.landing-page[data-astro-cid-j7pv25f6]{width:min(100%,70rem);margin:0 auto;padding:clamp(1.8rem,4vw,3rem) var(--gutter) 4.5rem}.hero[data-astro-cid-j7pv25f6]{position:relative;width:100%;padding:1.4rem 0 1.2rem 1.65rem;border-top:1px solid var(--c-rule);border-bottom:2px solid var(--c-text);border-left:4px solid var(--c-accent)}.cover-edition[data-astro-cid-j7pv25f6]{display:flex;justify-content:space-between;gap:1rem;color:var(--c-muted);font-family:var(--font-mono);font-size:.62rem;text-transform:uppercase}.cover-title[data-astro-cid-j7pv25f6]{max-width:35rem;margin-top:3.2rem}.eyebrow[data-astro-cid-j7pv25f6],.section-kicker[data-astro-cid-j7pv25f6]{color:var(--c-accent);font-family:var(--font-mono);font-size:.68rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase}.eyebrow[data-astro-cid-j7pv25f6]{margin:0 0 .55rem}.hero[data-astro-cid-j7pv25f6] h1[data-astro-cid-j7pv25f6]{max-width:44rem;margin:0 0 .7rem;font-size:3.35rem;line-height:1.02;letter-spacing:0}.hero-copy[data-astro-cid-j7pv25f6]{max-width:31rem;margin:0;color:var(--c-text-soft);font-family:var(--font-reading);font-size:1.08rem;line-height:1.5}.cover-actions[data-astro-cid-j7pv25f6]{display:flex;flex-wrap:wrap;gap:.55rem;margin-top:1.45rem}.cover-actions[data-astro-cid-j7pv25f6] a[data-astro-cid-j7pv25f6]{display:inline-flex;min-height:2.65rem;align-items:center;justify-content:center;gap:.65rem;padding:.62rem .8rem;border:1px solid var(--c-rule);border-radius:var(--radius);font-size:.76rem;font-weight:700;text-decoration:none}.cover-primary[data-astro-cid-j7pv25f6]{border-color:var(--c-accent-fill)!important;background:var(--c-accent-fill);color:var(--c-on-accent)}.cover-primary[data-astro-cid-j7pv25f6]:hover{background:var(--c-link-hover);color:var(--c-on-accent)}.cover-secondary[data-astro-cid-j7pv25f6]{background:var(--c-surface);color:var(--c-text-soft)}.cover-secondary[data-astro-cid-j7pv25f6]:hover{border-color:var(--c-accent);color:var(--c-accent)}.hero-meta[data-astro-cid-j7pv25f6]{margin:1rem 0 0;padding-top:.65rem;border-top:1px solid var(--c-rule);color:var(--c-muted);font-family:var(--font-mono);font-size:.6rem}.section-head[data-astro-cid-j7pv25f6]{display:flex;align-items:end;justify-content:space-between;gap:1.2rem;margin-bottom:.7rem;padding-bottom:.65rem;border-bottom:1px solid var(--c-rule)}.section-head[data-astro-cid-j7pv25f6] h2[data-astro-cid-j7pv25f6]{margin:.22rem 0 0;font-size:clamp(1.35rem,3vw,1.72rem);line-height:1.18}.section-head[data-astro-cid-j7pv25f6]>p[data-astro-cid-j7pv25f6]{max-width:18rem;margin:0;color:var(--c-muted);font-size:.72rem;line-height:1.45;text-align:right}@media(max-width:720px){.section-head[data-astro-cid-j7pv25f6]{align-items:flex-start;flex-direction:column;gap:.35rem}.section-head[data-astro-cid-j7pv25f6]>p[data-astro-cid-j7pv25f6]{max-width:38rem;text-align:left}}@media(max-width:600px){.landing-page[data-astro-cid-j7pv25f6]{padding-top:1.4rem}.hero[data-astro-cid-j7pv25f6]{min-height:0;padding-left:1rem}.cover-title[data-astro-cid-j7pv25f6]{margin-top:2rem}.hero[data-astro-cid-j7pv25f6] h1[data-astro-cid-j7pv25f6]{font-size:2.55rem}.cover-actions[data-astro-cid-j7pv25f6]{display:grid;grid-template-columns:1fr}.cover-actions[data-astro-cid-j7pv25f6] a[data-astro-cid-j7pv25f6]{width:100%}}.featured-posts[data-astro-cid-j7pv25f6],.book-library[data-astro-cid-j7pv25f6]{padding-top:2.8rem;scroll-margin-top:calc(var(--header-height) + .75rem)}.featured-post-list[data-astro-cid-j7pv25f6]{border-top:1px solid var(--c-rule)}.featured-post[data-astro-cid-j7pv25f6]{display:grid;grid-template-columns:minmax(13rem,.7fr) minmax(0,1.3fr);gap:clamp(1.2rem,4vw,3.5rem);height:17rem;align-items:center;padding:1rem 