/* 全局样式 */
body {
    font-family: 'Roboto', sans-serif;
    color: #ffffff; /* 冷白色文字 */
    background: linear-gradient(135deg, #1a1a2e, #2e2e46); /* 深蓝与黑色渐变背景 */
    margin: 0;
    padding: 0;
    line-height: 1.6;
    overflow-x: hidden;
}
h1, h2, h3, h4 {
    font-weight: bold;
    color: #00ff9f; /* 霓虹绿色点缀 */
    margin-top: 2rem;
    margin-bottom: 1rem;
}
p {
    font-size: 16px;
    color: #dcdcdc; /* 浅灰色辅助文字 */
    margin-bottom: 1.5rem;
}
code {
    background-color: rgba(0, 255, 159, 0.1);
    color: #00ff9f;
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Courier New', Courier, monospace;
    font-size: 14px;
}
pre {
    background-color: #2e2e46;
    padding: 15px;
    border-radius: 8px;
    overflow-x: auto;
    margin-bottom: 2rem;
}
button {
    background-color: #00ff9f;
    color: #1a1a2e;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
}
button:hover {
    background-color: #ffffff;
    color: #00ff9f;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}
.section {
    background-color: #2e2e46;
    padding: 20px;
    border-radius: 8px;
    text-align: center;
}
.image-box img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    margin-bottom: 10px;
}
@media (max-width: 768px) {
    .container {
        grid-template-columns: 1fr;
    }
    h1, h2, h3, h4 {
        font-size: 1.5rem;
    }
    p {
        font-size: 14px;
    }
}
.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
}
.network-node {
    width: 20px;
    height: 20px;
    background-color: #00ff9f;
    border-radius: 50%;
    display: inline-block;
    margin: 5px;
    box-shadow: 0 0 5px rgba(0, 255, 159, 0.5);
}