:root {
            --primary-color: #234a79;
            --primary-hover: #1f4d8c;
            --accent-color: #3976be;
            --light-bg: #f0f3fa;
            --text-dark: #334155;
            --text-muted: #64748b;
        }

        body {
            font-family: 'Manrope', 'Inter', sans-serif;
            color: var(--text-dark);
            background-color: #ffffff;
            overflow-x: hidden;
        }

        /* Навигация */
        .navbar-custom {
            background-color: #ffffff;
            padding: 15px 0;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
            position: relative;
        }
        .navbar-brand img {
            max-width: 210px;
            height: auto;
        }
        .nav-link-custom {
            color: var(--text-dark) !important;
            font-weight: 700;
            margin-right: 15px;
            font-size: 14px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            transition: color 0.2s;
        }
        .nav-link-custom:hover {
            color: var(--accent-color) !important;
        }

        /* Выпадающее меню "О нас" */
        .nav-item-dropdown {
            position: relative;
        }
        .simple-dropdown-menu {
            position: absolute;
            top: 100%;
            left: 0;
            min-width: 220px;
            background-color: #ffffff;
            border-radius: 12px;
            box-shadow: 0px 15px 35px rgba(0, 11, 48, 0.15);
            border: 1px solid rgba(0,0,0,0.06);
            padding: 10px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(10px);
            transition: all 0.2s ease;
            z-index: 1001;
        }
        .simple-dropdown-item {
            display: block;
            text-decoration: none;
            color: var(--text-dark);
            font-weight: 700;
            font-size: 13px;
            text-transform: uppercase;
            letter-spacing: 0.4px;
            padding: 10px 12px;
            border-radius: 10px;
            transition: background-color 0.2s, color 0.2s;
        }
        .simple-dropdown-item:hover {
            background-color: #f8fafc;
            color: var(--accent-color);
        }
        @media (min-width: 992px) {
            .nav-item-dropdown:hover .simple-dropdown-menu {
                opacity: 1;
                visibility: visible;
                transform: translateY(0);
            }
        }

        /* Мега-меню */
        @media (min-width: 992px) {
            .nav-item-mega {
                position: static !important;
            }
            .mega-menu {
                position: absolute;
                top: 100%;
                left: 50%;
                transform: translateX(-50%) translateY(15px);
                width: 100%;
                max-width: 1140px;
                background-color: #ffffff;
                border-radius: 16px;
                box-shadow: 0px 15px 35px rgba(0, 11, 48, 0.15);
                border: 1px solid rgba(0,0,0,0.05);
                padding: 30px;
                opacity: 0;
                visibility: hidden;
                transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
                z-index: 1000;
            }
            .nav-item-mega:hover .mega-menu {
                opacity: 1;
                visibility: visible;
                transform: translateX(-50%) translateY(0);
            }
        }

        .mega-menu-item {
            display: flex;
            align-items: flex-start;
            gap: 15px;
            text-decoration: none;
            color: inherit;
            padding: 8px;
            border-radius: 8px;
            transition: background-color 0.2s, transform 0.2s;
        }
        .mega-menu-item:hover {
            background-color: #f8fafc;
            transform: translateY(-2px);
        }
        .mega-menu-icon {
            width: 48px;
            height: 48px;
            object-fit: contain;
            flex-shrink: 0;
        }
        .mega-menu-title {
            font-size: 14px;
            font-weight: 700;
            color: #1f4d8c;
            margin: 0 0 4px 0;
            line-height: 1.3;
        }
        .mega-menu-item:hover .mega-menu-title {
            color: #0260e8;
        }
        .mega-menu-desc {
            font-size: 11px;
            color: #64748b;
            margin: 0;
            line-height: 1.4;
        }

        @media (max-width: 991px) {
            .simple-dropdown-menu {
                position: static;
                min-width: 0;
                border-radius: 8px;
                box-shadow: none;
                border: 0;
                padding: 8px 0 0 0;
                opacity: 1;
                visibility: visible;
                transform: none;
                display: none;
            }
            .nav-item-dropdown.active-mobile .simple-dropdown-menu {
                display: block;
            }
            .mega-menu {
                background-color: #f8fafc;
                border-radius: 8px;
                padding: 15px;
                margin-top: 10px;
                display: none;
            }
            .nav-item-mega.active-mobile .mega-menu {
                display: block;
            }
            .mega-menu-item {
                margin-bottom: 12px;
            }
        }

