/* Learning-only layout. Shared brand primitives stay in home.css. */
.learning-home .lesson-origin { display: block; margin-top: 5px; color: var(--muted); font-size: 12px; }
.learning-home .lesson-number { font-size: 17px; font-weight: 750; font-variant-numeric: tabular-nums; }
.learning-home .lesson-meta time { white-space: nowrap; }
.learning-pages .breadcrumbs { display: flex; flex-wrap: wrap; gap: 8px; color: var(--muted); font-size: 13px; margin: 8px 0 24px; overflow-wrap: anywhere; }
.learning-pages .breadcrumbs a { color: var(--blue); }
.learning-pages .reading-layout { display: grid; grid-template-columns: minmax(0, 860px) minmax(200px, 1fr); gap: 28px; align-items: start; }
.learning-pages .reading-card { min-width: 0; padding: 40px; border: 1px solid #fff; border-radius: 16px; background: #fffffff2; box-shadow: 0 14px 45px #32334f06; }
.learning-pages .article-heading { padding-bottom: 28px; margin-bottom: 28px; border-bottom: 1px solid var(--line); }
.learning-pages .article-heading .eyebrow { letter-spacing: .13em; margin-bottom: 14px; }
.learning-pages .article-heading h1 { font-size: clamp(28px, 2.7vw, 38px); line-height: 1.4; margin: 0 0 18px; text-wrap: pretty; overflow-wrap: anywhere; }
.learning-pages .article-deck { font-size: 17px; color: var(--muted); line-height: 1.8; }
.learning-pages .article-meta { display: flex; flex-wrap: wrap; gap: 10px 18px; margin-top: 20px; font-size: 12px; color: var(--muted); }
.learning-pages .article-meta a { color: #ab2942; background: #fff0ed; border-radius: 30px; padding: 0 10px; }
.learning-pages .article-body { font-size: 17px; line-height: 1.9; overflow-wrap: anywhere; }
.learning-pages .article-body > p { margin: 0 0 20px; }
.learning-pages .article-body > p:first-child { font-size: 18px; color: #263952; }
.learning-pages .article-body h2 { font-size: 23px; line-height: 1.5; margin: 40px 0 18px; scroll-margin-top: 24px; }
.learning-pages .article-body ul, .learning-pages .article-body ol { padding-left: 1.4em; margin: 12px 0 24px; }
.learning-pages .article-body li { padding-left: 4px; margin: 10px 0; }
.learning-pages .article-body a, .learning-pages .article-neighbors a { color: var(--blue); text-decoration: underline; text-underline-offset: 4px; text-decoration-color: #0064df40; }
.learning-pages .article-body a:hover, .learning-pages .article-neighbors a:hover { text-decoration-color: currentColor; }
.learning-pages .toc-column { min-width: 0; position: sticky; top: 24px; }
.learning-pages .article-toc { border: 1px solid #ffffffd9; border-radius: 12px; background: #ffffffbf; padding: 20px; font-size: 13px; }
.learning-pages .article-toc summary { cursor: pointer; font-size: 15px; font-weight: 750; }
.learning-pages .article-toc ol { margin: 16px 0 0; padding-left: 1.3em; }
.learning-pages .article-toc li { padding-left: 3px; margin: 10px 0; line-height: 1.6; }
.learning-pages .article-toc a { display: block; color: #46546d; padding: 3px 0; }
.learning-pages .article-toc a:hover { color: var(--blue); }
.learning-pages .toc-note { font-size: 13px; line-height: 1.9; color: var(--muted); padding: 20px; }
.learning-pages .mobile-toc-slot:empty { display: none; }
.learning-pages .example-block { margin: 24px 0; border: 1px solid #e0e5ee; border-radius: 10px; overflow: hidden; background: #f6f8fc; }
.learning-pages .example-heading { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 14px; padding: 12px 16px; background: #edf2f9; font-size: 13px; color: var(--muted); }
.learning-pages .copy-example { margin-left: auto; border: 1px solid #e8a3a5; border-radius: 20px; background: #fff6f2; color: #9f2535; padding: 7px 14px; font-size: 13px; }
.learning-pages .copy-example:hover { background: #ffe4db; }
.learning-pages .copy-feedback:not(:empty) { flex-basis: 100%; color: #394d70; }
.learning-pages pre { margin: 0; padding: 20px; max-width: 100%; overflow-x: auto; line-height: 1.8; font-size: 15px; tab-size: 2; }
