:root{--primary-blue:#0a66c2;--dark-blue:#053361;--accent-red:#d9381e;--bg-dark:#12181e;--bg-light:#f4f7f9;--text-dark:#1e293b;--text-muted:#64748b;--white:#fff;--footer-bg:#0a0a0a}*{box-sizing:border-box;margin:0;padding:0;font-family:'Segoe UI',-apple-system,BlinkMacSystemFont,Roboto,sans-serif}html{scroll-behavior:smooth}body{background-color:#fff;color:var(--text-dark);line-height:1.6}.container{max-width:1200px;margin:0 auto;padding:0 20px}.top-bar{background-color:var(--dark-blue);color:var(--white);padding:8px 0;font-size:.85rem}.top-bar-content{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap}.top-bar a{color:#a5d1ff;text-decoration:none;font-weight:600}.navbar{background-color:var(--white);box-shadow:0 2px 10px rgba(0,0,0,.1);position:sticky;top:0;z-index:1000}.nav-container{display:flex;justify-content:space-between;align-items:center;height:75px}.nav-logo{height:48px;width:auto}.nav-menu{display:flex;list-style:none;gap:20px}.nav-menu a{text-decoration:none;color:var(--text-dark);font-weight:700;font-size:.9rem;transition:color .3s}.nav-menu a:hover{color:var(--primary-blue)}.nav-toggle,.nav-toggle-label{display:none}.hero-section{background: linear-gradient(rgba(5, 51, 97, 0.85), rgba(5, 51, 97, 0.85)), url('images/Slides.jpg') center/cover no-repeat;color:var(--white);text-align:center;padding:90px 20px}.hero-quote-img{max-width:100%;height:auto;max-height:140px;margin-bottom:25px;border-radius:8px;box-shadow:0 4px 15px rgba(0,0,0,.3)}.hero-content h1{font-size:2.3rem;margin-bottom:15px;font-weight:800}.hero-content p{font-size:1.1rem;max-width:750px;margin:0 auto 30px;color:#e2e8f0}.btn{display:inline-block;padding:12px 24px;border-radius:4px;text-decoration:none;font-weight:700;cursor:pointer;border:none;transition:background .3s , transform .2s}.btn-primary{background-color:var(--accent-red);color:var(--white)}.btn-primary:hover{background-color:#b92b15}.btn-secondary{background-color:var(--primary-blue);color:var(--white);margin-left:10px}.btn-secondary:hover{background-color:#084e96}.btn-call{background-color:var(--dark-blue);color:var(--white);margin-right:10px;margin-bottom:10px}.btn-block{width:100%}.section{padding:70px 0}.bg-light{background-color:var(--bg-light)}.section-title{text-align:center;margin-bottom:40px}.section-title h2{font-size:2rem;color:var(--dark-blue);text-transform:uppercase}.title-underline{width:60px;height:4px;background-color:var(--accent-red);margin:10px auto 15px}.services-wrapper{display:grid;grid-template-columns:1fr 2fr;gap:30px;align-items:center}.services-image img{width:100%;max-width:280px;display:block;margin:0 auto}.lead-text{font-size:1.2rem;font-weight:700;margin-bottom:20px;color:var(--dark-blue)}.services-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:15px;list-style:none}.services-grid li{background:var(--bg-light);padding:15px;border-left:4px solid var(--primary-blue);font-weight:600;border-radius:0 4px 4px 0}.brand-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:20px;align-items:center}.brand-card{background:var(--white);padding:20px;border-radius:6px;box-shadow:0 2px 8px rgba(0,0,0,.06);display:flex;justify-content:center;align-items:center}.brand-card img{max-width:100%;max-height:60px;object-fit:contain}.about-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:20px}.about-card{background:var(--white);padding:30px;border:1px solid #e2e8f0;border-radius:6px}.about-card h3{color:var(--dark-blue);margin-bottom:15px}.btu-explanation{max-width:800px;margin:0 auto 30px;text-align:center}.disclaimer-box{background:#fffbeb;border:1px solid #fcd34d;padding:15px;margin-top:15px;font-size:.9rem;border-radius:4px}.calculator-card{max-width:700px;margin:0 auto;background:var(--white);padding:30px;border-radius:8px;box-shadow:0 4px 15px rgba(0,0,0,.08)}.form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:15px;margin-bottom:15px}.form-group{display:flex;flex-direction:column}.form-group label{font-weight:600;margin-bottom:5px;font-size:.9rem}.form-control{padding:10px;border:1px solid #cbd5e1;border-radius:4px;font-size:1rem}.results-display{display:none;margin-top:25px;padding:20px;background:#eff6ff;border:1px solid #bfdbfe;border-radius:6px}.result-item{display:flex;justify-content:space-between;margin-bottom:10px}.result-label{font-weight:700}.result-value{font-weight:800;color:var(--accent-red)}.note-text{font-size:.8rem;color:var(--text-muted);text-align:center;margin-top:10px}.contact-wrapper{display:grid;grid-template-columns:1fr 1fr;gap:30px}.info-block{margin-bottom:25px}.info-block h4{color:var(--dark-blue);margin-bottom:8px}.site-footer{background-color:var(--footer-bg);color:#9ca3af;padding:50px 0 30px;font-size:.85rem}.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:30px}.footer-col h4{color:var(--white);margin-bottom:15px}.footer-col a{color:var(--white);text-decoration:underline}@media (max-width:768px){.nav-toggle-label{display:block;cursor:pointer;padding:10px}.nav-toggle-label span,.nav-toggle-label span::before,.nav-toggle-label span::after{display:block;background:var(--dark-blue);height:3px;width:25px;position:relative}.nav-menu{display:none;flex-direction:column;width:100%;position:absolute;top:75px;left:0;background:var(--white);padding:20px;box-shadow:0 5px 10px rgba(0,0,0,.1)}.nav-toggle:checked ~ .nav-menu {display:flex}.services-wrapper,.contact-wrapper{grid-template-columns:1fr}.btn-secondary{margin-left:0;margin-top:10px}}