/* 全局样式 */
body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    color: #fff;
    background: linear-gradient(135deg, #1A237E, #4A148C);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}
.container {
    max-width: 1440px;
    margin: 0 auto;
    padding: 20px;
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 20px;
}
header {
    grid-column: span 12;
    text-align: center;
    padding: 40px 0;
    background: linear-gradient(to right, #4A148C, #1A237E);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}
header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin: 0;
    color: #FF9800;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}
main {
    grid-column: span 12;
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 20px;
}
.card {
    grid-column: span 4;
    background: #f5f5f5;
    color: #333;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}
.card:hover {
    transform: translateY(-5px);
}
.card img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    margin-bottom: 10px;
}
.button {
    background: linear-gradient(to right, #4A148C, #1A237E);
    color: white;
    border: none;
    padding: 10px 20px;
    cursor: pointer;
    border-radius: 5px;
    transition: all 0.3s ease;
}
.button:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}
pre {
    background: #2c3e50;
    color: #ecf0f1;
    padding: 15px;
    border-radius: 5px;
    overflow-x: auto;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
}
code {
    color: #FF9800;
}
footer {
    grid-column: span 12;
    text-align: center;
    padding: 20px;
    background: #1A237E;
    color: #fff;
    font-size: 0.9rem;
}
@media (max-width: 768px) {
    .container {
        grid-template-columns: repeat(6, 1fr);
    }
    .card {
        grid-column: span 6;
    }
}
@media (max-width: 480px) {
    .container {
        grid-template-columns: repeat(1, 1fr);
    }
    .card {
        grid-column: span 1;
    }
    header h1 {
        font-size: 2rem;
    }
}