.learning-pages code { font-family: "SFMono-Regular", Consolas, monospace; }
.learning-pages .table-scroll { overflow-x: auto; max-width: 100%; border: 1px solid var(--line); border-radius: 8px; margin: 24px 0; }
.learning-pages table { border-collapse: collapse; width: 100%; min-width: 500px; font-size: 15px; }
.learning-pages th, .learning-pages td { padding: 13px 16px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.learning-pages th { background: #f1f4fa; }
.learning-pages tr:last-child td { border-bottom: 0; }
.learning-pages .article-references { margin-top: 36px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; }
.learning-pages .article-references h2, .learning-pages .article-related h2 { color: var(--ink); }
.learning-pages .article-references li p { margin-top: 6px; }
.learning-pages .article-references small { font-size: 12px; }
.learning-pages .article-related { border-top: 1px solid var(--line); margin-top: 28px; font-size: 15px; }
.learning-pages .article-related li p { color: var(--muted); margin-top: 4px; font-size: 14px; }
.learning-pages .article-neighbors { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; margin: 32px 0 24px; padding-top: 24px; border-top: 1px solid var(--line); font-size: 15px; }
.learning-pages .article-neighbors small { display: block; color: var(--muted); font-size: 12px; margin-bottom: 8px; }
.learning-pages .return-list { font-size: 14px; }
.learning-pages .draft-notice { padding: 12px 16px; margin-top: 20px; background: #fff2d7; color: #744200; border-radius: 8px; }
.learning-pages .catalog-section { padding: 36px 40px; border: 1px solid white; border-radius: 16px; background: #ffffffe8; }
.learning-pages .catalog-intro { color: var(--muted); margin: 12px 0 24px; }
.learning-pages .catalog-status { font-size: 13px; color: var(--muted); margin: 20px 0 4px; }
.learning-pages .catalog-section .lesson { grid-template-columns: 52px minmax(0, 1fr) 150px; padding-block: 24px; }
.learning-pages .catalog-section .lesson h3 { font-size: 19px; }
.learning-pages .catalog-section .resource-note { margin-top: 24px; }
@media (max-width: 1050px) {
    .learning-pages .reading-layout { grid-template-columns: minmax(0, 1fr) 220px; gap: 18px; }
    .learning-pages .reading-card { padding: 30px; }
}
@media (max-width: 760px) {
    .learning-pages .reading-layout { display: flex; flex-direction: column; gap: 16px; }
    .learning-pages .reading-card { width: 100%; padding: 24px 20px; border-radius: 12px; }
    .learning-pages .breadcrumbs { margin-bottom: 18px; font-size: 12px; }
    .learning-pages .article-heading h1 { font-size: 28px; max-width: none; }
    .learning-pages .article-heading { margin-bottom: 22px; padding-bottom: 22px; }
    .learning-pages .article-body { font-size: 17px; line-height: 1.85; }
    .learning-pages .article-body h2 { font-size: 21px; margin-top: 32px; }
    .learning-pages .article-deck { font-size: 15px; }
    .learning-pages .toc-column { position: static; width: 100%; order: -1; }
    .learning-pages .toc-column:empty { display: none; }
    .learning-pages .toc-note { display: none; }
    .learning-pages .mobile-toc-slot:not(:empty) { margin-bottom: 24px; }
    .learning-pages .article-toc { padding: 14px 16px; background: #f5f6fa; border-color: #e4e7ee; }
    .learning-pages .article-neighbors { grid-template-columns: 1fr; }
    .learning-pages .catalog-section { padding: 24px 20px; }
    .learning-pages .catalog-section h1 { font-size: 28px; }
    .learning-pages .catalog-section .lesson { grid-template-columns: 36px minmax(0, 1fr); gap: 12px; }
    .learning-pages .catalog-section .lesson .icon-tile { width: 36px; height: 36px; }
    .learning-pages .catalog-section .lesson h3 { font-size: 17px; }
    .learning-pages .catalog-section .lesson-meta { grid-column: 2; text-align: left; display: flex; flex-wrap: wrap; gap: 12px; align-items: baseline; }
    .learning-pages .catalog-section .lesson-meta small { margin: 0; }
}