/* 全局样式 */
body {
    font-family: 'Roboto', sans-serif;
    color: #ffffff;
    background: linear-gradient(135deg, #000033, #000000);
    margin: 0;
    padding: 0;
    line-height: 1.6;
}
h1, h2, h3, h4, h5, h6 {
    font-weight: bold;
    text-shadow: 2px 2px 5px rgba(0, 0, 0, 0.5);
}
h1 {
    font-size: 3rem;
    color: #00ffcc;
    text-align: center;
    margin: 2rem 0;
}
h2 {
    font-size: 2.2rem;
    color: #7b68ee;
    margin: 1.5rem 0;
}
h3 {
    font-size: 1.8rem;
    color: #1e90ff;
    margin: 1rem 0;
}
p {
    font-size: 1rem;
    color: #cccccc;
    margin: 1rem 0;
}
code, pre {
    font-family: 'Consolas', monospace;
    background-color: rgba(0, 0, 0, 0.3);
    color: #00ffcc;
    padding: 0.5rem;
    border-radius: 5px;
}
pre {
    overflow-x: auto;
    white-space: pre-wrap;
}
table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
}
th, td {
    border: 1px solid #333333;
    padding: 0.8rem;
    text-align: left;
}
th {
    background-color: #1e90ff;
    color: #ffffff;
}
td {
    color: #cccccc;
}
img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    margin: 1rem 0;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
}
.section {
    padding: 3rem 0;
    position: relative;
}
.section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5));
    z-index: -1;
}
.parallax {
    perspective: 1px;
    height: 100vh;
    overflow-x: hidden;
    overflow-y: auto;
}
.parallax__layer {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
}
.parallax__layer--back {
    transform: translateZ(-1px) scale(2);
    background-image: url('https://images.gptkong.com/demo/sample1.png');
    background-size: cover;
}
.parallax__layer--front {
    transform: translateZ(0);
    background-color: rgba(0, 0, 0, 0.5);
}
.button {
    display: inline-block;
    padding: 0.8rem 1.5rem;
    background: linear-gradient(to right, #1e90ff, #7b68ee);
    color: #ffffff;
    border-radius: 25px;
    text-decoration: none;
    transition: all 0.3s ease;
}
.button:hover {
    box-shadow: 0 0 10px #00ffcc;
}
@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }
    h2 {
        font-size: 1.8rem;
    }
    p {
        font-size: 0.9rem;
    }
    .section {
        padding: 2rem 0;
    }
}