/* Стили только для Materials секции */
        .materials-section {
            width: 100%;
            padding: 100px 0;
            background: linear-gradient(135deg, 
                #f2f7fc 0%, 
                #e9f2fa 50%, 
                #e0ecf8 100%);
            position: relative;
            overflow: hidden;
        }

        .materials-section::before {
            content: '';
            position: absolute;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(39, 174, 96, 0.04) 0%, transparent 70%);
            top: -250px;
            right: -250px;
            z-index: 1;
        }

        .materials-section::after {
            content: '';
            position: absolute;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(41, 128, 185, 0.04) 0%, transparent 70%);
            bottom: -200px;
            left: -200px;
            z-index: 1;
        }

        .materials-section .container {
            max-width: 1200px;
            width: 100%;
            margin: 0 auto;
            padding: 0 20px;
            position: relative;
            z-index: 2;
        }

        .materials-section .section-title {
            text-align: center;
            margin-bottom: 70px;
        }

        .materials-section .section-title h2 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #1a2a3a;
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }

        .materials-section .section-title h2::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: linear-gradient(90deg, #27ae60, #2ecc71);
            border-radius: 2px;
        }

        .materials-section .section-title p {
            font-size: 1.3rem;
            color: #5a6c7d;
            max-width: 600px;
            margin: 25px auto 0;
            line-height: 1.6;
        }

        .materials-section .materials-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
            gap: 30px;
        }

        .materials-section .material-card {
            background: white;
            border-radius: 20px;
            overflow: hidden;
            transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            box-shadow: 
                0 5px 20px rgba(0, 0, 0, 0.05),
                0 1px 5px rgba(0, 0, 0, 0.03);
            border: 1px solid rgba(0, 0, 0, 0.05);
            position: relative;
            z-index: 1;
            display: flex;
            flex-direction: column;
        }

        .materials-section .material-card:hover {
            transform: translateY(-15px);
            box-shadow: 
                0 20px 40px rgba(0, 0, 0, 0.1),
                0 8px 16px rgba(39, 174, 96, 0.1);
            border-color: rgba(39, 174, 96, 0.2);
        }

        .materials-section .material-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 5px;
            background: linear-gradient(90deg, #27ae60, #2ecc71);
            opacity: 0;
            transition: opacity 0.3s ease;
            z-index: 2;
        }

        .materials-section .material-card:hover::before {
            opacity: 1;
        }

        /* Бейджи материалов */
        .materials-section .material-badge {
            position: absolute;
            top: 15px;
            right: 15px;
            padding: 6px 15px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            z-index: 3;
            box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
            color: white;
        }

        .materials-section .material-card:nth-child(1) .material-badge {
            background: linear-gradient(135deg, #e74c3c, #c0392b);
        }

        .materials-section .material-card:nth-child(2) .material-badge {
            background: linear-gradient(135deg, #3498db, #2980b9);
        }

        .materials-section .material-card:nth-child(3) .material-badge {
            background: linear-gradient(135deg, #9b59b6, #8e44ad);
        }

        .materials-section .material-card:nth-child(4) .material-badge {
            background: linear-gradient(135deg, #f39c12, #e67e22);
        }

        .materials-section .material-card:nth-child(5) .material-badge {
            background: linear-gradient(135deg, #1abc9c, #16a085);
        }

        .materials-section .material-card:nth-child(6) .material-badge {
            background: linear-gradient(135deg, #7f8c8d, #34495e);
        }

        .materials-section .material-image {
            height: 220px;
            overflow: hidden;
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .materials-section .material-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

        .materials-section .material-card:hover .material-image img {
            transform: scale(1.1);
        }

        /* Стиль для карточки "Другие материалы" (без изображения) */
        .materials-section .material-card.custom-material .material-image {
            background: linear-gradient(135deg, #f8f9fa, #e9ecef);
        }

        .materials-section .material-card.custom-material .material-image i {
            font-size: 4rem;
            color: #7f8c8d;
            opacity: 0.7;
        }

        .materials-section .material-content {
            padding: 25px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .materials-section .material-content h3 {
            font-size: 1.6rem;
            font-weight: 700;
            color: #1a2a3a;
            margin-bottom: 15px;
            transition: color 0.3s ease;
        }

        .materials-section .material-card:hover .material-content h3 {
            color: #27ae60;
        }

        .materials-section .material-content > p {
            font-size: 1.05rem;
            line-height: 1.7;
            color: #5a6c7d;
            margin-bottom: 20px;
            flex: 1;
        }

        /* Список характеристик материалов */
        .materials-section .material-list {
            list-style: none;
            padding: 0;
            margin: 0;
            border-top: 1px solid rgba(0, 0, 0, 0.08);
            padding-top: 20px;
        }

        .materials-section .material-list li {
            margin-bottom: 12px;
            padding-bottom: 12px;
            border-bottom: 1px dashed rgba(0, 0, 0, 0.05);
            display: flex;
            font-size: 0.95rem;
            line-height: 1.5;
            color: #5a6c7d;
        }

        .materials-section .material-list li:last-child {
            margin-bottom: 0;
            padding-bottom: 0;
            border-bottom: none;
        }

        .materials-section .material-list li strong {
            color: #1a2a3a;
            min-width: 80px;
            margin-right: 10px;
            font-weight: 600;
        }

        /* Цветные маркеры для списка */
        .materials-section .material-card:nth-child(1) .material-list li::before {
            content: '';
            background: #e74c3c;
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            margin-right: 10px;
            flex-shrink: 0;
            margin-top: 6px;
        }

        .materials-section .material-card:nth-child(2) .material-list li::before {
            content: '';
            background: #3498db;
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            margin-right: 10px;
            flex-shrink: 0;
            margin-top: 6px;
        }

