-video-stage > img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; opacity: .7; }
.official-video-stage > iframe { width: 100%; height: 100%; border: 0; position: absolute; inset: 0; }
.official-video-play { position: absolute; max-width: calc(100% - 32px); display: flex; gap: 10px; align-items: center; min-height: 52px; padding: 12px 18px; color: var(--ink); background: #fff; border: 1px solid var(--line); border-radius: 5px; font-size: 16px; font-weight: 800; line-height: 1.5; cursor: pointer; box-shadow: 0 8px 32px #0003; }
.official-video-play:hover { background: var(--blue-soft); }
.official-video-caption { margin-top: 14px !important; font-weight: 750; font-size: 15px; }
.official-hub-note .official-hub-steps { list-style: none; counter-reset: official-step; padding: 0; display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 14px; margin: 24px 0; }
.official-hub-steps li { counter-increment: official-step; padding: 20px; border: 1px solid var(--line); background: var(--white); min-width: 0; }
.official-hub-steps li::before { content: '0' counter(official-step); display: block; color: var(--blue); font-size: 15px; font-weight: 800; margin-bottom: 12px; }
.official-hub-note .official-hub-steps h3 { font-size: 19px; line-height: 1.4; margin: 0 0 12px; }
.official-hub-note .official-hub-steps p { font-size: 16px; line-height: 1.85; margin: 0; }
.official-hub-links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
.official-hub-links a { display: inline-flex; min-height: 46px; align-items: center; padding: 10px 16px; border: 1px solid var(--blue); color: var(--blue); background: #fff; font-weight: 750; font-size: 15px; }
.official-hub-ai { padding: 18px 20px; border-left: 3px solid var(--blue); background: var(--blue-soft); }
[data-learning-upgrade] .editorial-card .official-text-link { margin-top: 18px; }
@media(min-width:980px) { [data-learning-upgrade] .hub-guide-jumps .hub-wrap { grid-template-columns: repeat(7,minmax(0,1fr)); } }
@media(max-width:760px) {
  .official-cards,.official-split,.official-ai-grid { grid-template-columns: minmax(0,1fr); }
  .official-card,.official-ai-card { padding: 22px 18px; }
  .official-lead { font-size: 17px; }
  .official-split { gap: 24px; }
  .official-hub-note .official-hub-steps { grid-template-columns: repeat(2,minmax(0,1fr)); }
  [data-learning-upgrade] :is(.signal-item p,.timeline-item p,.editorial-card p,.role-card p,.checklist span,.scenario p,.footer-brand p) { font-size: 16px; line-height: 1.8; }
  [data-learning-upgrade] .sub-hero h1 { font-size: clamp(30px,7.5vw,46px); line-height: 1.28; letter-spacing: -.035em; }
  [data-learning-upgrade] :is(.section-heading h2,.feature-copy h2,.intro-copy h2) { font-size: clamp(27px,6.7vw,37px); line-height: 1.35; }
  [data-learning-upgrade] .button { min-height: 48px; line-height: 1.5; font-size: 15px; }
  .official-toc a { flex: 1 1 130px; padding-inline: 10px; }
}
@media(max-width:420px) {
  [data-learning-upgrade] .hero .action-row { display: grid; grid-template-columns: minmax(0,1fr); }
  .official-hub-note .official-hub-steps { grid-template-columns: minmax(0,1fr); }
  .official-hub-links { display: grid; }
  .official-inline-links a { flex: 1 1 90px; padding-inline: 10px; }
  .official-heading h2 br { display: none; }
  .official-figure figcaption { padding: 12px; }
}