/* 页面的基本样式 */
body {
    font-family: 'Raleway', sans-serif; /* 使用Raleway字体 */
    background-color: #f0f0f0;
    margin: 0;
    padding: 0;
}

header {
    background-color: #333;
    color: #fff;
    padding: 10px 20px;
    text-align: left; /* 标题左对齐 */
}
.container {
    width: 100%;
    margin: 0 auto;
}
nav {
    background-color: #444;
    text-align: center; /* 导航栏居中对齐 */
    padding: 10px 0;
}
nav a {
    color: #fff;
    text-decoration: none;
    margin: 0 15px;
    font-weight: 700; /* 设置字体粗细为700（Bold） */
    transition: color 0.3s ease; /* 添加过渡效果 */
}
nav a:hover {
    color: #88ccff; /* 鼠标悬停时的颜色 */
}

nav ul {
    list-style-type: none;
    padding: 0;
    text-align: center;
    margin: 0;
}
nav ul li {
    display: inline-block;
    margin-right: 10px;
}
nav ul li a {
    text-decoration: none;
    color: #fff;
    font-weight: bold;
    padding: 10px 15px;
    transition: all 0.3s ease;
}
nav ul li a:hover {
    /* background-color: #f2f2f2; */
    color: #88ccff;
    border-radius: 5px;
}

.dropdown-content {
    display: none;
    position: absolute;
    background-color: #fff;
    box-shadow: 0px 8px 16px rgba(0,0,0,0.1);
    z-index: 1;
}
.dropdown:hover .dropdown-content {
    display: block;
}
.dropdown-content a {
    width: auto;
    display: block;
    padding: 10px 15px;
    color: #333;
    text-decoration: none;
    transition: all 0.3s ease;
}
.dropdown-content a:hover {
    background-color: #f2f2f2;
    color: #88ccff;
    border-radius: 20px;
}

.modulecontainer {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}
.modulecontent {
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
    margin-top: 20px;
}

.modulebutton {
    display: inline-block;
    padding: 10px 20px;
    margin: 10px 0;
    background-color: #007BFF;
    color: #fff;
    text-decoration: none;
    border-radius: 5px;
    text-align: center;
}
.button:hover {
    background-color: #0056b3;
}
.grid-container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}
.grid-item {
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}
.grid-item h3 {
    margin-top: 0;
}

footer {
    background-color: #f0f0f0; /* 浅色背景 */
    color: #333; /* 深色文字 */
    text-align: center;
    padding: 10px 0;
    position: relative;
    bottom: 0;
    width: 100%;
}
footer p {
    margin: 0;
}
footer a {
    color: #333; /* 与文字颜色保持一致 */
    text-decoration: none;
    margin: 0 10px;
}