.glossary-term{border:0;border-bottom:1px dotted var(--accent);min-width:44px;min-height:44px;color:var(--accent-readable);cursor:pointer;font:inherit;background:0 0;justify-content:center;align-items:center;padding:0 .08rem;display:inline-flex;position:relative}.glossary-term:hover,.glossary-term:focus-visible{border-bottom-style:solid}.glossary-term:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.glossary-dialog[data-astro-cid-5q6czikv]{width:100%;max-width:min(32rem,100%);max-height:100dvh;color:var(--fg);background:0 0;border:0;margin:auto 0 0;padding:0}.glossary-dialog[data-astro-cid-5q6czikv]::backdrop{background:color-mix(in oklab, var(--bg) 58%, transparent)}.glossary-card[data-astro-cid-5q6czikv]{border:1px solid var(--border);max-height:82dvh;color:var(--fg);background:var(--surface);border-radius:.85rem .85rem 0 0;padding:1.25rem;position:relative;overflow-y:auto}.glossary-close[data-astro-cid-5q6czikv]{border:1px solid var(--border);width:44px;height:44px;color:var(--fg);background:var(--surface);cursor:pointer;border-radius:999px;font-size:1.35rem;position:absolute;top:.45rem;right:.45rem}.glossary-close[data-astro-cid-5q6czikv]:hover,.glossary-close[data-astro-cid-5q6czikv]:focus-visible{border-color:var(--accent)}.glossary-label[data-astro-cid-5q6czikv]{color:var(--accent-readable);font-family:var(--font-mono);letter-spacing:.13em;text-transform:uppercase;margin:0 3rem .45rem 0;font-size:.67rem;font-weight:700}.glossary-card[data-astro-cid-5q6czikv] h2[data-astro-cid-5q6czikv]{font-family:var(--font-display);margin:0 3rem .55rem 0;font-size:1.55rem}.glossary-short[data-astro-cid-5q6czikv]{color:var(--fg);margin:0 0 .65rem;font-weight:650;line-height:1.5}.glossary-detail[data-astro-cid-5q6czikv]{color:var(--muted);margin:0;line-height:1.65}.glossary-link[data-astro-cid-5q6czikv]{min-height:44px;color:var(--accent-readable);align-items:center;margin-top:.8rem;font-weight:650;display:inline-flex}@media (width>=560px){.glossary-dialog[data-astro-cid-5q6czikv]{margin:auto;padding:1rem}.glossary-card[data-astro-cid-5q6czikv]{border-radius:.85rem}}.lesson-article{width:100%;max-width:min(48rem,100%);margin:0 auto;padding:1.25rem 1rem 4rem;overflow-x:clip}.lesson-header{margin-bottom:2rem}.lesson-crumbs{min-height:44px;color:var(--muted);font-family:var(--font-mono);letter-spacing:.1em;text-transform:uppercase;flex-wrap:wrap;align-items:center;gap:.45rem;font-size:.68rem;display:flex}.lesson-crumbs a{min-height:44px;color:var(--accent-readable);align-items:center;display:inline-flex}.lesson-position{color:var(--accent-readable);font-family:var(--font-mono);letter-spacing:.12em;text-transform:uppercase;margin:.8rem 0 .45rem;font-size:.7rem;font-weight:700}.lesson-header h1{color:var(--fg);font-family:var(--font-display);letter-spacing:-.04em;align-items:flex-start;gap:.65rem;margin:0;font-size:clamp(2rem,7vw,3.7rem);line-height:1;display:flex}.lesson-icon{flex:none;font-size:.7em;line-height:1.2}.lesson-subtitle{max-width:min(58ch,100%);color:var(--muted);font-family:var(--font-serif);margin:.9rem 0 0;font-size:clamp(1.05rem,3vw,1.3rem);line-height:1.5}.lesson-meta{flex-wrap:wrap;align-items:center;gap:.5rem;margin-top:.9rem;display:flex}.lesson-meta>a{min-height:44px;color:var(--accent-readable);align-items:center;font-size:.8rem;display:inline-flex}.lesson-prose{min-width:0;color:var(--fg);overflow-wrap:anywhere;font-size:1rem;line-height:1.72}.lesson-prose>:first-child{margin-top:0}.lesson-prose h2{border-top:1px solid var(--border);font-family:var(--font-display);letter-spacing:-.025em;margin:2.5rem 0 .9rem;padding-top:1.45rem;font-size:clamp(1.4rem,4vw,1.85rem);line-height:1.2}.lesson-prose h3{font-family:var(--font-display);margin:1.7rem 0 .6rem;font-size:1.18rem;line-height:1.3}.lesson-prose h4{color:var(--muted);font-family:var(--font-mono);letter-spacing:.1em;text-transform:uppercase;margin:1.35rem 0 .5rem;font-size:.72rem}.lesson-prose p{margin:.85rem 0}.lesson-prose ul,.lesson-prose ol{margin:.85rem 0;padding-left:1.4rem}.lesson-prose li{margin:.35rem 0}.lesson-prose a{min-height:44px;color:var(--accent-readable);align-items:center;display:inline-flex}.lesson-prose blockquote{border-left:3px solid var(--accent);color:var(--muted);font-family:var(--font-serif);margin:1.4rem 0;padding:.25rem 0 .25rem 1rem;font-size:1.05rem}.lesson-prose