/* Стили только для Portfolio секции */
        .portfolio-section {
            width: 100%;
            padding: 100px 0;
            background: linear-gradient(135deg, 
                #ffffff 0%, 
                #f9fbfd 50%, 
                #f2f7fc 100%);
            position: relative;
            overflow: hidden;
        }

        .portfolio-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;
            left: -250px;
            z-index: 1;
        }

        .portfolio-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;
            right: -200px;
            z-index: 1;
        }

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

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

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

        .portfolio-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;
        }

        .portfolio-section .section-title p {
            font-size: 1.3rem;
            color: #5a6c7d;
            max-width: 700px;
            margin: 25px auto 0;
            line-height: 1.6;
        }

        .portfolio-section .portfolio-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
            gap: 30px;
            margin-bottom: 50px;
        }

        .portfolio-section .portfolio-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;
        }

        .portfolio-section .portfolio-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);
        }

        .portfolio-section .portfolio-badge {
            position: absolute;
            top: 15px;
            left: 15px;
            background: linear-gradient(135deg, #27ae60, #2ecc71);
            color: white;
            font-size: 0.85rem;
            font-weight: 600;
            padding: 6px 15px;
            border-radius: 50px;
            z-index: 3;
            box-shadow: 0 3px 10px rgba(39, 174, 96, 0.3);
        }

        .portfolio-section .portfolio-image {
            height: 250px;
            overflow: hidden;
            position: relative;
        }

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

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

        .portfolio-section .portfolio-content {
            padding: 25px;
        }

        .portfolio-section .portfolio-header {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            margin-bottom: 15px;
        }

        .portfolio-section .portfolio-header h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: #1a2a3a;
            flex: 1;
            margin-right: 15px;
            transition: color 0.3s ease;
        }

        .portfolio-section .portfolio-card:hover .portfolio-header h3 {
            color: #27ae60;
        }

        .portfolio-section .portfolio-price {
            font-size: 1.3rem;
            font-weight: 700;
            color: #27ae60;
            background: rgba(39, 174, 96, 0.1);
            padding: 5px 15px;
            border-radius: 8px;
            white-space: nowrap;
        }

        .portfolio-section .portfolio-description {
            font-size: 1.05rem;
            line-height: 1.7;
            color: #5a6c7d;
            margin-bottom: 20px;
        }

        .portfolio-section .portfolio-details {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            padding-top: 15px;
            border-top: 1px solid rgba(0, 0, 0, 0.08);
        }

        .portfolio-section .detail-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: #5a6c7d;
            background: rgba(0, 0, 0, 0.03);
            padding: 6px 12px;
            border-radius: 6px;
        }

        .portfolio-section .detail-item i {
            color: #27ae60;
            font-size: 0.9rem;
        }

        .portfolio-section .portfolio-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            background: linear-gradient(135deg, #27ae60 0%, #2ecc71 100%);
            color: white;
            font-size: 1.1rem;
            font-weight: 600;
            padding: 16px 35px;
            border-radius: 50px;
            text-decoration: none;
            transition: all 0.3s ease;
            box-shadow: 
                0 5px 15px rgba(39, 174, 96, 0.3),
                0 2px 5px rgba(0, 0, 0, 0.1);
            border: none;
            cursor: pointer;
            margin-top: 15px;
            position: relative;
            overflow: hidden;
            z-index: 1;
        }

        .portfolio-section .portfolio-btn::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, #1e8449 0%, #27ae60 100%);
            z-index: -1;
            opacity: 0;
            transition: opacity 0.3s ease;
            border-radius: 50px;
        }

        .portfolio-section .portfolio-btn:hover {
            transform: translateY(-5px);
            box-shadow: 
                0 10px 25px rgba(39, 174, 96, 0.4),
                0 5px 10px rgba(0, 0, 0, 0.1);
        }

        .portfolio-section .portfolio-btn:hover::before {
            opacity: 1;
        }

        .portfolio-section .portfolio-btn:active {
            transform: translateY(-2px);
            box-shadow: 
                0 5px 15px rgba(39, 174, 96, 0.3),
                0 2px 5px rgba(0, 0, 0, 0.1);
        }

        .portfolio-section .portfolio-btn i {
            font-size: 1.1rem;
            transition: transform 0.3s ease;
        }

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

        .portfolio-section .text-center {
            text-align: center;
            margin-top: 40px;
        }

        /* Декоративные элементы */
        .portfolio-section .decor-cube {
            position: absolute;
            width: 60px;
            height: 60px;
            background: rgba(39, 174, 96, 0.05);
            border: 1px solid rgba(39, 174, 96, 0.1);
            z-index: 1;
            transform: rotate(15deg);
            animation: rotate-cube 30s infinite linear;
        }

        .portfolio-section .decor-cube:nth-child(1) {
            top: 15%;
            left: 5%;
            width: 40px;
            height: 40px;
            animation-delay: 0s;
        }

        .portfolio-section .decor-cube:nth-child(2) {
            bottom: 20%;
            right: 8%;
            width: 50px;
            height: 50px;
            animation-delay: -10s;
        }

        @keyframes rotate-cube {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

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

        .portfolio-section .portfolio-card {
            animation: fadeInUp 0.6s ease forwards;
            opacity: 0;
        }

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

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

        @media (max-width: 992px) {
            .portfolio-section {
                padding: 80px 0;
            }
            
            .portfolio-section .section-title h2 {
                font-size: 2.4rem;
            }
            
            .portfolio-section .section-title p {
                font-size: 1.2rem;
            }
            
            .portfolio-section .portfolio-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 25px;
            }
            
            .portfolio-section .portfolio-image {
                height: 220px;
            }
        }

        @media (max-width: 768px) {
            .portfolio-section {
                padding: 70px 0;
            }
            
            .portfolio-section .section-title h2 {
                font-size: 2.2rem;
            }
            
            .portfolio-section .section-title p {
                font-size: 1.1rem;
            }
            
            .portfolio-section .portfolio-grid {
                grid-template-columns: 1fr;
                max-width: 500px;
                margin: 0 auto 40px;
            }
            
            .portfolio-section .portfolio-image {
                height: 240px;
            }
            
            .portfolio-section .portfolio-header h3 {
                font-size: 1.3rem;
            }
            
            .portfolio-section .portfolio-price {
                font-size: 1.2rem;
            }
            
            .portfolio-section .portfolio-description {
                font-size: 1.05rem;
            }
            
            .portfolio-section .decor-cube {
                display: none;
            }
        }

        @media (max-width: 480px) {
            .portfolio-section {
                padding: 60px 0;
            }
            
            .portfolio-section .section-title h2 {
                font-size: 2rem;
            }
            
            .portfolio-section .portfolio-content {
                padding: 20px;
            }
            
            .portfolio-section .portfolio-header {
                flex-direction: column;
                gap: 10px;
            }
            
            .portfolio-section .portfolio-header h3 {
                margin-right: 0;
            }
            
            .portfolio-section .portfolio-price {
                align-self: flex-start;
            }
            
            .portfolio-section .portfolio-btn {
                width: 100%;
                justify-content: center;
            }
        }

        /* 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;
        }