:root {
            --primary-color: #667eea;
            --secondary-color: #764ba2;
            --accent-color: #ff6b6b;
            --text-main: #333333;
            --text-light: #666666;
            --bg-body: #ffffff;
            --bg-section: #f8f9fa;
            --border-color: #eaeaea;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.05);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.1);
            --gradient-main: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            --gradient-hover: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
            --container-width: 1200px;
            --header-height: 70px;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
            color: var(--text-main);
            background-color: var(--bg-body);
            line-height: 1.6;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.3s ease;
        }

        ul {
            list-style: none;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        .container {
            width: 100%;
            max-width: var(--container-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Header */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: var(--header-height);
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            box-shadow: var(--shadow-sm);
            z-index: 1000;
            display: flex;
            align-items: center;
        }

        .header-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            width: 100%;
        }

        .logo img {
            height: 40px;
            object-fit: contain;
        }

        .nav-menu {
            display: flex;
            gap: 30px;
        }

        .nav-menu a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-main);
            position: relative;
        }

        .nav-menu a:hover {
            color: var(--primary-color);
        }

        .nav-menu a::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--gradient-main);
            transition: width 0.3s ease;
        }

        .nav-menu a:hover::after {
            width: 100%;
        }

        .mobile-toggle {
            display: none;
            font-size: 24px;
            cursor: pointer;
        }

        /* Hero Section */
        #hero {
            padding-top: calc(var(--header-height) + 60px);
            padding-bottom: 80px;
            background: var(--gradient-main);
            color: white;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        #hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iMjAiIGhlaWdodD0iMjAiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyI+PGNpcmNsZSBjeD0iMSIgY3k9IjEiIHI9IjEiIGZpbGw9InJnYmEoMjU1LDI1NSwyNTUsMC4xKSIvPjwvc3ZnPg==');
            opacity: 0.3;
        }

        .hero-content {
            position: relative;
            z-index: 1;
            max-width: 800px;
            margin: 0 auto;
        }

        h1 {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 20px;
            line-height: 1.2;
        }

        .hero-subtitle {
            font-size: 1.1rem;
            margin-bottom: 40px;
            opacity: 0.9;
        }

        .btn-group {
            display: flex;
            gap: 20px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-block;
            padding: 12px 30px;
            border-radius: 50px;
            font-weight: 600;
            cursor: pointer;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border: none;
        }

        .btn-primary {
            background: white;
            color: var(--primary-color);
            box-shadow: 0 4px 15px rgba(0,0,0,0.2);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0,0,0,0.3);
        }

        .btn-outline {
            background: transparent;
            border: 2px solid white;
            color: white;
        }

        .btn-outline:hover {
            background: white;
            color: var(--primary-color);
        }

        /* Sections General */
        section {
            padding: 80px 0;
        }

        .section-title {
            text-align: center;
            margin-bottom: 50px;
        }

        .section-title h2 {
            font-size: 2rem;
            margin-bottom: 15px;
            color: var(--text-main);
        }

        .section-title p {
            color: var(--text-light);
            max-width: 600px;
            margin: 0 auto;
        }

        /* Intro */
        #intro {
            background: white;
        }

        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .intro-text h3 {
            font-size: 1.5rem;
            margin-bottom: 20px;
            color: var(--primary-color);
        }

        .intro-text p {
            margin-bottom: 15px;
            color: var(--text-light);
        }

        .intro-image img {
            border-radius: 12px;
            box-shadow: var(--shadow-md);
        }

        /* Services */
        #services {
            background: var(--bg-section);
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
        }

        .service-card {
            background: white;
            padding: 30px;
            border-radius: 12px;
            box-shadow: var(--shadow-sm);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            border-top: 4px solid transparent;
        }

        .service-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
            border-top-color: var(--primary-color);
        }

        .service-icon {
            font-size: 2rem;
            margin-bottom: 20px;
            color: var(--primary-color);
        }

        .service-card h3 {
            margin-bottom: 15px;
            font-size: 1.25rem;
        }

        .service-card p {
            color: var(--text-light);
            font-size: 0.95rem;
        }

        /* Models */
        #models {
            background: white;
        }

        .model-list {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            justify-content: center;
        }

        .model-tag {
            background: var(--bg-section);
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 0.9rem;
            color: var(--text-main);
            border: 1px solid var(--border-color);
            transition: all 0.3s ease;
        }

        .model-tag:hover {
            background: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
        }

        /* Comparison */
        #comparison {
            background: var(--bg-section);
        }

        .comparison-table-wrapper {
            overflow-x: auto;
            background: white;
            border-radius: 12px;
            box-shadow: var(--shadow-md);
        }

        table {
            width: 100%;
            border-collapse: collapse;
            min-width: 600px;
        }

        th, td {
            padding: 15px;
            text-align: left;
            border-bottom: 1px solid var(--border-color);
        }

        th {
            background: var(--bg-section);
            font-weight: 600;
            color: var(--text-main);
        }

        tr:last-child td {
            border-bottom: none;
        }

        .score-badge {
            display: inline-block;
            background: #e6f4ea;
            color: #1e7e34;
            padding: 4px 8px;
            border-radius: 4px;
            font-weight: bold;
            font-size: 0.9rem;
        }

