:root {
            --dark-blue: #001a33;
            --accent-blue: #3498db;
            --turquoise: #40e0d0;
            --black: #0a0a0a;
            --dark-black: #000;
            --darker-black: #080808;
            --white: #f5f5f5;
            --light-gray: #a0a0a0;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
            --transition: all 0.3s ease;
        }

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

        body {
            font-family: 'Open Sans', sans-serif;
            background-color: var(--dark-black);
            color: var(--white);
            line-height: 1.6;
            min-height: 100vh;
        }

        /* Шапка сайта */
        header {
            background: linear-gradient(135deg, var(--dark-blue), var(--black));
            color: var(--white);
            padding: 2.5rem 1.5rem;
            text-align: center;
            box-shadow: var(--shadow);
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid rgba(52, 152, 219, 0.2);
        }

        header::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image:
                linear-gradient(rgba(52, 152, 219, 0.1) 1px, transparent 1px),
                linear-gradient(90deg, rgba(52, 152, 219, 0.1) 1px, transparent 1px);
            background-size: 20px 20px;
            pointer-events: none;
        }

        header h1 {
            font-family: 'Roboto', sans-serif;
            font-size: 3.5rem;
            font-weight: 700;
            letter-spacing: 1px;
            margin-bottom: 0.5rem;
            text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
            background: linear-gradient(to right, var(--accent-blue), var(--turquoise));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        header p {
            font-size: 1.4rem;
            font-weight: 300;
            color: var(--light-gray);
            max-width: 700px;
            margin: 0 auto;
        }

        /* Основное содержимое */
        main {
            max-width: 1200px;
            margin: 3rem auto;
            padding: 0 1.5rem;
        }

        .categories {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 2rem;
        }

        /* Карточка категории */
        .category-card {
            background: linear-gradient(145deg, #121212, #080808);
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            position: relative;
            transform: translateY(0);
            display: flex;
            flex-direction: column;
            height: 100%;
            border: 1px solid rgba(52, 152, 219, 0.1);
        }

        .category-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image:
                linear-gradient(rgba(52, 152, 219, 0.05) 1px, transparent 1px),
                linear-gradient(90deg, rgba(52, 152, 219, 0.05) 1px, transparent 1px);
            background-size: 25px 25px;
            pointer-events: none;
        }

        .category-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 12px 24px rgba(52, 152, 219, 0.2);
            border-color: rgba(52, 152, 219, 0.3);
        }

        .category-card:hover .category-image {
            transform: scale(1.05);
        }

        .category-image-container {
            height: 200px;
            overflow: hidden;
            position: relative;
        }

        .category-image {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
            filter: brightness(0.9);
        }

        .category-content {
            padding: 1.5rem;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }

        .category-content h3 {
            font-family: 'Roboto', sans-serif;
            color: var(--white);
            font-size: 1.5rem;
            margin-bottom: 1rem;
        }

        .category-link {
            display: inline-block;
            background: linear-gradient(135deg, var(--accent-blue), var(--turquoise));
            color: var(--white);
            padding: 0.8rem 1.8rem;
            border-radius: 30px;
            text-decoration: none;
            font-weight: bold;
            transition: var(--transition);
            text-align: center;
            margin-top: auto;
            position: relative;
            overflow: hidden;
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
            border: none;
            cursor: pointer;
            z-index: 1;
        }

        .category-link::before {
            content: "";
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
            transition: var(--transition);
            z-index: -1;
        }

        .category-link:hover {
            box-shadow: 0 6px 12px rgba(52, 152, 219, 0.4);
            transform: translateY(-3px);
        }

        .category-link:hover::before {
            left: 100%;
        }

        /* Адаптивность */
        @media (max-width: 1024px) {
            .categories {
                grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            }

            header h1 {
                font-size: 3rem;
            }
        }

        @media (max-width: 768px) {
            .categories {
                grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
                gap: 1.5rem;
            }

            header h1 {
                font-size: 2.5rem;
            }

            header p {
                font-size: 1.2rem;
            }
        }

/* Карточка категории */
.category-card {
    background: linear-gradient(145deg, #121212, #080808);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
    display: flex;
    flex-direction: column;
    height: 100%;
    min-height: 320px; /* фиксируем минимальную высоту */
    border: 1px solid rgba(52, 152, 219, 0.1);
}

/* Контент внутри карточки */
.category-content {
    padding: 1.2rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between; /* равномерное распределение */
}

/* Кнопка */
.category-link {
    display: inline-block;
    background: linear-gradient(135deg, var(--accent-blue), var(--turquoise));
    color: var(--white);
    padding: 0.6rem 1.4rem;
    border-radius: 25px;
    text-decoration: none;
    font-weight: bold;
    transition: var(--transition);
    text-align: center;
    margin-top: auto; /* прижимает кнопку вниз */
    font-size: 0.9rem;
}

/* На маленьких экранах — более компактные карточки */
@media (max-width: 480px) {
    .categories {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    .category-card {
        min-height: 260px; /* чуть меньше высота */
    }

    .category-link {
        padding: 0.5rem 1rem;
        font-size: 0.8rem;
        border-radius: 20px;
    }
}



        /* Заголовок категорий */
        .section-title {
            text-align: center;
            margin-bottom: 2.5rem;
            position: relative;
            font-size: 2.2rem;
            color: var(--white);
            font-weight: 300;
        }

        .section-title::after {
            content: "";
            display: block;
            width: 80px;
            height: 4px;
            background: linear-gradient(90deg, var(--accent-blue), var(--turquoise));
            margin: 0.8rem auto 0;
            border-radius: 2px;
        }

        /* Дополнительные элементы дизайна */
        .glow {
            position: fixed;
            width: 100%;
            height: 100%;
            top: 0;
            left: 0;
            pointer-events: none;
            z-index: -1;
        }

        .glow-1 {
            position: absolute;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(52, 152, 219, 0.15) 0%, transparent 70%);
            top: 20%;
            left: 10%;
            filter: blur(80px);
        }

        .glow-2 {
            position: absolute;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(64, 224, 208, 0.1) 0%, transparent 70%);
            bottom: 10%;
            right: 10%;
            filter: blur(60px);
        }