:root {
            --yellow: #FFD700;
            --yellow-dark: #FFC700;
            --yellow-light: #FFF9E6;
            --black: #1a1a1a;
            --gray: #666;
            --gray-light: #f9f9f9;
            --gray-medium: #e8e8e8;
            --white: #ffffff;
            --border: #e0e0e0;
            --shadow: 0 4px 20px rgba(0,0,0,0.08);
            --shadow-hover: 0 8px 30px rgba(0,0,0,0.12);
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            line-height: 1.6;
            color: var(--black);
            background: var(--white);
        }

        /* Top Bar */
        .top-bar {
            background: #2a2a2a;
            padding: 6px 0;
            font-size: 13px;
            color: #ccc;
        }

        .top-bar-content {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
        }

        .top-bar-content div {
            display: flex;
            align-items: center;
            gap: 5px;
        }

        .top-bar-content strong {
            color: var(--yellow);
            font-weight: 600;
        }

        /* Header */
        header {
            background: var(--white);
            box-shadow: 0 2px 12px rgba(0,0,0,0.04);
            position: sticky;
            top: 0;
            z-index: 100;
        }

        .header-content {
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 40px;
        }

        .header-logos {
            display: flex;
            align-items: center;
            gap: 20px;
        }

        .logo-akst {
            display: block;
            height: 45px;
        }

        .logo-kronatek {
            display: block;
            height: 45px;
        }

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

        .logo-divider {
            font-size: 30px;
            color: #ddd;
            font-weight: 200;
            margin: 0 5px;
        }

        .logo {
            font-size: 32px;
            font-weight: 900;
            color: var(--black);
            text-decoration: none;
        }

        .logo span {
            color: var(--yellow);
        }

        .header-contacts {
            display: flex;
            flex-direction: column;
            gap: 6px;
            align-items: center;
        }

        .header-phone {
            color: var(--black);
            text-decoration: none;
            font-weight: 700;
            font-size: 22px;
            letter-spacing: -0.5px;
        }

        .header-phone:hover {
            color: var(--yellow-dark);
        }

        .header-messengers {
            display: flex;
            gap: 12px;
        }

        .messenger-link {
            color: var(--white);
            text-decoration: none;
            font-size: 13px;
            font-weight: 600;
            transition: all 0.2s;
            padding: 6px 14px;
            border-radius: 6px;
            display: inline-block;
        }

        .messenger-link.telegram {
            background: #0088cc;
        }

        .messenger-link.telegram:hover {
            background: #006699;
        }

        .messenger-link.max {
            background: #4a47ff;
        }
		
		.messenger-link.max:hover {
            background: #3d3bc5;
        }

        .header-contacts a {
            color: #fff;
            text-decoration: none;
            font-weight: 600;
            font-size: 18px;
        }
		
		.header-contacts a.header-phone {
            color: #000;
        }
		
		.header-contacts a.header-phone:hover {
            color: #000;
			text-decoration: underline;
        }

        .header-contacts a:hover {
            color: #fff;
        }

        /* Buttons */
        .btn {
            display: inline-block;
            padding: 18px 40px;
            font-size: 17px;
            font-weight: 700;
            text-decoration: none;
            border-radius: 10px;
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
            text-align: center;
            letter-spacing: -0.3px;
        }

        .btn-primary {
            background: var(--yellow);
            color: var(--black);
            box-shadow: 0 4px 14px rgba(255, 215, 0, 0.3);
        }

        .btn-primary:hover {
            background: var(--yellow-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 215, 0, 0.4);
        }

        .btn-secondary {
            background: var(--white);
            color: var(--black);
            border: 2px solid var(--gray-medium);
        }

        .btn-secondary:hover {
            background: var(--gray-light);
            border-color: var(--black);
        }

        .btn-large {
            padding: 22px 50px;
            font-size: 19px;
        }

