styles.css

/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Roboto', Arial, sans-serif;
}

body {
    font-family: serif, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f9f9f9;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

a {
    text-decoration: none;
    color: #0066cc;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

h1, h2, h3, h4, h5, h6 {
    margin-bottom: 0.5em;
    font-weight: 700;
    line-height: 1.2;
}

section {
    padding: 3rem 0;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    background-color: #000000;
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 4px;
    transition: background-color 0.3s ease;
}

.btn:hover {
    background-color: #3a3a3a;
}

.btn-small {
    display: inline-block;
    background-color: #030303;
    color: white;
    padding: 0.4rem 0.8rem;
    font-size: 0.9rem;
    border-radius: 4px;
    transition: background-color 0.3s ease;
    margin-right: 0.5rem;
}

.center-btn {
    width: 150px;
    display: block; /* 保持按钮为行内块元素 */
    margin: 0 auto; /* 水平居中 */
    text-align: center; /* 确保按钮内部文字居中 */
}

.btn-small:hover {
    background-color: #3b3b3b;
}

/* 导航栏 */
header {
    background-color: #f9f9f9;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 15px;
}

header h1 {
    margin: 0;
    font-size: 1.4rem;
    color: #000000;
    font-style: italic; /* 显示斜体 */
    font-weight: 300;
}

nav ul {
    display: flex;
}

nav ul li {
    margin-left: 2rem;
}

nav ul li a {
    color: #2e1818;
    font-weight: 500;
    transition: color 0.3s ease;
}

nav ul li a:hover, nav ul li a.active {
    color: #292941;
}

nav ul li a.active {
    border-bottom: 2px solid #000000;
}




/* 首页样式 */
.hero {
    background-color: #f9f9f9;
    padding: 10rem 0 6rem 0;
    text-align: center;
}

.hero h2 {
    font-size: 2.5rem;
    margin-bottom: 2.5rem;
    /* font-family: 'Italianno', cursive; */
    font-family: 'Playfair Display', serif;
    font-style: italic; /* 显示斜体 */
    font-weight: 300;
}

/* 修改这里，将 p 标签下边距从 2rem 改为 1rem */
.hero p {
    font-size: 1.05rem;
    max-width: 800px;
    margin: 0 auto 0; 
    font-family: serif, 'Times New Roman', Times, serif;
}

.hero .btn {
    margin-top: 20px;
    margin-bottom: 10px;
}


.hero img {
    margin-top: 100px;
    margin-bottom: 5px;
    border-radius: 30px; /* 圆角半径为 d% px */
}




/* 介绍成员 */
.members {
    background-color: #ffffff;
    margin: 0; 
    padding: 0;
    border: none;
}

.members iframe{
    margin: 0;
    padding: 0;
    border: none;
    display: block;
    width: 100%;
    height: 1140px;
}





.about {
    background-color: white;
}

.about-content {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
}

.about-text {
    flex: 1;
    min-width: 300px;
}

.about-image {
    flex: 1;
    min-width: 300px;
    text-align: center;
}

.about-image img {
    border-radius: 40px; /* 设置图片本身的圆角 */
    width: 100%; /* 确保图片适应容器 */
    height: auto;
}

.research-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.research-item {
    background-color: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.news-item {
    display: flex;
    margin-bottom: 1.5rem;
    background-color: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.news-date {
    background-color: #0066cc;
    color: white;
    padding: 1rem;
    display: flex;
    align-items: center;
    min-width: 120px;
    font-weight: 500;
    text-align: center;
}

.news-content {
    padding: 1rem 1.5rem;
}

.news a.btn {
    margin-top: 1rem;
}

/* 实验室成员页面样式 */
.page-header {
    background-color: #e9ecef;
    padding: 3rem 0;
    text-align: center;
}

.members-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.member-card {
    background-color: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.member-card:hover {
    transform: translateY(-5px);
}

.member-photo {
    height: 200px;
    overflow: hidden;
}

.member-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.member-info {
    padding: 1.5rem;
}

.member-title, .member-year {
    color: #666;
    margin-bottom: 0.5rem;
}

.member-desc {
    margin-bottom: 1rem;
}

.member-contact {
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.alumni-list {
    background-color: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.alumni-group {
    margin-bottom: 2rem;
}

.alumni-group h3 {
    border-bottom: 1px solid #dee2e6;
    padding-bottom: 0.5rem;
    margin-bottom: 1rem;
}

.alumni-group ul li {
    padding: 0.5rem 0;
    border-bottom: 1px dashed #eee;
}

/* 研究成果部分 */
.development {
    padding: 10rem 0;
}

.achievement-item {
    display: flex;
    align-items: center;
    margin-bottom: 2rem;
}

.achievement-item img {
    width: 40%;
    height: auto;
    /* margin-right: 2rem; */
    border-radius: 18px;
}

.achievement-item .achievement-content {
    width: 50%;
}

/* 偶数行反转布局 */
.achievement-item:nth-child(2n-1) {
    flex-direction: row-reverse;
}

/* Achievement 占位符 */
.achievement-placeholder {
    display: inline-block;
    /* width: 80px; */
    min-width: 15rem;
    height: 1px;
}

/* 设置 h2 样式 */
.development h2 {
    /* font-family: 'Playfair Display', serif; */
    font-family: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    font-size: 2.5rem;
    font-weight: 400;
    color: #333;
    text-align: center;
    margin-bottom: 1.5rem;
}

