:root {
            --back: rgba(30, 29, 29, 1);
            --second-back: rgba(46, 46, 46, 1);
            --white: rgba(255, 255, 255, 1);
            --white-75: rgba(255, 255, 255, 0.75);
            --white-50: rgba(255, 255, 255, 0.5);
            --black: rgba(0, 0, 0, 1);
            --gray-light: rgba(203, 203, 203, 1);
            --gray-lighter: rgba(217, 217, 217, 1);
            --focused: rgba(223, 255, 0, 1);
            --accent: rgba(223, 255, 0, 0.1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            background: var(--back);
            color: var(--white);
            font-family: 'Montserrat', sans-serif;
            line-height: 1.6;
            overflow-x: hidden;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Typography */
        .title_block {
            color: var(--white);
            font-size: 42px;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 20px;
            text-align: center;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .second_block {
            color: var(--white);
            font-size: 18px;
            font-weight: 500;
            line-height: 1.6;
            text-align: center;
            margin-bottom: 40px;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
        }

        .regular {
            font-size: 16px;
            font-weight: 400;
            line-height: 1.6;
        }

        .bold {
            font-weight: 700;
        }

        .focused {
            color: var(--focused);
        }

        /* Header */
        .header_main {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 5%;
            background: var(--back);
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .logo-container {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .logo {
            height: 36px;
            width: auto;
        }

        .logo-text {
            font-size: 22px;
            font-weight: 800;
            color: var(--white);
            letter-spacing: 1px;
        }

        .nav-menu {
            display: flex;
            gap: 40px;
        }

        .nav-menu a {
            color: var(--white);
            text-decoration: none;
            font-weight: 500;
            font-size: 15px;
            transition: color 0.3s;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

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

        .contact_btn {
            display: inline-block;
            padding: 14px 28px;
            background: var(--focused);
            color: var(--black);
            font-weight: 700;
            text-decoration: none;
            cursor: pointer;
            transition: all 0.3s;
            border: none;
            text-align: center;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            font-size: 14px;
            border: 2px solid transparent;
        }

        .contact_btn:hover {
            background: transparent;
            color: var(--focused);
            border: 2px solid var(--focused);
        }

        .mobile-menu-toggle {
            display: none;
            flex-direction: column;
            cursor: pointer;
        }

        .mobile-menu-toggle span {
            width: 25px;
            height: 2px;
            background: var(--white);
            margin: 4px 0;
            transition: 0.3s;
        }

        /* Main Hero */
        .main_hero {
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('img/Ангар_003.png') no-repeat center center;
            background-size: cover;
            padding: 100px 20px 80px;
            text-align: center;
        }

        .hero-content {
            max-width: 900px;
        }

        .hero-title {
            font-size: 52px;
            font-weight: 800;
            margin-bottom: 15px;
            color: var(--white);
            text-transform: uppercase;
            letter-spacing: 2px;
        }

        .hero-subtitle {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 25px;
            color: var(--white);
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .hero-description {
            font-size: 18px;
            margin-bottom: 40px;
            color: var(--white-75);
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.7;
        }

        .hero-btn {
            font-size: 16px;
            padding: 16px 40px;
        }

        /* Why Section */
        .why-section {
            padding: 100px 0;
        }

        .why-info-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 30px;
        }

        .why_info_block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            padding: 40px;
            background: var(--second-back);
            border: 1px solid rgba(255, 255, 255, 0.05);
            transition: transform 0.3s;
        }

        .why_info_block:hover {
            transform: translateY(-5px);
            border-color: rgba(223, 255, 0, 0.2);
        }

        .why_info_block:nth-child(even) {
            grid-template-columns: 1fr 1fr;
            direction: rtl;
        }

        .why_info_block:nth-child(even) .why-content {
            direction: ltr;
        }

        .why-content {
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .why_info_block_title {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 20px;
            color: var(--white);
            text-transform: uppercase;
            letter-spacing: 1px;
            position: relative;
            padding-bottom: 10px;
        }

        .why_info_block_title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 50px;
            height: 3px;
            background: var(--focused);
        }

        .why_info_block:nth-child(even) .why_info_block_title::after {
            left: auto;
            right: 0;
        }

        .why-media {
            height: 300px;
            background: var(--back);
            display: flex;
            align-items: center;
            justify-content: center;
            border: 1px solid rgba(255, 255, 255, 0.05);
            position: relative;
            overflow: hidden;
        }

        .why-media::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(45deg, rgba(223, 255, 0, 0.05) 0%, transparent 50%);
            z-index: 1;
        }

        .media-placeholder {
            width: 100%;
            height: 100%;
            background: var(--back);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--white-50);
            font-weight: 600;
            font-size: 18px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        /* Quality Section */
        .quality-section {
            padding: 100px 0;
            background: var(--second-back);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .quality-list {
            max-width: 800px;
            margin: 0 auto 50px;
            list-style: none;
        }