        /* Container */
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Section */
        section {
            padding: 80px 0;
        }

        section:nth-child(even) {
            background: var(--gray-light);
        }

        h1, h2, h3 {
            font-weight: 900;
            line-height: 1.2;
            margin-bottom: 20px;
        }

        h1 {
            font-size: 48px;
        }

        h2 {
            font-size: 36px;
        }

        h3 {
            font-size: 24px;
        }

        p {
            margin-bottom: 15px;
        }

        /* Hero Section */
        .hero {
            background: linear-gradient(180deg, #fafafa 0%, var(--white) 100%);
            padding: 60px 0 80px;
            position: relative;
            overflow: hidden;
        }

        .hero-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
            margin-bottom: 60px;
        }

        .hero-text h1 {
            font-size: 52px;
            line-height: 1.1;
            margin-bottom: 10px;
            letter-spacing: -1.2px;
        }

        .hero-subtitle {
            font-size: 28px;
            color: var(--yellow-dark);
            margin-bottom: 20px;
            font-weight: 700;
            letter-spacing: -0.5px;
        }

        .hero-description {
            font-size: 17px;
            color: var(--gray);
            line-height: 1.6;
            margin-bottom: 40px;
        }

        .usp-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin: 0;
        }

        .usp-card {
            background: var(--white);
            padding: 30px 25px;
            border-radius: 12px;
            box-shadow: var(--shadow);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            position: relative;
            border-left: 4px solid var(--yellow);
        }

        .usp-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-hover);
        }

        .usp-number {
            position: absolute;
            top: 25px;
            right: 25px;
            width: 36px;
            height: 36px;
            background: var(--yellow-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 900;
            color: var(--black);
        }

        .usp-card h3 {
            font-size: 16px;
            margin-bottom: 10px;
            font-weight: 700;
            line-height: 1.3;
            padding-right: 45px;
        }

        .usp-card p {
            font-size: 13px;
            color: var(--gray);
            line-height: 1.5;
            margin: 0;
        }

        .usp-list {
            list-style: none;
            margin: 30px 0;
        }

        .usp-list li {
            padding: 15px 0;
            border-bottom: 1px solid var(--border);
            font-size: 18px;
        }

        .usp-list li:before {
            content: "✅ ";
            margin-right: 10px;
        }

        .hero-cta {
            display: flex;
            gap: 15px;
            margin-top: 40px;
            flex-wrap: wrap;
            align-items: center;
        }

        .hero-phone-text {
            color: var(--gray);
            font-size: 15px;
        }

        .hero-phone-text a {
            color: var(--black);
            font-weight: 700;
            text-decoration: none;
        }

        .hero-phone-text a:hover {
            color: var(--yellow-dark);
        }

        .badge {
            position: absolute;
            top: 20px;
            right: 20px;
            background: var(--yellow);
            color: var(--black);
            padding: 10px 20px;
            border-radius: 8px;
            font-weight: 700;
            font-size: 14px;
            box-shadow: 0 4px 12px rgba(255, 215, 0, 0.3);
            z-index: 10;
        }

        .hero-image {
            position: relative;
        }

        .hero-image img {
            width: 100%;
            border-radius: 20px;
            box-shadow: 0 20px 60px rgba(0,0,0,0.15);
            border: 8px solid var(--white);
        }

        /* Problem Section */
        .problem-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            margin-top: 40px;
        }

        .problem-card {
            background: var(--white);
            padding: 30px;
            border-radius: 12px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.05);
        }

        .problem-card h3 {
            color: #c00;
        }

        /* Steps Section */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-top: 40px;
        }

        .step-card {
            text-align: center;
            padding: 30px;
            background: var(--white);
            border-radius: 12px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.05);
        }

        .step-number {
            width: 60px;
            height: 60px;
            background: var(--yellow);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            font-weight: 900;
            margin: 0 auto 20px;
        }

        /* Table */
        .comparison-table {
            width: 100%;
            margin-top: 40px;
            border-collapse: collapse;
            background: var(--white);
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 4px 20px rgba(0,0,0,0.05);
        }

        .comparison-table th {
            background: var(--black);
            color: var(--white);
            padding: 15px;
            text-align: left;
            font-weight: 700;
        }

        .comparison-table td {
            padding: 15px;
            border-bottom: 1px solid var(--border);
        }

        .comparison-table tr:nth-child(even) td {
            background: var(--gray-light);
        }

        /* Two Column Layout */
        .two-col {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            margin-top: 40px;
        }

