*{margin:0;padding:0;box-sizing:border-box}:root{--primary:#1d3557;--primary-dark:#102a43;--primary-light:#457b9d;--accent:#ff6b35;--accent-light:#ffb347;--accent-dark:#c34a36;--text-dark:#212121;--text-light:#757575;--bg-light:#fafafa;--bg-white:#ffffff;--border:#e0e0e0;--shadow-sm:0 2px 8px rgba(0,0,0,0.08);--shadow-md:0 4px 12px rgba(0,0,0,0.12);--shadow-lg:0 8px 24px rgba(0,0,0,0.15);--shadow-xl:0 12px 32px rgba(0,0,0,0.18)}body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI','Roboto','Oxygen','Ubuntu','Cantarell',sans-serif;line-height:1.6;color:var(--text-dark);background:var(--bg-light)}html{scroll-behavior:smooth}.container{max-width:1200px;margin:0 auto;padding:0 20px}.navbar{background:var(--bg-white);box-shadow:var(--shadow-sm);position:sticky;top:0;z-index:1000;padding:1rem 0}.navbar 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ul{list-style:none}.tech-card li{padding:0.5rem 0;padding-left:1.5rem;position:relative}.tech-card li::before{content:"✓";position:absolute;left:0;color:var(--accent-light);font-weight:bold}.advantages-wrapper{margin:3rem 0}.advantage-category{margin-bottom:4rem}.category-title{font-size:1.8rem;margin-bottom:2rem;color:var(--primary);text-align:center}.advantage-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:2rem}.advantage-item{background:white;padding:2rem;border-radius:12px;box-shadow:var(--shadow-sm);transition:all 0.3s;border-left:4px solid var(--accent)}.advantage-item:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}.advantage-number{font-size:2.5rem;font-weight:800;color:var(--accent);opacity:0.3;line-height:1;margin-bottom:0.5rem}.advantage-item h4{font-size:1.2rem;margin-bottom:0.5rem;color:var(--primary)}.advantage-item p{color:var(--text-light);line-height:1.6}.limitations-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:2rem;margin:3rem 0}.limitation-card{background:white;padding:2rem;border-radius:12px;box-shadow:var(--shadow-md)}.limitation-card h3{color:#ff9800;margin-bottom:1rem}.limitation-card ul{list-style:none}.limitation-card li{padding:0.5rem 0;padding-left:1.5rem;position:relative}.limitation-card li::before{content:"⚠";position:absolute;left:0}.types-section,.purpose-section,.brands-section{margin:3rem 0}.types-section h3,.purpose-section h3,.brands-section h3{font-size:1.8rem;margin-bottom:2rem;color:var(--primary);text-align:center}.types-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:2rem}.type-card{background:linear-gradient(135deg,var(--primary) 0%,var(--primary-light) 100%);color:white;padding:2rem;border-radius:12px;text-align:center;transition:transform 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h3{text-align:center;margin-bottom:2rem;font-size:1.8rem}.factors-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:2rem}.factor-item{background:rgba(255,255,255,0.1);padding:2rem;border-radius:12px;text-align:center}.factor-cost{font-size:1.5rem;font-weight:700;color:var(--accent-light);margin-bottom:0.5rem}.factor-name{opacity:0.9}.legal-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:2rem;margin:3rem 0}.legal-card{padding:2rem;border-radius:12px;color:white}.legal-green{background:var(--accent)}.legal-blue{background:var(--primary)}.legal-card h3{margin-bottom:1rem;font-size:1.5rem}.legal-card ul{list-style:none}.legal-card li{padding:0.5rem 0;padding-left:1.5rem;position:relative;line-height:1.5}.legal-card li::before{content:"•";position:absolute;left:0;top:0.5rem;line-height:1}.process-timeline{margin:3rem 0}.process-timeline h3{text-align:center;margin-bottom:2rem;font-size:1.8rem;color:var(--primary)}.timeline{display:flex;justify-content:space-between;position:relative;padding:2rem 0}.timeline::before{content:'';position:absolute;top:50%;left:0;right:0;height:2px;background:var(--border);z-index:0}.timeline-item{flex:1;text-align:center;position:relative;z-index:1}.timeline-dot{width:60px;height:60px;background:var(--accent);color:white;border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 1rem;font-size:1.5rem;font-weight:700;box-shadow:var(--shadow-md)}.timeline-content h4{color:var(--primary);margin-bottom:0.5rem}.timeline-content p{color:var(--text-light);font-size:0.9rem}.business-hero{margin:2rem 0 3rem}.business-quote{background:rgba(255,255,255,0.1);padding:2rem;border-left:4px solid white;border-radius:8px;font-size:1.3rem;font-style:italic}.business-quote