body, html {
    margin: 0;
    padding: 0;
    font-family: 'Open Sans', sans-serif;
    color: #FFFFFF;
    background: linear-gradient(135deg, #0A192F, #172A45);
    overflow-x: hidden;
    line-height: 1.6;
}
header {
    position: relative;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    background: linear-gradient(135deg, #0A192F, #172A45), url('https://images.gptkong.com/demo/sample1.png');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}
header h1 {
    font-family: 'Poppins', sans-serif;
    font-size: 3rem;
    color: #64FFDA;
    text-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    animation: fadeIn 2s ease-in-out;
}
header p {
    font-size: 1.2rem;
    margin-top: 1rem;
    color: #C7D2FE;
    max-width: 800px;
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}
section {
    padding: 4rem 2rem;
    position: relative;
    overflow: hidden;
}
section:nth-child(even) {
    background: linear-gradient(135deg, #172A45, #0A192F);
}
section:nth-child(odd) {
    background: linear-gradient(135deg, #0A192F, #172A45);
}
section h2 {
    font-family: 'Poppins', sans-serif;
    font-size: 2.5rem;
    color: #64FFDA;
    margin-bottom: 1.5rem;
    text-align: center;
}
section p {
    font-size: 1rem;
    color: #C7D2FE;
    line-height: 1.8;
    margin-bottom: 2rem;
}
.parallax {
    height: 500px;
    background: url('https://images.gptkong.com/demo/sample2.png') no-repeat center center fixed;
    background-size: cover;
    position: relative;
    z-index: -1;
    margin-top: -100px;
    transform: scale(1.1);
}
.content-block {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}
.card {
    background: rgba(10, 25, 47, 0.8);
    border-radius: 10px;
    padding: 2rem;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}
.card img {
    width: 100%;
    border-radius: 10px;
    margin-bottom: 1rem;
}
pre {
    background: #0A192F;
    padding: 1.5rem;
    border-radius: 10px;
    overflow-x: auto;
    font-family: 'Roboto Mono', monospace;
    color: #64FFDA;
    font-size: 0.9rem;
    line-height: 1.5;
}
table {
    width: 100%;
    border-collapse: collapse;
    margin: 2rem 0;
    background: rgba(10, 25, 47, 0.8);
    border-radius: 10px;
    overflow: hidden;
}
table th, table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #2E3B55;
}
table th {
    background: #64FFDA;
    color: #0A192F;
    font-weight: bold;
}
table tr:nth-child(even) {
    background: #172A45;
}
.button {
    display: inline-block;
    padding: 0.8rem 1.5rem;
    background: #64FFDA;
    color: #0A192F;
    font-family: 'Poppins', sans-serif;
    font-size: 1rem;
    border-radius: 5px;
    text-decoration: none;
    transition: all 0.3s ease;
}
.button:hover {
    background: #00FFB8;
    transform: scale(1.1);
}
@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }
    section h2 {
        font-size: 2rem;
    }
    pre {
        font-size: 0.8rem;
    }
    .content-block {
        grid-template-columns: 1fr;
    }
}