/* Minified and optimized CSS for production */
:root{--primary-color:#2c3e50;--secondary-color:#34495e;--accent-color:#e74c3c;--light-color:#ecf0f1;--dark-color:#2c3e50;--success-color:#27ae60;--warning-color:#f39c12;--text-color:#333;--border-radius:4px;--box-shadow:0 2px 10px rgba(0,0,0,0.1)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:'Segoe UI','Segoe UI Web',Verdana,Geneva,sans-serif;line-height:1.6;color:var(--text-color);background-color:#f5f5f5}.container{max-width:1200px;margin:0 auto;padding:0 20px}header{background-color:var(--primary-color);color:white;padding:20px 0;position:relative}.header-content{display:flex;justify-content:space-between;align-items:center}.logo{font-size:28px;font-weight:600;letter-spacing:1px}.logo span{color:var(--accent-color)}nav ul{display:flex;list-style:none}nav ul li{margin-left:20px}nav ul li a{color:white;text-decoration:none;font-weight:500;transition:color 0.3s}nav ul li a:hover{color:var(--accent-color)}.hero{background-image:linear-gradient(rgba(0,0,0,0.7),rgba(0,0,0,0.7)),url('https://images.unsplash.com/photo-1560448204-e02f11c3d0e2?ixlib=rb-1.2.1&auto=format&fit=crop&w=1350&q=80');background-size:cover;background-position:center;color:white;padding:100px 0;text-align:center}.hero h1{font-size:48px;margin-bottom:20px;font-weight:600}.hero p{font-size:20px;max-width:800px;margin:0 auto 30px}.btn{display:inline-block;background-color:var(--accent-color);color:white;padding:12px 30px;border-radius:var(--border-radius);text-decoration:none;font-weight:500;transition:background-color 0.3s;border:none;cursor:pointer;font-size:16px}.btn:hover{background-color:#c0392b}.btn-secondary{background-color:transparent;border:2px solid white}.btn-secondary:hover{background-color:rgba(255,255,255,0.1)}.section{padding:80px 0}.section-title{text-align:center;margin-bottom:50px}.section-title h2{font-size:36px;color:var(--primary-color);margin-bottom:15px}.section-title p{font-size:18px;color:#666;max-width:700px;margin:0 auto}.calculator{background-color:white;border-radius:8px;box-shadow:var(--box-shadow);overflow:hidden}.calculator-header{background-color:var(--primary-color);color:white;padding:20px;text-align:center}.calculator-header h3{font-size:24px;margin-bottom:10px}.calculator-header p{font-size:16px;opacity:0.8}.calculator-body{padding:30px;display:flex;flex-wrap:wrap;gap:30px}.calculator-form{flex:1;min-width:300px}.calculator-results{flex:1;min-width:300px;background-color:#f9f9f9;padding:20px;border-radius:var(--border-radius)}.form-group{margin-bottom:20px}label{display:block;margin-bottom:8px;font-weight:500}input[type="text"],input[type="number"],select{width:100%;padding:10px 15px;border:1px solid #ddd;border-radius:var(--border-radius);font-size:16px;transition:border-color 0.3s}input[type="text"]:focus,input[type="number"]:focus,select:focus{border-color:var(--accent-color);outline:none}.checkbox-group{margin-top:10px}.checkbox-item{display:flex;align-items:center;margin-bottom:10px}.checkbox-item input[type="checkbox"]{margin-right:10px}.slider-container{margin-top:10px}.slider{width:100%;-webkit-appearance:none;height:8px;border-radius:5px;background:#ddd;outline:none}.slider::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:20px;height:20px;border-radius:50%;background:var(--accent-color);cursor:pointer}.slider-value{display:inline-block;margin-left:10px;font-weight:500}.result-title{font-size:20px;margin-bottom:20px;color:var(--primary-color);font-weight:600}.result-item{display:flex;justify-content:space-between;padding:12px 0;border-bottom:1px solid #eee}.result-label{font-weight:500}.result-value{font-weight:600;color:var(--primary-color)}.total-result{margin-top:20px;padding:15px;background-color:var(--primary-color);color:white;border-radius:var(--border-radius)}.calculator-actions{margin-top:30px;text-align:center}.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:30px;margin-top:50px}.feature-card{background-color:white;border-radius:var(--border-radius);box-shadow:var(--box-shadow);padding:30px;text-align:center;transition:transform 0.3s}.feature-card:hover{transform:translateY(-5px)}.feature-icon{font-size:48px;color:var(--accent-color);margin-bottom:20px}.feature-title{font-size:20px;margin-bottom:15px;color:var(--primary-color)}.testimonials{background-color:var(--light-color)}.testimonial-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:30px}.testimonial-card{background-color:white;border-radius:var(--border-radius);box-shadow:var(--box-shadow);padding:30px;position:relative}.testimonial-text{font-style:italic;margin-bottom:20px}.testimonial-author{display:flex;align-items:center}.testimonial-author img{width:50px;height:50px;border-radius:50%;margin-right:15px}.author-info h4{font-size:18px;margin-bottom:5px}.author-info p{color:#666;font-size:14px}.cta{background-color:var(--primary-color);color:white;text-align:center}.cta-content{max-width:700px;margin:0 auto}.cta h2{font-size:36px;margin-bottom:20px}.cta p{font-size:18px;margin-bottom:30px;opacity:0.9}footer{background-color:var(--dark-color);color:white;padding:50px 0 20px}.footer-content{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:30px;margin-bottom:30px}.footer-column h3{font-size:18px;margin-bottom:20px;position:relative;padding-bottom:10px}.footer-column h3::after{content:'';position:absolute;left:0;bottom:0;width:50px;height:2px;background-color:var(--accent-color)}.footer-column ul{list-style:none}.footer-column ul li{margin-bottom:10px}.footer-column ul li a{color:#bbb;text-decoration:none;transition:color 0.3s}.footer-column ul li a:hover{color:white}.footer-bottom{text-align:center;padding-top:20px;border-top:1px solid rgba(255,255,255,0.1)}.social-links{display:flex;justify-content:center;margin-bottom:20px}.social-links a{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;background-color:rgba(255,255,255,0.1);border-radius:50%;margin:0 10px;color:white;text-decoration:none;transition:background-color 0.3s}.social-links a:hover{background-color:var(--accent-color)}.copyright{color:#bbb;font-size:14px}.toggle-container{display:flex;gap:15px;margin-top:10px}.toggle-label{display:flex;align-items:center;cursor:pointer}.toggle-label input{margin-right:8px}@media (max-width:768px){.header-content{flex-direction:column;text-align:center}nav ul{margin-top:20px;justify-content:center}nav ul li{margin:0 10px}.hero h1{font-size:36px}.hero p{font-size:18px}.section{padding:60px 0}.section-title h2{font-size:30px}.calculator-body{flex-direction:column}}