body {
    margin: 0;
    font-family: 'Roboto', sans-serif;
    background: radial-gradient(circle, rgba(0, 128, 255, 0.9), rgba(0, 0, 0, 0.8));
    color: #ffffff;
    overflow-x: hidden;
    animation: aurora-move 15s linear infinite;
}
@keyframes aurora-move {
    0% { background-position: 0% 50%; }
    100% { background-position: 100% 50%; }
}
header {
    position: relative;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: white;
    overflow: hidden;
}
header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 200%;
    height: 200%;
    background: url('https://images.gptkong.com/demo/sample1.png') no-repeat center center/cover;
    transform-origin: top left;
    animation: rotate-bg 10s linear infinite;
}
@keyframes rotate-bg {
    from { transform: rotate(0deg); }
    to { transform: rotate(-360deg); }
}
header h1 {
    font-size: 4rem;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.7);
    z-index: 1;
}
.card-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
    padding: 20px;
}
.card {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(10px);
    padding: 20px;
    max-width: 300px;
    transition: transform 0.3s ease;
    color: #fff;
}
.card:hover {
    transform: translateY(-10px) scale(1.05);
}
.card img {
    width: 100%;
    border-radius: 10px;
    margin-bottom: 10px;
}
code, pre {
    background: rgba(0, 0, 0, 0.5);
    padding: 10px;
    border-radius: 5px;
    color: #00ff00;
    font-family: 'Courier New', Courier, monospace;
}
pre {
    overflow-x: auto;
    white-space: pre-wrap;
    word-wrap: break-word;
}
table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    overflow: hidden;
}
th, td {
    padding: 10px;
    text-align: left;
    border: 1px solid rgba(255, 255, 255, 0.3);
}
@media (max-width: 768px) {
    header h1 {
        font-size: 2.5rem;
    }
    .card {
        max-width: 100%;
    }
}
footer {
    text-align: center;
    padding: 10px;
    background: rgba(0, 0, 0, 0.5);
    color: #ccc;
    font-size: 0.8rem;
}