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h3{font-size:1.4rem;color:#334155;margin-top:2rem;margin-bottom:1rem;font-weight:600}.content-block p{font-size:1.05rem;line-height:1.8;color:#475569;margin-bottom:1.25rem}.content-block p:last-child{margin-bottom:0}@media (max-width: 768px){.seo-content-section{margin:2rem auto;padding:0 .75rem}.content-block{padding:1.5rem;margin-bottom:1.5rem;border-radius:12px}.content-block h2{font-size:1.5rem;margin-bottom:1rem}.content-block h3{font-size:1.2rem;margin-top:1.5rem;margin-bottom:.75rem}.content-block p{font-size:.95rem;line-height:1.7}}@media (max-width: 576px){.seo-content-section{margin:1.5rem auto}.content-block{padding:1.25rem;margin-bottom:1rem}.content-block h2{font-size:1.3rem}.content-block h3{font-size:1.1rem}.content-block p{font-size:.9rem}}:root{--primary-color: #2563eb;--primary-hover: #1d4ed8;--secondary-color: #64748b;--accent-color: #10b981;--warning-color: #f59e0b;--danger-color: #ef4444;--success-color: #22c55e;--bg-primary: #ffffff;--bg-secondary: #f8fafc;--bg-tertiary: #f1f5f9;--text-primary: #1e293b;--text-secondary: #475569;--text-muted: #94a3b8;--border-color: #e2e8f0;--spacing-xs: .5rem;--spacing-sm: .75rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--spacing-2xl: 3rem;--radius-sm: .375rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: 1rem;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .1);--transition-fast: .15s ease;--transition-base: .2s ease;--transition-slow: .3s ease}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth;font-size:16px}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica 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var(--spacing-sm)}}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-xs);padding:.75rem 1.5rem;font-size:1rem;font-weight:500;border:none;border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-base);white-space:nowrap}.btn:disabled{opacity:.6;cursor:not-allowed}.btn-primary{background-color:var(--primary-color);color:#fff}.btn-primary:hover:not(:disabled){background-color:var(--primary-hover);transform:translateY(-2px);box-shadow:var(--shadow-md)}.btn-secondary{background-color:var(--secondary-color);color:#fff}.btn-secondary:hover:not(:disabled){background-color:#475569;transform:translateY(-2px);box-shadow:var(--shadow-md)}.btn-outline{background-color:transparent;color:var(--text-primary);border:2px solid var(--border-color)}.btn-outline:hover:not(:disabled){background-color:var(--bg-tertiary);border-color:var(--secondary-color)}.btn-large{padding:1rem 2rem;font-size:1.125rem}.btn-sm{padding:.5rem 1rem;font-size:.875rem}.loading{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--spacing-2xl);text-align:center}.spinner{width:48px;height:48px;border:4px solid var(--border-color);border-top-color:var(--primary-color);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.loading-subtext{font-size:.875rem;color:var(--text-muted);margin-top:var(--spacing-xs)}.error-box{padding:var(--spacing-lg);background-color:#fef2f2;border:1px solid #fecaca;border-radius:var(--radius-md);color:#dc2626;margin-bottom:var(--spacing-lg)}.highlight{color:gold;font-weight:700;text-shadow:0 2px 4px rgba(0,0,0,.2)}.positive{color:var(--success-color)}.negative{color:var(--danger-color)}.warning{color:var(--warning-color)}.required{color:var(--danger-color)}@media (max-width: 768px){h1{font-size:2rem}h2{font-size:1.75rem}h3{font-size:1.25rem}.container{padding:0 var(--spacing-md)}.btn{padding:.625rem 1.25rem;font-size:.875rem}}.seo-content-section{max-width:1200px;margin:0 auto;padding:3rem 2rem;background:#fff;border-radius:20px;box-shadow:0 10px 40px #00000014;margin-top:2rem;margin-bottom:2rem}.content-block{margin-bottom:4rem;line-height:1.9}.content-block:last-child{margin-bottom:0}.content-block h2{color:#2c3e50;font-size:2rem;font-weight:800;margin-bottom:1.5rem;letter-spacing:-.5px;position:relative;padding-bottom:1rem}.content-block h2:after{content:"";position:absolute;bottom:0;left:0;width:80px;height:4px;background:linear-gradient(90deg,#667eea,#764ba2);border-radius:2px}.content-block h3{color:#2c3e50;font-size:1.25rem;font-weight:600;margin:1.5rem 0 1rem}.content-block p{color:#5a6c7d;font-size:1.05rem;margin-bottom:1rem;line-height:1.8}.content-block ul,.content-block ol{color:#5a6c7d;font-size:1.05rem;line-height:1.8;padding-left:2rem;margin-bottom:1rem}.content-block li{margin-bottom:.75rem}.content-block strong{color:#2c3e50;font-weight:600}.formula-box{background:linear-gradient(135deg,#f8f9fc,#f0f3f9);border-left:4px solid #667eea;padding:1.5rem;margin:1.5rem 0;border-radius:8px;font-family:Courier New,monospace;font-size:1.1rem;text-align:center}.related-calculators{background:linear-gradient(135deg,#667eea,#764ba2);padding:3rem 2rem;border-radius:20px;margin-top:3rem}.related-calculators h2{color:#fff;font-size:1.75rem;font-weight:700;margin-bottom:1rem;text-align:center}.related-calculators>p{color:#ffffffe6;text-align:center;margin-bottom:2rem;font-size:1.05rem}.calculator-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1.5rem}.calc-card{background:#fff;padding:2rem;border-radius:12px;text-decoration:none;transition:all .3s;border:2px solid transparent}.calc-card:hover{transform:translateY(-8px);box-shadow:0 12px 28px #00000026;border-color:#fff}.calc-card h3{color:#667eea;font-size:1.25rem;font-weight:700;margin:0 0 .5rem}.calc-card p{color:#5a6c7d;font-size:.95rem;margin:0;line-height:1.5}@media (max-width: 768px){.seo-content-section{padding:2rem 1rem}.content-block h2{font-size:1.4rem}.content-block h3{font-size:1.1rem}.content-block p,.content-block ul,.content-block ol{font-size:.95rem}.calculator-grid{grid-template-columns:1fr}.related-calculators{padding:2rem 1.5rem}}