body{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;margin:0}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}:root{--bg-main:#f8fafc;--bg-card:#fff;--text-primary:#0f172a;--text-secondary:#64748b;--accent:#4f46e5;--correct:#16a34a;--wrong:#dc2626;--border:#e2e8f0;--hover:#4338ca;--shadow-sm:0 2px 6px #0000000f;--shadow-md:0 8px 20px #00000014;--transition:all 0.2s ease}*{box-sizing:border-box;margin:0;padding:0}body{background:#f8fafc;background:var(--bg-main);color:#0f172a;color:var(--text-primary);font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.5;min-height:100vh;padding:1.5rem}.App,.quiz{margin:0 auto;max-width:780px;padding:1rem}.questWievNormal,.questWievRight,.questWievWrong{background:#fff;background:var(--bg-card);border:1px solid #e2e8f0;border:1px solid var(--border);border-radius:12px;box-shadow:0 2px 6px #0000000f;box-shadow:var(--shadow-sm);margin-bottom:1.5rem;padding:1.5rem 1.8rem;transition:all .2s ease;transition:var(--transition)}.questWievRight{background:color-mix(in srgb,#16a34a 6%,#fff);background:color-mix(in srgb,var(--correct) 6%,#fff);border-color:#16a34a;border-color:var(--correct)}.questWievWrong{background:color-mix(in srgb,#dc2626 6%,#fff);background:color-mix(in srgb,var(--wrong) 6%,#fff);border-color:#dc2626;border-color:var(--wrong)}.questWievNormal:hover{box-shadow:0 8px 20px #00000014;box-shadow:var(--shadow-md);transform:translateY(-2px)}h2{color:#0f172a;color:var(--text-primary);font-size:1.32rem;font-weight:600;line-height:1.4;margin-bottom:1.2rem}.answerBlock{align-items:center;background:#f1f5f9;border:1.5px solid #0000;border-radius:10px;cursor:pointer;display:flex;gap:1rem;margin:.5rem 0;padding:.9rem 1.1rem;transition:all .2s 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#4f46e559;color:#fff;cursor:pointer;display:block;font-size:1.1rem;font-weight:600;margin:2rem auto 1rem;padding:.9rem 2.2rem;transition:all .2s ease;transition:var(--transition)}button:hover:not(:disabled){background:#4338ca;background:var(--hover);box-shadow:0 10px 20px #4f46e573;transform:translateY(-2px)}button:disabled{background:#cbd5e1;box-shadow:none;cursor:not-allowed;opacity:.7}.buttonLinkBar{align-items:center;background:#4f46e5;background:var(--accent);border:none;border-radius:50%;box-shadow:0 8px 20px #00000014;box-shadow:var(--shadow-md);color:#fff;cursor:pointer;display:flex;font-size:1.8rem;font-weight:700;height:54px;justify-content:center;position:fixed;right:1.2rem;top:1.2rem;transition:all .2s ease;transition:var(--transition);width:54px;z-index:1000}.buttonLinkBar:hover{background:#4338ca;background:var(--hover);transform:scale(1.08)}.openLinkBar{-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#f8fafcfa;border-left:1px solid #e2e8f0;border-left:1px solid var(--border);height:100%;overflow:hidden;position:fixed;right:0;top:0;transition:width .4s ease;width:0;z-index:999}.openLinkBar.open{width:320px}.navLinkBar{display:flex;flex-direction:column;gap:1.4rem;padding:6rem 2.5rem 2rem}.linkBar{border-radius:10px;color:#0f172a;color:var(--text-primary);font-size:1.25rem;font-weight:500;padding:.8rem 1.2rem;text-decoration:none;transition:all .2s ease;transition:var(--transition)}.linkBar:hover{background:#e0e7ff;color:#4f46e5;color:var(--accent);transform:translateX(8px)}.quiz-layout{display:flex;height:100vh;overflow:hidden}.left-panel{background:#f8fafc;border-right:1px solid #e2e8f0;border-right:1px solid var(--border)}.left-panel,.right-panel{flex:1 1;overflow-y:auto;padding:2rem 2.5rem}.right-panel{background:#fff}.sticky-header{background:#f8fafc;border-bottom:1px solid #e2e8f0;border-bottom:1px solid var(--border);margin-bottom:1.5rem;padding:1rem 0;position:-webkit-sticky;position:sticky;top:0;z-index:10}.scrollable-text{color:#1e293b;font-size:1.05rem;line-height:1.7}.scrollable-text p{margin-bottom:1.4rem}.questions-container{margin:0 auto;max-width:700px}@media (max-width:992px){.quiz-layout{flex-direction:column}.left-panel,.right-panel{flex:none;height:auto;overflow-y:visible}.left-panel{border-bottom:1px solid #e2e8f0;border-bottom:1px solid var(--border);border-right:none}}@media (max-width:640px){.questWievNormal,.questWievRight,.questWievWrong{padding:1.3rem 1.4rem}h2{font-size:1.2rem}.answerBlock{padding:.8rem 1rem}.openLinkBar.open{width:100%}.navLinkBar{padding-top:7rem}}.hero-section{align-items:center;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;display:flex;height:100vh;justify-content:center;min-height:700px;overflow:hidden;position:relative}.hero-overlay{background:#0f172aad;inset:0;position:absolute;z-index:1}.hero-content{max-width:900px;padding:2rem;position:relative;text-align:center;width:100%;z-index:2}.hero-card{animation:fadeInUp 1s ease-out;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#fffffff5;border:1px solid #ffffff4d;border-radius:20px;box-shadow:0 20px 50px #00000040;padding:3.5rem 2.5rem}.hero-title{color:#0f172a;color:var(--text-primary);font-size:3.2rem;font-weight:800;letter-spacing:-1px;margin-bottom:.5rem}.hero-subtitle{color:#4f46e5;color:var(--accent);font-size:1.9rem;font-weight:600;margin-bottom:2rem}.hero-info{color:#64748b;color:var(--text-secondary);font-size:1.15rem;line-height:1.6;margin-bottom:2rem}.hero-author{color:#0f172a;color:var(--text-primary);font-size:1.3rem;font-weight:600;margin-bottom:.4rem}.hero-city-year{font-style:italic;margin-top:.8rem}.hero-description{color:#334155;font-size:1.25rem;line-height:1.6;margin:0 auto 2.5rem;max-width:680px}.hero-buttons{display:flex;flex-wrap:wrap;gap:1.2rem;justify-content:center}.hero-btn{align-items:center;background:#4f46e5;background:var(--accent);border-radius:12px;box-shadow:0 6px 20px #4f46e54d;color:#fff;display:inline-flex;font-size:1.1rem;font-weight:600;justify-content:center;padding:1rem 1.8rem;text-decoration:none;transition:all .3s ease}.hero-btn:hover{background:#4338ca;background:var(--hover);box-shadow:0 12px 30px #4338ca66;transform:translateY(-4px)}@keyframes fadeInUp{0%{opacity:0;transform:translateY(40px)}to{opacity:1;transform:translateY(0)}}@media (max-width:768px){.hero-title{font-size:2.6rem}.hero-subtitle{font-size:1.6rem}.hero-card{padding:2.5rem 1.8rem}.hero-buttons{flex-direction:column;gap:1rem}}
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