body {
            margin: 0;
            font-family: 'Arial', sans-serif;
            background-color: #f4f4f4;
            color: #333;
            line-height: 1.6;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px;
        }
        header {
          background:  linear-gradient(176deg, #d53232, #ff6767);
            color: white;
            text-align: center;
            padding: 60px 20px;
            border-radius: 10px;
        }
        header img.logo {
            width: 150px;
            margin-bottom: 20px;
            border-radius: 15px;
        }
        header h1 {
            font-size: 3em;
            margin: 0;
            text-transform: uppercase;
            letter-spacing: 2px;
        }
        header p {
            font-size: 1.2em;
            margin: 10px 0;
        }
        .content {
            background: white;
            padding: 40px;
            margin: 20px 0;
            border-radius: 10px;
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
        }
        .content h2 {
            color: #ff4d4d;
            font-size: 2em;
            margin-bottom: 20px;
        }
        .content p {
            font-size: 1.1em;
            margin-bottom: 20px;
        }
        .features {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
            margin: 20px 0;
        }
        .feature {
            background: #f9f9f9;
            padding: 20px;
            border-radius: 8px;
            text-align: center;
            cursor: pointer;
        }
        .feature img.icon {
            width: 80px;
            margin-bottom: 10px;
        }
        .feature h3 {
            color: #ff8c00;
            margin-bottom: 10px;
        }
        .modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.9);
            justify-content: center;
            align-items: center;
            z-index: 1000;
        }
        .modal-content {
            position: relative;
            text-align: center;
        }
        .modal-content img {
            max-width: 90%;
            max-height: 90vh;
            border-radius: 10px;
        }
        .close {
            position: absolute;
            top: 10px;
            right: 20px;
            color: white;
            font-size: 30px;
            cursor: pointer;
        }
        .nav-arrow {
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            color: white;
            font-size: 30px;
            cursor: pointer;
            background: rgba(0, 0, 0, 0.5);
            padding: 10px;
            border-radius: 50%;
        }
        .prev {
            left: 10px;
        }
        .next {
            right: 10px;
        }
        .video {
            text-align: center;
            margin: 40px 0;
        }
        .video iframe {
            max-width: 100%;
            border-radius: 8px;
        }
        .cta {
            text-align: center;
            margin: 40px 0;
            display: flex;
            justify-content: center;
            gap: 20px;
        }
        .cta a {
            background: #ff4d4d;
            color: white;
            padding: 15px 30px;
            text-decoration: none;
            border-radius: 5px;
            font-size: 1.2em;
            transition: background 0.3s;
        }
        .cta a.android {
            background: #3ddc84;
        }
        .cta a:hover {
            background: #e04343;
        }
        .cta a.android:hover {
            background: #35c175;
        }
        .articles {
            margin: 40px 0;
        }
        .articles h2 {
            color: #ff4d4d;
            font-size: 2em;
            margin-bottom: 20px;
        }
        .articles article {
            background: #f9f9f9;
            padding: 20px;
            border-radius: 8px;
            margin-bottom: 20px;
        }
        .articles article h3 {
            color: #ff8c00;
            margin-bottom: 10px;
        }
        .articles article p {
            font-size: 1em;
        }
        footer {
            text-align: center;
            padding: 20px;
            background: #333;
            color: white;
            border-radius: 10px;
        }
        footer a {
            color: #ff8c00;
            text-decoration: none;
            margin: 0 10px;
        }
        footer a:hover {
            text-decoration: underline;
        }

        #recommended-articles {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

#recommended-articles div {
    background: #f9f9f9;
    padding: 15px;
    border-radius: 8px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

#recommended-articles div:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.15);
}

#recommended-articles a {
    color: #4a90e2;
    font-size: 1.2em;
    font-weight: bold;
    text-decoration: none;
}

#recommended-articles a:hover {
    color: #4178c4;
    text-decoration: underline;
}

