:root {
        --primary-color: #e44d26; /* A vibrant red-orange for energy */
        --secondary-color: #333; /* Dark for text */
        --accent-color: #f7b731; /* Gold for highlights */
        --background-light: #f5f5f5;
        --background-dark: #222;
        --text-light: #fff;
        --text-dark: #333;
        --border-color: #ddd;
        --spacing-unit: 1rem;
    }

    /* Base styles for the page */
    .page-13-wi {
        font-family: 'Arial', sans-serif;
        line-height: 1.6;
        color: var(--text-dark);
        background-color: var(--background-light);
        padding-top: 10px; /* Decorative top padding as body should handle header offset */
    }

    .page-13-wi__section {
        padding: calc(var(--spacing-unit) * 3) var(--spacing-unit);
        margin: 0 auto;
        max-width: 1200px;
        box-sizing: border-box;
    }

    .page-13-wi__section--dark {
        background-color: var(--background-dark);
        color: var(--text-light);
    }

    .page-13-wi__heading {
        text-align: center;
        margin-bottom: calc(var(--spacing-unit) * 2);
        color: var(--primary-color);
        font-size: 2.5em;
    }

    .page-13-wi__heading--light {
        color: var(--accent-color);
    }

    .page-13-wi__subheading {
        text-align: center;
        margin-bottom: calc(var(--spacing-unit) * 2);
        color: var(--secondary-color);
        font-size: 1.8em;
    }

    .page-13-wi__subheading--light {
        color: var(--text-light);
    }

    .page-13-wi__text-center {
        text-align: center;
    }

    .page-13-wi__button {
        display: inline-block;
        background-color: var(--primary-color);
        color: var(--text-light);
        padding: 0.8rem 1.5rem;
        border-radius: 5px;
        text-decoration: none;
        font-weight: bold;
        transition: background-color 0.3s ease;
        border: none;
        cursor: pointer;
        font-size: 1em;
    }

    .page-13-wi__button:hover {
        background-color: #c94020; /* Darker primary */
    }

    .page-13-wi__button--secondary {
        background-color: var(--accent-color);
        color: var(--text-dark);
    }

    .page-13-wi__button--secondary:hover {
        background-color: #e6a82c; /* Darker accent */
    }

    /* Hero Section */
    .page-13-wi__hero-section {
        position: relative;
        background-color: var(--background-dark);
        color: var(--text-light);
        text-align: center;
        padding: calc(var(--spacing-unit) * 5) var(--spacing-unit);
        overflow: hidden;
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        min-height: 400px;
    }

    .page-13-wi__hero-background {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        object-fit: cover;
        opacity: 0.4;
        z-index: 0;
    }

    .page-13-wi__hero-content {
        position: relative;
        z-index: 1;
        max-width: 800px;
    }

    .page-13-wi__hero-title {
        font-size: 3.5em;
        margin-bottom: var(--spacing-unit);
        color: var(--accent-color);
        line-height: 1.2;
    }

    .page-13-wi__hero-description {
        font-size: 1.3em;
        margin-bottom: calc(var(--spacing-unit) * 2);
        color: var(--text-light);
    }

    .page-13-wi__hero-cta-group {
        display: flex;
        gap: var(--spacing-unit);
        justify-content: center;
        flex-wrap: wrap;
    }

    /* About Section */
    .page-13-wi__about-content {
        display: flex;
        flex-direction: column;
        gap: calc(var(--spacing-unit) * 2);
        align-items: center;
    }

    .page-13-wi__about-image {
        width: 100%;
        max-width: 600px;
        height: auto;
        border-radius: 10px;
        box-shadow: 0 4px 15px rgba(0,0,0,0.1);
        object-fit: cover;
    }

    .page-13-wi__about-text {
        max-width: 800px;
        text-align: justify;
    }

    /* Product Section */
    .page-13-wi__product-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: calc(var(--spacing-unit) * 2);
        margin-top: calc(var(--spacing-unit) * 2);
    }

    .page-13-wi__product-card {
        background-color: var(--text-light);
        border-radius: 10px;
        box-shadow: 0 4px 15px rgba(0,0,0,0.1);
        overflow: hidden;
        text-align: center;
        transition: transform 0.3s ease, box-shadow 0.3s ease;
        display: flex;
        flex-direction: column;
        box-sizing: border-box; /* Ensure padding/border included in width */
    }

