.module-nav[data-astro-cid-tyt6eby2]{margin-top:3rem;display:grid;grid-template-columns:1fr 1fr;align-items:stretch;gap:1rem}.module-nav-card[data-astro-cid-tyt6eby2]{display:flex;flex-direction:column;justify-content:center;gap:.3rem;padding:1.25rem;border:1px solid var(--color-border);border-radius:10px;text-decoration:none;color:inherit;transition:border-color .15s}.module-nav-card[data-astro-cid-tyt6eby2]:hover{border-color:var(--color-primary)}.module-nav-label[data-astro-cid-tyt6eby2]{font-size:.7rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--color-primary)}.module-nav-title[data-astro-cid-tyt6eby2]{font-size:.95rem;font-weight:600;line-height:1.3}@media(max-width:600px){.module-nav[data-astro-cid-tyt6eby2]{grid-template-columns:1fr}.module-nav-card[data-astro-cid-tyt6eby2]{padding:.85rem 1rem}.module-nav-title[data-astro-cid-tyt6eby2]{font-size:.9rem}}.module-content[data-astro-cid-tyt6eby2] .kc-card{margin-top:2rem;padding:1.5rem;border-radius:10px;background:#f0f7ff;border:1px solid #d0e3f7}.module-content[data-astro-cid-tyt6eby2] .kc-header{display:flex;align-items:center;gap:.5rem;margin-bottom:.75rem}.module-content[data-astro-cid-tyt6eby2] .kc-icon{display:flex;align-items:center;justify-content:center;width:24px;height:24px;border-radius:50%;background:var(--color-primary);color:#fff;font-size:14px;font-weight:700;flex-shrink:0;font-family:inherit}.module-content[data-astro-cid-tyt6eby2] .kc-label{font-size:.82rem;font-weight:600;color:var(--color-primary);letter-spacing:.02em;margin:0}.module-content[data-astro-cid-tyt6eby2] .kc-question{font-size:.95rem;font-weight:600;line-height:1.5;margin-bottom:.85rem;color:var(--color-text)}.module-content[data-astro-cid-tyt6eby2] .kc-options{display:flex;flex-direction:column;gap:.5rem}.module-content[data-astro-cid-tyt6eby2] .kc-option{appearance:none;background:#fff;border:1.5px solid #d0e3f7;border-radius:8px;padding:.65rem .85rem;font-size:.9rem;line-height:1.45;color:var(--color-text);cursor:pointer;text-align:left;font-family:inherit;transition:border-color .15s,background-color .15s,box-shadow .15s;display:flex;align-items:flex-start;gap:.65rem}.module-content[data-astro-cid-tyt6eby2] .kc-option:hover{border-color:var(--color-primary);background:#fff;box-shadow:0 1px 4px #0066cc1a}.module-content[data-astro-cid-tyt6eby2] .kc-letter{display:flex;align-items:center;justify-content:center;width:24px;height:24px;border-radius:50%;background:#e8f0fe;color:var(--color-primary);font-size:.78rem;font-weight:700;flex-shrink:0;transition:background-color .15s,color .15s}.module-content[data-astro-cid-tyt6eby2] .kc-option:hover .kc-letter{background:var(--color-primary);color:#fff}.module-content[data-astro-cid-tyt6eby2] .kc-option-text{padding-top:2px}.module-content[data-astro-cid-tyt6eby2] .kc-answered .kc-option{cursor:default;pointer-events:none}.module-content[data-astro-cid-tyt6eby2] .kc-answered .kc-option:not(.kc-correct):not(.kc-incorrect){opacity:.45;border-color:#d0e3f7;background:#f8fafc}.module-content[data-astro-cid-tyt6eby2] .kc-answered .kc-option:not(.kc-correct):not(.kc-incorrect) .kc-letter{background:#e8e8e8;color:#999}.module-content[data-astro-cid-tyt6eby2] .kc-option.kc-correct{border-color:#15803d;background:#f0fdf4}.module-content[data-astro-cid-tyt6eby2] .kc-option.kc-correct .kc-letter{background:#15803d;color:#fff}.module-content[data-astro-cid-tyt6eby2] .kc-option.kc-incorrect{border-color:#dc2626;background:#fef2f2}.module-content[data-astro-cid-tyt6eby2] .kc-option.kc-incorrect .kc-letter{background:#dc2626;color:#fff}.module-content[data-astro-cid-tyt6eby2] .kc-explanation{display:none;margin-top:.85rem;padding:.75rem 1rem;border-radius:8px;background:#fff;border-left:3px solid #15803d;font-size:.88rem;line-height:1.55;color:var(--color-text)}.module-content[data-astro-cid-tyt6eby2] .kc-explanation--visible{display:block}@media(max-width:600px){.module-content[data-astro-cid-tyt6eby2] .kc-card{padding:1.25rem 1rem}.module-content[data-astro-cid-tyt6eby2] .kc-option{padding:.6rem .75rem;font-size:.85rem;gap:.5rem}.module-content[data-astro-cid-tyt6eby2] .kc-question{font-size:.9rem}}.toc--preview[data-astro-cid-tyt6eby2] span[data-astro-cid-tyt6eby2]{color:var(--color-text-muted)}.module-content--preview[data-astro-cid-tyt6eby2]{max-height:800px;overflow:hidden;position:relative}.module-content--preview[data-astro-cid-tyt6eby2]:after{content:"";position:absolute;bottom:0;left:0;right:0;height:200px;background:linear-gradient(to bottom,transparent,var(--color-bg, #fff));pointer-events:none}.preview-paywall[data-astro-cid-tyt6eby2]{text-align:center;padding:2rem 1.5rem 3rem;margin-top:-1rem}.preview-paywall-inner[data-astro-cid-tyt6eby2]{max-width:480px;margin:0 auto}.preview-paywall-title[data-astro-cid-tyt6eby2]{font-size:1.4rem;font-weight:700;margin-bottom:.75rem}.preview-paywall-text[data-astro-cid-tyt6eby2]{color:var(--color-text-muted);margin-bottom:1.5rem;line-height:1.6}.paywall-options[data-astro-cid-tyt6eby2]{display:flex;gap:.75rem;justify-content:center;flex-wrap:wrap;margin-bottom:1rem}.paywall-btn-primary[data-astro-cid-tyt6eby2],.paywall-btn-secondary[data-astro-cid-tyt6eby2]{display:inline-block;padding:.85rem 1.5rem;font-size:.95rem;font-weight:600;text-decoration:none;border-radius:6px;border:2px solid var(--color-primary);min-width:200px;box-sizing:border-box}.paywall-btn-primary[data-astro-cid-tyt6eby2]{background:var(--color-primary);color:#fff}.paywall-btn-secondary[data-astro-cid-tyt6eby2]{background:transparent;color:var(--color-primary)}.paywall-note[data-astro-cid-tyt6eby2]{font-size:.85rem;color:var(--color-text-muted);line-height:1.5;max-width:440px;margin:0 auto .75rem}.paywall-guarantee[data-astro-cid-tyt6eby2]{font-size:.8rem;color:var(--color-text-muted);margin-top:.5rem}@media(max-width:520px){.paywall-options[data-astro-cid-tyt6eby2]{flex-direction:column;align-items:center}.paywall-btn-primary[data-astro-cid-tyt6eby2],.paywall-btn-secondary[data-astro-cid-tyt6eby2]{width:100%;max-width:320px}}