html{scroll-behavior:smooth}body{margin:0;display:flex;flex-direction:column;min-height:100vh;background-color:#fff;color:#1e293b;font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#root{flex:1;width:100%}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media(prefers-color-scheme:light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}*{margin:0;padding:0;box-sizing:border-box}:root{--primary-dark: #0f172a;--primary-navy: #1e3a8a;--accent-blue: #0ea5e9;--text-primary: #1e293b;--text-secondary: #64748b;--text-light: #f1f5f9;--bg-light: #f8fafc;--bg-white: #ffffff;--border-color: #e2e8f0;--spacing-xs: .5rem;--spacing-sm: 1rem;--spacing-md: 1.5rem;--spacing-lg: 2rem;--spacing-xl: 3rem;--spacing-2xl: 4rem;--spacing-3xl: 6rem;--transition: all .3s ease}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;color:var(--text-primary);background:var(--bg-white);line-height:1.6}.app{width:100%;overflow-x:hidden;display:flex;flex-direction:column;scroll-snap-type:y mandatory;scroll-behavior:smooth}.container{max-width:1200px;margin:0 auto;padding:0 var(--spacing-lg)}.section{min-height:100vh;padding:var(--spacing-3xl) 0;display:flex;flex-direction:column;justify-content:center;scroll-snap-align:start;scroll-snap-stop:always}.section.dark{background:var(--primary-dark);color:var(--text-light)}.section.light{background:var(--bg-light)}h1{font-size:3.5rem;font-weight:700;line-height:1.2;margin-bottom:var(--spacing-lg)}h2{font-size:2.5rem;font-weight:700;line-height:1.3;margin-bottom:var(--spacing-lg)}h3{font-size:1.5rem;font-weight:600;margin-bottom:var(--spacing-md)}p{font-size:1rem;line-height:1.8;margin-bottom:var(--spacing-md)}.subtitle{font-size:1.25rem;color:var(--text-secondary);line-height:1.8}.small-text{font-size:.875rem;color:var(--text-secondary)}.btn{padding:var(--spacing-sm) var(--spacing-lg);border:none;border-radius:.375rem;font-size:1rem;font-weight:600;cursor:pointer;transition:var(--transition);text-decoration:none;display:inline-block;text-align:center;white-space:nowrap}.btn-primary{background:var(--accent-blue);color:#fff}.btn-primary:hover{background:#0284c7;transform:translateY(-2px);box-shadow:0 8px 16px #0ea5e94d}.btn-secondary{background:transparent;color:var(--accent-blue);border:2px solid var(--accent-blue)}.btn-secondary:hover{background:var(--accent-blue);color:#fff}.grid{display:grid;gap:var(--spacing-lg)}.grid-2{grid-template-columns:1fr 1fr}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}.card{background:var(--bg-white);border:1px solid var(--border-color);border-radius:.5rem;padding:var(--spacing-lg);transition:var(--transition)}.card:hover{border-color:var(--accent-blue);box-shadow:0 12px 24px #0ea5e91a}@media(max-width:768px){h1{font-size:2.5rem}h2{font-size:1.875rem}.subtitle{font-size:1.125rem}.container{padding:0 var(--spacing-md)}.section{padding:var(--spacing-2xl) 0}.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}}@media(max-width:480px){h1{font-size:2rem}h2{font-size:1.5rem}.section{padding:var(--spacing-xl) 0}.container{padding:0 var(--spacing-sm)}}.footer{background:var(--primary-dark);color:var(--text-light);border-top:1px solid rgba(255,255,255,.1)}.footer-content{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--spacing-2xl);margin-bottom:var(--spacing-2xl);padding:var(--spacing-3xl) 0 var(--spacing-2xl) 0;border-bottom:1px solid rgba(255,255,255,.1)}.footer-section h4{font-size:1rem;font-weight:600;margin-bottom:var(--spacing-md);color:#fff}.footer-section