    .page-13-wi__product-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 6px 20px rgba(0,0,0,0.15);
    }

    .page-13-wi__product-image-wrapper {
        width: 100%;
        max-width: 100%;
        overflow: hidden;
        box-sizing: border-box;
    }

    .page-13-wi__product-image {
        width: 100%;
        height: 200px; /* Fixed height for product images */
        object-fit: cover;
        display: block;
        max-width: 100%; /* Ensure responsiveness */
        height: auto; /* Maintain aspect ratio */
    }

    .page-13-wi__product-info {
        padding: var(--spacing-unit) calc(var(--spacing-unit) * 1.5);
        flex-grow: 1;
        display: flex;
        flex-direction: column;
        justify-content: space-between;
    }

    .page-13-wi__product-title {
        font-size: 1.4em;
        color: var(--primary-color);
        margin-bottom: 0.5rem;
    }

    .page-13-wi__product-description {
        font-size: 0.95em;
        color: var(--secondary-color);
        margin-bottom: var(--spacing-unit);
        flex-grow: 1;
    }

    /* Promotions Section */
    .page-13-wi__promo-card {
        background-color: var(--text-light);
        border-radius: 10px;
        box-shadow: 0 4px 15px rgba(0,0,0,0.1);
        padding: calc(var(--spacing-unit) * 2);
        text-align: center;
        max-width: 800px;
        margin: 0 auto;
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .page-13-wi__promo-image {
        max-width: 100%;
        height: auto;
        border-radius: 8px;
        margin-bottom: var(--spacing-unit);
        object-fit: cover;
        width: 100%; /* Ensure responsiveness */
        box-sizing: border-box;
    }

    .page-13-wi__promo-title {
        font-size: 2em;
        color: var(--primary-color);
        margin-bottom: 0.5rem;
    }

    .page-13-wi__promo-text {
        font-size: 1.1em;
        color: var(--secondary-color);
        margin-bottom: calc(var(--spacing-unit) * 1.5);
    }

    /* Why Choose Section */
    .page-13-wi__why-choose-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: calc(var(--spacing-unit) * 2);
    }

    .page-13-wi__why-choose-item {
        background-color: var(--text-light);
        border-radius: 10px;
        box-shadow: 0 4px 15px rgba(0,0,0,0.1);
        padding: calc(var(--spacing-unit) * 1.5);
        text-align: center;
        display: flex;
        flex-direction: column;
        align-items: center;
        box-sizing: border-box;
    }

    .page-13-wi__why-choose-icon-wrapper {
        width: 100%;
        max-width: 100%;
        overflow: hidden;
        box-sizing: border-box;
    }

    .page-13-wi__why-choose-icon {
        width: 200px; /* Minimum size, adjusted to fit design */
        height: 200px; /* Ensure square aspect for placeholder */
        object-fit: contain;
        margin-bottom: var(--spacing-unit);
        max-width: 100%; /* Responsive */
        height: auto; /* Maintain aspect ratio */
    }

    .page-13-wi__why-choose-title {
        font-size: 1.2em;
        color: var(--primary-color);
        margin-bottom: 0.5rem;
    }

    .page-13-wi__why-choose-description {
        font-size: 0.9em;
        color: var(--secondary-color);
    }

    /* FAQ Section */
    .page-13-wi__faq-container {
        max-width: 800px;
        margin: 0 auto;
    }

    .page-13-wi__faq-item {
        background-color: var(--text-light);
        border: 1px solid var(--border-color);
        border-radius: 8px;
        margin-bottom: var(--spacing-unit);
        overflow: hidden;
    }

    .page-13-wi__faq-question {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: var(--spacing-unit) calc(var(--spacing-unit) * 1.5);
        background-color: #f9f9f9;
        cursor: pointer;
        user-select: none;
        transition: background-color 0.3s ease;
    }

    .page-13-wi__faq-question:hover {
        background-color: #f0f0f0;
    }

    .page-13-wi__faq-question h3 {
        margin: 0;
        font-size: 1.1em;
        color: var(--primary-color);
        pointer-events: none; /* Prevent h3 from blocking click on parent */
    }

    .page-13-wi__faq-toggle {
        font-size: 1.5em;
        font-weight: bold;
        color: var(--primary-color);
        transition: transform 0.3s ease;
        pointer-events: none; /* Prevent span from blocking click on parent */
    }

