body, html {
    margin: 0;
    padding: 0;
    font-family: 'Open Sans', sans-serif;
    background: linear-gradient(135deg, #0A192F, #1E2B45);
    color: #FFFFFF;
    line-height: 1.6;
    overflow-x: hidden;
}

header {
    position: relative;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    background: url('https://images.gptkong.com/demo/sample1.png') no-repeat center center/cover;
    color: #FFFFFF;
}

header h1 {
    font-size: 4rem;
    font-weight: bold;
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.7);
    margin-bottom: 1rem;
}

header p {
    font-size: 1.5rem;
    margin-bottom: 2rem;
}

.cta-button {
    background-color: #FFC700;
    color: #0A192F;
    padding: 1rem 2rem;
    font-size: 1.2rem;
    border-radius: 50px;
    text-decoration: none;
    transition: all 0.3s ease;
}

.cta-button:hover {
    background-color: #64FFDA;
    transform: scale(1.1);
}

main {
    padding: 2rem;
}

section {
    margin-bottom: 4rem;
}

h2 {
    font-family: 'Roboto Mono', monospace;
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: #64FFDA;
}

p {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
}

pre {
    background-color: #1E2B45;
    padding: 1.5rem;
    border-radius: 10px;
    overflow-x: auto;
}

code {
    color: #FFC700;
    font-family: 'Roboto Mono', monospace;
}

ul, table {
    margin-bottom: 2rem;
}

.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.grid-item {
    background-color: #1E2B45;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.grid-item:hover {
    transform: translateY(-5px);
}

.grid-item img {
    width: 100%;
    border-radius: 10px;
    margin-bottom: 1rem;
}

.data-flow {
    width: 100px;
    height: 100px;
    border: 4px solid #64FFDA;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 2s linear infinite;
    margin: 2rem auto;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

@media (max-width: 768px) {
    header h1 {
        font-size: 2.5rem;
    }

    header p {
        font-size: 1rem;
    }

    h2 {
        font-size: 2rem;
    }

    pre {
        font-size: 0.9rem;
    }
}