* { margin: 0; padding: 0; box-sizing: border-box; }
        body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.6; color: #333; }
        .container { max-width: 1200px; margin: 0 auto; padding: 20px 20px; }

        /* Header */
        header { background: rgba(255,255,255,0.95); backdrop-filter: blur(10px); position: fixed; width: 100%; top: 0; z-index: 1000; box-shadow: 0 2px 20px rgba(0,0,0,0.1); }
        nav { display: flex; justify-content: space-between; align-items: center; padding: 1rem 0; }
        .logo { font-size: 1.8rem; font-weight: bold; color: #2c5aa0; }
        .nav-menu { display: flex; list-style: none; gap: 2rem; }
        .nav-menu a { text-decoration: none; color: #333; font-weight: 500; transition: color 0.3s; }
        .nav-menu a:hover { color: #2c5aa0; }
        .cta-buttons { display: flex; gap: 1rem; }
        .btn { padding: 12px 24px; border: none; border-radius: 50px; font-weight: 600; cursor: pointer; transition: all 0.3s; text-decoration: none; display: inline-block; }
        .btn-primary { background: linear-gradient(45deg, #2c5aa0, #1e3d72); color: white; }
        .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 10px 25px rgba(44,90,160,0.4); }
        .btn-secondary { background: transparent; color: #2c5aa0; border: 2px solid #2c5aa0; }
        .btn-secondary:hover { background: #2c5aa0; color: white; }

        /* Hero */
        .hero { background: linear-gradient(rgba(0,0,0,0.5), rgba(0,0,0,0.5)), url('../images/hero.webp') center/cover; height: 100vh; display: flex; align-items: center; text-align: center; color: white; }
        .hero h1 { font-size: 3.5rem; margin-bottom: 1.5rem; animation: fadeInUp 1s ease; }
        .hero p { font-size: 1.3rem; margin-bottom: 2.5rem; max-width: 900px; margin-left: auto; margin-right: auto; animation: fadeInUp 1s ease 0.2s both; }
        .hero-buttons { display: flex; gap: 1.5rem; justify-content: center; flex-wrap: wrap; animation: fadeInUp 1s ease 0.4s both; }

        /* Sections */
        section { padding: 100px 0; }
        .about, .services, .why-us, .warranty, .testimonials, .contact { background: #f8f9fa; }
        h2 { font-size: 2.8rem; text-align: center; margin-bottom: 1rem; color: #2c5aa0; }
        h3 { font-size: 2.2rem; text-align: center; margin-bottom: 0.5rem; color: #333; }
        .subheading { text-align: center; font-size: 1.2rem; color: #666; margin-bottom: 4rem; max-width: 800px; margin-left: auto; margin-right: auto; }

        /* About */
        .about-content { max-width: 800px; margin: 0 auto; text-align: center; font-size: 1.1rem; line-height: 1.8; }

        /* Services */
        .services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2rem; }
        .service-card { background: white; padding: 2.5rem 2rem; border-radius: 20px; text-align: center; box-shadow: 0 15px 40px rgba(0,0,0,0.1); transition: all 0.4s; cursor: pointer; }
        .service-card:hover { transform: translateY(-15px); box-shadow: 0 25px 60px rgba(0,0,0,0.15); }
        .service-icon { font-size: 3rem; color: #2c5aa0; margin-bottom: 1.5rem; }
        .service-card h4 { margin-bottom: 1rem; color: #333; }

        /* Why Choose Us */
        .why-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2rem; }
        .why-item { text-align: center; }
        .why-icon { font-size: 4rem; color: #2c5aa0; margin-bottom: 1.5rem; }
        .why-item h4 { margin-bottom: 1rem; color: #333; }

        /* Form */
        .quote-form { max-width: 600px; margin: 0 auto; background: white; padding: 3rem; border-radius: 20px; box-shadow: 0 20px 60px rgba(0,0,0,0.1); }
        .form-group { margin-bottom: 1.5rem; }
        label { display: block; margin-bottom: 0.5rem; font-weight: 600; color: #333; }
        input, select, textarea { width: 100%; padding: 15px; border: 2px solid #e1e5e9; border-radius: 10px; font-size: 1rem; transition: border-color 0.3s; }
        input:focus, select:focus, textarea:focus { outline: none; border-color: #2c5aa0; }
        textarea { resize: vertical; min-height: 120px; }
        .checkbox-group { display: flex; align-items: center; gap: 0.5rem; }
        .form-message { display: none; padding: 1rem; border-radius: 10px; margin-top: 1rem; text-align: center; }

        /* Testimonials */
        .testimonials-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(350px, 1fr)); gap: 2rem; }
        .testimonial { background: white; padding: 2.5rem; border-radius: 20px; box-shadow: 0 15px 40px rgba(0,0,0,0.1); text-align: center; position: relative; animation: slideInUp 0.8s ease forwards; opacity: 0; }
        .testimonial:nth-child(1) { animation-delay: 0.1s; }
        .testimonial:nth-child(2) { animation-delay: 0.2s; }
        .testimonial:nth-child(3) { animation-delay: 0.3s; }
        .testimonial p { font-style: italic; margin-bottom: 1.5rem; font-size: 1.1rem; }
        .testimonial-author { font-weight: bold; color: #2c5aa0; }

        /* Contact */
        .contact-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 3rem; }
        .contact-item { text-align: center; padding: 2rem; }
        .contact-icon { font-size: 3rem; color: #2c5aa0; margin-bottom: 1rem; }
        #map { height: 300px; border-radius: 15px; margin-top: 2rem; background: #ddd; }

        /* Footer */
        footer { background: #1a1a1a; color: white; padding: 4rem 0 2rem; }
        .footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 2rem; margin-bottom: 2rem; }
        .footer-section h4 { margin-bottom: 1rem; color: #2c5aa0; }
        .footer-section a { color: #ccc; text-decoration: none; display: block; margin-bottom: 0.5rem; transition: color 0.3s; }
        .footer-section a:hover { color: #2c5aa0; }
        .social-icons { display: flex; gap: 1rem; }
        .social-icons a { font-size: 1.5rem; color: #ccc; transition: color 0.3s; }
        .social-icons a:hover { color: #2c5aa0; }
        .footer-bottom { text-align: center; padding-top: 2rem; border-top: 1px solid #333; color: #999; }

        /* Animations */
        @keyframes fadeInUp { from { opacity: 0; transform: translateY(50px); } to { opacity: 1; transform: translateY(0); } }
        @keyframes slideInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }

        /* Responsive */
        @media (max-width: 768px) {
            .nav-menu { display: none; }
            .hero h1 { font-size: 2.5rem; }
            .services-grid, .why-grid, .testimonials-grid { grid-template-columns: 1fr; }
            .hero-buttons { flex-direction: column; align-items: center; }
        }

        /* Popup */
        .popup-overlay { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.8); z-index: 2000; }
        .popup { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); background: white; padding: 3rem; border-radius: 20px; max-width: 500px; width: 90%; max-height: 80vh; overflow-y: auto; }
        .popup h3 { margin-bottom: 1.5rem; color: #2c5aa0; }
        .popup-close { position: absolute; top: 1rem; right: 1.5rem; font-size: 2rem; cursor: pointer; color: #999; }

        /* Sticky CTA */
        .sticky-cta { position: fixed; bottom: 20px; right: 20px; z-index: 1001; }
        @media (max-width: 768px) { .sticky-cta { bottom: 80px; } }