/* --- H-Lift Industrial Theme Variables --- */
    :root {
        --primary-color: #003366; /* Deep Navy Blue */
        --accent-color: #f39c12;  /* Safety Orange */
        --bg-light: #f4f7f6;
        --border-color: #e0e0e0;
        --text-dark: #333333;
        --text-light: #555555;
    }

    body {
        font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
        color: var(--text-dark);
        line-height: 1.6;
        margin: 0;
        padding: 20px;
        background-color: #ffffff;
        font-size: 16px; /* Standardized 16px font */
    }

    .container {
        max-width: 1200px;
        margin: 0 auto;
    }

    /* --- Page Header --- */
    .page-header {
        border-bottom: 4px solid var(--primary-color);
        padding-bottom: 20px;
        margin-bottom: 40px;
        text-align: center;
    }

    .page-header h1 {
        color: var(--primary-color);
        font-size: 32px;
        margin: 0 0 10px 0;
        font-family: 'Cambria', serif;
    }

    .sub-header {
        color: var(--text-light);
        font-weight: 600;
        font-size: 18px;
    }

    /* --- Intro Text --- */
    .intro-text {
        margin-bottom: 30px;
        text-align: left;
    }

    /* --- Feature Grid (Advantages) --- */
    .feature-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 20px;
        margin-bottom: 40px;
    }

    .feature-card {
        background: #fff;
        border: 1px solid var(--border-color);
        padding: 20px;
        border-radius: 6px;
        border-top: 3px solid var(--primary-color);
    }

    .feature-title {
        font-weight: bold;
        color: var(--primary-color);
        font-size: 18px;
        margin-bottom: 10px;
        display: block;
    }

    /* --- Product Category List --- */
    .category-container {
        margin-top: 40px;
        margin-bottom: 40px;
        border: 1px solid #e0e0e0;
        border-radius: 8px;
        box-shadow: 0 4px 6px rgba(0,0,0,0.05);
        overflow: hidden;
    }

    .category-header {
        background-color: var(--primary-color);
        color: #ffffff;
        padding: 15px 20px;
        font-size: 18px;
        font-weight: bold;
        border-bottom: 3px solid var(--accent-color);
    }

    .category-list {
        list-style: none;
        padding: 0;
        margin: 0;
    }

    .category-list li {
        padding: 15px 20px;
        border-bottom: 1px solid #eee;
        display: flex;
        flex-direction: column;
    }

    .category-list li:last-child {
        border-bottom: none;
    }

    .category-list li:hover {
        background-color: #f9fbfd;
    }

    .cat-name {
        font-weight: bold;
        color: var(--primary-color);
        font-size: 17px;
    }

    .cat-desc {
        color: var(--text-light);
        font-size: 15px;
    }

    @media (min-width: 768px) {
        .category-list li {
            flex-direction: row;
            align-items: center;
        }
        .cat-name {
            width: 35%;
            padding-right: 20px;
        }
        .cat-desc {
            width: 65%;
        }
    }

    /* --- Why Choose Us Box --- */
    .why-box {
        background-color: #eef3f7;
        padding: 30px;
        border-radius: 8px;
        margin-top: 40px;
    }

    .why-box h3 {
        color: var(--primary-color);
        margin-top: 0;
        border-bottom: 2px solid #ccc;
        padding-bottom: 10px;
        margin-bottom: 20px;
    }

    .why-list li {
        margin-bottom: 10px;
    }

    /* --- Image Styling --- */
    .image-container {
        margin-top: 40px;
        text-align: center;
        border: 1px solid var(--border-color);
        padding: 10px;
        border-radius: 8px;
    }

    .image-container img {
        max-width: 100%;
        height: auto;
        display: block;
    }