p{color:#cbd5e1;font-size:.9375rem;margin-bottom:0}.footer-section ul{list-style:none}.footer-section li{margin-bottom:var(--spacing-sm)}.footer-section a{color:#cbd5e1;text-decoration:none;font-size:.9375rem;transition:var(--transition)}.footer-section a:hover{color:#0ea5e9}.footer-bottom{text-align:center;color:#64748b;font-size:.875rem}@media(max-width:768px){.footer-content{grid-template-columns:repeat(2,1fr);gap:var(--spacing-lg)}}@media(max-width:480px){.footer-content{grid-template-columns:1fr}}.aptitude{min-height:100vh;background:linear-gradient(135deg,#667eea,#764ba2);padding:2rem}.aptitude .container{max-width:1200px;margin:0 auto}.aptitude h1{color:#fff;text-align:center;font-size:2.5rem;margin-bottom:2rem}.test-info{background:#fff;border-radius:10px;padding:3rem;box-shadow:0 10px 40px #0003;text-align:center}.test-info p{font-size:1.1rem;margin-bottom:1.5rem;color:#333}.test-details{background:#f8f9fa;padding:2rem;border-radius:8px;margin:2rem 0;text-align:left}.test-details p{font-size:1rem;margin-bottom:1rem;color:#555}.test-details strong{color:#667eea}.start-button{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;padding:1rem 3rem;font-size:1.1rem;border-radius:8px;cursor:pointer;transition:transform .2s,box-shadow .2s;margin-top:1rem}.start-button:hover{transform:translateY(-2px);box-shadow:0 10px 25px #667eea66}.test-container{background:#fff;border-radius:10px;overflow:hidden;box-shadow:0 10px 40px #0003;max-width:1000px;margin:0 auto}.test-header{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:1.5rem 2rem;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1rem}.header-left h2{margin:0;font-size:1.5rem}.header-left p{margin:.25rem 0 0;opacity:.9;font-size:.9rem}.header-right{display:flex;gap:2rem;align-items:center}.timer{background:#fff3;padding:.8rem 1.5rem;border-radius:8px;text-align:center}.timer.warning{background:#ff64644d;animation:pulse 1s infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.7}}.timer-label{display:block;font-size:.85rem;opacity:.9;margin-bottom:.25rem}.timer-value{display:block;font-size:1.5rem;font-weight:700;font-family:Courier New,monospace}.progress-info{background:#fff3;padding:.8rem 1.5rem;border-radius:8px}.test-content{padding:2rem}.question-section{margin-bottom:2rem}.question-text{color:#333;font-size:1.3rem;margin-bottom:1.5rem;font-weight:600}.options-container{display:grid;gap:1rem;margin-bottom:2rem}.option-button{background:#fff;border:2px solid #e0e0e0;padding:1rem 1.5rem;border-radius:8px;text-align:left;cursor:pointer;transition:all .3s;display:flex;align-items:center;gap:1rem}.option-button:hover{border-color:#667eea;background:#f0f4ff}.option-button.selected{border-color:#667eea;background:#e8ecff;font-weight:600}.option-label{color:#667eea;font-weight:700;min-width:30px}.option-value{color:#333;font-size:1.05rem}.test-navigation{display:flex;align-items:center;gap:1.5rem;margin:2rem 0;flex-wrap:wrap}.nav-button{background:#667eea;color:#fff;border:none;padding:.8rem 1.5rem;border-radius:8px;cursor:pointer;transition:background .3s}.nav-button:hover:not(:disabled){background:#764ba2}.nav-button:disabled{background:#ccc;cursor:not-allowed}.question-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(40px,1fr));gap:.5rem;flex:1;min-width:200px}.grid-button{width:40px;height:40px;border:2px solid #ddd;border-radius:6px;background:#fff;color:#333;font-weight:600;cursor:pointer;transition:all .3s}.grid-button:hover{border-color:#667eea;color:#667eea}.grid-button.answered{background:#e8f4f8;border-color:#4caf50;color:#4caf50}.grid-button.current{background:#667eea;border-color:#667eea;color:#fff}.test-submit{text-align:center;margin-top:2rem;padding-top:2rem;border-top:2px solid #eee}.submit-button{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;padding:1rem 2rem;font-size:1.1rem;border-radius:8px;cursor:pointer;transition:transform .2s,box-shadow .2s}.submit-button:hover{transform:translateY(-2px);box-shadow:0 10px 25px #667eea66}.result-card{background:#fff;border-radius:10px;padding:3rem;text-align:center;box-shadow:0 10px 40px #0003}.result-card h2{color:#333;font-size:2rem;margin-bottom:2rem}.score-display{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:2rem;border-radius:8px;margin-bottom:2rem}.score-text{font-size:1.3rem;margin:.5rem 0}.score-value{font-size:2.5rem;font-weight:700;display:inline-block}.percentage-text{font-size:1.3rem;margin:.5rem 0}.percentage-value{font-size:2rem;font-weight:700;display:inline-block}.result-details{background:#f8f9fa;padding:1.5rem;border-radius:8px;text-align:left;margin-bottom:2rem}.result-details p{font-size:1.05rem;margin:.8rem 0;color:#555}.result-details strong{color:#333}.review-section{margin-top:2rem;padding-top:2rem;border-top:2px solid #eee}.review-section h3{color:#333;font-size:1.5rem;margin-bottom:1.5rem;text-align:center}.questions-review{display:grid;gap:1.5rem;margin-bottom:2rem}.question-review-item{border:2px solid #e0e0e0;border-radius:8px;padding:1.5rem;background:#fff}.question-review-item.correct{border-color:#4caf50;background:#f1f8f4}.question-review-item.incorrect{border-color:#f44336;background:#fef5f5}.question-review-item.unanswered{border-color:#ff9800;background:#fff8f0}.review-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem;flex-wrap:wrap;gap:1rem}.review-header h4{color:#333;font-size:1.1rem;margin:0}.status-badge{padding:.4rem .8rem;border-radius:20px;font-weight:600;font-size:.9rem}.status-badge.correct{background:#4caf50;color:#fff}.status-badge.incorrect{background:#f44336;color:#fff}.status-badge.unanswered{background:#ff9800;color:#fff}.review-question{color:#333;font-size:1.1rem;margin:1rem 0;font-weight:500}.review-answer-section{display:grid;gap:1rem}.answer-item{padding:1rem;border-radius:6px;display:flex;align-items:center;gap:1rem}.answer-item strong{min-width:150px;color:#555;font-weight:600}.answer-value{padding:.5rem 1rem;border-radius:4px;background:#fff;border:1px solid #ddd;font-weight:600;flex:1}.selected-wrong{background:#ffebee;border:1px solid #ef5350}.selected-wrong .answer-value{color:#d32f2f;border-color:#d32f2f}.correct-answer{background:#e8f5e9;border:1px solid #81c784}.correct-answer .answer-value{color:#388e3c;border-color:#388e3c}.missed-answer{background:#fff3e0;border:1px solid #ffb74d}.missed-answer .answer-value{color:#e65100;border-color:#e65100}.restart-button{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;padding:1rem 2.5rem;font-size:1.1rem;border-radius:8px;cursor:pointer;transition:transform .2s,box-shadow .2s}.restart-button:hover{transform:translateY(-2px);box-shadow:0 10px 25px #667eea66}@media(max-width:768px){.test-header{flex-direction:column;align-items:flex-start}.header-right{flex-direction:column;width:100%}.timer,.progress-info{width:100%;text-align:center}.test-navigation{flex-direction:column}.question-grid{grid-template-columns:repeat(auto-fit,minmax(35px,1fr))}.aptitude h1{font-size:1.8rem}.test-info{padding:1.5rem}}