        /* Reviews */
        #reviews {
            background: white;
        }

        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }

        .review-card {
            background: var(--bg-section);
            padding: 25px;
            border-radius: 12px;
            border-left: 4px solid var(--primary-color);
        }

        .review-header {
            display: flex;
            align-items: center;
            margin-bottom: 15px;
        }

        .review-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: #ddd;
            margin-right: 15px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            color: #666;
        }

        .review-info h4 {
            font-size: 1rem;
            margin-bottom: 2px;
        }

        .review-info span {
            font-size: 0.85rem;
            color: var(--text-light);
        }

        .review-text {
            font-size: 0.95rem;
            color: var(--text-main);
            line-height: 1.5;
        }

        /* Training */
        #training {
            background: var(--bg-section);
        }

        .training-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
        }

        .training-item {
            background: white;
            padding: 20px;
            border-radius: 8px;
            text-align: center;
            box-shadow: var(--shadow-sm);
        }

        .training-item h4 {
            margin-bottom: 10px;
            color: var(--primary-color);
        }

        /* FAQ */
        #faq {
            background: white;
        }

        .faq-container {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid var(--border-color);
            margin-bottom: 10px;
        }

        .faq-question {
            padding: 20px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            color: var(--text-main);
            transition: background 0.3s ease;
        }

        .faq-question:hover {
            background: var(--bg-section);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
            padding: 0 20px;
            color: var(--text-light);
        }

        .faq-item.active .faq-answer {
            max-height: 200px;
            padding-bottom: 20px;
        }

        .faq-icon {
            transition: transform 0.3s ease;
        }

        .faq-item.active .faq-icon {
            transform: rotate(180deg);
        }

        /* Contact */
        #contact {
            background: var(--bg-section);
        }

        .contact-form {
            max-width: 600px;
            margin: 0 auto;
            background: white;
            padding: 40px;
            border-radius: 12px;
            box-shadow: var(--shadow-md);
        }

        .form-group {
            margin-bottom: 20px;
        }

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 500;
            color: var(--text-main);
        }

        .form-control {
            width: 100%;
            padding: 12px;
            border: 1px solid var(--border-color);
            border-radius: 6px;
            font-size: 1rem;
            transition: border-color 0.3s ease;
        }

        .form-control:focus {
            outline: none;
            border-color: var(--primary-color);
        }

        textarea.form-control {
            resize: vertical;
            min-height: 120px;
        }

        .btn-submit {
            width: 100%;
            background: var(--gradient-main);
            color: white;
            padding: 15px;
            border: none;
            border-radius: 6px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: opacity 0.3s ease;
        }

        .btn-submit:hover {
            opacity: 0.9;
        }

        /* Footer */
        footer {
            background: #2c3e50;
            color: #ecf0f1;
            padding: 60px 0 20px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-col h4 {
            font-size: 1.1rem;
            margin-bottom: 20px;
            color: white;
        }

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: #bdc3c7;
            font-size: 0.9rem;
        }

        .footer-links a:hover {
            color: white;
        }

        .footer-bottom {
            border-top: 1px solid #34495e;
            padding-top: 20px;
            text-align: center;
            font-size: 0.85rem;
            color: #95a5a6;
        }

        /* Floating Elements */
        .floating-customer {
            position: fixed;
            bottom: 30px;
            right: 30px;
            z-index: 999;
            background: white;
            padding: 10px;
            border-radius: 12px;
            box-shadow: var(--shadow-md);
            cursor: pointer;
            transition: transform 0.3s ease;
        }

        .floating-customer:hover {
            transform: scale(1.05);
        }

        .floating-customer img {
            width: 100px;
            height: 100px;
            border-radius: 8px;
        }

        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 150px;
            width: 40px;
            height: 40px;
            background: var(--primary-color);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
            z-index: 998;
            box-shadow: var(--shadow-sm);
        }

        .back-to-top.visible {
            opacity: 1;
            visibility: visible;
        }

        /* Responsive */
        @media (max-width: 768px) {
            h1 {
                font-size: 1.8rem;
            }

            .nav-menu {
                display: none;
                position: absolute;
                top: var(--header-height);
                left: 0;
                width: 100%;
                background: white;
                flex-direction: column;
                padding: 20px;
                box-shadow: var(--shadow-md);
                gap: 15px;
            }

            .nav-menu.active {
                display: flex;
            }

            .mobile-toggle {
                display: block;
            }

            .intro-grid {
                grid-template-columns: 1fr;
            }

            .contact-form {
                padding: 20px;
            }

            .floating-customer {
                bottom: 20px;
                right: 20px;
            }

            .back-to-top {
                right: 20px;
            }
        }

        /* Animations */
        .fade-in {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }

        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }