/* 页面整体背景渐变与动画 */
body {
    margin: 0;
    font-family: 'Helvetica', 'Roboto', sans-serif;
    background: radial-gradient(circle, rgb(135, 206, 235), transparent), linear-gradient(135deg, #87CEEB, #90EE90);
    color: #333;
    line-height: 1.6;
    animation: aurora-move 15s linear infinite;
}
@keyframes aurora-move {
    0% { background-position: 0% 50%; }
    100% { background-position: 100% 50%; }
}

/* 标题样式 */
h1, h2, h3, h4 {
    font-family: 'Arial', sans-serif;
    color: #2E8B57;
    text-align: center;
    margin-top: 30px;
}
h1 {
    font-size: 2.5rem;
    letter-spacing: 2px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

/* 模块化布局与卡片设计 */
.module {
    background: rgba(255, 255, 255, 0.9);
    margin: 20px auto;
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0 6px 10px rgba(0, 0, 0, 0.1);
    max-width: 1200px;
    transition: transform 0.3s ease;
}
.module:hover {
    transform: translateY(-5px);
}

/* 图片装饰样式 */
img {
    display: block;
    margin: 20px auto;
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

/* 表格样式 */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px auto;
    background: rgba(240, 255, 240, 0.8);
    border-radius: 10px;
    overflow: hidden;
}
th, td {
    padding: 10px 15px;
    text-align: left;
    border: 1px solid #ddd;
}
th {
    background-color: #90EE90;
    color: #fff;
    font-weight: bold;
}

/* 代码块样式 */
pre {
    background: #f4f4f4;
    padding: 15px;
    border-radius: 10px;
    overflow-x: auto;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    color: #333;
}
code {
    color: #D2691E;
    font-weight: bold;
}

/* 动画按钮效果 */
button {
    display: block;
    margin: 20px auto;
    padding: 10px 20px;
    background: #FFD700;
    color: #fff;
    border: none;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
}
button:hover {
    background: #FFA500;
    transform: scale(1.1);
}

/* 响应式媒体查询 */
@media (max-width: 768px) {
    h1 { font-size: 2rem; }
    .module { padding: 15px; }
    table { font-size: 0.9rem; }
    pre { font-size: 0.8rem; }
}
@media (max-width: 480px) {
    h1 { font-size: 1.8rem; }
    .module { margin: 10px auto; }
    table { font-size: 0.8rem; }
}