* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    background-color: #f5f5f5;
}

header {
    background-color: #333;
    color: white;
    padding: 1rem;
    text-align: center;
}

nav {
    /* background-color: #444; */
    /* padding: 1rem; */
    /* float: left; */
}

nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    gap: 2rem;
}

nav a {
    color: white;
    text-decoration: none;
}

.container {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
    min-height: 80vh;
}

.main-content {
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

footer {
    background-color: #333;
    color: white;
    text-align: center;
    padding: 1rem;
    width: 100%;
}

.beian {
    font-size: 0.8em;
    color: #ccc;
}

/* 响应式设计 */
@media (max-width: 768px) {
    nav ul {
        flex-direction: column;
        text-align: center;
    }
}

.top-text {
    position: sticky;
    top: 0;
    left: 0;
}

.flex-content {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    margin: 0 auto;
    max-width: 1200px;
}

.logo-left img {
    width: 120px;
    vertical-align: middle;
    margin-right: 30px;
}

footer a {
    color: white;
}

.img-box {
    width: 100%;
    height: 100%;
    /* border-radius: 8px; */
    overflow: hidden;
}