cite{display:block;margin-top:1rem;font-size:1rem;font-style:normal;opacity:0.8}.business-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:2rem;margin:3rem 0}.stat-card{background:rgba(255,255,255,0.15);padding:2rem;border-radius:12px;text-align:center}.stat-value{font-size:3rem;font-weight:800;margin-bottom:0.5rem}.stat-label{font-size:1.1rem;opacity:0.9}.business-economics{margin:3rem 0}.business-economics h3{text-align:center;margin-bottom:2rem;font-size:1.8rem}.economics-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:2rem}.economics-item{background:rgba(255,255,255,0.1);padding:2rem;border-radius:12px;text-align:center}.economics-label{opacity:0.8;margin-bottom:0.5rem}.economics-value{font-size:2rem;font-weight:700}.support-box{background:rgba(255,255,255,0.1);padding:2rem;border-radius:12px;margin-top:3rem}.support-box h3{text-align:center;margin-bottom:2rem}.support-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:2rem}.support-item{text-align:center}.support-item strong{display:block;margin-bottom:0.5rem;font-size:1.1rem}.installation-steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:2rem;margin:3rem 0}.step-card{background:white;padding:2rem;border-radius:12px;box-shadow:var(--shadow-sm);transition:all 0.3s}.step-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}.step-number{display:inline-block;width:50px;height:50px;background:linear-gradient(135deg,var(--primary) 0%,var(--accent) 100%);color:white;border-radius:50%;text-align:center;line-height:50px;font-weight:700;font-size:1.2rem;margin-bottom:1rem}.step-card h3{color:var(--primary);margin-bottom:0.5rem;font-size:1.2rem}.step-card p{color:var(--text-light)}.foundation-types{margin-top:4rem}.foundation-types h3{text-align:center;margin-bottom:2rem;font-size:1.8rem;color:var(--primary)}.foundation-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:2rem}.foundation-card{background:var(--bg-light);padding:2rem;border-radius:12px;text-align:center;transition:all 0.3s;border-top:4px solid var(--accent)}.foundation-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md)}.foundation-card h4{color:var(--primary);margin-bottom:1rem}.foundation-desc{color:var(--text-light);margin-bottom:1rem}.foundation-price{font-size:1.3rem;font-weight:700;color:var(--accent)}.maintenance-schedule{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:2rem;margin:3rem 0}.maintenance-card{background:rgba(255,255,255,0.05);padding:2rem;border-radius:12px;border:1px solid rgba(255,255,255,0.1)}.maintenance-period{font-size:1.2rem;font-weight:700;color:var(--accent-light);margin-bottom:1rem}.maintenance-card ul{list-style:none}.maintenance-card li{padding:0.5rem 0;padding-left:1.5rem;position:relative}.maintenance-card li::before{content:"✓";position:absolute;left:0;color:var(--accent-light)}.warranty-info{margin-top:4rem}.warranty-info h3{text-align:center;margin-bottom:2rem}.warranty-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:2rem}.warranty-item{background:rgba(255,255,255,0.05);padding:2rem;border-radius:12px;text-align:center}.warranty-years{font-size:2rem;font-weight:700;color:var(--accent-light);margin-bottom:0.5rem}.warranty-desc{opacity:0.9}.conclusion-intro{background:white;padding:2rem;border-radius:12px;margin-bottom:3rem;box-shadow:var(--shadow-sm)}.conclusion-intro p{font-size:1.1rem;line-height:1.8}.key-points h3{text-align:center;margin-bottom:2rem;font-size:1.8rem;color:var(--primary)}.points-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:2rem;margin-bottom:3rem}.point-card{background:white;padding:2rem;border-radius:12px;box-shadow:var(--shadow-sm)}.point-card h4{color:var(--primary);margin-bottom:0.5rem}.point-card p{color:var(--text-light)}.recommendations{background:white;padding:2rem;border-radius:12px;margin-bottom:3rem;box-shadow:var(--shadow-sm)}.recommendations h3{color:var(--primary);margin-bottom:1.5rem}.recommendations-list{padding-left:2rem}.recommendations-list li{padding:0.5rem 0;line-height:1.6}.future-outlook{background:linear-gradient(135deg,var(--primary) 0%,var(--accent) 100%);color:white;padding:3rem;border-radius:12px;text-align:center}.future-outlook h3{margin-bottom:1.5rem;font-size:2rem}.future-outlook