code{border:1px solid var(--border);background:var(--surface-soft);font-family:var(--font-mono);border-radius:.3rem;padding:.08rem .28rem;font-size:.9em}.lesson-prose pre{border:1px solid var(--border);background:var(--surface-soft);border-radius:.6rem;max-width:100%;padding:1rem;overflow-x:auto}.lesson-prose pre code{background:0 0;border:0;padding:0}.lesson-prose img,.lesson-prose svg,.lesson-prose canvas,.lesson-prose figure,.lesson-prose table{max-width:100%}.lesson-prose img,.lesson-prose svg,.lesson-prose canvas{height:auto}.lesson-prose table{border-collapse:collapse;width:100%;display:block;overflow-x:auto}.lesson-prose th,.lesson-prose td{border:1px solid var(--border);text-align:left;padding:.6rem}.lesson-progress{gap:1rem;margin-top:3rem;padding:1rem;display:grid}.lesson-progress h2{font-family:var(--font-display);margin:0;font-size:1.35rem}.lesson-progress p:not(.eyebrow){color:var(--muted);margin:.4rem 0 0;line-height:1.55}.progress-actions{gap:.8rem;display:grid}.progress-actions .button[data-state=complete]{border-color:var(--color-success);color:var(--fg);background:color-mix(in oklab, var(--color-success) 12%, var(--surface))}.lesson-mastery{min-width:0}.mastery-label{color:var(--muted);justify-content:space-between;gap:.75rem;margin-bottom:.35rem;font-size:.78rem;display:flex}.mastery-label strong{color:var(--fg)}.lesson-navigation{border-top:1px solid var(--border);gap:.75rem;margin-top:1rem;padding-top:1.5rem;display:grid}.lesson-nav-link{border:1px solid var(--border);min-height:64px;color:var(--fg);background:var(--surface);border-radius:.65rem;align-items:center;gap:.65rem;padding:.8rem;text-decoration:none;display:flex}.lesson-nav-link:hover,.lesson-nav-link:focus-visible{border-color:var(--accent)}.lesson-nav-link small,.lesson-nav-link strong{display:block}.lesson-nav-link small{color:var(--muted);font-family:var(--font-mono);letter-spacing:.08em;text-transform:uppercase;font-size:.65rem}.lesson-nav-link strong{margin-top:.2rem;font-size:.88rem}.lesson-nav-link.next{text-align:right;justify-content:flex-end}@media (width>=640px){.lesson-article{padding:2.25rem 1.5rem 5rem}.lesson-progress{grid-template-columns:1fr minmax(13rem,.7fr);align-items:end;padding:1.25rem}.lesson-navigation{grid-template-columns:repeat(2,minmax(0,1fr))}.lesson-nav-link.next{grid-column:2}}.reader-bar{border-bottom:1px solid var(--border);justify-content:space-between;align-items:center;gap:1rem;margin-bottom:1.25rem;padding-bottom:.6rem;display:flex}.reader-count{color:var(--muted);font-family:var(--font-mono);margin:0;font-size:.7rem}.reader-count strong{color:var(--fg)}.reader-dots{flex-wrap:wrap;gap:.3rem;margin:0;padding:0;list-style:none;display:flex}.reader-dots .reader-dot{cursor:pointer;background:0 0;border:0;width:22px;height:22px;padding:0;display:block;position:relative}.reader-dots .reader-dot:after{content:"";background:var(--border);border-radius:50%;position:absolute;inset:8px}.reader-dots .reader-dot[data-active=true]:after{background:var(--accent)}.chapter-page{display:block}.chapter-page[hidden]{display:none}.reader-nav{border-top:1px solid var(--border);grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:.6rem;margin-top:1.75rem;padding-top:1rem;display:grid}.reader-prev,.reader-next{min-height:48px}.reader-next-label{color:var(--muted);text-align:center;text-overflow:ellipsis;white-space:nowrap;margin:0;font-size:.72rem;line-height:1.3;overflow:hidden}@media (width>=900px){.chapter-page.is-spread{grid-template-columns:minmax(0,5fr) minmax(0,6fr);align-items:start;gap:2rem;display:grid}.chapter-page.is-spread .page-media{position:sticky;top:1.5rem}}@media print{.reader-bar,.reader-nav{display:none}.chapter-page[hidden]{display:block!important}}.lesson-prose .sim-controls{border-top:1px solid var(--border);margin-top:.75rem;padding-top:.6rem}.lesson-prose .sim-controls>summary{min-height:44px;color:var(--muted);font-family:var(--font-mono);cursor:pointer;align-items:center;font-size:.72rem;display:flex}.lesson-prose .sim-controls[open]>summary{color:var(--fg)}.lesson-prose .road-sim>header{clip-path:inset(50%);white-space:nowrap;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.lesson-prose .road-sim .readouts{flex-wrap:wrap;gap:.25rem .9rem;display:flex}.lesson-prose .sim-more{margin-top:.35rem}