:root{--primary-color: #007bff;--primary-color-dark: #0056b3;--secondary-color: #f0f6ff;--text-color: #212529;--light-text-color: #6c757d;--border-color: #dee2e6;--background-color: #f8f9fa;--white: #fff;--shadow-sm: 0 1px 3px rgba(0,0,0,.06);--shadow-md: 0 4px 12px rgba(0,0,0,.1);--border-radius: 8px}body{font-family:Lato,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background-color:var(--background-color);color:var(--text-color);margin:0;padding:1rem;line-height:1.6}.container{max-width:960px;margin:2rem auto;background-color:var(--white);box-shadow:var(--shadow-md);border-radius:var(--border-radius);padding:2rem}header h1{font-family:Roboto Slab,serif;color:var(--primary-color-dark);text-align:center;font-size:2.5rem;margin:0 0 2.5rem}.calculator-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem 2rem}.input-group{display:flex;flex-direction:column}.input-group label{font-weight:700;margin-bottom:.5rem;color:var(--text-color)}.input-group input{padding:.8rem 1rem;border:1px solid var(--border-color);border-radius:var(--border-radius);font-size:1rem;transition:border-color .2s ease,box-shadow .2s ease}.input-group input:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px #007bff40}.input-group .help-text{font-size:.85rem;color:var(--light-text-color);margin-top:.5rem}.z-score-display{margin-top:.75rem;padding:.5rem .75rem;background-color:var(--secondary-color);border-radius:var(--border-radius);border:1px solid var(--border-color);text-align:center;font-size:.9rem;color:var(--primary-color-dark)}.z-score-display strong{font-family:Roboto Slab,serif;font-weight:700;margin-left:.5rem}.result-section{grid-column:1 / -1;text-align:center;background:var(--secondary-color);padding:2rem;border-radius:var(--border-radius);margin-top:1.5rem;border:1px solid var(--primary-color)}.result-section .result-label{font-size:1.25rem;color:var(--primary-color-dark);font-weight:700}.result-section .result-value{font-family:Roboto Slab,serif;font-size:3.8rem;font-weight:700;color:var(--primary-color);margin:.5rem 0}.result-section .help-text{font-size:.9rem;color:var(--light-text-color)}.section-title{font-family:Roboto Slab,serif;font-size:1.75rem;color:var(--primary-color-dark);border-bottom:2px solid var(--primary-color);padding-bottom:.5rem;margin:3.5rem 0 1.5rem}.scenarios-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem}.scenario-card{padding:1.5rem;border:1px solid var(--border-color);border-radius:var(--border-radius);background-color:var(--white);box-shadow:var(--shadow-sm);transition:transform .2s ease,box-shadow .2s ease}.scenario-card:hover{transform:translateY(-3px);box-shadow:0 2px 6px #00000014}.scenario-card h4{margin-top:0;color:var(--primary-color-dark)}.info-section p,.info-section li{font-size:1.1rem;color:#495057}.info-section .formula{background-color:#e9ecef;padding:1.5rem;border-radius:var(--border-radius);margin:1rem 0;border:1px solid var(--border-color);display:flex;flex-direction:column;align-items:center;gap:1rem;overflow-x:auto}.faq-content{display:flex;flex-direction:column;gap:1.5rem}.faq-item h4{margin-top:0;margin-bottom:.5rem;color:var(--primary-color-dark);font-size:1.2rem}.faq-item p{margin:0;font-size:1.1rem;color:#495057}footer{text-align:center;margin-top:3.5rem;padding-top:1.5rem;border-top:1px solid var(--border-color);font-size:.9rem;color:var(--light-text-color)}footer a{color:var(--primary-color);text-decoration:none;font-weight:700}footer a:hover{text-decoration:underline}@media (max-width: 768px){body{padding:0}.container{margin:0;border-radius:0;box-shadow:none;padding:1.5rem}.calculator-grid,.scenarios-grid{grid-template-columns:1fr}header h1{font-size:2rem}.result-section .result-value{font-size:3rem}}