* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: 'Microsoft YaHei', 'SimSun', Arial, sans-serif;
    line-height: 1.8;
    color: #333;
    background: linear-gradient(135deg, #f0f9f7 0%, #e8f5e9 100%);
}
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}
header {
    background: linear-gradient(to right, #00695c, #00897b);
    color: white;
    padding: 2rem 0;
}
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo {
    font-size: 2.2rem;
    font-weight: bold;
}
.nav-menu {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}
.nav-menu a {
    color: white;
    text-decoration: none;
    font-weight: 500;
}
.nav-menu a:hover {
    color: #b2dfdb;
}
main {
    min-height: calc(100vh - 200px);
    padding: 2rem 0;
}
footer {
    background-color: #00695c;
    color: white;
    text-align: center;
    padding: 2rem 0;
}
footer a {
    color: #b2dfdb;
}
h2 {
    color: #00695c;
    margin-bottom: 2rem;
    font-size: 2.2rem;
}
h4 {
    color: #00695c;
}
.project-card {
    background: white;
    padding: 2rem;
    margin: 1.5rem 0;
    border-radius: 8px;
    border-left: 5px solid #00897b;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}
.project-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #00695c, #00897b);
    border-radius: 50%;
    margin-bottom: 1rem;
}
.news-item {
    background: white;
    padding: 1.5rem;
    margin: 1rem 0;
    border-radius: 8px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}
.news-date {
    color: #00897b;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}
.btn {
    background: #00897b;
    color: white;
    padding: 0.8rem 2rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-weight: bold;
}