0;overflow:hidden;border-bottom:1px solid var(--c-rule)}.featured-post-copy[data-astro-cid-j7pv25f6]{max-width:21rem}.featured-post-label[data-astro-cid-j7pv25f6]{margin:0;color:var(--c-accent);font-family:var(--font-mono);font-size:.62rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase}.featured-post-copy[data-astro-cid-j7pv25f6] h3[data-astro-cid-j7pv25f6]{margin:.35rem 0 .5rem;font-size:clamp(1.15rem,2vw,1.5rem);line-height:1.15}.featured-post-copy[data-astro-cid-j7pv25f6]>p[data-astro-cid-j7pv25f6]:not(.featured-post-label){margin:0;color:var(--c-text-soft);font-family:var(--font-reading);font-size:.8rem;line-height:1.5}.featured-post-copy[data-astro-cid-j7pv25f6]>a[data-astro-cid-j7pv25f6]{display:inline-flex;gap:.45rem;margin-top:.8rem;color:var(--c-text-soft);font-size:.72rem;font-weight:650;text-decoration:none}.featured-post-copy[data-astro-cid-j7pv25f6]>a[data-astro-cid-j7pv25f6]:hover{color:var(--c-accent)}.landing-visual[data-astro-cid-j7pv25f6]{min-width:0}.landing-visual[data-astro-cid-j7pv25f6][aria-busy=true]{opacity:.78}.landing-visual[data-astro-cid-j7pv25f6] .learning-figure{width:100%!important;max-width:none!important;margin:0!important}.landing-visual[data-astro-cid-j7pv25f6] .learning-figure>p,.landing-visual[data-astro-cid-j7pv25f6] .visual-kicker,.landing-visual[data-astro-cid-j7pv25f6] .visual-title{display:none!important}.landing-visual[data-astro-cid-j7pv25f6] .diagram-source{display:none}.landing-visual[data-astro-cid-j7pv25f6] .visual-scroll{max-width:100%;overflow-x:auto;overscroll-behavior-inline:contain}.landing-visual[data-astro-cid-j7pv25f6] .visual-wide svg,.landing-visual[data-astro-cid-j7pv25f6] .backprop-visual svg{min-width:0}.landing-visual[data-astro-cid-j7pv25f6] svg{max-width:100%;height:auto}.landing-visual-placeholder[data-astro-cid-j7pv25f6]{min-height:10rem;display:grid;place-items:center;margin:0;border:1px solid var(--c-rule);border-radius:var(--radius);color:var(--c-muted);font-family:var(--font-ui);font-size:.72rem}.landing-visual-error[data-astro-cid-j7pv25f6]{margin:0;color:var(--c-muted);font-size:.72rem}.landing-visual-error[data-astro-cid-j7pv25f6]+a[data-astro-cid-j7pv25f6]{display:inline-block;margin-top:.35rem;color:var(--c-accent);font-size:.7rem}.featured-post-visual[data-astro-cid-j7pv25f6]{height:15rem;overflow:hidden}.featured-post-visual[data-astro-cid-j7pv25f6] .learning-figure{height:100%;overflow:hidden}.featured-post-visual[data-astro-cid-j7pv25f6] .learning-figure figcaption{display:none}.featured-post-visual[data-astro-cid-j7pv25f6] .learning-figure>.visual-panel,.featured-post-visual[data-astro-cid-j7pv25f6] .learning-figure>.visual-grid--two,.featured-post-visual[data-astro-cid-j7pv25f6] .learning-figure>.visual-scroll{max-height:100%;overflow:hidden}.featured-post-visual[data-astro-cid-j7pv25f6] .learning-figure>.visual-panel,.featured-post-visual[data-astro-cid-j7pv25f6] .learning-figure>.visual-grid--two,.featured-post-visual[data-astro-cid-j7pv25f6] .learning-figure>.visual-scroll{height:100%;min-height:0}.featured-post-visual[data-astro-cid-j7pv25f6] .learning-figure>.visual-panel{display:grid;align-content:center}.featured-post-visual[data-astro-cid-j7pv25f6] .learning-figure>.visual-grid--two{align-items:center}.featured-post-visual[data-astro-cid-j7pv25f6] .learning-figure>.visual-panel svg,.featured-post-visual[data-astro-cid-j7pv25f6] .learning-figure>.visual-scroll svg,.featured-post-visual[data-astro-cid-j7pv25f6] .learning-figure>.visual-grid--two