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1.25rem;font-style:normal;color:var(--color-text)}.module-prose[data-astro-cid-ail74xst] .deep-dive{margin:1.5rem 0;border:1px solid var(--color-border);border-radius:8px;overflow:hidden}.module-prose[data-astro-cid-ail74xst] .deep-dive-trigger{cursor:pointer;padding:.85rem 1.25rem;display:flex;align-items:center;gap:.75rem;list-style:none;user-select:none;background:var(--color-bg-card);transition:background-color .15s}.module-prose[data-astro-cid-ail74xst] .deep-dive-trigger:hover{background:var(--color-bg-card-hover)}.module-prose[data-astro-cid-ail74xst] .deep-dive-trigger::-webkit-details-marker{display:none}.module-prose[data-astro-cid-ail74xst] .deep-dive-trigger:before{content:"+";display:inline-flex;align-items:center;justify-content:center;width:22px;height:22px;border-radius:4px;background:var(--color-border);color:var(--color-text-muted);font-size:16px;font-weight:500;flex-shrink:0;font-family:system-ui,-apple-system,sans-serif;transition:background-color .15s}.module-prose[data-astro-cid-ail74xst] .deep-dive[open]>.deep-dive-trigger:before{content:"−";background:var(--color-green-dim);color:var(--color-green)}.module-prose[data-astro-cid-ail74xst] .deep-dive-trigger h2,.module-prose[data-astro-cid-ail74xst] .deep-dive-trigger h3{margin:0!important;padding:0!important;font-size:.95rem!important;font-weight:600;border:none!important;flex-grow:1}.module-prose[data-astro-cid-ail74xst] .deep-dive-trigger .heading-link{display:none}.module-prose[data-astro-cid-ail74xst] .deep-dive[open]>.deep-dive-trigger{border-bottom:1px solid var(--color-border)}.module-prose[data-astro-cid-ail74xst] .deep-dive>:not(.deep-dive-trigger){margin-left:1.5rem;margin-right:1.5rem}.module-prose[data-astro-cid-ail74xst] .deep-dive>:not(.deep-dive-trigger):first-of-type{margin-top:1rem}.module-prose[data-astro-cid-ail74xst] .deep-dive>:not(.deep-dive-trigger):last-child{margin-bottom:1rem}.module-prose[data-astro-cid-ail74xst] .challenge-block{margin:2rem 0;padding:1.5rem;border-radius:8px;border:1px solid var(--color-border);background:var(--color-bg-card)}.module-prose[data-astro-cid-ail74xst] .challenge-label{font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--color-gold);margin-bottom:.5rem}.module-prose[data-astro-cid-ail74xst] .challenge-question{font-size:.95rem;font-weight:600;line-height:1.5;margin-bottom:1rem;color:var(--color-text)}.module-prose[data-astro-cid-ail74xst] .challenge-options{display:flex;flex-direction:column;gap:.4rem}.module-prose[data-astro-cid-ail74xst] .challenge-opt{appearance:none;background:var(--color-bg);border:1px solid var(--color-border);border-radius:6px;padding:.6rem .85rem;font-size:.88rem;line-height:1.45;color:var(--color-text);cursor:pointer;text-align:left;font-family:inherit;transition:border-color .15s,background-color .15s}.module-prose[data-astro-cid-ail74xst] .challenge-opt:hover{border-color:var(--color-green)}.module-prose[data-astro-cid-ail74xst] .answered .challenge-opt{cursor:default;pointer-events:none}.module-prose[data-astro-cid-ail74xst] .answered .challenge-opt:not(.correct):not(.incorrect){opacity:.35}.module-prose[data-astro-cid-ail74xst] .challenge-opt.correct{border-color:var(--color-green);background:var(--color-green-dim);color:var(--color-green);font-weight:600}.module-prose[data-astro-cid-ail74xst] .challenge-opt.incorrect{border-color:var(--color-red);background:var(--color-red-dim);color:var(--color-red)}.module-prose[data-astro-cid-ail74xst] .challenge-explanation{display:none;margin-top:.85rem;padding:.75rem 1rem;border-radius:6px;background:var(--color-bg);border-left:2px solid var(--color-green);font-size:.85rem;line-height:1.55;color:var(--color-text-muted)}.module-prose[data-astro-cid-ail74xst] .challenge-explanation.visible{display:block}.back-to-top[data-astro-cid-ail74xst]{position:fixed;bottom:2rem;right:2rem;width:36px;height:36px;border-radius:50%;background:var(--color-bg-card);border:1px solid var(--color-border);color:var(--color-text-muted);font-size:1rem;cursor:pointer;opacity:0;pointer-events:none;transition:opacity .2s,border-color .15s;z-index:40}.back-to-top[data-astro-cid-ail74xst]:hover{border-color:var(--color-green);color:var(--color-green)}.back-to-top.visible{opacity:1;pointer-events:auto}@media(max-width:600px){.module-prose[data-astro-cid-ail74xst] .deep-dive>:not(.deep-dive-trigger){margin-left:.75rem;margin-right:.75rem}.module-prose[data-astro-cid-ail74xst] .deep-dive-trigger{padding:.75rem 1rem;gap:.6rem}.module-prose[data-astro-cid-ail74xst] .challenge-block{padding:1.25rem 1rem}.module-prose[data-astro-cid-ail74xst] .challenge-opt{padding:.55rem .75rem;font-size:.82rem}}