:root {
            --primary: #E63946;
            --secondary: #457B9D;
            --accent: #A8DADC;
            --dark: #1D3557;
            --light: #F1FAEE;
            --highlight: #FFBE0B;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Courier New', monospace;
        }
        
        body {
            background-color: var(--light);
            color: var(--dark);
            line-height: 1.6;
            padding-top: 80px;
            overflow-x: hidden;
        }
        
        /* Конструктивистская типографика */
        h1, h2, h3 {
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 1rem;
            font-family: 'Impact', sans-serif;
        }
        
        h1 {
            font-size: 2.5rem;
            line-height: 1.2;
            color: var(--primary);
            text-shadow: 3px 3px 0 var(--highlight);
        }
        
        h2 {
            font-size: 1.8rem;
            border-bottom: 3px solid var(--primary);
            padding-bottom: 0.5rem;
            display: inline-block;
        }
        
        h3 {
            font-size: 1.4rem;
            color: var(--secondary);
        }
        
        p {
            margin-bottom: 1.5rem;
            font-size: 1.1rem;
        }
        
        a {
            color: var(--primary);
            text-decoration: none;
            transition: all 0.3s ease;
        }
        
        a:hover {
            color: var(--dark);
            text-decoration: underline;
        }
        
        /* Асимметричная сетка */
        .container {
            width: 90%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 2rem 0;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }
        
        .full-width {
            grid-column: 1 / -1;
        }
        
        .two-thirds {
            grid-column: span 2;
        }
        
        .one-third {
            grid-column: span 1;
        }
        
        /* Фиксированный хедер в конструктивистском стиле */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background-color: var(--dark);
            color: var(--light);
            padding: 1rem 2rem;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-bottom: 5px solid var(--highlight);
        }
        
        .logo {
            font-size: 1.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 3px;
            color: var(--light);
        }
        
        .logo span {
            color: var(--highlight);
        }

        .logo:hover{
            color: #fff;
        }
        
        /* Бургер-меню */
        .burger-menu {
            display: none;
            cursor: pointer;
            flex-direction: column;
            justify-content: space-between;
            width: 30px;
            height: 21px;
        }
        
        .burger-menu span {
            display: block;
            width: 100%;
            height: 3px;
            background-color: var(--light);
            transition: all 0.3s ease;
        }
        
        .nav-links {
            display: flex;
            list-style: none;
        }
        
        .nav-links li {
            margin-left: 2rem;
        }
        
        .nav-links a {
            color: var(--light);
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            font-size: 0.9rem;
            position: relative;
        }
        
        .nav-links a:hover {
            color: var(--highlight);
            text-decoration: none;
        }
        
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--highlight);
            transition: width 0.3s ease;
        }
        
        .nav-links a:hover::after {
            width: 100%;
        }
        
        /* Герой секция с параллакс эффектом */
        .hero {
            height: 80vh;
            background-image: linear-gradient(rgba(29, 53, 87, 0.7), rgba(29, 53, 87, 0.7)), url('../img/1.jpg');
            background-size: cover;
            background-position: center;
            background-attachment: fixed;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
            color: var(--light);
            padding: 0 2rem;
            position: relative;
            overflow: hidden;
        }
        
        .hero-content {
            max-width: 800px;
            z-index: 2;
        }
        
        .hero h1 {
            color: var(--light);
            text-shadow: 3px 3px 0 var(--primary);
            margin-bottom: 1.5rem;
            font-size: 3.5rem;
        }
        
        .hero p {
            font-size: 1.3rem;
            margin-bottom: 2rem;
        }
        
        /* Кнопки в стиле конструктивизма */
        .btn {
            display: inline-block;
            padding: 0.8rem 2rem;
            background-color: var(--primary);
            color: var(--light);
            border: none;
            border-radius: 0;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            cursor: pointer;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
            box-shadow: 5px 5px 0 var(--dark);
        }
        
        .btn:hover {
            background-color: var(--highlight);
            color: var(--dark);
            box-shadow: 5px 5px 0 var(--primary);
            transform: translate(-2px, -2px);
        }
        
        .btn-secondary {
            background-color: transparent;
            border: 2px solid var(--light);
            color: var(--light);
            box-shadow: none;
        }
        
        .btn-secondary:hover {
            background-color: var(--light);
            color: var(--dark);
            border-color: var(--light);
        }
        
        /* Карточки продуктов */
        .product-card {
            background-color: var(--light);
            border: 3px solid var(--dark);
            padding: 2rem;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }
        
