* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Arial", "Microsoft YaHei", sans-serif;
}

/* 导航栏样式 */
.navbar {
    background-color: #A2161A; /* 原页面深红色 */
    padding: 1.2rem 0;
    text-align: center;
}

.navbar a {
    display: inline-block;
    padding: 0.6rem 2rem;
    margin: 0 0.3rem;
    border-radius: 4px;
    text-decoration: none;
    color: white;
    font-size: 1rem;
    background-color: #8B2323; /* 导航按钮默认深棕色 */
}

.navbar a.active {
    background-color: #F5C147; /* Home按钮黄色高亮 */
    color: #333;
    font-weight: 500;
}

/* 主体容器 */
.container {
    width: 80%;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    background-color: #F0F0F0; /* 页面背景浅灰色 */
    min-height: calc(100vh - 120px);
    padding: 2rem 0;
    overflow: hidden;
}



/* 纸张区域（核心内容区） */
.paper {
    position: relative;
    z-index: 2;
    background-color: white;
    width: 70%;
    margin: 0 auto;
    padding: 3rem;
    box-shadow: 0 0 20px rgba(0,0,0,0.1);
}



/* 个人信息区域 */
.profile {
    display: flex;
    align-items: flex-start;
    gap: 2rem;
    margin-bottom: 1rem;
}

.profile .avatar {
    width: 100px;
    border: 2px solid #E0E0E0;
}

.profile .info h1 {
    font-size: 1.8rem;
    color: #333;
    margin-bottom: 0.5rem;
}

.profile .info .title {
    font-size: 0.95rem;
    color: #666;
    margin-bottom: 1rem;
}

/* 按钮组（Google Scholar等） */
.btn-group {
    margin-bottom: 1rem;
}

.btn-group a {
    display: inline-block;
    padding: 0.4rem 0.8rem;
    margin-right: 0.5rem;
    border: 1px solid #333;
    text-decoration: none;
    color: #333;
    font-size: 0.85rem;
    transition: background-color 0.3s;
}

.btn-group a:hover {
    background-color: #F0F0F0;
}

/* 研究方向文本 */
.research-desc {
    font-size: 0.95rem;
    line-height: 1.7;
    color: #444;
    margin-bottom: 2rem; /* 与News栏目拉开间距 */
}

/* 新增News栏目样式 */
.news-section {
    border-top: 2px solid #A2161A; /* 深红色分隔线，呼应导航栏 */
    padding-top: 2rem;
}

.news-title {
    font-size: 1.5rem;
    color: #A2161A; /* 深红色标题，贴合网站主色调 */
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.news-item {
    line-height: 1.7;
    color: #444;
}

.news-date {
    font-size: 0.85rem;
    color: #666;
    margin-bottom: 0.5rem;
    font-style: italic;
}

.news-paper-title {
    font-size: 1.1rem;
    color: #333;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.news-authors {
    font-size: 0.9rem;
    color: #555;
    margin-bottom: 0.8rem;
}

.news-abstract {
    font-size: 0.9rem;
    margin-bottom: 1rem;
    text-align: justify;
}

.news-link a {
    display: inline-block;
    padding: 0.4rem 0.8rem;
    border: 1px solid #A2161A; /* 深红色边框 */
    color: #A2161A; /* 深红色文字 */
    text-decoration: none;
    font-size: 0.85rem;
    transition: all 0.3s;
    border-radius: 2px;
}

.news-link a:hover {
    background-color: #A2161A;
    color: white;
}

/* 页脚 */
.footer {
    background-color: white;
    text-align: center;
    padding: 1.5rem;
    font-size: 0.8rem;
    color: #666;
    margin-top: 1.5rem;
}

/* 响应式适配 */
@media (max-width: 768px) {
    .container {
        width: 95%;
    }
    .paper {
        width: 90%;
        padding: 2rem;
    }
    .profile {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    .navbar a {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }
    /* 响应式下调整叶子大小 */
    .leaf1 {
        width: 90px;
        height: 60px;
    }
    .leaf2 {
        width: 120px;
        height: 80px;
    }
    .leaf3 {
        width: 80px;
        height: 50px;
    }
    /* 响应式下调整News栏目 */
    .news-title {
        font-size: 1.3rem;
    }
    .news-paper-title {
        font-size: 1rem;
    }
    .news-abstract {
        font-size: 0.85rem;
    }
}