:root{--color-primary: #003366;--color-secondary: #00AEEF;--color-accent: #FF6600;--color-text-main: #1A1A1A;--color-text-light: #666666;--color-bg-light: #F4F7F9;--color-white: #FFFFFF;--color-border: #E0E0E0;--font-family-sans: "Inter", system-ui, -apple-system, sans-serif;--font-size-base: 16px;--font-size-lg: 1.25rem;--font-size-xl: 1.5rem;--font-size-2xl: 2rem;--font-size-3xl: 3rem;--spacing-1: .25rem;--spacing-2: .5rem;--spacing-4: 1rem;--spacing-8: 2rem;--spacing-12: 3rem;--spacing-16: 4rem;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1);--max-width: 1200px;--header-height: 80px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family-sans);color:var(--color-text-main);background-color:var(--color-white);line-height:1.6;-webkit-font-smoothing:antialiased}a{text-decoration:none;color:inherit;transition:color .2s}ul{list-style:none}img{max-width:100%;display:block}.container{max-width:var(--max-width);margin:0 auto;padding:0 var(--spacing-4)}.btn{display:inline-block;padding:.75rem 1.5rem;border-radius:4px;font-weight:600;cursor:pointer;border:none;transition:background-color .2s,transform .1s}.btn-primary{background-color:var(--color-primary);color:var(--color-white)}.btn-primary:hover{background-color:#024}.btn-outline{border:2px solid var(--color-primary);color:var(--color-primary);background:transparent}.btn-outline:hover{background-color:var(--color-primary);color:var(--color-white)}.section{padding:var(--spacing-16) 0}.section-title{font-size:var(--font-size-2xl);color:var(--color-primary);margin-bottom:var(--spacing-8);text-align:center}.navbar{background-color:var(--color-white);height:var(--header-height);box-shadow:var(--shadow-sm);position:sticky;top:0;z-index:1000;display:flex;align-items:center}.navbar-container{display:flex;justify-content:space-between;align-items:center;width:100%}.navbar-logo{display:flex;align-items:center;gap:var(--spacing-2);font-size:1.5rem;font-weight:700;color:var(--color-primary)}.navbar-logo img{height:40px;width:auto}.logo-text{display:block}.navbar-links{display:flex;gap:var(--spacing-8);margin:0;padding:0}.nav-link{font-weight:500;color:var(--color-text-main);padding:.5rem 0;position:relative}.nav-link:hover,.nav-link.active{color:var(--color-primary)}.nav-link.active:after{content:"";position:absolute;bottom:0;left:0;width:100%;height:2px;background-color:var(--color-primary)}.navbar-toggle{display:none;cursor:pointer;color:var(--color-text-main)}@media(max-width:768px){.navbar-toggle{display:block}.navbar-links{position:absolute;top:var(--header-height);left:0;width:100%;background-color:var(--color-white);flex-direction:column;padding:var(--spacing-4);gap:var(--spacing-4);box-shadow:var(--shadow-md);transform:translateY(-150%);transition:transform .3s ease-in-out}.navbar-links.active{transform:translateY(0)}.nav-link{display:block;padding:.5rem}}.footer{background-color:var(--color-primary);color:var(--color-white);padding:var(--spacing-16) 0 var(--spacing-4);margin-top:auto}.footer-container{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:var(--spacing-8);margin-bottom:var(--spacing-8)}.footer-section h3{font-size:1.5rem;margin-bottom:var(--spacing-4)}.footer-section h4{font-size:1.1rem;margin-bottom:var(--spacing-2);color:var(--color-secondary)}.footer-section p{color:#ccc;margin-bottom:var(--spacing-2)}.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding-top:var(--spacing-4);text-align:center;font-size:.9rem;color:#999}.hero{background:linear-gradient(135deg,#0a2540,#036);color:var(--color-white);padding:120px 0;text-align:center}.hero-content h1{font-size:3rem;margin-bottom:var(--spacing-4);line-height:1.2}.hero-content p{font-size:1.25rem;max-width:700px;margin:0 auto var(--spacing-8);opacity:.9}.hero-buttons{display:flex;gap:var(--spacing-4);justify-content:center}.hero-buttons .btn-outline{border-color:var(--color-white);color:var(--color-white)}.hero-buttons .btn-outline:hover{background-color:var(--color-white);color:var(--color-primary)}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:var(--spacing-8)}.feature-card{background:var(--color-white);padding:var(--spacing-8);border-radius:8px;box-shadow:var(--shadow-md);text-align:center;transition:transform .2s;border:1px solid var(--color-border)}.feature-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg)}.feature-icon{color:var(--color-secondary);margin-bottom:var(--spacing-4)}.feature-card h3{margin-bottom:var(--spacing-4);color:var(--color-primary)}.feature-card p{color:var(--color-text-light)}.bg-light{background-color:var(--color-bg-light)}.applications-grid{display:flex;flex-wrap:wrap;justify-content:center;gap:var(--spacing-4)}.app-item{background:var(--color-white);padding:var(--spacing-4) var(--spacing-8);border-radius:50px;box-shadow:var(--shadow-sm);font-weight:600;color:var(--color-primary);border:1px solid var(--color-border)}.page-header{background-color:var(--color-bg-light);padding:var(--spacing-12) 0;text-align:center;border-bottom:1px solid var(--color-border)}.page-header h1{color:var(--color-primary);margin-bottom:var(--spacing-2)}.page-header p{color:var(--color-text-light);font-size:1.1rem}.product-category{margin-bottom:var(--spacing-16)}.product-category h2{color:var(--color-primary);margin-bottom:var(--spacing-2);border-left:5px solid var(--color-secondary);padding-left:var(--spacing-4)}.category-desc{margin-bottom:var(--spacing-8);font-size:1.1rem;color:var(--color-text-light)}.product-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:var(--spacing-8)}.product-item{background:var(--color-white);border:1px solid var(--color-border);padding:var(--spacing-6);border-radius:8px;padding:1.5rem}.product-item h3{color:var(--color-text-main);margin-bottom:var(--spacing-2);font-size:1.25rem}.product-item p{color:var(--color-text-light);font-size:.95rem}.divider{border:0;border-top:1px solid var(--color-border);margin:var(--spacing-16) 0}