:root{--primary:#007abc;--primary-dark:#005a8c;--primary-light:#e6f3fa;--dark:#1a1a1a;--text:#333;--text-light:#626262;--bg:#fff;--bg-alt:#f4f4f4;--border:#e0e0e0;--accent:#ff6b35;--success:#28a745;--max-width:1100px;--header-height:70px}*,:after,:before{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:Roboto,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:var(--text);background:var(--bg);line-height:1.7;font-size:16px}a{color:var(--primary);text-decoration:none;transition:color .2s}a:hover{color:var(--primary-dark)}img{max-width:100%;height:auto}h1,h2,h3,h4,h5,h6{color:var(--dark);line-height:1.3;margin-bottom:.5em}h1{font-size:2.2rem;font-weight:700}h2{font-size:1.7rem;margin-top:2rem}h2,h3{font-weight:600}h3{font-size:1.3rem;margin-top:1.5rem}p{margin-bottom:1em}.container{max-width:var(--max-width);margin:0 auto;padding:0 20px}.page-content{min-height:calc(100vh - var(--header-height) - 300px);padding:40px 0}.header{background:var(--dark);height:var(--header-height);position:-webkit-sticky;position:sticky;top:0;z-index:1000;box-shadow:0 2px 10px rgba(0,0,0,.1)}.header .container{justify-content:space-between;height:100%}.header .container,.logo{display:flex;align-items:center}.logo{gap:10px;font-weight:700;font-size:1.3rem;text-decoration:none}.logo,.logo:hover{color:#fff}.logo svg{flex-shrink:0}.logo-text{display:flex;flex-direction:column;line-height:1.1}.logo-text .brand{font-size:1.2rem;font-weight:700;letter-spacing:1px}.logo-text .tagline{font-size:.65rem;color:hsla(0,0%,100%,.7);font-weight:400;letter-spacing:.5px}.nav-toggle{display:none;background:none;border:none;color:#fff;font-size:1.5rem;cursor:pointer;padding:5px}.nav-menu{display:flex;list-style:none;gap:5px;align-items:center}.nav-menu a{color:hsla(0,0%,100%,.85);padding:8px 14px;border-radius:4px;font-size:.9rem;font-weight:500;transition:all .2s}.nav-menu a.active,.nav-menu a:hover{color:#fff;background:hsla(0,0%,100%,.1)}.hero{background:linear-gradient(135deg,var(--dark) 0,#003654 100%);color:#fff;padding:80px 0;text-align:center}.hero h1{color:#fff;font-size:2.8rem;margin-bottom:.3em}.hero .subtitle{font-size:1.2rem;color:hsla(0,0%,100%,.85);max-width:700px;margin:0 auto 30px}.hero .cta-btn{display:inline-block;background:var(--primary);color:#fff;padding:14px 40px;border-radius:6px;font-size:1.1rem;font-weight:600;transition:all .3s;text-decoration:none}.hero .cta-btn:hover{background:var(--primary-dark);color:#fff;transform:translateY(-2px);box-shadow:0 4px 15px rgba(0,122,188,.4)}.features{padding:60px 0;background:var(--bg-alt)}.features-grid{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:30px;gap:30px;margin-top:30px}.feature-card{background:#fff;padding:30px;border-radius:8px;text-align:center;box-shadow:0 2px 8px rgba(0,0,0,.06);transition:transform .2s}.feature-card:hover{transform:translateY(-3px)}.feature-icon{font-size:2.5rem;margin-bottom:15px;display:block}.feature-card h3{margin-top:0;color:var(--dark)}.section-title{text-align:center;font-size:2rem;margin-bottom:10px}.section-subtitle{text-align:center;color:var(--text-light);max-width:600px;margin:0 auto 30px}.products-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));grid-gap:25px;gap:25px;margin-top:30px}.product-card{background:#fff;border-radius:8px;overflow:hidden;box-shadow:0 2px 8px rgba(0,0,0,.06);transition:transform .2s}.product-card:hover{transform:translateY(-3px)}.product-image{background:var(--bg-alt);height:200px;display:flex;align-items:center;justify-content:center}.product-image .color-circle{width:120px;height:120px;border-radius:50%;box-shadow:0 4px 15px rgba(0,0,0,.15)}.product-info{padding:20px}.product-info h3{margin-top:0;font-size:1.1rem}.product-price{color:var(--primary);font-size:1.3rem;font-weight:700}.product-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}.product-tag{background:var(--primary-light);color:var(--primary-dark);padding:3px 10px;border-radius:20px;font-size:.75rem}.contact-grid{display:grid;grid-template-columns:1fr 1fr;grid-gap:40px;gap:40px;margin-top:30px}.contact-info-card{background:var(--bg-alt);padding:30px;border-radius:8px}.contact-info-card h3{margin-top:0}.contact-detail{display:flex;gap:10px;margin-bottom:15px;align-items:flex-start}.contact-detail .label{font-weight:600;min-width:70px;color:var(--dark)}.contact-form{background:#fff;padding:30px;border-radius:8px;border:1px solid var(--border)}.form-group{margin-bottom:20px}.form-group label{display:block;margin-bottom:6px;font-weight:500;color:var(--dark)}.form-group input,.form-group select,.form-group textarea{width:100%;padding:10px 14px;border:1px solid var(--border);border-radius:6px;font-size:1rem;font-family:inherit;transition:border-color .2s}.