/* 全局样式 */
body {
    font-family: 'Roboto', sans-serif;
    background: linear-gradient(135deg, #001f3f, #2e7d32);
    color: #fff;
    margin: 0;
    padding: 0;
    line-height: 1.6;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}
h1, h2, h3 {
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.5);
}
h1 {
    font-size: 2.5em;
    text-align: center;
    margin-bottom: 20px;
}
img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
}
code {
    display: block;
    background: rgba(0, 0, 0, 0.5);
    color: #fff;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
}
pre {
    margin: 15px 0;
}
button {
    background: rgba(0, 128, 255, 0.8);
    border: none;
    padding: 10px 20px;
    color: white;
    border-radius: 5px;
    transition: all 0.3s ease;
    cursor: pointer;
}
button:hover {
    background: rgba(0, 128, 255, 1);
    transform: scale(1.1);
}
.card {
    background: rgba(255, 255, 255, 0.9);
    color: #333;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    padding: 20px;
    margin-bottom: 20px;
}
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}
@media (max-width: 768px) {
    .grid {
        grid-template-columns: 1fr;
    }
}
table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}
th, td {
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: 10px;
    text-align: left;
}
th {
    background: rgba(0, 0, 0, 0.3);
}
a {
    color: #ffeb3b;
    text-decoration: none;
    transition: color 0.3s ease;
}
a:hover {
    color: #fbc02d;
}