:root {
            --primary-color: #003366;
            --secondary-color: #4b9cd3;
            --accent-color: #ff9900;
            --light-color: #f8f9fa;
            --dark-color: #1e2a3a;
            --success-color: #28a745;
            --warning-color: #ffc107;
            --danger-color: #dc3545;
            --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 5px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.12);
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            -webkit-tap-highlight-color: transparent;
        }
        
        body {
            font-family: 'Roboto', sans-serif;
            line-height: 1.5;
            color: #1e2a3a;
            background-color: #f4f7fc;
            scroll-behavior: smooth;
            overflow-x: hidden;
        }
        
        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        /* Header Styles - fully responsive */
        header {
            background: linear-gradient(135deg, var(--primary-color) 0%, #0a4c7a 100%);
            color: white;
            padding: 1rem 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-md);
            backdrop-filter: blur(2px);
        }
        
        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1rem;
        }
        
        .logo {
            display: flex;
            align-items: center;
            text-decoration: none;
            color: white;
            font-weight: 800;
            font-size: 1.4rem;
            letter-spacing: -0.3px;
        }
        
        .logo i {
            margin-right: 10px;
            font-size: 1.8rem;
            filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
        }
        
        .nav-toggle {
            display: none;
            background: rgba(255,255,255,0.15);
            border: none;
            color: white;
            font-size: 1.6rem;
            cursor: pointer;
            width: 48px;
            height: 48px;
            border-radius: 30px;
            transition: var(--transition);
        }
        
        .nav-toggle:active {
            transform: scale(0.94);
            background: rgba(255,255,255,0.3);
        }
        
        nav ul {
            display: flex;
            list-style: none;
            gap: 0.2rem;
            flex-wrap: wrap;
        }
        
        nav ul li {
            margin-left: 0;
        }
        
        .nav-link {
            color: white;
            text-decoration: none;
            font-weight: 500;
            transition: var(--transition);
            padding: 0.6rem 1rem;
            display: inline-block;
            border-radius: 40px;
            font-size: 1rem;
        }
        
        .nav-link:hover, .nav-link:focus {
            background: rgba(255,255,255,0.2);
            transform: translateY(-2px);
        }
        
        /* Hero Section */
        .hero {
            background: linear-gradient(105deg, rgba(0,51,102,0.92) 0%, rgba(0,80,120,0.88) 100%), url('https://placehold.co/1600x600/2c3e50/4b9cd3?text=Auto+Service') center/cover no-repeat;
            color: white;
            text-align: center;
            padding: 4rem 1rem;
            margin-bottom: 2rem;
            border-radius: 0 0 32px 32px;
        }
        
        .hero h1 {
            font-size: clamp(1.8rem, 6vw, 3rem);
            margin-bottom: 1rem;
            animation: fadeInDown 0.7s ease;
        }
        
        .hero p {
            font-size: clamp(1rem, 4vw, 1.3rem);
            max-width: 750px;
            margin: 0 auto;
            animation: fadeInUp 0.7s ease;
        }
        
        /* Breadcrumb */
        .breadcrumb {
            background: #ffffffcc;
            backdrop-filter: blur(4px);
            padding: 0.8rem 0;
            margin-bottom: 2rem;
            border-radius: 60px;
            margin-top: 0.5rem;
        }
        
        .breadcrumb ul {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 0.3rem;
        }
        
        .breadcrumb ul li {
            font-size: 0.85rem;
            display: inline-flex;
            align-items: center;
        }
        
        .breadcrumb ul li:after {
            content: '›';
            margin-left: 0.5rem;
            color: var(--primary-color);
            font-weight: bold;
        }
        
        .breadcrumb ul li:last-child:after {
            content: '';
        }
        
        /* Section titles */
        .section-title {
            text-align: center;
            margin-bottom: 2.5rem;
        }
        
        .section-title h2 {
            font-size: clamp(1.6rem, 5vw, 2.2rem);
            color: var(--primary-color);
            display: inline-block;
            position: relative;
            padding-bottom: 0.5rem;
        }
        
        .section-title h2:after {
            content: '';
            position: absolute;
            width: 70px;
            height: 3px;
            background: var(--accent-color);
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            border-radius: 3px;
        }
        