svg,.featured-post-visual[data-astro-cid-j7pv25f6] .learning-figure>svg{width:100%;height:100%;max-width:100%;max-height:100%;object-fit:contain}.featured-post[data-astro-cid-j7pv25f6] .landing-visual-placeholder[data-astro-cid-j7pv25f6]{min-height:15rem}.book-grid[data-astro-cid-j7pv25f6]{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:.8rem}.book-card[data-astro-cid-j7pv25f6]{min-width:0;height:22rem;display:grid;grid-template-rows:auto minmax(0,1fr) auto;gap:.65rem;padding:.75rem;overflow:hidden;border:1px solid var(--c-rule);border-radius:var(--radius-lg);background:var(--c-bg-tint);color:inherit;text-decoration:none}.book-card[data-astro-cid-j7pv25f6]:hover{border-color:var(--c-accent);background:var(--c-bg)}.book-card[data-astro-cid-j7pv25f6]:focus-visible{outline:2px solid var(--c-accent);outline-offset:3px}.book-card-number[data-astro-cid-j7pv25f6]{color:var(--c-accent);font-family:var(--font-mono);font-size:.7rem}.book-card-heading[data-astro-cid-j7pv25f6]{height:2.9rem;display:grid;grid-template-columns:auto minmax(0,1fr);gap:.7rem;align-items:start;min-width:0}.book-card-heading[data-astro-cid-j7pv25f6] h3[data-astro-cid-j7pv25f6]{display:-webkit-box;overflow:hidden;margin:0;color:var(--c-text);font-size:.8rem;line-height:1.2;-webkit-box-orient:vertical;-webkit-line-clamp:3}.book-card-visual[data-astro-cid-j7pv25f6]{width:100%;height:8.5rem;min-width:0;display:flex;align-items:center;justify-content:center;overflow:hidden}.book-card-visual[data-astro-cid-j7pv25f6] .learning-figure{width:100%!important;height:100%;max-width:100%!important;overflow:hidden}.book-card-visual[data-astro-cid-j7pv25f6] .learning-figure figcaption{display:none}.book-card-visual[data-astro-cid-j7pv25f6] .learning-figure>.visual-panel,.book-card-visual[data-astro-cid-j7pv25f6] .learning-figure>.visual-grid--two,.book-card-visual[data-astro-cid-j7pv25f6] .learning-figure>.visual-scroll,.book-card-visual[data-astro-cid-j7pv25f6] .coding-visual{max-width:100%;max-height:100%;overflow:hidden}.book-card-visual[data-astro-cid-j7pv25f6] .learning-figure>.visual-panel svg,.book-card-visual[data-astro-cid-j7pv25f6] .learning-figure>.visual-scroll svg,.book-card-visual[data-astro-cid-j7pv25f6] .learning-figure>.visual-grid--two svg,.book-card-visual[data-astro-cid-j7pv25f6] .learning-figure>svg{width:100%;height:100%;max-width:100%;max-height:100%;object-fit:contain}.book-card-explanation[data-astro-cid-j7pv25f6]{display:-webkit-box;min-height:3.9rem;overflow:hidden;margin:0;color:var(--c-text-soft);font-family:var(--font-reading);font-size:.68rem;line-height:1.4;-webkit-box-orient:vertical;-webkit-line-clamp:4}.book-card-visual[data-astro-cid-j7pv25f6] .landing-visual-placeholder[data-astro-cid-j7pv25f6]{width:100%;min-height:7rem}@media(max-width:720px){.featured-post[data-astro-cid-j7pv25f6]{grid-template-columns:1fr;height:28rem;gap:1rem;align-content:start}.featured-post-copy[data-astro-cid-j7pv25f6]{max-width:none}.featured-post-visual[data-astro-cid-j7pv25f6]{height:14rem}.featured-post[data-astro-cid-j7pv25f6] .landing-visual-placeholder[data-astro-cid-j7pv25f6]{min-height:14rem}.book-grid[data-astro-cid-j7pv25f6]{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:600px){.featured-posts[data-astro-cid-j7pv25f6],.book-library[data-astro-cid-j7pv25f6]{padding-top:2.2rem}.book-card[data-astro-cid-j7pv25f6]{height:21rem}.book-card-visual[data-astro-cid-j7pv25f6]{height:7rem}}@media(min-width:721px)and (max-width:1100px){.book-grid[data-astro-cid-j7pv25f6]{grid-template-columns:repeat(3,minmax(0,1fr))}}@media(max-width:420px){.book-grid[data-astro-cid-j7pv25f6]{grid-template-columns:1fr}}