#recommended-articles p {
    font-size: 1em;
    color: #666;
    margin: 5px 0 0;
}

.st-articles-btn-container {
    text-align: center;
    margin-top: 16px;
}

.st-articles-btn {
    background-color: #4b5563;
    color: #ffffff;
    padding: 8px 20px;
    border-radius: 6px;
    text-decoration: none;
    display: inline-block;
    transition: background-color 0.2s ease;
}

.st-articles-btn:hover {
    background-color: #374151;
}

/* Articles Section */
section {
    background: white;
    padding: 25px;
    margin: 20px 0;
    border-radius: 8px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

section h2 {
    color: #4a90e2;
    font-size: 1.8em;
    margin-bottom: 15px;
    border-bottom: 2px solid #50e3c2;
    padding-bottom: 5px;
}

        @media (max-width: 768px) {


    section h2 {
        font-size: 1.5em;
    }

    
            header h1 {
                font-size: 2em;
            }
            header img.logo {
                width: 100px;
            }
            .content {
                padding: 20px;
            }
            .cta {
                flex-direction: column;
                gap: 10px;
            }
            .feature img.icon {
                width: 80px;
            }
            .modal-content img {
                max-width: 80%;
            }

             #recommended-articles a {
        font-size: 1.1em;
    }
        }

        .book-promo {
    background: linear-gradient(45deg, #edf2f7, #e2e8f0); /* Softer gradient for clean look */
    padding: 1.5rem;
    margin: 1.5rem 0;
    border-radius: 6px;
    text-align: center;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08); /* Subtle shadow for depth */
    border: 1px solid #e2e8f0; /* Light border to define section */
}

.book-promo h2 {
    color: #1a202c; /* Darker for contrast, matching site’s headers */
    font-size: 1.8rem;
    margin-bottom: 0.75rem;
    font-weight: 700;
}

.book-promo p {
    color: #4a5568; /* Consistent with site’s text */
    line-height: 1.5;
    margin-bottom: 0.75rem;
    font-size: 1rem;
}

.book-promo blockquote {
    font-style: italic;
    color: #2d3748; /* Slightly lighter for emphasis */
    border-left: 3px solid #718096; /* Slate border for quote */
    padding-left: 0.75rem;
    margin: 1rem 0;
    font-size: 0.95rem;
}

.book-promo .cta {
    margin-top: 1.5rem;
    display: flex;
    justify-content: center;
    gap: 1rem; /* Matches .features spacing */
}

.book-promo .book-cta {
    background: #e53e3e; /* Vibrant red-orange for buy CTA */
    color: #fff;
    padding: 0.6rem 1.2rem;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: background 0.2s ease, transform 0.1s ease;
}

.book-promo .book-cta:hover {
    background: #ff0000; /* Darker red on hover */
    transform: scale(1.05); /* Subtle zoom for interactivity */
}

.book-promo .learn-more-cta {
    background: #4a5568; /* Slate to match site’s palette */
    color: #fff;
    padding: 0.6rem 1.2rem;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: background 0.2s ease, transform 0.1s ease;
}

.book-promo .learn-more-cta:hover {
    background: #2d3748; /* Darker slate on hover */
    transform: scale(1.05);
}

@media (max-width: 640px) {
    .book-promo {
        padding: 1rem;
        margin: 1rem 0;
    }

    .book-promo h2 {
        font-size: 1.4rem;
    }

    .book-promo p,
    .book-promo blockquote {
        font-size: 0.9rem;
    }

    .book-promo .cta {
        flex-direction: column; /* Stack buttons on mobile */
        gap: 0.5rem;
    }

    .book-promo .book-cta,
    .book-promo .learn-more-cta {
        padding: 0.5rem 1rem;
        font-size: 0.85rem;
    }
}

@media (min-width: 768px) {
    .book-promo {
        padding: 2rem;
    }

    .book-promo h2 {
        font-size: 2rem;
    }
}