        .section-content {
            background: white;
            border-radius: 28px;
            box-shadow: var(--shadow-md);
            padding: 1.8rem;
            margin-bottom: 2rem;
            transition: var(--transition);
        }
        
        /* Filter buttons */
        .filter-container {
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem;
            justify-content: center;
            margin-bottom: 2rem;
        }
        
        .filter-btn {
            padding: 0.6rem 1.4rem;
            background: white;
            border: 1px solid var(--primary-color);
            color: var(--primary-color);
            border-radius: 60px;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
            font-size: 0.9rem;
        }
        
        .filter-btn:active {
            transform: scale(0.96);
        }
        
        .filter-btn.active, .filter-btn:hover {
            background: var(--primary-color);
            color: white;
            border-color: var(--primary-color);
            box-shadow: var(--shadow-sm);
        }
        
        /* Cards grid */
        .card-container {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 1.8rem;
            margin: 2rem 0;
        }
        
        .card {
            background: white;
            border-radius: 24px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }
        
        .card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-lg);
        }
        
        .card-header {
            background: var(--primary-color);
            color: white;
            padding: 1.2rem;
            text-align: center;
            font-size: 1.3rem;
            font-weight: 700;
        }
        
        .card-body {
            padding: 1.5rem;
        }
        
        .card-body ul {
            list-style: none;
        }
        
        .card-body li {
            margin-bottom: 0.7rem;
            display: flex;
            align-items: baseline;
            gap: 8px;
        }
        
        .card-body li i {
            color: var(--accent-color);
            width: 1.4rem;
            font-size: 1rem;
        }
        
        /* Таблица полностью адаптивная */
        .table-wrapper {
            width: 100%;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            margin: 1.5rem 0;
            border-radius: 20px;
            border: 1px solid #e9ecef;
            background: white;
            box-shadow: var(--shadow-sm);
        }
        
        .pit-table {
            width: 100%;
            min-width: 600px;
            border-collapse: collapse;
            font-size: 0.95rem;
        }
        
        .pit-table thead tr {
            background: #1e293b;
        }
        
        .pit-table th {
            color: #f8fafc;
            font-weight: 600;
            padding: 14px 12px;
            text-align: left;
            font-size: 0.9rem;
            white-space: nowrap;
        }
        
        .pit-table td {
            padding: 12px;
            border-bottom: 1px solid #eef2f6;
            color: #1f2937;
        }
        
        .pit-table tbody tr:hover td {
            background: #f1f5f9;
        }
        
        /* Адаптив для таблицы */
        @media (max-width: 680px) {
            .pit-table {
                min-width: 520px;
                font-size: 0.85rem;
            }
            .pit-table th, .pit-table td {
                padding: 10px 8px;
            }
        }
        
        /* Step / icon boxes */
        .steps {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            justify-content: center;
        }
        
        .step {
            flex: 1 1 220px;
            text-align: center;
            background: white;
            padding: 1.8rem 1rem;
            border-radius: 32px;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        
        .step-number {
            width: 56px;
            height: 56px;
            line-height: 56px;
            background: var(--primary-color);
            color: white;
            border-radius: 60px;
            margin: 0 auto 1rem;
            font-size: 1.6rem;
            font-weight: bold;
        }
        
        /* Accordion FAQ */
        .accordion-item {
            margin-bottom: 1rem;
            border-radius: 20px;
            overflow: hidden;
            background: white;
            box-shadow: var(--shadow-sm);
        }
        
        .accordion-header {
            background: var(--primary-color);
            color: white;
            padding: 1rem 1.5rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 500;
        }
        
        .accordion-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
            background: white;
        }
        
        .accordion-content-inner {
            padding: 1.2rem 1.5rem;
        }
        
        .accordion-item.active .accordion-content {
            max-height: 400px;
        }
        
        /* Footer */
        footer {
            background: #0f172a;
            color: #e2e8f0;
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }
        
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 2rem;
        }
        
        .social-links {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }
        
        .social-links a {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            background: #1e293b;
            border-radius: 60px;
            color: white;
            transition: var(--transition);
        }
        
