/* 基础样式与页面布局 */
body {
    font-family: 'Roboto', sans-serif;
    margin: 0;
    padding: 0;
    background: radial-gradient(circle, #1a237e, #000000);
    color: #ffffff;
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    color: #ff9800;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.card {
    background: linear-gradient(to bottom, #1e1e1e, #333333);
    border-radius: 12px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    padding: 20px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 15px rgba(255, 152, 0, 0.5);
}

img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
}

pre {
    background: #2c3e50;
    color: #ecf0f1;
    padding: 15px;
    border-radius: 8px;
    overflow-x: auto;
    font-size: 14px;
    line-height: 1.4;
}

code {
    font-family: 'Courier New', monospace;
    color: #ffcc00;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    background: #1e1e1e;
    border-radius: 8px;
    overflow: hidden;
}

th, td {
    padding: 12px 15px;
    text-align: left;
    border-bottom: 1px solid #444;
}

th {
    background: #ff9800;
    color: #000;
}

tr:hover {
    background: #333;
}

button {
    background: #ff9800;
    color: #000;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    transition: transform 0.2s ease, background 0.2s ease;
}

button:hover {
    background: #e68a00;
    transform: scale(1.05);
}

button:active {
    transform: scale(0.95);
}

@media (max-width: 768px) {
    .container {
        grid-template-columns: 1fr;
    }

    pre {
        font-size: 12px;
    }
}

@media (max-width: 480px) {
    body {
        padding: 10px;
    }

    .card {
        padding: 15px;
    }
}