    .page-13-wi__faq-item.active .page-13-wi__faq-toggle {
        transform: rotate(45deg); /* Change + to X or similar */
    }

    .page-13-wi__faq-answer {
        max-height: 0;
        overflow: hidden;
        padding: 0 calc(var(--spacing-unit) * 1.5);
        transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
        color: var(--secondary-color);
        opacity: 0;
    }

    .page-13-wi__faq-item.active .page-13-wi__faq-answer {
        max-height: 2000px !important; /* Sufficiently large */
        padding: var(--spacing-unit) calc(var(--spacing-unit) * 1.5) calc(var(--spacing-unit) * 1.5) !important;
        opacity: 1;
    }

    /* Call to Action Section */
    .page-13-wi__cta-section {
        text-align: center;
        background-color: var(--primary-color);
        color: var(--text-light);
        padding: calc(var(--spacing-unit) * 3) var(--spacing-unit);
        border-radius: 10px;
        max-width: 1000px;
        margin: calc(var(--spacing-unit) * 3) auto;
    }

    .page-13-wi__cta-title {
        font-size: 2.2em;
        margin-bottom: var(--spacing-unit);
        color: var(--text-light);
    }

    .page-13-wi__cta-description {
        font-size: 1.2em;
        margin-bottom: calc(var(--spacing-unit) * 2);
        color: var(--text-light);
    }

    .page-13-wi__cta-buttons {
        display: flex;
        gap: var(--spacing-unit);
        justify-content: center;
        flex-wrap: wrap;
    }

    .page-13-wi__cta-button {
        background-color: var(--accent-color);
        color: var(--text-dark);
    }

    .page-13-wi__cta-button:hover {
        background-color: #e6a82c;
    }

    /* Responsive adjustments */
    @media (max-width: 768px) {
        .page-13-wi__section {
            padding: calc(var(--spacing-unit) * 2) var(--spacing-unit);
        }

        .page-13-wi__hero-title {
            font-size: 2.5em;
        }

        .page-13-wi__hero-description {
            font-size: 1.1em;
        }

        .page-13-wi__heading {
            font-size: 2em;
        }

        .page-13-wi__subheading {
            font-size: 1.5em;
        }

        .page-13-wi__about-content {
            flex-direction: column;
            text-align: center;
        }

        .page-13-wi__product-grid,
        .page-13-wi__why-choose-grid {
            grid-template-columns: 1fr;
        }
        
        /* List items mobile responsiveness */
        .page-13-wi__product-card,
        .page-13-wi__why-choose-item {
            width: 100% !important;
            max-width: 100% !important;
            box-sizing: border-box !important;
            margin-left: 0 !important;
            margin-right: 0 !important;
            padding: var(--spacing-unit) !important; /* Adjust padding for smaller screens */
        }
        
        .page-13-wi__product-info,
        .page-13-wi__why-choose-description {
            word-wrap: break-word !important;
            overflow-wrap: break-word !important;
            word-break: break-word !important;
        }

        .page-13-wi__promo-card {
            padding: var(--spacing-unit);
        }

        .page-13-wi__promo-title {
            font-size: 1.8em;
        }

        .page-13-wi__promo-text {
            font-size: 1em;
        }

        .page-13-wi__faq-question {
            padding: var(--spacing-unit);
        }

        .page-13-wi__faq-question h3 {
            font-size: 1em;
        }

        .page-13-wi__faq-answer {
            padding: var(--spacing-unit) !important;
        }
        
        /* Image responsiveness */
        .page-13-wi__hero-background,
        .page-13-wi__about-image,
        .page-13-wi__product-image,
        .page-13-wi__promo-image,
        .page-13-wi__why-choose-icon {
            max-width: 100% !important;
            height: auto !important;
            box-sizing: border-box !important;
        }
        
        .page-13-wi__product-image-wrapper,
        .page-13-wi__why-choose-icon-wrapper {
            width: 100% !important;
            max-width: 100% !important;
            overflow: hidden !important;
            box-sizing: border-box !important;
        }

        .page-13-wi__cta-title {
            font-size: 1.8em;
        }

        .page-13-wi__cta-description {
            font-size: 1em;
        }
        
        .page-13-wi__cta-buttons {
            flex-direction: column;
            gap: 0.8rem;
        }
    }