        /* animations */
        @keyframes fadeInDown {
            from { opacity: 0; transform: translateY(-30px);}
            to { opacity: 1; transform: translateY(0);}
        }
        @keyframes fadeInUp {
            from { opacity: 0; transform: translateY(30px);}
            to { opacity: 1; transform: translateY(0);}
        }
        
        /* Мобильное меню */
        @media (max-width: 900px) {
            .nav-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }
            nav ul {
                position: fixed;
                flex-direction: column;
                background: #003366e6;
                backdrop-filter: blur(12px);
                width: 80%;
                max-width: 320px;
                height: 100vh;
                top: 70px;
                left: -100%;
                padding: 2rem 1.5rem;
                transition: left 0.3s ease;
                z-index: 1001;
                border-radius: 0 24px 24px 0;
                gap: 0.8rem;
                box-shadow: 5px 0 25px rgba(0,0,0,0.3);
            }
            nav ul.active {
                left: 0;
            }
            nav ul li {
                margin: 0.2rem 0;
                width: 100%;
            }
            .nav-link {
                display: block;
                padding: 12px 16px;
                border-radius: 50px;
                width: 100%;
            }
        }
        
        /* общие адаптивные правки */
        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
            .section-content {
                padding: 1.2rem;
            }
            .hero {
                padding: 2.5rem 1rem;
            }
            .filter-btn {
                padding: 0.5rem 1rem;
                font-size: 0.8rem;
            }
            .card-container {
                gap: 1rem;
            }
        }
        
        /* скрытие/показ таблицы volume */
        #volume .table-container {
            display: none;
            opacity: 0;
            transition: opacity 0.4s;
        }
        #volume .table-container.show {
            display: block;
            opacity: 1;
        }
        .show-models-container {
            text-align: center;
            margin: 1.5rem 0;
        }
        .show-models-btn {
            background: var(--accent-color);
            border: none;
            padding: 12px 28px;
            border-radius: 60px;
            font-weight: bold;
            color: #1e2a3a;
            font-size: 1rem;
            cursor: pointer;
            transition: all 0.2s;
            box-shadow: var(--shadow-sm);
        }
        .show-models-btn:active {
            transform: scale(0.96);
        }
        .note {
            background: #fff1e0;
            border-left: 6px solid var(--accent-color);
            padding: 14px 18px;
            border-radius: 20px;
            margin-top: 1.5rem;
            font-size: 0.85rem;
        }
        /* улучшение для тач-целей */
        button, .filter-btn, .nav-link, .accordion-header, .show-models-btn {
            cursor: pointer;
            touch-action: manipulation;
        }

  /* АССИСТЕНТ — ГЛАВНЫЙ БЛОК С ПОДСКАЗКОЙ ДЛЯ СКРОЛЛА (КИБЕРПАНК МИГАЮЩИЙ) */
        .dq200-scroll-assistant {
            background: #000000cc;
            backdrop-filter: blur(8px);
            border: 1px solid #0ff;
            border-radius: 60px;
            padding: 12px 18px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: center;
            gap: 1rem;
            margin-bottom: 2rem;
            font-weight: bold;
            text-transform: uppercase;
            letter-spacing: 2px;
            box-shadow: 0 0 12px rgba(0, 255, 255, 0.6), inset 0 0 4px rgba(255, 0, 255, 0.4);
            transition: all 0.3s;
            animation: borderPulse 1.8s infinite alternate;
        }

        /* неоновое мигание границы и тени */
        @keyframes borderPulse {
            0% {
                border-color: #0ff;
                box-shadow: 0 0 6px #0ff, inset 0 0 2px #f0f;
            }
            100% {
                border-color: #f0f;
                box-shadow: 0 0 20px #f0f, inset 0 0 8px #0ff;
            }
        }

        /* стили текста внутри ассистента */
        .dq200-scroll-assistant span {
            font-size: 1rem;
            font-weight: 800;
            background: linear-gradient(135deg, #0ff, #f0f);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-shadow: 0 0 6px rgba(0, 255, 255, 0.5);
            letter-spacing: 1.5px;
        }