        .quality-list li {
            margin-bottom: 20px;
            font-size: 18px;
            padding-left: 30px;
            position: relative;
        }

        .quality-list li::before {
            content: '→';
            position: absolute;
            left: 0;
            color: var(--focused);
            font-weight: 700;
        }

        .quality-image {
            max-width: 900px;
            margin: 0 auto;
            height: 400px;
            border: 1px solid rgba(255, 255, 255, 0.05);
        }

        /* Usability Section */
        .usability-section {
            padding: 100px 0;
        }

        .carousel-container {
    width: 100%;
    position: relative;
    margin: 50px 0;
}

.carousel {
    display: flex;
    overflow-x: auto;
    scroll-behavior: smooth;
    scrollbar-width: none;
    gap: 0;
    margin-bottom: 20px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.carousel::-webkit-scrollbar {
    display: none;
}

.carousel_card {
    flex: 0 0 33.333%;
    background: var(--second-back);
    padding: 30px;
    transition: all 0.3s;
    border-right: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    flex-direction: column;
    min-height: 600px;
}

.carousel_card:last-child {
    border-right: none;
}

.carousel_card:hover {
    background: rgba(46, 46, 46, 0.8);
}

.card-image {
    height: 200px;
    margin-bottom: 25px;
    background: var(--back);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255, 255, 255, 0.05);
    position: relative;
    overflow: hidden;
}

.card-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.3));
    z-index: 1;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: relative;
    z-index: 0;
}

.carousel_card_title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--white);
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    z-index: 2;
}

.carousel_card_description {
    font-size: 14px;
    line-height: 1.6;
    flex-grow: 1;
    position: relative;
    z-index: 2;
    color: rgba(255, 255, 255, 0.9);
}

.focused {
    color: #dfff00;
    font-weight: 600;
}

.carousel-controls {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 30px;
}

.carousel-btn {
    background: transparent;
    border: 2px solid #dfff00;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s;
    color: #dfff00;
    font-size: 18px;
    font-weight: bold;
}

.carousel-btn:hover {
    background: #dfff00;
    color: #000;
}

        .usability-cta {
            text-align: center;
            margin-top: 70px;
            padding: 50px;
            background: var(--second-back);
            border: 1px solid rgba(255, 255, 255, 0.05);
        }

        .usability-cta .title_block {
            font-size: 32px;
            margin-bottom: 25px;
        }

        .black {
            color: var(--black);
        }

        /* Work Section */
.work-section {
    padding: 100px 0;
    background: var(--second-back);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.work-map {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    margin: 60px 0;
    position: relative;
}

.work_card {
    text-align: center;
    padding: 40px 20px;
    position: relative;
    z-index: 1;
    border-right: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.work_card:last-child {
    border-right: none;
}

.work-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 25px;
    background: var(--back);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.icon-placeholder {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-placeholder img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    filter: brightness(0) invert(1);
}

.title_work_card {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--white);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.work_card_description {
    font-size: 14px;
    line-height: 1.5;
    max-width: 250px;
}

.work-conclusion {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    padding: 30px;
    background: var(--back);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

        /* Contact Form Section */
        .contact-form-section {
            padding: 100px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        .contact_form_back {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0;
            background: var(--second-back);
            border: 1px solid rgba(255, 255, 255, 0.05);
            margin-top: 50px;
        }

        .contact_section, .form {
            padding: 50px;
        }

        .contact_section {
            border-right: 1px solid rgba(255, 255, 255, 0.05);
        }

        .contact_section h3, .form h3 {
            font-size: 24px;
            margin-bottom: 15px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .contact-info {
            margin-top: 30px;
        }

        .contact-item {
            margin-bottom: 25px;
            padding-bottom: 15px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .contact-item:last-child {
            border-bottom: none;
        }

        .form-group {
            margin-bottom: 25px;
        }

        .form_input {
            display: flex;
            align-items: center;
            background: var(--back);
            padding: 15px;
            margin-top: 8px;
            border: 1px solid rgba(255, 255, 255, 0.05);
        }

        .input-icon {
            width: 20px;
            height: 20px;
            margin-right: 15px;
            
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--black);
            font-size: 12px;
            font-weight: 700;
        }

        .form_input input, .form_input textarea {
            flex: 1;
            background: transparent;
            border: none;
            color: var(--white);
            font-family: 'Montserrat', sans-serif;
            font-size: 16px;
            outline: none;
        }

        .form_input textarea {
            resize: vertical;
            min-height: 100px;
        }