        /* Hero / О компании */
        .about-hero {
            background: linear-gradient(rgba(0,0,0,0.5), rgba(0,0,0,0.5)), url('https://static.tildacdn.one/tild6462-3236-4830-b862-353964323639/AYSU_background_bloc.jpg') no-repeat center center/cover;
            color: #ffffff;
            padding: 100px 0;
            text-align: left;
        }
        .about-hero-title {
            font-weight: 800;
            font-size: 2.2rem;
            color: #ffffff;
            margin-bottom: 25px;
            line-height: 1.3;
        }
        .about-hero-text {
            font-size: 1.05rem;
            line-height: 1.8;
            opacity: 0.95;
        }

        /* Карусель производства */
        .carousel-section {
            padding: 80px 0;
            background-color: #ffffff;
        }
        .carousel-inner img {
            border-radius: 16px;
            height: 500px;
            object-fit: cover;
        }

        /* Услуги */
        .services-section {
            background-color: #f5f7fa;
            padding: 80px 0;
        }
        .service-card {
            background: #ffffff;
            border-radius: 22px;
            padding: 35px 30px;
            box-shadow: 0 14px 40px rgba(9, 22, 53, 0.06);
            height: 100%;
            border: none;
        }
        .service-icon-box {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            background-color: #f0f4ff;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
        }
        .service-title {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--primary-hover);
            margin-bottom: 15px;
        }
        .service-list {
            list-style: none;
            padding-left: 0;
            font-size: 0.95rem;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .service-list li {
            margin-bottom: 8px;
            position: relative;
            padding-left: 15px;
        }
        .service-list li::before {
            content: "•";
            position: absolute;
            left: 0;
            color: var(--accent-color);
        }

        /* Как мы работаем */
        .work-step-section {
            padding: 80px 0;
            background-color: #ffffff;
        }
        .step-img-wrapper img {
            width: 150px;
            height: 150px;
            border-radius: 50%;
            border: 2px solid var(--primary-color);
            object-fit: cover;
            margin-bottom: 20px;
        }
        .step-title {
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--primary-hover);
            margin-bottom: 8px;
        }

        /* Сертификаты */
        .certs-section {
            padding: 80px 0;
            background-color: #ffffff;
        }
        .cert-card img {
            border-radius: 8px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.1);
            transition: transform 0.2s;
            cursor: pointer;
            width: 100%;
        }
        .cert-card img:hover {
            transform: scale(1.03);
        }

        /* Отзывы */
        .reviews-section {
            padding: 80px 0;
            background-color: var(--light-bg);
        }
        .review-card {
            background-color: #ffffff;
            border-radius: 12px;
            padding: 30px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.05);
            height: 100%;
        }
        .review-img {
            width: 70px;
            height: 70px;
            border-radius: 50%;
            object-fit: cover;
            margin-bottom: 15px;
        }
        .review-text {
            font-style: italic;
            font-size: 0.95rem;
            line-height: 1.6;
            color: var(--text-dark);
            margin-bottom: 20px;
        }
        .review-author {
            font-weight: 700;
            color: var(--primary-hover);
            margin-bottom: 2px;
            font-size: 0.95rem;
        }
        .review-company {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* FAQ */
        .faq-section {
            padding: 80px 0;
            background-color: #ffffff;
        }
        .accordion-button:not(.collapsed) {
            background-color: var(--light-bg);
            color: var(--primary-color);
        }

        /* Форма вопросов */
        .questions-form-section {
            background-color: var(--light-bg);
            padding: 80px 0;
        }
        .questions-form-box {
            background-color: #ffffff;
            border-radius: 12px;
            padding: 40px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.05);
            max-width: 650px;
            margin: 0 auto;
        }

        /* Виджет обратной связи */
        .floating-widget {
            position: fixed;
            right: 25px;
            bottom: 25px;
            z-index: 1000;
        }
        .widget-btn {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background-color: var(--primary-color);
            color: #ffffff;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 4px 15px rgba(0,0,0,0.25);
            transition: all 0.3s ease;
        }
        .widget-btn:hover {
            background-color: var(--accent-color);
            transform: scale(1.05);
        }
        .widget-menu {
            position: absolute;
            bottom: 75px;
            right: 0;
            display: none;
            flex-direction: column;
            gap: 10px;
        }
        .widget-menu.show {
            display: flex;
        }
        .widget-item {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            text-decoration: none;
            box-shadow: 0 4px 10px rgba(0,0,0,0.15);
        }