p{font-size:1.1rem;line-height:1.8;margin-bottom:1.5rem;max-width:800px;margin-left:auto;margin-right:auto}.final-thought{font-size:1.3rem;font-weight:600;font-style:italic}.articles-section{padding-top:3rem}.articles-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(350px,1fr));gap:2rem;margin-bottom:3rem}.article-card{background:var(--bg-white);border-radius:12px;overflow:hidden;box-shadow:var(--shadow-sm);transition:all 0.3s ease}.article-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg)}.article-card.featured{grid-column:span 2}.article-link{text-decoration:none;color:inherit;display:block}.article-card.coming-soon{opacity:0.7}.article-card.coming-soon:hover{transform:translateY(-4px)}.article-image{position:relative;width:100%;height:250px;overflow:hidden;background:var(--bg-light)}.article-card.featured .article-image{height:400px}.article-image img{width:100%;height:100%;object-fit:cover;transition:transform 0.3s ease}.article-card:hover .article-image img{transform:scale(1.05)}.article-image.placeholder{display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#e0e0e0 0%,#f5f5f5 100%)}.placeholder-text{font-size:1.5rem;font-weight:600;color:var(--text-light)}.article-badge{position:absolute;top:1rem;right:1rem;background:var(--accent);color:white;padding:0.5rem 1rem;border-radius:20px;font-size:0.85rem;font-weight:600}.article-content{padding:1.5rem}.article-meta{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem;font-size:0.85rem}.article-category{background:var(--primary);color:white;padding:0.25rem 0.75rem;border-radius:12px;font-weight:500}.article-date{color:var(--text-light)}.article-title{font-size:1.4rem;color:var(--primary-dark);margin-bottom:0.75rem;line-height:1.3}.article-excerpt{color:var(--text-light);margin-bottom:1rem;line-height:1.6}.article-tags{display:flex;flex-wrap:wrap;gap:0.5rem}.tag{background:var(--bg-light);color:var(--text-dark);padding:0.25rem 0.75rem;border-radius:12px;font-size:0.85rem;border:1px solid var(--border)}.about-section{background:var(--bg-white);padding:4rem 0}.about-content{max-width:800px;margin:0 auto;text-align:center}.about-content h2{color:var(--primary);font-size:2rem;margin-bottom:1.5rem}.about-content p{font-size:1.1rem;color:var(--text-light);line-height:1.8;margin-bottom:1rem}.footer{background:var(--text-dark);color:rgba(255,255,255,0.8);padding:2rem 0;text-align:center}.footer p{margin:0}.scroll-top-btn{position:fixed;bottom:30px;right:30px;width:50px;height:50px;background:var(--accent);color:white;border:none;border-radius:50%;font-size:1.5rem;cursor:pointer;opacity:0;visibility:hidden;transition:all 0.3s;box-shadow:var(--shadow-md);z-index:1000}.scroll-top-btn.visible{opacity:1;visibility:visible}.scroll-top-btn:hover{background:var(--primary);transform:translateY(-5px);box-shadow:var(--shadow-lg)}@media (max-width:768px){.nav-toggle{display:block}.nav-menu{display:none;position:absolute;top:100%;left:0;right:0;background:var(--bg-white);flex-direction:column;padding:1rem;box-shadow:var(--shadow-md);gap:0}.nav-menu.active{display:flex}.nav-menu li{padding:0.75rem 0;border-bottom:1px solid var(--border)}.nav-menu li:last-child{border-bottom:none}.hero,.hero-section{padding:2rem 0}.hero h1{font-size:2.2rem}.hero-text h2{font-size:1.8rem}.hero-subtitle,.hero-text p{font-size:1rem}.section{padding:3rem 0}.section-title{font-size:2rem}.articles-grid{grid-template-columns:1fr}.article-card.featured{grid-column:span 1}.article-card.featured .article-image{height:250px}.timeline{flex-direction:column;gap:2rem}.timeline::before{display:none}.footer-content{grid-template-columns:1fr;text-align:center}}@media (max-width:480px){.hero h1{font-size:1.8rem}.hero-text h2{font-size:1.5rem}.articles-section,.section{padding:2rem 0}.scroll-top-btn{width:40px;height:40px;bottom:20px;right:20px}}@keyframes fadeInUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.article-card{animation:fadeInUp 0.2s ease forwards}.article-card:nth-child(1){animation-delay:0s}.article-card:nth-child(2){animation-delay:0.05s}.article-card:nth-child(3){animation-delay:0.1s}.article-card:nth-child(4){animation-delay:0.15s}.article-card:nth-child(5){animation-delay:0.2s}blockquote{margin:2rem 0;padding:1.5rem;background:rgba(255,255,255,0.1);border-left:4px solid var(--accent-light);font-style:italic;color:inherit;border-radius:4px}blockquote cite{display:block;margin-top:0.5rem;font-size:0.9rem;font-style:normal;opacity:0.9}ul,ol{margin:1rem 0 1.5rem 2rem}li{margin-bottom:0.7rem;line-height:1.6}p{margin-bottom:1rem}h2{margin-bottom:1.5rem}h3{margin:1.5rem 0 1rem}