/* 设置 h3 样式 */
.development h3 {
    /* font-family: 'Roboto', sans-serif; */  
    font-family: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    font-size: 1.2rem;
    font-weight: 400;
    color: #333;
    margin-bottom: 4rem;
    text-align: center; /* 居中对齐 */
    padding-left: 12rem; 
    padding-right: 12rem;

}

.development h4 {
    /* font-family: 'Roboto', sans-serif; */  
    font-family: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    font-size: 1.8rem;
    font-weight: 400;
    color: #333;
    padding-left: 2rem;
    margin-bottom: 1rem;
    text-align: left; /* 左对齐 */
}

/* 设置 p 样式 */
.development p {
    /* font-family: 'Roboto', sans-serif; */
    font-family: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    font-size: 1.2rem;
    color: #333;
    margin-bottom: 1rem;
    text-align: left; /* 左对齐 */

    position: relative;
    padding-left: 2rem;
    text-indent: -0.8rem;
    line-height: 1.0rem;
    margin-right: 0rem;
    }

.development p::before {
        content: "✓";
        position: relative;
        left: -1rem;
        color: #888;
        font-size: 1.1em;
        line-height: 1.6;
    
}

/* 研究成果页面样式 */

.research-areas {
    background-color: #fff;
    /* 如果想跟其他 section 保持同样的上下内边距，可选： */
    padding: 10rem 0;
}
.research-areas h2 {
    font-family: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    font-size: 2.2rem;
    font-weight: 400;
    color: #222;
    margin-bottom: 1.5rem;
    text-align: center;
}

.research-areas h3 {
    font-family: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    font-size: 1.5rem;
    font-weight: 400;
    color: #222;
    margin-bottom: 1.5rem;
    text-align: center;
}

.research-areas p {
    font-family: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    font-size: 1.1rem;
    color: #444;
    margin-bottom: 1rem;
    /* text-align: center; */
    line-height: 1.7;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}
/* Quote Section */
.quote-section {
    background-color: #111; /* 黑色背景 */
    color: #fff; /* 白色文字 */
    padding: 8rem 0; /* 增加上下内边距为 6rem */
    text-align: center; /* 居中对齐 */
}

.quote-section blockquote {
    font-family: 'Playfair Display', serif; /* 使用优雅字体 */
    font-size: 1.5rem; /* 字体大小 */
    font-style: italic; /* 斜体 */
    line-height: 1.8; /* 行高 */
    margin: 0 auto 2rem; /* 居中并设置下边距 */
    max-width: 1000px; /* 增加最大宽度 */
    letter-spacing: 0.05em; /* 增加字母间距 */
}

.quote-section .quote-author {
    margin-top: 2rem; /* 上边距 */
}

.quote-section .quote-author img {
    width: 10%; /* 图标宽度，使用百分比 */
    height: auto; /* 图标高度，使用百分比 */
    margin-bottom: 1rem; /* 下边距 */
    border-radius: 50%;
    object-fit: cover;
}

.quote-section .quote-author h4 {
    font-size: 1.2rem; /* 作者名字字体大小 */
    margin-bottom: 0.5rem; /* 下边距 */
    font-weight: 700; /* 加粗 */
}

.quote-section .quote-author p {
    font-size: 1rem; /* 职位字体大小 */
    color: #aaa; /* 灰色文字 */
    margin: 0; /* 去掉默认外边距 */
}

/* Join Section */
.join-section {
    background-color: #f9f9f9; /* 浅灰色背景 */
    padding: 4rem 0; /* 上下内边距 */
    text-align: center; /* 居中对齐 */
    border-radius: 10px; /* 圆角 */
    margin: 10rem auto; /* 上下外边距 */
    max-width: 800px; /* 最大宽度 */
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1); /* 添加阴影 */
}

.join-section h2 {
    font-size: 2rem; /* 标题字体大小 */
    font-weight: 700; /* 加粗 */
    margin-bottom: 1rem; /* 下边距 */
    color: #000; /* 黑色文字 */
}

.join-section p {
    font-size: 1rem; /* 正文字体大小 */
    color: #555; /* 深灰色文字 */
    margin-bottom: 2rem; /* 下边距 */
}

.join-section .btn {
    display: inline-block;
    padding: 0.75rem 1.5rem; /* 按钮内边距 */
    background-color: #000; /* 黑色背景 */
    color: #fff; /* 白色文字 */
    text-decoration: none; /* 去掉下划线 */
    border-radius: 5px; /* 按钮圆角 */
    font-size: 1rem; /* 按钮字体大小 */
    transition: background-color 0.3s ease; /* 添加过渡效果 */
}

.join-section .btn:hover {
    background-color: #333; /* 鼠标悬停时背景变深 */
}
/* 页脚样式 */
footer {
    background-color: #212529;
    color: #adb5bd;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    margin-bottom: 2rem;
}

.contact-info, .quick-links {
    flex: 1;
    min-width: 250px;
}

footer h3 {
    color: white;
    margin-bottom: 1rem;
}

.quick-links ul li {
    margin-bottom: 0.5rem;
}

.quick-links ul li a {
    color: #adb5bd;
    transition: color 0.3s ease;
}

.quick-links ul li a:hover {
    color: white;
}

.copyright {
    text-align: center;
    padding-top: 1rem;
    border-top: 1px solid #343a40;
}



/* 响应式设计 */
@media (max-width: 768px) {
    header .container {
        flex-direction: column;
        text-align: center;
    }
    
    nav ul {
        margin-top: 1rem;
    }
    
    nav ul li {
        margin: 0 0.75rem;
    }
    
    .about-content {
        flex-direction: column;
    }
    

}