body {
    font-family: Palatino, "Simsun", 宋体, serif;
    /* font-family: "EnglishFont", "ChineseFont", sans-serif; */
    margin: 0;
    padding: 0;
    color: #333;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    position: relative; /* 让子元素可以绝对定位 */
    z-index: 1;
}

body::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url("../image/bg.jpg");
    background-size: cover; 
    background-position: center;
    opacity: 0.6; 
    z-index: -1; 
}


.container {
    width: 1000px;
    background-color: rgba(255, 255, 255, 0.9);
    padding: 25px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    box-sizing: border-box;
    min-height: 90vh;
    /* max-height: 90vh; */
    border-radius: 10px;
}

header {
    background-color: #4CAF50;
    color: white;
    padding: 10px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
}

.header-img {
    width: 250px;
    height: 60px;
    border-radius: 0%;
    overflow: hidden;
}

.header-img img {
    width: 100%;
    height: auto;
}

.header-text {
    flex: 1;
    font-family: "Simsun", serif;
}

nav {
    display: flex;
}

.nav-button {
    font-size: 18px;
    box-shadow: none;
    background-color: white;
    color: #4CAF50;
}

.nav-button:hover {
    background-color: #c6e7c7;
}

footer {
    background-color: #6f6f6f;
    color: white;
    text-align: center;
    padding: 10px 0;
    border-radius: 0 0 8px 8px;
}

h2 {
    border-bottom: 2px solid #6f6f6f;
    padding-bottom: 5px;
    margin-bottom: 20px;
    font-size: 26px;
}

ul {
    list-style-type: none;
    padding: 0;
}

ul li {
    margin-bottom: 10px;
}

a {
    color: #4CAF50;
    text-decoration: none;
    transition: all 0.3s ease;
}

a:hover {
    color: #3b9140;
}

p {
    font-size: 18px;
}