/* 基础样式 */
body {
    margin: 0;
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #000066, #330099);
    color: #ffffff;
    line-height: 1.6;
    overflow-x: hidden;
}
h1, h2, h3, h4 {
    font-weight: bold;
    text-shadow: 2px 2px 5px rgba(255, 255, 255, 0.7);
}
a {
    color: #00ccff;
    text-decoration: none;
}
a:hover {
    text-shadow: 0px 0px 10px #00ccff;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}
.module {
    background: linear-gradient(to bottom, #000066, #333399);
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0px 4px 8px rgba(0, 0, 0, 0.5);
    margin-bottom: 20px;
}
pre {
    background: rgba(255, 255, 255, 0.1);
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
}
code {
    font-family: 'Courier New', Courier, monospace;
    color: #00ccff;
}
table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}
th, td {
    padding: 10px;
    border: 1px solid #ffffff;
    text-align: center;
}
th {
    background: linear-gradient(to right, #000066, #330099);
}
td {
    background: rgba(255, 255, 255, 0.1);
}
.lock-icon {
    width: 100px;
    height: 100px;
    background-color: #ffffff;
    transform-style: preserve-3d;
    animation: rotate 5s infinite linear;
    margin: 20px auto;
}
@keyframes rotate {
    from { transform: rotateY(0deg); }
    to { transform: rotateY(360deg); }
}
.parallax {
    background-image: url('https://images.gptkong.com/demo/sample1.png');
    background-attachment: fixed;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    height: 400px;
    position: relative;
}
@media (max-width: 768px) {
    .parallax {
        height: 300px;
    }
}
.image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 10px;
    margin: 20px 0;
}
.image-grid img {
    width: 100%;
    height: auto;
    border-radius: 5px;
}
.note {
    text-align: center;
    font-size: 14px;
    color: #cccccc;
    margin-top: 20px;
}