body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    padding: 0;
    background-color: #f5f5f5;
    color: #333;
}

header {
    background-color: #333;
    color: #fff;
    padding: 10px 20px;
    text-align: left;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    position: relative;
}

.site-stats {
    position: absolute;
    top: 10px;
    right: 20px;
    background-color: #333;
    color: #fff;
    padding: 5px 10px;
    border-radius: 5px;
    font-size: 0.9em;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.nav-menu {
    list-style: none;
    padding: 0;
    display: flex;
    justify-content: center;
    margin: 10px 0;
}

.nav-menu li {
    margin: 0 15px;
}

.nav-menu a {
    color: #fff;
    text-decoration: none;
    font-weight: bold;
    padding: 5px 10px;
    border-radius: 5px;
    transition: background-color 0.3s;
}

.nav-menu a:hover {
    background-color: #5a3a9e;
}

.introduction {
    background-color: #4a4a4a;
    color: #fff;
    padding: 20px;
    text-align: center;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.centered-heading {
    text-align: center;
    background-color: #7d5ace;
    padding: 50px;
    color: white;
    margin: 20px 0;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.three-column-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    padding: 20px;
    background-color: #fff;
    margin: 20px 0;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.three-column-list li {
    width: 31%;
    box-sizing: border-box;
    background-color: #f9f9f9;
    padding: 10px;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.three-column-list li a {
    color: #333;
    text-decoration: none;
    font-weight: bold;
}

.three-column-list li a:hover {
    text-decoration: underline;
}

.custom-divider {
    border: 1px solid #ddd;
    margin: 20px 0;
}

h2 {
    text-align: center;
    color: #7d5ace;
    margin-top: 40px;
}

h3 {
    color: #7d5ace;
    margin-top: 30px;
}

.content-section {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    padding: 20px;
    background-color: #fff;
    margin: 20px 0;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.content-section .text-content {
    flex: 2;
}

.content-section .image-content {
    flex: 1;
}

.content-section img {
    max-width: 100%;
    height: auto;
    display: block;
    border-radius: 5px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

p {
    text-align: justify;
    margin: 10px 0;
}

strong {
    display: block;
    margin: 15px 0 5px;
    color: #05010d;
}

a {
    color: #7d5ace;
    text-decoration: none;
    font-weight: bold;
}

a:hover {
    text-decoration: underline;
}

footer {
    text-align: center;
    background-color: #333;
    color: #fff;
    padding: 10px 0;
    position: relative;
    bottom: 0;
    width: 100%;
    box-shadow: 0 -2px 5px rgba(0, 0, 0, 0.1);
}

#back-to-top {
    position: fixed;
    right: 20px;
    bottom: 40px;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 50px;
    height: 80px;
    background-color: #7d5ace;
    color: white;
    border-radius: 10px;
    text-decoration: none;
    font-size: 16px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
    cursor: pointer;
    z-index: 1000;
    transition: background-color 0.3s;
}

#back-to-top:hover {
    background-color: #5a3a9e;
}

.tag-module {
    background-color: #f9f9f9;
    padding: 20px;
    margin: 20px 0;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.tag-module h3 {
    text-align: center;
    margin-bottom: 15px;
    color: #7d5ace;
}

.tag-list {
    list-style: none;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
}

.tag-list li {
    background-color: #eaeaea;
    padding: 5px 10px;
    border-radius: 5px;
    font-size: 0.9em;
    color: #333;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.tag-list li a {
    color: #333;
    text-decoration: none;
    font-weight: bold;
}

.tag-list li a:hover {
    color: white;
    background-color: #7d5ace;
    text-decoration: none;
}

.theme-colored-link {
    color: #7d5ace !important;
    padding: 5px 10px;
    border-radius: 5px;
    text-decoration: none;
    transition: color 0.3s;
    display: inline-block;
}

.theme-colored-link:hover {
    color: #5a3a9e !important;
    text-decoration: underline;
}
.sidebar {
    position: fixed;
    top: 50%; /* 垂直居中 */
    right: 0;
    transform: translateY(-50%);
    background: #8860e6;
    border: 1px solid #ddd;
    border-radius: 8px 0 0 8px;
    padding: 10px;
    width: 200px;
    box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

.sidebar h3 {
    margin: 0 0 10px;
    font-size: 16px;
    font-weight: bold;
    color: #191919;
}

.sidebar ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar ul li {
    margin-bottom: 5px;
}

.sidebar ul li a {
    display: block;
    padding: 5px;
    color: #ffffff;
    text-decoration: none;
    border-radius: 4px;
    transition: background-color 0.3s;
}

.sidebar ul li a:hover {
    background-color: #2d2d2d;
}
.friend-links {
    margin-top: 20px;
    text-align: center;
}

.friend-links h3 {
    font-size: 1.2em;
    margin-bottom: 10px;
}

.friend-links ul {
    list-style: none;
    padding: 0;
}

.friend-links li {
    display: inline;
    margin: 0 10px;
}

.friend-links a {
    color: #8860e6;
    text-decoration: none;
}

.friend-links a:hover {
    text-decoration: underline;
}