        .product-card:hover {
            transform: translate(-5px, -5px);
            box-shadow: 10px 10px 0 var(--primary);
        }
        
        .product-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            margin-bottom: 1rem;
            border: 2px solid var(--dark);
        }
        
        .product-card h3 {
            margin-bottom: 0.5rem;
        }
        
        .price {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            margin: 1rem 0;
        }
        
        .old-price {
            text-decoration: line-through;
            color: var(--secondary);
            font-size: 1.2rem;
            margin-right: 0.5rem;
        }
        
        /* Форма заказа */
        .order-form {
            background-color: var(--accent);
            padding: 2rem;
            border: 3px solid var(--dark);
        }
        
        .form-group {
            margin-bottom: 1.5rem;
        }
        
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            font-size: 0.9rem;
        }
        
        .form-group input {
            width: 100%;
            padding: 0.8rem;
            border: 2px solid var(--dark);
            background-color: var(--light);
            font-size: 1rem;
        }
        
        .form-group input:focus {
            outline: none;
            border-color: var(--primary);
        }
        
        /* Отзывы */
        .testimonials {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 2rem;
        }
        
        .testimonial {
            background-color: var(--light);
            border-left: 5px solid var(--primary);
            padding: 1.5rem;
            box-shadow: 5px 5px 0 rgba(0, 0, 0, 0.1);
        }
        
        .testimonial-author {
            font-weight: 700;
            margin-top: 1rem;
            color: var(--secondary);
        }
        
        /* FAQ */
        .faq-item {
            margin-bottom: 1.5rem;
            border-bottom: 2px solid var(--accent);
            padding-bottom: 1rem;
        }
        
        .faq-question {
            font-weight: 700;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .faq-question::after {
            content: '+';
            font-size: 1.5rem;
        }
        
        .faq-question.active::after {
            content: '-';
        }
        
        .faq-answer {
            display: none;
            padding-top: 1rem;
        }
        
        /* Научные исследования */
        .research-item {
            margin-bottom: 2rem;
            padding-left: 1.5rem;
            border-left: 3px solid var(--secondary);
        }
        
        /* Контакты */
        .contact-info {
            margin-bottom: 2rem;
        }
        
        .contact-info p {
            display: flex;
            align-items: center;
            margin-bottom: 0.5rem;
        }
        
        .contact-info i {
            margin-right: 0.5rem;
            color: var(--primary);
        }
        
        /* Футер */
        footer {
            background-color: var(--dark);
            color: var(--light);
            padding: 3rem 0;
            text-align: center;
        }
        
        .footer-links {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 2rem;
        }
        
        .footer-links a {
            color: var(--light);
            margin: 0 1rem;
            text-transform: uppercase;
            font-size: 0.9rem;
            letter-spacing: 1px;
        }
        
        .footer-links a:hover {
            color: var(--highlight);
        }
        
        .copyright {
            font-size: 0.9rem;
            opacity: 0.8;
        }
        
        /* Попап */
        .popup {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.8);
            display: flex;
            justify-content: center;
            align-items: center;
            z-index: 2000;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
        }
        
        .popup-content {
            background-color: var(--light);
            padding: 3rem;
            text-align: center;
            max-width: 500px;
            position: relative;
        }
        
        .popup.active {
            opacity: 1;
            visibility: visible;
        }
        
        .close-popup {
            position: absolute;
            top: 1rem;
            right: 1rem;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--primary);
        }
        
        /* Анимации */
        @keyframes float {
            0% { transform: translateY(0px); }
            50% { transform: translateY(-10px); }
            100% { transform: translateY(0px); }
        }
        
        .floating {
            animation: float 3s ease-in-out infinite;
        }
        
        /* Медиа запросы */
        @media (max-width: 768px) {
            .burger-menu {
                display: flex;
            }
            
            .nav-links {
                position: fixed;
                top: 80px;
                left: 0;
                width: 100%;
                background-color: var(--dark);
                flex-direction: column;
                align-items: center;
                padding: 2rem 0;
                clip-path: circle(0px at 90% -10%);
                transition: all 0.5s ease-out;
            }
            
            .nav-links.active {
                clip-path: circle(1000px at 90% -10%);
            }
            
            .nav-links li {
                margin: 1rem 0;
            }
            
            h1 {
                font-size: 2rem;
            }
            
            .hero h1 {
                font-size: 2.5rem;
            }
            
            .container {
                grid-template-columns: 1fr;
            }
            
            .two-thirds, .one-third {
                grid-column: 1 / -1;
            }
        }