        .col-card {
            padding: 30px;
            background: var(--white);
            border-radius: 12px;
        }

        .col-card.problems {
            border-left: 4px solid #c00;
        }

        .col-card.solutions {
            border-left: 4px solid #0c0;
        }

        .col-card h3 {
            margin-bottom: 20px;
        }

        .col-card ul {
            list-style: none;
        }

        .col-card ul li {
            padding: 12px 0;
            border-bottom: 1px solid var(--border);
        }

        .col-card.problems ul li:before {
            content: "❌ ";
            margin-right: 10px;
        }

        .col-card.solutions ul li:before {
            content: "✅ ";
            margin-right: 10px;
        }

        /* Models Grid */
        .models-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
            margin-top: 40px;
        }

        .model-card {
            background: var(--white);
            border-radius: 16px;
            padding: 35px 30px;
            box-shadow: var(--shadow);
            transition: all 0.3s ease;
            border: 2px solid var(--gray-light);
        }

        .model-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-hover);
            border-color: var(--yellow);
        }

        .model-card.individual {
            grid-column: 1 / -1;
            display: grid;
            grid-template-columns: 1fr 2fr 1fr;
            gap: 30px;
            align-items: center;
            padding: 40px;
            background: linear-gradient(135deg, var(--yellow-light) 0%, var(--white) 100%);
        }

        .model-name {
            font-size: 26px;
            font-weight: 900;
            margin-bottom: 8px;
        }

        .model-size {
            color: var(--gray);
            margin-bottom: 20px;
            font-size: 15px;
        }

        .model-price {
            font-size: 36px;
            font-weight: 900;
            color: var(--yellow-dark);
            margin: 20px 0;
        }

        .model-features {
            list-style: none;
            margin: 25px 0;
        }

        .model-features li {
            padding: 10px 0;
            font-size: 15px;
            color: var(--gray);
        }

        /* Calculator */
        .calculator {
            background: var(--white);
            padding: 40px;
            border-radius: 20px;
            box-shadow: 0 10px 40px rgba(0,0,0,0.08);
            margin-top: 40px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }

        /* Progress Bar */
        .calc-progress {
            margin-bottom: 40px;
        }

        .progress-bar {
            width: 100%;
            height: 8px;
            background: var(--gray-light);
            border-radius: 10px;
            overflow: hidden;
            margin-bottom: 10px;
        }

        .progress-fill {
            height: 100%;
            background: linear-gradient(90deg, var(--yellow) 0%, var(--yellow-dark) 100%);
            width: 33.33%;
            transition: width 0.4s ease;
        }

        .progress-text {
            text-align: center;
            font-size: 14px;
            color: var(--gray);
            font-weight: 600;
        }

        /* Steps */
        .calc-step {
            display: none;
            animation: fadeIn 0.4s ease;
        }

        .calc-step.active {
            display: block;
        }

        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }

        .calc-step-content h3 {
            font-size: 24px;
            margin-bottom: 15px;
            text-align: center;
        }

        .calc-hint {
            text-align: center;
            color: var(--gray);
            font-size: 14px;
            margin-bottom: 30px;
        }

        /* Slider */
        input[type="range"] {
            width: 100%;
            height: 10px;
            background: var(--gray-light);
            border-radius: 5px;
            outline: none;
            -webkit-appearance: none;
            margin: 30px 0;
        }

        input[type="range"]::-webkit-slider-thumb {
            -webkit-appearance: none;
            appearance: none;
            width: 28px;
            height: 28px;
            background: var(--yellow);
            border-radius: 50%;
            cursor: pointer;
            box-shadow: 0 2px 8px rgba(255, 215, 0, 0.5);
            border: 3px solid var(--white);
        }

        input[type="range"]::-moz-range-thumb {
            width: 28px;
            height: 28px;
            background: var(--yellow);
            border-radius: 50%;
            cursor: pointer;
            box-shadow: 0 2px 8px rgba(255, 215, 0, 0.5);
            border: 3px solid var(--white);
        }

        .calc-value {
            font-size: 48px;
            font-weight: 900;
            color: var(--yellow-dark);
            margin: 20px 0 40px;
            text-align: center;
        }