        .materials-section .material-card:nth-child(3) .material-list li::before {
            content: '';
            background: #9b59b6;
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            margin-right: 10px;
            flex-shrink: 0;
            margin-top: 6px;
        }

        .materials-section .material-card:nth-child(4) .material-list li::before {
            content: '';
            background: #f39c12;
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            margin-right: 10px;
            flex-shrink: 0;
            margin-top: 6px;
        }

        .materials-section .material-card:nth-child(5) .material-list li::before {
            content: '';
            background: #1abc9c;
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            margin-right: 10px;
            flex-shrink: 0;
            margin-top: 6px;
        }

        .materials-section .material-card:nth-child(6) .material-list li::before {
            content: '';
            background: #7f8c8d;
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            margin-right: 10px;
            flex-shrink: 0;
            margin-top: 6px;
        }

        /* Кнопка для "Другие материалы" */
        .materials-section .material-request-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: linear-gradient(135deg, #7f8c8d 0%, #34495e 100%);
            color: white;
            font-size: 0.95rem;
            font-weight: 600;
            padding: 12px 25px;
            border-radius: 50px;
            text-decoration: none;
            transition: all 0.3s ease;
            box-shadow: 
                0 3px 10px rgba(127, 140, 141, 0.3),
                0 1px 3px rgba(0, 0, 0, 0.1);
            border: none;
            cursor: pointer;
            margin-top: 15px;
            position: relative;
            overflow: hidden;
            z-index: 1;
        }

        .materials-section .material-request-btn::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, #34495e 0%, #2c3e50 100%);
            z-index: -1;
            opacity: 0;
            transition: opacity 0.3s ease;
            border-radius: 50px;
        }

        .materials-section .material-request-btn:hover {
            transform: translateY(-3px);
            box-shadow: 
                0 6px 18px rgba(127, 140, 141, 0.4),
                0 2px 5px rgba(0, 0, 0, 0.1);
        }

        .materials-section .material-request-btn:hover::before {
            opacity: 1;
        }

        .materials-section .material-request-btn i {
            font-size: 0.9rem;
            transition: transform 0.3s ease;
        }

        .materials-section .material-request-btn:hover i {
            transform: translateX(5px);
        }

        /* Декоративные элементы */
        .materials-section .decor-sphere {
            position: absolute;
            border-radius: 50%;
            z-index: 1;
            opacity: 0.05;
        }

        .materials-section .decor-sphere-1 {
            width: 120px;
            height: 120px;
            background: #27ae60;
            top: 15%;
            left: 5%;
            animation: float-sphere 20s infinite ease-in-out;
        }

        .materials-section .decor-sphere-2 {
            width: 80px;
            height: 80px;
            background: #3498db;
            bottom: 20%;
            right: 8%;
            animation: float-sphere 25s infinite ease-in-out reverse;
        }

        @keyframes float-sphere {
            0%, 100% { transform: translateY(0) rotate(0deg); }
            33% { transform: translateY(-20px) rotate(120deg); }
            66% { transform: translateY(20px) rotate(240deg); }
        }

        /* Анимация появления карточек */
        @keyframes fadeInUpMaterial {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .materials-section .material-card {
            animation: fadeInUpMaterial 0.6s ease forwards;
            opacity: 0;
        }

        .materials-section .material-card:nth-child(1) { animation-delay: 0.1s; }
        .materials-section .material-card:nth-child(2) { animation-delay: 0.2s; }
        .materials-section .material-card:nth-child(3) { animation-delay: 0.3s; }
        .materials-section .material-card:nth-child(4) { animation-delay: 0.4s; }
        .materials-section .material-card:nth-child(5) { animation-delay: 0.5s; }
        .materials-section .material-card:nth-child(6) { animation-delay: 0.6s; }

        /* Адаптивность */
        @media (max-width: 1200px) {
            .materials-section .materials-grid {
                grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
            }
        }

        @media (max-width: 992px) {
            .materials-section {
                padding: 80px 0;
            }
            
            .materials-section .section-title h2 {
                font-size: 2.4rem;
            }
            
            .materials-section .section-title p {
                font-size: 1.2rem;
            }
            
            .materials-section .materials-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 25px;
            }
            
            .materials-section .material-image {
                height: 200px;
            }
            
            .materials-section .material-content h3 {
                font-size: 1.5rem;
            }
        }

        @media (max-width: 768px) {
            .materials-section {
                padding: 70px 0;
            }
            
            .materials-section .section-title h2 {
                font-size: 2.2rem;
            }
            
            .materials-section .section-title p {
                font-size: 1.1rem;
            }
            
            .materials-section .materials-grid {
                grid-template-columns: 1fr;
                max-width: 500px;
                margin: 0 auto;
            }
            
            .materials-section .material-image {
                height: 220px;
            }
            
            .materials-section .decor-sphere {
                display: none;
            }
        }

        @media (max-width: 480px) {
            .materials-section {
                padding: 60px 0;
            }
            
            .materials-section .section-title h2 {
                font-size: 2rem;
            }
            
            .materials-section .material-content {
                padding: 20px;
            }
            
            .materials-section .material-content h3 {
                font-size: 1.4rem;
            }
            
            .materials-section .material-content > p {
                font-size: 1rem;
            }
            
            .materials-section .material-list li {
                font-size: 0.9rem;
                flex-direction: column;
            }
            
            .materials-section .material-list li strong {
                margin-bottom: 5px;
            }
        }

        /* Стили для демонстрационного контента (не входят в секцию) */
        .demo-content {
            padding: 60px 20px;
            background-color: #1a2a3a;
            color: white;
        }
        
        .demo-container {
            max-width: 1200px;
            margin: 0 auto;
        }
        
        .demo-content h2 {
            margin-bottom: 20px;
        }