        /* FAQ Section */
        .faq-section {
            padding: 100px 0;
            background: var(--second-back);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        .faq-container {
            max-width: 900px;
            margin: 0 auto;
            border: 1px solid rgba(255, 255, 255, 0.05);
        }

        .FAQ_element {
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .FAQ_element:last-child {
            border-bottom: none;
        }

        .faq-question {
            padding: 25px 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            background: var(--back);
            transition: background 0.3s;
        }

        .faq-question:hover {
            background: rgba(30, 29, 29, 0.8);
        }

        .second_title {
            font-size: 18px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .faq-toggle {
            font-size: 20px;
            font-weight: 300;
            transition: transform 0.3s;
            color: var(--focused);
        }

        .faq-answer {
            padding: 0 30px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s, padding 0.3s;
            background: var(--back);
        }

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

        .FAQ_element.active .faq-toggle {
            transform: rotate(45deg);
        }

        /* Footer */
        .footer {
            padding: 60px 0 30px;
            background: var(--back);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        .footer-content {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 40px;
        }

        .footer-logo {
            display: flex;
            flex-direction: column;
        }

        .footer-copyright {
            margin-top: 20px;
            font-size: 14px;
            color: var(--white-50);
        }

        .footer-contacts {
            display: flex;
            flex-direction: column;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            align-items: flex-end;
        }

        .footer-link {
            color: var(--white-50);
            text-decoration: none;
            transition: color 0.3s;
            font-size: 14px;
        }

        .footer-link:hover {
            color: var(--focused);
        }

        /* Modal */
        .modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.8);
            z-index: 2000;
            align-items: center;
            justify-content: center;
        }

        .modal-content {
            background: var(--second-back);
            padding: 50px;
            max-width: 500px;
            width: 90%;
            position: relative;
            border: 1px solid rgba(255, 255, 255, 0.05);
        }

        .close-modal {
            position: absolute;
            top: 20px;
            right: 20px;
            font-size: 24px;
            cursor: pointer;
            color: var(--white);
            width: 30px;
            height: 30px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--back);
        }

        /* Responsive Design */
        @media (max-width: 1024px) {
            .title_block {
                font-size: 36px;
            }
            
            .why_info_block {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            
            .why_info_block:nth-child(even) {
                grid-template-columns: 1fr;
                direction: ltr;
            }
            
            .work-map {
                grid-template-columns: repeat(2, 1fr);
            }
            
            .work_card:nth-child(2n) {
                border-right: none;
            }
            
            .work_card:nth-child(-n+2) {
                border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            }

            .carousel_card {
                flex: 0 0 50%;
            }
            
            .contact_form_back {
                grid-template-columns: 1fr;
            }
            
            .contact_section {
                border-right: none;
                border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            }
        }

        @media (max-width: 768px) {
            .header_main {
                padding: 12px 5%;
            }
            
            .nav-menu {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: var(--back);
                flex-direction: column;
                padding: 20px;
                border-top: 1px solid rgba(255, 255, 255, 0.05);
            }
            
            .nav-menu.active {
                display: flex;
            }
            
            .mobile-menu-toggle {
                display: flex;
            }
            
            .hero-title {
                font-size: 36px;
            }
            
            .hero-subtitle {
                font-size: 24px;
            }
            
            .title_block {
                font-size: 28px;
            }
            
            .work-map {
                grid-template-columns: 1fr;
            }

            .work-icon {
                width: 70px;
                height: 70px;
                margin-bottom: 20px;
            }
             .icon-placeholder {
                width: 35px;
                height: 35px;
            }

            .title_work_card {
                font-size: 16px;
            }
            
            .work_card_description {
                font-size: 13px;
            }

            .work_card {
                border-right: none;
                border-bottom: 1px solid rgba(255, 255, 255, 0.05);
                padding: 30px 15px;
            }
            
             .work_card:last-child {
                    border-bottom: none;
                }
            
            .carousel_card {
                flex: 0 0 100%;
            }
            
            .footer-content {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            
            .footer-links {
                align-items: flex-start;
            }
        }

        @media (max-width: 480px) {
            .container {
                padding: 0 15px;
            }
            
            .hero-title {
                font-size: 28px;
            }
            
            .hero-subtitle {
                font-size: 20px;
            }
            
            .title_block {
                font-size: 24px;
            }
            
            .second_block {
                font-size: 16px;
            }
            
            .contact_btn {
                padding: 12px 24px;
                font-size: 14px;
            }
            
            .why_info_block, .carousel_card, .contact_section, .form, .modal-content {
                padding: 25px;
            }
            
            .faq-question {
                padding: 20px;
            }
            
            .faq-answer {
                padding: 0 20px;
            }
            
            .FAQ_element.active .faq-answer {
                padding: 0 20px 20px;
            }
        }