        /* Options */
        .calc-options {
            display: grid;
            gap: 15px;
            margin-bottom: 20px;
        }

        .calc-option {
            background: var(--gray-light);
            border-radius: 12px;
            padding: 20px;
            cursor: pointer;
            transition: all 0.3s;
            border: 2px solid transparent;
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .calc-option:hover {
            background: var(--yellow-light);
            border-color: var(--yellow);
            transform: translateY(-2px);
        }

        .calc-option input[type="radio"] {
            width: 20px;
            height: 20px;
            cursor: pointer;
            flex-shrink: 0;
        }

        .calc-option input[type="radio"]:checked {
            accent-color: var(--yellow);
        }

        .calc-option.selected {
            background: var(--yellow-light);
            border-color: var(--yellow);
        }

        .option-content {
            flex: 1;
        }

        .option-content i {
            font-size: 24px;
            color: var(--yellow-dark);
            margin-right: 10px;
        }

        .option-content strong {
            display: block;
            font-size: 17px;
            margin-bottom: 5px;
        }

        .option-content span {
            display: block;
            font-size: 14px;
            color: var(--gray);
        }

        /* Results */
        .calc-results {
            padding-top: 20px;
        }

        .calc-results h3 {
            text-align: center;
            font-size: 28px;
            margin-bottom: 30px;
            color: var(--black);
        }

        .calc-comparison {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-bottom: 25px;
        }

        .calc-result-item {
            padding: 25px;
            background: var(--gray-light);
            border-radius: 16px;
            text-align: center;
            transition: transform 0.3s;
        }

        .calc-result-item:hover {
            transform: translateY(-5px);
        }

        .calc-result-item.with-tent {
            background: linear-gradient(135deg, #e8f5e9 0%, #c8e6c9 100%);
            border: 2px solid #4caf50;
        }

        .calc-result-item.without-tent {
            background: linear-gradient(135deg, #ffebee 0%, #ffcdd2 100%);
            border: 2px solid #f44336;
        }

        .calc-result-label {
            font-size: 14px;
            color: var(--gray);
            margin-bottom: 10px;
            font-weight: 600;
        }

        .calc-result-value {
            font-size: 28px;
            font-weight: 900;
            margin: 10px 0;
        }

        .calc-result-item.with-tent .calc-result-value {
            color: #2e7d32;
        }

        .calc-result-item.without-tent .calc-result-value {
            color: #c62828;
        }

        .calc-savings {
            background: linear-gradient(135deg, var(--yellow-light) 0%, var(--yellow) 100%);
            padding: 30px;
            border-radius: 16px;
            text-align: center;
            margin-top: 25px;
            box-shadow: 0 8px 24px rgba(255, 215, 0, 0.3);
        }

        .calc-savings .calc-result-label {
            font-size: 18px;
            color: var(--black);
            margin-bottom: 12px;
            font-weight: 900;
        }

        .calc-savings-value {
            font-size: 42px;
            font-weight: 900;
            color: var(--black);
            margin: 10px 0;
        }

        .calc-payback {
            margin-top: 20px;
            padding: 20px;
            background: var(--gray-light);
            border-radius: 12px;
            text-align: center;
        }

        .calc-payback .calc-result-label {
            color: var(--black);
            font-size: 15px;
        }

        .calc-payback .calc-result-value {
            color: var(--yellow-dark);
            font-size: 24px;
        }

        /* FAQ */
        .faq-list {
            margin-top: 40px;
        }

        .faq-item {
            background: var(--white);
            margin-bottom: 15px;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
        }

        .faq-question {
            padding: 20px 30px;
            font-weight: 700;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: background 0.2s;
        }

        .faq-question:hover {
            background: var(--gray-light);
        }

        .faq-answer {
            padding: 0 30px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
        }

        .faq-item.active .faq-answer {
            padding: 0 30px 20px 30px;
            max-height: 500px;
        }

        .faq-icon {
            font-size: 24px;
            transition: transform 0.3s;
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }

        /* Testimonials */
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin-top: 40px;
        }

        .testimonial-card {
            background: var(--white);
            padding: 30px;
            border-radius: 12px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.05);
        }

