/* 全局样式 */
body {
    font-family: 'Open Sans', Arial, sans-serif;
    margin: 0;
    padding: 0;
    background: linear-gradient(135deg, #2C3E50, #0074D9);
    color: #FFFFFF;
    line-height: 1.6;
}
h1, h2, h3 {
    font-family: 'Roboto', Arial, sans-serif;
    font-weight: bold;
    color: #00FFB3;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}
p {
    font-size: 1rem;
    color: #D3D3D3;
}
a {
    color: #00FFB3;
    text-decoration: none;
    transition: color 0.3s ease;
}
a:hover {
    color: #FFFFFF;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}
.grid-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}
.grid-item {
    background-color: rgba(0, 116, 217, 0.8);
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.2);
}
.button {
    background-color: #0074D9;
    color: #FFFFFF;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}
.button:hover {
    background-color: #00FFB3;
}
code {
    background-color: rgba(0, 0, 0, 0.5);
    padding: 2px 5px;
    border-radius: 3px;
    font-family: 'Courier New', monospace;
    color: #00FFB3;
}
pre {
    background-color: rgba(0, 0, 0, 0.7);
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
}
table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}
th, td {
    padding: 10px;
    text-align: left;
    border: 1px solid #00FFB3;
}
th {
    background-color: #0074D9;
    color: #FFFFFF;
}
img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    margin: 10px 0;
}
@media (max-width: 768px) {
    .grid-container {
        grid-template-columns: 1fr;
    }
    h1 {
        font-size: 1.5rem;
    }
    h2 {
        font-size: 1.3rem;
    }
    p {
        font-size: 0.9rem;
    }
}