body {
    font-family: 'Poppins', sans-serif;
    background: linear-gradient(to bottom right, #c8e6c9, #e3f2fd);
    color: #333;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}
header {
    background: radial-gradient(circle, rgb(102, 187, 106), transparent);
    padding: 20px 0;
    text-align: center;
    position: relative;
    animation: gradient-move 15s infinite alternate;
}
@keyframes gradient-move {
    0% { background-position: 0% 50%; }
    100% { background-position: 100% 50%; }
}
header h1 {
    font-size: 2.5em;
    color: #fff;
    font-weight: bold;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}
.container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    padding: 20px;
    max-width: 1400px;
    margin: 0 auto;
}
.card {
    background: #fff;
    border-radius: 15px;
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease-in-out;
    overflow: hidden;
    position: relative;
}
.card:hover {
    transform: translateY(-10px);
}
.card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}
.card-content {
    padding: 20px;
}
.card-title {
    font-size: 1.5em;
    color: #4caf50;
    margin-bottom: 10px;
}
pre {
    background: #f5f5f5;
    padding: 15px;
    border-radius: 8px;
    overflow-x: auto;
}
code {
    color: #d63384;
    font-family: 'Courier New', Courier, monospace;
}
table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    background: #fff;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}
th, td {
    padding: 15px;
    text-align: left;
    border-bottom: 1px solid #ddd;
}
th {
    background: #e8f5e9;
    color: #2e7d32;
}
.icon {
    display: inline-block;
    width: 50px;
    height: 50px;
    background: url('https://images.gptkong.com/demo/sample1.png') no-repeat center/cover;
    border-radius: 50%;
    margin-right: 10px;
}
button {
    background: #ffab40;
    color: #fff;
    border: none;
    padding: 10px 20px;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
}
button:hover {
    background: #e69500;
    transform: scale(1.1);
}
@media (max-width: 768px) {
    header h1 { font-size: 2em; }
    .card img { height: 150px; }
    pre { font-size: 0.9em; }
}