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(181deg, #40b59b, #15efbe);
    color: white;
    text-align: center;
    padding: 60px 20px;
    border-radius: 10px;
}

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

.zb-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;
}

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

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: #4a90e2;
    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: #50e3c2;
    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: #4a90e2;
    color: white;
    padding: 15px 30px;
    text-decoration: none;
    border-radius: 5px;
    font-size: 1.2em;
    transition: background 0.3s;
}

.cta a.android {
    background: #50e3c2;
}

.cta a:hover {
    background: #357abd;
}

.cta a.android:hover {
    background: #3bc9a7;
}

footer {
    text-align: center;
    padding: 20px;
    background: #333;
    color: white;
    border-radius: 10px;
}

footer a {
    color: #50e3c2;
    text-decoration: none;
    margin: 0 10px;
}

footer a:hover {
    text-decoration: underline;
}

/* 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;
}

#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;
}

@media (max-width: 768px) {
    header h1 {
        font-size: 2em;
    }

    header img.logo {
        width: 100px;
    }

    .content {
        padding: 20px;
    }

    .cta {
        flex-direction: column;
        gap: 10px;
    }

    .feature img.icon {
        width: 60px;
    }

    .modal-content img {
        max-width: 80%;
    }

    section h2 {
        font-size: 1.5em;
    }

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