        /* АНИМАЦИЯ СТРЕЛОК ⟷ ⟷ ⟷  (мигающий, дергающийся кибер-эффект) */
        .dq200-scroll-arrows-animation {
            font-size: 1.8rem;
            font-weight: 900;
            font-family: monospace;
            background: #000;
            padding: 0 12px;
            border-radius: 40px;
            display: inline-flex;
            gap: 12px;
            letter-spacing: 8px;
            color: #0ff;
            text-shadow: 0 0 5px #f0f;
            animation: glitchArrows 0.9s infinite steps(2), arrowMove 1.2s infinite alternate;
        }

        /* ГЛИТЧ-МОРГАНИЕ ДЛЯ СТРЕЛОК */
        @keyframes glitchArrows {
            0% {
                opacity: 1;
                text-shadow: 2px 0 #f0f, -2px 0 #0ff;
                transform: skewX(0deg);
            }
            50% {
                opacity: 0.8;
                text-shadow: -3px 0 #0ff, 3px 0 #f0f;
                transform: skewX(3deg);
            }
            100% {
                opacity: 1;
                text-shadow: 1px 0 #f0f, -1px 0 cyan;
                transform: skewX(-2deg);
            }
        }

        /* смещение влево-вправо */
        @keyframes arrowMove {
            0% {
                transform: translateX(-4px);
            }
            100% {
                transform: translateX(4px);
            }
        }

/* основной контейнер секции — карточки по центру */
        .cyber-section {
            max-width: 1400px;
            width: 100%;
            margin: 0 auto;
            position: relative;
        }

        /* КИБЕР-ЗАГОЛОВОК */
        .section-title {
            text-align: center;
            margin-bottom: 3rem;
            position: relative;
        }

        .section-title h2 {
            font-size: 2.8rem;
            font-weight: 800;
            letter-spacing: 4px;
            text-transform: uppercase;
            background: linear-gradient(135deg, #0ff, #f0f, #ff44cc);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-shadow: 0 0 8px rgba(0, 255, 255, 0.6);
            animation: glitchTitle 2s infinite alternate;
            display: inline-block;
            padding: 0 1rem;
        }

        @keyframes glitchTitle {
            0% {
                text-shadow: -2px 0 #0ff, 2px 0 #f0f;
                transform: skewX(0deg);
                opacity: 1;
            }
            95% {
                text-shadow: -1px 0 #0ff, 1px 0 #f0f;
                transform: skewX(0.5deg);
            }
            100% {
                text-shadow: 2px 0 #f0f, -2px 0 #0ff;
                transform: skewX(-1deg);
            }
        }

        .section-title p {
            font-size: 1.2rem;
            color: #b0f0ff;
            background: rgba(0, 0, 0, 0.6);
            backdrop-filter: blur(6px);
            display: inline-block;
            padding: 0.8rem 2rem;
            border-radius: 60px;
            letter-spacing: 1px;
            border: 1px solid rgba(0, 255, 255, 0.5);
            box-shadow: 0 0 12px rgba(0, 255, 255, 0.3);
            margin-top: 1rem;
        }

        /* КОНТЕЙНЕР КАРТОЧЕК — FLEX + ЦЕНТРОВАНИЕ */
        .card-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            align-items: stretch;
            gap: 2rem;
            margin: 2rem 0;
        }

        /* КАРТОЧКИ В КИБЕРПАНК СТИЛЕ */
        .card {
            flex: 1 1 300px;
            max-width: 360px;
            background: rgba(8, 12, 25, 0.75);
            backdrop-filter: blur(12px);
            border-radius: 2rem;
            overflow: hidden;
            transition: all 0.3s cubic-bezier(0.2, 0.9, 0.4, 1.1);
            border: 1px solid rgba(0, 255, 255, 0.6);
            box-shadow: 0 0 15px rgba(0, 255, 255, 0.3), inset 0 0 5px rgba(255, 0, 255, 0.2);
            position: relative;
            cursor: pointer;
        }

        /* Эффект глитч-рамки при наведении */
        .card::before {
            content: "";
            position: absolute;
            top: -2px;
            left: -2px;
            right: -2px;
            bottom: -2px;
            background: linear-gradient(45deg, #0ff, #f0f, #ff00aa, #0ff);
            border-radius: 2rem;
            z-index: -1;
            opacity: 0;
            transition: opacity 0.4s ease;
            filter: blur(6px);
        }

