body {
    margin: 0;
    font-family: 'Roboto Mono', monospace;
    background: linear-gradient(135deg, #0A192F 0%, #8A2BE2 100%);
    color: #fff;
    line-height: 1.6;
}
header {
    position: relative;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    overflow: hidden;
    background: url("https://images.gptkong.com/demo/sample1.png") no-repeat center/cover, linear-gradient(135deg, #0A192F 0%, #8A2BE2 100%);
}
header h1 {
    font-family: 'Orbitron', sans-serif;
    font-size: 4rem;
    color: #64FFDA;
    text-shadow: 0 0 10px rgba(100, 255, 218, 0.8);
    animation: breathe 2s infinite alternate;
}
@keyframes breathe {
    from { transform: scale(1); opacity: 1; }
    to { transform: scale(1.05); opacity: 0.9; }
}
header canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
}
nav {
    display: flex;
    justify-content: center;
    background: rgba(10, 25, 47, 0.8);
    padding: 1rem 0;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
}
nav a {
    color: #64FFDA;
    margin: 0 1rem;
    text-decoration: none;
    font-weight: bold;
    transition: color 0.3s ease;
}
nav a:hover {
    color: #8A2BE2;
}
.container {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
}
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}
.card {
    background: rgba(10, 25, 47, 0.6);
    border: 1px solid rgba(100, 255, 218, 0.2);
    border-radius: 10px;
    padding: 1rem;
    transition: all 0.3s ease;
    opacity: 0.8;
}
.card:hover {
    transform: scale(1.05);
    opacity: 1;
    box-shadow: 0 0 20px rgba(100, 255, 218, 0.5);
}
pre {
    background: rgba(10, 25, 47, 0.8);
    padding: 1rem;
    border-radius: 5px;
    overflow-x: auto;
}
code {
    color: #64FFDA;
    font-family: 'Roboto Mono', monospace;
    font-size: 0.9rem;
}
table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
}
th, td {
    border: 1px solid #64FFDA;
    padding: 0.5rem;
    text-align: left;
}
th {
    background: rgba(100, 255, 218, 0.2);
}
.button {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: #64FFDA;
    color: #0A192F;
    border-radius: 5px;
    transition: all 0.3s ease;
}
.button:hover {
    box-shadow: 0 0 10px #64FFDA;
    transform: scale(1.1);
}
@media (max-width: 768px) {
    header h1 { font-size: 2.5rem; }
    .grid { grid-template-columns: 1fr; }
    pre { font-size: 0.8rem; }
}
@media (min-width: 1024px) {
    .container { padding: 0 2rem; }
}