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

body {
    font-family: "Microsoft YaHei", Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f9f9f9;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}
a{
    text-decoration: none;
    color:#333;
}
a:hover{
    color:#ff0000;
}
header {    
    color: white;
    padding: 20px 0;
    text-align: center;
    position: relative;
}

header h1 {
    font-size: 3em;
    letter-spacing: 1px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    color: #ff6c2a;
}

/* 导航栏样式 */
nav {
    background-color: #55433b;
    padding: 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
}

nav li {
    margin: 0;
}

nav a {
    display: block;
    color: #ecf0f1;
    text-decoration: none;
    padding: 16px 24px;
    font-size: 1.1em;
    transition: background 0.3s, color 0.3s;
}

nav a:hover {
    background-color: #e74c3c;
    color: white;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 30px auto;
    flex: 1;
}

section {
    background: white;
    padding: 30px;
    margin-bottom: 30px;
    line-height: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

section h2 {
    margin-bottom: 20px;
    color: #2c3e50;
    font-size: 1.8em;
}

section p {
    margin-bottom: 15px;
    font-size: 1.1em;
    text-indent:2em;
}

#news ul{
    list-style-type: disc;
    margin-left: 30px;
    color: #bebebe;
}

.research ul {
    padding-left: 20px;
    list-style-type: none;
}

.research li {
    margin-bottom: 10px;
    font-size: 1.1em;
}

footer {
    background: #55433b;
    color: white;
    text-align: center;
    padding: 20px 0;
    margin-top: auto;
}

/* 移动端适配 */
@media (max-width: 768px) {
    .container {
        width: 95%;
        padding: 0 10px;
    }

    header h1 {
        font-size: 1.8em;
    }

    nav ul {
        flex-direction: column;
        align-items: center;
    }

    nav a {
        padding: 12px 20px;
        width: 100%;
        text-align: center;
    }

    section {
        padding: 20px;
    }

    section h2 {
        font-size: 1.5em;
    }
}