        .card:hover::before {
            opacity: 0.7;
        }

        .card:hover {
            transform: translateY(-10px) scale(1.02);
            border-color: #f0f;
            box-shadow: 0 0 35px rgba(255, 0, 255, 0.6), 0 0 20px rgba(0, 255, 255, 0.5);
        }

        /* Шапка карточки */
        .card-header {
            background: linear-gradient(135deg, #0a0f1f, #01040c);
            padding: 1.6rem 1rem;
            text-align: center;
            border-bottom: 2px solid #0ff;
            position: relative;
        }

        .card-header h3 {
            font-size: 1.6rem;
            font-weight: 800;
            text-transform: uppercase;
            letter-spacing: 2px;
            background: linear-gradient(135deg, #0ff, #ff99ff);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            text-shadow: 0 0 6px rgba(0, 255, 255, 0.5);
        }

        /* Тело карточки — список с кибер-иконками */
        .card-body {
            padding: 1.8rem 1.5rem;
        }

        .card-body ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .card-body li {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 1rem;
            font-size: 0.95rem;
            font-weight: 500;
            color: #c0e0ff;
            font-family: 'Share Tech Mono', monospace;
            border-bottom: 1px dashed rgba(0, 255, 255, 0.3);
            padding-bottom: 8px;
            transition: 0.2s;
        }

        .card-body li:hover {
            transform: translateX(6px);
            color: #ffffff;
            text-shadow: 0 0 4px #0ff;
            border-bottom-color: #f0f;
        }

        /* Стили иконок */
        .card-body li i {
            width: 28px;
            text-align: center;
            font-size: 1.2rem;
        }

        .fa-check {
            color: #0ff;
            text-shadow: 0 0 5px cyan;
        }

        .fa-times {
            color: #ff44cc;
            text-shadow: 0 0 5px #f0f;
        }

        /* Адаптивность: карточки всегда по центру */
        @media (max-width: 1050px) {
            .card-container {
                gap: 1.5rem;
            }
            .card {
                flex: 1 1 280px;
                max-width: 320px;
            }
        }

        @media (max-width: 768px) {
            body {
                padding: 1.2rem;
            }
            .section-title h2 {
                font-size: 1.8rem;
                letter-spacing: 2px;
            }
            .section-title p {
                font-size: 0.85rem;
                padding: 0.5rem 1.2rem;
            }
            .card-header h3 {
                font-size: 1.3rem;
            }
            .card-body li {
                font-size: 0.8rem;
                gap: 8px;
            }
            .card-body {
                padding: 1.2rem;
            }
            .card {
                border-radius: 1.5rem;
            }
        }

        @media (max-width: 480px) {
            .card-container {
                gap: 1rem;
            }
            .card {
                flex: 1 1 100%;
                max-width: 100%;
            }
            .card-header h3 {
                font-size: 1.2rem;
            }
            .section-title h2 {
                font-size: 1.4rem;
            }
        }

        /* Анимация появления при скролле (animate-on-scroll) */
        .animate-on-scroll {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.8s ease, transform 0.8s ease;
        }

        .animate-on-scroll.animated {
            opacity: 1;
            transform: translateY(0);
        }

        /* Кибер-декор — уголки */
        .cyber-section::before,
        .cyber-section::after {
            content: "";
            position: absolute;
            width: 70px;
            height: 70px;
            pointer-events: none;
            opacity: 0.6;
            z-index: 2;
        }

        .cyber-section::before {
            top: -15px;
            left: -15px;
            border-top: 4px solid #0ff;
            border-left: 4px solid #0ff;
            filter: drop-shadow(0 0 6px magenta);
        }

        .cyber-section::after {
            bottom: -15px;
            right: -15px;
            border-bottom: 4px solid #f0f;
            border-right: 4px solid #f0f;
            filter: drop-shadow(0 0 6px cyan);
        }

        /* для мобильных уголки чуть меньше */
        @media (max-width: 680px) {
            .cyber-section::before,
            .cyber-section::after {
                width: 40px;
                height: 40px;
            }
        }