/* 全局样式 */
body {
    margin: 0;
    padding: 0;
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #0f0c29, #302b63, #24243e);
    color: #fff;
    line-height: 1.6;
}
h1, h2, h3, h4 {
    font-family: 'Orbitron', sans-serif;
    font-weight: bold;
    margin-top: 2rem;
}
p {
    font-size: 1rem;
    margin-bottom: 1.5rem;
}
a {
    color: #00ffff;
    text-decoration: none;
    transition: color 0.3s ease;
}
a:hover {
    color: #ff00ff;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}
header {
    background: linear-gradient(90deg, #000000, #2c3e50);
    padding: 20px 0;
    text-align: center;
    position: relative;
}
header h1 {
    font-size: 2.5rem;
    color: #00ffff;
    text-shadow: 0 0 10px #00ffff;
}
header p {
    font-size: 1.2rem;
    color: #dcdcdc;
}
.main-layer {
    z-index: 3;
    position: relative;
}
.card-layer {
    z-index: 2;
    position: relative;
    margin-top: 20px;
}
.bg-layer {
    z-index: 1;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('https://images.gptkong.com/demo/sample1.png'), url('https://images.gptkong.com/demo/sample2.png');
    background-repeat: no-repeat;
    background-position: center;
    opacity: 0.1;
}
.button {
    background-color: #00ffff;
    color: #000;
    padding: 10px 20px;
    border-radius: 5px;
    transition: all 0.3s ease;
    display: inline-block;
    margin-top: 10px;
}
.button:hover {
    background-color: #ff00ff;
    box-shadow: 0 0 10px #ff00ff;
}
code {
    background-color: #1e1e1e;
    color: #00ffff;
    padding: 5px;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
}
pre {
    background-color: #1e1e1e;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
}
table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}
th, td {
    border: 1px solid #444;
    padding: 10px;
    text-align: left;
}
th {
    background-color: #2c3e50;
    color: #fff;
}
img {
    max-width: 100%;
    height: auto;
    margin: 10px 0;
}
@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }
    p, li {
        font-size: 0.9rem;
    }
}