:root {
            --primary-color: #1a5fb4;
            --secondary-color: #3584e4;
            --accent-color: #62a0ea;
            --light-color: #99c1f1;
            --dark-color: #0d2c4d;
            --text-color: #333;
            --light-bg: #f8f9fa;
            --border-color: #dee2e6;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            line-height: 1.6;
            color: var(--text-color);
            background-color: #fff;
        }
        
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        header {
            background-color: var(--dark-color);
            color: white;
            position: fixed;
            width: 100%;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        }
        
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 20px;
        }
        
        .logo {
            font-size: 24px;
            font-weight: bold;
            color: white;
            text-decoration: none;
        }
        
        nav ul {
            display: flex;
            list-style: none;
        }
        
        nav ul li {
            margin-left: 25px;
        }
        
        nav ul li a {
            color: white;
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s;
        }
        
        nav ul li a:hover {
            color: var(--accent-color);
        }
        
        .burger-menu {
            display: none;
            flex-direction: column;
            cursor: pointer;
        }
        
        .burger-menu span {
            width: 25px;
            height: 3px;
            background-color: white;
            margin: 3px 0;
            transition: 0.3s;
        }
        
        main {
            margin-top: 70px;
        }
        
        .page-header {
            background: linear-gradient(rgba(13, 44, 77, 0.8), rgba(13, 44, 77, 0.8)), url('../img/07.webp');
            background-size: cover;
            background-position: center;
            color: white;
            padding: 100px 0;
            text-align: center;
        }
        
        .page-header h1 {
            font-size: 3rem;
            margin-bottom: 20px;
        }
        
        .page-header p {
            font-size: 1.2rem;
            max-width: 700px;
            margin: 0 auto;
        }
        
        .products-section {
            padding: 80px 0;
        }
        
        .section-title {
            text-align: center;
            margin-bottom: 50px;
        }
        
        .section-title h2 {
            font-size: 2.5rem;
            color: var(--dark-color);
            margin-bottom: 15px;
        }
        
        .section-title p {
            font-size: 1.1rem;
            max-width: 700px;
            margin: 0 auto;
            color: #666;
        }
        
        .products-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
            gap: 30px;
        }
        
        .product-card {
            background-color: white;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            overflow: hidden;
            transition: transform 0.3s, box-shadow 0.3s;
        }
        
        .product-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        
        .product-image {
            height: 200px;
            overflow: hidden;
        }
        
        .product-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s;
        }
        
        .product-card:hover .product-image img {
            transform: scale(1.1);
        }
        
        .product-content {
            padding: 25px;
        }
        
        .product-category {
            color: var(--primary-color);
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 10px;
        }
        
        .product-title {
            font-size: 1.5rem;
            margin-bottom: 15px;
            color: var(--dark-color);
        }
        
        .product-description {
            margin-bottom: 20px;
            color: #666;
        }
        
        .product-features {
            margin-bottom: 20px;
        }
        
        .product-features li {
            margin-bottom: 8px;
            padding-left: 20px;
            position: relative;
            list-style-type: none;
        }
        
        .product-features li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--primary-color);
            font-weight: bold;
        }
        
        .product-footer {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .product-price {
            font-size: 1.5rem;
            font-weight: bold;
            color: var(--primary-color);
        }
        
        .btn {
            display: inline-block;
            background-color: var(--primary-color);
            color: white;
            padding: 10px 20px;
            border-radius: 4px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s;
            border: none;
            cursor: pointer;
        }
        
        .btn:hover {
            background-color: var(--secondary-color);
        }
        
        .filter-section {
            padding: 40px 0;
            background-color: var(--light-bg);
        }
        
        .filter-container {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 15px;
        }
        
        .filter-btn {
            padding: 10px 20px;
            background-color: white;
            border: 1px solid var(--border-color);
            border-radius: 30px;
            cursor: pointer;
            transition: all 0.3s;
        }
        
        .filter-btn:hover, .filter-btn.active {
            background-color: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
        }
        
        .modal {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-color: rgba(0, 0, 0, 0.7);
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 1002;
            opacity: 0;
            visibility: hidden;
            transition: opacity 0.3s, visibility 0.3s;
        }
        
        .modal.show {
            opacity: 1;
            visibility: visible;
        }
        
        .modal-content {
            background-color: white;
            border-radius: 8px;
            max-width: 800px;
            width: 90%;
            max-height: 90vh;
            overflow-y: auto;
            position: relative;
            transform: scale(0.8);
            transition: transform 0.3s;
        }
        
        .modal.show .modal-content {
            transform: scale(1);
        }
        
        .modal-header {
            padding: 20px;
            border-bottom: 1px solid var(--border-color);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .modal-title {
            font-size: 1.5rem;
            color: var(--dark-color);
        }
        
        .modal-close {
            width: 30px;
            height: 30px;
            background-color: var(--light-bg);
            border: none;
            border-radius: 50%;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background-color 0.3s;
        }
        
        .modal-close:hover {
            background-color: var(--border-color);
        }
        
        .modal-body {
            padding: 20px;
        }
        
        .modal-features {
            margin: 20px 0;
        }
        
        .modal-features h4 {
            margin-bottom: 10px;
            color: var(--dark-color);
        }
        
        .modal-features ul {
            list-style: none;
            padding-left: 20px;
        }
        
        .modal-features li {
            margin-bottom: 8px;
            position: relative;
            padding-left: 20px;
        }
        
        .modal-features li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--primary-color);
        }
        
        footer {
            background-color: var(--dark-color);
            color: white;
            padding: 50px 0 20px;
        }
        
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            margin-bottom: 30px;
        }
        
        .footer-column h3 {
            font-size: 1.3rem;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }
        
        .footer-column h3::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 50px;
            height: 2px;
            background-color: var(--primary-color);
        }
        
        .footer-column ul {
            list-style: none;
        }
        
        .footer-column ul li {
            margin-bottom: 10px;
        }
        
        .footer-column ul li a {
            color: #ccc;
            text-decoration: none;
            transition: color 0.3s;
        }
        
        .footer-column ul li a:hover {
            color: var(--accent-color);
        }
        
        .footer-bottom {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #ccc;
        }
        
        @media (max-width: 768px) {
            .header-container {
                padding: 10px 20px;
            }
            
            nav ul {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background-color: var(--dark-color);
                flex-direction: column;
                padding: 20px;
            }
            
            nav ul.show {
                display: flex;
            }
            
            nav ul li {
                margin: 10px 0;
            }
            
            .burger-menu {
                display: flex;
            }
            
            .page-header h1 {
                font-size: 2rem;
            }
            
            .products-grid {
                grid-template-columns: 1fr;
            }
        }