/* 基础样式与全局设置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body, html {
    width: 100%;
    height: 100%;
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    color: #ffffff;
    background: linear-gradient(135deg, #1a237e, #0d47a1);
    overflow-x: hidden;
    scroll-behavior: smooth;
}
h1, h2, h3, h4 {
    font-weight: bold;
    color: #29b6f6;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}
p, li, td, th {
    font-size: 16px;
    color: #e3f2fd;
}
a {
    color: #81d4fa;
    text-decoration: none;
    transition: color 0.3s ease;
}
a:hover {
    color: #4fc3f7;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}
.section {
    position: relative;
    padding: 40px 0;
    overflow: hidden;
}
.section:nth-child(even) {
    background: linear-gradient(135deg, #0d47a1, #1565c0);
}
.section:nth-child(odd) {
    background: linear-gradient(135deg, #1a237e, #1976d2);
}
.parallax {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 200%;
    background: url('https://images.gptkong.com/demo/sample1.png'), 
                url('https://images.gptkong.com/demo/sample2.png');
    background-size: cover;
    background-position: center;
    z-index: -1;
    transform: translateY(-50%);
    transition: transform 0.6s ease-out;
}
.content {
    position: relative;
    z-index: 1;
    text-align: center;
}
button {
    background-color: #29b6f6;
    color: white;
    border: none;
    padding: 10px 20px;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    border-radius: 5px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}
button:hover {
    background-color: #1565c0;
    transform: scale(1.1);
    box-shadow: 0 6px 10px rgba(0, 0, 0, 0.2);
}
img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 10px 0;
}
table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
}
th, td {
    padding: 10px;
    border: 1px solid rgba(255, 255, 255, 0.2);
    text-align: left;
}
th {
    background: rgba(255, 255, 255, 0.1);
    color: #bbdefb;
}
pre {
    background: rgba(255, 255, 255, 0.1);
    padding: 15px;
    border-radius: 8px;
    overflow-x: auto;
    font-size: 14px;
    color: #e3f2fd;
}
code {
    background: rgba(255, 255, 255, 0.1);
    padding: 2px 5px;
    border-radius: 4px;
    font-size: 14px;
}
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    h1, h2, h3, h4 {
        font-size: 20px;
    }
    p, li, td, th {
        font-size: 14px;
    }
    button {
        padding: 8px 16px;
        font-size: 14px;
    }
    pre {
        font-size: 12px;
    }
}