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:var(--primary)}.form-row{display:grid;grid-template-columns:1fr 1fr;grid-gap:15px;gap:15px}.btn{display:inline-block;background:var(--primary);color:#fff;padding:12px 30px;border:none;border-radius:6px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .2s}.btn:hover{background:var(--primary-dark);color:#fff}.article-header{background:linear-gradient(135deg,var(--dark) 0,#003654 100%);color:#fff;padding:60px 0 40px}.article-header h1{color:#fff;font-size:2.2rem;max-width:800px}.article-header .breadcrumb{margin-bottom:15px;font-size:.9rem}.article-header .breadcrumb a{color:hsla(0,0%,100%,.7)}.article-header .breadcrumb a:hover{color:#fff}.article-header .breadcrumb span{color:hsla(0,0%,100%,.5);margin:0 8px}.article-layout{display:grid;grid-template-columns:250px 1fr;grid-gap:40px;gap:40px;padding:40px 0}.toc{position:-webkit-sticky;position:sticky;top:calc(var(--header-height) + 20px);align-self:start;background:var(--bg-alt);border-radius:8px;padding:20px;max-height:calc(100vh - var(--header-height) - 40px);overflow-y:auto}.toc h4{font-size:.85rem;text-transform:uppercase;letter-spacing:1px;color:var(--text-light);margin-bottom:12px}.toc ul{list-style:none}.toc li{margin-bottom:6px}.toc a{color:var(--text-light);font-size:.85rem;display:block;border-left:2px solid transparent;padding:4px 0 4px 10px;transition:all .2s}.toc a.active,.toc a:hover{color:var(--primary);border-left-color:var(--primary)}.toc .toc-h2{padding-left:10px}.toc .toc-h3{padding-left:24px;font-size:.8rem}.article-content{max-width:100%;overflow-x:auto}.article-content h2{padding-top:10px;border-bottom:2px solid var(--primary-light);padding-bottom:8px}.article-content h3{color:var(--primary-dark)}.article-content table{width:100%;border-collapse:collapse;margin:20px 0;font-size:.9rem;overflow-x:auto;display:block}.article-content table thead{display:table-header-group}.article-content table tbody{display:table-row-group}.article-content table tr{display:table-row}.article-content table td,.article-content table th{display:table-cell}.article-content table{display:table;min-width:600px}.table-wrapper{overflow-x:auto;margin:20px 0;-webkit-overflow-scrolling:touch}.article-content th{background:var(--dark);color:#fff;padding:12px 15px;text-align:left;font-weight:600;font-size:.85rem}.article-content td{padding:10px 15px;border-bottom:1px solid var(--border)}.article-content tr:nth-child(2n){background:var(--bg-alt)}.article-content ol,.article-content ul{margin-bottom:1em;padding-left:1.5em}.article-content li{margin-bottom:.3em}.article-content strong{color:var(--dark)}.faq-section{padding:50px 0;background:var(--bg-alt)}.faq-list{max-width:800px;margin:30px auto 0}.faq-item{background:#fff;margin-bottom:10px;border-radius:8px;overflow:hidden;box-shadow:0 1px 4px rgba(0,0,0,.05)}.faq-question{width:100%;background:none;border:none;padding:18px 24px;text-align:left;font-size:1rem;font-weight:600;color:var(--dark);cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-family:inherit;line-height:1.4}.faq-question:hover{color:var(--primary)}.faq-arrow{transition:transform .3s;flex-shrink:0;margin-left:15px;font-size:.8rem}.faq-item.open .faq-arrow{transform:rotate(180deg)}.faq-answer{max-height:0;overflow:hidden;transition:max-height .3s ease}.faq-item.open .faq-answer{max-height:2000px}.faq-answer-inner{padding:0 24px 20px;color:var(--text-light);line-height:1.7}.faq-answer-inner p{margin-bottom:12px}.footer{background:var(--dark);color:hsla(0,0%,100%,.7);padding:50px 0 30px}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;grid-gap:40px;gap:40px;margin-bottom:40px}.footer-about{max-width:300px}.footer-about p{font-size:.9rem;line-height:1.6}.footer h4{color:#fff;font-size:.95rem;margin-bottom:15px;text-transform:uppercase;letter-spacing:1px}.footer-links{list-style:none}.footer-links li{margin-bottom:8px}.footer-links a{color:hsla(0,0%,100%,.6);font-size:.9rem;transition:color .2s}.footer-links a:hover{color:#fff}.footer-bottom{border-top:1px solid hsla(0,0%,100%,.1);padding-top:20px;text-align:center;font-size:.85rem}.page-header{background:linear-gradient(135deg,var(--dark) 0,#003654 100%);color:#fff;padding:50px 0;text-align:center}.page-header h1{color:#fff;margin-bottom:10px}.page-header p{color:hsla(0,0%,100%,.8);max-width:600px;margin:0 auto}.not-found{text-align:center;padding:80px 0}.not-found h1{font-size:6rem;color:var(--primary);margin-bottom:0}.not-found h2{margin-top:0}@media (max-width:968px){.features-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1fr 1fr}.article-layout{grid-template-columns:1fr}.toc{position:relative;top:0;max-height:none}.contact-grid{grid-template-columns:1fr}}@media (max-width:768px){h1{font-size:1.8rem}h2{font-size:1.4rem}.hero{padding:50px 0}.hero h1{font-size:2rem}.hero .subtitle{font-size:1rem}.nav-toggle{display:block}.nav-menu{display:none;position:absolute;top:var(--header-height);left:0;right:0;background:var(--dark);flex-direction:column;padding:15px;border-top:1px solid hsla(0,0%,100%,.1);box-shadow:0 4px 10px rgba(0,0,0,.2)}.nav-menu.open{display:flex}.nav-menu a{padding:12px 14px;width:100%}.features-grid,.footer-grid,.products-grid{grid-template-columns:1fr}.footer-grid{gap:25px}.form-row{grid-template-columns:1fr}.article-header h1{font-size:1.6rem}.page-content{padding:25px 0}}@media (max-width:480px){.hero h1{font-size:1.6rem}.container{padding:0 15px}}