:root {
    --primary-green: #2e7d32;
    --secondary-green: #81c784;
    --accent-gray: #37474f;
    --background: #f5f5f6;
}

body {
    font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    margin: 0;
    background-color: var(--background);
}

nav {
    background: var(--primary-green);
    padding: 1rem 2rem;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.logo {
    color: white;
    font-weight: bold;
    font-size: 1.5rem;
}

nav ul {
    display: flex;
    gap: 2rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

nav a {
    color: white;
    text-decoration: none;
    transition: opacity 0.3s;
}

nav a:hover {
    opacity: 0.8;
}

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

.hero {
    text-align: center;
    padding: 4rem 0;
}

.intro-card {
    background: white;
    border-radius: 10px;
    padding: 2rem;
    box-shadow: 0 3px 6px rgba(0,0,0,0.1);
    text-align: left;
}

@media (max-width: 768px) {
    nav ul {
        display: none;
    }
}

/* 师资队伍样式 */
.faculty {
    padding: 2rem;
}

.teacher-card {
    background: white;
    border-radius: 8px;
    padding: 1.5rem;
    margin: 1rem 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.teacher-card h3 {
    color: var(--primary-green);
    margin-top: 0;
}

.teacher-info p {
    margin: 0.5rem 0;
}

.details {
    margin-top: 1rem;
    padding: 1rem;
    background: var(--background);
    border-radius: 6px;
}

.details h4 {
    margin-top: 0;
    color: var(--accent-gray);
}

/* 论文列表样式 */
.papers {
    padding: 2rem;
}

.paper-year {
    margin: 2rem 0;
    border-left: 4px solid var(--primary-green);
    padding-left: 1rem;
}

.paper-year h3 {
    color: var(--accent-gray);
    margin: 0 0 1rem;
}

.paper-item {
    background: white;
    padding: 1rem;
    margin: 1rem 0;
    border-radius: 6px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.paper-item a {
    color: var(--primary-green);
    text-decoration: none;
    font-weight: 500;
}

.paper-item a:hover {
    text-decoration: underline;
}

.paper-item p {
    margin: 0.5rem 0 0;
    color: var(--accent-gray);
    font-size: 0.9em;
}

/* 专利页面样式 */
.patents {
    padding: 2rem;
}

.patent-year {
    margin: 2rem 0;
}

.patent-item {
    background: white;
    padding: 1.5rem;
    margin: 1rem 0;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.patent-title a {
    color: var(--primary-green);
    text-decoration: none;
    font-weight: 500;
}

.patent-info {
    margin-top: 1rem;
    display: flex;
    gap: 2rem;
    color: var(--accent-gray);
    font-size: 0.9em;
}

/* 实验室环境样式 */
.lab-environment {
    padding: 2rem;
}

.lab-grid {
    display: grid;
    gap: 1.5rem;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.lab-card {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.lab-image {
    height: 200px;
    background: #eee;
    margin: 1rem 0;
    border-radius: 4px;
}

.equipment-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin: 2rem 0;
}

.equipment-item {
    background: var(--background);
    padding: 1.5rem;
    border-radius: 8px;
}

.base-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.base-card {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

/* 学术资源样式 */
.resources {
    padding: 2rem;
}

.resource-category {
    margin: 3rem 0;
}

.resource-item {
    background: white;
    padding: 1.5rem;
    margin: 1rem 0;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.resource-item a {
    color: var(--primary-green);
    text-decoration: none;
    font-weight: 500;
}

.resource-item p {
    margin: 0.5rem 0 0;
    color: var(--accent-gray);
}