        .testimonial-header {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-bottom: 20px;
        }

        .testimonial-company {
            font-weight: 700;
            font-size: 18px;
        }

        .testimonial-author {
            color: var(--gray);
            font-size: 14px;
        }

        .testimonial-text {
            font-style: italic;
            line-height: 1.8;
        }

        /* Footer */
        footer {
            background: var(--black);
            color: var(--white);
            padding: 60px 0 30px;
        }

        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-column h3 {
            color: var(--yellow);
            margin-bottom: 20px;
        }

        .footer-column ul {
            list-style: none;
        }

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

        .footer-column a {
            color: var(--white);
            text-decoration: none;
            transition: color 0.2s;
        }

        .footer-column a:hover {
            color: var(--yellow);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 30px;
            text-align: center;
            color: var(--gray);
        }

        /* Responsive */
        @media (max-width: 768px) {
            h1 {
                font-size: 34px !important;
                letter-spacing: -0.8px;
            }

            h2 {
                font-size: 26px;
            }

            .top-bar {
                padding: 8px 0;
            }

            .top-bar-content {
                font-size: 11px;
                flex-direction: column;
                gap: 8px;
                text-align: center;
            }

            .header-content {
                padding: 15px 20px;
                gap: 20px;
            }

            .header-logos {
                justify-content: center;
                gap: 12px;
            }

            .logo-akst {
                height: 35px;
            }

            .logo-kronatek {
                height: 40px;
            }

            .logo-divider {
                font-size: 24px;
            }

            .header-contacts {
                text-align: center;
            }

            .header-phone {
                font-size: 20px;
            }

            .header-messengers {
                justify-content: center;
                flex-wrap: wrap;
            }

            .messenger-link {
                font-size: 12px;
                padding: 5px 12px;
            }

            .hero {
                padding: 40px 0 50px;
            }

            .hero-content {
                grid-template-columns: 1fr;
                gap: 30px;
                margin-bottom: 40px;
            }

            .hero-text h1 {
                font-size: 34px;
            }

            .hero-subtitle {
                font-size: 22px;
            }

            .hero-description {
                font-size: 16px;
            }

            .usp-grid {
                grid-template-columns: 1fr;
                gap: 15px;
            }

            .usp-card {
                padding: 20px;
            }

            .usp-card h3 {
                font-size: 15px;
                padding-right: 40px;
            }

            .badge {
                font-size: 12px;
                padding: 8px 15px;
                top: 15px;
                right: 15px;
            }

            .hero-image {
                order: -1;
            }

            .problem-grid,
            .two-col {
                grid-template-columns: 1fr;
            }

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

            .hero-cta {
                flex-direction: column;
                align-items: stretch;
            }

            .btn {
                width: 100%;
            }

            .btn-large {
                padding: 18px 30px;
                font-size: 17px;
            }

            .hero-phone-text {
                text-align: center;
            }

            /* Models Grid */
            .models-grid {
                grid-template-columns: 1fr;
            }

            .model-card.individual {
                grid-column: 1;
                grid-template-columns: 1fr;
                gap: 20px;
            }

            /* Calculator Mobile */
            .calculator {
                padding: 25px 20px;
                margin-top: 30px;
            }

            .calc-step-content h3 {
                font-size: 20px;
            }

            .calc-value {
                font-size: 40px;
            }

            .calc-options {
                gap: 12px;
            }

            .calc-option {
                padding: 15px;
            }

            .option-content strong {
                font-size: 15px;
            }

            .option-content span {
                font-size: 13px;
            }

            .option-content i {
                font-size: 20px;
            }

            .calc-comparison {
                grid-template-columns: 1fr;
                gap: 15px;
            }

            .calc-result-item {
                padding: 20px;
            }

            .calc-result-value {
                font-size: 24px;
            }

            .calc-savings {
                padding: 25px 20px;
            }

            .calc-savings .calc-result-label {
                font-size: 16px;
            }

            .calc-savings-value {
                font-size: 36px;
            }

            .calc-payback .calc-result-value {
                font-size: 20px;
            }

            section {
                padding: 40px 0;
            }
        }

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

        .animate-in {
            animation: fadeInUp 0.6s ease forwards;
        }