body {
    margin: 0;
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #1a1a2e, #16213e, #0f3443);
    color: #ffffff;
    line-height: 1.6;
    overflow-x: hidden;
}

header {
    position: relative;
    height: 100vh;
    background: radial-gradient(circle, rgba(255, 87, 34, 0.5), transparent),
                url('https://images.gptkong.com/demo/sample1.png') no-repeat center/cover;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    overflow: hidden;
}

header h1 {
    font-family: 'Oswald', sans-serif;
    font-size: 3rem;
    color: #ffcc00;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8);
    animation: fadeIn 3s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-50px); }
    to { opacity: 1; transform: translateY(0); }
}

.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    padding: 20px;
}

.card {
    background: linear-gradient(135deg, #2c3e50, #34495e);
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2);
    padding: 20px;
    transition: transform 0.3s ease;
}

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

.card img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    object-fit: cover;
}

article {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

article h2 {
    font-family: 'Oswald', sans-serif;
    font-size: 2.5rem;
    color: #ff7e00;
    text-align: center;
    margin-bottom: 20px;
}

article h3 {
    font-family: 'Roboto', sans-serif;
    font-size: 1.8rem;
    color: #ffffff;
    margin-top: 30px;
    border-bottom: 2px solid #ffcc00;
    padding-bottom: 10px;
}

article pre {
    background: #2c3e50;
    color: #ffffff;
    padding: 15px;
    border-radius: 8px;
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    background: #34495e;
    border-radius: 8px;
    overflow: hidden;
}

table th, table td {
    padding: 10px;
    text-align: left;
    border: 1px solid #2c3e50;
}

table th {
    background: #ff7e00;
    color: #ffffff;
}

footer {
    background: linear-gradient(135deg, #1a1a2e, #16213e);
    color: #ffffff;
    text-align: center;
    padding: 15px;
    font-size: 0.9rem;
}

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

    article h2 {
        font-size: 2rem;
    }

    article h3 {
        font-size: 1.5rem;
    }

    .grid-container {
        grid-template-columns: 1fr;
    }
}