body {
    font-family: 'Roboto', sans-serif;
    margin: 0;
    padding: 0;
    background: linear-gradient(135deg, #0d1b2a, #162447);
    color: #ffffff;
    line-height: 1.6;
}
header {
    position: relative;
    height: 100vh;
    background: url("https://images.gptkong.com/demo/sample1.png") no-repeat center/cover;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}
header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(0, 255, 255, 0.2), transparent);
    animation: aurora-move 15s linear infinite;
    transform-origin: center;
}
@keyframes aurora-move {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}
header h1 {
    font-size: 4rem;
    font-weight: bold;
    text-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
    z-index: 1;
    text-align: center;
    color: #ffffff;
}
section {
    padding: 40px 20px;
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}
.card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    padding: 20px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 12px rgba(0, 0, 0, 0.2);
}
.card img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    margin-bottom: 10px;
}
pre {
    background: rgba(0, 0, 0, 0.3);
    padding: 15px;
    border-radius: 8px;
    overflow-x: auto;
    font-size: 0.9rem;
    color: #00ffcc;
}
table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 8px;
    overflow: hidden;
}
th, td {
    padding: 10px;
    text-align: left;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
th {
    background: rgba(0, 0, 0, 0.2);
    font-weight: bold;
}
footer {
    background: #0d1b2a;
    padding: 20px;
    text-align: center;
    color: #ffffff;
    font-size: 0.9rem;
}
@media (max-width: 768px) {
    header h1 {
        font-size: 2.5rem;
    }
    section {
        grid-template-columns: 1fr;
    }
}